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:
Dec. 20, 1994
Filed:
Nov. 13, 1992
Applicant:
Inventors:
David G Decker, Sunnyvale, CA (US);
William G Howell, Half Moon Bay, CA (US);
Assignee:
Daiblo Research Corporation, Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M / ; H04M / ;
U.S. Cl.
CPC ...
363 49 ; 323901 ; 375-8 ; 379 98 ;
Abstract
An apparatus and a method for using a serial data line to turn on an electrical device are disclosed. Energy is extracted from a data signal on an asynchronous serial data line using a charge pump. The extracted energy is used by a power supply switching circuit to turn power on. Once turned on, power is kept on by a keepalive circuit. A shutdown signal causes the power to be turned off.