Christopher R Stephens

US Patent:

20190386513, Dec 19, 2019

Filed:

Apr 15, 2019

Appl. No.:

16/384765

Inventors:

- San Jose CA, US
Gopinath AKKINEPALLY - Milpitas CA, US
Aihua LEE - City Saratoga CA, US
Tao QI - City San Diego CA, US
Christopher STEPHENS - San Jose CA, US
Gustavo MEHAS - Mercer Island WA, US
Nicholaus SMITH - La Mesa CA, US
Chan Young JEONG - San Jose CA, US
Changjae KIM - San Jose CA, US
Hojun SHIN - Palo Alto CA, US

International Classification:

H02J 50/10
H02J 50/80
G06F 21/32
H04W 12/06
B60R 25/20
H02J 7/02

Abstract:

A wireless power transmitter and a receiver device can communicate through a bi-directional communications channel that uses the wireless power signal transmitted from the transmitter to the receiver. Embodiments of the present invention can provide firmware/software updates to wireless power transmitter, vehicle ignition, security lock systems, data back-up and storage systems, charging node statistics and updates, E-commerce applications, contextual awareness applications, interactive user experiences, and applications to wearables and other devices

US Patent:

20180138752, May 17, 2018

Filed:

Nov 16, 2017

Appl. No.:

15/815315

Inventors:

- San Jose CA, US
Christopher STEPHENS - San Jose CA, US

International Classification:

H02J 50/12
G01R 33/022

Abstract:

A wireless power receiver is presented that allows for positioning of the receiver with respect to a transmitter coil. The receiver can base alignment information on the wireless power received from the transmit coil. In some embodiments, a secondary detector such as a beacon can be used to provide a direction towards alignment. The power receiver may include a receiver coil, a power detector configured to determine a power level received by the receiver coil, and a processor coupled to receive the power level from the power detector and provide an indication of the power level.

US Patent:

20170256980, Sep 7, 2017

Filed:

May 24, 2017

Appl. No.:

15/604466

Inventors:

- San Jose CA, US
Jianbin HAO - San Jose CA, US
Zhuyan SHAO - San Jose CA, US
Christopher STEPHENS - San Jose CA, US

International Classification:

H02J 7/02
H02J 50/90
H02J 50/80
H02J 50/12
H02J 50/60

Abstract:

In accordance with aspects of the present invention, a first wireless power enabled device includes a transceiver and control logic. The transceiver includes a plurality of switches coupled in a full-bridge configuration with a resonant tank circuit. The control logic is configured to detect a presence of a second wireless power enabled device, establish a trusted relationship with the second wireless power enabled device, determine an operating mode of the first wireless power enabled device selected from a transmit mode or a receive mode, and drive the plurality of switches to operate the resonant tank circuit in the determined operating mode. The first wireless power enabled device may further include a memory that stores a copy of a first key associated with the first wireless power enabled device and a copy of a second key associated with the second wireless power enabled device