发明授权
- 专利标题: Picture information coding device and coding method
- 专利标题(中): 图像信息编码装置及编码方法
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申请号: US12524733申请日: 2008-02-26
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公开(公告)号: US08711931B2公开(公告)日: 2014-04-29
- 发明人: Junichi Tanaka , Kazushi Sato , Yoichi Yagasaki
- 申请人: Junichi Tanaka , Kazushi Sato , Yoichi Yagasaki
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2007-050778 20070228
- 国际申请: PCT/JP2008/053248 WO 20080226
- 国际公布: WO2008/105389 WO 20080904
- 主分类号: H04N7/18
- IPC分类号: H04N7/18 ; H04N11/02 ; H04N11/04
摘要:
In a picture information coding device for outputting picture compression information based on an AVC encoding scheme, optimum reference relationships in a GOP structure including hierarchical B pictures can be obtained and random access from an I picture that is not an instantaneous decoding refresh picture can be performed.When multiple-frame prediction is performed, with a memory management control operation command generation unit (13), a reference B picture that exists between a picture and a P picture or I picture is registered as a long-term reference picture using a memory management control operation command to manage a picture in a decoded picture buffer. The reference B picture is placed as the first in a reference picture list using a reference picture list reordering command when a B picture that exists between the P picture or I picture and the reference B picture is processed. The long-term reference picture in the decoded picture buffer is set to be a non-reference picture by setting the maximum value of a long-term frame index to [0] using a memory management control operation command when the P picture or I picture is processed. Random access from the I picture that is not an instantaneous decoding refresh picture is performed.
公开/授权文献
- US20100118944A1 PICTURE INFORMATION CODING DEVICE AND CODING METHOD 公开/授权日:2010-05-13