U.S. patent number 3,846,826 [Application Number 05/323,874] was granted by the patent office on 1974-11-05 for direct television drawing and image manipulating system.
Invention is credited to Robert E. Mueller.
United States Patent |
3,846,826 |
Mueller |
November 5, 1974 |
DIRECT TELEVISION DRAWING AND IMAGE MANIPULATING SYSTEM
Abstract
This invention enables a person to paint or draw directly into
color television. No special probe or stylus is required since a
person can use brushes or pens, fingertips, rubber stamps, or any
drawing or painting object whatsoever. At the same time, a person
can play his free hand over a piano-like keyboard to synthesize
images by manipulating or altering the images or forms as they are
introduced. It is applicable to graphic productions of all sorts,
computer input-output graphic processing systems, for visualizing
mathematical transformations, or for use with scanning lasers or
electron microscopes that etch or score.
Inventors: |
Mueller; Robert E. (Roosevelt,
NJ) |
Family
ID: |
26866789 |
Appl.
No.: |
05/323,874 |
Filed: |
January 15, 1973 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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171155 |
Aug 12, 1971 |
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Current U.S.
Class: |
348/207.99;
345/180; 345/22; 345/168; 348/239 |
Current CPC
Class: |
G06F
3/03545 (20130101); G06F 3/04845 (20130101); G06F
3/033 (20130101) |
Current International
Class: |
G06F
3/033 (20060101); H04n 009/02 () |
Field of
Search: |
;178/7.6,7.7,5.2,5.4,DIG.6,7.5SE ;179/1M,1SA
;340/337,365P,324A,324AD,324.1,324R ;358/81 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Murray; Richard
Parent Case Text
This application is a continuation-in-part of U.S. application Ser.
No. 171,155 filed Aug. 12, 1971, now abandoned.
Claims
What I claim is:
1. In a real-time television drawing system comprising
means to scan over a given area in synchronism with a television
timing signal;
means to produce a plurality of image points within said given
area;
means to produce electrical signals in response to said image
points;
means for generating a plurality of voltages capable of changing
said scan in toto according to various patterns;
means for superimposing said voltages selectively on said scanning
means;
means including a display system synchronized to said television
timing signals responsive to the electrical signals, for producing
at points corresponding to said image points the pattern selected
during the time of each produced image points.
2. A system according to claim 1,
wherein said means for superimposing said voltages on said scanning
means includes a manually operated piano type keyboard.
3. A system according to claim 2 wherein the keys of said keyboard
vary the magnitude of the voltages proportionately to the pressure
applied to the keys.
4. A system according to claim 3 wherein said keyboard actuates a
sound producing instrument.
5. A system according to claim 1 wherein said display system
includes a color television display device, and means for supply
color television signals to said display device in response to said
electrical signals.
6. A system according to claim 1, including:
means for recording siad electrical signals;
means for adjustably modifying selected characteristics of recorded
signals with respect to previously recorded signals; and
means for accumulating said signals within at least one television
frame-time sequence.
7. An image producing system, comprising
an optical device, such as a prism, having a totally reflective
surface with an internal side and an exposed outer side;
means for contacting the exposed outer side of said totally
reflective surface for breaking the total reflectivity thereof at
every point of contact;
scanning and light detecting means for illuminating and scanning
and light detecting means for illuminating and scanning the
internal side of said reflective surface and producing electrical
output signals in response to diminution of reflected light in
accordance with a pattern on said reflective surface during each
complete scan of said surface;
means for producing an energy beam and causing it to scan in
synchronism with the scanning of the reflective surface; and
output means responsive to said electrical signals for causing said
energy beam to produce an image of each contacted point of said
reflective surface.
8. A system according to claim 7, wherein said means for producing
an energy beam includes a microscope wherein said scanning beam
physically changes points within the microscopic area.
9. A system according to claim 7, wherein said last mentioned means
includes apparatus for producing a color television image.
10. A system according to claim 7;
means to generate a plurality of television signals which represent
specific images;
means responsive to said electical signals that synchronize said
television signals;
means to introduce said television signals into said output means
at points corresponding to said contact points.
11. In a real-time television drawing system comprising;
means to cause a narrow beam of light to scan over a given area in
synchronism with television timing signals;
an optical device having a totally reflective surface;
means to focus said given area of scanned light on one side of said
surface;
means for generating a plurality of voltages capable of changing
said scan in toto according to various patterns;
means for superimposing said voltages selectively on said scanning
means;
means to contact a plurality of points on one side of said
surface;
means to produce electrical signals in response to said contact
points;
means including a display system synchronized to said television
timing signals responsive to the electrical signals for producing
at points corresponding to said contacts the pattern selected
during the time of each contact.
Description
BACKGROUND
Ever since television was invented artists and designers have been
trying to discover exactly what qualities are unique to it as an
artistic medium. Recent experimentalists have begun to create
images directly in the video medium by electronic circuit
manipulation. My invention is a first step toward channelling video
image manipulation, allowing a person the necessary freedom of
control to keep the human imagination in a free interaction with
the medium as unrestrained as possible. It eliminates the need for
special styluses or probes, and allows an artist or designer to use
the most subtle of his tools directly: the paint brush or a fine
steel penpoint. Thus a person can draw or paint directly into the
medium of color television in full color without the use of
pigments, dyes or inks.
The invention operates when a person places any type of a drawing
or painting instrument on a special paintscreen. Marks appear on
the color television monitor at points or areas corresponding to
the shape of the drawing object tip. One by one, as they are
introduced by hand, these marks are made any desired color by
controls. The marks can remain where they are placed for a short or
a long time, or they can be made to disappear electronically. Color
mixing between successively placed forms is either additive or
subtractive, or the new color can dominate the old, accomplished
electronically and under control of the person's free hand.
Further, the invention enables a person to exert a wide range of
automatic visual controls to synthesize images from those actually
drawn. For example, by switching on a circuit when a key is pressed
it is possible to cause instant size changes in all images drawn
in. Other systems allow a person to create the letters of the
alphabet, so that he can set them down into the television screen,
in any desired color, and move them about at will until he has
composed his image.
The versatility of this new medium will obviously make it an
important artistic medium for commercial or fine art applications.
The results of using this invention can be experienced by looking
at the color television monitor at the same moment images are made,
or they can be broadcast live over a television station. The
pictures can also be recorded on video tape or moving picture film
for later viewing. The painting can also be a collaborative effort
in which two or more of the instruments are connected together
electronically. My invention is in fact a device that turns the
visual arts into performing arts so that duets or trios, or even
orchestras of visual productions, are possible.
It is clear that my invention has four main areas of application.
First, as mentioned above, it is an extremely useful tool for art
studios or creative artists, for making pictures for advertising or
other printed media, or making animated motion pictures. When used
for film animation, background scenes or previously drawn pictures
can be applied from conventional television inputs, appearing under
the drawn images on the output monitor.
Secondly, the invention serves as a new computer input device,
having certain abilities to pre-process forms so that less analysis
will be required by the computer, simplifying the problems of
pattern recognition and assimilation by the computer.
Third, the invention leads to a simple way for mathematicians to
visualize and experiment with electronic symbols, or symbols that
immediately manifest mathematical properties such as visual
transformations, as for example in transformations that occur when
passing from the real to the complex number plane.
Fourth, the output of the invention can be used to control a
scanning laser or microscope system employing scanning electrons,
for the purposes of etching or burning, allowing a person to
perform delicate manual burning or scoring over areas, even down to
microscopic dimensions.
Other objects will become obvious as the details of my invention
are described. For example, the images can be created by means of
musical notes, filtered from an audio circuit and made to activate
the manipulating circuits automatically. Various types of image
synthesis can also be achieved by differing circuit arrangements,
using various types of feedback, for example. Depth can be
simulated by causing successively memorized images to be of
differing sizes. Depth can also be created by doubling the
circuits, providing a means to draw in a volume, and providing dual
monitors with appropriate optical systems that allow the right and
left eyes to differentiate the images created.
The resolution or detail of all images created in the invention can
be made as sharp as desired since it is a closed-circuit color
television system. If it is desired to convert the output into
standard interlaced 525-line images, they can be derived from a
scan converter connected to the output system, or by imaging the
visual output directly with a studio television camera.
These are only some of the ideas and applications of my invention
that come to mind, but the spirit of my idea as related in detail
here naturally include many more.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objectives will be apparent from the following detailed
description of a preferred embodiment of my invention, taken in
conjunction with the accompanying drawings. In the drawings:
FIG. 1 shows the optical system whereby hand-placed marks on a
prism cause an interruption of a flying-spot scanner raster image
and create a "paintpulse" gating signal.
FIG. 2 shows a block diagram of a system for utilizing the
paintpulse gating signal to introduce and retain any arbitrary
color on the screen of a closed-circuit color television
system.
FIG. 3 indicates the system whereby movements or distortions can be
introduced into the raster to affect the final image.
FIG. 4 shows the details of a key on a piano-type keyboard used to
activate and control manipulative image changes through a
potentiometer and microswitch arrangement.
DESCRIPTION OF ONE EMBODIMENT
Painting or Drawing in Color Television
There are many ways to convert a manual movement into an electronic
signal suitable for use with a television system to uniquely
establish points over the picture area. Most conventional systems
use a special probe that a person places onto a television screen,
either a probe that detects a position signal from the television
raster light itself, as in U.S. Pat. No. 3,271,515 by T. P. Harper,
or a probe that causes a position signal to be generated from an
overlay or a deformable surface placed over the television screen,
as in U.S. Pat. No. 2,227,083 by E. Hendrick. In general a probe
has two major disadvantages: it has an inflexible point without
variety, and it defines only single points at a time. This limits
its usefulness as a source of manual graphic inputs for visual
ideas of the complexity required for art productions.
My system, however, enables an artist to use conventional brushes
or pens for painting or drawing into color television signals. He
can also use his fingers, any type of rubber or plastic form or
design, like a rubber stamp, or any stylus whatsoever, which he
touches to a special draw or paintscreen, that is one surface of a
polished glass or plastic prism or the like. A single stylus can
produce a wide variety of line qualities, as for example when its
tip is flat so that it can be turned by hand as it is moved, like a
flat pen point turned to draw both thick and thin lines. Or if a
brush is used, it can cause a very tiny dot or line when only the
tip is engaged, or a very broad line when it is pressed down. In
addition, every point touched on the draw or paintscreen is
introduced, so that multiple tipped styluses can introduce large
shapes, or rubber stamp-like shapes can introduce symbols or
letters, instantly positioned by hand anywhere on the paintscreen
and therefore on the output area.
FIG. 1 shows the optical system for causing hand-introduced marks
to generate a paintpulse gating signal. The raster 1 of a
flying-spot cathode ray tube (CRT) 2, whose sweep is derived from a
standard set of vertical and horizontal deflection generators of
any line definition desired, is focussed by means of lens 3 through
wedge 4 onto the internal totally-reflective undersurface of prism
5. The principal focus of the lens is indicated in the figure by
the dashed lines ab to cd, of which only the side portion ae is
used. The wedge 4 compensates for the prism refraction in order to
bring the entire raster 1 into sharp focus and undistorted at the
internal totally reflective surface of prism 5. Normally the entire
light from raster 1 is reflected through the prism 5 to condensing
lense 6, which gathers all the light and passes it to photo
multiplier 7. When some object, like a hand-held brush or stylus 8,
touches the top surface outside the totally reflective surface,
called here the "paintscreen," it causes light at that point to be
trapped and not reflected out. For this moment, corresponding to
point A of line L in raster 1, there is no, or less signal detected
by photo multiplier 7. The signal 9 will appear to dip down from
white to black, corresponding to this point, as shown for that
line, or for as many points in the lines that the brush or stylus 8
interrupts the raster 1 light. The pulse generated by an arbitrary
point A is called the "paintpulse." The prism 5 obviously must be
highly polished. A slight amount of optically pure oil on the brush
or stylus will aid this effect, but there is sufficient natural
oils on brushes that this is unnecessary unless a person is trying
to achieve unusual painting effects, in which case he might want to
charge a brush highly with water or oil and let it flow over the
prism pointscreen as in water-color painting.
FIG. 2 is a block diagram showing how the paintpulse causes any
desired color to be generated on the output screen of a color
television system. The paintpulse is first amplified in video amp
10, and clipped in the clipper. Clipping is not necessary of course
if the paintpulse is of the correct amplitude to drive the gates,
as determined by the video amp. 10. Clipper 11 is a voltage-limited
diode circuit. The paintpulse serves then as a gating signal to
activate three gates 12, 13 and 14. They are each pentode-type
keying gates, biased so that when a paintpulse signal is sent to
their screen grids they will pass all signals applied to their
control grids respectively. The control grids each receive signals
from the color generator 15. Color generator 15 produces voltages
corresponding to red, green and blue color television signals as
they would be required for application directly to the control
grids of a color television tri-beam CRT. Since the system is
closed circuit, these signals can be dc. The signals necessary to
cause white to appear on a color CRT. for example, must have the
correct proportionality so that the color phosphors generate the
necessary light components that add up to white, namely, equal
voltages on each grid. When the three outputs from the color
generator 15 maintain this relationship they will produce from
black through the grays to white, depending upon their voltage
amplitudes. Now if one or the other color signal voltage
predominates, that color will predominate in the CRT output; and
various combinations of the signals will produce all the colors in
the rainbow, at all intensities and saturations, as is well known
in the art. The color generator 15 generates these various voltages
from a potentiometer-controlled resistive matrixing circuit which
generates the R, G and B (Red, Green and Blue) signal voltages
under controls 17. This matrix is arranged so that a single control
element can be used to introduce the necessary voltage combinations
to result in any desired color hue in the output tube. This
embodiment of my invention does not require the generation and
control of the NTSC composite color television signal since it is
closed circuit. If it is desired to use this signal, color gen 15
is a colorizer or color encoder, and the remaining output circuits
are designed to operate from this signal, as in a standard color
television receiver. The color controls of color gen 15 can be hand
set; they can be attached to the piano-like keyboard described
below; or they can be mounted on the stylus or brush 8 so that a
person can control the color as he paints. The three gates for red
12, green 13 and blue 14 are triggered only when a paintpulse is
sent from clipper 11. When they are triggered, they pass the
various components of the color signals from color gen 15, set by
the controls 17, to three double-ended storage tubes 18, 19 and 20.
The signals at this pont are now video signals due to the
paintpulse gating actions through the gates, and they are stored by
means of the write portion of the storage tubes, deflected across
their internal storage surface by the horizontal and vertical
deflection portions of scan gen 21, synchronized to the raster 1 of
the original flying-spot scanner CRT 2. The various levels of the
color signals establish various levels of charge across the storage
surface of the storage tubes 18, 19 and 20. This storage is
necessary to preserve various signals as the person paints in
images across the paintscreen. The read sections of the storage
tubes, also deflected by scan gen 21, detects the various levels of
charge across the storage surface, and passes them from a collector
element to the color control grids of the color CRT 16. The sweep
circuits of the color CRT 16 are also controlled by the scan gen
21. synced to raster 1 through sync 22 in FIG. 3. Blanking signals
for the color CRT 16 are generated in 43, also in sync with raster
1.
Therefore, in sum, when a person sets a brush or stylus 8 on the
paintscreen of prism 5, he interrupts the raster light 1, causing a
lack of light at this point A, which is detected by the photo
multiplier 7, amplified in 10, and clipped in 11, and passed to
gate in the color signals set by controls 17 in color gen 15, and
passed to control the color grids of color CRT 16 through the
storage tubes 18, 19 and 20, becomming visible and cumulatively
disposed in the correct chosen color at the correct chosen spot
corresponding to the original mark position on the visible output
screen.
Other images can be introduced into the system through a
conventional video resistance network matrix which accepts and
combines various video inputs, without their influencing one
another. The other images may be background images or other
information to be combined with the newly painted inputs, or they
may be the input of another similar system controlled by another or
by more people. Finally, the images appearing on color CRT 16 can
be photographed, or viewed by the person making the color video
image. The tri-color output can be replaced by three
black-and-white CRTs each therefore giving the red, green and blue
images, that lend themselves to be photographed for creating the
separation images required for the standard three-color printing
process. The entire color output can also be replaced with a
scanning laser, scanning electron, iron, X-ray or other scanning
system, as described below.
Manipulative Potential
This system of point-by-point painting into color television lends
itself to the creation of many automatic alterations on the points
as they are introduced on the paint screen. My system inherently
provides two general manipulative potentials, first one caused by
altering, moving or distorting the original raster ground; and
second one caused when the gating system introduces information in
addition to the color signals, as for instance images derived and
generated by vidicon cameras trained on real images or designs.
Raster Ground Manipulation
Considering the first raster ground manipulation, it is clear that
the original raster 1 must be in exact focus on the prism 5 totally
reflective undersurface, which was the purpose of the correcting
wedge 4; that it must not be distorted; and that its shading must
be uniform; or otherwise the output signal will not be correct with
respect to the drawing or painting laid down on the paintsurface.
This fact can be exploited to cause variations. For example, size
variations in the raster 1 will be reflected as size changes in the
output. If the raster 1 is made very small with respect to the
paint surface of the prism, all movements of the brush or stylus
will be written large in the output since small hand movements will
encompass the small raster area very easily. And vice versa, if the
raster 1 is made to overscan the paint surface, and only a small
portion of it covers the paintscreen, all movements of the brush or
stylus will only intersect a small portion of the raster, and all
movements will appear as very small movements in the output since
only that portion of the raster scan under the paint surface will
be affected by the stylus or brush movements.
FIG. 3 shows how the various control elements of the vertical 23
and horizontal 24 deflection generators that generate raster 1 on
CRT 2, can be brought out and controlled by a piane-type keyboard
25. The purpose of this piano of typewriter-like control 25 is to
create a versatile and subtle means whereby a person can, with
skill and training, be able to synthesize a broad variety of
abstract or realistic designs or images everywhere that the
painting stylus or brush is placed. The effects of three controls
in the vertical circuits and three controls in the horizontal
circuits, or six keys on 25, are illustrated in this embodiment of
my invention. It is to be understood that the raster can also be
altered, distorted, moved or otherwise controlled by means of
anaspherical, anamorphic or other types of lenses or mirror
systems. The raster can also be computer controlled to create many
very complex variations in its geometry and image synthesizing
abilities. It can also be controlled by electronic circuits to
create symbols, simply by causing it to be moved about in toto by
signals that form these symbols and are applied to the centering
voltages of the CRT 2, under keyboard or other control.
Additionally, the raster can be variously blanked, defocussed or
othewise radically altered, as for example if it is turned into a
spiral sweep, and so on, all having predetermined effects on the
output image and the manner in which the system will break up or
distort any drawing or painting laid down by hand point-by-point,
but only so long as any particular image manipulating circuit is
turned on. The raster can also be distorted or wiggled or moved
electronically or optically with acoustical, mechanical-optical or
the like systems.
Before describing each of the manipulative functions in this
embodiment of my invention it must be understood that they are
activated and varied by means of individual keys on a piano
keyboard 25 or typewriter-like keyboard not shown. FIG. 4 shows the
keys, highlighting the detailed operation of one. The key 26 is
pivoted near its rear at 27. An extension of spring metal 28 is
engaged with microswitch 29 such that the slightest touch of a
finger of hand 30 onto the key will activate it and switch in the
appropriate circuit action. At the same time, movement of key 26
will slightly rotate cam 31, and cause it to turn potentiometer 32
by means of the gear surfaces on 31 and 33. Potentiometer 32 is the
control element in the same circuit switched on by microswitch 29.
Thus a person's touch will activate a circuit and finger pressure
will vary its magnitude, springing back off when the finger is
lifted. Symbolic representation of this system, its key,
microswitch and potentiometer, are shown at 34, 35 and 36
respectively. When no keys are activated, the system operates in
the normal, undistorted or unaltered raster position, as described
above.
Returning to FIG. 3, the vertical deflection generator, vert def
gen 23, is a sawtooth relaxation oscillator, and the horizontal
deflection generator, horiz def gen 24, is a flyback-type
oscillator, generating a current sawtooth in the deflection yoke of
CRT 2. The linearity, height or width, and centering resistive
controls of these two circuits are brought out as shown (numbers 37
through 42.) Each of these controls are shunted with six of the
variable potentiometer-switch key controls on keyboard 25. The
following effects are therefore introduced, and magnitude
controlled, as each key is depressed:
Vertical Linearity 37: affects length of small vertical lines,
altering the length as they appear in the output, as a function of
where they are drawn on the paintscreen along the vertical
axis.
Horizontal Linearity 40: same affect as above, only in the
horizontal direction.
Vertical Size 38: distorts the vertical size of all lines or shapes
drawn on the paintscreen, distorting them along the vertical
axis.
Horizontal Size 44: same affect as above, only in the horizontal
direction.
Vertical Centering 39: affects position of all points introduced,
changing where they will appear along the vertical axis of the
output screen.
Horizontal Centering 42: same effect as above, only in the
horizontal direction.
In general the system shown in FIG. 3 enables a person to play one
hand over the keyboard 25 and manipulate dot-by-dot, or
point-by-point, as he draws or paints with his free hand. While the
particular manipulations are limited, the potential exists for
introducing very comprehensive alterations in the points as they
are introduced. It is obvious that a systematic organization of
potential manipulations must be made, perhaps under the control of
a plug-board type switching system for various different types of
image-handling problems.
This system can also cause non-linear coordinate transformations
between differing geomemtries of sweep. If, for example, the raster
1 is shifted completely from a rectangular coordinate system to a
spiral sweep, and the output monitor maintains a conventional sweep
scan, very drastic alterations will occur in all the geometries
hand-drawn on the paintscreen, as viewed in the output monitor. In
a spiral scan system, the geometric relationships of the scans of
raster 1 and CRT 16 raster, must be such that they begin to scan
their respective areas from a given point, generating lines and
circles with a consistent relationship, and terminate in
synchronism at another given point. Both rasters must be initiated
in synchronism, and as the spiral raster is traced out, by a
deflection system conventional to the radar art, it must turn one
loop of its circle per line of the output raster, terminating at
the center when the rectangular raster terminates at its end. All
drawn images will therefore be transformed into a distorted,
circular image, immediately visible as it is drawn, In another
arrangement the invention can be used to manifest visually the
discontinuities that occur when complex variables are graphed. If,
for example, the paintscreen raster 1 is overlapped by reflecting
it off a broken mirror before it is focussed from 3 to the wedge 4,
introducing a discontinuity along a discrete line in the original
paintscreen area, when a person draws across this line domain as
reflected across the paint surface, the discontinuity will occur as
a jump in the output at the same line domain. Discontinuities can
also be introduced into the raster 1 by means of a computer,
automatically predistorting it according to any given complex
equation, such that any hand-drawn image geometry will be
visualized immediately on the output screen in the act of the
drawing. The invention therefore becomes a potential adjunct for a
mathematician desiring an instantaneous view of transformations of
given hand-drawn geometries or shapes transformed from one
coordinate system to another.
Paintpulse Gating Manipulation
In FIG. 2, the gates are turned on in time corresponding to points
within the raster 1 timing, according to where stylus or brush 8 is
positioned, generating the paintpulse. If the paintpulse is used to
activate signals coming from other sources, those signals will be
introduced into the output screen at these points. The desired
signals can be derived from a series of small vidicons, whose
sweeps are synchronized by the gating paintpulse, trained on a
series of specific symbols or images that a person might desire to
introduce into the visual output, each switched in by additional
keys on keyboard 25. Thus another large body of images can be
brought into play with the keyboard, placed down anywhere within
the visual output by means of the stylus or brush 8 touching the
paintscreen the moment that a particular key is depressed.
The above inputs provide another large group of image manipulations
which, in combination with the raster ground manipulation described
above, makes the invention a versatile device for graphic creation.
The multi-colored images created are all accumulated withint he
storage tubes 18, 19 and 20, unless overdrawn with another images,
or erased in total by turning off the storage tubes.
Music can be introduced by means of coupling a piano to the
switching system of keyboard 25, or the switches of keyboard 25 can
control the elements of a music synthesizer or electric organ.
Many variations are also possible, as for example if the original
video derived from the video amp 7 is used to influence the raster
1, for example by means of deflection modulating it slightly, or by
means of intensity modulating the beam of CRT 2. Thus all images
will be distorted according to where the brush or stylus is
located, much as if it were a magnet influencing the beam directly.
In addition, the image of a given scene or drawing can be derived
from a vidicon, applied to the grid of CRT 1, intensity modulating
this scene on the raster 1, and with the above feedback, this scene
or drawing will be distorted as the person places the brush or
stylus over corresponding points, and manipulates them too if
desired, all visible on the monitor output CRT 16, and preserved in
the storage tubes or not, as desired.
Another variation introduces paintpulses electronically,
eliminating the prism flying-spot painting capability, these pulses
being under control of keys on keyboard 25. In such a system single
pulses are generated at the raster 1 frame rate in multivibrator
circuits, delayed from each other so as not to introduce coincident
pulses, each turned on by keys of keyboard 25. When a person plays
the keyboard, and also plays circuits that activate manipulation,
he can cause images to come and go at various spots across the
screen, varied as desired according to the repertory of symbols or
images introduced by means of the small vidicons in the system
described above.
In another variation musical switching signals, derived from a
source of music whose frequencies are filtered and connected to
trigger switching voltages as a function of audio frequencies, as
in a standard multi-channel color organ, are used to turn on the 10
pulses generated above, in a predetermined order across the screen,
also switching in designed images from vidicons as described above,
according to a random or prearranged musical scheme. Musical audio
frequencies would therefore cause images to appear over the visual
area of the output screen as a function of the music itself,
creating designs and color variations over a color television
screen of a pleasing and interesting nature.
Another important variation of my invention replaces the television
output with a microscopic laser or electron scanning system for the
purpose of scoring, burning, etching or brasing or otherwise
influencing areas or objects down to microscopic dimensions. The
paintpulse in this etching system for microscopic dimensions is
generated by the means outlined above, but it also can be derived
from a system identical to that of the Harper invention mentioned
above, which is a video-drawing system; or as described in the
Hendrick patent, which is a telautographic system.
When the invention output is connected to a scanning electron
microscope capable of generating a beam that can etch, score or
burn microscope capable of generating a beam that can etch, score
or burn miscroscopic objects, similar for example to that described
by Braers and Hatzakis in "Microcircuits by Electron Beam," in the
November 1972 issue of Scientific American, the paintpulse output
from clipper 11 controls the beam by deflecting it on and off the
axis of the electron microscope column with electrostatic
deflection plates. The scanning rate of the microscope is synced to
the sync generator 22, and blanking is derived from the same
source. Normally a less intense electron beam is made to impinge on
the object by having only a portion of the beam in the column line
from a small dc level voltage, sufficient to provide enough
secondary electrons from the conventional pickup systems of
scanning electron microscopes to view the object. But when the
paintpulse is activated it allows the full force of the electron
beam to be aimed down the column to etch the object. This action
can be activated for as many frame scans as desired to achieve the
desired influence upon the microscopic point desired. Using this
system, or the laser microscopic system described below, it is
possible to alter or influence extremely microscopic dimensions for
the purpose of performing delicate manual controls, or making
alterations of objects even down to cellular or molecular levels,
all under manual control and only limited by the resolution of the
microscopic system used. While the scanning electron system is
extremely delicate, a laser scanning system could do less
diminutive work. In the laser beam output imaging system the laser
beam is deflected across a large surface, or through a microscope,
to a small area, by means of electrooptical or acoustical-optical
deflectors and rotating mirrors, conventional to the laser art. See
for example U.S. Pat. No. 3,488,102 by Buck et al., or U.S. Pat.
No. 3,492,596 by Vorie, plus their cited references. Normally, in
this application, the laser beam is blocked by a modulating cell to
which the video signal containing the potential paintpulses from
clipper 11 are applied. The modulator is a Pockels Cell, Kerr Cell
or the like, also conventional to the laser art, that is capable of
responding to pulse signal inputs. The surface or microscopic
object to be influenced by this laser beam is also televised by
conventional techniques for observation purposes. When a person
places the hand-held stylus on the paint surface, it sends a signal
through the amplifier and clipper 11 to operate the modulator,
momentarily allowing the laser beam to send its full force against
the hand-chosen point on the object or surface to be etched or
burned.
While these systems and various methods for drawing point-by-point,
and painting into color television, and manipulating the points and
images created, and introduce various other types of designed
images into a color output, or down to a microscopic dimension for
purposes of etching or burning, represent a complete operational
system, it should be apparent to anyone familiar with the art that
the various elements and steps may be changed or altered, or
completely supplanted by the use or substitution of other elements
or arrangements of the components without departing from the spirit
and scope of my invention. Accordingly, my invention should be
considered to include any or all such modifications, variations and
alternative forms that fall within the scope of the appended
claims.
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