The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1987
Filed:
Jun. 27, 1986
Kent A Byerly, Tucson, AZ (US);
Marvin E Feldhacker, Longmont, CO (US);
Duane E Grant, Boulder, CO (US);
IBM Corporation, Armonk, NY (US);
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.