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:
Jan. 29, 2008
Filed:
Sep. 02, 2005
Takashi Kamimura, Kanagawa, JP;
Takehito Hiyoshi, Kanagawa, JP;
Junichi Onodera, Kanagawa, JP;
Fujitsu General Limited, Kanagawa-Ken, JP;
Abstract
To provide a projector having a configuration for reflecting correction by lens shift on keystone correction and preferentially using a lens shift function. The projector includes a keystone correcting portion for applying keystone correction to an input image signal, a display device for displaying an image in accordance with an output signal of the keystone correcting portion, a projection lens for projecting the image displayed on the display device to a screen, a lens driving portion for moving the projection lens and outputting the position information on the projection lens, and a control portion for outputting parameters used for keystone correction and the position information on the lens, in which the control portion determines whether the moving distance of the lens reaches a limit value, receives a keystone adjusting signal for changing the parameters used for keystone correction and receives a keystone adjusting signal for changing parameters used for keystone correction and outputs the signal only when the moving distance reaches the limit value.