KR100236113B1 - Method to playback a desired position in a disk for use in an optical disk player - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a search and playback method of an optical disc player, comprising: (a) a TOC indicating content information of data recorded on the disc from a lead-in area of the disc after loading a predetermined disc; (table of contents) reading and storing data; (B) As a result of reading the TOC data, if there is only one track recorded on the disc for each data content, the entire playback time of the disc is divided into predetermined time intervals, and a virtual track number is assigned to each section. Storing the data and waiting for a key input, and immediately waiting for a key input if there are more than one tracks classified and recorded on the disc according to data contents; (C) If the virtual track search key signal is input after the step (b), it is determined whether there is a virtual track stored in the step (b), and if the virtual track exists, the start position of the virtual track according to the input virtual track number is searched. And then executing playback.

Therefore, the present invention has the effect of searching for and playing back the desired contents recorded on the disc more easily and quickly when the number of tracks classified and recorded on the disc by content is one.

Description

How to Play and Search for Optical Disc Players

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a search and playback method of an optical disc player. In particular, when data recorded on a predetermined disc is composed of one track, an optical disc player can search and play desired data more easily and quickly. A search reproduction method.

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 pictures on a 12cm optical disc such as a CD, and it is designed to be compatible with current CDs and VCDs.

On the other hand, such an optical disc player is provided with various functions for convenience of use, and one of them is a search and play function that searches for a desired position and executes playback from that position. Such seek playback includes track playback for inputting a desired track number to perform playback from that track, and time search playback for inputting time data for a desired position to perform playback from that position.

However, in executing such a search and play function, a disc having a plurality of tracks classified by contents, for example, a song accompaniment disc, can search and play a desired track using track play. Likewise, in the case of a disc in which only one track exists, track reproduction as described above cannot be used.

Also. In the case of such a movie disc, time search play can be used. However, in this case, the user must input multi-digit time data corresponding to the time position, and also store the time position at which the user desired contents are recorded. The problem arises that it is impossible to quickly search for the desired location.

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 allocate a virtual track at a predetermined time interval for a preliminary playing time for a disc composed of one track such as a movie and the like. The present invention provides a search and playback method for an optical disc player that can search and play a desired position quickly.

According to a preferred embodiment of the present invention for achieving the above object, in the search and reproducing method of an optical disk player for searching and playing a desired position with respect to data recorded on a predetermined disk, (a) loading a predetermined disk; Thereafter reading and storing TOC (table of contents) data representing the content information of the data recorded on the disc from a lead-in area of the disc, and (b) reading the TOC data. As a result, if there is only one track recorded according to the data content on the disc, the total playing time of the disc is divided into predetermined time intervals, the virtual track number is allocated to each section, and stored. And waiting for a key input as soon as there are more than one track recorded by data content on the disc, (C) If the virtual track search key signal is input after the step (b), it is determined whether there is a virtual track stored in the step (b), and if the virtual track exists, the start position of the virtual track according to the input virtual track number is searched. And then executing playback.

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

Fig. 2 is a detailed flowchart showing a search and playback method of an optical disc player according to a preferred embodiment of the present invention.

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

10: Pick-up 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: RAM

60: Digital signal processing unit 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, memory 55, digital signal processor 60, MPEG decoder 70, audio signal processor 80, video signal processor 90, speaker 100, screen 110 It includes.

The key input unit 40 provides a function key signal for executing a predetermined function to the microcomputer 50, and the microcomputer 50 provides a control signal for executing a function according to the key signal provided from the key input unit 40. Occurs.

Then, the pickup and actuator unit 10 performs optical pickup from a disc loaded in a disc tray (not shown) at a predetermined function, for example, during reproduction, thereby amplifying the RF signal read out accordingly. Output to the servo signal processing unit 20.

On the other hand, the motor and the motor driving unit 30 drives the spindle motor (not shown) under the control of the microcomputer 50 to rotate the disk and drive the actuator unit 10 so that the pickup unit 10 performs optical pickup. Read the data recorded on the disk and output it as an RF signal.

The RF signal amplification and servo signal processing unit 20 amplifies the RF signal provided from the pickup and actuator unit 10 and also refers to the signal to send a servo control signal for the focus and tracking servo to the motor and the motor driving unit 30. By providing a focus servo and tracking servo.

The digital signal processing unit 60 performs digital signal processing on the amplified RF signal provided from the RF signal amplification and servo signal processing unit 20 and performs error detection and error correction, and then provides the signal 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 to the video signal processor 90 and the audio signal processor 80 based on the MPEG compression format. .

The audio signal processor 80 and the video signal processor 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 transmission and an image, respectively.

On the other hand, according to the present invention, when a predetermined disk is mounted on the disk tray, the microcomputer 50 generates a control signal so that the pickup unit 10 loads the disk, and then, the motor and the motor driving unit 30. The disk is rotated by generating a control signal to drive the motor and the motor drive unit 30.

At the same time, the pickup section 10 reads the table of contents (TOC) data representing the content information of the data recorded on the disk, which is recorded in the lead-in area of the disk, and provides it to the RF signal amplifying section 20. The RF signal amplification unit 20 amplifies the signal to a predetermined level and provides it to the digital signal processor 60, and the digital signal processor 60 processes the signal and provides the signal to the microcomputer 50.

Then, the microcomputer 50 reads the TOC data processed and provided by the digital signal processing unit 60 and stores them in the memory 55. In addition, the microcomputer 50 refers to the read TOC data to determine whether there is one track distinguished for each content on the disc. In this case, when there is only one track identified, the microcomputer 50 sets the entire microcomputer at a predetermined time interval. The sections are divided by the playback time, the virtual track numbers are assigned to each section, and stored in the memory 55. That is, for example, if the total playback time is 50 minutes and the preset time interval is 10 minutes, the memory 55 is divided into five sections in ten minute units and assigned virtual track numbers 1 to 5, respectively. Store in In addition, the memory 55 may be configured as a RAM 55 having a predetermined capacity.

On the other hand, after that, i.e., when the number of tracks is two or more or the tracks are determined as one from the read TOC data and the virtual tracks are allocated and stored, the microcomputer 50 controls the motor and the motor drive unit 30. A signal is generated to switch to the standby mode by stopping the driving of the pickup and the actuator unit 10.

As described above, when the virtual track search key signal is input from the key input unit 40 after the switch to the standby mode, the microcomputer 50 reads data stored in the RAM 55 to determine whether or not a virtual track set for storage exists. At this time, if there is a virtual track, the starting position of the virtual track corresponding to the virtual track number input from the key input unit 40 is continuously read, and the pickup is generated by generating a control signal to the motor and the motor driving unit 30 accordingly. The unit 10 is driven to search for the start position of the input virtual track, and playback is performed from that position. In addition, when there is no stored virtual track, the microcomputer 50 generates text data and control signals indicating that two or more tracks are recorded on the disc to the video signal processing unit 90, thereby generating the video signal processing unit 90. Through the display 110 to display the number of tracks is two or more.

2A and 2B are detailed flowcharts showing a search and playback method of an optical disc player according to a preferred embodiment of the present invention.

In step S10, the disc loaded in the disc tray is loaded, and in step S20, the TOC data recorded in the lead-in area of the loaded disc is read out and stored in the memory 55.

Thereafter, in step S30, the microcomputer 50 determines whether there is one track recorded separately by contents on the disc with reference to the read-stored TOC data, and if there is only one track determined, step S40. If not, proceed to step S70.

When the process proceeds from the step S30 to the step S40, the step S40 refers to the read TOC data and divides the entire playback time into predetermined time intervals. In step S50, the virtual track number is assigned to each section. After the allocation, the data is stored in the RAM 55 together with the time data for the start position of each virtual track. In step S60, it is determined whether the allocation and storage of the virtual track are completed.

In step S60, when the track number allocation and storage for the virtual track is completed, the flow advances to step S70 to switch to the standby mode to wait for key input.

Thereafter, in step S80, it is determined whether the virtual track search key signal is input. When the virtual track search key signal is input in step S80, the flow advances to step S90 to determine whether a virtual track exists. If there is a virtual track in S90, the process proceeds to step S100, and if not, the process proceeds to step S140.

First, when the process proceeds from step S90 to step S100, it is determined whether the virtual track number to be searched for is input in step S100. When the virtual track number is input in step S100, the process proceeds to step S110. Search the starting position of the input virtual track. When the start position search of the virtual track input in step S120 is completed, the process proceeds to step S130 to perform playback from that position, and when the step S130 is completed, the flow returns.

On the other hand, when the process proceeds from step S90 to step S140, in step S140, the flow is returned after displaying for a predetermined time as a character that the total number of tracks recorded on the disc is two or more.

As described above, the present invention has an effect that the desired contents recorded on the disc can be searched and reproduced more easily and quickly when the number of tracks classified and recorded on the disc according to the contents is one.

Claims (2)

A search and playback method of an optical disk player for searching for and playing back a desired position with respect to data recorded on a predetermined disk, (A) reading and storing TOC (table of contents) data representing content information of data recorded on the disc from a lead-in area of the disc after loading a predetermined disc; (B) As a result of reading the TOC data, if there is only one track recorded on the disc for each data content, the entire playback time of the disc is divided into predetermined time intervals, and a virtual track number is assigned to each section. Storing the data and waiting for a key input, and immediately waiting for a key input if there are more than one tracks classified and recorded on the disc according to data contents; (C) If the virtual track search key signal is input after the step (b), it is determined whether there is a virtual track stored in the step (b), and if the virtual track exists, the start position of the virtual track according to the input virtual track number is searched. And reproducing, then reproducing and reproducing the optical disc player. 2. The search and playback method of an optical disc player according to claim 1, further comprising the step of displaying, as characters, that there are two or more tracks recorded on the disc if there is no virtual track in step (c).

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