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:
Sep. 22, 2009
Filed:
Oct. 11, 2005
Torsten Wipiejewski, Hksar, CN;
Torsten Wipiejewski, Hksar, CN;
Hong Kong Applied Science and Technology Research Institute Co., Ltd., Hong Kong SAR, CN;
Abstract
A distance measuring apparatus includes an optical transmitter having an optical source for transmitting modulated optical signals towards a remote object, and an optical receiver for detecting the modulated optical signals upon reflection from the remote object. The optical receiver includes a photo-detector which is configured for gated detection of optical signals by gating signals applied thereto. The gating signals are arranged to be in a constant time or phase relationship with the modulated optical signals. The optical receiver calculates the distance of the remote object with reference to delay information between transmitted and detected optical signals, with the delay information being determined by gated detection of optical signals at the photo-detector.