KR0138146B1 - Compact disc graphics system - Google Patents

Abstract

The present invention provides a device for driving a recording medium for driving a recording medium such as an image disc and a digital audio disc in which graphic information including a video signal and coded data is recorded in a subcode form, wherein a screen on which data is displayed is displayed. A CDG (Compact Disk Graphic) system capable of selecting a background (border area) color and having a function of displaying initial data of a lead-in area of the recording medium on a picture simultaneously with driving a driving medium. The compact disk graphics system has an improved function, which is convenient for users.

Description

Compact disc graphics system

1 is a block diagram of a conventional compact disc graphics system.

2 is a diagram showing a screen area and a border area on a screen;

3 is a view showing a method of storing color using a ROM according to the present invention.

Figure 4 shows how the color stored in the CLUT is selected by the address signal.

5 shows how the first and second CLUTs are selected.

6 is a view showing a mode selection method according to the present invention.

7 is a view showing a method for displaying initial data according to the present invention.

8 is a block diagram of a border area color changing circuit of the compact disc graphics system according to the present invention.

The present invention provides a driving apparatus of a recording medium for driving a recording medium such as an image disc and a digital audio disc, in which graphic information including a video signal and a coded signal is recorded in a subcode form, wherein the data is to be discarded. A compact disk graphic (CDG) capable of selecting a background (border area) color of the screen and displaying the initial data of the lead-in area of the recording medium on the screen simultaneously with driving of the driving medium. It's about the system.

The compact disc graphics system reads data of a sub-code channel (R-W) among data contained in a compact disc and displays an image on a TV or a monitor accordingly. At this time, the screen area of the compact disc graphic has two areas, one of which is a screen area in which various characters or pictures are displayed, and the other is a border area which is filled with a specific color.

In the compact disc graphics system, colors are stored and printed using CLUT (Color Look Up Table). CLUT is a table consisting of 16 colors. The 16 colors consist of 12 bits consisting of 4 bits each of 4 RGB data, and the 12-bit color signals are obtained from subcode data. The color signals are stored in registers and generated from control means. Is output by

An apparatus for performing conventional compact disc graphics (CDG) is shown in FIG.

Subcode interface means for receiving and deinterleaving subcode data input from the digital signal processor;

Error correction means for correcting an error of data input from said subcode interface circuit;

CDG control means for generating the image data by controlling the error-corrected data;

Memory means for storing data output from the CDG control means;

Memory interface means for inputting and outputting data output from said CDG control means to a memory means; And

And display control means for storing the color data outputted from the CDG control means and outputting RGB color data to the TV receiver in synchronization with the synchronous data of the TV by the data supplied from the memory means.

Referring to the operation according to the above configuration, first, the data interface means 12 receives and deinterleaves the subcode data supplied from the digital signal processor 11, and the subcode data is error correction means 13 for correcting the error of the data. ), The error is corrected.

The error-corrected subcode data is input to the CDG control means 14 and input to the memory means 15 for storing data by the memory interface means 15, and the color data supplied from the CDG control means is displayed for display control. Inputted and stored in the means 16, the display control means outputs the RGB color data to the TV receiver in synchronization with the synchronous data of the TV by the data supplied from the memory means to display an image.

Since the display of the CDG image data by the above method displays the screen by decoding the data read on the compact disc, the color of the border area cannot be arbitrarily changed by the user, and the initial data is processed and not displayed in the CDG processor.

Accordingly, an object of the present invention is to enable a user to select a color of a border area designated by information read out from the CD.

Still another object of the present invention is to provide convenience for a user by displaying initial data read out from the CD on a screen.

In order to achieve the above object, the present invention provides a compact disc graphics system.

Key input means for outputting corresponding data to the microcomputer means in response to a user's key input;

Microcomputer means for shortening the signal supplied from the key input means to generate corresponding data and control signals;

First interface means which is enabled by a mode control signal output from the microcomputer means and inputs data supplied from the microcomputer means and outputs the data to the second interface means;

CDG control means for controlling the error-corrected data to generate image data;

Memory means for storing data output from said CDG control means and a first interface means;

Second interface means for inputting and outputting the data to and from the memory means; And

And display control means for storing the color data and outputting the color data and the initial data to the TV receiver in synchronization with the synchronization signal of the TV by the data supplied from the memory means.

The compact disc graphics system of the present invention according to the above configuration will be described in more detail with reference to FIGS.

2 is a diagram illustrating a relationship between a screen region display signal and a screen region.

The screen area display signal is a signal for controlling the display of the screen area 21 and the border area 22. The screen area display signal includes a vertical display signal 23 and a horizontal display signal 24 as shown in the drawing. That is, the signal becomes high only in the screen area during the screen scanning period. In other words, the section in which the screen area display signal is low is the period during which the border area 22 is displayed, and the section in which the screen area display signal is high is the period during which the screen area 23 is displayed.

3 shows a method of storing colors using a ROM in order to allow a user to select colors according to the present invention, which sets 16 color data consisting of 12 bits of 4 bits each of RGB and inputs them into the ROM. The selected color is output using the 4-bit address signal.

4 shows a method in which the color by the color data of the CDG video signal stored in the CLUT is selected by the address signal. The address data in which 16 color data stored in 4 bits each of 12 bits are stored in the multiplexer is input to the multiplexer. The color is selected by the output.

5 shows how the first and second CLUTs are selected. The first CLUT 51 is composed of registers for storing color signals obtained from subcode data and outputting them by signals generated from control means. According to the present invention, when the first CLUT is selected in the normal mode by the multiflux 53 and the color is selected by the user, the second CLUT 52 configured as a ROM for storing a color for allowing a user to select a color is a mode signal. The signal selected from the colors stored in the second CLUT is outputted.

6 shows a mode selection method according to the present invention, in which a mode is selected, comprising a step 61 of initializing when a start signal is generated, a step 62 of selecting a mode, and steps 63 and 64 of executing a mode.

7 shows a method of displaying initial data according to the present invention, in which the data of the lead-in area of the CD is read 71 by the start signal and the mode conversion step of converting the mode after the read operation to the initial data display mode. And (72) controlling and displaying the read data on the screen (73) and converting the data into the CDG mode by the user's key input (74). .

8 is a block diagram of the border area color changing circuit of the CDG according to the present invention. In detail, the sub code data corrected by the error correction means in the normal mode is stored in the CDG control means 84. The color data inputted to the memory means 87 for storing data by the second interface means 85 and supplied from the CDG control means is inputted to the display control means 86 for storage and the display control means The data supplied from the memory means outputs the RGB color data in the first CLUT to the TV receiver in synchronization with the synchronization signal of the TV to display an image.

At this time, if the color of the board area is selected as the key input means 81 by the user, a signal corresponding thereto is input to the micom means 82 in response to the user's color selection, and the micom means is supplied from the key input means. The address and data signals are output in accordance with the address signal and the mode signal. In addition, the microcomputer means reads out the initial data of the lead-in area of the CDG data during the initial operation of the apparatus, converts the mode to the application mode, and outputs the converted data. The output data is input to the first interface means 83, and the first interface means is enabled by the mode signal supplied from the microcomputer means, inputs the data supplied from the microcomputer means, and the second interface means 85. ) The output data is stored in the memory means 87 by the second interface means for inputting / outputting data into the memory means, and the initial data is output through the display control means, and the data for selecting the color is selected in the second CLUT. Select and print.

As described above, the present invention improves the function of the compact disc graphics system as a circuit for changing the color of the border area and displays the initial data in the compact disc graphics system, thereby providing convenience to the user.

Claims (5)

Key input means for outputting corresponding data to the microcomputer means in response to a user's key input; Microcomputer means for shortening the signal supplied from the key input means to generate corresponding data and control signals; First interface means which is enabled by a mode control signal output from the microcomputer means and inputs data supplied from the microcomputer means and outputs the data to the second interface means; CDG control means for controlling the error-corrected data to generate image data; Memory means for storing data output from said CDG control means and a first interface means; Second interface means for inputting and outputting the data to and from the memory means; And And display control means for storing the color data and outputting the color data and the initial data to the TV receiver in synchronization with a synchronization signal of the TV by data supplied from the memory means. 2. The apparatus of claim 1, wherein the key input means comprises a color selection means for outputting a signal for selecting the color in response to the user's color selection and a selection means for outputting a signal for displaying and deleting the user's initial data. Compact disc graphics system, characterized in that. 2. The apparatus of claim 1, wherein the microcomputer means includes means for selecting and executing a mode by a key input for selecting a color and means for converting a mode and controlling data to be displayed and deleted on a screen by a key input for controlling initial data. And a compact disc graphics system. The compact disc graphics system according to claim 1, wherein the second interface means inputs and outputs the color selection data to the memory means and selects a color in the CLUT according to a mode signal. The display apparatus of claim 1, wherein the display control unit comprises a multiplexer for selectively outputting one of the first CLUT and the second CLUT according to a mode signal, and a multiplexer for selecting and outputting a color corresponding to a color selection address among colors of the second CLUT. Compact disc graphics system characterized in that.