发明名称 |
Transcoder controlling generated codes of an output stream to a target bit rate |
摘要 |
A transcoder calculates a reference conversion factor on the basis of a ratio between a total target bit rate of a whole second stream and an total input bit rate of a whole first stream and calculates a coefficient of variation from the total target bit rate of the whole second stream and an average output bit rate of a converted second stream in the N period. Next, a quantization step conversion factor in the next (N+1) period is calculated by adding the coefficient of variation to the reference conversion factor. Then, a quantization step value of a second stream in the (N+1) period is calculated by multiplying a quantization step value of a first stream in the (N+1) period by the quantization step conversion factor.
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申请公布号 |
US7714751(B2) |
申请公布日期 |
2010.05.11 |
申请号 |
US20080144098 |
申请日期 |
2008.06.23 |
申请人 |
MEGACHIPS CORPORATION;NTT ELECTRONICS CORPORATION |
发明人 |
HASEGAWA HIROMU;YANAGIDA MIYUKI |
分类号 |
H03M7/00 |
主分类号 |
H03M7/00 |
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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