Invention Grant
- Patent Title: Video decoder and video decoding method
- Patent Title (中): 视频解码器和视频解码方式
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Application No.: US11386685Application Date: 2006-03-23
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Publication No.: US08170105B2Publication Date: 2012-05-01
- 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: H04B1/66
- IPC: H04B1/66 ; 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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