发明名称 |
PLAYBACK METHOD AND APPARATUS FOR REPRODUCING ENCODED DATA IN A REVERSE PLAYBACK OPERATION |
摘要 |
Encoded data is reversely reproduced by decoding each picture only once and using only as many frame memory sections as are needed in a normal playback operation. A picture header detector detects a picture header from data read out from a video code buffer to identify the type of picture. The picture type information controls a picture data selecting circuit for selecting frames of I and P pictures equal in number to the number of frame memory sections in a frame memory bank. The selected frames are supplied to an inverse VLC circuit to be decoded, starting at the head of a GOP with an I picture. The decoded I and P pictures are stored in the frame memory bank and transmitted to a display unit, starting with the temporally most recent picture and reading backward.
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申请公布号 |
CA2168419(A1) |
申请公布日期 |
1996.08.01 |
申请号 |
CA19962168419 |
申请日期 |
1996.01.30 |
申请人 |
SONY CORPORATION |
发明人 |
KAWAMURA, MAKOTO;FUJINAMI, YASUSHI;YONEMITSU, JUN;NAKAGAWA, TOMIHIRO |
分类号 |
H04N5/92;G11B20/10;H03M7/36;H04N5/783;H04N5/85;H04N9/804;H04N9/877;(IPC1-7):H04N7/50 |
主分类号 |
H04N5/92 |
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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