Patent ID: 7280162
Filing Date: 2007-10-09
Classification: H04N

Abstract:
1. An apparatus for assisting in compressing video data in a computer system including a central processing unit and a system memory, comprising: a video input port configured to electrically couple to a video unit for receiving video data for a current video frame from streaming video data; a video input buffer coupled to the video input port for storing the video data from the video input port; a previous frame buffer for storing at least a portion of a previous video frame; an operation unit coupled to the video input buffer and the previous frame buffer for computing a difference frame from data from the video input buffer and data from the previous frame buffer; and a result buffer coupled to the operation unit, the result buffer further including a memory interface configured to couple with the system memory via a first bus independent of a second bus configured for coupling with the central processing unit via a north bridge chip, the result buffer for temporarily buffering the difference frame prior to storing the difference frame in the system memory.