U.S. patent number 3,789,402 [Application Number 05/130,284] was granted by the patent office on 1974-01-29 for electronic signal device and method.
Invention is credited to Richard D. Heywood, Charles E. Seagle.
United States Patent |
3,789,402 |
Heywood , et al. |
January 29, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
ELECTRONIC SIGNAL DEVICE AND METHOD
Abstract
A completely self-contained portable signal device and method
including individually programmable timer circuitry which, for
example, (a) signals a proper striding sequence by combining a
selected lap rate and a selected stride length and electronically
reduces the combined information to an audible sound pattern
representing a precise stride rate selected for the individual; (b)
signals proper spacing over a track by electronically dividing the
track distance into a predetermined plurality of segments,
combining the track distance with a selected time period and
developing an audible sound at spaced time intervals representing
each segment of the track distance; and/or (c) signals time
increments at any regular interval to define the limits of running
and rest periods. The method includes programming the signal device
for the specific needs and requirements of use as to striding,
spacing or timing or any combination of those functions.
Inventors: |
Heywood; Richard D. (Mesa,
AZ), Seagle; Charles E. (Salt Lake City, UT) |
Family
ID: |
22443954 |
Appl.
No.: |
05/130,284 |
Filed: |
April 1, 1971 |
Current U.S.
Class: |
340/384.71;
340/309.4; 340/323R; 340/331; 377/5; 331/111; 340/323B; 340/328;
368/251; 377/20 |
Current CPC
Class: |
A63B
71/0686 (20130101) |
Current International
Class: |
A63B
69/00 (20060101); G08b 003/00 () |
Field of
Search: |
;325/66,64,118
;340/323,332,384E,331 ;331/111 ;58/13E ;84/484 ;307/293 |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
Stella, "Pocetable Metronome," Popular Electronics, July 1964, p.
44 .
Lemen, "Build A Stopclock," Popular Electronics, Dec. 1967, pp.
45-48.
|
Primary Examiner: Habecker; Thomas B.
Attorney, Agent or Firm: Workman; H. Ross
Claims
What is claimed and desired to be secured by United States Letters
Patent is:
1. Apparatus for signaling a predetermined stride sequence to a
runner comprising:
a power source;
means energized by the power source to develop a pulse train;
first means controlling the development of the pulse train to
correspond to any one of a plurality of stride lengths;
second means controlling the development of the pulse train to
correspond to any selected one of a plurality of lap time
rates;
means processing the output of the first and second controlling
means to develop an integrated result representing a mathematical
combination of stride length and time rate; and
means responsive to the output of the processing means to generate
a signal to the runner, the signal representing the stride
sequence.
2. Apparatus for signaling a predetermined stride sequence to a
runner as defined in claim 2 further comprising:
means for indicating to a runner invervals corresponding to running
and rest periods comprising:
other means for generating an electronic pulse;
means for programming the other pulse generating means to develop a
signal over a time range which corresponds to predetermined running
and rest periods; and
means responsive to both the pulse train as defined in claim 2 and
the other pulses to develop an audible sound.
3. Apparatus for signaling a predetermined spacing of a runner over
a known distance comprising:
a power source;
means for developing an electronic pulse train having uniformly
spaced signal pulses;
means for expanding or contracting the spaces in the pulse train so
that a single predetermined number of electronic pulses appear in
any one of a plurality of time increments to divide the time
increment into a predetermined fraction;
means for selecting any one of the plurality of time increments;
and
means responsive to each of the signal pulses to develop an audible
sound representative of the fraction of the time increment.
4. A method of developing consistent stride with an electronic
striding device, the steps of:
measuring the preferred stride length of a runner and selecting the
rate at which a running course is intended to the traversed;
programming the electronic striding device and electronically
processing the stride length and course rate parameters to a pulse
train representing a striding sequence;
developing a detectable signal with each pulse; and communicating
the striding sequence to the runner.
5. A method as defined in claim 4 further comprising attaching the
striding device to the person of the runner.
6. A method as defined in claim 4 wherein said communicating step
comprises placing an ear phone on the ear of a runner and
delivering audible signals through the ear phone representative of
the striding sequence.
7. A method of spacing a runner along a track marked with uniformly
spaced markers, the steps of:
providing an electronic spacing device carried by the runner;
programming the spacing device by electronically inputting into the
device parameters representing a number of markers and time so as
to divide any one of a plurality of time increments into a uniform
number of fractions corresponding to the number of markers;
selecting a preferred time increment for traversing the track;
and
signaling the runner at each precise moment he should reach a
predetermined position relative to the markers.
8. A method of precisely timing the activity of a runner so that
the runner can precisely determine running and rest periods, the
steps of:
determining any one of a plurality of time increments corresponding
to a running or rest period;
providing an electronic timing device;
programming the timing device to develop a periodic signal
corresponding to the determined increment which represents
predetermined running or rest periods; and
communicating an audible sound to the runner at the conclusion of
each lapse of the time increment.
9. A method of signaling a predetermined spacing to a runner over a
known distance comprising:
developing an electronic pulse train having uniformly spaced signal
pulses;
expanding or contracting the spaces in the pulse train so that a
single predetermined number of electronic pulses appear in any one
of a plurality of time increments to divide the time increment into
a predetermined fraction;
selecting any one of the plurality of time increments; and
developing an audible sound responsive to each of the signal pulses
representative of the fraction of the time increment.
10. The method of signaling a predetermined spacing to a runner
over a known distance comprising:
developing an electronic pulse train having uniformly spaced signal
pulses;
expanding or contracting the spaces in the pulse train so that a
single predetermined number of electronic pulses appear in any one
of a plurality of time increments to divide the time increment into
a predetermined fraction;
selecting any one of the plurality of time increments; and
developing a humanly perceptible signal responsive to each of the
signal pulses representative of the fraction of the time increment.
Description
BACKGROUND
1. Field of the Invention
The invention relates to programmable electronic signal apparatus
and method and more particularly to improved apparatus and method
for training persons for athletic activity.
2. The Prior Art
Of the problems faced by every athlete, development of timing and
consistency are among the most critical. For example, in track
events much effort is expended to develop a consistent stride. It
is known that stride can be developed by practicing running a
measured distance or lap in a predetermined number of steps.
However, it is almost impossible for a runner to know whether his
stride is uniform or not. It has been found that when a runner
tires, he unconsciously shortens his stride which ultimately
adversely affects his rhythm and speed.
In considering ways in which to improve striding, it is recognized
as a possibility that a running track be marked at specific
intervals indicating a preferred stride length. However, this
alternative would be manifestly impractical because each runner has
a particular stride length which may be unique to himself at which
he is a most efficient runner. Because no way has been yet
developed to precisely determine how many steps are required over a
lap until the lap is completed, there has been no way except trial
and error for a runner to determine whether his stride length is
too long or too short or inconsistent in length. Moreovoer, it is
frequently desirable to develop striding at locations other than a
marked running track.
Accordingly, the present invention provides a way of electronically
programming an individual runner's stride length with the rate at
which he intends to traverse a known distance. The programmed
electronic device then communicates an audible signal to the runner
for each stride or for every other stride at precisely the moment
he should take the step so that the runner can develop consistency
in stride length at any time and at any location in which he uses
the signal device.
Spacing is also critically important to runners. For example,
maximum speed and efficiency of a runner can be determined by the
coordination of pace over the entire distance of the track.
Recognizing the problem, U.S. Pat. No. 2,457,968 discloses a
multiplicity of signaling devices arranged in spaced relation
adjacent the track upon which a runner practices. The mentioned
prior art patent focuses primarily on indicating to the runner the
position of the track where he should be at a given time.
This method was improved upon by the invention in U.S. Pat. No.
3,492,582 by Richard Heywood. The mentioned Heywood patent uniquely
provided a radio receiver carried by the runner which was activated
by the coach or some other party assisting the runner in his
workout. Signals from the receiver were audibly carried to the
runner to help develop proper pace and rhythm at the direction of
the person operating the sending console. However,
disadvantageously, the Heywood system required the runner to work
in coordination with his coach or another person in order to
properly develop rhythm and pacing. It is much preferred that
runners have opportunity to perfect pacing and rhythm at any
desired time whether in the presence of the coach or not and
whether at a regular running track or at any desire running
location remote from the regular track.
It is also frequently desirable for a runner to engage in physical
exercise for a known time period and, thereafter, to rest for a
specific known time period. For this reason, it is desirable to
have a self-contained timing device which specifically signals the
runner or other athlete at preselected time increments. The runner
then can make his running and rest times consistent and
precise.
BRIEF SUMMARY AND OBJECTS OF THE INVENTION
The present invention comprises novel apparatus and method for
signaling a runner or other athlete when to stride, and when his
spacing and rhythm are accurate and, when desired, precise time
increments for running and resting. Furthermore, the present
development is completely self-contained so that the runner or
other athlete can program the apparatus for his own individual
needs and capabilities and the device will operate to signal proper
striding, spacing and/or timing regardless of where the athlete
chooses to practice or work out. The present invention also
includes an improved method of training and coordinating an athlete
so that he can develop his own timing and consistency in his
activity.
It is, therefore, a primary object of the present invention to
provide an individually programmable signal apparatus for
developing timing and consistency for any one of a variety of
activities.
It is another primary object of the present invention to provide a
novel method for signaling information to an athlete or other
person, the information being pre-programmed for specific needs and
desires.
One still further object of the present invention is to provide
improved apparatus and method for developing consistent stride in a
runner.
It is another valuable object of the present invention to provide
method and apparatus for developing optimum spacing of a runner
over a predetermined distance.
Another, and no less important, object of the present invention
includes method and apparatus for signaling work out and rest
periods of predetermined time increments for athletes.
Another valuable object of the present invention is the provision
of a unitary electronic construction used for developing athletic
skill and consistency at any location in which the activity can be
performed.
It is another highly significant object of the present invention to
provide apparatus which is easily programmable to the needs or
desires of any person regardless of size and stamina.
These and other objects and features of the present invention will
become more fully apparent from the following description and
appended claims taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an enlarged perspective illustration of the presently
preferred apparatus embodiment of the invention specifically
illustrating the control dials, circuitry housing and ear
phone;
FIG. 2 is a transverse cross-sectional view taken along lines 2--2
of FIG. 1;
FIG. 3 is a schematic block diagram illustrating the connection of
the functional modules available in one presently preferred
embodiment of the invention; and
FIG. 4 is a schematic circuit diagram illustrating one presently
preferred circuit for use with the apparatus of FIG. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The Apparatus of FIGS. 1-3
Although the illustrated embodiment of the invention may be used
for any one of a wide variety of athletic activities and also for
any one of a wide variety of non-athletic activites where a signal
generated in a predetermined time pattern is useful, the present
invention will be described, for simplicity, in connection with
speed and distance runners.
Generally speaking, for a runner to have maximum effectiveness, he
must be able to maintain a consistent running pace over the entire
length of the running course. Moreover, the runner must have
maximum consistency in his stride. It has been found that where a
runner maintains a consistent stride and runs at a uniform pace, he
tends to tire less quickly and is able to achieve maximum distance
in a minimum time.
In practice, however, as a runner becomes fatigued, there is a
tendency to modify his pace or stride length. For example, the
fatigued runner tends to maintain a consistent stride length but
take fewer steps. Alternatively, a runner may take the same number
of steps over the running course but shorten the stride length.
Until this present invention, it was difficult if not impossible,
for a fatigued runner to determine for himself whether or not he
was adjusting his pace or stride.
According to the present invention, a self-contained signal system
generally designated 20 is provided. The signal system is
maintained within a housing 22 which is preferably oval in
configuration and formed of lightweight plastic. Preferably, the
housing 22 is sufficiently sized so that it can be easily carried
in a sweatband on the head, upon the runner's clothing near his
waist or some other convenient location. One suitable housing 22
had dimensions of about 3 inches .times. 11/2 inches .times. 1/2
inches. The housing 22 is provided with a coupling jack 24 into
which a male plug 26 is selectively connected. An elongated
conductor 28 connects the coupling 26 to an ear phone or ear plug
30, ear plug 30 providing audible sound communication to the runner
as will be subsequently more fully described. As shown in FIG. 2,
the interior of the housing 22 is hollow to accommodate the power
source and electronics (not shown). Preferably, an elastomeric
cushion 60 formed of synthetic rubber or the like may be used to
make wearing the device 20 on the body more comfortable. It is also
possible to eliminate the ear phone 30 and substitute sound
developing structure such as a speaker (not hown) to be located in
the housing 22 so that the housing 22 may be placed immediately
over the ear or, when the housing is located elsewhere sound may be
audibly radiated from the speaker.
In the illustrated embodiment of the invention, the strider module,
spacer module, timer module and audio module are all combined in a
single unit (see FIG. 3). However, it should be appreciated that
the audio module can be combined with any combination of the other
modules to form a signal system which is more specific to desired
needs.
As shown in FIG. 1, the apparatus 20 is provided with manually
controllable dials 34, 36, 38, 40 and 42. Dials 34 and 36 are used
to determine the signal representations of the runner's stride. For
example, the dial 34 is rotatable to any selected one of a
plurality of stride lengths, the dial being provided with indicia
44 representative of stride length calibrated in inches. The dial
36 can be rotated to any one of a plurality of positions to
correspond to a particular rate at which a running course or lap is
to be traversed. Dial 36 has associated therewith a plurality of
indicia 46 representative of lap rate calibrated in seconds.
In order for a runner to correctly gauge his stride, it is only
necessary for him to adjust dials 34 and 36 so that dial 34
corresponds to his measured preferred stride length and dial 36
corresponds to the length of time in which he intends to complete
the running course or a lap of the running course. An electronic
signal developed in the strider module 50 (see FIG. 3) is then
converted by the audio module 52 into a short pulse of sound
precisely at each moment when the runner should terminate one
stride and commence another. In some instances, where the lap rate
is comparatively fast or where the stride length is comparatively
short, it may be desirable to develop a sound pulse for alternating
strides in order to avoid sound pulses which are so close together
as to become annoying.
On a running course or track which is marked, it is frequently
advantageous to periodically signal a runner so that he becomes
aware of whether he is ahead or behind his predetermined running
speed. For example, if the runner intends to traverse a 440 yard
lap, the lap may be divided into any predetermined number of
segments. In the illustrated embodiment, the lap is to be divided
into eight segments; however, any suitable number of segments could
be used. Where eight segments are used on a 440 yard track, markers
may be spaced over the running track 55yards apart. The runner may
then set dial 38 to any one of a variety of time periods
represented by indicia 48. For example, if the dial 38 is set at 60
seconds, eight electronic pulses are spaced 7.5 second apart. The
pulses are developed in the spacer circuitry 54 (see FIG. 3) and
are communicated to the audio module 52. Thus, the runner can
correspond each sound pulse with his position relative to the
markers on the track to determine his actual speed as compared to
his predicted speed.
If desired, the runner may adjust dial 38 to correspond to a
48-second lap. Then, the pulse spacing developed by the spacer
module 54 would be 6 seconds apart and the runner should cross each
marker when he hears the sound pulse each 6 seconds. If he is
behind the marker, he may increase his stride length or pace to
correct. If his position is ahead of the marker he may decrease his
stride length or pace accordingly.
The use of the spacer module 54 also has effective application for
those who run high and low hurdles. For example, the spacer module
54 can be adjusted to divide the hurdle track into the number of
segments corresponding to the number of hurdles. The runner can
then select the speed at which he intends to complete the course by
setting dial 38. An audible signal will then be communicated to the
runner at the precise moment he should reach each hurdle.
It is recognized that runners traversing a course that is not
marked, such as in a cross-country run, are most effective when
running and rest periods are specifically known. For this reason,
an independent timing module 56 (FIG. 3) was included in the
apparatus 20. The timing module is controlled by dial 40 (FIG. 1)
which is provided with spaced indicia 49 representing time in
minutes. Typically, the time range accommodated by dial 40 is 30
seconds to 6 minutes. If a runner wants to run for five minutes, he
can set the dial 40 on the 5-minute mark and after the lapse of 5
minutes, a pulse will be generated by the timer module 56 and
communicated to the audio module 52 to develop a distinct sound
pulse signaling the runner that the 5-minute period is completed.
If the runner desires a 15-minute run, he can allow three 5-minute
sound pulses to sound before stopping to rest. Clearly, if desired,
the timing range accommodated by dial 40 may be expanded to include
any desired time period.
With continued reference to FIG. 1, dial 42 is connected directly
to the audio module 52 (FIG. 3) and is provided with indicia 51
which represent units of volume for the audio module. Thus, dial 42
determines the volume of sound received by the runner so that the
runner may control the volume to his particular needs. As will be
appreciated from subsequent description, each of the modules 50, 54
and 56 may be separately incorporated into the apparatus 20 with
the audio module 52 or, as described, all three may be incorporated
together.
The power source for the apparatus 20 is preferably a 7-volt dry
cell battery, although any suitable power source could be used.
Additionally, as shown in FIG. 1, a switch 58 is provided to
function as an "on-off" switch to preserve the power supply.
Another switch 66 is provided to function as a reset for the
modules 50, 54 and 56. When switch 66 is actuated, each of the
modules 50, 54 and 56 immediately restarts its timing cycle. This
is particularly advantageous, for example, when a runner commences
his run and wishes to begin the timing sequence at a particular
point, such as the starting line. Clearly, if desired, a separate
reset switch may be provided for each of the modules 50, 54 and 56
(FIG. 3). Where separate reset switches are provided, actuating any
one or more of the switches disables the corresponding module so
that any combination of modules is usable exclusive of the
others.
The Circuit of FIG. 4
One presently preferred circuit embodiment accommodating the
above-described advantageous results is illustrated in FIG. 4 and
will now be described. The basic circuit used in each of the
modules 50, 54, 56 and 52 is a relaxation oscillator using a
programmable unijunction transistor (PUT). The timing is linearized
by charging a timing capacitor with a constant current source. It
is recognized that digital timing circuitry could also be used, but
for simplicity the circuitry of FIG. 4 will be described.
Referring more specifically to FIG. 4, a dry cell battery 70 is
connected directly to the strider module 50 to provide power to the
system. Switch 58 (shown also in FIG. 1) may be selectively opened
to deprive the strider module 50 of power. The strider module
includes timing resistors P1, P2, P3, P4, P5 and R3. The timing
resistors determine the rate at which the timing capacitor C1 will
charge. P1 and P2 are the main timing potentiometers each having a
typical value of 100K and are controlled by dials 34 and 36, shown
in FIG. 1. Capacitor C1 has a typical value of 10 microfarads
(.mu.fd).
Timing resistors P3, P4 and P5 are trim potentiometers (trim pots)
used to calibrate the timing circuit so that it will track linearly
over the calibrated dials 34 and 36 (see FIG. 1). Typically, each
of the timing resistors P3, P4 and P5 has a value of 500K. Timing
resistor R3 is a current limiting resistance so that in the event
P1, P2 and P3 are set at minimum resistance, transistor Q1 will not
be damaged by a current surge which may occur when switch 58 is
first closed.
Transistor Q1 forms a constant current charging source for timing
capacitor C1. Thus, the charge on capacitor C1 will be a linear
ramp charge instead of an exponential current waveform which would
be developed if capacitor C1 were connected directly into the power
source 70. In order to insure the linearity of the charging current
from transistor Q1, resistors R1 and R2 are connected into the
transistor base to establish bias on transistor Q1. Resistors R1
and R2 also, to some extent, affect the circuit timing range in
concert with timing resistors P1 and P2. Typically, resistors R1
and R2 have values of 10K and 22K, respectively.
A programmable unijunction transistor (PUT) Q2 is connected at its
anode to the power source 70 through transistor Q1. A positive bias
voltage at the gate 72 of Q2 is developed through the voltage
divider formed by resistors R5 and R6 so that current is normally
not conducted from the anode through the cathode to ground.
Typically, resistors R5 and R6 have a value of 82K. The cathode of
transistor Q2 is connected to the common (negative or ground) bus
74 of the circuit 50. Diodes D1 and D2 are isolation diodes used to
isolate transistor Q2 anode 76 from the gate 72.
Transistor Q3 is the timing circuit output transistor. Transistor
Q3 is normally biased ON by resistor R7, resistor R7 typically
having a value of 22K. Resistor R8 limits the current flow through
transistor Q3. Since transistor Q3 is normally biased ON, the
negative (-)lead of capacitor C1 is connected to ground through the
Q3 base-to-emitter junction.
Having described the circuit components, the operation of the
circuit 50 will now be described. When switch 58 is closed, power
from the source 70 causes the capacitor C1 to charge linearly
through transistors Q1 and Q3. When the voltage on capacitor C1
exceeds the gate bias voltage on PUT Q2, PUT Q2 fires, connecting
its anode to ground through the cathode,thus allowing capacitor C1
to discharge rapidly. This rapid discharge current turns transistor
Q3 OFF and allows the collector of transistor Q3 to rise from
approximately 0 to about the voltage of the power supply 70. The
collector of transistor Q3 remains high until capacitor C1 has
discharged completely through resistor R7. The high voltage at the
collector of transistor Q3 forms a signal pulse, the width of which
is determined by the duration of the high voltage at the collector
of transistor Q3. Thus, the width of the signal pulse developed at
transistor Q3 is determined by the value of the C1-R7 time
constant.
The signal pulse output from transistor Q3 is coupled through diode
D3 and is used to gate (modulate) the audio oscillator in the audio
module 52, hereinafter more fully described.
Switch 66 in the strider module 50 is used as a reset switch. When
switch 66 is closed, the gate voltage at PUT Q2 rises to the
voltage of the power source 70 and PUT Q2 is inhibited from firing
until switch 66 is opened again. At the same time, capacitor C1 is
charged rapidly through diode D1 and resistor R4 so that the reset
action requires only momentary closing and opening of switch
66.
The audio module generally designated 52 is also a fixed-time PUT
relaxation oscillator operating at an audible frequency of
approximately 800 Hz. The timing circuit is formed by a series
connection of resistor R10 and capacitor C2, each having typical
values of 8200 ohms and 0.1 .mu.fd, respectively. Resistors R11 and
R12 form the gate bias divider for PUT Q5. Resistor R9 connects the
base of transistor Q4 to ground bus 74. Resistors R11, R12 and R9
have typical values of 10K, 68K and 100K, respectively. Transistor
Q4 functions as the oscillator gate as will now be more fully
described.
When the positive signal pulse from transistor Q3 in the strider
module 50 appears at diode D3, transistor Q4 is turned ON and
capacitor C2 charges and discharges through transistor Q4. It can
therefore be appreciated that PUT Q5 will oscillate at an audio
rate as long as the collector at transistor Q3 in the strider
module 50 develops a high voltage.
The audio signal generated at PUT Q5 is taken from coupling jack 24
through the conductor 28 to the ear phone 30 (see FIG. 1).
Preferably, potentiometers P6 is connected between the cathode of
PUT 5 and ground bus 74 to control the volume available at jack 24.
Potentiometer P6 having a typical value of 500 ohms is preferably
controlled by dial 42, shown in FIG. 1.
The spacer module 54 and the timer module 56 are, in most respects,
substantially identical to the strider module above described. Both
circuits comprise a relaxation oscillator using a programmable
unijunction transistor, the timing of which is linearized by
charging a timing capacitor with a constant current source.
Therefore, only the differences in the spacer module 54 and the
timer module 56 will be described.
The spacer module 54 is provided with timer resistor P7 and P8
which are substituted for timing resistors P1, P2, P4 and P5 of the
strider module 50. Timing resistor P8 is a trim pot having a
typical value of 1 Megohm (Meg) and timing resistor P7 is a main
timing potentiometer having a typical value of 500K. Timing
resistor P7 is preferably adjusted by dial 38, shown in FIG. 1.
Capacitor C3 in the spacer module 54 has been substituted for
capacitor C1, capacitor C3 having a typical value of 10 .mu.fd.
Resistor R13 has been substituted for resistor R7 in order to
change the bias on transistor Q3, resistor R13 having a typical
value of 39 K. Substitution of resistor R13 for resistor R7 changes
the time constant over the C1-R7 time constant in the strider
module 50, the C3-R13 time constant being selected to determine the
duration of the signal tone developed by audio module 52. Trim pots
P3 and P8 can be adjusted to divide the running course into a
variety of numbers of segments. In the illustrated embodiment, the
time period determined by P7 will be divided into eight equal
segments.
The signal pulse developed at the collector of Q3 appears at diode
D4 and is communicated directly to the audio module 52 at the base
of transistor Q4.
The timer module 56 differs from the strider module 50, previously
described, in that time resistors P9, P10, P11 and R14 have been
substituted for corresponding timing resistors P1, P4, P2, P5, P3
and R3. Timing resistors P10 and P11 are typically 5 Meg and 1 Meg
trim pots, respectively. Timing resistor P9 is typically a 5 Meg
main potentiometer which is controlled by dial 40, shown in FIG. 1.
The bias on transistor Q3 is determined by resistor R15 which
typically has a value of 56K. Also, the capacitor C4 has been
substituted for capacitor C1, capacitor C4 having a typical value
of 22 .mu.fd. The signal pulse developed at diode D5 is
communicated directly to the base of transistor Q4 in the audio
module 54. The C4-R15 time constant is selected to give the desired
range of time signals.
It can well be appreciated from the foregoing that any desired
combination of the modules 50, 52, 54 and 56 may be coupled
together to provide the advantageous results made possible by this
invention.
The Method
Summarizing the method of the invention set forth in the foregoing
description, a runner may use the signal apparatus 20 to determine
his striding, spacing and running and rest timing. It is
unnecessary for the runner to make detailed calculations or to have
an assistant help him to determine his timing. All that is
necessary for the runner to program his stride is for the runner to
know his preferred stride length and to select a reasonable time in
which to complete a running course. The runner can then easily
program his stride by setting dials 34 and 36 to represent his
preferred stride length and the desired time for completing th
running course.
When the runner actuates the switch 58, the automatic timing will
begin. Preferably, at the commencement of the run or at some
preselected intermediate point, the runner will actuate the reset
switch 66 so as to start the timing cycle at the precise moment he
commences his run or passes a marker or the like. The runner will
hear a distinct signal tone at the precise moment he should
commence each stride or, alternatively, every other stride. The
repetition rate of the signal tone will be determined by the time
period represented by dial 36. By using this technique, a runner
may practice developing a consistent stride even though he is
completely by himself over any course and at any desired time.
A runner may also use the spacer module in concert with or
independent from the strider module above mentioned. The spacer
module is particularly advantageous when the running course is
provided with spaced markers at regular intervals. By properly
setting dial 38 to represent the desired completion time for a lap
or, if desired, for the entire running course, a signal tone will
be developed representing a predetermined fraction of the lap time
period. For example, in the illustrated embodiment, the spacer
module divides the lap time into eight equal segments and
regardless of the spacer time setting of dial 38, eight equally
spaced signal tones will be heard.
Where the strider and spacer modules are used together, it may be
desirable to develop signal tones for each which are distinct one
from the other. For example, the strider module may develop a
series of high tones indicating each step the runner should take
and at spaced intervals throughout the series of signal tones from
the strider, a signal tone in the lower audible frequency range can
be developed by the spacer module. This allows the runner to
distinguish between the two signals because of the tone of the
signal. In the illustrated embodiment, duration of the audio tone
distinguishes the particular signaling module.
Similarly, dial 40 may be adjusted to determine the signal pulse
generated by the timer module. At whatever time increment dial 40
is set by the runner, a signal tone will be developed repeatedly at
that time increment. Thus, a runner can know the precise duration
of time of his rest and running periods by keeping track of the
sound tones developed by the timer module. In the event the timer
module is used with either the spacer module or the strider module
or both, it may be desirable to have the signal tone developed by
the timer module differ from the signal tones developed by the
spacer and/or strider module to assist the runner in distinguishing
between the signals.
The invention may be embodied in other specific forms without
departing from its spirit or essential characteristics. The
described embodiments are to be considered in all respects only as
illustrative and not restrictive and the scope of the invention is,
therefore, indicated by the appended claims rather than by the
foregoing description. All changes which come within the meaning
and range of equivalency of the claims are to be embraced within
their scope.
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