DR. JOHN THOMAS CORRIGAN, DDS
Dentist in Bethesda, MD

2004024, Dec 9, 2004

Aug 8, 2003

10/637222

Stanley Kay - Rockville MD, US
John Corrigan - Chevy Chase MD, US
Dan Wendling - Dickerson MD, US
Mike Lohman - Germantown MD, US
Tariq Muhammad - Gaithersburg MD, US

HUGHES ELECTRONICS CORPORATION

H04L005/12

370/215000, 370/326000, 370/458000

A multi-modulation mode air interface frame format, and related methods for carrying traffic on the multi-modulation mode air frame format, including an overhead portion including a first plurality of time slots and a plurality of overhead bursts located within respective ones of the first plurality of time slots. The frame format also includes a traffic portion including a second plurality of time slots following the first plurality of time slots and a plurality of traffic bursts, wherein respective ones of the plurality of traffic bursts are located within one or more of the second plurality of time slots. And each of the plurality of traffic bursts are modulated using a respective one of a plurality of modulation modes. Furthermore, a multi-transport mode air interface frame format, and related methods, that includes an overhead portion as above and a traffic portion including a second plurality of time slots following the first plurality of time slots following the first plurality of time slots, and a plurality of traffic bursts located within one or more of the second plurality of time slots and a plurality of transport mode signals contained within respective ones of the plurality of traffic bursts.

2004026, Dec 30, 2004

May 12, 2004

10/843766

Mustafa Eroz - Germantown MD, US
John Corrigan - Chevy Chase MD, US
Walter Kepley - Gaithersburg MD, US
Kuriacose Joseph - Gaithersburg MD, US
Scott Casavant - Germantown MD, US

The DIRECTV Group, Inc. (formerly Hughes Electronics Corporation)

H04N007/173, H04N007/20, H04N007/18, H04N007/16, H04L012/28

725/116000, 725/146000, 725/093000, 725/089000, 725/063000, 725/134000, 725/142000, 725/074000, 725/080000

An approach is provided for distributing multi-media information from a satellite broadcast system. A hub receives a signal from the satellite broadcast system, wherein the signal represents video information and audio information associated with multiple broadcast channels. The hub centrally demodulates and decodes the received signal for distribution to one of a number of access point devices. According to one embodiment of the present invention, the decoded signal represents uncompressed video and audio information corresponding to one of the broadcast channels. The access point devices convert the received decoded signal for output respective displays (e.g., television sets). The hub can also be equipped with an interface to provide access to a public data network, such as the global Internet. Further, the hub can be supplied with a digital video recording capability.

5357513, Oct 18, 1994

Sep 9, 1993

8/118553

Stanley E. Kay - Rockville MD
John E. Corrigan - Chevy Chase MD
Daniel R. Wendling - Darnestown MD
Ashok D. Mehta - North Potomac MD
Michael I. Parr - San Diego CA

Hughes Aircraft Company - Los Angeles CA

H04J 316

370 953

A mobile telephone system multiplexes plural voice traffic channels on a single carrier using a TDMA protocol. The capacity of the mobile telephone system is increased by assigning voice traffic capacity, not on a conversation basis, but on a speech spurt basis. Accordingly, delays of undetermined duration may occur between subsequent information bursts which correspond to the transmission of speech spurts. An adjustment request regarding the power with which the information bursts are transmitted from a transmitting station to a receiving station is generated by detecting an information burst transmission at the receiving station, measuring the time which elapses following the transmission, and comparing the elapsed time with a predetermined threshold value. If the elapsed time exceeds the threshold, a further transmission is requested from the transmitting station notwithstanding the availability of any information to transmit. The power of the transmission received in response to the request is measured and a control message for requesting an adjustment to the transmission power level in response to the measurement is transmitted to the transmitting station.

5589837, Dec 31, 1996

Feb 6, 1995

8/384060

Mohammad Soleimani - Silver Spring MD
John E. Corrigan - Chevy Chase MD
Mohammad Bukhari - Germantown MD
David A. Roos - Boyds MD

Hughes Electronics - Los Angeles CA

H01Q 300

342359

An apparatus for positioning a directional antenna of a remote ground terminal which transmits and receives signals to and from a satellite via the antenna. The apparatus includes a signal generator for producing a frequency variable reference signal having a variable duty cycle, and a controller which operates to analyze the signals received from the satellite and to vary the duty cycle of the reference signal in accordance with an identification tag forming part of the received signals. The apparatus further includes a detector which receives the reference signal and produces an antenna pointing signal having an average amplitude proportional to the duty cycle of the reference signal. The controller commands the signal generator to produce a reference signal having a first duty cycle when a signal having an identification tag not corresponding to a designated central hub station is received by the antenna, and a reference signal having a second duty cycle when a signal having an identification tag corresponding to the designated central hub station is received by the antenna. The reference signal having the first duty cycle causes the average amplitude of the antenna pointing signal to equal a first value, while a reference signal having the second duty cycle causes the average amplitude of the antenna pointing signal to equal a second value.

5790601, Aug 4, 1998

Sep 5, 1995

8/523309

John E. Corrigan - Chevy Chase MD
Mohammad Soleimani - Abbasabad Tehron, IR
Osamu Yamamoto - Tokyo, JP
Susumu Otani - Tokyo, JP

Hughes Electronics - Los Angeles CA

H03K 706

375302

A remote ground terminal transmitter for transmitting a modulated data signal having a constant envelope amplitude. The remote ground terminal transmitter comprises a source of data signals, a modulator for providing a carrier signal, receiving a data signal from the source of data signals, and modulating the carrier signal with the received data signal so as to produce a constant envelope minimum shift key modulation signal. The transmitter further comprises a power amplifier which operates in the saturation mode to amplify the modulated carrier signal produced by the modulator to the desired power level.

5703881, Dec 30, 1997

Mar 9, 1993

8/028502

Stanley E. Kay - Rockville MD
Pradeep Kaul - Darnestown MD
Michael I. Parr - San Diego CA
Graham Avis - San Diego CA
John E. Corrigan - Chevy Chase MD
Daniel Wendling - Darnestown MD
Ashok D. Mehta - North Potomac MD

Hughes Electronics - Los Angeles CA

H04J 317

370468

A multisubscriber unit is disclosed for use of in a digital cellular communication system to communicate with a base transceiver station and eventually to switched telephone network. The multisubscriber unit connects to a plurality of individual subscriber telephones. It includes a plurality of upconverters, modulators, downconverters, demodulators speech compressors, speech decompressors, and voice activity detectors that are assigned to a subscriber telephone upon detection of an off hook signal from the telephone. Preferably, upon the detection of data to be transmitted, to channel allocation is requested from a pool of time division multiple access channels in a digital speech interpolation pool.

5995812, Nov 30, 1999

Sep 1, 1995

8/523105

Mohammad Soleimani - Rockville MD
John E. Corrigan - Chevy Chase MD

Hughes Electronics Corporation - El Segundo CA

H04B 7155

455119

A frequency generation device for a satellite communication system composed of a central hub station and a number of remote units. The remote units contain a single synthesizer located in an indoor unit. In this invention, the indoor-located synthesizer is a direct digital synthesizer which modulates the baseband signal and conveys the modulated signal to an outdoor unit for communication between the remote unit and the central hub. In the outdoor unit, the signal is converted directly by a fixed number to a Ku band frequency and transmitted to the central hub.

5633873, May 27, 1997

Sep 13, 1995

8/528182

Stanley E. Kay - Rockville MD
Pradeep Kaul - Darnestown MD
Michael I. Parr - San Diego CA
Graham Avis - San Diego CA
John E. Corrigan - Chevy Chase MD
Daniel Wendling - Darnestown MD
Ashok D. Mehta - North Potomac MD

Hughes Electronics - Los Angeles CA

H04L 1200

370336

A digital cellular communication system in which fixed subscribers and mobile subscribers share base transceiver stations, base station controllers and mobile switching centers to communicate with the switched telephone network. Mobile subscribers communicate using any cellular radio protocol, while the fixed subscribers communicate via a multi-subscriber unit (MSU) using the inventive air interface. The MSU system uses digital speech interpolation to transmit speech spurts between subscribers and the switched telephone network. Preferably, time division multiple access channels in a digital speech interpolation pool are allocated and deallocated on a speech spurt basis.