U.S. patent application number 10/731619 was filed with the patent office on 2005-06-09 for simulated hunting apparatus and method for using same.
Invention is credited to Heald, Jason D., Kennen, John Scott.
Application Number | 20050123883 10/731619 |
Document ID | / |
Family ID | 34634394 |
Filed Date | 2005-06-09 |
United States Patent
Application |
20050123883 |
Kind Code |
A1 |
Kennen, John Scott ; et
al. |
June 9, 2005 |
Simulated hunting apparatus and method for using same
Abstract
A simulated hunting application for simulating the firing of a
projectile such as an arrow or bullet, and displaying its flight
path and that of its impact point on an intended target. In a
preferred embodiment, the simulated hunting application includes a
hunting instrument, such as an archery bow or gun, capable of
launching a projectile such as an arrow or bullet; a data capture
unit such as a video camera for capturing video data; a range
finder for determining distance to target; a display screen for
displaying images; trajectory calculating and video editing
software programs; and a recording unit for storing the data
captured by the data capture unit and data entered into the
trajectory calculating software by the user. The flight path of the
projectile, as well as its impact point with respect to the
intended target, and interplay with background images, may be
viewed by the hunter. Safe dry-firing of the hunting instrument may
be provided using a momentum suppression rod which also forms part
of the present invention. Interplay between the trajectory
calculating software and an appropriate clinometer takes into
account uphill or downhill shooting.
Inventors: |
Kennen, John Scott;
(Alzorqina, IL) ; Heald, Jason D.; (Woodbury,
MN) |
Correspondence
Address: |
MICHAEL P. MAZZA, LLC
686 CRESCENT BLVD.
GLEN ELYN
IL
60137
US
|
Family ID: |
34634394 |
Appl. No.: |
10/731619 |
Filed: |
December 9, 2003 |
Current U.S.
Class: |
434/11 |
Current CPC
Class: |
F41G 1/467 20130101;
G09B 19/0038 20130101; F41B 5/1476 20130101; F41G 3/2611 20130101;
F41B 5/1403 20130101 |
Class at
Publication: |
434/011 |
International
Class: |
F41G 003/26; F41A
033/00 |
Claims
We claim:
1. A simulated hunting application, comprising: a hunting
instrument capable of firing a projectile; a data capture unit
comprising a camera for capturing image data and a range finder for
determining distance to target; a display screen for displaying the
image data; trajectory calculating software capable of calculating
the flight path and impact point of the projectile based on
variable data entered by a user; image editing software; and a
recording unit for storing the data captured by the data capture
unit and the variable data; wherein the image editing software is
configured to allow display of at least portions of a flight path
of the projectile based at least in part on the calculations
performed by the trajectory calculating software, so that the
flight path of the projectile may be viewed on the display screen
and an impact point on or near an intended target may also be
viewed.
2. The simulated hunting application of claim 1, wherein the
hunting instrument comprises a bow and the projectile comprises an
arrow.
3. The simulated hunting application of claim 1, wherein the
hunting instrument comprises a gun and the projectile comprises a
bullet or pellets.
4. The simulated hunting application of claim 1, wherein the image
data comprises video data, and the image editing software comprises
video editing software capable of generating frame inlays from
portions of the flight path of the projectile and incorporating the
frame inlays into the video data based on the calculations
performed by the trajectory calculating software program, and
displaying the edited frames on the display screen.
5. The simulated hunting application of claim 1, wherein the image
editing software and the trajectory calculating software enable
display of a site zero impact location on the display screen.
6. The simulated hunting application of claim 1, wherein the impact
point is derived using a predetermined algorithm indicating a
change in pixel size given corresponding target distance
changes.
7. The simulated hunting application of claim 1, wherein the image
editing software and the trajectory calculating software enable
display on the display screen of images adjacent an intended target
and interplay between such images and the projectile.
8. The simulated hunting application of claim 1, wherein the image
editing software and the trajectory calculating software provide
the user with shot result information.
9. The simulated hunting application of claim 1, wherein the shot
result information comprises whether or not the shot was a "kill"
shot.
10. The simulated hunting application of claim 1, wherein the image
editing software and the trajectory calculating software provide
the user with information concerning target speed at the time of
the shot.
11. The simulated hunting application of claim 1, wherein the data
capture unit further comprises a microphone for capturing audio
data corresponding to the captured image and range-finding
data.
12. The simulated hunting application of claim 1, wherein the range
finder comprises a laser range finder.
13. The simulated hunting application of claim 1, further
comprising a clinometer increasing shot accuracy by accounting for
slope or tilt angle of the hunting instrument relative to the
intended target.
14. The simulated hunting application of claim 1, wherein the image
data may be transmitted from the data capture unit to an electrical
apparatus such as a computer or PDA.
15. The simulated hunting application of claim 14, wherein the
flight path of the projectile and the impact point of the intended
target may be viewed on the display screen without first having to
download the image data to the computer.
16. The simulated hunting application of claim 15, wherein the
display screen is enabled to provide multi-shot displays
corresponding to a plurality of projectiles.
17. The simulated hunting application of claim 1, wherein the
display screen comprises a liquid crystal display.
18. The simulated hunting application of claim 1, wherein a
pre-shot adjustment is made by firing an initial, simulated shot,
estimating one or more shot parameters based on analysis of the
initial, simulated shot and its corresponding flight path, and
adjusting one or more of the shot parameters prior to firing of the
next simulated shot at the same intended target.
19. A simulated hunting apparatus, comprising: an archery bow
having a bow string suitable for launching an arrow; a momentum
suppression rod, a cavity and a piston moveable within the cavity,
the piston being capable of providing back-pressure to the bow
string upon release of the drawn string commensurate to that which
an arrow imparts when actually fired from the bow.
20. The simulated hunting apparatus of claim 19, wherein the
momentum suppression rod has first and second ends, the first end
being connected to the archery bow and the second end being
connected to the bow string.
21. The simulated hunting apparatus of claim 19, wherein the
momentum suppression rod is mechanically-actuated and comprises a
friction rod.
22. The simulated hunting apparatus of claim 19, wherein the
momentum suppression rod is hydraulically and/or pneumatically
actuated.
23. The simulated hunting apparatus of claim 19, wherein the cavity
comprises a cavity wall and inner and outer chambers separated by a
displacement valve, the inner chamber housing the piston, and the
outer chamber including first and second compartments, the first
compartment containing a compressed gas and the second compartment
containing a liquid.
24. The simulated hunting apparatus of claim 23, wherein the
displacement valve is adjustable from the outside of the momentum
suppression rod to allow varying rates of rod release and
back-pressure.
25. The simulated hunting apparatus of claim 19, further
comprising: a data capture unit comprising a video camera for
capturing video data and a range-finder for determining distance to
target; a display screen for displaying video images; a trajectory
calculating software program capable of calculating the flight path
and impact point of an arrow based on a series of variables entered
into the program; a video editing software program; and a recording
unit for storing data captured by the data capture unit and data
entered into the trajectory calculating software by the user;
wherein the video editing software program is capable of displaying
portions of a flight path of the projectile based on the
calculations performed by the trajectory calculating software
program, so that the flight path of the projectile may be viewed on
the display screen and an impact point on or near an intended
target may also be viewed.
26. The simulated hunting apparatus of claim 23, wherein the
compressed gas is nitrogen gas.
27. The simulated hunting apparatus of claim 23, wherein the liquid
comprises a low viscosity oil.
28. The simulated hunting apparatus of claim 23, wherein the
piston, the inner and the outer chambers, and the cavity wall are
machined to substantially minimize rod flex and distortion.
29. The simulated hunting apparatus of claim 19, wherein the piston
is a multistage piston capable of extending in multiple
portions.
30. The simulated hunting apparatus of claim 29, further comprising
inner extension limiters which engage outer extension limiters at
each stage of extension of the piston, thereby allowing each
progressive piston portion of the multistage piston to extend when
the previous portion has substantially reached its maximum
extension point.
31. The simulated hunting apparatus of claim 19, wherein the
momentum suppression rod includes a charge coupled device
camera.
32. The simulated hunting apparatus of claim 19, further comprising
one or more proximity sensors located in the cavity.
33. The simulated hunting apparatus of claim 32, wherein the
proximity sensors have a reaction time in the range of about
0.2-0.9 milliseconds.
34. The simulated hunting apparatus of claim 20, wherein the second
end of the momentum suppression rod extends toward the bow string
in a direction generally normal to the bow string and generally
along a centerline of travel of the bow string.
35. The simulated hunting apparatus of claim 23, wherein release of
the drawn bow string causes the piston to reenter the inner chamber
and forces the liquid back through the displacement valve and into
the outer chamber.
36. The simulated hunting apparatus of claim 23, wherein release of
the drawn bow string causes the piston to reenter the inner chamber
and recompresses the gas, thereby supplying sufficient
back-pressure on the bow string to sufficiently reduce shock and
vibration on the bow necessary to avoid damage to the bow or injury
to the user.
37. The simulated hunting apparatus of claim 19, further comprising
an altimeter.
38. A method for a hunter to use a simulated hunting application,
comprising the steps of: aiming a hunting instrument capable of
firing a projectile at an intended target, the hunting instrument
comprising a data capture unit for capturing image data and a range
finder for determining distance to target, and a display screen for
displaying the image data; calculating a flight path and an impact
point for the projectile based at least in part on variable data
entered by the hunter, using trajectory calculating software
associated with the hunting instrument; storing the data captured
by the data capture unit and the variable data using a recording
unit; editing the image data using image editing software to
display at least portions of a flight path of the projectile based
at least in part on the calculations performed by the trajectory
calculating software, so that the flight path of the projectile may
be viewed on the display screen and an impact point on or near the
intended target may also be viewed.
39. The method of claim 38, further comprising the step of the
hunter making a pre-shot adjustment by firing an initial, simulated
shot, estimating one or more shot parameters based on analysis of
the initial, simulated shot and its corresponding flight path, and
adjusting one or more of the shot parameters prior to firing of the
next simulated shot at the same intended target.
Description
BACKGROUND OF THE INVENTION
[0001] This invention relates to the field of simulated hunting.
More specifically, the invention is directed to a simulated hunting
device which may be used, for example, to dry-fire a gun or bow
equipped with a digital recording device, rangefinding equipment,
trajectory calculating software, and image editing software capable
of displaying the flight of a bullet or arrow and its impact point
on a display screen, allowing hunting without the actual firing of
a gun or bow and without harming the target animal.
[0002] Various factors have fueled an increasing need for simulated
hunting. These factors include increasing population; industrial
growth and corresponding shrinkage of huntable land; the presence
of large tracts of government-owned, no-hunting lands such as the
National Parks; the desire for competitive hunting venues including
hunting leagues and/or competitions; and activist groups lobbying
against the killing of animals. Accordingly, hunters have
experienced an escalating need for simulated hunting experiences
and devices, methods and techniques for providing them.
[0003] The prior art in the field of displaying projectile impact
points discloses methods of calculating and tracking the trajectory
of a projectile exiting a firearm from the time it leaves the
muzzle to the time at which it would theoretically impact a target.
The prior art considers factors such as gravity; distance to the
target; the projectile's weight and average speed; and other
environmental factors. Many of the methods taught by the prior art
incorporate using a range-finding mechanism, such as laser range
finders, to determine the distance from the firearm to the target.
Trajectory calculating units attached to a firearm are also known,
and may be programmed to calculate the effects of the previously
mentioned factors on a projectile, such as a bullet. The actual
point of impact of a projectile may then be determined relative to
a zero-point reticle calibration. Based on the calculations
performed by the trajectory software, a point of impact indicator
may then be superimposed on a display unit.
[0004] It is also known to provide an integrated display apparatus
such as a digital camera attached to a telescopic scope/sight which
allows the hunter/user to record the activity seen through the
scope before, during, or after firing his weapon. The digital
camera may record the activity in its field view from the time it
is activated by one of a variety of means, including acoustic
detectors, heat change detectors, motion detectors, pressure
detectors, electronic detectors, retinal detectors, or manual
activation.
[0005] Previous methods of simulated projectile targeting do not
include coupling the trajectory software with image editing
software to provide a device capable of superimposing the entire
flight of a projectile, not just point of impact, on the video
recorded by a digital camera. No known method of integrating these
two disparate software applications has been disclosed in
combination with hunting apparatus.
[0006] In addition, shooting at up and down hill angles, such as
from a tree stand, is common in hunting. However, currently known
technology does not take into account the effect degrees of slope
have on projectile flight.
[0007] The prior art in the field of archery discloses various
methods of dampening vibration in the riser caused by the action of
shooting the bow. Known dampening methods help stabilize the bow
and arrow during firing and aid with bow preservation and arrow
accuracy. However, while it is well known in the archery field that
dry-firing (e.g., drawing and releasing the bow without firing an
actual arrow) can result in damage to the bow and potential injury
to the archer, methods enabling safe dry-firing are unknown.
[0008] Accordingly, it is an object of the present invention to
provide an apparatus for capturing video and/or audio data of a
hunting experience through a data capturing unit which may be
equipped with a digital camera that can be manipulated with
trajectory calculating software and image editing software to
superimpose the flight of a projectile and its impact on a target
without the actual firing of the projectile.
[0009] It is another object to provide an apparatus capable of
aiding a hunter in measuring distance, providing aiming
information, and recording flight and impact video data of an
actual arrow fired at a target or animal.
[0010] It is another object to provide such effects using hunting
instruments firing either projectiles or arrows (e.g., guns or
bows).
[0011] It is still another object to provide a device and method
for safely dry-firing a bow.
[0012] It is yet another object to provide hunting apparatus able
to account for shooting from a slope, to provide accurate uphill
and downhill shot trajectory.
[0013] It is another object to provide a simulated hunting unit
suitable for use in year-round hunting, on no-hunting lands such as
National Parks, and in competitive hunting leagues and/or
competitions.
[0014] Definition of Claim Terms
[0015] The following terms are used in the claims of the patent as
filed and are intended to have their broadest meaning consistent
with the requirements of law. Where alternative meanings are
possible, the broadest meaning is intended. All words used in the
claims are intended to be used in the normal, customary usage of
grammar and the English language.
[0016] "Archery" means a hunting instrument capable of launching an
arrow such as a compound, recurve, longbow, crossbow, etc.
[0017] "Clinometer" means an electronic sensing device capable of
measuring the degree of tilt and/or angle of a hunting apparatus
relative to the intended target.
[0018] "Dry-firing" means drawing and releasing the bow string
without firing an actual arrow.
[0019] "Gun" means a hunting instrument capable of firing a bullet
such as a rifle, pistol, shotgun, etc.
[0020] "Hunting apparatus" means guns or other weapons for shooting
projectiles, including archery apparatus such as bows and arrows,
etc.
[0021] "Momentum suppression rod" means a device facilitating
dry-firing of a bow while substantially eliminating the usual
safety hazards to the bow or person firing the bow typically
encountered when dry-firing occurs.
[0022] "Pre-shot adjustment" means use of the hunting apparatus of
the present invention to estimate shot parameters by "firing" a
pre-shot allowing the hunter to view the flight path of the
projectile and adjust the shot parameters prior to making a final
shot at an intended target.
[0023] "Projectile" means any element capable of being fired by a
gun or bow, such as but not limited to bullets, pellets or
arrows.
[0024] "Site zero impact location" for actual shots means the
location of the intended target, i.e., where the crosshairs or
sight pins of the hunting instrument (e.g., gun or bow) are aimed
and the respective projectile or arrow impacts that spot.
SUMMARY OF THE INVENTION
[0025] The objects mentioned above, as well as other objects, are
solved by the present invention, which overcomes disadvantages of
prior art simulated hunting units and techniques, while providing
new advantages not previously obtainable.
[0026] In a preferred embodiment of the present invention, a
simulated hunting application is provided that utilizes a hunting
instrument, such as a gun capable of launching a bullet or a bow
capable of launching an arrow. A data capture unit, which may
include a video camera, is used to capture imaging data such as
video and/or infrared and/or other display data. The data capture
unit may also include or be in electrical communication with a
range finder, such as a laser range finder, for determining the
distance to a target. A display screen is preferably provided for
displaying the imaging data, such as an LCD for displaying video
data. Trajectory calculating software is employed to calculate the
flight path and impact point of the projectile based on a series of
variables entered into the program by the user (e.g., wind speed;
gun make and model; gun bore length and diameter; arrow shaft
length, type, weight, diameter and speed; fletching length, type
and quantity; distance to target; parallax; speed of the target,
etc.). Image editing software, such as video editing software, is
also provided, as is a suitable recording unit for storing the data
captured by the data capture unit and data entered into the
trajectory calculating software by the user. The image editing
software program is capable of displaying portions of a flight path
of the projectile, such as generating frame inlays, based on the
calculations performed by the trajectory calculating software
program, so that the flight path of the projectile may be viewed on
the display screen and an impact point on an intended target may
also be viewed, such as by interleaving the frame inlays into the
video data and displaying the edited frames on the display screen.
The display screen may be used to display multi-shot displays
corresponding to a plurality of projectiles.
[0027] In this manner, the hunting apparatus allows for simulating
and superimposing the flight of a projectile and the impact point
of that projectile on a target by mock-firing a gun or bow without
damaging the target or harming the animal. The software
incorporates the variables entered by the hunter into the
trajectory calculation, along with the captured video data, to
simulate the true path had an actual projectile been fired. The
data capturing unit may be used to display and record video data in
digital format, record audio, and use laser range finding
technology to measure and record distance to targets. The
trajectory calculating software may be used to process the video
data captured by the data capturing unit and interface with a video
editing software program to display a visual simulation of the path
of the projectile.
[0028] The video display unit may include a liquid crystal display
(LCD) screen that displays the distance, targeting information, the
real time image the digital camera is recording, battery
information, recording information, etc. If desired, the flight
path of the projectile and/or its impact point may also be
displayed here, if desired. The video display unit may include a
zoom lens function that enhances images of long-range targets. This
unit can enhance or replace the bow sight pins commonly used in
aiming today.
[0029] The image editing and trajectory calculating software
programs may also be configured to display: (1) a site zero impact
location; (2) images adjacent an intended target and interplay
between such images and the projectile (e.g., showing the arrow
brushing a branch on its way toward an intended target, being
buffeted by wind during flight, sticking in a tree stump next to
the intended target that it missed, etc.); (3) information
concerning results of the shot, such as whether the shot was a
"kill" or "grazing" shot; (4) information concerning the speed of
the target at the time of the shot; and (5) information concerning
the angle of slope/degree of incline in relation from the hunting
unit to the target.
[0030] The hunting apparatus may electronically communicate with
other electrical apparatus, such as PDAs (e.g., a Blackberry, a
Palm Pilot, etc.), computers, etc. This allows storage of the hunt,
as well as downloading of information from the Internet, for
example, to augment the hunting application. If desired, the flight
path of the projectile and the impact point of the intended target
may be viewed on the display screen without first having to
download the video data to the electrical apparatus such as a
computer.
[0031] In the preferred embodiment of the invention, a clinometer
may be incorporated to provide angle information of the hunting
apparatus. The angle information obtained from the climometer may
be used in conjunction with the trajectory software to provide
accurate uphill and downhill shot trajectory. An altimeter may also
be used to render shooting, particularly bow shooting, more precise
in altitude.
[0032] In an alternative embodiment of the invention, a simulated
hunting apparatus is provided which includes an archery bow having
a bow string suitable for launching an arrow, and a momentum
suppression rod which allows safe, dry-firing of the bow. The
momentum suppression rod attaches to the bow and the string and
controls the speed of the string and the limb system's forward
motion. The momentum suppression rod may be pressure adjusted to
accommodate a wide variety of bow makes, models, lengths,
draw-pounds, etc., and may be adapted for different bow types
(e.g., compound, crossbow, longbow, recurve, etc.). It may
accomplish this speed control by providing back-pressure equivalent
to that which an actual arrow would produce in a true firing of the
bow. The momentum suppression rod may constitute a
mechanically-actuated rod; preferably, however, it is
pneumatically-actuated and/or hydraulically-actuated. This hunting
apparatus, if desired, may also include and be configured with any
and/or all of the devices described above (e.g., data capture unit,
display screen, etc.) to provide any and/or all of the simulated
hunting functions described above, if desired.
[0033] In one, pneumatically-actuated and/or hydraulically-actuated
embodiment, the momentum suppression rod includes a cavity and a
piston moveable within the cavity. The piston is capable of
providing back-pressure to the bow string upon release of the drawn
string commensurate to that which an arrow imparts when actually
fired from the bow. In this embodiment, the momentum suppression
rod has first and second ends, with the first end connected to the
archery bow and the second end connected to the bow string. The
second end of the momentum suppression rod may extend toward the
bow string in a direction generally normal to the bow string and
generally along a centerline of travel of the bow string. The
cavity may include a cavity wall and inner and outer chambers
separated by a displacement valve. The inner chamber may house the
piston, and the outer chamber may include first and second
compartments, the first compartment containing a compressed gas,
such as nitrogen, and the second compartment containing a liquid,
such as a low viscosity oil. The displacement valve may be
configured to be adjustable from the outside of the momentum
suppression rod to allow varying rates of rod release and
back-pressure. The piston, the inner and the outer chambers, and
the cavity wall are preferably machined to extremely tight
tolerances, such as about 0.010+/-0.005 inches, to minimize or
prevent rod flex or distortion. One or more proximity sensors are
located in the piston cavity; preferably, these sensors have a
reaction time in the range of about 0.2-0.9 milliseconds. Release
of the drawn bow string causes the piston to reenter the inner
chamber and forces the liquid back through the displacement valve
and into the outer chamber. Similarly, release of the drawn bow
string also causes the piston to reenter the inner chamber and
recompresses the gas, thereby supplying sufficient back-pressure on
the bow string to sufficiently reduce shock and vibration on the
bow necessary to avoid damage to the bow or injury to the user.
[0034] In a preferred embodiment, the momentum suppression rod
includes a multistage piston capable of extending in multiple
portions. Inner extension limiters may be used to engage outer
extension limiters at each stage of piston extension, allowing each
progressive piston portion of the multistage piston to extend when
the previous portion has substantially reached its maximum
extension point. The momentum suppression rod may include a charge
coupled device camera with a power source and a zoom lens for
facilitating the capture of video data; this camera may, if
desired, be located in an end cap positioned at one end of the
momentum suppression rod.
[0035] In yet another alternative embodiment of the present
invention, a method is provided allowing a hunter to use a
simulated hunting application. The hunter aims a hunting instrument
capable of firing a projectile at an intended target. The hunting
instrument includes a data capture unit for capturing image data
and a range finder for determining distance to target, and a
display screen for displaying the image data. A flight path and an
impact point for the projectile are calculated based at least in
part on variable data entered by the hunter, using trajectory
calculating software associated with the hunting instrument. The
data captured by the data capture unit and the variable data are
captured using a recording unit. The image data may be edited using
image editing software to display at least portions of a flight
path of the projectile based at least in part on the calculations
performed by the trajectory calculating software, so that the
flight path of the projectile may be viewed on the display screen
and an impact point on or near the intended target may also be
viewed. The hunter may also make a pre-shot adjustment by firing an
initial, simulated shot, estimating one or more shot parameters
based on analysis of the initial, simulated shot and its
corresponding flight path, and adjusting one or more of the shot
parameters prior to firing of the next simulated shot at the same
intended target.
[0036] The hunting unit of the present invention may be used with
both actual and simulated hunting applications. Alternatively, the
hunting unit may be used to test various conditions and/or devices.
For example, the unit may be used to measure distance, provide
aiming information, and record flight and impact video data of an
actual arrow fired at a target or animal; the rangefinder can help
fine-tune distance to target to facilitate shot placement, etc.
Preferably, nothing need change in terms of the aspects of
scouting, spotting game or other targets, or placing tree stands.
Preferably, the fundamentals of firing the hunting instrument
remain consistent for both real and simulated hunting.
BRIEF DESCRIPTION OF THE DRAWINGS
[0037] The novel features which are characteristic of the invention
are set forth in the appended claims. The invention itself,
however, together with further objects and attendant advantages
thereof, will be best understood by reference to the following
description taken in connection with the accompanying drawings, in
which:
[0038] FIG. 1 is a perspective view of an archery bow equipped with
a mechanically actuated momentum suppression rod for dry-firing the
bow, according to one embodiment of the invention;
[0039] FIG. 2 is a rear view of the bow shown in FIG. 1;
[0040] FIG. 3 is an enlarged, partial side and rear perspective
view of the bow shown in FIG. 1;
[0041] FIG. 4 is an enlarged, perspective view of a preferred
embodiment of the data capture unit that is mounted on the bow;
[0042] FIG. 5 is a schematic view illustrating information that may
be displayed on the LCD of the data capture unit and may be
communicated to an associated computer;
[0043] FIG. 6a is a schematic view illustrating, in one preferred
embodiment of software according to the present invention, an
example of a computer screen shot a user might encounter at a "Main
Page" which may correspond to the logical flow shown in FIG.
10;
[0044] FIG. 6b is a schematic view similar to FIG. 6a of a "Speed
Page" which may correspond to the logical flow shown in FIG.
11;
[0045] FIG. 6c is a schematic view of a "Trajectory Page" which may
correspond to the logical flow shown in FIG. 12;
[0046] FIG. 6d is a schematic view of a "Build Arrow" page which
may correspond to the logical flow shown in FIG. 19;
[0047] FIG. 6e is a schematic view of a "Shaft Selector" page which
may correspond to the logical flow shown in FIG. 16;
[0048] FIG. 6f is a schematic view of a "Shot Images" page which
may correspond to the logical flow shown in FIG. 22;
[0049] FIG. 6g is a schematic view of a "Arrow Images" page which
may correspond to the logical flow shown in FIG. 23;
[0050] FIG. 6h is a schematic view of a "Simulator" page which may
correspond to the logical flow shown in FIGS. 13-15;
[0051] FIG. 7 is a side schematic view of a preferred embodiment of
a momentum suppression rod;
[0052] FIG. 8 is a schematic view of a preferred embodiment of a
data capture unit;
[0053] FIG. 9 is a flow diagram illustrating the overall
configuration of a preferred embodiment of the software application
according to the present invention;
[0054] FIG. 10 is a flow diagram illustrating the configuration of
the "Main Page" of the software application;
[0055] FIG. 11 is a flow diagram illustrating the configuration of
the arrow "Speed Page" of the software application;
[0056] FIG. 12 is a flow diagram illustrating the configuration of
the arrow "Trajectory Page" of the software application;
[0057] FIGS. 13-15 are flow diagrams illustrating the configuration
of the "Simulator" shown in FIG. 10;
[0058] FIG. 16 is a flow diagram illustrating the configuration of
the "Shaft Selector" page shown in FIG. 10;
[0059] FIG. 17 is a flow diagram illustrating the configuration of
the "Menu Page" shown in FIG. 9;
[0060] FIG. 18 is a flow diagram illustrating the configuration of
the "Edit Bow" page of FIG. 10;
[0061] FIG. 19 is a flow diagram illustrating the configuration of
the "Edit Arrow" page of FIG. 10;
[0062] FIG. 20 is a flow diagram illustrating the configuration of
the "Configuration Manager" referenced in FIG. 10;
[0063] FIG. 21 is a flow diagram illustrating the configuration of
the "Help Menu" referenced in FIG. 17;
[0064] FIG. 22 is a flow diagram illustrating the configuration of
the "Shot Image Selector" referenced in FIG. 17;
[0065] FIG. 23 is a flow diagram illustrating the configuration of
the "Arrow Image Selector" referenced in FIG. 17; and
[0066] FIG. 24 is a flow diagram illustrating the configuration of
the "Software Updates" utility referenced in FIG. 21.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0067] Set forth below is a description of what are believed to be
the preferred embodiments and/or best examples of the invention
claimed. Future and present alternatives and modifications to this
preferred embodiment are contemplated. Any alternatives or
modifications which make insubstantial changes in function, in
purpose, in structure, or in result are intended to be covered by
the claims of this patent.
[0068] In accordance with a preferred embodiment of this invention,
a unit for use in simulated hunting is generally designated with
the reference numeral 10, as shown in FIGS. 1-3. A data capturing
hardware unit 4, also shown in FIG. 4, attach to bow 1, preferably
by sharing existing mounting holes and/or brackets. Thus, hardware
4 preferably mounts to bow riser 3 using existing mounting holes
provided by the bow manufacturer and preferably does not require
modifications to the bow. Data capturing hardware 4 is mounted, as
shown in FIGS. 1-3, on the side of the arrow rest opposite from the
location where the wrist rests, and is preferably attached to the
existing mounting holes for the bow sights and/or arrow quiver.
Hardware mounting bracket 6 is preferably grooved so that data
capture unit 4 may be adjusted up/down and left/right for proper
visual alignment for the user, as well as to provide flexibility of
placement in conjunction with other accessories. Preferably, the
addition of hardware unit 4 to the bow does not require permanent
removal of bow components; nor, preferably, does it prevent the use
of any bow accessory.
[0069] Still referring to FIGS. 1-3, a mechanical version of the
momentum suppression rod (MSR) 2 may be affixed at one end to bow
riser 3 and also clipped to bow string nock 9 as shown. To provide
back pressure to the bow string, bow string nock 9 floats with the
string. In a preferred embodiment, MSR 2 contains some of the data
capture capabilities of unit 4. The preferred MSR 2, shown in
detail in FIG. 7, is designed to allow a user to safely dry-fire a
bow without an arrow. MSR 2 provides the back-pressure normally
supplied by an arrow during normal bow firing. MSR 2 can provide
some of the data to be transmitted to the hunting unit by housing a
wireless charge coupled device (CCD) camera 202 and power source
204 for capturing video data of the hunt, as shown in FIG. 7. CCD
202 transmits the video data wirelessly to data storage unit 114,
as described below. MSR 2 also contains proximity sensors 216 that
allow hunting unit 10 to capture data which may be useful for
timing various events during the hunt.
[0070] Referring to FIGS. 1-3, MSR 2 may constitute mechanical
version consisting of a friction rod that preferably includes a
runner made of a durable Teflon material that may be closely
matched to the rod to produce sufficient drag. Bow string nock or
runner 9 may be attached to the string of the bow and drawn to
shoot and release in the identical manner as firing the bow with a
real arrow. This embodiment is also capable of providing the
required back-pressure to prevent damage to the bow or injury to
the hunter. However, the mechanical MSR version is not as durable
as the hydraulic MSR referenced above and further described
below.
[0071] Referring now to FIG. 7, a hydraulically-actuated MSR 2
constituting the preferred version of the MSR is shown. MSR 2 is
preferably mounted on the bow riser/arrow rest area 3 of the bow in
the centerline of the bow string travel. Mounting MSR 2 containing
CCD 202 in the centerline of the bow string travel eliminates the
need to calibrate and enter vertical and horizontal offsets in the
trajectory and video data software to compensate for the CCD being
off-center, because the CCD films from the arrow or projectile's
precise launch point. The other end of MSR 2 may clip to bow string
5 via string nock 219. When the user draws bow string 5,
inner-multi-stage rod 214 moves first and pulls low viscosity oil
207 (currently envisioned to have a viscosity range of about 40-60
Vi or viscosity index), from reserve tube 210, through displacement
valve 206, and into pressure tube 209. Using low viscosity oil 207
permits the user to operate hunting unit 10 over a broad range of
temperatures. As inner rod 214 reaches maximum extension, inner rod
extension limiters 215 engage the rear of outer rod extension
limiters 215, causing outer multi-stage rod 213 to extend through
the cavity of pressure tube 209. Preferably, limiters 215 provide
magnetic actuation. As the multi-stage rods are being drawn,
compressed nitrogen gas 208, currently envisioned to have a
preferred compressible range of about 20-30 psi, in reserve tube
210 expands to fill the void created in reserve tube 210 by the
removal of the low viscosity oil. The condensed nitrogen gas also
assists the user in drawing bow string 5. When outer rod 213
reaches maximum extension, extension limiters 215 engage proximity
sensors 216. Proximity sensors 216 transmit signals to data
capturing unit 4, feeding the draw/release data to the trajectory
calculating and video editing software for use as described
below.
[0072] When the user releases bow string 5, inner multi-stage rod
214 moves first. Multi-stage rod piston 212 forces the low
viscosity oil out of pressure tube 209, through adjustable
displacement valve 206 and into reserve tube 210. The compressed
nitrogen gas 208 that was permitted to expand in reserve tube 210
during the draw is compressed back to its original pounds per
square inch (PSI) level. Spring loaded bump stop 211 may be
incorporated in pressure tube 209 and may be engaged by multi-stage
rod 212 if the desired maximum compression rate is exceeded.
[0073] MSR 2 preferably is compact in shape due to its multi-stage
design. Alternatively, though less compact, MSR 2 could be provided
with single-stage rods, which would require three times the overall
length of the multi-stage rod for proper operation. Piston 212,
inner and outer rods 213, 214, and cylinder wall supports 217 are
preferably machined to extremely tight tolerances to minimize rod
flex or distortion. Supports 217 limit extension of multi-stage rod
piston 212. Displacement valve 206 is preferably adjustable from
the outside of the MSR using displacement valve adjuster 205 to
allow the user to fine-tune the MSR release and back-pressure rate.
This feature permits the user to adjust the MSR across various bow
draw lengths, weights, release speeds and types. In this preferred
embodiment, MSR 2 houses CCD 202 and proximity sensors 216, which
preferably employ wireless technology and reduce the mounting
requirements (e.g., weight and convenience) of data capturing unit
4 on the bow. Preferably, CCD 202 in MSR end cap 201 has a zoom
lens 203.
[0074] Alternative configurations of simulated hunting unit 10
shown in FIGS. 1-3 are possible. For example, in one alternative
embodiment, the CCD and proximity sensors may not be housed in MSR
2 but, instead may be mounted separately on the bow 1 within the
data capture unit 4, for example. This configuration requires data
capture unit 4 to be aligned and calibrated for vertical and
horizontal offset in relation to the arrow set. The offset may be
determined by measuring the vertical and horizontal offset of the
crosshairs centerline in relation to the centerline of the arrow.
These calculations allow for proper placement of the impact spot on
the video frames (shown in FIG. 5, for example) during the
pixel-division trajectory calculations process, referenced below.
In this alternative embodiment, the offset dimensions may be
entered into a software program in the Bow/Unit Information fields
of FIG. 6a in the trajectory calculating software program, as
further described below.
[0075] To facilitate use of the invention, the user may determine
the "site zero impact location" for actual shots, which is defined
by an arrow impacting the target in the exact spot that the
crosshairs or sight pins in hunting unit 10 were aimed. The
trajectory calculating software can then accurately estimate the
lift and drop associated with the arrow's flight path at given
distances for editing the impact spot during simulation mode. To do
so, the user may first enter certain variables into the trajectory
calculating software program, such was arrow shaft length, type,
weight, diameter and speed; fletching length, type and quantity;
distance to target; and parallax.
[0076] FIG. 4 shows data capture unit 4 of the invention, which in
one embodiment may include a laser range finder as well as the
video recording device. In the preferred embodiment, a laser range
finder and recording device may be attached to the bow as shown in
FIGS. 1-3. Referring now to FIG. 8, an alternative embodiment of
data capture unit 4 is shown. In this embodiment, MSR 2 does not
house the CCD camera and proximity sensors. Instead, these
components attach to the bow as part of data capture unit 4,
separate from MSR 2. Here, the laser range finder components may
include a laser light transmitter 101, which sends a pulse of laser
light to the target (not shown), and a receiver 102 that receives
the returned laser light. Receiver 102 sends the signals from the
returned laser light to processing board 103, which uses the
signals to calculate the distance to target based on the laser
light's time of flight. The user may activate the laser range
finder unit by depressing remote switch 104, which may send a
signal to hunting unit 10 via wire 105.
[0077] The preferred laser range finder is a Bushnell Laser
Rangefinder--Model Yardage Pro Sport. This device is preferred
because of its accuracy to +/-1 yard; its ability to signal on deer
from 5 to 200 yards (the typical bow shot is 10 to 40 yards); its
extremely light weight and compact design, which is an important
feature when attaching it to the bow; its Integrated Perma Focus
monocular optical system 109, providing 4.times. magnification; and
its Integrated LCD display 106 for ranging information, which is
easy to capture and display through a camera. Commercially
available battery 107 may be used power the range finder.
[0078] Still referring to FIG. 8, the operation of the preferred
embodiment of data capture unit 4 will now be explained. CCD 202
captures light 108 as it enters Perma Focus monocular optical
system 109 and LCD 106. Processing board 112 converts light 108
into electrical signals captured by monocular optical system 109.
Recording device 111 converts the electrical signals from
processing board 112 into an image and displays the image on LCD
113 in camera 111. Camera 111 has storage device 114 which stores
images for editing and play back. Using external switch 115, the
user can turn the camera 111 on and off. External switch 116
controls the recording mode of camera 111. LCD 113 may be used to
display, for example, aiming crosshairs and/or sight pins, distance
to target obtained by the laser range finder, a target acquisition
indicator, unit battery condition, and the recording field of view.
Storage device 114, such as a scan disc card, may be used to store
the distance and aiming data displayed on LCD 113 along with the
video images captured by camera 111. This information may be
automatically updated and used by the trajectory calculating
software and video editing software programs to simulate the flight
path and calculate a point of impact for the arrow. The integrated
software uses the data captured by camera 111 and the laser range
finder to add frame inlays of an arrow in flight and at impact to
the video data. The available recording modes provide both video
and audio or still photography of the hunt.
[0079] It may now be appreciated that with use of the present
invention, arrow flight and/or impact may be superimposed onto
visible backdrop or background images. For example, if the
projectile or arrow misses its intended target animal, it may be
seen to impact an adjacent tree trunk. Further, during its flight
path, the arrow may be seen to brush tree leaves, as another
example.
[0080] The preferred model for camera 111 is the Panasonic e-wear
camera--Model SV-AV1OU. This model is preferred because of its
compact nature and light weight, since overall size and weight is a
concern when attaching the device to the bow. The SV-AV1OU Scan
Disk multi-media cards are lightweight (1.5 g, 32 mm.times.24 mm,
and 2.1 mm thick), have a high transfer rate for fast
copy/download, and have a high storage capacity (current cards can
store 5 hours of video). The Scan Disk cards also have a
non-volatile solid-state with no moving parts, which maximizes
battery power. In addition, no data is lost when the power is
turned off. The Scan Disk cards consume little battery power, which
maximizes battery life. They have an operating shock rating of
2,000 Gs, equivalent to a 10-foot drop to a solid surface, making
them ideal for use in a hunting tree stand. Finally, the Scan Disk
cards have high vibration resistance and are unfazed by drastic
weather conditions ranging from -13.degree. F. to 185.degree. F.
Additional features of the Model SV-AV1OU include an integrated
microphone, a high resolution 2" LCD (200,000 pixels), a wide angle
pinhole CCD, and a rechargeable lithium-ion battery system.
[0081] In more preferred embodiments, the LCD screen changes from a
flip-out version to a model that can slide right or left from the
rear of the bow to allow for more flexible positioning. This
embodiment also consolidates the separate LCD screens for the laser
range finder and CCD, so that only one LCD screen is necessary.
Preferably, the laser range finder sends the distance to target
data to be displayed on the single LCD screen rather than using a
separate LCD monitor for the laser range finder. This embodiment
eliminates the requirement on the CCD camera of having to shoot
through the range finder optic to collect distance to target data.
It also permits the ideal placement of the CCD camera in momentum
suppression rod/MSR 2.
[0082] As referenced above, proximity sensors 216 may be used to
control the start/stop recording function to determine the release
time of the arrow. These sensors may be integrated into MSR 2. In
the preferred embodiment, the proximity sensors transmit
information to the trajectory and video editing software
wirelessly. However, in an alternative embodiment, the proximity
sensors 216 may be connected to processing board 112 via wire 120
to provide time of release information to the trajectory
calculating and video editing software in processing board 112, as
shown in FIG. 8. In yet another embodiment, the user can activate
the start/stop recording function on camera 111 with manual switch
119. Wire 121 connects manual switch 119 to processing board 112.
Rechargeable battery 122 powers the recording unit. In a more
preferred embodiment, rechargeable batteries 107 and 122 are
replaced by a single rechargeable battery unit capable of powering
both the laser range finding and the recorder.
[0083] The preferred proximity sensors 216 for the invention are
Cherry Corp. Proximity Sensors, sensor model MP201701 and actuator
model AS201701. These Cherry proximity sensors are preferred
because they operate over a weather range from -40.degree. F. to
221.degree. F. Their reaction/operating time of 0.6 msec may be
important because the timing of the arrow's flight from draw and
release to the start/stop time of the video affects the trajectory
calculation and video editing process. 0.2-0.9 milliseconds (msec)
is a particularly preferred range for the reaction time of the
proximity sensors. These Cherry proximity sensors also have a high
resistance to dirt, moisture, etc. which makes them ideal for
typical hunting environments. Finally, the Cherry Corp proximity
sensors are miniature and lightweight which makes them well-suited
for mounting on the bow.
[0084] When using hunting unit 10 of this invention, multiple
methods of training are possible. Simulation shooting allows the
user to learn the simulation characteristics of the unit and how
variables such as arrow weight and fletching type impact the shot.
The user can also perform real world shooting with the unit.
Hunting unit 10 enhances an actual shooting experience by recording
actual arrow flights and impacts for later analysis. The unit also
allows for slow-motion control during video playback of a hunt
scene to view arrow flight characteristics (e.g. arrow shaft flex
and oscillation during launch/flight, rate of arrow spin from
fletching placement, etc.). Finally, the unit helps a hunter
fine-tune his or her distance assimilation. Generally, hunters rely
on sighting pins to determine distance and aim. Sighting pins
require the hunter to guess at target distances and, therefore,
aiming characteristics as well. With the simulation unit of the
present invention, a hunter is able to determine the actual
distance to a target with the laser range finder, allowing him/her
to make better use of the sighting pins. Also, by using the laser
range finder during practice, the user can become more adept at
determining distances by assimilating what the eye sees in relation
to the yardage displayed by the unit.
[0085] In the preferred embodiment of the invention, bow sighting
pins may be incorporated in data capture unit 4 for display in the
LCD camera. This allows the user to aim with the unit 4/LCD
combination in the same manner as mechanical pins by employing a
utility in the unit that adjusts the pins up and down to compensate
for arrow drop. This embodiment of the unit also includes
crosshairs for aiming the range finder to determine the distance to
a target.
[0086] The first step in using this invention for simulated hunting
is to open the LCD screen in data capturing unit 4 for viewing. The
user may then power on the unit and select the proper mode (video,
still photo, etc.). Preferably, the LCD is programmed to display
the recording mode information, date and time, target acquisition
mode, distance to target, distance units (e.g., yards or meters),
aiming crosshairs, and battery conditions for the digital camera
and the laser range finder. The user may then position the LCD for
viewing to accommodate a comfortable position while aiming and
recording.
[0087] In firing, the user grips the bow, draws the string, and
takes aim in the same manner as when actually shooting an arrow.
The user may establish the distance to a target by activating the
laser range finder, and may then aim at the target with aiming
crosshairs and trigger the laser range finder a second time to
determine the distance to target. Data capture unit 4 captures the
data from the laser range finder and records the data for use by
the trajectory calculating software after firing. With the
discussed embodiment, it is desirable to trigger the laser range
finder again just prior to releasing the shot to ensure that
accurate distance to target data is recorded and used by the
trajectory calculating software. If the distance to target is
greater or less than 1 yard from the previous reading, the
trajectory calculations may be materially incorrect.
[0088] Preferably, the user is permitted to manually activate data
capturing unit 4 at any time. Thus, a hunter may choose to record
only the shot sequence and/or an animal's approach before and
departure after the shot sequence. Alternatively, the hunter may
choose to capture the entire experience for reference, cataloging,
or later recounting to friends.
[0089] When in shot simulation mode, the proximity sensors may be
activated by the bow-string movement and/or the MSR, to activate
the camera's recording start/stop functions. The unit may determine
when an arrow is released based on MSR and/or string movement. This
information may then be used in calculating the shot trajectory and
generating frame inlays by the video editing software. The software
preferably marks the video frames during this sequence so that the
video editing software recognizes the draw/release frames of the
shot for auto-editing the video. As described above, drawing the
string activates a proximity sensor which in turn produces a start
time that is fed to the digital camera so that it begins
recording.
[0090] When the shot is released, a proximity sensor triggers a
stop time that may then be fed to the digital camera, to stop its
recording. With those time stamps, unit 4 determines the time of
flight to the target based on the distance recorded from the laser
range finder and the speed of the arrow, which is preconfigured
into the software. In a more preferred embodiment, the MSR captures
speed data and eliminates the need to manually determine the speed
of the bow as illustrated in the software program. The software
determines the speed of the arrow by measuring the speed at which
the MSR goes from extension to rest. This allows data capture unit
4 to determine which frame in the video will be used to mark the
shot.
[0091] When the frames to be edited have been determined, a
pixel-splitting algorithm may be utilized to determine the pixel
cross-section on which to place the impact spot. A pixel takes up a
predetermined amount of space on the display screen for the data
capture unit. An appropriate formula may be derived to indicate the
change in pixel size given corresponding target distance changes.
Data capturing unit 4 and storage device 114 capture and record
this information for video editing. In one embodiment of the
invention, storage device 114 may be removed from the unit and the
video uploaded to the video software for editing. In the preferred
embodiment of the invention, a USB port downloads data captured by
the unit to a personal computer/PC (and its video editing software)
and uploads configuration data from the PC to the unit. This allows
the user to view the shot on the LCD monitor mounted on the bow.
Preferably, the video editing software is QuickTime software
available from Apple Computer, Inc.
[0092] In this preferred embodiment, data files are created during
the shot and saved to the storage unit to automate the trajectory
calculating and video editing steps. Data capture unit 4 may then
use these data files to time bow string release and stop to
calculate arrow speed, arrow release, and other variables necessary
to calculate the trajectory of the arrow. This configuration also
allows the unit to upload the variable data from the PC software to
calculate the flight path and impact point of the arrow and display
each on the LCD for the user. This configuration provides visual
confirmation of the outcome immediately after the shot without
having to proceed with the steps of downloading the video data from
the unit to the PC for calculating the trajectory. This embodiment
also allows multi-shot displays to create a cluster for the user
during the exercise. The shot clusters can be saved to the storage
device and loaded on the PC for further analysis. This provides the
user with the ability to study the effects of changing the
variables and how they influence overall performance. It also
allows the user to determine how other forces not compensated for
by the trajectory calculating software (such as hold and release
times, bow vibration, release movement, etc.) influence the
result.
[0093] A preferred embodiment of the invention also provides remote
auto updating of the trajectory calculating and video editing
software from a customer's computer, as shown in FIG. 21. This
enables the user to download software enhancements or changes and
new manufacturer data directly from the Internet.
[0094] As described above, simulated hunting unit 10 preferably
includes trajectory calculating software interfaced with video
editing software. The software applications are preferably
interfaced between the data capturing unit and a PC. In the
preferred embodiment, a USB port incorporated in the hunting unit
allows for downloading captured data files to the PC and uploading
configuration data from the PC to the unit. The PC software
preferably includes an arrow speed estimation program that uses
data files recorded by the data capturing components. The PC
software also preferably incorporates an arrow trajectory
calculator which uses trajectory algorithms to calculate the
trajectory of the simulated arrow. The arrow speed application may
use data captured by the unit such as poundage draw of the bow,
arrow weight, fletching type, and other variables to determine
arrow speed. Data which may be used by the trajectory software
includes distance to target, arrow weight, arrow speed, fletching
type, and other variables. Information about the trajectory
calculator may be found in Physical Laws of Archery, 1988 (4.sup.th
ed. 1991) by T. L. Liston. Additional information on trajectory
algorithms is available at
http://dspace.dial.pipex.com/town/terrace/qq53- /.
[0095] The trajectory calculator interfaces with video editing
software such as QuickTime for Java--Developer Edition, available
from Apple Computers, Inc. Using the calculations performed by the
trajectory software and the video data recorded by the CCD, the
software may be used to determine and display the arrow's flight
path and point of impact. The video editing software supplies frame
inlays of projectiles (e.g., arrows) to display the flight path and
point of impact on the target. In a preferred embodiment, the user
can view this information, such as on an LCD screen associated with
the hunting apparatus, immediately after the simulated hunt.
[0096] A further software application which may be used with the
present invention is a target size estimation program allowing the
user to estimate the size and weight of the target animal. The
program is based on the pixel division calculation functionality
used in the trajectory/impact marking program. Because area mass by
pixel is known throughout various ranges, the program is able to
determine the length and width of objects within the frame.
[0097] Industry algorithms exist to calculate animal weight based
on length, width, and girth dimensions of an animal. Thus, using
the software of the present invention, a user can provide the size
of a deer or the size of its rack, for example, and the software
will provide its dimensions, through use of the pixel splitting
algorithm referenced immediately above, using readily commercially
available information. For example, Pope & Young and Boone
& Crocket use antler dimension (spread, tine length, etc.) to
score an animal for record purposes.
[0098] FIGS. 9-24 outline a preferred embodiment of the software
applications' operation for using in simulated bow firing and
tracking. FIG. 9 shows the overall configuration of the software.
FIG. 10 shows the configuration of the "Main Page" application in
FIG. 9. Variables affecting the final product include changing the
data configuration and selecting the type of shaft, bow, or arrow.
FIG. 10 also provides the option of initiating the simulation.
[0099] By modifying existing software illustrating animal anatomy,
the software of the present invention may be configured to provide
information to the hunter concerning the shot result. For example,
the software may analyze the shot location and indicate whether the
shot was a "kill" or "grazing" shot. In addition, the software of
the present invention may also be modified to account for and
provide other information, such the speed of the animal at the time
of the shot.
[0100] Hunting apparatus 10 may be provided with night vision
capability, if desired, such as by incorporating a NIR CCD-65L
available from ITT Industries. The CCD may be mounted in the MSR,
as described for the hydraulic version. The CCD-65L provides a
non-intensified NIR low-light-level imaging technology, and is
believed to be ideally suited for use in hunting applications both
in day and night conditions. With a faceplate sensitivity of
0.00003 foot-candles (twilight=1 foot-candle) and an advanced
automatic gain control algorithm, the camera delivers useable
imagery under wide dynamic lighting conditions. Benefits of the
CCD-65L includes exceptional low-light performance; high
sensitivity in NIR; auto-iris drive signal; "C"-mount lens
interface; low power consumption; and rugged construction.
[0101] In the preferred embodiment of the invention, a commercially
available clinometer, such as Accustar Single Axis clinometer, may
be incorporated to provide angle information of the hunting
apparatus. The angle information obtained from the climometer may
be used in conjunction with the trajectory software to provide
accurate uphill and downhill shot trajectory. Shooting at up and
down hill angles, such as from a tree stand, is common in hunting.
Currently known technology does not take into account the effect
degrees of slope have on projectile flight. Operating
specifications for the Accustar clinometer include: tilt range
(degrees): -60.00 to 60.00; number axis: 1.0; accuracy (degrees):
1.0; operating temperature: -22.0 to 149 F; weight: 2 .oz;
diameter: 2 inches; height: 1.2 inches. Commercially available
altimeters may also be used to render shooting, particularly bow
shooting, even more precise when shooting in altitude.
[0102] To further describe a preferred embodiment of the invention,
FIGS. 6a-6h illustrate exemplary screen shots from a display screen
on an associated computer which a user/hunter might encounter
during use of the present invention. FIG. 6a, for example,
illustrates one example of a "Main Page" which may correspond to
the logical flow shown in FIG. 10, enabling the user to modify
existing configurations, create new configurations or change to
existing configurations. From this page, the user may also edit bow
information, arrow information, shaft selection, and the simulator.
FIG. 6b illustrates a "Speed Page" which may correspond to the
logical flow shown in FIG. 11, enabling the user to calculate the
initial speed of an arrow. For example, the user may be required to
enter a certain number of marks (e.g., between 2 and 5), to
determine feet/sec speed of the projectile exiting the hunting
apparatus. FIG. 6c illustrates a "Trajectory Page" which may
correspond to the logical flow shown in FIG. 12, enabling the user
to display the flight a projectile such as an arrow may take in
order to hit the desired sight line at a given yardage. FIG. 6d
illustrates a "Build Arrow" page which may correspond to the
logical flow shown in FIG. 19, enabling a user to populate the data
needed by the trajectory software, using a preconfigured database
of manufacturer arrow data, by having the user enter information
concerning the (e.g.) arrow(s) being used. FIG. 6e is a schematic
view of a "Shaft Selector" page which may correspond to the logical
flow shown in FIG. 16, enabling the user to select an arrow that
best suited for his/her bow configuration. FIG. 6f is a schematic
view of a "Shot Images" page which may correspond to the logical
flow shown in FIG. 22, enabling the user to change the image that
will be displayed on the simulator at the time of impact. FIG. 6g
is a schematic view of an "Arrow Images" page which may correspond
to the logical flow shown in FIG. 23, enabling the user to select
the image that will be used to display the flight of the arrow
while using the simulator. FIG. 6h is a schematic view of a
"Simulator" page which may correspond to the logical flow shown in
FIGS. 13-15, enabling the user to watch the hunt along with
displaying the selected arrow image following the flight of the
arrow and the selected shot image at the point of impact. It will
be understood that appropriate changes may be made to the software
described here to accommodate the use of other projectiles such as
bullets, as will be understood by those of ordinary skill in the
art.
[0103] The present invention also permits a hunter to "pre-fire" a
shot and view its flight path and impact point on the display
screen, and then make a "pre-shot adjustment" by modifying shot
parameters. Known simulated hunting devices, which do not allow
display of the projectile's flight path, do not permit such a
pre-shot adjustment.
[0104] Of course, it should be understood that various changes and
modifications to the preferred embodiments described herein will be
apparent to those skilled in the art. For example, the trajectory
calculating software and video editing software described above may
be specially adapted for use with simulated hunting utilizing guns
firing projectiles. As another example, the MSR 2 and data capture
unit 4 may be combined into a single unit possessing, for example,
an integrated data chip in which the unit provides the combined MSR
and data capture unit functionalities. As yet another example, the
MSR described above may be pneumatic/air-actuated and/or
gas-driven. As still another example, the projectile or arrow
flight path and target point may be displayed, alternatively, on an
LCD associated with the data capture unit and/or on a display
screen associated with computers, PDAs or other electronic
equipment communicating with the hunting apparatus. It will also be
understood that the video editing software and trajectory
calculating software may be combined into a single program.
[0105] Other changes and modifications constituting insubstantial
differences from the present invention, such as those expressed
here or others left unexpressed but apparent to those of ordinary
skill in the art, can be made without departing from the spirit and
scope of the present invention and without diminishing its
attendant advantages. It is, therefore, intended that such changes
and modifications be covered by the following claims.
* * * * *
References