KR960015988B1 - Removed song revival control method of minidisk recording and reproducing apparatus - Google Patents

Abstract

reading the song number processing data recorded in a disc to record the data into a RAM; reading the song number data as to the corresponding song from the RAM by inputting the removed song number through a key to adjust it as a song number to recover by subtracting 1 from the read song number; recovering and playing the start position of the removed song by the song number to recover, and inputting ENTER key in case that the played audio signal is the wanted song; performing the song number data in order to store the song number to be recovered in the song number data of the RAM; and recording the song number data in a song number processing region of the disc.

Description

Restoration control method of erased song of mini disc recording / playback device

1 is a schematic block diagram of a mini-disc recording / playback apparatus to which the restoration control method of the present invention is applied.

2 is an illustration of an internal region division of a RAM in the device of FIG.

3A to 3C are illustrations of a music number processing table recorded in the U-TOC area of the RAM of FIG. 2 for explaining the effects of the present invention.

4 is an algorithm to which the restoration control method of the present invention is applied.

The present invention relates to a method for restoring a deleted song of a minidisc recording / reproducing apparatus, and more particularly, to a wrong song not to be erased while performing an erase function of a song recorded on the minidisc. The present invention relates to a restoration control method of an erased song of a mini-disc recording / reproducing apparatus which controls to restore the song again when it is deleted.

In the conventional mini-disc recording / reproducing apparatus, since a song once erased is not restored, it is inconvenient to re-record the same song when the user accidentally erases a song that the user does not want to erase.

The present invention has been made to solve such a conventional inconvenience, and an object of the present invention is to provide a method for restoring erased songs of a mini-disc recording / reproducing apparatus capable of restoring erased songs again.

In order to achieve the above object, the present invention reads the number processing data recorded on the disk and writes to the RAM, and inputs the erased song number through the key to read the song number data for the corresponding song from the RAM, Subtracting 1 from the read song number data to determine the song number to be restored, finding and replaying the starting position of the song erased by the song number to be restored, and inputting the ENTER key if the audio signal to be reproduced is a desired song; And performing song number data processing for storing the song number to be restored in the song number data of the RAM, and recording the song number processing data of the RAM in the song number processing area of the disc.

Hereinafter, specific features, functions, and effects of the present invention will be described in detail with reference to the accompanying drawings.

1 is an overall configuration of a mini disc recording / playback apparatus to which the restoration control method of the present invention is applied, and is used to record audio signals on a mini disc or to reproduce audio signals recorded on a mini disc.

First, when recording an audio signal to a disc, the audio data is converted into a digital signal through the A / D converter 8, compressed by the voice compression encoder 7 and then under the control of the RAM controller 6 RAM ( 5) are stored. When the stored data becomes more than one cluster, which is a predetermined data unit, it is encoded by the EFM encoder 4, signal-amplified by the signal amplifier 2, and then recorded on the disc through the recording head on the pickup 1. do.

Reference numeral 9 denotes a microcomputer for controlling the operation of the recording / reproducing apparatus, and 3 is a servo circuit for controlling the driving of the pickup 1.

On the other hand, when reproducing the audio signal recorded on the disc, the audio signal read out through the pickup 1 is amplified by the signal amplifier 2, decoded by the EFM decoder 4, and then the RAM controller 6 Is stored in the RAM 5 under the control of. The audio data stored in the RAM 5 is extended at a rate of about 5 times through the voice extension decoder 7 and then converted into an analog signal through the D / A converter 8 and output.

2 is a diagram illustrating an internal region state of the RAM 5 and an example in which 4M RAM is used.

As shown, the data is divided into a main data area of 192 sectors, a U-TOC data area of 3 sectors, and a TOC data area of 4 sectors, and data related to the number of songs recorded on the disc in the U-TOC data area. Is recorded.

That is, FIGS. 3A to 3D show the music number processing table in the U-TOC area, and show the state of change of music number and song data when the music is erased and restored. In FIG. 3, the song number is a continuous value, and the song number data is recorded in the P-TNO, and the song number data is a value indicating the start of the song.

The erasure of the songs recorded on the mini-disc is done simply and in a short time by editing the song number in the U-TOC. However, since the actual audio data remains as it is, it is possible to restore the erased song through song number editing by the method of the present invention.

In the erasing mode, in the case of erasing song number information (3) song C of U-TOC as shown in FIG. 3 (a), song number (D) is shifted to this song (3) ( 3) As the song is processed, the original song (3) is processed as if it is erased, resulting in the U-TOC song information as shown in FIG.

4 is an algorithm diagram to which the restoration control method of the present invention is applied, which is used when the music C thus erased is to be restored again.

First, when the music is switched to the recovery mode of the erased music, information of the U-TOC recorded on the disk is read out by the pickup 1 of FIG. 1, through the signal amplifier 2 and the EFM decoder 4, and then the RAM controller. The control is written in the U-TOC area of the RAM 5 under the control of (6).

Subsequently, the erased song number is inputted as a key, and the song number data corresponding to the input song number (that is, the song number data (4) of song (D) of song (3) of FIG. 3 (b)) is read out from this song number data. Subtract 1 to make the song number you want to restore.

For this song number to be restored, the start position of the erased song is found and restored and played back, while checking the output audio signal, and if desired, the ENTER key is input. At this time, if the song is not desired, the STOP key is pressed to stop the playback.

Once the ENTER key is input, once the song number data is stored as the shifted song number and the song number to be restored is moved back to the song number data, the song number is increased by 1 and the shifted song number is moved to the song number to be restored.

At this time, it is determined whether the shifted song number is the last song number, and if it is the last time, the song number to be restored is stored in the song number data, and if not the last song, the song number data is continuously shifted until the last song number is reached.

When the music number data processing is finished, the U-TOC data of the RAM 5 is read under the control of the RAM controller 6, through the EFM encoder 4 and the signal amplifier 2, and then by the pickup 1 of the disk. After the recording in the U-TOC area, the restoration mode of the erased song is terminated.

3 (c) shows a music number processing state in which the erased music is restored as in FIG. 3 (b).

As described above, according to the method of the present invention, it is possible to restore the music erased wrongly on the mini-disc, so that there is an advantage that it is convenient to use and the reliability of the product can be improved.

Claims (3)

Reading the song number processing data recorded on the disk and writing it to the RAM, inputting the erased song number through the key to read the song number data for the corresponding song from the RAM, and subtracting 1 from the read song number data to the song number to be restored. Determining and retrieving and reproducing the starting position of the song erased by the song number to be restored, inputting the ENTER key when the audio signal to be reproduced is desired, and storing the song number to be restored in the song number data of the RAM. And performing song number data processing, and recording the song number processing data of the RAM in a song number processing area of the disc. 2. The mini-disc recording / reproducing apparatus of claim 1, further comprising a step of stopping playback by inputting a stop key when the audio signal to be reproduced when the reconstructed song is not a desired song is further provided. To control the recovery of music. 2. The method of claim 1, wherein the processing of the song number data in the RAM comprises: storing the song data as a shift song number and moving the song number to be restored to the song number data; and increasing the song number to 1 and restoring the shift song number. Determining whether the shift song number is the last song number, and if the last song number is the last song number, storing the song number to be restored in the song number data, and if not the last song number, continuously shifting the song number data until it becomes the last song number. A method of restoring deleted music in a mini-disc recording / playback apparatus.