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:
Aug. 09, 2016
Filed:
Apr. 09, 2014
Qualcomm Incorporated, San Diego, CA (US);
Kiet Tuan Chau, San Diego, CA (US);
Michael-David Nakayoshi Canoy, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Devices and methods for controlling a state of a load powered by an AC power source include a control unit having a memory, a processor coupled to the memory, a current sensor, a relay and a phase detector. The current sensor detects whether current is drawn by the load. The processor is configured to receive from the current sensor a state indication including whether current is drawn by the load. The processor may store the received state indication in the memory. The phase detector detects a zero-crossing point of the AC power source and provides that indication to the processor. In response to receiving the state indication, the processor is configured to activate the relay to change a phase of current to the load using the zero-crossing point detected by the phase detector in order to limit current flowing to the load in order to remotely turn off the load.