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Data processing device

一种数据处理装置、数据处理的技术，应用在数据记录、数字记录/再现、电视等方向

Inactive Publication Date: 2006-01-18
GK BRIDGE 1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the reproduction end time of the audio data and the video data obtained at the time when the reading of the data is completed is different, and the reproduction of the audio is often completed before the reproduction of the video, so there is a problem.

Method used

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Embodiment Construction

[0053] In the following, the data structure of the data stream will be described first, and then the data processing device using the data stream as the processing object according to this embodiment will be described.

[0054] image 3 Shown is the data structure of an MPEG2 program stream 30 conforming to the DVD video recorder standard (this stream will be referred to as "data stream 30" hereinafter).

[0055] The data stream 30 includes a plurality of video objects (Video OBject; VOB) #1, #2, . . . , #k. For example, assuming that the data stream 30 is a content shot by a camcorder, each VOB stores the animation data generated by one video recording operation from the time the user starts video recording to the end of video recording.

[0056] Each VOB includes a plurality of VOB units (Video OBject unit; VOBU) #1, #2, . . . , #n. Each VOBU is a data unit including video data within a range of 0.4 seconds to 1 second mainly as a video playback time.

[0057] Below, with...

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Abstract

A data processing device includes: a parser for receiving a data stream and isolating from the data stream, video data containing a plurality of pictures, first time information defining the reproduction time of each picture, audio data containing data of a plurality of frames, and second time information defining the reproduction time of each frame; an output section for outputting the video data and the audio data for reproducing the plurality of pictures and the plurality of frames; a reference register for counting the time which has elapsed from a predetermined reference time; a first difference register for calculating a difference value between the first time information on each picture and the time that has elapsed upon output of each picture and holding it as a first difference value; a second difference register for calculating a difference value between the second time information on each frame and the time that has elapsed upon output of each frame and storing it as a second difference value; and a control section for controlling output of the video data according to the size of the first difference value with respect to the second difference value.

Description

technical field [0001] The present invention relates to a technique for reproducing audio and video after decoding compressed audio data and video data. Background technique [0002] In recent years, people have been actively developing a method of compressing and encoding various data of long-term image (video) and sound (audio), suppressing the amount of data, and recording it on a recording medium. In the International Organization for Standardization (ISO), the standardization of audio and video coding methods of the MPEG (Moving Picture Image Coding Experts Group) of the International Electrotechnical Committee (IEC) is being promoted. For example, in "ISO / IEC 13818-2", the video compression method is specified; in "ISO / IEC 13818-3", the audio compression method is specified; in "ISO / IEC13818-1", the way of combining them. The method listed last is widely known as an MPEG system standard. Utilizing this compression encoding technology, it is possible to record a long...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/93H04N5/92G11B20/10G11B27/10H04N5/85H04N5/91H04N7/173H04N9/804H04N9/806H04N21/426H04N21/43H04N21/438
CPCH04N5/85G11B27/105G11B27/10H04N21/4307H04N9/8063G11B2220/2562H04N21/2368H04N21/4341H04N9/8042H04N21/42646H04N21/43072H04N5/92
Inventor 佐伯慎一
Owner GK BRIDGE 1