JPS583430B2 - gazoshingogouseisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image signal synthesis device that generates one television signal by synthesizing two pieces of information: a fixed form consisting of a kanji title, a ruler line, etc., and character information.

It is often necessary to combine separate signal sources into a single television signal.

For example, character signals generated from a character signal generator (name, address, product name, office name, quantity, amount, etc.) and a form (fixed information, such as a slip or ledger) recorded in advance on photographic film, etc. (such as ) to create a complete stylistic expression.

Conventionally, in order to optically synthesize this information, a transparent window is opened at the back of the cathode ray tube, and the recording on the film is projected onto the face plate of the cathode ray tube, and the recording on the film is combined with the display screen of the cathode ray tube and on the face plate. There were devices that combined the plasma display image with the film recording by projecting the film recording from behind the plasma display panel.

However, these devices use special cathode ray tubes and display devices, making them expensive.

It is also possible to take a picture of a film or the like with a television camera and electrically synthesize the television signal and the video signal from the character generator into one television signal.

However, since inputs from two signal sources are combined, adjustment of mutual voltage levels becomes complicated, and since the same synchronization signal source is required, synchronization becomes complicated.

It is also possible to generate fixed forms containing titles, kanji, etc. from a character generator, but if kanji patterns with various fonts are constructed using memory such as an integrated circuit, the memory capacity will be large and it will be very expensive. There were drawbacks.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image signal synthesis device that is inexpensive and has a simple configuration, solving the drawbacks of the prior art.

The present invention reverses the polarity of a character signal and displays it on a cathode ray tube, and combines the character information (fluctuation information) on the cathode ray tube with the fixed form (fixed information) recorded on film, paper, etc.
This is an image signal synthesis device that optically synthesizes and performs photoelectric conversion to process video signals.

That is, the present invention provides a character signal generator that sequentially generates character information in the form of a video signal, a polarity inversion circuit that inverts the polarity of the video signal, and a flying spot scanner to which the output video signal of the polarity inversion circuit is applied. a film on which information in a fixed form is optically recorded; an optical system for projecting character information displayed on the face plate of the flying spot scanner onto the film in a predetermined positional relationship; It consists of a photoelectric converter that receives the light transmitted or reflected from the film, and a video signal processing circuit that processes the video signal from the photoelectric converter, and the input of the video signal processing circuit consists of the character information and the fixed form. This is an image signal synthesis device characterized by obtaining a television signal including information synthesized with other information.

Here, the term "film" refers not only to those having transmission images, but also includes reflection images such as printed matter and photographs.

According to the present invention, it is possible to realize an image signal synthesis device with a simple configuration.

Further, according to the present invention, an inexpensive image signal synthesis device can be realized.

Hereinafter, the present invention will be explained in detail by way of examples with reference to the drawings.

In FIG. 1, a video signal (
(characters as fluctuation information) is input to the flying spot scanner 30 via the polarity reversing circuit 2, and is applied to the cathode of the cathode ray tube 3 in the flying spot scanner 30.

At this time, the face plate 20 of the cathode ray tube 3 has a second
As shown in Figure a, character information is displayed.

A portion 21 on the faceplate 20 is a brightly lit portion, and a portion 22 is a dark, non-fluorescent text.

It is assumed that the cathode ray tube is composed of scanning lines like a normal television.

Further, it is desirable that the phosphor of the cathode ray tube has a low afterglow, and in this embodiment, the bright spot on the face plate 20 of the cathode ray tube 3 using a PL6 phosphor is
A lens 4 in the center focuses the light onto a film 5 on which fixed information is recorded in advance.

As shown in the enlarged view in FIG. 2b, the character 22 (T in the figure) is composed of 7×9 dots, and the characters on the upper, lower, left, and right sides are spaced by 3 dots each.

In other words, the space for one character is 10×12 dots.

On the other hand, the information on the film 5 consists of an opaque area (fixed information) 10 consisting of Chinese characters etc. and a transparent area 11, as shown in FIG. are recorded to correspond to

For example, if it is desired to match the size arrangement of each character of the variable information and fixed information, the characters of the fixed information 10 may also be recorded side by side in a horizontal to vertical ratio of 10:120.

The film 5 is held by a mount (not shown), which is positioned so that the letters 22 on the faceplate 20 are projected onto the film 5.

The light transmitted through the film 5 is condensed by a condenser lens 6, and converted by a photoelectric converter 7 into an electric signal, that is, a video signal.

That is, an image of the face plate 20 displaying a bright portion 21 and a dark portion (characters) 22 as shown in FIG. 2a is projected onto a film carrying fixed information as shown in FIG. When the image of 5 is projected onto the photoelectric converter 7, the video signal obtained from the photoelectric converter 7 is a signal obtained by combining the information from the character signal generator and the information on the film as shown in FIG. be.

When the video signal is inverted and amplified and inputted to the monitor 9 via the video processing circuit 8 which adds a synchronizing pulse, information obtained by combining the two pieces of information is displayed as shown in FIG.

The video signal from the polarity inversion circuit 2 passes through a sync separation amplification circuit 12, applies sawtooth current to the horizontal and vertical deflection coils 13 of the cathode ray tube 3, and inputs a sync pulse to the video processing circuit 8.

Note that in this device, the polarity inversion circuit 2 is used to invert the image, but this is because it is desired to utilize as much of the illuminated portion of the cathode ray tube.

In the above embodiment, a cathode ray tube was used as the flying spot scanner 30, but other methods may be used as long as the device modulates the light spot with an electrical signal and deflects it.

For example, as shown in FIG. 5, the laser beam from the laser light source 50 is converted into a polarity reversing circuit 2 by an electric signal from a character signal generator 1 serving as a first image signal generator.
After that, the light modulator 51 modulates the brightness.

This modulator may be a modulator using ultrasonic waves or a modulator using a single crystal electro-optic effect.

The brightness-modulated light is two-dimensionally deflected by an optical deflector 52 that is controlled by an electrical signal from the character signal generator 1 that has passed through a synchronous separation amplifier 12.

This deflector 52 is horizontally deflected at high speed by a rotating mirror,
It is also possible to perform vertical deflection using a galvanometer mirror, or both horizontal and vertical deflection using an acousto-optic deflector.

It is also possible to perform high-speed horizontal deflection using an acousto-optic deflector and vertical deflection using a galvanometer mirror.

The laser beam thus two-dimensionally deflected scans the film 5.

The transmitted light of the film 5 passes through a photoelectric converter 7 and a video processing circuit 8 and is displayed on a monitor 9 in the same manner as in the previous embodiment.

Similar to a cathode ray tube, a television scanner using such a laser can also produce a composite television signal of text information and fixed form information.

In the above embodiments, the optical image (fixed form) to be scanned
Although we used film to detect transmitted light, it is also possible to synthesize image signals using reflective objects such as printed matter or photographs by changing the optical system.

As described above, this device synthesizes two image signals by scanning an optical image using a flying spot whose brightness is modulated by a character signal. Since the system scans, there is no need for synchronization, and since a composite signal of two pieces of information can be obtained at once, it is easy to process the image signal.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the device of the present invention, and FIG.
Fig. a, Fig. 2b, and Fig. 3 are plan views of a screen displayed on a cathode ray tube and an optically displayed screen showing the content of the present invention, and Fig. 4 is a plan view of a screen in which the two images are synthesized. , FIG. 5 is a block diagram showing another embodiment of the apparatus of the present invention. 1 Two-character signal generator, 3: Braun tube, 4: Lens, 5
: film carrying the second optical image, 7: photoelectric converter, 30: flying spot scanner.

Claims (1)

[Claims] 1. A character signal generator that sequentially generates character information in the form of a video signal, a polarity inversion circuit that inverts the polarity of the video signal, a flying spot scanner to which the output video signal of the polarity inversion circuit is applied, and a fixed a film on which information consisting of a form is optically recorded; an optical system that projects character information displayed on the face plate of the flying spot scanner onto the film in a predetermined positional relationship; and a film that transmits through the film. or a photoelectric converter that receives reflected light, and a video signal processing circuit that processes the video signal from the photoelectric converter, and the output of the video signal processing circuit includes the character information and the information in the fixed form. An image signal synthesis device characterized in that a television signal including synthesized information is obtained.