发明名称 |
IMAGE INFORMATION CODING DEVICE AND CODING METHOD FOR RANDOM ACCESS OF CODED IMAGE FRAMES |
摘要 |
<p>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.</p> |
申请公布号 |
EP2117237(A1) |
申请公布日期 |
2009.11.11 |
申请号 |
EP20080711977 |
申请日期 |
2008.02.26 |
申请人 |
SONY CORPORATION |
发明人 |
TANAKA, JUNICHI;SATO, KAZUSHI;YAGASAKI, YOICHI |
分类号 |
H04N1/00;H04N19/11;H04N5/92;H04N9/804;H04N19/136;H04N19/423;H04N19/44;H04N19/50;H04N19/503;H04N19/51;H04N19/573;H04N19/58;H04N19/593;H04N19/61;H04N19/625;H04N19/82;H04N19/91 |
主分类号 |
H04N1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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