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. 30, 1986
Filed:
Oct. 24, 1985
Osamu Kaite, Neyagawa, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A focus area change circuit is provided with a vertical comparator (50) which compares coincidence of count values of a vertical counter (45) with designated vertical positions of a focus area and a horizontal comparator (51) which compares count values of a horizontal counter 49 with designated horizontal positions. A sampling pulse generator (52) generates sampling pulses on the basis of vertical and horizontal comparison outputs, which are respectively expanded for generating expansion sampling pulses. A selection circuit (56) selects the sampling pulses or the expansion sampling pulses so that a sampling circuit (32) samples outputs of a video camera on the basis of the sampling pulses or the expansion sampling pulses as selected. A focus motor is controlled to maximize the sampling outputs. Thus, the sampling pulses or the expansion sampling pulses are selected in response to the state of the object of image formation, thereby to enable selection of the focus area.