JPS62239697A - Compact disk and external video hybrid system - Google Patents

Abstract

PURPOSE:To attain high stability and accuracy by using color information only so as to control hybrid operation. CONSTITUTION:In the hybrid device MR, a CD player P1, an LV player P2, VT player P3 are connected respectively to a CD terminal, BGV1 terminal and a BGV2 terminal and a monitor television TV is connected to a monitor output terminal. Then the sub code signal of a compact disk CD is mixed accu rately and stable to an external video terminal of the players P2, P3 and while the mixed picture is observed by the monitor TV and the sound of the compact disk CD is listened to by a speaker SP. Thus, through the free combination of the compact disk and external video tape recorder, the value of information is utilized sophiscatedly while the user is not tired with.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention utilizes subcodes in the audio code and subcode that constitute the signal pattern of a compact disc (CD) to develop and produce a CD exclusively for audio. and,
The present invention relates to a CD and external video hybrid system that freely combines videos (LV, VTR, etc.) that record images and performs hybrid playback of these.

[Conventional technology]

The compact disc (CD) was developed as a medium for recording and reusing audio such as music, and its signal pattern consisted of an audio code (16x2x6 bits) and a subcode (8 bits). Therefore, when recording an image on a CD and trying to play it back, 6 bits of the subcode are used.

6-bit computer graphics have a unique appeal, and there are high expectations for recording graphic signals in the subcode and reproducing computer graphics images and characters from CDs.

On the other hand, images recorded on VTRs, laser vision (LV), etc. have high quality. However, it is surprisingly easy to get bored with high-quality images that are constantly combined with sounds such as music if viewed frequently.

[Problem that the invention seeks to solve]

There is no system that allows you to simultaneously listen to a large amount of music, sound effects, etc. on CDs developed and produced exclusively for audio while viewing images on LV, VTR, etc. that reproduce high-quality images. CD and r, v
If you can freely mix the signals with LV, VTR, etc., you can freely mix high-quality images from external videos such as LV, VTR, etc. with your favorite music, sound effects, and CDs with computer graphics or text. By combining them, you can enjoy a variety of high-quality images.

[Means to solve the problem]

It reads the graphic signal of the compact disc (CD) and changes the screen display command signal such as paint for the entire display to black information. The CD external video hybrid system of the present invention, which is characterized by mixing the disc (CD) screen and an external video signal, is stable and accurate because the mixing operation is controlled only by the color information (RGB). expensive.

〔Example〕

Graphic data (serial data, bit clock,
The interleaving and scrambling processing of the word clock) is canceled through the encoder correction unit 1, and the signal is returned to a digital signal (hereinafter referred to as graphic data). The contents of the graphic data are read by the system control unit 2 and converted into signals with addresses that can be displayed on the screen. In addition to fonts, the graphic data includes display commands for the entire display screen (hereinafter referred to as screen display commands) using paint commands for coloring the display surface, border commands for painting frames, etc., so the code for the screen display commands is When read, this system control unit 2 converts it into black information.

The 6.times.12 bit font is stored as color information having an address in the RAM 4 of the storage section via the video control section 3 together with the black information. The above-mentioned mixed CD signal held in RAM4 is color information, and if the same pattern on the monitor screen is repeatedly displayed by the scroll counter and different color information is entered into RAM4,
The monitor screen also displays the different color information in the next screen cycle. If this color information is a font pattern and is a character, the character is displayed.

The video control section 3 has a high speed switch 3a. External video signals from a television camera, laser disk player, video tape recorder, etc. are input to the video terminal 5a of the hybrid section 5, while only the synchronization signal is added to this high-speed switch 3a via the synchronization separation section 6, A signal corresponding to this period is output from baud) 3b. Since the addressed signal is only color information, it is synthesized by the RGB synthesis section 7 and inputted to the hybrid section CD terminal 5b.

The output of the boat 3b is also input to the color information identification section 8 of the OR circuit, where the black information is read and the hybrid high-speed switch 9 is operated to output an external video signal from the video terminal 5a to the composite output terminal 10. When the color information identifying section 8 detects color information and obtains the above-mentioned hybrid CD signal, the above-mentioned hybrid high-speed switch 9 is operated to output the signal from the RGB combining section 7 to the hybrid output terminal 10. As a result, the text information provided by the color information is displayed floating above the external video image.

In reality, the color information corresponding to the text information is interjected and mixed into the external video image signal, but the external video image induced by the black information has no color change, and in this example, the background of the text string has high The quality of the image shines through. The CD audio code is amplified on another line and output from the speaker.

For example, when the "preset memory" of the graphic data specifies blue, the black information refers to the blue signal changed to a black signal, and the meaning of "black" is the external video image when mixed. This means that the RGB bits are not colored in different colors, and each bit of RGB is the rl of the lower bit.
This doesn't mean it has to be only J. Similarly, when "Brilliant Border" specifies a color other than black, that color is changed to black to obtain black information. In this case, it is not necessary that the RGB bits of the black information are only the lower order (as long as the black information is used, the external video image can be protected from being colored in a different color.

The hybrid device MR includes a CD player P, as shown in FIG.
, LV player Pg, and VT player P are connected to the CD terminal, BGV1 terminal, and BGV 2 terminal, respectively, and a monitor TV TV is connected to the monitor output terminal. , P3 external video accurately and stably, and while viewing the mixed image on the monitor TV, you can listen to the audio from the compact disc (CD) on the speaker SP.

〔Effect of the invention〕

The present invention changes the color information given together with the screen display command signal to black information, and
Based on the GBO color signal, it is possible to mix the CD graphic screen and external video signal, so you can mix the high quality image of the external video and the selected compact disc's graphic screen to freely combine them. At the same time, the user can listen to the audio of the compact disc, and by freely combining the compact disc and external video, the user can make full use of the information value without getting bored.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the system of the present invention, and FIG. 2 is an explanatory diagram showing an example of the configuration of the system. MR: Hybrid device 1: Encoder correction unit 2 System control unit 3: Video control unit 4: RAM 5: Hybrid unit 6: Synchronization separation unit 7: RGB synthesis unit 8: Color information identification unit 9: Hybrid high-speed switch Applicant: Japan Marantz Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] 1. Reads the graphic signal of the compact disc (CD) and changes the screen display command signal for painting the entire display surface to black information according to the color information of the compact disc (CD) passed through the system control unit. A CD and external video hybrid system characterized by mixing a CD screen and an external video signal.