John Thomas Corrigan

US Patent:

20040246891, Dec 9, 2004

Filed:

Aug 8, 2003

Appl. No.:

10/637222

Inventors:

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

Assignee:

HUGHES ELECTRONICS CORPORATION

International Classification:

H04L005/12

US Classification:

370/215000, 370/326000, 370/458000

Abstract:

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.

US Patent:

20040268408, Dec 30, 2004

Filed:

May 12, 2004

Appl. No.:

10/843766

Inventors:

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

Assignee:

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

International Classification:

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

US Classification:

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

Abstract:

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.

US Patent:

52991989, Mar 29, 1994

Filed:

Dec 6, 1990

Appl. No.:

7/622232

Inventors:

Stanley E. Kay - Rockville MD
John E. Corrigan - Washington DC
Daniel Wendling - Darnstown MD
Ashok Mehta - Gaithersburg MD
Michael Parr - San Diego CA

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

H04J 316

US Classification:

370 953

Abstract:

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. In order to avoid compromising the voice transmission capacity, control signals (for the allocation and deallocation of both forward and reverse traffic channels) are sent using multiple diversity, i. e. both time and frequency. In addition, to increase the number of available control channels, a control channel comprises a sub-divided portion of an otherwise equivalent voice traffic slot. For reverse allocation requests, which are transmitted over a contention access channel, power diversity is used in addition to time and frequency diversity.

US Patent:

44894139, Dec 18, 1984

Filed:

Jul 19, 1982

Appl. No.:

6/399573

Inventors:

Robert L. Richmond - Fairfax VA
John E. Corrigan - Washington DC
Paul F. Wyar - Arlington VA

Assignee:

M/A-COM DCC, Inc. - Germantown MD

International Classification:

H04B 150

US Classification:

370 30

Abstract:

Apparatus for maintaining a transmit radio signal frequency in a predetermined frequency relationship with a received radio signal. A common voltage controlled frequency source serves as an Lo signal generator for both the receiver and transmitter. A reference frequency oscillator is phase compared with a receive IF signal to derive a control voltage for the voltage controlled frequency source. The resulting phase lock loop provides transmit signal frequency control with respect to a received signal.

US Patent:

56782284, Oct 14, 1997

Filed:

Mar 6, 1995

Appl. No.:

8/398842

Inventors:

Mohammad Soleimani - Tehran, IR
John E. Corrigan - Chevy Chase MD

Assignee:

Hughes Aircraft Co. - Los Angeles CA

International Classification:

H04H 104
H04B 116

US Classification:

455343

Abstract:

A remote ground terminal for transmitting a modulated data signal to a satellite. The remote ground terminal comprises a source of data signals, a demodulator for receiving a data signal and coupling the data signal to a transmitter, and for producing a power control signal during the period the data signal is present at an input of the demodulator. The power control signal is coupled to the transmitter and controls the operation of the transmitter such that the transmitter only receives power when the demodulator produces the power control signal. During the period the transmitter receives power, it functions to provide and modulate a carrier signal in accordance with the data signal received from the source of data signals.

US Patent:

55131832, Apr 30, 1996

Filed:

Jul 27, 1994

Appl. No.:

8/281389

Inventors:

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

Assignee:

Hughes Aircraft Company - Los Angeles CA

International Classification:

H04J 316

US Classification:

370 953

Abstract:

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 an information burst basis. In order to avoid compromising the voice transmission capacity, control signals (for the allocation and deallocation of both forward and reverse traffic channels) are sent using multiple diversity, i. e. both time and frequency. In addition, to increase the number of available control channels, a control channel comprises a sub-divided portion of an otherwise equivalent voice traffic slot. For reverse allocation requests, which are transmitted over a contention access channel, power diversity is used in addition to time and frequency diversity.

US Patent:

59958120, Nov 30, 1999

Filed:

Sep 1, 1995

Appl. No.:

8/523105

Inventors:

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

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04B 7155

US Classification:

455119

Abstract:

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.

US Patent:

57038813, Dec 30, 1997

Filed:

Mar 9, 1993

Appl. No.:

8/028502

Inventors:

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

Assignee:

Hughes Electronics - Los Angeles CA

International Classification:

H04J 317

US Classification:

370468

Abstract:

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.

Author:

John T. Corrigan

ISBN #:

0875070035

Author:

John T. Corrigan

ISBN #:

0875070078

Author:

John T. Corrigan

ISBN #:

0875070086

Author:

John D. Corrigan

ISBN #:

0138604452

Author:

John Corrigan

ISBN #:

0023250925

Author:

John Corrigan

ISBN #:

0023250984

Author:

John Corrigan

ISBN #:

0023251328

Author:

John Corrigan

ISBN #:

0023578300