KR19990012004A - How to Display Playback Information of a Digital Video Disc Player - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reading and displaying information on data currently being played in playing a predetermined digital video disc (DVD) in a digital video disc player. Making a step; (B) determining whether an information display key signal is input if the disc being played in step (a) is a DVD and counting an elapsed time from that time when the information display key signal is input; (C) if a function key signal for predetermined desired information is input before the elapsed time reaches a predetermined predetermined time, reading and displaying information according to the key signal.

Accordingly, the present invention has an effect of allowing a user to recognize this information by displaying information on data currently being played in playing a DVD in a digital video disc player.

Description

How to Display Playback Information of a Digital Video Disc Player

The present invention relates to a reproduction method of a digital video disc player, and more particularly, to a reproduction information display method of a digital video disc player that enables a user to recognize the information by reading and displaying information on data currently being played.

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, referring to the data format recorded on a digital video disc (hereinafter, abbreviated as DVD) reproduced in such a digital video disc player, first, the innermost track of a DVD is a lead-in area, and the control data and When rough information about the data recorded on the disc is recorded, the next track is a volume and file structure area, and then a video area, one VMG (Video Maneager) area and 1 to 99 areas. Video title set (VTS) areas. The outermost track is composed of a lead-out area.

The VMG area constituting the video area is composed of control data called VMGI (Video Maneager Information), VMGM_VOBS representing a video object set for the VMG menu, and VMGM_BUP data, which is backup data of control data. .

On the other hand, each VTS area, which is a substantial data area, is a set of titles, control data called VTSI (Video Title Set Information), VTSM_VOBS representing data on menus of the VTS, and VTSTT_VOBS, which is a video object set for titles in the VTS. It consists of a VTSI_BUP which is backup data of control data.

The data recorded on the DVD configured as described above includes angle information according to the shooting angle of the image, data representing audio information, sub-picture information, and title information. The information on the menus is recorded as data.

Therefore, as described above, since many types of data are recorded on the DVD, there is a problem that the user may not recognize the information on the content being reproduced during playback.

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 play a predetermined DVD in a digital video disc player, and display information on data currently being played by a user. The present invention provides a method for displaying playback information of a digital video disc player.

According to a preferred embodiment of the present invention for achieving this object, a digital video disc player for reading and displaying information on data currently being played back when playing a predetermined digital video disc (DVD) in a digital video disc player. A playback information display method comprising the steps of: (a) determining whether a disc currently being played is a DVD; and (b) determining whether an information display key signal is input if the disc being played in step (a) is a DVD. Counting the elapsed time from the time when the display key signal is input; and (c) if a function key signal for a predetermined desired information is input before the elapsed time reaches a preset predetermined time; Reading and displaying it.

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

2 is a detailed flowchart illustrating a method of displaying reproduction information of a digital video disc player according to an embodiment of the present invention;

3 (a), (b), (c), (d) and (e) show information data displayed in accordance with the present invention.

* Explanation of symbols for main parts of the drawings

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 60: digital signal processing part

70: MPEG decoder 75: AC-3 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 a digital video disc player for practicing the present invention.

As shown in Fig. 1, a digital video 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 a motor driver 30, keys Input unit 40, microcomputer 50, digital signal processing unit 60, MPEG decoder 70, AC-3 decoder 75, audio signal processing unit 80, video signal processing unit 90, speaker 100, Screen 110.

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

On the other hand, when the playback key signal is input from the key input unit 40 and playback is performed under the control of the microcomputer 50, the pickup and actuator unit 10 is optically picked up from the disk loaded in the disk tray (not shown). By executing the RF signal is read according to the RF signal amplification and servo signal processing section 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 separates the error-corrected digital signal provided from the digital signal processor 60 into a video signal and an audio signal, and provides an audio signal to the AC-3 decoder 75, and the video signal is provided in the MPEG compression format. Based on the decoding, the video signal is output to the video signal processor 90. The AC-3 decoder 75 decodes the audio signal decoded in the AC-3 Dolby manner and provides the decoded audio signal to the audio signal processor 80.

Accordingly, the audio signal processing unit 80 converts the audio signal decoded by the AC-3 decoder 75 into an analog signal, processes the audio signal, outputs the audio signal to the speaker 100, and the speaker transmits it as voice. The video signal processor 90 converts the decompressed and decoded video signal provided from the MPEG decoder 70 into an analog signal, processes the video signal, and outputs the video signal to the screen 110. Display.

By the way, in order to perform playback on a predetermined disc through the above-described operation, first, the microcomputer 50 starts the contents of the data recorded on the disc from the lead-in area, which is the innermost region of the disc, at the beginning of disc loading. The information is read out and stored in an internal memory (not shown). Since the content information also includes data on the type of the disc currently being played, the microcomputer 50 can recognize the type of the disc through this data. .

On the other hand, when the information display key signal is input from the key input unit 40 while the DVD is reproduced through the above-described process, the microcomputer 50 drives the built-in timer (not shown) from that point on time to count the elapsed time. do.

At this time, if the function key signal for the desired information is not input until the elapsed time of the timer reaches a predetermined time, for example, 10 to 20 seconds, the microcomputer 50 cancels the information display function and resumes normal playback. Run

Further, according to the present invention, if the function key signal for the desired information is input from the key input unit 40 before the elapsed time of the timer reaches a predetermined time, for example, 10 to 20 seconds, the microcomputer 50 Generates a control signal, reads the information on the function key signal, and provides the corresponding character data to the video signal processor 90 to process the OSD (on screen display) in the video signal processor 90 to display the screen 110. To be displayed as text via.

That is, for example, when the angle key signal is input within a predetermined time after the information display key signal is input, the angle information is read and read from the disc, and the current angle number is switched as shown in FIG. 3 (a). Data about possible angles and the like is displayed on the screen 110. In addition, if the audio key signal is input within a predetermined time after the information display key signal is input from the key input unit 40, as shown in Fig. 3B, the language of the current audio and the total language that can be played back are shown. Displays in what languages the screen 110.

In other words, when the sub-picture key signal or the title key signal or the menu key signal is input again within a predetermined time after the information display key signal is input from the key input unit 40, FIGS. 3 (c), (d), (e) As shown in Fig. 2), the microcomputer 50 reads and reads the information data for the sub-picture, the information data for the title, and the information data for the menu from a predetermined area of the DVD, and reads the character data accordingly. Output to 90 to be displayed through the screen (110).

2 is a detailed flowchart illustrating a method of displaying playback information of a digital video disc player according to an exemplary embodiment of the present invention.

In step S10, it is determined whether the disc currently being played is a DVD. If the disc currently being reproduced is a DVD in step S10, the flow advances to step S12, and in step S12 it is determined whether an information display key signal is input.

If the information display key signal is input in step S12, the flow advances to step S14, and if not, the flow is fed back. On the other hand, when the information display key signal is input in step S12 and proceeds to step S14, in step S14, when the information display key signal is input, the elapsed time is counted to reach the preset time step S46. If not, proceed to step S16.

First, when the process proceeds from step S14 to step S16, it is determined whether the angle key signal is input in step S16. If input, the angle information is read and read in step S18, and in step S20, FIG. The angle information is displayed as text as shown in (a).

On the other hand, if the angle information key signal is not input in step S16, it is determined whether the audio key signal is input in step S22. If the audio key signal is input, the process proceeds to step S24 to read the audio information and again. In step S26, the audio information is displayed as shown in Fig. 3B.

If the audio key signal is not input in step S22, it is determined whether the sub-picture key signal is input in step S28, and if the input is performed, the sub picture information is read in steps S30 to S32. The sub-picture information is displayed as shown in 3 (c).

If the sub-picture key signal is not input in step S28, it is determined whether the title key signal is input in step S34, and if it is input, the tight information is read and read in steps S36 to S38. Title information is displayed as shown in 3 (d).

Finally, if the title key signal is not input in step 9S34, it is determined whether the menu key signal is input in step S40. If the menu key signal is input, the menu information is read in steps S42 to S44. As shown in Fig. 3E, the menu information is displayed as text, and if no menu key signal is input, the flow returns to step S14 to repeat the flow.

On the other hand, if the function key signal for the desired information is not input until the predetermined time, e.g., 10 to 20 seconds has elapsed in step S14, the process proceeds to step 9S46) to cancel the information display function and again. In step S48, normal playback is executed and the flow returns to step S12.

As described above, the present invention has an effect of allowing a user to recognize this information by displaying information on data currently being played in playing a DVD in a digital video disc player.

Claims (3)

In playing a predetermined digital video disc (DVD) in a digital video disc player, a method of displaying play information of a digital video disc player for reading and displaying information on data currently being played, (A) determining whether the disc currently being played is a DVD; (B) determining whether an information display key signal is input if the disc being played in step (a) is a DVD and counting an elapsed time from that time when the information display key signal is input; (C) reading and displaying information according to the key signal if a function key signal for predetermined desired information is input before the elapsed time reaches a preset predetermined time; and displaying playback information of the digital video disc player. Way. The digital video disc player according to claim 1, further comprising: canceling the information display function and executing playback if a function key signal for predetermined desired information is not input within a predetermined time in step (c). How to display playback information The method of claim 2, wherein the predetermined time is 10 to 20 seconds.