Computer graphics processing and selective visual display system – Computer graphics display memory system – Frame buffer
Reexamination Certificate
2008-07-22
2008-07-22
Zimmerman, Mark (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics display memory system
Frame buffer
C348S384100, C380S200000
Reexamination Certificate
active
11209897
ABSTRACT:
A remote management controller may include a capture engine and a processor. The capture engine may be configured to: obtain a slice of video data output from a video graphics controller; calculate at least one value correlative to the slice of video data; determine whether any portion of the slice has been locked; and if any portion has not been locked and if the calculated value for such portion of the slice differs from a value for a previously obtained corresponding portion, move the portion to a virtual screen buffer, update a table associated with the virtual screen buffer with the calculated value, and modify a change table to indicate that the portion has changed. The processor may be configured to: read the change table to determine whether any portion of video data in the virtual screen buffer has changed; and if any portion has changed, lock any changed portion from being accessed by the capture engine, access the changed portion from the virtual screen buffer, and process the changed portion in the virtual screen buffer for transmission to a remote system.
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Dykes Don
Emerson Theodore F.
Heinrich David F.
Noonan Robert L.
Xu Kevin K
Zimmerman Mark
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