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:
Jan. 25, 1983
Filed:
May. 04, 1981
Yuji Ohkubo, Ohmiya, JP;
Nippon Kogaku K.K., Tokyo, JP;
Abstract
A device in a camera is provided with a light-emitting element driven by a signal current from an electronic flash device to emit light and indicate the ready-to-flash condition of the electronic flash device, a current control circuit series-connected to the light-emitting element to control a current flowing to the light-emitting element, an integrated circuit operative in response to the signal current from the electronic flash device, and a limiting circuit for detecting a voltage related to the combined voltage of the light-emitting element and the current control circuit and limiting an applied voltage applied to the integrated circuit so as to be below a predetermined value when said voltage exceeds a predetermined value.