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:
Nov. 14, 1989
Filed:
Nov. 25, 1987
Naoki Maeda, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A binary coding circuit for binary coding the output of a photoelectric conversion element in an optical character reader. A parent signal generating circuit produces a binary coding parent signal and a threshold parent signal in response to the output of the photoelectric conversion element. The binary coding parent signal is applied to a binary coding signal amplifier circuit group inclusive of N amplifier circuits having different amplification factors and different offset levels, while the threshold parent signal is applied to a threshold signal amplifier circuit group having M amplifier circuits also having different amplification factors and different offset levels, N and M being positive integers. The outputs of each of the N and M amplifier circuits are individually compared by a comparison circuit group including L comparison circuits, where L is a positive integer satisfying MAX (M, N).ltoreq.L.ltoreq.MN.