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. 31, 1984
Filed:
Dec. 21, 1981
Applicant:
Inventors:
Kiziro Suzuki, Hamura, JP;
Yoshiharu Takahashi, Hachioji, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354430 ;
Abstract
A camera has a taking lens and a charge-coupled device that detects light through the lens. A warning signal generating circuit includes a capacitor, comparator and an LED or buzzer actuated by the output from the comparator. The reference voltage associated with the capacitor is variable to provide warning time limits commensurate with taking lenses of different focal length.