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:
Dec. 29, 2009
Filed:
Jun. 25, 2007
Applicants:
Johan Johnson, Vallentuna, SE;
Anneli Utterback, Rimbo, SE;
Inventors:
Johan Johnson, Vallentuna, SE;
Anneli Utterback, Rimbo, SE;
Assignee:
Trimble AB, Danderyd, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 19/18 (2006.01); G01C 3/08 (2006.01); G11C 1/00 (2006.01); G01B 11/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A surveying instrument performs tracking of a target by controlling an orientation of a measuring unit relative to the target in two different angular directions. The control in one angular direction is based on detected light intensities which are modulated according to a first time pattern, and control of the orientation in the other angular direction is based on detected light intensities modulated according to a second time pattern just different from the first time pattern.