- 专利标题: Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
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申请号: US13339899申请日: 2011-12-29
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公开(公告)号: US08737468B2公开(公告)日: 2014-05-27
- 发明人: Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
- 申请人: Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Adeli LLP
- 主分类号: H04N7/12
- IPC分类号: H04N7/12
摘要:
A method and apparatus for variable accuracy inter-picture timing specification for digital video encoding is disclosed. Specifically, the present invention discloses a system that allows the relative timing of nearby video pictures to be encoded in a very efficient manner. In one embodiment, the display time difference between a current video picture and a nearby video picture is determined. The display time difference is then encoded into a digital representation of the video picture. In a preferred embodiment, the nearby video picture is the most recently transmitted stored picture. For coding efficiency, the display time difference may be encoded using a variable length coding system or arithmetic coding. In an alternate embodiment, the display time difference is encoded as a power of two to reduce the number of bits transmitted.
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