KR930000215B1 - Multi-memory apparatus and method of ldp - Google Patents

Abstract

In the method executing a memory function of optical disc player such as a digital audio tape recorder (DAT), a compact disc (CD) and a laser disc (LD), when the disc is reproduced, the process firstly discriminates whether the disc memorizes comparison of the total music numbers with the total time after reading the table of content (TOC). The disc is reproduced by memorized program until the program is ended in the case of memorized disc. In the case of unmemorized disc, the wanted track is memorized according to the key input after recording the total music number and the total time among the TOC. This method is useful for improving the reliability and the function of a products.

Description

Multi Memory Control Method of Optical Disc Player

1 is a block diagram according to the present invention.

2 is a flow chart in accordance with the present invention.

3 is a memory table diagram of an embodiment according to the present invention.

* Explanation of symbols for main parts of the drawings

10 power supply 20 microprocessor

30: CD player 40: ROM

50: ram SW1: switch

D1: Diode C1: Capacitor

The present invention relates to a multi-memory control method of an optical disc player such as a digital audio tape recorder (DAT), a compact disc (CD), a compact disc video (CDV), a laser disc (LD), and the like. The present invention relates to a multi-memory control method in which a memory is refreshed once so that it can be used continuously without being erased regularly.

In general, in a system using an optical disk, the memory function is erased by replacing the disk, and the memory has to be reloaded every time the disk is replaced. In the conventional optical disc player operation, the power is turned on to play the memory. If you stop after playing the memory, all of the memory contents are cleared. Therefore, when power off or stop, all the memory is cleared, there is a problem that must be re-memorized every time the disk is replaced.

Accordingly, an object of the present invention is to provide a multi-memory control method of controlling a memory so that it can be used continuously without being erased for a long time when a memory is exchanged or refreshed once in a multi-memory system such as an optical disc player.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a block diagram according to the present invention, which controls a power supply 10 for supplying power, a power switch SW (SW1) for turning on / off power supplied from the power supply 10, and a system. A microprocessor 20, a CD player 30 that receives power from the power switch SW1 and plays an optical disc under control of the microprocessor 20, and is connected to the microprocessor 20. ROM 40 for storing program data, RAM 50 for storing data connected to and stored in the microprocessor 20, and data stored in the RAM 50 for a long time when a disk is exchanged or powered off. Is constituted by a backup means consisting of a diode D1 and a capacitor C1 so as to supply power so as not to be deleted.

2 is a flow chart according to the present invention. When a disc is inserted and a play button is pressed, the microprocessor 20 reads the TOC and compares the total number of music, minutes, seconds, and frames to the total number of music. And a second process of playing by the program if the disk is memorized in the first process and repeating when the end of the program is performed. If it is not the disk memorized in the first step, it is determined whether to play the memory of track number 1, and if it is not memory, it is determined whether it is a stop. In case of memory in the third process and the third process, the total number of grains in TOC and the minutes, seconds, When the memory is played up to the first frame, the memory device performs a second process when it is determined whether to play the memory after playing the desired track according to a key input.

3 is a memory table of an embodiment according to the present invention. Based on the above configuration, the present invention will be described in detail with reference to FIGS.

First, the total number of songs, minutes, seconds, and frames of the total time are stored in the memory and used for disc recognition. When the disk is replaced or the switch SW1 connected to the power supply 10 is turned off, the stored data is compared to determine whether the disk is once stored. If it is the memorized disk, it plays as the first memory, and if it is a new disk, it stores the total number of songs of the new disk, minutes, seconds, and frames of the total time to use for memory recognition, and the new disk. It memorizes the desired song among the songs stored in. In addition, the memory data may be stored in the RAM 50 and stored for a long time through backup. In order to perform the method, when the power switch SW1 connected to the power supply 10 is first pressed, the RAM 50 is charged to the capacitor C1 through the diode D1 while supplying power to the microprocessor 20. Supply power. Since the total current is normally consumed by the RAM 50 for several 수, the power is backed up for a long time only by the power charged in the capacitor C1 having a predetermined capacity when the power is turned on. In order to prevent the reversed discharge of the charged charge of the capacitor C1, the diode D1 is connected in one direction between the power switch SW1 and the ram 50.

In addition, in the process of determining whether the memory is a disk, the microprocessor 20 reads the TOC (Table of Content) in step 1a when the disc is inserted into the disk holder and the play button is pressed.

After the TOC is read, step (1b) is performed. In step (1b), it is determined whether the disk has been memorized by comparing the total number of songs of the disk with minutes, seconds, and frames of the total time (2a). If the disk is not in memory, perform the step (3a). In the step (2a), play by the memorized program (program) to play the disc and perform the step (2b).

In step (2b), it is determined whether or not the program is finished. If the program is finished, step (2C) is performed. In step (2C), it is determined whether to repeat the program, and if it is to be repeated, step (2a) is repeated. If not, the program is terminated. In step (3a), play starts from the track No. 1 (Track No1), and step (3b) is performed. In step (3b), it is determined whether or not to store a track of a predetermined track number. If no memory is performed, step (3C) is performed. If memory is performed, step (4a) is performed. In step (3C), it is determined whether to stop, and if it is not stopped, step (3a) is performed again, and if it is to be stopped, it ends.

In step (4a), the memory is primarily stored up to the total number of songs in the TOC, minutes, seconds, and frames of the total time, and the desired track is memorized according to key input. In step (4b), it is determined whether the play key is input, and if the play key is input, step (2a) is performed. If the play key is not input, the program is terminated.

Referring to FIG. 3, a comparison of the information stored in the memory is described in detail. On the disc, a total number of total songs, minutes, seconds, frames, and tracks of total time are recorded, and the address is read as shown in FIG. Address) The total number of songs is stored in the RAM 50 at address 0001, and the tracks (programs) desired for memory are sequentially stored in the RAM 50. When using a disc, put the disc in the disc holder, read the TOC of this disc, and then read the TOC number of the TOC, the minutes and seconds of the total time, and the contents stored at 0001-0004 by the frame and RAM (50) sequentially. Compare.

If the comparison is the same, the first programmed track of address 0005 is played after recognizing it as memorized information. If it is wrong, the program is a new disk.

As described above, if a memory is changed at the time of a disc change or replay in a multi-memory system such as an optical disc player, the memory can be used continuously without being erased for a long time. There is an advantage.

Claims (1)

A method of performing a disc memory function of an optical disc player, the method comprising: a first process of reading a TOC and comparing the total number of songs to minutes, seconds, and frames of the total time, and determining whether the disc has been memorized once; If the disk is memorized in step 1, the program is played by the memorized program, and the second process is played back until the end of the program. If the disk is not memorized in the first step, play starts from the track number 1 track. A third process of determining whether to store the memory, a fourth process of storing the total number of songs in the TOC, minutes, seconds, and frames of the total time in memory when the memory is stored in the third process, and then storing a desired track according to a key input; And a fifth process of performing the second process when the play key is input after the memory in the fourth process. Multi memory control method of optical disc player.

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