Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1988-03-29
1991-07-09
Oberley, Alvin E.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340799, 340748, G09G 114
Patent
active
050309463
ABSTRACT:
An apparatus for the control of an access to a video memory comprises a memory width register having a content of a number of dot periods by which an access timing is determined to address a video memory. Therefore, an access timing is easily controlled dependent on a memory speed of the video memory only by changing the content of the memory width register. When the video memory is accessed during a display cycle of the video memory, video data may be stored in a buffer memory, and transferred from the buffer memory after the display cycle is finished.
REFERENCES:
patent: 4104624 (1978-08-01), Hamada
patent: 4485378 (1984-11-01), Matsui et al.
patent: 4660156 (1987-04-01), Bond et al.
patent: 4737780 (1988-04-01), Ishii
Artwick, "Microcomputer Displays, Graphics, and Animation", Prentice-Hall Inc., New Jersey, 1984, pp. 14-15.
Hudson Soft Co. Ltd.
Oberley Alvin E.
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