DISPLAY DEVICE, USAGE MANAGEMENT METHOD AND PROGRAM OF A DISPLAY DEVICE
First Claim
Patent Images
1. A display device comprising:
- a real-time clock; and
,a control unit that, when receiving a video display-ON signal for turning on video display under the condition that the status of the teal-time clock is invalid, displays video corresponding to an input video signal.
2 Assignments
0 Petitions
Accused Products
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.
-
Citations
12 Claims
-
1. A display device comprising:
a real-time clock; and
,a control unit that, when receiving a video display-ON signal for turning on video display under the condition that the status of the teal-time clock is invalid, displays video corresponding to an input video signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
11. A usage management method implemented in a display device including a real-time clock, wherein
when receiving a video display-ON signal for turning on video display under the condition that the status of the real-time clock is invalid, a control unit displays video corresponding to an input video signal.
-
12. A machine-readable media which is non-transitory tangible media for use in a display device including a real-time clock, causing a control unit to enable display of video corresponding to an input video signal when the control unit receives a video display-ON signal for turning on video display under the condition that the status of the real-time clock is invalid.
Specification