发明授权
US08995530B2 Moving image decoding apparatus, moving image coding apparatus, moving image decoding circuit, and moving image decoding method
有权
运动图像解码装置,运动图像编码装置,运动图像解码电路和运动图像解码方法
- 专利标题: Moving image decoding apparatus, moving image coding apparatus, moving image decoding circuit, and moving image decoding method
- 专利标题(中): 运动图像解码装置,运动图像编码装置,运动图像解码电路和运动图像解码方法
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申请号: US13255267申请日: 2011-03-02
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公开(公告)号: US08995530B2公开(公告)日: 2015-03-31
- 发明人: Hiroshi Amano , Takeshi Tanaka , Takashi Hashimoto , Yoshiteru Hayashi
- 申请人: Hiroshi Amano , Takeshi Tanaka , Takashi Hashimoto , Yoshiteru Hayashi
- 申请人地址: JP Osaka
- 专利权人: Panasonic Intellectual Property Management Co., Ltd.
- 当前专利权人: Panasonic Intellectual Property Management Co., Ltd.
- 当前专利权人地址: JP Osaka
- 优先权: JP2010-052370 20100309
- 国际申请: PCT/JP2011/001234 WO 20110302
- 国际公布: WO2011/111341 WO 20110915
- 主分类号: H04N7/12
- IPC分类号: H04N7/12 ; H04N11/02 ; H04N11/04 ; H04N19/43 ; H04N19/61 ; H04N19/117 ; H04N19/44
摘要:
A moving image decoding apparatus which enables reduction in the memory bandwidth and the memory access latency for the motion compensation filter coefficients for use in inter-picture prediction involving motion compensation using variable coefficients includes: a decoding unit (101) which decodes, from a coded stream, a plurality of motion compensation filter coefficients; a memory (109) for holding the motion compensation filter coefficients included in the coded stream; a filter coefficient storage unit (103) for holding at least one of the motion compensation filter coefficients which is required for the motion compensation; a motion compensation unit (107) which performs motion compensation using the required motion compensation filter coefficient held in the filter coefficient storage unit; and a filter coefficient transfer control unit (102) which writes, in the memory, the motion compensation filter coefficients decoded by the decoding unit, and transfers the required motion compensation filter coefficient from the memory to the filter coefficient storage unit, only when the required coefficient is not yet stored therein.
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