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:
Jun. 17, 2014
Filed:
Sep. 22, 2011
Tatsuro Nakamura, Yokohama, JP;
Masaaki Takatsuji, Foster City, CA (US);
Atsushi Maruyama, Yokohama, JP;
Tatsuro Nakamura, Yokohama, JP;
Masaaki Takatsuji, Foster City, CA (US);
Atsushi Maruyama, Yokohama, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Abstract
A projection type image display device provided with an unauthorized use preventing system includes a button unit or a remote controller for operating the display device, a condition memory for storing information indicating at least one use condition in an authorized use of the display device, a password memory for storing a password for releasing a restriction on the use of the display device, a detector for detecting a used condition of the display device at a power on timing, and a processor for imposing restrictions on the use of the display device when the use condition detected by the detector does not match the at least one use condition indicated by the information stored in the condition memory and for relieving the restriction based upon input of the password.