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:
Jun. 19, 2001
Filed:
Nov. 02, 1999
Douglas W. Constable, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
In a camera having a single battery cell power source, a flash apparatus is provided in combination with an optical data recording circuit in which energy to illuminate an LED illumination device in the recording circuit is derived from charging current through the flash capacitor generated by a “one touch” self oscillating charging circuit. A resistor element is connected in circuit with the flash capacitor across the charge voltage output terminals of the charging circuit. An oscillation start terminal of the charging circuit and the illumination device of the recording circuit are coupled through respective normally reverse biased diodes to the normally open contact of a flash synchronization switch. Closure of the synchronization switch forward biases the diodes to start the charging circuit and to connect the illumination device across the resistor element to activate the illumination device during the brief period the flash synchronization switch is closed.