G - Physics – 09 – G
Patent
G - Physics
09
G
375/12
G09G 1/00 (2006.01) G06T 15/40 (2006.01) G09G 5/395 (2006.01)
Patent
CA 1181881
- 12 - METHOD AND APPARATUS FOR COMPILING DIGITAL IMAGE INFORMATION Abstract of the Disclosure Video data bus 8, video memory modules VMl-VMN, and bus arbitration circuits BACl-BACN interact to provide digital image information for display. Data processor 1 addresses the video memory modules via bus 2, in order to assign a priority value to picture element data stored in the video memory modules. Upon command of the data processor, a frame 5 or 300 of picture element data is serially compiled on bus 8. Contention between video memory modules for access to the video data bus is controlled by the bus arbitration circuits, the highest priority value of the picture element data gaining access. In one embodiment, the priority value represents the depth of a point of a solid object for display and/or the relative depth of picture element data comprising the object for display. The data processor may change the priority value associated with picture element data for display as well as the coordinates of data location in the display. Accordingly, textual characters having the highest priority and solid objects having a lesser priority may appear to move in front of one another on a background having the lowest priority value without interference in a sequence of frames of information for display.
402886
Kirby Eades Gale Baker
Western Electric Company Incorporated
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