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:
Oct. 11, 1983
Filed:
Jan. 15, 1982
Nobuhiko Terui, Tokyo, JP;
Sakuji Watanabe, Warabi, JP;
Nippon Kogaku K.K., Tokyo, JP;
Abstract
An automatic focus detecting apparatus of a camera comprises a focus detecting unit for receiving the light from an object to be photographed and producing a focus detection output, a driving circuit responsive to the focus detection output to effect at least one of the driving of a phototaking lens and focus condition display, an object brightness detecting unit for producing a brightness detection output corresponding to the brightness of the object, means for producing a time count starting signal, a timer circuit adapted to start time count in response to the time count starting signal and produce a blocking signal in response to the brightness detection output for a short time if the brightness is high or for a long time if the brightness is low, and a blocking circuit for preventing the driving circuit from responding to the focus detection output during the time the blocking signal is produced.