International Business Machines Corporation

Marvin E Feldhacker

Duane E Grant

Kent A Byerly

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.

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Longmont, CO, United States of America

Marvin E Feldhacker