KR19980058846A - How to store disc data in an optical disc player - Google Patents

Abstract

The present invention relates to a disc data storage method of an optical disc player, comprising: (a) reading and storing TOC data and executing playback when a disc is loaded in a disc tray; (B) storing and setting the reserved reproduction or special reproduction data to be input; (C) opening the disc tray when the disc tray open key signal is input, detecting whether the disc is replaced, and closing the disc tray; (D) erasing previously stored TOC data and reserved or special playback data if the disk has been replaced, and reading and storing TOC data for the replaced disk; (E) storing and maintaining the pre-stored TOC data and reserved or special playback data if the disk has not been replaced;

Therefore, the present invention is executed later when the disc is not replaced because the stored TOC data and reserved or special playback data are stored without erasing when the disc is not replaced even when the disc tray is opened / closed. There is an advantage that the function can be coped quickly without time delay for reading and storing the TOC again, and can also be executed without resetting a previously stored reservation or special playback function.

Description

How to store disc data in an optical disc player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of storing disk contents (TOC) data of an optical disc player. In particular, the present invention relates to a method of storing disc contents (TOC), in particular, by detecting whether a disc is loaded and re-reading the TOC data only when the disc is replaced. And a method for storing disc content data of an optical disc player.

With the development of audio and video media, optical disc players for recording and reproducing video and audio data on semi-permanent optical discs have been developed.

Such an optical disc player reproduces an image and / or audio recorded on an optical disc and outputs it through a screen and / or a speaker, and has a higher signal-to-noise ratio than conventional image and / or audio reproducing apparatus, resulting in better image quality and / or Or it can reproduce the signal with sound quality, it does not generate noise due to irregular reproduction and modulation, very low distortion, no ghost and random access, so it is rapidly developed and widely distributed. There is a trend.

In addition, such an optical disk player includes a compact disk player (CDP), a laser disk player (LDP), a compact disk graphic player (CDGP), and a video compact disk player (VCDP: video compact disk player) has been developed and widely used. Also, recently, a digital video disk (DVD) using MPEG-2 moving picture compression technology and a digital video disk player for playing the same have been developed. It can record and play back gigabytes (GB) of data including moving images on a 12cm optical disc such as a CD, and it is also designed to be compatible to play current CDs and VCDs.

On the other hand, in order to perform a predetermined function such as playback in a conventional optical disc player, the loaded disc is loaded as soon as the disc is loaded, and the TOC data recorded in the lead-in area of the disc is read and stored. If a predetermined function key signal is input thereafter, the function is executed by referring to previously stored TOC data.

In addition, such an optical disc player has a wide variety of functions other than normal playback. For example, the contents of the part can be stored by displaying a specific part for a predetermined time. There are a variety of special playback functions and scheduled playback functions, such as index playback that introduces an index play, and track playback that plays a track by entering a desired track number. The data for the play and the reserve play function had to be set in advance.

However, in such a conventional optical disc player, when a disc tray to which a disc is loaded is opened / closed, regardless of whether the disc is replaced or not, the prestored TOC data and data for reserved or special playback for the disc mounted in the disc tray are unconditionally. If the disc is not replaced, it is time-delayed during the time of reading and storing the TOC again, so that it is not possible to quickly cope with a function key signal input later, and also to perform the preset reservation replay. Or there was a problem that the special playback function is released.

Accordingly, the present invention has been made to solve such a problem in the related art, and an object of the present invention is to open a disc tray in a state in which TOC data and a reserved play or special play function for a disc mounted in an optical disc player are stored and set. When closed, it determines whether the disc is replaced and erases the previously stored TOC data and reserved play or special function data only when the disc is replaced, and reads and stores the TOC data again for the replaced disc. SUMMARY OF THE INVENTION An object of the present invention is to provide a disc data storage method for an optical disc player capable of retaining stored TOC data and reserved playback or special function data.

According to a preferred embodiment of the present invention for achieving the above object, when the disc tray mounting the disc is opened / closed, it detects whether the disc is replaced and accordingly processes the pre-stored TOC data and the reserved or special playback data. A disc data storage method of an optical disc player, comprising the steps of: (a) reading and storing TOC data when a disc is loaded in the disc tray and executing playback when a play key signal is input thereafter; Or when the key signal for special playback and data thereof are input, stopping the playback and storing and setting the reserved play or special playback data input; and (c) the disc tray open key signal for opening the disc tray is input. Open the disc tray and detect the disc replacement. Closing the disc tray when a key tray close key signal is input; and (d) if the disc is replaced in step (c), the prestored TOC data and the reserved or special playback data are erased, and the disc is replaced. And reading and storing the TOC data, and (e) storing and storing the previously stored TOC data and the reserved or special playback data if the disk is not replaced in the step (c).

1 is a schematic block diagram of a general optical disc player for practicing the present invention.

2A and 2B are detailed flowcharts of a disk data storage method of an optical disk player according to a preferred embodiment of the present invention.

<Description of the code | symbol about the principal part of drawing>

10: pickup and actuator unit 20: RF signal amplification and servo signal processing unit

30: motor and motor drive unit 40: key input unit

50: microcomputer 55: sensor

60: digital signal processor 70: MPEG decoder

80: audio signal processor 90: video signal processor

100: speaker 110: screen

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

1 is a schematic block diagram of an optical disc player for practicing the present invention.

As shown in FIG. 1, an optical disc player for carrying out the present invention includes a pickup and actuator unit 10, an RF (radio frequency) signal amplification and servo signal processor 20, a motor and motor driver 30, and a key input unit. 40, microcomputer 50, sensor unit 55, digital signal processor 60, MPEG decoder 70, audio signal processor 80, video signal processor 90, speaker 100, screen 110 ), And having a sensor unit 55 for determining the presence or absence of a disc may be referred to as a difference from a general optical disc player.

The pickup and actuator unit 10 executes an optical pickup from a disc loaded in a disc tray (not shown) and outputs an RF signal which is read accordingly.

In addition, the motor and the motor driving unit 30 drive the spindle motor (not shown) to rotate the disk and drive the actuator unit 10 so that the pickup unit 10 performs optical pickup to read data recorded on the disk. To output as an RF signal.

The RF signal amplification and servo signal processing unit 20 amplifies an RF signal provided from the pickup and actuator unit 10 and provides a servo control signal according to the signal to the motor and the motor driving unit so that the focus servo and the tracking servo can be performed. do.

The digital signal processing unit 60 digitally processes the amplified RF signal provided from the RF signal amplification and servo signal processing unit 20, performs error detection and error correction, and outputs the result to the MPEG decoder 70.

The MPEG decoder 70 decodes an error corrected digital video signal and an audio signal provided from the digital signal processor 60 based on the MPEG compression format and outputs the decoded video signal to the video signal processor 90 and the audio signal processor 80. .

The audio signal processing unit 80 and the video signal processing unit 90 process the decoded audio and video signals provided from the MPEG decoder 70 and output them to the speaker 100 and the screen 110, respectively. And the screen 110 are displayed as an audio and an image, respectively.

On the other hand, in the disc tray on which the disc is mounted, a sensor unit 55 for detecting the presence or absence of the disc is mounted at a predetermined position. The disk presence sensor may be a contact switch mounted on the upper surface of the disk tray and turned on or off depending on whether the disk is mounted. The disk presence sensor may be formed of a light emitting part and a light receiving part, and emits light from the light emitting part and reflects on the disk surface. It may be an optical detection sensor that detects the presence or absence of a disk by receiving the received light from the light receiving unit. The output terminal of the sensor unit 55 is connected to a predetermined one input port of the microcomputer 50 to the microcomputer 50 to the disk. Provide a presence detection signal.

On the other hand, according to the present invention, the TOC data of the disc mounted in the disc tray and the reserved reproduction or special reproduction data input by the user through the key input unit 40 are stored in a memory (not shown) built in the microcomputer 50. In the state, when the disc tray open key signal is input from the key input unit 40, the microcomputer 50 generates a control signal to the motor and the motor driving unit 30 to drive the tray driving motor (not shown) to open the disc tray. Let's do it. In addition, when the disc tray is opened, the microcomputer 50 determines whether the disc is replaced from the disc presence determination signal provided from the sensor unit 55. If the disc is present, the sensor unit 55 does not generate a 'high' signal. In this case, it is assumed that a 'low' signal is generated, and the microcomputer 50 may detect whether the disk is replaced by detecting a change in the detection signal from the sensor unit 55. , If the signal 'low' and 'high' is provided continuously, it is determined that the disk has been replaced. If the signal 'high' remains, it is determined that the disk has not been replaced. When generated and the 'low' signal is maintained, it is determined that the disk has been removed from the disk tray.

In addition, after determining whether the disk is replaced through the above-described process, when the disk tray close key signal is provided from the key input unit 40, the microcomputer 50 generates a control signal to the motor and the motor driving unit 30 to generate the disk. Close the tray.

Thereafter, when the disc is replaced, the microcomputer 50 first erases the pre-stored TOC data and reserved reproduction or special reproduction data, and reads and stores the TOC data of the replaced disk. In the case where the disc is not replaced, the microcomputer 50 stores and holds previously stored TOC data and reserved reproduction or special reproduction data.

Fig. 2 is a detailed flowchart of the disc content data storage method of the optical disc player according to the preferred embodiment of the present invention.

First, when a disc is loaded in the disc tray in step S10, in step S12, TOC data is read and stored from the loaded disc.

Thereafter, when the reproduction key signal is inputted in step S14 to perform reproduction, in step S16 it is determined whether the reserved reproduction or special reproduction key signal and the reserved reproduction or special reproduction data are input. When the reproduction or special reproduction key signal and the reserved reproduction or special reproduction data are input, the flow advances to step S18.

Then, in step S18, the reserved reproduction or special reproduction data input in step S16 is stored and set, and the flow advances to step S20.

After that, when the disc tray open key signal is input in step S20, the flow advances to step S22, in which the disc tray is opened and the flow proceeds to step S24.

Then, in step S24, a change in the disk presence signal on the disc tray is detected, and the flow advances to step S26.

After the step S24 is completed, in step S26, it is determined whether the disc tray close key signal is input. If the disc tray close key signal is input, the process proceeds to step S28 to close the disc tray and close the disc tray. When is completed, the process proceeds to step S30.

Thereafter, in step S30, it is determined whether the disc has been replaced according to the disc presence change signal detected in step S24. If the disc has been replaced in step S30, the flow advances to step S32, and the disc is not replaced. If so, the process proceeds to step S36.

On the other hand, when the process proceeds from the step S30 to the step S32, in step S32, the previously stored TOC data and the reserved or special playback data are erased, and when the step S32 is completed, the process proceeds to the step S34 to be replaced. Read and store TOC data on disk.

On the other hand, when the process proceeds from the step S30 to the step S36, in step S36, the pre-stored TOC data and the reserved reproduction or special reproduction data are stored and maintained.

Then, when step S34 or step S36 is completed, the flow ends.

As described above, according to the present invention, even when a disc tray is opened / closed, the TOC data is re-read for the replaced disc after erasing previously stored TOC data and reserved or special playback data only when the disc is replaced, If the disc is not replaced, the stored TOC data and the reserved or special playback data are stored without being erased if they are not replaced. It also has the advantage that it can be executed without resetting a previously stored reservation or special playback function.

Claims (1)

In the disc data storage method of the optical disc player to detect whether the disc is replaced when the disc tray to which the disc is loaded is opened / closed and to process the pre-stored TOC data and the reserved or special playback data. (A) reading and storing TOC data when a disc is loaded in the disc tray and executing playback when a play key signal is input thereafter; (B) stopping the reproduction and storing and setting the reserved reproduction or special reproduction data when the key signal for the reserved reproduction or the special reproduction and data thereof are inputted; (C) opening the disc tray when the disc tray open key signal for opening the disc tray is input, detecting whether the disc is replaced, and closing the disc tray when the disc tray close key signal is input; (D) if the disc has been replaced in step (c), erasing the pre-stored TOC data and the reserved or special playback data, and reading and storing TOC data for the replaced disc; (E) storing and preserving the pre-stored TOC data and reserved reproduction or special reproduction data if the disc is not replaced in step (c).