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:
Jul. 15, 1986
Filed:
Dec. 09, 1983
Omron Tateisi Electronics Co., Kyoto, JP;
Abstract
A pattern analyzer includes a sensor (19) for picking up an image of a pattern at a plurality of sampling points and for producing a shade signal representing the depth of shade at each sampling point. The sampled shade signals are temporarily stored in a memory (23) and, at the same time, are classified into different shade depths by a histogram forming circuit (30, 31, 32 and 33). The result of the classification is such that an amount of classified shade signals reaches a peak at two different shade depths. A threshold level determining circuit (34, 35, 36 and 37) is provided for determining a threshold level of shade depth between the two different shade depths. Also, a comparator (38, 39, 40 and 41) is provided for comparing the shade signals stored in the memory with the threshold level and for producing a 1-bit binary signal for each shade signal.