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:
Feb. 12, 2002
Filed:
Mar. 30, 1999
Applicant:
Inventor:
Mutsuya Furuhata, Hata-machi, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 2/100 ;
U.S. Cl.
CPC ...
G03B 2/100 ;
Abstract
In a projection display device which can be controlled by a remote controller, the remote controller includes a power supply switch button for turning on/off a power supply at a body of the projection display device, a zoom adjuster button for adjusting the zooming of a projection lens, and a focus adjuster button for adjusting the focusing of the projection lens. The projection display device body includes a restricting system which can restrict the adjusting functions of these buttons, so that inadvertent operation of any of these buttons does not affect the projection display device.