Invention Grant
- Patent Title: Per multi-block partition breakpoint determining for hybrid variable length coding
- Patent Title (中): 每个多块分区断点确定混合变长编码
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Application No.: US11686860Application Date: 2007-03-15
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Publication No.: US08126062B2Publication Date: 2012-02-28
- Inventor: Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang , John A. Toebes
- Applicant: Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang , John A. Toebes
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Inventek
- Agent Dov Rosenfeld
- Main IPC: H04N7/12
- IPC: H04N7/12

Abstract:
A method, and apparatus, and logic encoded in one or more computer-readable tangible medium to carry out a method. The method is to code a plurality of ordered sequences of quantized transform coefficients of a corresponding plurality of blocks of image data using a hybrid coding method that includes determining a breakpoint location in the sequence between a low frequency region and a high frequency region; coding the low-frequency region using a selected low-frequency variable length coding method; coding the high-frequency region using a selected high-frequency variable length coding method; and coding the location of the breakpoint. The plurality of blocks include adjacent blocks and form a multi-block partition. The breakpoint location is determined as a function of the sequences of the multi-block partition such that different multi-block partitions can have different breakpoints.
Public/Granted literature
- US20080181296A1 PER MULTI-BLOCK PARTITION BREAKPOINT DETERMINING FOR HYBRID VARIABLE LENGTH CODING Public/Granted day:2008-07-31
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