KR19980058830A - Section Search Playback Method for Optical Disc Player - Google Patents

Abstract

The present invention relates to a section search reproduction method of an optical disc player.

To this end, the present invention stores the total reproduction time data of the TOC (table of contents) data stored at the beginning of the disc by a predetermined equal interval (N) at equal intervals. Is displayed along with the serial number, and when the user selects one section, playback is performed for the selected section.

When a small section selection key signal is input while the playback for the selected section is executed, the section being played is again divided into predetermined (M) portions and displayed together with the serial number, and thereafter, the user wants one of the displayed sections. If you select the section, the detail section is played.

Accordingly, the present invention has the effect of allowing a user to search for a position where desired data is recorded more quickly and accurately when playing a predetermined disc, and to perform playback from that position.

Description

Section Search Playback Method for Optical Disc Player

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a search and playback method for an optical disk flare, and more particularly, to a section search and playback method for an optical disk player which searches for a desired position for playback and executes playback from that position.

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, 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. In this search playback, a track search for inputting a desired track number to perform playback from that track and a time search playback for inputting time data for a desired position to perform playback from that position, and also playback at high speed. There is a scan playback to find the desired position while checking the image to be played back.

However, the time search play which inputs time data of a desired position and executes play from that position among these search plays has a disadvantage in that the user cannot accurately find a desired play position only with the time data. That is, as time data for a location desired by the user, there is a disadvantage in that the user cannot reproduce exactly the desired location without actually checking what contents are recorded at the location.

In addition, in playing tracks, it is difficult to find a desired position because the position desired by the user cannot necessarily be the start position of a predetermined track.

In addition, in the case of scan playback, since the playback is performed at high speed and the desired position is found while checking the played video, there is a problem in that it takes a lot of time.

Accordingly, the present invention has been made to solve such problems in the related art, and an object of the present invention is to perform a playback from the position by quickly and accurately searching the playback position desired by the user in performing the playback in the optical disc player. It is to provide a method for searching the interval search of an optical disc player.

According to a preferred embodiment of the present invention for achieving the above object, an interval search reproduction of an optical disc player which searches for a position where desired data is recorded among data recorded on a predetermined disc and executes playback from that position. The method comprises the steps of: (a) loading the disc and reading and storing TOC (table of contents) data; and (b) when the storage of the TOC data is completed, the total playing time of the disc in the stored TOC data is determined. Setting a serial number and storing time data for the initial position of each section divided by a predetermined portion (N) and waiting for a key input, and (c) a section search reproduction key signal If input, displaying the time data of the initial position of each of the divided sections (N) stored in the step (b) together with the serial number; (C) referring to the time data for the initial position of the section and executing playback from the section when a section selection key signal for selecting one desired section among the displayed sections is input; Determining whether a small section search key signal for selecting a more detailed section is input from the section on which playback is performed in step (d); and (e) the small section search key signal is If it is not input, executing the playback until the playback of the section selected in the step (d) is completed; and (g) if the small section search key signal is input in the step (f), the playing section is predetermined again. Dividing (M) and displaying the time data for the initial position for each predetermined equal (M) section together with the serial number; and (h) displaying the display in step (g). When a period of a predetermined block selection key signal for selecting one of the input section of a step of executing the reproduction until a predetermined interval selected playback is complete.

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 method for searching and searching section of an optical disc player according to a preferred embodiment of the present invention.

3 illustrates data displayed on a screen for carrying out 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 60: digital signal processing part

70: MPEG decoder 80: Audio signal processor

90: video signal processing unit 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, the microcomputer 50, the digital signal processor 60, the MPEG decoder 70, the audio signal processor 80, the video signal processor 90, the speaker 100, and the screen 110.

First, the key input unit 40 provides the microcomputer 50 with a function key signal (the user presses and inputs a predetermined function key) for executing a predetermined function in the optical disc player configured as described above. The key input unit 40 constituting the optical disc player for carrying out the invention further includes section search keys (not shown) and small section search keys (not shown) in addition to the general function keys.

In addition, the microcomputer 50 generates control signals corresponding to the function key signals provided from the key input unit 40 to the respective constituent members so as to execute a predetermined function, for example, a playback function.

On the other hand, when a playback key signal is input from the key input unit 40 and a control signal is generated from the microcomputer 50, the pickup and actuator unit 10 loads a disk mounted on a disk tray (not shown), The pickup is performed, and the RF signal read according thereto is output to the RF signal amplification and servo signal processing unit 20.

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 the 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 30 to provide the focus servo and the tracking servo. To be done.

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 order to execute the above-described functions, first, the microcomputer 50 reads the table of contents (TOC) data recorded in the lead-in area of the disc at the beginning of the disc loading, thereby reading the internal memory (not shown). This TOC data includes information on the contents recorded on the disc, such as the total reproduction time of the disc, the relative reproduction time relative to the total reproduction time of each track.

Therefore, according to the present invention, when a disc is mounted in the disc tray, the microcomputer 50 loads the disc mounted in the disc tray, reads out and stores the TOC data, and stores the TOC data and then sets the total reproduction time at equal intervals. It divides into equal parts (N), divides them into predetermined sections (N), stores and sets the time data for the start position in each section by designating a serial number, and waits for key input.

That is, as shown in Fig. 3A, the entire reproduction time of the disc is divided into 1 to N sections by designating the serial number, and the time data of the start position in each of the 1 to N sections is stored.

Thereafter, when the section search reproduction key signal is input from the key input section 40, the microcomputer 50 outputs the data and control signals divided into 1 to N sections, which are stored in the internal memory, to the video signal processing section 90 accordingly. The video signal processor 90 processes OSD (on screen display) data provided from the microcomputer 50 and outputs the data to the screen 110. The screen 110 is designated with a serial number as shown in FIG. 3A. Display time data divided into equally divided N sections.

Accordingly, when the user selects one of the sections displayed on the screen as shown in FIG. 3A by pressing a section selection key of the key input unit 40, that is, a numeric key, the microcomputer 50 selects time data of the selected section. The selected section is reproduced by generating a control signal to the motor and the motor driver 30, the RF signal amplification and servo signal processor 20, the digital signal processor 60, and the like.

As described above, when the small section search key signal is input again from the key input unit 40 during the playback of the selected section, the microcomputer 50 sets the playback time of the section being played again at the same interval by specifying the serial number again. Equally M, the data and control signals are provided to the video signal processing unit 90, and the video signal processing unit 90 processes the OSD to provide the screen 110, and the screen 110 is shown in Fig. 3B. Display as shown. That is, as shown in Fig. 3B, when a small section search key signal is input while the second section is selected and the playback is executed, the second section is assigned a serial number of 1 to M again, that is, the initial position in each section, namely, , Display time data for starting position.

When the user inputs a key signal for selecting one of the displayed small sections through the key input unit 40 as shown in FIG. 3B, the microcomputer 50 receives time data of the section selected according to the input selection key signal. The control signal is generated by the motor and the motor driver 30, the RF signal amplification and servo signal processor 20, the digital signal processor 30, and the like to search for the start position of the selected section, and from the searched start position, Play the section. That is, for example, if two sections are selected in Fig. 3B, playback is performed from the position of the time data (12:00) of the two sections to the time data (14:00) position of the three sections.

On the other hand, if the small section search key signal is not input while playing the selected section among the sections shown in FIG. 3A, playback is performed to the end point of the section. That is, as described above, if a small section search key signal is not input while the second section is selected and the playback is executed in FIG. 3A, playback is performed to the end position of the second section, and the playback is stopped when the playback of the two sections is completed. do.

As a result, the user selects and reproduces a desired section from 1 to N sections equally divided at equal intervals, and records a desired section, that is, desired data, among the sections where the selected section is divided into 1 to M sections from 1 to N sections. The selected position can be played.

2A and 2B are detailed flowcharts of the section search reproduction method of the optical disc player according to the preferred embodiment of the present invention.

When the disc is loaded in step 9S10), in step S20, the TOC data recorded in the lead-in area of the loaded disc is read and stored.

In step S30, it is determined whether the reading and storing of the TOC data are completed. If the reading and storing of the TOC data is completed in step S30, the flow proceeds to step S40.

Thereafter, in step S40, the time data for the entire reproduction time of the stored TOC data is divided into equal intervals N at predetermined intervals, and the time data at the start position for each interval is designated and stored. In step S50, the process waits for key input.

Then, in step S60, it is determined whether the section search key signal is input. If the section search key signal is provided from the key input unit 40, the process proceeds to step S70, and in step S70, the section search key signal is divided into predetermined sections N. Section time data stored together with the serial number is displayed as shown in FIG. 3A.

Thereafter, in step S80, it is determined whether a numeric key for selecting one of the sections displayed in step S70, that is, a section selection key signal is input, and in step S80 a section selection key signal is If it is input, the process proceeds to step S90 to play the selected section.

When the reproduction of the section selected in step S90 is executed, it is determined whether a small section search key signal is input in step S100. If the small section search key signal is input in step S100, the process proceeds to step S110. If no input is made, the process proceeds to step S150.

First, when the process proceeds from the step S100 to the step S150, in step S150, it is determined whether the playback of the section selected in the step S80 is completed, and when it is completed, the playback is stopped and the flow ends. Return to step S100 to perform the flow again.

On the other hand, when the process proceeds from step S100 to step S110, in step S110, the current playback section selected in step S80 is divided into predetermined sections M, as shown in FIG. 3B, for each section. Display the time data of the starting position by specifying the serial number.

Thereafter, when the small section selection key signal is input in step S120, the process proceeds to step S130 to reproduce the selected small section, and the process proceeds to step S140.

Then, in step S140, it is determined whether the playback of the small section selected in step S120 is completed. When the playback of the small section is completed in step S140, the playback is stopped and the flow ends, and the playback is not completed. In step S160, it is determined whether another function key signal is input. If another function key signal is not input in step S160, the flow returns to step S140. If input, the flow proceeds to step S170 to execute a function according to the input function key signal and then ends the flow.

As described above, the present invention has the effect of reproducing the section by searching the section desired by the user more quickly and accurately in performing the playback in the optical disc player.

Claims (2)

In an interval search and playback method of an optical disk player, a search is performed on a position where desired data is recorded among data recorded on a predetermined disk, and playback is started from the position. (A) loading the disk and reading and storing table of contents (TOC) data; (B) When the storage of the TOC data is completed, the total playing time of the disc is divided by a predetermined number (N) among the stored TOC data, and the time data for the initial position for each predetermined equal portion (N) is serial number. Setting and storing the data and waiting for a key input; (C) displaying the time data for the initial position of each equally divided (N) section stored in the step (b) together with the serial number when the section search reproduction key signal is input; (D) if a section selection key signal for selecting a desired section among the sections displayed in step (c) is input, executing playback from the location with reference to the time data for the initial position of the section; ; (E) determining whether a small section search key signal for selecting a more detailed section is input from the section in which playback is performed in step (d); (F) if the small section search key signal is not input in step (f), performing playback until the playback of the section selected in step (d) is completed; (G) When the small section search key signal is input in the step (f), the playing section is again divided by a predetermined amount (M), and the time data for the initial position of each section divided by the predetermined equal (M) is obtained. Displaying with the serial number; (H) if a small section selection key signal for selecting one of the sections displayed in step (i) is input, executing the playback until the playback of the selected small section is completed; Section search playback method. The method of claim 1, wherein the predetermined sections (N and M) are each divided into equal intervals with respect to the total playback time.