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Digit audio-visual player and playing controlling method thereof

A video and audio playback and playback control technology, applied in data recording, digital recording/reproduction, television, etc., can solve the problems of digital audio and video files being inconvenient, unable to play, and not including system layer information, etc.

Inactive Publication Date: 2010-10-06
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when playing digital audio and video files in the form of files, only simple playback functions can be used, such as reverse, fast forward, slow playback, etc., and cannot be played at any point in time
This is because digital video files in the form of files do not include system layer information, so they cannot be played at any point in time
Like this, will cause the inconvenience that the viewer watches the digital audio-visual file of file form
Moreover, subtitles (subtitles) are simply displayed as audio and video playback, and subtitles cannot be used to further promote interactivity.

Method used

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  • Digit audio-visual player and playing controlling method thereof
  • Digit audio-visual player and playing controlling method thereof
  • Digit audio-visual player and playing controlling method thereof

Examples

Experimental program
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Embodiment Construction

[0027] When playing digital audio and video files in the form of files, in order to support the function of playing at any point in time, it is necessary to analyze the audio and video information and offset (offset) of the file at the beginning of playback to establish a "video-audio index table (video-audio index)" . The video and audio index table records the displacement of the synchronous audio and video corresponding to a certain time point. A larger index table can record information at more time points.

[0028] In order to use subtitles as the time basis for playback control, subtitles must first be parsed into meaningful text content. The parsed text content also includes the playback start and end time. The subtitle time to be played is transmitted to the digital audio-visual playback device as the starting and ending point of the audio-visual playback.

[0029] In order to be able to use subtitles for interactive purposes, it is necessary to understand subtitle ...

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Abstract

The invention is a digital video-audio playback device and the playback control method thereof, using user-provided specific time point or key word as playback reference of digital video-audio file. If captions exist in image form, it converts image captions into character contents; or if the captions are stored in character code form, it resolves the needed contents. The character contents resolved / converted can compare with the key word, resolving proper caption corresponding time which can act as start / stop point for setting video-audio playback; or the comparative result can be used to analyze relativity between video-audio file and key word.

Description

technical field [0001] The present invention relates to a digital audio-visual playback device and its playback method, and in particular to a method for supporting any point in time by establishing an "audio-audio index table" when playing a file-based digital audio-visual file A playing digital audio-visual playing device and a playing method thereof. Background technique [0002] Optical discs have the advantages of large storage capacity, easy storage, long shelf life, low cost, and data is not easy to be damaged. This has gradually become one of the mainstream of modern storage media (storage medium). Take a digital versatile disc (Digital Versatile Disk, DVD) as an example, which includes video, audio, subtitle and other video and audio playback data and playback control information. [0003] As far as home entertainment is concerned, digital audio-visual players (such as DVD players) can now be used to play DVD movies or digital audio-visual files in the form of fixe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/76H04N5/91G11B20/10G11B19/00
Inventor 曾永丰陈昱志邱变成
Owner SUNPLUS TECH CO LTD