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:
Jun. 19, 1984
Filed:
Aug. 30, 1982
William T Fearnside, Fishers, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Regarding any given light source in an array thereof, apparatus according to the invention comprises a shift register adapted to store bits corresponding to the ON times for the light source. The output of the shift register is applied to the light source and, when a ONE bit occurs at the shift register output concomitantly with the application to the light source of a pulse from a train thereof, the light source turns ON. The pulses in the train thereof are of binary weighted durations. By making the duty cycle of at least the 2.degree. pulse of the pulse train fairly low, and by employing a secondary pulse train to effect shifting of bits within the register simultaneously with, or before, the occurrence of the binary weighted pulses, the maximum shift frequency within the shift register--as opposed to that which would be required by prior art apparatus that employs a bit weighted clock for shifting within the register--is lessened appreciably.