Communications: electrical – Systems – Portable self-contained
Patent
1976-12-13
1978-09-05
Curtis, Marshall M.
Communications: electrical
Systems
Portable self-contained
340337, 358 93, 358133, 273 85G, G06F 314
Patent
active
041124227
ABSTRACT:
A method and apparatus for generating moving objects for a video game display. Common apparatus including a microprocessor with RAM provides vertical motion for all objects and separate horizontal position counting hardware horizontal motion for each object. The microprocessor operating on a horizontal line pair basis drives a parallel to serial converter which stores one eight bit line portion of the object to be displayed which in turn is connected to a shift register. When the converted data is read out to the video display by action of the appropriate horizontal position hardware, it is recirculated to provide a repeat on the next horizontal line of the identical data. An effective one line moving resolution is obtained by utilizing another shift register for a one line delay by means of a switch which is set by a latch driven by the microprocessor.
REFERENCES:
patent: 3293614 (1966-12-01), Fenimore et al.
patent: 3422420 (1969-01-01), Clark
patent: 3713135 (1973-01-01), Lazecki
patent: 3982063 (1976-09-01), Brown et al.
patent: 4013828 (1977-03-01), Judice
patent: 4026555 (1977-05-01), Kirschner et al.
Mayer Steven T.
Milner Ronald E.
Atari Inc.
Curtis Marshall M.
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