Patent ID: 7817157

Claim:
A remote management controller comprising: a capture engine configured to obtain only selected single slices of video data corresponding to selected portions of a video image frame output from a video graphics controller, the video image frame including portions which are viewable and portions which are non-viewable via a monitor, each of the selected single slices comprising a plurality of data blocks and the obtained selected singled slices together comprising less than all slices of the video image frame, to store each selected single slice of video data, and to calculate at least one value for each block of the selected single slices of video data; and a processor configured to retrieve each selected single slice of video data stored by the capture engine and to process a data block for transmission to a remote system, including data blocks corresponding to non-viewable portions of the video image frame, only if the at least one value for the data block indicates a change relative to an at least one calculated value for a corresponding data block of a previously obtained single slice of video data corresponding to a same portion of a previous video image frame.