KR19990011983A - How to introduce a digital video disc player - Google Patents

Abstract

The present invention relates to a content introduction method of a digital video disc player, comprising the steps of: (a) reading the total number of VTSs recorded on the DVD and the playing time for each VTS when a content introduction function key signal is input; (B) If the read time of the read VTS is larger than the predetermined time, the natural number is set as the number of introduction sections of the value obtained by dividing the playback time by the predetermined time, and the playback speed is sequentially repeated for several minutes for each introduction section. Executing; (C) if the read time of the read VTS is less than or equal to a predetermined predetermined time, executing normal play for the VTS for 10 to 20 seconds from the beginning of the VTS; (D) repeating steps (b) to (c) until the contents introduction function is completed for the number of VTSs read in step (a) when step (b) or (c) is completed. And it is configured, there is an effect that allows the user to understand the contents introduced more clearly.

Description

How to introduce a digital video disc player

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a content introduction method of a digital video disc player, and more particularly, to performing a content introduction function by reading a playback time for a specific section and executing the content introduction function by a number of times proportional to the time. A method of introducing the contents of a 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, a data format recorded on a digital video disc (hereinafter, abbreviated as DVD) played in such a digital video disc player will be described.

The innermost track area of the DVD is a lead-in area. When the control data and the rough information on the data recorded on the disc are recorded, the next track is the volume and file structure area. Next, the video area is composed of one VMG (Video Maneager) area and 1 to 99 VTS (Video Title Set) 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.

On the other hand, a digital video disc player as described above has a built-in content introduction function for convenience of use, which is divided into data areas recorded on a predetermined disc and divided into data areas, i.e., so-called tracks. It is a function that introduces the contents of the track to the user by sequentially playing the first part of each track for a predetermined time, for example, about 10 minutes for the divided area.

On the other hand, since DVDs generally record data with a long length of a track such as a movie, etc., there is a problem in that a conventional content introduction function is insufficient to introduce the contents of a track recorded for a long time.

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 read and reproduce the playback time for each VTS in executing a content introduction function in a digital video disc player. It is to provide a content introduction method of a digital video disc player that allows the user to recognize the content more easily by executing the content introduction function by setting the section.

According to a preferred embodiment of the present invention for achieving this object, a digital video disc player for sequentially playing a predetermined time for each predetermined section with respect to a predetermined digital video disc (DVD) equipped with a digital video disc player. In the content introduction method, data is recorded by dividing an area into a predetermined number of video title sets (VTS), and (a) when a content introduction function key signal is input, the total number of VTSs recorded on the DVD and each of them. Reading a playback time for the VTS of (V), and (b) if the playback time of the read VTS is greater than a predetermined time, the natural number is set as the number of introduction intervals. Performing double speed regeneration for several minutes sequentially for each introduction section; and (c) the read VTS If the playback time is less than or equal to the predetermined time, performing normal playback for the VTS for 10 to 20 seconds from the beginning of the VTS; and (d) when the (b) or (c) step is completed, And repeating steps (b) to (c) until the contents introduction function is completed for the number of VTSs read in step).

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 content introduction method of a digital video disc player according to a preferred embodiment of 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, the pickup and actuator unit 10 performs an optical pickup from the disk loaded in the disk tray (not shown), and outputs the RF signal read out accordingly 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 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.

On the other hand, according to the present invention, in the digital video disc player operating as described above, when the introductory function key signal is provided from the key input unit 40, the microcomputer 50 firstly checks the number of all VTSs recorded on the disc, and each of them. Read the playback time for the VTS.

After that, the microcomputer 50 sequentially executes the content introduction function for each VTS, but if the playback time of the VTS is smaller than the predetermined time, for example, compared with a predetermined time, for example, about 20 minutes. In a general manner, the control signal is generated by the motor and the motor driving unit 30 to allow the pickup and the actuator unit 10 to search for the first part of the corresponding VTS, and then to perform normal regeneration for about 10 seconds from the first part. If it is larger than the preset time, the natural number value obtained by dividing the playback time of the corresponding VTS by the predetermined time is set as the number of times the contents of the VTS are introduced, and at the predetermined time interval for about one minute from the beginning of the VTS. Perform content introduction by playing at double speed.

That is, the microcomputer 50 generates a driving control signal to the motor and the motor driving unit 30 to cause the pickup and the actuator unit 10 to search for the beginning of the corresponding VTS, and then generates a control signal to generate a predetermined time, for example. For example, the double speed regeneration is performed for about one minute, and when the double speed regeneration for one minute is completed, the next section, that is, the predetermined time set at the beginning of the VTS, that is, the position after about twenty minutes, is performed. The double speed replay is executed. The double speed replay is executed every 20 minutes as many times as the detected content introduction execution frequency.

The microcomputer 50 switches to the stop mode and stops the operation of the digital video disc player when the contents introduction as described above for all VTSs is completed. As a result, according to the present invention, the microcomputer 50 reads the total number of VTSs and the playing time of each VTS for a predetermined disc, and then, in executing the content introduction function of the VTS, the content introduction section is first enlarged to VTS. For each VTS, a VTS having a relatively long play time is introduced several times at predetermined time intervals for double speed play, and general contents are introduced for a VTS having a relatively short play time.

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

A method of introducing contents of a digital video disc player according to the present invention shown in FIG. 2 will now be described with reference to FIG. 1.

In step S10, the microcomputer 50 determines whether a content introduction function key signal is input from the key input unit 40. When the content introduction function key signal is input in step S10, the microcomputer 50 generates a control signal in step S20 to read the number of all VTSs recorded on the disc, and in step S30, the VTS for content introduction. Set the number (VTSNo) to 1.

Thereafter, in step S40, the microcomputer 40 reads out the reproduction time of the n-th VTS for content introduction, and proceeds to step S50.

In operation S50, the microcomputer S50 determines whether the reproduction time of the N-th VTS is greater than the predetermined time by comparing the reproduction time of the N-th VTS with a predetermined time, for example, 20 minutes. If the playback time of the N-th VTS is greater than the predetermined time in step S50, the process proceeds to step S60, and if it is less than or equal to the predetermined time, the process proceeds to step S80.

First, when the process proceeds from step S50 to step S60, in step S60, the microcomputer 50 divides the playing time of the N-th VTS by a predetermined time and divides the natural number value among the divided values. In step S70, the microcomputer 50 generates a control signal to the motor and the motor driving unit 30 so that the pick-up and actuator unit 10 sets the starting position of the N-th VTS. After the search is performed, the speed play is performed for a predetermined time, that is, 1 minute from the position, and the speed play is performed at predetermined time intervals, that is, 20 minute intervals, for each predetermined number of times, and the flow proceeds to step S90. do.

On the other hand, if the process proceeds from step S50 to step S80, the microcomputer 50 generates a control signal in step S80 to allow the pickup and actuator unit 10 to search the beginning of the N-th VTS 10 Normal playback is performed for a second, and when step S80 is completed, the process proceeds to step S90.

In step S70 or step S80, the process proceeds to step S90. In step S90, the microcomputer 50 increases the number of the VTS for content introduction by 1 and proceeds to step S100, where the content introduction is performed. The number of executed VTSs is compared with the total number of VTSs read in step S20. If the number of VTSs whose contents introduction has been executed is greater than the number of all VTSs, the process proceeds to step S110 to switch to the stop mode. After the flow ends, otherwise, the flow returns to step S40 to repeat the flow until the contents introduction is completed for all VTSs.

As described above, according to the present invention, when performing a content introduction on a DVD in a digital video disc player, the content introduction section is largely divided into VTSs, the playback time of each VTS is read out, and the content introduction frequency is proportional to the time. Since setting the and executing the content introduction as many times, there is an effect that allows the user to recognize the introduced content more clearly.

Claims (1)

A method of introducing contents of a digital video disc player to sequentially play a predetermined digital video disc (DVD) on a predetermined time interval for a predetermined time period. The DVD is divided into regions by a predetermined number of video title sets (VTS) to record data. (A) reading the number of total VTSs recorded on the DVD and a reproduction time for each VTS when a content introduction function key signal is input; (B) If the read time of the read VTS is larger than the predetermined time, the natural number is set as the number of introduction sections of the value obtained by dividing the playback time by the predetermined time, and the playback speed is sequentially repeated for several minutes for each introduction section. Executing; (C) if the read time of the read VTS is less than or equal to a predetermined predetermined time, executing normal play for the VTS for 10 to 20 seconds from the beginning of the VTS; (D) If the steps (b) or (c) are completed, repeat steps (b) to (c) until the contents introduction function is completed for the number of VTSs read in step (a). Content introduction method of digital video disc player to include.