Invention Grant
- Patent Title: Playback apparatus, playback method, and playback program
- Patent Title (中): 播放装置,播放方法和播放程序
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Application No.: US11516201Application Date: 2006-09-06
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Publication No.: US07881583B2Publication Date: 2011-02-01
- Inventor: Hitoshi Naito , Manabu Hatakenaka
- Applicant: Hitoshi Naito , Manabu Hatakenaka
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Frommer Lawrence & Haug LLP
- Agent William S. Frommer
- Priority: JP2005-260742 20050908
- Main IPC: H04N5/91
- IPC: H04N5/91 ; H04N7/26

Abstract:
A playback apparatus is capable of playing back video data at a variable speed ranging from a forward normal speed to a reverse normal speed, the video data having been encoded for compression through inter-frame compression based on predictive coding and recorded on a recording medium that allows random access. The playback apparatus includes a frame buffer configured to temporarily store video data of a plurality of frames; a target-pattern generator configured to generate a target pattern of the frame buffer for a target playback frame to be played back next; a comparator configured to compare a current state of the frame buffer with the target pattern; and a frame-buffer controller configured to extract a frame to be newly decoded and a frame no longer used in the current state of the frame buffer, on the basis of a result of the comparison by the comparator.
Public/Granted literature
- US20070058928A1 Playback apparatus, playback method, and playback program Public/Granted day:2007-03-15
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