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:
Sep. 03, 2019
Filed:
Dec. 03, 2014
Applicant:
Nec Display Solutions, Ltd., Tokyo, JP;
Inventors:
Michio Yoshino, Tokyo, JP;
Masakazu Kobayashi, Tokyo, JP;
Assignee:
NEC DISPLAY SOLUTIONS, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 21/41 (2011.01); H04N 17/00 (2006.01); G09G 5/00 (2006.01); H04N 9/31 (2006.01); G06Q 30/06 (2012.01);
U.S. Cl.
CPC ...
H04N 17/004 (2013.01); G09G 5/00 (2013.01); G09G 5/003 (2013.01); G09G 5/006 (2013.01); H04N 9/3182 (2013.01); H04N 9/3191 (2013.01); H04N 9/3194 (2013.01); H04N 21/4122 (2013.01); G06Q 30/0645 (2013.01); G09G 2330/022 (2013.01); G09G 2330/026 (2013.01); G09G 2330/027 (2013.01); G09G 2370/22 (2013.01);
Abstract
Provided is a display device that has a usage validity period and confirms that the device is within the usage validity period when it is used, and can be improved in usefulness and can be used quickly, as well as a usage management method and program for the display device. The display device includes: a real-time clock; and, a control unit that, upon receiving a video display-ON signal for turning on video display under the condition that the status of the real-time clock is invalid, displays video corresponding to an input video signal.