Microcomputer for use with video display

Details Microcomputer for use with video display Microcomputer for use with video display

1977-04-11

1979-01-23

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 944

Patent

active

041363590

ABSTRACT:
A microcomputer including a video generator and timing means which provides color and high resolution graphics on a standard, raster scanned, cathode ray tube is disclosed. A horizontal synchronization counter is synchronized at an odd-submultiple of the color subcarrier reference frequency. A "delayed" count is employed in the horizontal synchronization counter to compensate for color subcarrier phase reversals between lines for the non-interlaced fields. This permits vertically aligned color graphics without substantially altering the standard horizontal synchronization frequency. Video color signals are generated directly from digital signals by employing a recirculating shift register.

REFERENCES:
patent: 3581011 (1971-05-01), Ward et al.

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