Robert L Lau

US Patent:

8526884, Sep 3, 2013

Filed:

Aug 19, 2011

Appl. No.:

13/214052

Inventors:

Andrew D. Price - Santa Clara CA, US
Varada Gopalakrishnan - Cupertino CA, US
Robert D. Lau - Dublin CA, US

Assignee:

Amazon Technologies, Inc. - Reno NV

International Classification:

H04B 7/00

US Classification:

455 412, 455419, 455420, 4555531

Abstract:

Computing devices can utilize various low power wakeup transceivers in order to control functional states of various components of those devices. Each transceiver can broadcast a beacon including appropriate information, which can be received by any other device with a transceiver that is within a propagation range of the beacon. A transceiver receiving the beacon can cause the received beacon to be analyzed by appropriate decision logic, which can determine any appropriate functionality to be activated or otherwise contacted in response to the beacon. In at least some embodiments, the beacon can cause another type of communication channel to be activated to establish communications with a device from which the beacon was received. In this way, the communications channel can be established without having to leave the channel active or manually activate that channel.

US Patent:

46957723, Sep 22, 1987

Filed:

Jul 3, 1985

Appl. No.:

6/752266

Inventors:

Robert S. Lau - San Jose CA
Roy E. Murphy - Watsonville CA
Robert G. Quick - Ben Lomond CA

Assignee:

Azuray Inc. - Scotts Valley CA

International Classification:

H01J 2956

US Classification:

315370

Abstract:

There is described a picture quality control system for use with a multi-beam cathode ray tube raster scan display device. The display device generates an image comprising a multiplicity of parallel, nonoverlaping bands of pixels, each band of pixels comprising a set of parallel lines of pixels. The control system includes a linearity correction circuit and a dynamic detwist correction circuit. The linearity correction circuit adjusts the distance between neighboring bands of pixels. The dynamic detwist correction circuit adjusts the relative positions of the electron beams generated by the cathode ray tube. The control system further includes a dynamic astigmatism correction circuit and a dynamic focus correction circuit for correcting astigmatism and focus imperfections in the image generated by said cathode ray tube. A dynamic size correction circuit adjusts the size of the pixels generated by the electron beams. The display is organized as an array of tiles.

US Patent:

20190038224, Feb 7, 2019

Filed:

Aug 3, 2017

Appl. No.:

15/668515

Inventors:

- Santa Clara CA, US
Robert Lau - Danville CA, US

International Classification:

A61B 5/00
H04W 52/02

Abstract:

Wearable devices having pressure activated biometric monitoring systems and related methods are disclosed. An example wearable device includes a housing including a biometric sensor to detect physiological information of a user. The wearable device includes a circuit to electrically couple the biometric sensor and a power source of the wearable device. A spring contact is positioned adjacent the biometric sensor and is to be oriented toward a user. The spring contact is movably coupled relative to the housing. The spring contact is to close the circuit to activate the biometric sensor when the wearable device is strapped to the user and the spring contact engages the user. The spring contact is to open the circuit to deactivate the biometric sensor when the wearable device is removed from the user to reduce energy drain of the power source by the biometric sensor.