Invention Grant
US09204161B2 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
有权
用于数字视频编码的可变精度画面间时序规范的方法和装置
- Patent Title: Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding
- Patent Title (中): 用于数字视频编码的可变精度画面间时序规范的方法和装置
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Application No.: US14462396Application Date: 2014-08-18
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Publication No.: US09204161B2Publication Date: 2015-12-01
- Inventor: Barin Geoffry Haskell , David William Singer , Adriana Dumitras , Atul Puri
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: US CA Cupertino
- Agency: Adeli LLP
- Main IPC: H04N7/12
- IPC: H04N7/12 ; H04N19/513 ; H04N19/61 ; H04N19/176 ; H04N19/102 ; G06T9/00 ; H04N19/503 ; H04N19/46 ; H04N19/51 ; H04N19/13 ; H04N19/91 ; H04N19/132 ; H04N19/43 ; H04N19/587 ; H04N19/577 ; H04N19/40

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
- US20150049815A1 METHOD AND APPARATUS FOR VARIABLE ACCURACY INTER-PICTURE TIMING SPECIFICATION FOR DIGITAL VIDEO ENCODING Public/Granted day:2015-02-19
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