Arthur Z Wang

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:

6339707, Jan 15, 2002

Filed:

Sep 14, 1999

Appl. No.:

09/395903

Inventors:

S. Lynne Wainfan - Long Beach CA
Ellen K. Wesel - Santa Monica CA
Michael S. Pavloff - Redondo Beach CA
Arthur W. Wang - Cypress CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04Q 720

US Classification:

455427, 455 121, 455 133, 455429

Abstract:

A satellite-based communications system operating at high data rates includes a plurality of satellites each having uplink and downlink antennas for transmitting and receiving a plurality of signal utilizing a plurality of spot beams to and from a plurality of coverage areas at a predetermined range of frequencies. The system also includes a plurality of user terminals for transmitting and receiving signals to and from the plurality of communications satellites at the predetermined range of frequencies and at one of the first plurality of data rates. Each of the user terminals having a steerable antenna for tracking relative movement of each of the user terminals with respect to each of the plurality of communications satellites are for tracking movement of each of the plurality of communications satellites in order to maintain communications with the plurality of communications satellite.

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:

6678520, Jan 13, 2004

Filed:

Jul 1, 1999

Appl. No.:

09/346444

Inventors:

Arthur W. Wang - Buena Park CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04Q 720

US Classification:

455428, 455430, 455 131, 455436

Abstract:

A method and apparatus for mitigating communications interference between satellite communications systems in different orbits is disclosed. The method comprises the steps of evaluating a geometrical relationship between a second ground station and the satellites in the second satellite constellation, and directing communications between the second ground station and the second satellite according to the evaluated geometrical relationship. In one embodiment communications are handed over from a first satellite to another satellite when the first satellite is no longer at the highest elevation angle of visible satellites. In another embodiment, handover occurs when the first satellite drops below a minimum elevation angle.

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:

7136620, Nov 14, 2006

Filed:

Nov 19, 2003

Appl. No.:

10/718024

Inventors:

Arthur W. Wang - Buena Park CA, US

Assignee:

The DirecTV Group, Inc. - El Segundo CA

International Classification:

H04B 7/185
H04Q 7/20

US Classification:

455 131, 455428, 455430, 4554521, 4555621

Abstract:

A method and apparatus for mitigating communications interference between satellite communications systems in different orbits is disclosed. The method comprises the steps of evaluating a geometrical relationship between a second ground station and the satellites in the second satellite constellation, and directing communications between the second ground station and the second satellite according to the evaluated geometrical relationship. In one embodiment communications are handed over from a first satellite to another satellite when the first satellite is no longer at the highest elevation angle of visible satellites. In another embodiment, handover occurs when the first satellite drops below a minimum elevation angle.

US Patent:

7165365, Jan 23, 2007

Filed:

Apr 3, 2000

Appl. No.:

09/542243

Inventors:

Arthur W. Wang - Buena Park CA, US

Assignee:

The DirecTV Group, Inc. - El Segundo CA

International Classification:

E04C 2/52

US Classification:

522201, 434878, 342359, 343766

Abstract:

A satellite ready building comprises a plurality of studs and satellite wires positioned adjacent to the studs having a first termination and a second termination. A connector is coupled to the second termination of the wires. The first termination is coupled through the roof or the siding of the building. Drywall is installed in the house after the wires are installed. The first termination may be installed in a radome positioned on the roof of the building.

US Patent:

7184761, Feb 27, 2007

Filed:

Mar 27, 2000

Appl. No.:

09/536275

Inventors:

Arthur W. Wang - Buena Park CA, US

Assignee:

The DirecTV Group, Inc. - El Segundo CA

International Classification:

H04Q 7/20

US Classification:

455427, 455 12, 455429, 455430, 455431, 342372

Abstract:

A communication system has a plurality of ground stations for communicating communication signal to a plurality of satellites located in an inclined elliptical sub-geosynchronous orbit with respect to the earth. The plurality of satellites operate in a service area in a synchronized manner to provide continuous coverage to the service area. The satellites generate a plurality of beams with variable beamwidths to obtain a substantially uniform cell size covering the service area. A user terminal within the service area receives communication signals from the satellite.