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. 24, 2003
Filed:
Jan. 19, 2001
Yasuhiro Miwa, Saitama, JP;
Tatsuo Saito, Saitama, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
In a rangefinder apparatus for projecting a light beam toward a target object a number of times; detecting light of the light beam reflected from the target object, and successively integrating output signals corresponding to the distance to the target object to carry out rangefinding; a voltage of an integrating capacitor in a rangefinding routine is detected, and the rangefinding routine is forcibly terminated if the voltage of the integrating capacitor is out of a preset range. Since the rangefinding routine is forcibly terminated if the voltage of the integrating capacitor in the rangefinding routine is outside of the preset range, malfunctions of a signal processing IC can be detected.