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:
May. 01, 2012
Filed:
May. 21, 2009
Takahiro Sagawa, Chino, JP;
Takahiro Sagawa, Chino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An image output apparatus includes: a display device having a light modulation section which is divided into a plurality of channels; a level adjusting unit that is provided to each of the channels, adjusts a level of input signal, and outputs adjusted output signal to corresponding channel; a signal switching unit that switches between a video input signal and a first reference signal as the input signal of the level adjusting unit, for a predetermined period; an adjustment amount correcting unit that compares an output signal from each of the level adjusting units with a second reference signal for the predetermined period and corrects the adjustment amounts of the corresponding level adjusting units on the basis of the comparison results; and a connection state switching unit that outputs a control instruction to the display device to change a state of the channels to an open state for the predetermined period.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile