Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2007-09-18
2007-09-18
Rao, Andy (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240250
Reexamination Certificate
active
10170999
ABSTRACT:
Disclosed is a loop filtering method in a video coder enabling to provide an easy real-time processing by reducing a calculation quantity of a video coder in realizing a H.26L standard system and increase a video quality by removing a blocking and a ringing phenomenon of a compression moving picture in accordance with a coded block pattern, a quantization step size, and a motion vector size. The present invention includes the steps of determining a strength of a block to be processed in accordance with a coded pattern and a quantization step size of a first macro block(block1, block2) constituted by 4×4 block unit, carrying out a first loop filtering on the first macro block(block1, blockk2) in accordance with the determined strength, and carrying out a second loop filtering on a block located at a boundary region of a second macro block constituted by 16×16 block unit so as to remove a blocking existing at the boundary region of the second macro block. And, the first and second loop filterings are carried out in directions of horizontal and vertical axes for the first and second macro blocks, respectively.
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Translation of Korean Office Action dated Jul. 18, 2005.
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Harness & Dickey & Pierce P.L.C.
LG Electronics Inc.
Rao Andy
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