Sprite coincidence detector indicating sprite group

Details Sprite coincidence detector indicating sprite group Sprite coincidence detector indicating sprite group

1993-08-06

1996-09-03

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

345199, 345114, G09G 502

Patent

active

055528040

ABSTRACT:
A video display processor and video display system which overlays mobile patterns called sprites over a background. Each sprite includes an indication of a predetermined sprite group. A sprite coincidence detector generates an indication of each sprite group involved when at least one pixel of a sprite overlaps at least one pixel of another sprite. This indication is preferably formed by setting corresponding bits in a sprite coincidence register. The sprite coincidence register may be read by a host processor via a processor port. Reading the sprite coincidence register resets all bits permitting sprite group indication upon detection of further sprite coincidences.

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Karl Guttag, "The TMS 9918 Video Display Processor: A Brief Overview", 1980 IEEE, pp. 219-223.

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