Mark P Mallory

US Patent:

20130170629, Jul 4, 2013

Filed:

May 10, 2010

Appl. No.:

13/696798

Inventors:

Mark B. Flowers - Los Gatos CA, US
Mark H. Brady - San Ramon CA, US
Marc H. Goldburg - Redwood City CA, US
Mark P. Mallory - Mukilteo WA, US
Ardavan Maleki Tehrani - Menlo Park CA, US

Assignee:

Adaptive Spectrum and Signal Alignment, Inc. - Redwood City CA

International Classification:

H04M 3/28

US Classification:

379 23

Abstract:

A probing signal transmitted on a twisted pair telephone line in a DSL system is reflected and received at a DSL device. An estimate of one of a DSL data transmission signal or DSL synch symbol transmission signal is removed from the received probing signal to recover the reflected probing signal. The recovered reflected probing signal is processed to determine characteristics information of the twisted pair telephone line.

US Patent:

59955678, Nov 30, 1999

Filed:

Apr 4, 1997

Appl. No.:

8/835073

Inventors:

John M. Cioffi - Cupertino CA
Mark P. Mallory - Sunnyvale CA
John A. C. Bingham - Palo Alto CA

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G09B 300
H04B 110

US Classification:

375346

Abstract:

A receiver or receiver system for high speed data communications having a radio frequency noise canceller is disclosed. The radio frequency noise canceller removes radio-frequency noise from received signals over a transmission medium by adaptively estimating the radio-frequency noise during data transmission. In one embodiment, the radio frequency noise canceller includes: an adaptive filter for producing a noise cancellation signal by filtering a reference noise signal based on filter parameters, a subtractor for subtracting the noise cancellation signal from the first signal to produce the second signal; and an update circuit for enabling, at predetermined times, modification of the parameters of the adaptive filter based on the then existing second signal. A method for removing radio frequency noise is also disclosed.

US Patent:

58387994, Nov 17, 1998

Filed:

May 26, 1995

Appl. No.:

8/453564

Inventors:

John M. Cioffi - Cupertino CA
John A. C. Bingham - Palo Alto CA
Mark P. Mallory - Sunnyvale CA

Assignee:

Amati Communications Corporation - San Jose CA

International Classification:

H04H 500
H04H 100

US Classification:

381 2

Abstract:

A method and apparatus for transmitting digital sound is disclosed. The method contemplates transmitting a digital radio signal (such as an FM band signal) over a plurality of sub-channels subject to some constraints on the digital signal power. A control sub-channel, sometimes referred to as an auxiliary overhead channel is used to transmit control information which is interpreted by the receiver to identify the location and potentially the mode of the digital signals.

US Patent:

20140334609, Nov 13, 2014

Filed:

Jul 25, 2014

Appl. No.:

14/341659

Inventors:

Mark B. Flowers - Los Gatos CA, US
Mark H. Brady - Stanford CA, US
Marc Goldburg - Redwood City CA, US
Mark P. Mallory - Mukilteo WA, US
Ardavan Maleki Tehrani - Menlo Park CA, US

Assignee:

Adaptive Spectrum and Signal Alignment, Inc. - Redwood City CA

International Classification:

H04M 3/30
H04M 11/06

US Classification:

379 104

Abstract:

A probing signal transmitted on a twisted pair telephone line in a DSL system is reflected and received at a DSL device. An estimate of one of a DSL data transmission signal or DSL synch symbol transmission signal is removed from the received probing signal to recover the reflected probing signal. The recovered reflected probing signal is processed to determine characteristics information of the twisted pair telephone line.