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:
Apr. 27, 2010
Filed:
Mar. 04, 2005
Goro Obinata, Aichi, JP;
Kiyoshi Oka, Ibaraki, JP;
Hiroki Miura, Aichi, JP;
Nobuhiko Moriyama, Aichi, JP;
Goro Obinata, Aichi, JP;
Kiyoshi Oka, Ibaraki, JP;
Hiroki Miura, Aichi, JP;
Nobuhiko Moriyama, Aichi, JP;
Nagoya Industrial Science Research Institute, Aichi, JP;
Abstract
An optical tactile sensor has a touch pad and a CCD camera for imaging behavior of the touch pad. A CPU processes image information from the CCD camera, extracts information on the size, shape, and center of gravity of a contact region, and extracts information on the size of a fixation region. The CPU obtains a normal force from the size of the contact region, obtains a tangential force from the shape of the contact region and the center of gravity of the contact region, and obtains a friction coefficient from the ratio of the size of the fixation region to the size of the contact region.