KR980011375A - Improved compact disc player and method of displaying its track title data - Google Patents

Abstract

The present invention relates to an improved compact disc player and a method for displaying track title data thereof. In the conventional compact disc player, an end point and a start point of each track of digital signals provided from the digital signal processor (16) A microcomputer 24 for detecting and outputting data on a title of a corresponding track recorded in a pause time between the pause time and the pause time; A character decoder for character processing and outputting data of a title output from the microcomputer; And a display unit (30) for displaying a character signal provided from the character decoder (28). By displaying the title of the track currently being reproduced, the effect of allowing the user to easily recognize the title of the track currently being reproduced have.

Description

Improved compact disc player and method of displaying its track title data

FIG. 1 is a view for explaining a configuration of data tracks recorded on an optical disc; FIG.

2 is a view showing a format of data recorded on a typical compact disc;

3 is a block diagram of a configuration of an improved compact disc player according to a preferred embodiment of the present invention;

4 is a flowchart of a method of displaying track title data in an improved compact disc player according to another preferred embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10: motor and motor driving unit 12: optical pickup unit

14: RF and servo signal processing unit 16: digital signal processing unit

18: servo control unit 20: D / A converter

22: Audio signal output unit 24: Microcomputer

26: character decoder 30:

The present invention relates to a compact disc player, and more particularly, to an improved compact disc player and its track title data display method capable of displaying the title of data recorded in each track of a disc when playing back from a compact disc .

2. Description of the Related Art [0002] With the development of audio media for recording and reproducing predetermined audio data, a compact disc player (CDP), which is configured to record audio data on an optical disc having a diameter of 12 cm and read out the recorded data, : compact disk player) has been developed and widely used, and there is a tendency that it continues to develop to improve its performance.

On the other hand, such a compact disc player reproduces a voice recorded on an optical disc and outputs the reproduced voice through a speaker, so that it can reproduce a signal with better sound quality because it has a higher signal-to-noise ratio than conventional voice reproduction apparatuses, And the optical disk in which the audio data is recorded, that is, the compact disk, has a semi-permanent life span, etc. And it is in widespread use.

In a compact disc used for reproduction in such a conventional compact disc player, data of the same kind is separately recorded for each track. For example, if the data recorded on the compact disc is songs, the data is recorded in each track divided into titles of songs, that is, songs.

Meanwhile, when reproducing a compact disc containing a plurality of such songs, the user does not know the title of the song. In this case, the user has to check the title of the song written on the disk case to know the title of the song. There were some inconveniences in use.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and it is an object of the present invention to provide an improved method for displaying a title of a track representing the contents of data recorded on each track, A compact disc player and a method for displaying the title track data thereof.

According to an aspect of the present invention, there is provided an optical pickup apparatus including an optical pickup unit for reading data recorded on a disk and outputting a corresponding RF signal, A servo control unit for generating a control signal according to a servo signal provided from the RF and servo signal processing unit, and a control unit for controlling the servo control unit, which is driven according to a servo signal provided from the servo control unit, A motor and a motor driving unit for performing focus and tracking servo on the disk; a digital signal processing unit for digitally processing the amplified RF signal provided from the RF and servo signal processing unit; A digital-to-analog converter for converting the digital signal into a digital signal; And an audio signal processor for processing an analog signal to output an audio signal. The pause time between the end point and the start point of each track recorded on the disc includes a title of each track data And detects and outputs data on a title of a corresponding track recorded at a pause time between an end point and a start point of each track of the digital signals provided from the digital signal processing unit during reproduction, And a character decoder for character-processing the data when the data for the title is provided from the microcomputer, and a display unit for displaying the molecular signals provided from the character decoder.

According to another aspect of the present invention, there is provided an optical disc recording and / or reproducing apparatus including an optical pickup unit for reading and outputting data recorded on a disc, a pause time between an end point and a start point of each track recorded on the disc, A RF and servo signal processing unit for recording the title of each track data, amplifying an RF signal provided from the optical pickup unit and processing a servo signal, a control unit for controlling the servo signal based on the RF signal and the servo signal provided from the servo signal processing unit, A motor and a motor driving unit driven in accordance with a servo signal provided from the servo control unit to perform focus and tracking servo on the disk; A digital signal processing section for digitally processing the signal, an output of the digital signal processing section An audio signal processor for processing an analog signal provided from the digital-to-analog converter and outputting the processed analog signal; and a digital signal processor A microcomputer for detecting and outputting data on a title of a track recorded in a pause time between an end point of the track and a start point of the track; A method for displaying track title data in an improved compact disc player, the method comprising the steps of: (a) if the execution mode of the compact disc player is currently the reproduction mode If the current playback position (B) if the current playback position is the pause time period, mute the output audio signal, and if the current playback position is the pause time point, (D) decode and display the title data of the track, and display the title data of the track; (c) when the pause time period ends, the mute of the output audio signal is released, .

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

FIG. 1 shows a diagram for explaining a configuration of a track recorded on a disc.

As shown in FIG. 1, there is a pause time of 2-3 seconds between each track.

In the present invention, at the time of producing a disc, a title of a track starting in this area is recorded using a pause time between the end point and the start point of the track.

On the other hand, FIG. 2 shows a format of a general data frame recorded on a disc.

In the pause time, the POINT shown in FIG. 2 is set to '00'. Therefore, for each data frame in which the POINT is set to '00', MIN is used as an index, and character data is recorded in six bytes of the remaining SEC, FRAME, ZERO, PMIN, PSEC and PFRAME.

Since a data frame as shown in FIG. 2 is recorded on a compact disc at a rate of 75 frames per second, a total of 900 bytes can be recorded when the pause time is 2 seconds, You can record enough data about the title.

That is, in order to implement the present invention, at the time of making a disc, the MIN is used as the index of the title in the pause time area, and the Korean characters are recorded in 2 bytes per character using SEC, FRAME, ZERO, PMIN, PSEC and PFRAME The English alphabet is allocated by 1 byte per character.

3 is a block diagram of an improved compact disc player according to a preferred embodiment of the present invention and includes a motor and motor driving unit 10, an optical pickup unit 12, an RF and servo signal processing unit 14, a digital signal processing unit 16 A servo controller 18, a digital / analog converter (D / A) 20, an audio signal output unit 22, a microcomputer 24, a character decoder 26 and a display unit 30 .

As described above, when the title of each track is loaded on a disc tray (not shown) recorded in the pause time area between the track and the track and playback is performed (TOC (table of contents) data The optical pickup unit 12 reads data recorded on a predetermined track of the disc D and outputs RF signals to the RF and servo signal processing unit 14 and RF and servo signal processing units 14 Performs processing such as amplification of an RF signal provided from the optical pickup unit 12 and outputs the RF signal to the digital signal processing unit 16 and also outputs a servo signal for focus and tracking servo to the servo control unit 18. [

The digital signal processing unit 16 performs error correction and digital signal processing on the signals provided from the RF and servo signal processing unit 14 and provides the signals to the microcomputer 24 and the D / A converter 20, (18).

The servo control unit 18 provides the servo and control signals corresponding to the servo signals provided from the RF and servo signal processing unit 14 and the digital signal processing unit 16 to the motor and motor driving unit 10 to perform tracking, focus, and spindle servo Respectively.

On the other hand, the microcomputer 24 detects data on a title recorded in the pause time region among the digital signals provided from the digital signal processor 16, and provides the detected data to the character decoder 26.

The character decoder 28 character-processes data on the title of a track provided from the microcomputer 24 and outputs the processed data to the display unit 30. The display unit 30 displays the character as a character so that the user can recognize the title of the track being reproduced I can do it.

Meanwhile, in the present invention, the display unit 30 may be formed of a liquid crystal display (LCD) or a light emitting diode.

4 is a flowchart illustrating a method of displaying track data in an improved compact disc player according to another preferred embodiment of the present invention.

In step S10, it is determined whether the current mode is the playback mode. If the current playback mode is the playback mode, it is determined in step S20 whether the current playback position is a pause time interval between the end point of the track and the start point of the next track.

If the current playback position is a pause time period, the process proceeds to step S30 where the audio output signal is muted and data on the title of the track recorded in the pause time period is read out. In step S40, The track title data read out in step S30 is decoded and displayed. In other words, the title of the track after the pause time interval is displayed.

Thereafter, in step S50, it is determined whether or not the current playback position is out of the pause time period, that is, whether the pause time has ended. If the pause time period has ended, the process proceeds to step 60 to cancel the audio mute, At the point where the time interval ends, the traced track is played back and the flow is returned.

Therefore, the present invention has the effect of allowing the user to easily recognize the title of the track currently being reproduced by displaying the title of the track currently being reproduced when the disc is reproduced in the compact disc player, just before the track is reproduced.

While the present invention has been particularly shown and described with reference to certain preferred embodiments thereof, those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the invention as set forth in the following claims.

Claims (3)

An optical pickup unit 12 for reading the data recorded on the disk D and outputting an RF (radio frequency) signal in accordance with the read RF signal; and an optical pickup unit 12 for amplifying the RF signal provided from the optical pickup unit 12 and processing the servo signal A servo control unit 18 for generating a control signal in accordance with a servo signal provided from the RF and servo signal processing unit 14 and a control unit 18 for controlling the servo signal provided from the servo control unit 18, A motor and a motor driving unit 10 driven by the motor and driving servo to perform focusing and tracking servo on the disk D and a digital signal processing unit for digitally processing the amplified RF signal provided from the RF and servo signal processing unit 14, A digital-to-analog converter 20 for converting the output signal of the digital signal processor 16 into an analog signal, an analog-to-digital converter 20 for converting the analog signal provided from the digital- A pause time between an end point and a start point of each track recorded on the disk D is recorded in a pause time of each track data A title is recorded and data on a title of a corresponding track recorded in a pause time between an end point and a start point of each track among the digital signals provided from the digital signal processing unit 16 A microcomputer 24 for detecting and outputting the signal; A character decoder for character-processing the data and outputting the data if the data for the title output from the microcomputer is provided; And a display unit (30) for displaying a character signal provided from said character decoder (28). The improved compact disc player according to claim 1, wherein the display unit (30) comprises a light emitting diode or a liquid crystal display. An optical pickup unit 12 for reading the data recorded on the disk D and outputting a corresponding RF frequency signal, and an optical pickup unit 12 for recording the pause time between the end point and the start point of each track recorded on the disk D a servo signal processing unit 14 for amplifying an RF signal provided from the optical pickup unit 12 and processing a servo signal, a RF signal processing unit A servo control unit 18 for generating a control signal in accordance with a servo signal provided from the servo control unit 14 and a servo control unit 18 for controlling focus and tracking servo on the disk D, A digital signal processing unit 16 for digitally processing the amplified RF signal provided from the RF and servo signal processing unit 14 and a digital signal processing unit 16 for processing the output signal of the digital signal processing unit 16 An audio signal output unit 22 for processing an analog signal provided from the digital / analog converter 20 and outputting the processed analog signal; and a digital signal processor A microcomputer 24 for detecting and outputting data for a title of a corresponding track recorded at a pause time between an end point and a start point of each track among digital signals provided from the microcomputer 16, And a display unit (30) for displaying a character signal provided from the character decoder (28), wherein the character decoder (28) A track title data display method in an improved compact disc player, the method comprising: (a) If the playback mode comprising: a current reproducing position determining whether posing time point between the track and the track; (B) if the current reproduction position is the pause time interval in the step (a), mute the output audio signal, read out the title data of the track recorded in the pause time period, decode the data by characters and display ; (C) releasing the mute of the output audio signal when the pause time period ends, and reproducing the track on which the title of the track is displayed in the pause time period, in an improved compact disc player . ※ Note: It is disclosed by the contents of the first application.