发明授权
US07564901B2 Method and apparatus for providing rate control for panel-based real-time video encoder
有权
为基于面板的实时视频编码器提供速率控制的方法和装置
- 专利标题: Method and apparatus for providing rate control for panel-based real-time video encoder
- 专利标题(中): 为基于面板的实时视频编码器提供速率控制的方法和装置
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申请号: US11539786申请日: 2006-10-09
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公开(公告)号: US07564901B2公开(公告)日: 2009-07-21
- 发明人: Limin Wang , Jian Zhou
- 申请人: Limin Wang , Jian Zhou
- 申请人地址: US PA Horsham
- 专利权人: General Instrument Corporation
- 当前专利权人: General Instrument Corporation
- 当前专利权人地址: US PA Horsham
- 代理商 Stewart M. Wiener
- 主分类号: H04N7/18
- IPC分类号: H04N7/18
摘要:
A method and apparatus for providing multi-panel rate control of real-time video digital encoders such as an MPEG or H series including the steps of bit allocation, rate control and adaptive quantization. Bit allocation assigns a target number of bits per group of pictures, and per picture of each type. Rate control adjusts the quantization parameter at the MB level to achieve that target number of bits per picture. Adaptive quantization further modulates the parameter per MB using local activity measure. Bit allocation and rate control can be implemented through a central control unit, or a central digital signal processor (DSP) while adaptive quantization can be implemented at the local panel.
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