KR19980058045A - How to control the song information storage function of a compact disc player - Google Patents

Abstract

The present invention relates to a method of controlling a song information storage function of a compact disc player. When a CD containing song data is mounted on a compact disc player, a disc initial information search step of reading and storing disc initial information contained in a CD of a CD, After the disc initial information search step, if the song information editing mode is set, the song information editing function is executed to execute the song information editing function for storing the song information editing signal inputted by the user using a letter or numeric signal to the memory means. And the playback signal setting judgment step of determining whether the current music playback signal is set after this song information editing function execution step, and as a result of the judgment during this playback signal setting judgment step, When the selected music information is played back, the current song information display setting signal is set. If the song information display setting signal is set, and the song information display setting signal is set, the previously stored song information signal for the currently playing song is displayed on the LCD. In the music information display step, the music editing information necessary for inserting the compact disc is stored in the memory means, and the corresponding music editing information is displayed on the display when the music information recorded on the disc is reproduced.

Description

How to control the song information storage function of a compact disc player

The present invention relates to a method of controlling a song information storage function of a compact disc player. In particular, when the song information required for inserting a compact disc is stored in a memory means and the song information recorded on the disc is reproduced, the corresponding song edit information is displayed on a display. The present invention relates to a method of controlling a song information storage function of a compact disc player, in which a user can clearly recognize the contents of a reproduced song, thereby improving the reliability of the system.

In general, attention is drawn to a large-capacity information recording medium that is currently used. For example, when a recording method of a compact disc is classified, a lead-in area, a program area, and a lead-out area are defined from the inside of the compact disc. And an address (position on the disc), information reproduction time and absolute reproduction time of the information recorded on the compact disc, and are called so-called TOC (Table Of Contents). In the program area, for example, when music information is loaded on the compact disc, at least one piece of music information is recorded, and the lead-out area contains information indicating the end of the program.

Then, referring to FIG. 1, a disc reproducing system equipped with a music selection function used in the above-described manner, an optical pickup 71 which detects a music data signal contained in the CD 70, and this optical pickup A waveform shaping section 72 for waveform shaping the music piece data signal detected by 71, a digital signal processing section 73 for digital signal processing of the music piece data signal waveform shaping by the waveform shaping section 72; The microcomputer 74 controls the music piece data signal inputted from the digital signal processing unit 73, for example, decodes the music piece data and reproduces the registered song number if it is the same as the previously registered identification data, and controls the operation of the system as a whole. ) And an error check bit in sector units of the digital music piece data signal inputted by the music selection control signal of the microcomputer 74. By the CD-ROM decoder 75 for separating the address bits and the data data, the audio decoder 76 for separating the data data of the CD-ROM decoder 75 into the voice signal data, and the voice decoder 76. A voice signal processing unit 78 for low-amplifying the separated music selection signal data to be output to the outside through the speaker 77 and a servo for controlling the driving operation of the spindle motor 79 by the servo control signal of the microcomputer 74. It consists of a control unit 80.

The microcomputer 74 is connected to a key input unit 81 for inputting a user's selection function setting signal.

On the other hand, referring to the operation of the disc playback system equipped with the conventional music selection function as described above, first, the song selection code signal in which the CD 70 containing the song title data is mounted on the tray and the desired song is registered through the key input unit 81. If it is set to the microcomputer 74 recognizes this to drive the spindle motor 79 through the servo control unit 80. Then, the CD 70 is also rotated, and at the same time, the optical pickup 71 detects the music piece data signal contained in the TOS of the CD 70 and inputs it to the waveform shaping unit 72. The waveform shaping unit 72 waveform-forms the input analog detection data signal and inputs the digital signal to the digital signal processor 73. The digital signal processor 73 inputs the input music data signal to the digital signal. After processing, for example, the music piece data signal decoded from the sub code recorded in the program area is signal-processed and input to the microcomputer 74. Then, the microcomputer 74 decodes the input music piece data and inputs music control information according to the music selection setting signal to the CD-ROM decoder 75.

The CD-ROM decoder 75 decodes the control information in the track of the digital selection data signal input by the microcomputer 74, and separates error check bits, address bits, and data data, for example, by sector. Input is made to the audio decoder 76. The voice decoder 76 separates the data data containing the music information into voice data and transmits the data data to the voice signal processor 78. The voice signal processor 78 performs low frequency amplification of the input selection voice data. The user is then emitted to the outside through the speaker 77, the user will listen to the music selected.

However, since the disc reproducing system equipped with the above-described conventional music selection function is not provided with the disc recording information guide means, when the disc 70 is reproduced, the song information to be reproduced, for example, the name of the song, the content of the song, and the singer, etc. Since the user can not know the song information without a separate list at all, the use of the system was quite inconvenient accordingly, and when the disk 70 is equipped with a plurality of disks 70 such as a CD changer to scan a specific song, the disk 70 Since the corresponding songs recorded in Tiosi must be scanned while playing them all from the beginning, there is a problem that the functionality of the system is considerably degraded.

Accordingly, the present invention has been invented to solve the above-mentioned problems. When the compact disc is inserted, the song edit information necessary for inserting the compact disc is stored in the memory means, and the corresponding song edit information is displayed on the display. The purpose of the present invention is to provide a method for controlling the music information storage function of the compact disc player, which enables the user to clearly recognize the contents of the music to be reproduced, thereby improving the reliability of the system.

It is still another object of the present invention to provide a method for controlling a music information storage function of a compact disc player in which a desired music position can be quickly reproduced, thereby improving the functionality of the system accordingly.

The present invention for achieving the above object is a disk initial information search step of reading and storing the disk initial information contained in the CD's Tiosi when the CD containing the song data is mounted on the compact disc player, and the disk initial information search step Later, if the song information editing mode is set, the song information editing function execution step of executing the song information editing function for storing the song information editing signal inputted by the user using a character or numeric signal to the memory means; The playback signal setting judgment step of determining whether the current music playback signal is set after the editing function execution step, and if the music playback signal for setting an arbitrary song is set as a result of the judgment during this playback signal setting judgment step, the selected music information is set. To determine whether the current song information display setting signal is set or not. When the song information display setting signal is set, if the song information display setting signal is set, the song information display step of displaying the previously stored song information signal of the currently playing song on the LCD is performed. It features.

1 is a block diagram illustrating a conventional compact disc player,

2 is an explanatory diagram illustrating a function of the CDP to which the present invention is applied;

3 is a flowchart of the present invention.

〈Description of the symbols for the main parts of the drawings〉

1: CD 2: Optical pickup

3: waveform shaping unit 4: data signal processing unit

5: thioshi storage RAM 6: micom

7: CD-ROM decoder 8: Voice decoder

9: speaker 10: voice signal processing unit

11: spindle motor 12: servo control unit

13: key input section 14: memory means

15: LCD

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

The apparatus to which the method of the present invention is applied includes an optical pickup 2 for detecting a music data signal contained in the CD 1, and a music data signal detected by the optical pickup 2, as shown in FIG. A waveform shaping section 3 for waveform shaping, and a data signal processing section 4 for performing EFM demodulation of an input grain data signal, for example, digital signal processing of the music piece data signal waveform-shaved by the waveform shaping section 3; To store the information on the music tracks recorded in the thio city of the disc 1 inputted from the data signal processing unit 4 in the thio storage unit 5 and to control the music information editing memory function set by the user. It consists of a microcomputer (6).

In addition, at one end of the microcomputer 6, a CD-ROM decoder which separates the digital music data signal inputted by the music selection control signal of the microcomputer 6 into error check bits, address bits, and data data in sector units. 7) is connected, and an audio decoder 8 for separating data data of the CD-ROM decoder 7 into audio signal data is connected to an output terminal of the CD-ROM decoder 7. In addition, the other end of the voice decoder 8 is connected to the voice signal processing unit 10 for low frequency amplifying the music selection data separated by the voice decoder 8 to output through the speaker 9 to the outside, the One end of the microcomputer 6 is connected to the servo control unit 12 for controlling the drive operation of the spindle motor 11 by the servo control signal of the microcomputer 6, the other end of the microcomputer 6 of the user The key input unit 13 for inputting the selection function setting signal and the song information editing signal is connected.

One end of the microcomputer 6 is connected with a memory means 14 for storing a user's song information editing signal, and another end of the microcomputer 6 displays an internal function operation as a letter or numeric signal. The LCD 15 is connected.

Next, a method applied to the apparatus of the present invention configured as described above will be described.

First, when the CD 1 containing the song data is mounted on the tray, the microcomputer 6 recognizes this and proceeds from the initial step S1 to the initial disk search information step S2. Then, the initial disk search information step S2. At S2, the disk initial information stored in the CD's TOS is read and stored.

That is, the microcomputer 6 drives the spindle motor 11 through the servo control unit 12 and the CD 1 rotates accordingly. At the same time, the disc initial information recorded in the TOS of the CD 1 on which the optical pickup 2 is rotated. For example, the disc initial information related to the number, performance time, total playing time, etc. of the song data stored in the disc 1; Is read and input to the waveform shaping part (3). The waveform shaping section 3 inputs the input disk initial information signal to the data signal processing section 4, and then inputs the disk initial information signal to the data signal processing section 4 to perform an information signal processing. For example, the music piece data signal decoded from the sub code recorded in the program area is subjected to signal processing and input to the microcomputer 6. Then, the microcomputer 6 stores all of the input music piece data in the tOS storage RAM 5 and inputs the disco initial information to the CD-ROM decoder 7. At this time, the microcomputer 6 displays the disc initial information of the CD 1 currently mounted through the LCD 15, for example, the number of pieces of music data, the playing time of each song, the total playing time, and the like as a text signal.

On the other hand, after the disc initial information search step (S2), the music information edit mode determination step (S3) proceeds to determine whether the setting signal for setting the song information edit mode to the current system. If the setting signal for setting the song information editing mode is not input as a result of the determination during the song information editing mode determination step (S3), the process proceeds to the function execution waiting step (S4) and waits until the function is set by the user. do. However, if it is determined during the song information edit mode determination step S3 that the song information edit mode is set, the process proceeds to the song information edit function execution step S5 to execute the song information edit function.

That is, when the user wants to insert the information he / she wants into the song data currently inserted into the disc, the user sets the song information editing mode signal, and the user uses the predetermined keys of the key input unit 13 to set the desired character. I input a numeric signal. For example, in the second song, Madonna, or Song Haksan in the third song, the user inputs a text signal to easily understand the contents of the song. Then, the microcomputer 6 stores this input music information editing signal in the memory means 14, and at the same time, the stored input characters are flashed to the LCD 15 and displayed.

On the other hand, after the music information editing function execution step (S5) proceeds to the playback signal setting determination step (S6) to determine whether the current music selection playback signal is set. As a result of the determination in the step S5, if the music selection playback signal for setting an arbitrary music piece is not set, the process proceeds to the function execution waiting step S4 to repeat the loop. However, as a result of the determination during the playback signal setting determination step S6, if the music selection signal for setting an arbitrary music piece is set, the playback function execution step S7 is performed to play the music information selected. After the playback function execution step (S7), the music information display determination step (S8) proceeds to determine whether the current song information display setting signal is set. At this time, if the music information display setting signal is not set as a result of the determination during the music information display determination step S8, the process returns to the previous step S7 to repeat the loop. However, if the song information display setting signal is set as a result of the determination during the song information display determination step (S8), the process proceeds to the corresponding song information display step (S9), whereby the previously stored corresponding song information signal for the song piece currently being reproduced is received. Will be displayed on the LCD.

That is, when the music selection playback signal is set through the key input unit 13, the microcomputer 6 inputs the music selection data input from the CD 1 to the CD-ROM decoder 7. Then, the CD-ROM decoder 7 decodes the control information in the track of the digital selection data signal inputted by the microcomputer 6, and separates error check bits, address bits, data data, etc., for example, by sector. Next, input is made to the audio decoder 8. In this voice decoder 8, the data data containing the music selection information is divided into voice data and inputted to the voice signal processor 11. Then, the voice signal processing unit 11 amplifies the input music data signal low frequency and then emits it to the outside through the speaker 10, so that the user can listen to the music selected by the user. At this time, if the user sets the song information display setting signal through the key input unit 13, the microcomputer 6 recognizes this from the memory means 14 to store the pre-stored corresponding song information signal about the currently selected song data. It is read and displayed on the LCD 15. For example, if the second song data of the CD 1 is currently being reproduced, the corresponding character information signal corresponding to the second song data previously stored in the memory means 14, that is, Madonna, is displayed on the LCD 15. Alternatively, if the third song data of the CD 1 is being reproduced, the corresponding character information signal corresponding to the third song data previously stored in the memory means 14, that is, the songhaksan, is displayed on the LCD 15.

Therefore, according to the above process, the user can easily search for a specific song and can easily recognize the content even if the contents of the CD 1 are being played.

As described above, the present invention stores the music editing information required for inserting a compact disc in a memory means, and when the music information recorded on the disc is played back, the corresponding song edit information is displayed on the display, so that the user can play the song. Since it is possible to clearly recognize the contents of the system, the reliability of the system can be improved accordingly, and the desired song position can be quickly reproduced, thereby improving the functionality of the system.

Claims (1)

When the CD containing the song data is loaded on the compact disc player, the disc initial information search step of reading and storing the disc initial information stored in the CD's Tiosi, and if the song information editing mode is set after this disc initial information search step Execution of the song information editing function for executing the song information editing function for storing the song information editing signal inputted by the user using a character or numeric signal to the memory means, and the current music playback signal is set after this song information editing function execution step If the playback signal setting judgment step of determining whether or not the playback signal setting decision step has been performed during the playback signal setting decision step and the music playback signal for setting an arbitrary music piece is set, the selected music information is played and the current song information display setting signal is set. The music information display judging step of judging whether And if the song information display setting signal is set, a song information storage function comprising the corresponding song information display step of displaying previously stored corresponding song information signal of the currently playing song on the LCD. Control method.