Kevin A Chin

US Patent:

6943728, Sep 13, 2005

Filed:

Jul 2, 2003

Appl. No.:

10/610544

Inventors:

Shaowei Han - Palo Alto CA, US
Kevin Xinhua Chin - Palo Alto CA, US

Assignee:

Thales North America, Inc. - Santa Clara CA

International Classification:

G01S005/14

US Classification:

34235702, 34235704

Abstract:

A method of, apparatus for, and computer-readable medium for rapid, real time kinematics determination requiring lowered information transmission for position updates than traditional RTK systems. Position signals are received from a base station and roving system and a compressed position signal is received from the base station. A position estimate using an integrated method is determined using the received position signals from the base station and the roving system and the compressed position signal from the base station. Ambiguity resolution of the position estimate is enhanced by applying a quality control procedure using derived validation criteria. A second position estimate is derived based on the enhanced ambiguity resolution. Because of the use of the compressed position signal smaller transmissions may be performed at a more rapid rate providing a higher position update rate.

US Patent:

7042390, May 9, 2006

Filed:

Jul 2, 2003

Appl. No.:

10/610541

Inventors:

Shaowei Han - Palo Alto CA, US
Kevin Xinhua Chin - Palo Alto CA, US

Assignee:

Thales North America, Inc. - Santa Clara CA

International Classification:

G01S 5/14

US Classification:

34235702, 34235704

Abstract:

A method of and computer-readable medium containing instructions for high accuracy, reliable position determination. A high precision GPS-RTK system using the present novel techniques is initialized instantaneously or near instantaneously. To improve the computational efficiency and to improve the reliability of the procedure, advances in data functional and stochastic modeling, validation criteria, adaptation and system design were achieved. A position estimate using an integrated method is determined. Ambiguity resolution of the position estimate is enhanced by applying a quality control procedure using derived validation criteria. A second position estimate based on the enhanced ambiguity resolution is derived.

US Patent:

7148843, Dec 12, 2006

Filed:

Jul 2, 2003

Appl. No.:

10/610541

Inventors:

Shaowei Han - Palo Alto CA, US
Kevin Xinhua Chin - Palo Alto CA, US

Assignee:

Thales North America, Inc. - Santa Clara CA

International Classification:

G01S 5/14

US Classification:

34235702, 34235704

Abstract:

A method of and computer-readable medium containing instructions for high accuracy, reliable position determination. A high precision GPS-RTK system using the present novel techniques is initialized instantaneously or near instantaneously. To improve the computational efficiency and to improve the reliability of the procedure, advances in data functional and stochastic modeling, validation criteria, adaptation and system design were achieved. A position estimate using an integrated method is determined. Ambiguity resolution of the position estimate is enhanced by applying a quality control procedure using derived validation criteria. A second position estimate based on the enhanced ambiguity resolution is derived.

US Patent:

7750979, Jul 6, 2010

Filed:

Oct 26, 2001

Appl. No.:

10/045929

Inventors:

Chien-Hsin Lin - Sunnyvale CA, US
Kevin Chin - Cupertino CA, US

Assignee:

Trident Mircosystems (Far East) Ltd. - Grand Cayman

International Classification:

H04N 5/14
H04N 9/64

US Classification:

348576, 348571, 715788

Abstract:

A pixel-data processing circuit delivers a fixed number of pixels to a video processing stage using an irregular sampling pattern that is defined by a variably-definable sampling window. In one example embodiment directed to processing an input stream of pixels corresponding to an array of video pixels, the window size is selected from one of various options for sampling subsets of the array as a two-dimensional window that spans the pixels in the array. A sampling-window is used such that the window size is a multiple of the sampling-window size and the sampling-window size defines the fixed number of pixels. The processing includes concurrently moving pixel data from the input stream into a first set of line buffers with the pixels stored in the first set of line buffers including pixels for the established window size, prefetching the stored pixels from the first set of line buffers into a second set of line buffers, the second set of line buffers being sufficiently long to store at least the pixels corresponding to the established sampling-window size, and fetching the fixed number of pixels from the second set of line buffers. In various applications, in addition to flexibility, the present invention realizes enhanced throughput.

US Patent:

8270965, Sep 18, 2012

Filed:

Apr 5, 2007

Appl. No.:

11/697263

Inventors:

Paramvir Bahl - Issaquah WA, US
Ranveer Chandra - Kirkland WA, US
Kevin Chin - Bellevue WA, US
Alastair Wolman - Seattle WA, US
Yuvraj Agarwal - San Diego CA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04M 3/00

US Classification:

455419, 455 412, 4554321, 455442, 4555521

Abstract:

Techniques for increasing the battery life on a mobile device by decreasing the energy consumption of the mobile device's wireless fidelity (Wi-Fi) interface are described. In one embodiment, the mobile device's Wi-Fi interface is automatically disabled when the device is not engaged in a voice over internet protocol (VoIP) call via the Wi-Fi interface. When a VoIP call is initiated on the device, or when the device receives a wake up call from a server via its Cellular interface, the Wi-Fi interface is automatically enabled. Using its Wi-Fi interface, the mobile device then connects to an IP-based network via a Wi-Fi access point. The server then initiates a direct call, wherein VoIP technology is used by the mobile device, between the mobile device and a VoIP calling device.

US Patent:

8358975, Jan 22, 2013

Filed:

Dec 26, 2007

Appl. No.:

11/964173

Inventors:

Paramvir Bahl - Issaquah WA, US
Alastair Wolman - Seattle WA, US
Ranveer Chandra - Kirkland WA, US
Kevin Chin - Bellevue WA, US
Yuvraj Agarwal - San Diego CA, US

Assignee:

Microsoft Corporation - Redmond WA

International Classification:

H04B 5/00

US Classification:

455 412, 455522, 455415, 455574, 370328, 370338

Abstract:

Techniques for increasing the battery life on a mobile device by decreasing the energy consumption of the mobile device's wireless fidelity (Wi-Fi) interface are described. In one embodiment, the mobile device's Wi-Fi interface is automatically disabled when the device is not engaged. When the device receives a wake up call from a server via its Cellular interface, the Wi-Fi interface is enabled if the device answers the wake up call and the Wi-Fi interface is available. Using its Wi-Fi interface, the mobile device then connects to an IP-based network via a Wi-Fi access point.

US Patent:

20100153459, Jun 17, 2010

Filed:

Dec 16, 2008

Appl. No.:

12/335552

Inventors:

Audrey Yung-Ch'In Sousa - Seattle WA, US
Arturo Ortiz Asbun - Seattle WA, US
Robert Paul St. Pierre - Redmond WA, US
Charles B. Schweizer - Bellevue WA, US
Kevin A. Chin - Bellevue WA, US
Shawn Michael Brown - Sammamish WA, US

Assignee:

MICROSOFT CORPORATION - Redmond WA

International Classification:

G06F 17/30

US Classification:

707797, 707E17009

Abstract:

Populating a contact entry with selected entity information based on an identifier associated with a call (e.g., a telephone call, VoIP call, text message, electronic mail message, or any other communication). As the call is detected, entity information for the identifier (e.g., a telephone number, VoIP address, MAC address, etc.) is generated. The entity information is filtered based on a category of the entity information, user preferences, location of a computing device (e.g., mobile telephone) of the user, or other filtering criteria. The filtered entity information is associated with the contact entry for the identifier, thereby enhancing the contact entry while reducing typing on the computing device. In some embodiments, additional information such as advertisements for a competitor of the entity are provided to the user.

US Patent:

20120117478, May 10, 2012

Filed:

Nov 9, 2010

Appl. No.:

12/942423

Inventors:

Kiran Kumar Vadde - Sammamish WA, US
Kevin A. Chin - Bellevue WA, US
Harish Srinivasan - Sammamish WA, US
Omar M. Maabreh - Bellevue WA, US

Assignee:

MICROSOFT CORPORATION - Redmond WA

International Classification:

G06F 15/16
G06F 3/01

US Classification:

715736, 709224

Abstract:

Defining and applying policies to manage data traffic including data transmitted and/or received by each of a plurality of applications executing on a computing device. The data traffic is monitored per application and attributes are defined for the monitored data traffic to enable the user to evaluate the data traffic for each application. Usage patterns are determined based on the monitored data traffic and the attributes to create one or more policies. The policies are applied to prevent each application from exceeding a corresponding data usage limit defined by the policies.