Invention Grant
US08098734B2 Video encoder, video decoder, video encoding method, video decoding method, and video encoding and decoding system
有权
视频编码器，视频解码器，视频编码方式，视频解码方式，视频编解码系统
- Patent Title: Video encoder, video decoder, video encoding method, video decoding method, and video encoding and decoding system
- Patent Title (中): 视频编码器，视频解码器，视频编码方式，视频解码方式，视频编解码系统
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Application No.: US12648837Application Date: 2009-12-29
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Publication No.: US08098734B2Publication Date: 2012-01-17
- Inventor: Shunichi Sekiguchi , Kohtaro Asai , Tokumichi Murakami , Hirofumi Nishikawa , Shinichi Kuroda , Yoshimi Isu , Yuri Hasegawa
- Applicant: Shunichi Sekiguchi , Kohtaro Asai , Tokumichi Murakami , Hirofumi Nishikawa , Shinichi Kuroda , Yoshimi Isu , Yuri Hasegawa
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Denki Kabushiki Kaisha
- Current Assignee: Mitsubishi Denki Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP.
- Priority: WOPCT/JP97/00834 19970317
- Main IPC: H04N7/12
- IPC: H04N7/12
Abstract:
A method and a video decoder for decoding an encoded bitstream of video data in a picture encoding and decoding system are disclosed. The video decoder includes a motion compensation unit for calculating a position for a sample image portion using an encoded bitstream of video data having a motion vector and rounding information. The calculated position of a sample image is rounded with the rounding information. The rounding information indicates the accuracy for rounding, and it is decoded from the bitstream. An image reconstruction unit reconstructs a decoded image portion of the video data from the sample image portion.
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