Invention Grant
- Patent Title: Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
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Application No.: US13334818Application Date: 2011-12-22
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Publication No.: US08654857B2Publication Date: 2014-02-18
- Inventor: Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
- Applicant: Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Adeli LLP
- Main IPC: H04B1/66
- IPC: H04B1/66

Abstract:
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.
Public/Granted literature
- US20120093233A1 METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING Public/Granted day:2012-04-19
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