发明名称 |
METHOD AND APPARATUS FOR PREVENTING OVERFLOW AND UNDERFLOW OF AN ENCODER BUFFER IN A VIDEO COMPRESSION SYSTEM |
摘要 |
<p>The present invention is method and apparatus for preventing overflow and underflow of an encoder buffer in a video compression system. A virtual buffer is created in a rate controller to model the decoder buffer fullness (102). A sequence of bits is generated by an encoder (104). The encoder is controlled by the rate controller to prevent a decoder buffer underflow and overflow. Then, the sequence of bits is received by the encoder buffer to produce a bitstream (106). The bitstream corresponds to an instantaneous channel bitrate. The bitstream is transmitted from the encoder buffer to a decoder buffer following a delay (108). The delay is controlled by a rate controller to synchronize an encoder buffer fullness with a virtual buffer fullness (110). The synchronization prevents overflow and underflow of the encoder buffer.</p> |
申请公布号 |
EP0758509(B1) |
申请公布日期 |
2001.10.10 |
申请号 |
EP19950943824 |
申请日期 |
1995.12.14 |
申请人 |
MOTOROLA, INC. |
发明人 |
AUYEUNG, CHEUNG;LINDSLEY, BRETT, LOUIS;LEVINE, STEPHEN, NORMAN |
分类号 |
H04N7/32;H04N7/50;H04N21/234;H04N21/44;(IPC1-7):H04N1/00;H04N1/40;H04N7/24;H04N7/12 |
主分类号 |
H04N7/32 |
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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