David S Cheng

US Patent:

6336612, Jan 8, 2002

Filed:

Feb 13, 2001

Appl. No.:

09/783862

Inventors:

Frank Taormina - El Segundo CA
Donald C.D. Chang - Thousand Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
William W. Mayfield - Torrance CA
John Novak, III - West Hills CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

B64G 100

US Classification:

244158R

Abstract:

A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

US Patent:

6460808, Oct 8, 2002

Filed:

Oct 23, 2001

Appl. No.:

10/008675

Inventors:

Frank Taormina - El Segundo CA
Donald C. D. Chang - Thousands Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
William W. Mayfield - Torrance CA
John Novak, III - West Hills CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

B64G 100

US Classification:

244158R

Abstract:

A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

US Patent:

6643268, Nov 4, 2003

Filed:

Aug 23, 1999

Appl. No.:

09/379168

Inventors:

Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
Kenneth N. Gibson - Redondo Beach CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04L 1228

US Classification:

370254, 370216

Abstract:

A method ( ) for identifying re-routing path solutions for signals within a switch network ( ). The path solutions are subject to special constraints that provide the most desired solution for a user. The method applies an algorithm that works by transforming a global problem ( ) into many individual sub-problems ( ). The algorithm then solves the individual sub-problems ( ) systematically according to desired constraints until the global solution is met ( ). The method finds a unique state for each switch such that the overall requirements of the system are met.

US Patent:

6766987, Jul 27, 2004

Filed:

Aug 28, 2002

Appl. No.:

10/230424

Inventors:

Frank Taormina - El Segundo CA
Donald C. D. Chang - Thousand Oaks CA
Kar W. Yung - Torrance CA
David C. Cheng - Palos Verdes Estates CA
William W. Mayfield - Torrance CA
John Novak, III - West Hills CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

B46G 100

US Classification:

244158R, 701226

Abstract:

A satellite communication system has a first deployment of a plurality of satellites deployed in a medium earth orbit and two later deployments of a plurality of satellites deployed in the medium earth orbit. The first deployment is spaced so that the second deployment may be easily deployed and interleaved into the first deployment. A ground terminal is used for communicating with the satellites in the first and second deployments.

US Patent:

7488877, Feb 10, 2009

Filed:

Feb 18, 2007

Appl. No.:

11/676297

Inventors:

David K. Cheng - Costa Mesa CA, US
Diana C. Liu - Costa Mesa CA, US

International Classification:

G10D 1/02

US Classification:

84280, 84278

Abstract:

An adjustable and collapsible shoulder rest for a violin or like instrument that has an elongated single piece body with a first and second end being vertically extended at both ends by vertical guards which protect and prevent injury to the user when attempting to collapse the left and right gripping members. Vertical guards may be positioned at a fixed tilted angle to improve and train users to apply proper playing posture. Left and right gripping members have flexible separated gripping appendages that increase the surface area gripping of the instrument body and reduce or negate completely, any unwanted movement or slippage of the instrument body. Left and right gripping members are securely attached to left and right collapsible inserts by stems.

US Patent:

D599707, Sep 8, 2009

Filed:

Nov 14, 2008

Appl. No.:

29/327927

Inventors:

David Cheng - Long Beach CA, US
Jason Matthew Wilbur - Pasadena CA, US

Assignee:

Honda Motor Co., Ltd. - Tokyo

International Classification:

1208

US Classification:

D12 92

US Patent:

7752233, Jul 6, 2010

Filed:

Mar 29, 2007

Appl. No.:

11/731008

Inventors:

Santosh Vempala - Atlanta GA, US
Grant Wang - Mt. View CA, US
Ravi Kannan - Hamden CT, US
David Cheng - New York NY, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA
Yale University - New Haven CT

International Classification:

G06F 17/30

US Classification:

707802, 707790

Abstract:

Described are techniques for clustering a data set of objects. Divide phase processing is performed to partition the data set into two or more partitions forming a hierarchy of the objects. Merge phase processing may be performing using the hierarchy to determine one or more disjoint clusters of objects of the data set. Optional preprocessing may be performed to determine weights for one or more features of an object.

US Patent:

D636014, Apr 12, 2011

Filed:

Jul 31, 2006

Appl. No.:

29/248143

Inventors:

David Cheng - Costa Mesa CA, US

International Classification:

1703

US Classification:

D17 20