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. 04, 2012
Filed:
Jun. 25, 2009
Ken Nishioka, Daito, JP;
Atsuya Hirano, Daito, JP;
Kenji Nagashima, Daito, JP;
Manabu Murayama, Daito, JP;
Ken Nishioka, Daito, JP;
Atsuya Hirano, Daito, JP;
Kenji Nagashima, Daito, JP;
Manabu Murayama, Daito, JP;
Funai Electric Co., Ltd., Osaka, JP;
Abstract
A detection surface of an optical detector is divided into regions C, E, F, G, and H. The optical detector outputs detection signals corresponding to the amounts of light incident on the respective regions. A position detection controller calculates an image projection position based on timing at which a laser beam is incident on region C. A laser control circuit adjusts the intensity of the laser beam emitted by a laser based on laser beam intensities detected in regions E to H arranged around region C.