Digital timing control system with memory look ahead

Details Digital timing control system with memory look ahead Digital timing control system with memory look ahead

1986-06-27

1987-09-08

Evans, Arthur G.

Boots, shoes, and leggings

358285, 350 66, H04N 127

Patent

active

046928774

ABSTRACT:
A pel timing clock compensates for the non-linear displacement profile of a resonant galvanometerscanner. A pel time counter is loaded with a count value and outputs a clock pulse after expiration of a delay serial determined by the count value. Each time the clock pulse is produced the pel time counter is reloaded. The various count values are accessed from a memory which is addressed by an address counter whose contents are also altered each time the clock pulse is produced. The memory stores a sequence of count values which, when used to load the pel time counter, produces the desired sequence of clock pulses to compensate for the non-linear displacement profile of the scanner.

REFERENCES:
patent: 4032888 (1977-06-01), Broyles et al.
patent: 4178064 (1979-12-01), Mrdjen
patent: 4482902 (1984-11-01), Bailey et al.
patent: 4541061 (1985-09-01), Schoon

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