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:
Mar. 08, 2011
Filed:
Aug. 10, 2006
Masahiro Ohishi, Tokyo, JP;
Isao Minegishi, Tokyo, JP;
Masahiro Ohishi, Tokyo, JP;
Isao Minegishi, Tokyo, JP;
Topcon Corporation, Tokyo, JP;
Abstract
A surveying instrument and a surveying method for further minimizing a measurement error when the surveying instrument casts a light to a measuring object and receives the reflected light and measures a delay time or a distance. A reference pulse light r and a measurement pulse light oare received as a received light signal by a light receiving section, and a damping signal SU is formed from the received light signals r, o, and an amplification rate of a minute level signal in the proximity of a zero cross point Qof the damping signal SU is greatly amplified, and timing signals r', o′ are formed by using an amplified signal. Therefore, the measurement error can be minimized.