Computer graphics processing and selective visual display system – Plural display systems – Diverse systems
Patent
1991-10-30
1994-05-03
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Plural display systems
Diverse systems
345 98, 345185, G09G 300
Patent
active
053091680
ABSTRACT:
A CRT controller is operated in accordance with a basic clock for a panel display and repeats a wait operation in response to a wait signal produced by a panel timing controller, which causes a compulsory synchronization with the panel timing. A 1/2 frame buffer is also provided. Display data supplied by the CRT controller and display data read from the 1/2 frame buffer are alternately selected such that data is supplied in an order conforming to the panel display of a double screen type panel display. A display of the double screen type panel display is controlled in accordance with an application program directed to a CRT display without modifying the order of the display data produced by the CRT controller and without changing the timing data which has been set in the CRT controller. The 1/2 frame buffer may be a general-purpose memory which stores 1/2 frame and one line of the panel display data. A 1/2 frame buffer control circuit shifts a writing address of the 1/2 frame buffer by one line in a reverse direction to a direction of scanning for writing at the beginning of each new frame.
REFERENCES:
patent: 4716460 (1987-12-01), Benson et al.
patent: 4727363 (1988-02-01), Ishii
patent: 4742347 (1988-05-01), Arismendi
patent: 4760387 (1988-07-01), Ishii et al.
patent: 4779083 (1988-10-01), Ishii et al.
patent: 4816816 (1989-03-01), Usui
patent: 4845473 (1989-07-01), Matsuhashi et al.
patent: 4855728 (1989-08-01), Mano et al.
patent: 4860246 (1989-08-01), Inoue
patent: 4998100 (1991-03-01), Ishii
Itoh Shuhei
Kurata Mitsuhiro
Oberley Alvin E.
Saras Steven J.
Yamaha Corporation
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