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:
Jul. 27, 2004
Filed:
Dec. 22, 2000
Toshiro Kawata, San Diego, CA (US);
Other;
Abstract
A system and method for reducing power consumption in a digital display device in standby mode. The display device receives a voltage from a secondary power source in main mode but not in standby mode. An opto-coupler detects the voltage from the secondary power source. An integrated circuit that controls power to the display device is powered on in response to the opto-coupler detecting the voltage, and is otherwise powered off. The display device switches to main mode when the secondary power source is detected and to the standby mode when it is not. With use of the opto-coupler, it is not necessary for components of the display device to remain powered on in standby mode in order to detect the secondary power source and switch to main mode. Consequently, the digital display device consumes less than one watt of power in the standby power mode.