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:
Mar. 26, 2002
Filed:
Sep. 08, 2000
Toshiro Kawata, San Diego, CA (US);
Other;
Abstract
A system and method for reduced standby power consumption in a display device. In one embodiment, a circuit for power mode switching between a main mode and a standby mode of a display device is provided. In this embodiment, the circuit comprises a power supply unit coupled to a power source for receiving an input power signal and for generating output power signals when the display device is in the main mode. The circuit also includes an opto coupler coupled to a computer and responsive to a sync signal therefrom. The opto coupler is also coupled to the power supply unit for selectively sending an OFF signal thereto when the opto coupler does not detect the sync signal from the computer. Moreover, in this embodiment, the power supply unit shuts down and stops generating the output power signals in response to the OFF signal, thereby switching the display device to the standby mode. Thus, in this embodiment, no switching loss is incurred by the power supply unit and the standby power consumption of the circuit is minimized. In one embodiment, the power supply of a display device implemented in accordance with the present invention dissipates less than 1 watt of power during standby mode.