KR950012230B1 - Fast data search system of disk player - Google Patents

Abstract

The system including a disc driving part, a pickup unit, a RF amplifier and a video signal processing part, comprises an input unit(18) capable of inputting a high-speed search command and designating a location information on the disc for fast search, a microcomputer(20) for generating a fast search location information of the disc depending upon a regeneration process state information, the fast search command, and a disc search location information, and a graphic data generation part(22) for generating a first graphic bar provided from the microcomputer, a second graphic bar to display a present disc regeneration location by the location information of a cursor and an image display data of the cursor.

Description

High speed data search device of disc playback system

1 is a block diagram for explaining a configuration of a high speed data search apparatus of a disc playback system according to the present invention.

FIG. 2 is a diagram for explaining the configuration of the graphic bar data generation unit shown in FIG.

3 is a view for explaining an example of the data search screen display implemented by the high speed data search apparatus of the disc playback system according to the present invention.

* Explanation of symbols for main parts of the drawings

10: disc drive unit 12: pickup device

14 amplification unit 16 video signal processing unit

18: input device 20: microcomputer

22: graphic data generation unit 24: output device

220: graphic data generation circuit 222: video synthesis processing unit

224: video signal conversion unit

The present invention relates to a high speed data search apparatus of a disc playback system. More particularly, the present invention relates to a playback time or a playback frame displayed by a graphics bar while displaying the playback progress (playback time or playback frame) of the disk in the form of a graphic bar. A high speed data search apparatus of a disc reproducing system which enables a high speed search of data recorded on a disc on the basis of information.

Disc-shaped information recording media on which a large amount of information is recorded are classified into compact discs capable of providing high quality audio signals and laser discs capable of reproducing audio and video signals. Therefore, it is divided into Constant Linear Velocity (CLV) method and Constant Angular Velocity (CLV) method.

For example, in the case of a laser disc in which an audio signal and a video signal are recorded, a screen search should be performed based on the playback time in the case of a CAV type disc to search and play a specific screen, whereas in the case of a CLV type disc, the screen is composed. The screen search should be done based on the frame.

Currently, for high-speed search of data recorded on a CLV-type disk, a high-speed search is performed based on the absolute time of the disk using a so-called jog & shuttle, but the search operation is performed on a frame basis. The CLV disk of this type must be implemented with a memory.

When searching for a desired data using so-called 'time search or frame search', it is possible to input time or frame information, but in general, it is possible to accurately recognize the playing time or frame of the disc currently being played. Since it is difficult to do so, it is difficult to search for desired data on the disk.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described state of the art, and displays the playback progress state of a disc on a television applied as an output device of a video signal, and displays the data recorded on the disc based on the displayed current disc playback information. It is an object of the present invention to provide a high-speed search apparatus of a disc playback system that enables a high-speed search.

In order to achieve the above object, according to the present invention, there is provided a disc drive unit for driving a disc on which disc information including an audio signal and a video signal is recorded, and a pickup device for optically reading disc information from the disc. A disc reproducing system comprising an RF amplifying unit for RF amplifying read disc information and a video signal processing unit for processing amplified disc information to obtain a video signal, the disc reproducing system comprising: a disc for high speed search command input and a high speed search command; High speed search for a disc according to an input device capable of designating position information on the image, information indicating a playback progress state for the disc progressed by the pickup device, and a high speed search command and disc search position information applied from the input device. Microcomputer to generate location information, graphic bar and cursor provided by microcomputer Provided is a high speed search apparatus for a disc playback system, comprising a graphic bar for displaying a current disc playback position and a graphic data generator for generating screen display data of a cursor and displaying it on a television.

According to a preferred aspect of the present invention, the graphic data generating unit moves a graphic bar and a cursor indicating the playing degree (time, frame) of the disk based on the current playback progress information and the fast search position information of the disk applied from the microcomputer. A graphic synthesizer for generating data, a video synthesizer for synthesizing the video signal processed by the video signal processor and image data of a graphic bar and a cursor generated in the graphic data generator, and a video synthesized by the video synthesizer And a video signal converter for converting a signal into a composite video signal.

According to another preferred aspect of the present invention, the graphic data generating unit includes a graphic bar and a cursor indicating the disc's playing degree (time, frame) based on the current playback progress information and the fast search position information of the disc applied by the microcomputer. An OSD circuit for generating movement data, multiplexing means for multiplexing the video signal processed by the video signal processing unit and image data of a graphic bar and a cursor generated by the OSD circuit, and the multiplexing means by the multiplexing means. And a video signal converter for converting the flexed video signal into a composite video signal.

In addition, the input device is equipped with a shuttle function for roughly adjusting the cursor indicating the playback position of the disc and a jog function for fine adjustment of the cursor so that a high speed search position can be specified for the disc. . In this case, the jog shuttle is applied as a cursor moving means for cursor control instead of a unique function in the high speed search mode.

According to another example of the present invention, the input device may be configured as a button for designating the position of the cursor while the cursor is settled in the position for high-speed search.

According to the high-speed search apparatus of the disc playback system according to the present invention configured as described above, it is possible to know the current playback state of the disc by displaying the playback time or frame of the disc by graphically processing the graphic bar and the cursor on the television screen. When the fast search command is input from the input device, the fast search is performed by moving the cursor to the search position.

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

1 is a block diagram illustrating the configuration of a high-speed data search apparatus of a disc reproducing system according to the present invention, where 10 is a CLV or CAV disc D in which disc information including audio and video signals is recorded. As a disk drive unit for driving, it is actually comprised with a spindle motor for constant speed rotation of the disk and a spindle motor control circuit for controlling the rotation of the spindle motor. 12 is a pick-up device that assembles a light beam with respect to the disk D rotated at constant speed by the disk driving unit 10 and reads out disk information based on the reflected light reflected from the surface of the disk D. An RF amplifying unit for RF amplifying the disk information read by the pickup device 12, 16 is a video signal processing unit for processing the disk information amplified by the RF amplifier 14 to obtain a video signal.

18 is an input device for inputting a command for high speed search of a disc in one embodiment of the present invention, preferably a jog function for setting an approximate search position during high speed search on a disc, and a shuttle function for fine positioning. And a jog shuttle, and according to another example of the input device 18, a button for positioning the cursor while the cursor is moved to the high-speed search position of the disk.

20 is the current playback progress state for the disc D read by the pickup device 12 and advanced by the pickup device 12 based on the RF amplified signal amplified by the RF amplifying unit 14. That is, in the case of the CLV type disc, the information indicating the current playback time or the case of the CAV type disc indicates the playback frame, the fast search command and the disc search position information applied by the input device 18. A microcomputer for generating high-speed search position information for the disc D, and 22 is a graphic bar for displaying the current disc playback position based on the position information of the graphic bar and the cursor provided by the microcomputer 20, and the display disk of the cursor. Is a graphic data generation unit for generating and displaying on the output device 24 such as a television.

According to a preferred aspect of the present invention, the graphic data generation section 22 displays the current playback progress information (playback time) for the disc D applied from the microcomputer 20 as shown in FIG. Or a graphic data generation circuit 220 for generating a graphic bar representing the reproduction information (playback time or frame) of the disc and movement data of the cursor based on the playback frame) and the fast search position information, and in the video signal processor 16; The video signal synthesizer 222 which synthesizes the processed video signal and the image data of the graphic bar and the cursor generated by the graphic data generation circuit 220 and the video signal synthesized by the video synthesizer 222 are composite video signals. And a video signal converting unit 224 for converting to.

According to another aspect of the present invention, the graphic data generation section 22 displays the current playback progress information (reproduction) for the disc D applied from the microcomputer 20 as shown in FIG. An OSD circuit 221 for generating a graphic bar indicating the playback degree (playback time or frame) of the disc and movement data of the cursor based on the time or playback frame) and the fast search position information, and the video signal processor 16 for processing. The multiplexer 223 for multiplexing the video signal and the graphic data generated by the OSD circuit 221 and the cursor and the video signal synthesized by the multiplexer 223 are converted into a composite video signal. The video signal conversion unit 225 is provided.

In the graphic data generating unit 22, the graphic data generating circuits 220 and 221 are set as a color bar which is set in one line of the output device 24 for the entire disc playback time or frame on the output device 24. In addition to the display, for example, a CDG (Compat Disk Graphics) for outputting graphic data for displaying a cursor indicating a time or frame currently reproduced in the entire reproduction time of the disc. These CDGs will be equipped with Line Graphics and TV Graphics to generate graphic data.

Referring to FIG. 3, which illustrates an example of the data search screen display implemented by the high speed data search apparatus of the disc playback system according to the present invention, two lines of televisions, which are generally employed as the output device 24, are reproduced in full reproduction of the disc. In the case where the number of pixels of one line of the television is 288 pixels, it is allocated to the graphic bar 30a indicating the playback time or playback frame currently played back in the time or playback frame and the cursor 30b indicating the fast search position. In the CDG constituting the graphic data generation circuit 220 or 221, in the case of line graphics, one line of the television is composed of 48 fonts (one font is composed of 6 x 12 pixels). The screen is displayed in 48 x 2 fonts for the 30a and the cursor 30b. The graphic bar 30a displays the playback time or frame of the disc. In contrast, in the case where the CDG processes the graphic data as a TV graphic, the graphic bar 30a and the cursor are assumed to be 30 minutes in total length of the graphic bar 30a. Considering that the length of time between the start point and the end point is also set to 30 minutes, and a screen is normally formed in 60 seconds,

30 (minutes) * 60 (seconds) / 288 (pixels) = 4.17 (seconds)

Each time, the display state of the graphic bar 30a is increased by one step (that is, one pixel). In this case, the graphic bar 30a may change the color of the background color according to the playback time or playback frame of the disc by lifting the background color and the color indicating the playback time of the disc.

On the other hand, when the total playback time of the disc is 20 minutes, the one pixel shift time of the graphic bar 30a is

20 (minutes) * 30 (seconds) / 288 (pixels) = 4.17 (seconds)

Become.

During the normal disc playback, the cursor 30b changes its position according to the movement of the graphic bar 30a which is converted according to the playback time (or playback frame) of the disc. By the shuttle function set in the input device 18 according to the high speed search command, the position is approximately determined on the graphic bar 30a for the high speed search, and the fine position is determined by the jog function to control the high speed search position. Will be done.

Next, a high speed search apparatus of the disc reproducing system according to the present invention configured as described above will be described.

Hereinafter, a case in which a CLV disc is applied as a disc for reproducing an audio signal and a video signal will be described.

First, in the normal playback state of the disc, the disc information including the audio signal and the video signal recorded on the CLV type disc D rotated by the disc drive unit 10 at constant speed is read out by the pickup device 12, and the RF is read. The amplified unit 14 is amplified and the RF amplified disk information is applied to an audio signal processing apparatus (not shown) for reproduction of an audio signal, and to the video signal processing unit 16 to reproduce a video signal. The graphic data generation unit 22 is applied.

The microcomputer 20 outputs the position control signal of the graphic bar 30a and the cursor 30b by calculating the current playback time for the disc D. Accordingly, the graphic of the graphic data generation unit 22 is output. The data generation circuit 220 displays a graphic bar on the output device 24 on which an image signal reproduced from the disc D is displayed based on a current reproduction time for the disc D applied from the microcomputer 20. 30a) and the cursor 30b are superimposed, and the graphic bar 30a and the cursor 30b move as the playback time of the disc D is made. do.

Subsequently, in the video synthesis processing unit 222 constituting the graphic data generating unit 22, the video signal from the disk D applied by the video signal processing unit 16 and the graphic data generating circuit 220 are applied. Graphic data is synthesized so that graphic data is superimposed on a background video signal by a so-called 'super-impose' process, and the synthesized video signal is applied to an image signal converter 224 to output the device. It is converted so as to conform to the format of the television (NTSC or PAL system) employed as (24), and then displayed on the output device 24, thereby informing the reproduction progress state of the current disc D.

If the high-speed search command is input from the input device 18 in this normal disc playback state, that is, if the high-speed search command is input by the shuttle function provided to the input device 18, the microcomputer 20 inputs the input device 18. The change of the shuttle in the jog shuttle function of the control unit controls the graphic data generation circuit 220 of the graphic data generation unit 22 according to the positional information to display the cursor 30b displayed on the output device 24 in the graphic bar ( It moves to the left or right side (for example, the position indicated by 30b) on the ground of 30a so that the rough cursor movement is performed to the position of the fast search (i.e., the position on the disk D). Subsequently, when the position of the cursor 30b on the graphic bar 30a is finely adjusted using the jog of the input device 18, the pickup device 12 instructs the cursor 30b under the control of the microcomputer 20. By moving to a position to be able to accurately perform the high-speed search function.

During the execution of the high speed search operation, the display position of the graphic bar 30a maintains the current playback position regardless of the movement of the cursor 30b.

According to the present invention, the search or cursor jumping operation by the input device 18 is performed when the data from the jog shuttle is not input for a predetermined time (a few ms or several seconds) after the operation of the jog shuttle employed as the input device 18. The jumper operation of the cursor 30a is initiated or a separate cursor jump button is provided in the input device 18 to display the screen of the cursor 30b and then the cursor jump button is operated. Will be done.

On the other hand, in addition to the display of the graphic bar 30a and the cursor 30b on the output device 24, if the disc currently being played during normal disc playback is the CLV system, the playback time is the same. On the other hand, during the high-speed search, time information (in case of a disk of CLV method) corresponding to the position movement of the cursor 30b for high-speed search is displayed or frame information (in case of a disk of CAV method) is displayed. In the high-speed search, since the search position is determined under the confirmation of the position of the cursor 30b and the time information or the frame information, the accurate high-speed search position can be set.

FIG. 2 (b) is a view for explaining a modification of the graphic data generation unit 22. The microcomputer 20 includes a CDG 220 which is responsible for graphic processing of the graphic bar 30a and the cursor 30a. OSD circuit 221 which handles OSD (On Screen Display) under the control of the control panel and displays the current playback time of the disc D applied from the microcomputer 20 and the high-speed search position. It is configured to handle graphics processing for the position of the cursor 30b indicating.

On the other hand, the present invention can be controlled to move the cursor directly between chapters and chapters when the movie program that contains the TOC or chapter (Chapter) classification on the laser disk, the jog operation, that is jog in CLV type disk When a signal is input, the graphic bar and the cursor are displayed, and then the cursor is used in font units for 1 second at each jog rotation. In this case, the graphic bar shows the relative position of the disc currently in progress.

As described above, according to the present invention, the disc is displayed by using the cursor on the basis of the play time or the play frame information displayed by the graphic bar while displaying the play progress (play time or play frame) state of the disc in the form of a graphic bar. Since the high speed search position of the data recorded on the above is set, a more accurate high speed search function can be realized.

Claims (4)

A disc drive unit 10 for driving a disc D on which disc information including audio and video signals is recorded, a pickup device 12 for optically reading disc information from the disc D, and the pick-up device 12 A disc reproducing system comprising an RF amplifying section 14 for RF amplifying the disc information read by the < RTI ID = 0.0 >) < / RTI > An input device 18 capable of inputting a high-speed search command for the high-speed search command and specifying position information on the disc D for the high-speed search, and indicates a playback progress state for the disc D carried by the pickup device 12. Microcomputer 20 for generating the high-speed search position information for the disc according to the information indicating and the high-speed search command applied from the input device 18 and the disc search position information: the microbar 20 of the graphics bar and the cursor provided from the microcomputer 20 A graphic bar 30a for displaying the current disc playback position and a graphic data generator 22 for generating screen display data of the cursor 30b and displaying on the output device 24 on the basis of the value information. High-speed data value of a disc playback system characterized by The method of claim 1, wherein the graphic data generation unit 22 is based on the current playback progress information and the high-speed search position information for the disk (D) applied from the microcomputer 20, the playback accuracy (time, A graphic data generation circuit 220 for generating movement data of the cursor 30b and a graphic bar 30a indicating a frame), a video signal processed by the video signal processor 16, and the graphic data generation circuit 221. A video synthesizing unit 222 for synthesizing the image data of the graphic bar 30a and the cursor 30b, which is generated by the video bar, and a video signal converting unit for converting the video signal synthesized by the video synthesizing unit 222 into a composite video signal. 224, a high speed data search apparatus for a disc playback system. 3. The graphic data generating circuit 220 according to claim 2, wherein the graphic data generating circuit 220 uses a graphic bar indicating the play degree (time, frame) of the disc and the moving disk of the cursor based on the current play progress information and the fast search position information of the disc. A high speed data search apparatus of a disc reproducing system, comprising a CDG to be generated. 3. The graphic data generating circuit 220 according to claim 2, wherein the graphic data generating circuit 220 displays a graphic bar indicating the reproduction degree (time, frame) of the disc and movement data of the cursor based on the current reproduction progress information and the fast search position information of the disc. A high speed data searching device of a disc playback system, characterized in that it is configured by an OSD circuit for generating OSD processing.