JPS58150378A - Visible indicator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a visual display device, and more particularly to such a device for accurately superimposing a linear single-view image gIA# on a conventional moving television screen or scene.

In television broadcasts, it often happens that in addition to the visual aspect of the scene, it is often desirable to point out the characteristics of the visual aspect, or to emphasize the aspect of a particular part of the scene. If it were possible to add linear indications to television images in the same way that 5i-p is used to explain, emphasize, or point out something depicted, announcers , it would be very useful for speakers or commentators.If the claimed invention is implemented, anyone can easily do something similar to this for television images, and the applicant To our knowledge, there is no prior art comparable to the present invention.

Therefore, a first object of the present invention is to easily, conveniently and quickly transfer a figure 1, line, figure or image formed by linear elements between the transmission ends of a television broadcasting system onto an ordinary television picture. The object of the present invention is to provide a new visual display device that can be superimposed on a display device.

Another object of the present invention is to provide a new video presentation device using a non-storage type video camera that can be used for other conventional purposes when not operated with the device of the present invention. be.

A novel video display device in which a signal source is used and a scan converter or other storage device is used to store, scan and transmit the image to be superimposed on this base scene. The goal is to provide the following.

Another object of the invention is to enable the operator of the device to simultaneously observe the entire image of the scene that is being sent and the image that he is superimposing on it, so that a light beam directly onto the image of the scene can be viewed simultaneously. An object of the present invention is to provide a novel device for use in conjunction with a video screen, which allows users to experience the hallucination as if they are drawing a picture.

Yet another object of the invention is to provide a novel visual display device for use with video screens, in which previously recorded diagrams, data or pictures, etc., can be superimposed on the image on the screen being transmitted. There is a particular thing.

Other objects and features will become apparent to those skilled in the art upon reference to the following detailed description and drawings.

This will be explained below with reference to the drawings.

In the embodiment shown in FIGS. 1.2 and 3, two television cameras, designated by the numbers 11 and 12, are provided. For purposes of explanation, assume that camera 11 provides a scene input and camera 12 photographs the output of manual display generator 13. The electrical signal from the sight camera 11 is the lead 1111.
4 and the signal from the display camera 12 is collected via lead 15 to a commonly used video signal mixer 16. This mixed signal output from mixer 16 is then applied to transformer 1T, from which it is transmitted in the usual manner and thus received by signal receiver 18. This signal receiver is similar to a home television receiver, so the mixed image is visually displayed here.

The view sent by camera 211 may also be replaced by an image from a Videochi movie projector or similar device.

Instead of transmitting it directly, the signal from the ξkinner 16 can first be applied to a video tape recorder and stored therein for later transmission. Prerecorded audio magnetic tape may also be used in place of the manual display generator 13, as will be explained later.

All of the aforementioned components used in the device of the present invention are commercially available products.

The present invention includes a manual display generator 13 of either digital or analog type, which generates the X and Y coordinates of the probe or pointer under the control of the display operator. Bringing information about. In a preferred embodiment of the invention, the manual indicator generator is a conductive sheet that is transparent or translucent to light. However, this thin plate is as follows:
Various modifications of the basic scheme of the invention may be opaque to visible light, as contemplated in .

This sheet has a non-conductive frame 19 in which -
The central portion is housed within the frame and has electrical conductivity. This lamellar member 20 is in the form of a continuous electrically conductive resistive layer and can be made, for example, of tin oxide coated with electrically conductive glass, or may be an electrolyte. In some embodiments, this lamina may be determined or read using any number of methods known in the art, such as:
This may be a diode switching device or a needle attached to a pair of Ol tension meters by a rigid or elongated member. Furthermore, by using a pair of bare conductor grids and placing them insulated from each other and crossed,
The description of the present invention has included a combination of these various devices that can be used using digital positioning techniques in which probabilistic positions are identified.

A DC voltage is applied from above and below to the conductive thin plate 20, the DC generator 22, the leads 1i23, 24, and the inductor 25.
26 and is applied. At the same time, the alternator 2
1 and lead wires 28 and 29, and vice versa. It goes without saying that the AC and DC drives of this display generator are interchangeable.

Furthermore, a circuit or element exhibiting a high impedance to the frequency of the alternating current used may be used in place of the inductor. The AC and DC signals are mixed at connection point 32;
It is grounded at a point indicated by 33. On the other hand, the AC signal is superimposed on the DC signal, and the amplitude of the signal at any zero point on the plate 20 is proportional to the horizontal and vertical distance of the probe from the lower right corner of the plate.

Obviously, it is better to use direct current and alternating current than to
For the purpose of setting the and Y coordinates, much different alternating currents of two different frequencies could be used. Cutting material 30
, 31, 25 and 26 need only have a high impedance for one frequency and a load impedance for the other frequencies in order to simply perform their functions.

An essential part of the device of the present invention is the probe having a lead wire 35 extending therefrom, by which the probe is electrically connected to a storage section and a display section to be described later.

The probe 34 derives a composite signal from the manual display output generator 13, which signal contains information that defines the exact point of contact between the probe and the generator. That is, such a signal gives the X and Y coordinates of a point on the plane of the generator. This signal contains both an AC component that gives horizontal distance and a DC component that gives vertical distance. This signal is then split into its AC and DC components and the amplitudes of both are sent to a capacitive storage oscilloscope 36, for example. This oscilloscope may be of a conventional general type. The signal from lead 35 passes through a high pass filter and is sent via diode 43 to storage oscilloscope 36. This capacitor removes the DC signal as a P wave, rectifies the remaining AC signal, and supplies it to the oscilloscope as a horizontal input.

At the same time, the composite signal from the lead [35 enters a low pass filter 9 and passes through the oscilloscope to determine the vertical position of the scanning beam in response to the DC level obtained by the tip 34. This divided signal is displayed and maintained on the screen of the oscilloscope as only two points or lines of a series of signals. The screen of this oscilloscope is then photographed by the television camera 12. Camera 11 and 1
The outputs of the two are mixed for transmission as described above.

In the preferred embodiment of the invention, manual indicator generator 13 comprises a thin sheet of conductive glass with associated circuitry as previously described. In order for the operator to observe the underlying video scene and know exactly how it is affecting it, such a glass plate simultaneously displays the narrow range from the two cameras 11 and 12. Preferably it is placed on the 7 ace plate of a standard video receiver. This facilitates hand-eye collaboration for the operator and allows for more accurate positioning of objects added to the underlying image line. If for some reason it is not necessary for the operator to view the underlying video screen, for example when a pre-recorded diagram is provided for later use with the device, then this Opaque plates can be used instead of transparent or translucent plates. Obviously, the video receiver described above is not used in this case, but guide lines or other information can be projected onto this opaque plate by various known methods to assist the operator. Might be desirable.

Another method of using an opaque plate, which preserves the ability to accurately position hand-drawn diagrammatic information on the underlying video footage, is to use a standard 45° beam splitter or hand mirror. This method uses a device. A video screen placed after this translucent mirror will appear to the viewer to be optically superimposed on the opaque horizontal working surface of the plate.

Obviously, failure is employed in a movie screen-like manner.

In another embodiment, the plate used in conjunction with the probe is made of two transparent flexible signal plates or tape-like members sandwiched between two grounded transparent substrates. There is. This signal board or tape is separated by a small gap from the grounded transparent substrate. One signal plate provides the X-coordinate signal voltage, and the other signal plate provides the Y-coordinate signal voltage. When the probe is suppressed by the top O plate and the middle plate and the grounded substrate are forced into contact at the point where the probe hits,
The position of the probe is determined electronically as described above. That is, in this way the X and Y coordinates of the probe are established electronically. It should be noted that in this example the board is opaque and the image is displayed by projection as generally described above.

In another embodiment, a relatively large plate of such glass is suspended in front of the operator, as shown in FIG.
When the operator moves the probe over it, or uses a small fingertip probe, the viewer gets the impression that the operator is writing on the air space.

In still other embodiments of the invention, the superimposed signal input to the storage oscilloscope may be obtained from prerecorded audio frequency magnetic tape.

The output from the tape, with the appropriate voltages recorded to produce the desired image, is fed to a storage oscilloscope and then imaged onto camera 12. The horizontal and vertical positioning signals that control the oscilloscope beam are
with appropriate signals to provide "on-off" or two-axis modulation.
recorded as a function of time. In this way, three channels of information are required to pre-record a series of drawings or moving pictures. This does not mean that a three-channel tape recorder is required, but rather that differentially modulated audible carrier waves of the same frequency are recorded on a single track of an ordinary cheap tape recorder. This allows the operator to control the push button "calling" of images to be superimposed, which is most practical when superimposing images such as maps, graphs, or tables.

The superimposed image remains on the storage oscilloscope screen until erased by the operator.

Furthermore, instead of superimposing images using solid lines, if two-axis modulation of the oscilloscope input is added, broken lines can also be created.

It should also be noted that a relatively inexpensive vidicon camera can be used in place of camera 12 in the above-described apparatus. This is suitably locked with display member-3-6 for permanent use.

Yet another embodiment is shown in FIG.

In this system, a percentage display camera 12 and an electrostatic storage oscilloscope 36 (shown in FIG. 1) are scanned and sent directly to the transducer, where they are used to store the desired image in the form of an electrostatic charge. Ru. The video signal from this converter is passed through a video amplifier 52 to a mixer 16 where it is superimposed on the signal coming from the camera 11. The results are exactly the same as those described in connection with FIGS. 1 and 2.

This scan converter may be of any general type. - For example, the type H-1213 manufactured by Hughes Aircraft Company
There is a turtle that looks like this. Of course, something similar can be used.

5.6 and 7 show further embodiments of the components of the device according to the invention. For the viewer, the entire device is almost the same as that described above with reference to Figures 1 to 4, but the display generating plate-like member indicated by the number 61 is different from the # part of the electrostatic accumulation display tube described above. They have different structures. However, for the purposes of the device according to the invention they serve the same purpose.

Here, the display generating plate-like member is numbered 61, and a superimposed image is formed thereon.

In order to better understand the structure of the display generating plate-like member 61 of this embodiment, reference is made to FIG. 7, which shows a cross-sectional view thereof. First, the front casing 6 made of a glass plate 62 has an M shape.
3, a layer 64 of powder is continuously and removably adhered to the inner surface of said glass plate 62, e.g. needles 65.
By scraping off the powder, the powder layer can be selectively removed. This layer of powder is opaque and reflects visible light, allowing light to pass through the glass plate where it is removed. Although Hashiman's powder can be used as such powder, it is preferable to use Al-5 powder.

When the powder is selectively removed at the lath plate 62, the effect corresponds as if it were a line drawn on the 7 ace plate of the electrostatic accumulation display tube.

The movement of the needle 65 to selectively remove portions of the powder layer 64 is based on the X and Y coordinate signals from a magnetic tape recorder and magnetic tape, or the guidance of these signals from a "raw" video signal source. done below. ? - these signals are sent to the member 40, as in the previous embodiment, and then to the lead aS.
A pair of position servo motors 6 via S and 67 (Fig. 5)
8 and 6B (FIG. 6d) and which moves the needle in a given position, the part 23 in this embodiment functions exactly as described above.

Figure #I6 shows a specific example of the needle drive and position control mechanism used here.

The signal from the lead stitch 66 is sent to the X coordinate servo motor 68, and the signal from the lead stitch 67 is sent to the τ coordinate servo motor 6.
Sent to 9th. These motors are connected to the housing 63 in a manner similar to how the electron beam is controlled in the previous embodiments.
Control the movement of the needle within.

Figure 1#I6 shows one means for moving the needle 65 in response to waste and Y coordinate signals sent thereto. An X coordinate servo motor 68 operates the daily drive 41. This daily drive is a slide par 71 having a horizontally movable fixing pin 70 in a lower guide member 72 and an upper guide member 73. Servo motor 68 as shown in FIG.
Movement in the direction of the 0 o'clock hand is slide/''-71, so the hand is moved to the right 1111c, and vice versa, the hand is moved to the left.The hand 65 is movably attached to this slide par 71,・Able to move freely horizontally with Par 71.

The Y-coordinate servo motor 69 operates the #I2 pulley drive 74 to which the needle is attached, and the entire needle is mounted on the slide par 71. As this servo dial 69 rotates clockwise, the hands are moved downward. The reverse is also true, and the needle is moved upwards. This latter servo motor is attached to the slide par 11 and moves horizontally as it slides.

The overall result is that the needle position is controlled by manual X and Y coordinate signals to two servo motors.

The position of the needle O must also be controlled in the 30th dimension.6 When it is desired to draw a superimposed image, the needle tip should be in contact with the inner surface of the glass plate 62, and the powder layer should be will be removed. In order to avoid the undesirable characteristic of drawing a constant line as the needle moves along the X and Y axes, a solenoid member 75 (FIG. 7) is provided to extend and retract the needle on command. It is being In terms of effect, this corresponds to a brightness control device for an electrostatic storage display tube, and the control mechanism for reading from a magnetic tape recorder or a direct signal generator is the same. For example, signals on the magnetic tape may be sent to the lead strands 68& to energize a solenoid to force the needle against or away from the lath plate 62.

It goes without saying that various other means can be used to move the needle in the three directions.

The powder scraped off with the needle is stored in a box for several months to erase the lines drawn with the needle. Erasing is accomplished by simply vibrating the plate member 61 or redepositing the powder onto the glass plate 62 with an air jet.

Other methods may be used, such as Method 4, in which the powder is given an electrostatic charge so that it is attracted to the glass plate 62.

One method of erasing lines and regenerating a continuous layer of powder is shown in FIG. For convenience of explanation, the powder scraped off by the action of the needle plus the replenished powder is 64
Ideally, something like gas beads 76 should be mixed with the powder to prevent the powder from binding and maintain fluidity, as well as to make it easier to generate static charges, depending on the presence or absence of glass beads. Regardless, the scraped powder is deposited on the perforated plate 770 at the bottom of the display generating plate-like member 61. A porous 4&T8 is provided at the upper end of the plate member 61. Both the perforated plate and the stopper allow air to pass through, but not powder or beads. In addition, the perforated plate 77
At the bottom of 61 by positioning it as shown
179 is formed.

A simple pulse-energized bond 80 is connected by conduit 81 *79
connected to. fI? The cylinder has a case 82 and a piston B4 driven by a solenoid 83. Solenoid beam *661L, for example, from a tape recorder
It is controlled by a signal from the "erase" command line. If it is necessary to erase the line drawn by the needle +1, the air abduction pulse drives a solenoid that pushes the piston down rapidly, forcing air into chamber 79.
Infuse into.

Air is then blown into the main chamber to disperse the powder 64& and assist in regenerating a continuous powder layer 64. Air escapes through plug 711.

In many embodiments, the powder 64& has an electrostatic charge that causes it to settle on the inner surface of the glass plate 62. However, ideally, thin wires 85 are embedded in the glass plate in a grid pattern, and during the erasing operation, the wires are electrically charged to strengthen the force with which the powder is attracted to the glass plate. In some cases, this type of grid can be replaced by a conductive transparent flat plate, and a number of electrical wires charged with opposite polarities are suspended in a chamber containing powder to serve as electrodes.

From the user's perspective, such a mechanical plate 61 operates similarly to the storage tube or scanning converter described above, creating an image consistent with the movement of the probe 34.

In some cases, it may be desirable for the width of the needle scratch to be wider than the width of the needle tip. Thick lines are also desirable when using the electron beam to write on other types of storage elements, i.e. electrostatic storage display tubes or scanning converters; to achieve this purpose, the vertical and By adding an AO multiplied signal of an appropriate amplitude to the horizontal deflection signal, this human zero Nobushu spreads out over a small square area centered on the normal position of the needle determined by the voltage picked up by the probe 34. Similarly, using pre-recorded small circles, arrows, airplane shapes, etc., the tip can be placed in a stationary trench array by simply applying a constant voltage determined by the tip's position. The signal is prerecorded on an audio tape recorder and is activated when a symbol is desired. The recording method is the same as described above.

In the embodiments described above, some type of storage device, such as a storage oscilloscope, and an image transducer or scanning device, such as a television camera, are used.

An embodiment in which the basic form is further refined and the above-mentioned equipment can be replaced by other equipment as shown in FIG. 8 will be described below.

FIG. 8 shows the plate 20, the probe 34, and the plate,
An apparatus 101 is shown for isolating the X%Y coordinate voltages obtained by contacting the needle. Y coordinate signal is lead wire 10
2 to the Y comparator 103, and the X coordinate signal is sent to the X comparator 105 via the lead wire 104. Also provided is a disk-shaped or drum-shaped digital storage device 106 or delay line with a suitable storage capacity.

The output of the Y, Switch 110 closes and comparator 105's ! When the voltage is equal to the X signal voltage and the f voltage of comparator 10B is equal to the Y signal voltage, each element of the line created by the zero movement of the probe in contact with plate' is stored in memory [106]. When the switch 110 is turned to the erase side after the storage device is completely filled, all stored information is erased. On the other hand, when the switch is on the storage side, the storage device can receive signals from the player 20.

In the embodiments described above, whether there are two video cameras or one video camera and one scan converter 51,
The image is stored as an image prior to being converted to a scanned video signal. In the embodiment of FIG. 8, video scan conversion is performed as soon as each ** is produced and the converted video signal is stored. A series of cyclic signals representing an image.
g@5eri·s of signaxs) is stored in the storage device 106. It is assumed that the circulating signal entering the storage device via lead 121 is reshaped and tied to a storage "timing circuit" if desired.

The address output, ie, the pixel coordinate output, from the storage device 106 is provided via a lead line 111 to an ordinary D-person conversion 5112, and simultaneously via a lead line 113 to an X% synchronized decoder/113.

This decoder is synchronized with a television monitor or playback device so that the video signal is played back to picture on the full face plate.

The signal is supplied to x, y comparators 103 and 105 via 115. The output of the converter is the x', y' analog signal, which is compared with the x, y signal. That is, if at the same time x
-f, r-mf, comparators 103.105 cause AND gate 107 to issue a logic 1 signal, which is sent via lead 11109 to OR-) 10B. If a logic 1 signal arrives at the OR-) 108 via lead 118 at the same time as this logic 1 signal, this indicates that information is already stored at that point and no new information can be added. ing. If lead wire 109
When a 0 signal appears on lead 1111B simultaneously with a 1 signal from If it is in
The only signal that may appear on lead [121 in ANDr-) 120 is a logic 0 signal, or an erase signal. Conversely, when switch 110 is on the storage side, the output of AND gate 120 is on lead -118 or 109.
Either a logic 1 signal or a logic 0 signal (erasure).

In FIG. 8, the lead 1126 is the lead wire 118.
Although shown as emanating from the video screen, lead 126 can be branched from a line carrying a series of signals for overlaying the video onto the underlying video screen. This is problematic when the signal is taken from the camera 12t in FIG. 1 or the storage tube 51 in FIG. 4.

It goes without saying that various modifications may be made without departing from the spirit or scope of the novel idea of the invention.

[Brief explanation of the drawing]

Figure #11 is a schematic diagram of an embodiment of the visual display device of the present invention, Figure JII2 is a detailed diagram of an embodiment of the electrical input value for use with the device, and Figure 6 4 is a diagram illustrating another use of the apparatus of the present invention, and FIG. 4 shows a double-ended scanning converter used in place of a display video camera.
FIG. 8 is another example of the embodiment of the present invention. Agent Akira Asamura/First name

Claims (1)

[Claims] At least one source of a video signal forming a basic video signal to be sent; a video playback device for displaying the basic video; Display x-ym
in order to electronically define and confirm the target, - a manual probe device operated directly on said video signal playback device; and a manual probe device operated directly on said video signal source; a device for storing the X and Y coordinates of a position; and a device for converting the stored X and Y coordinates into a video signal in which a plurality of coordinate points are displayed in each video field. a video signal mixing device; and a device for connecting the mixing device to the video signal source and the converting device for superimposing a visible image onto a dynamic television image; .