发明名称 |
Video encoder and method of operating the same |
摘要 |
The present invention provides a video encoder and a method of operating the video encoder to implement high-precision bit rate control by reducing the risk of overflow of an intermediate buffer coupled between a quantizer and an encoding section. The intermediate buffer supplies a selection control signal indicative of whether the amount of stored data is large or small to a selector. If the selection control signal indicates large, the selector outputs an estimated code amount from a code amount estimation section to the rate controller. If the selection control signal indicates small, the selector outputs an actual code amount from the encoding section to the rate controller. The rate controller calculates the quantization scale according to the output of the selector and feedbacks the calculated quantization scale to the quantizer. The quantizer adjusts the quantizer scale. |
申请公布号 |
EP2858365(B1) |
申请公布日期 |
2016.12.14 |
申请号 |
EP20140187252 |
申请日期 |
2014.10.01 |
申请人 |
Renesas Electronics Corporation |
发明人 |
Mochizuki, Seiji;Shibayama, Tetsuya |
分类号 |
H04N19/115;H04N19/124;H04N19/146;H04N19/149;H04N19/152;H04N19/176 |
主分类号 |
H04N19/115 |
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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