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:
Apr. 10, 2012
Filed:
May. 22, 2006
Toshifumi Yokoyama, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Shin-ichi Kadowaki, Hyogo, JP;
Kiminori Mizuuchi, Osaka, JP;
Hiroyuki Furuya, Nara, JP;
Kazuhisa Yamamoto, Osaka, JP;
Toshifumi Yokoyama, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Shin-ichi Kadowaki, Hyogo, JP;
Kiminori Mizuuchi, Osaka, JP;
Hiroyuki Furuya, Nara, JP;
Kazuhisa Yamamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A display device () of the present invention has a first switch () and a second switch () on an upper surface of its casing, and includes a control circuit () for controlling the first switch () and the second switch () and a light source () inside the casing. The control circuit () performs control so that the light source () is turned on when the second switch () is pressed after a predetermined period of time has passed from when the first switch () was pressed. Thereby, the display device () of the present invention prevents entering of a person into a projection area before projection of video, and controls inadvertent start-up.