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. 10, 2007
Filed:
Mar. 21, 2005
Dong Huang, Hang-Zhou, CN;
Dong Huang, Hang-Zhou, CN;
Asia Optical Co., Inc., Taichung, TW;
Abstract
A speed detection method. A range finder acquires a specific number of distance measurement samples of an object during a period of time. A new unit of measurement larger than respective movement distances of the object in a first period and a second period is acquired. Rough measured distances Dand Drespectively corresponding to the locations of the object in the first period and the second period are calculated by comparing portions of the distance measurement samples corresponding to the first period and the second period utilizing the new unit of measurement. A scope is determined based on the Dand Dfor filtering the distance measurement samples. The speed of the object is calculated based the filtered distance measurement samples.