Synchronization of image frame update

Details Synchronization of image frame update Synchronization of image frame update

2008-01-29

2008-01-29

Nguyen, Jimmy H. (Department: 2629)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Frame buffer

C345S204000

Reexamination Certificate

active

10837314

ABSTRACT:
A method of updating image frames to a display screen. A display system comprises a display screen, a frame memory for buffering the image frames prior to a transfer to the display screen, a display interface for receiving the image data into the frame memory, a separate controller for inputting the image data in the frame memory, and a display driver for controlling the display system. Image data are transferred by means of the separate controller to the display screen, after which a synchronization signal is fed back from the image frame updated to the display screen. A limiter register is used to specify a moment when image frame update in the frame memory is prevented. The separate controller is controlled to prevent image frame input in the frame memory as long as the counter value is within the limits of the limit value of the limiter register.

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patent: 1 217 602 (2002-06-01), None
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