Liang Chen Cheng

US Patent:

20060209964, Sep 21, 2006

Filed:

Mar 21, 2005

Appl. No.:

11/087080

Inventors:

Liang Cheng - Irvine CA, US
Magda El Zarki - Irvine CA, US

International Classification:

H04N 11/04

US Classification:

375240240

Abstract:

The field of the invention relates to system and methods for video compression, and more particularly to systems and methods for video compression for low bit rate and low latency video communications. In one embodiment, a video communication system includes a first electronic device enabled to receive and display video data and a second electronic device configured to transmit video data to the first electronic device and be communicatively accessible by the first electronic device. The video data includes a plurality of frames, each frame having a plurality of macroblocks. The second electronic device includes a video encoder having a sub-system configured to progressively refresh the macroblocks of the frames in substantially uniform segments, determine whether there are macroblocks encoded with data from an unrefreshed macroblock in the segment last refreshed, and refresh the macroblocks encoded with data from an unrefreshed macroblock in the segment last refreshed.