CHARLES DAVID THOMPSON
Pilots at Elliott Rnch Rd, Creedmoor, TX

7643600, Jan 5, 2010

Nov 30, 2006

11/565499

Adrian Maxim - Austin TX, US
Charles D. Thompson - Buda TX, US
Mitchell Reid - Austin TX, US

Silicon Laboratories, Inc. - Austin TX

H04L 25/40, H04L 7/00, H04L 25/00

375371, 375316, 375324, 375339, 375340, 375345

A receiver () includes a first mixing digital-to-analog converter (DAC) (), a second mixing DAC (), a direct digital frequency synthesizer (DDFS) (), a phase correction circuit (), a selectable load () and a magnitude correction circuit (). The first mixing DAC () includes a first input for receiving an input signal, a second input for receiving a digital first local oscillator (LO) signal and an output. The second mixing DAC () includes a first input for receiving the input signal, a second input for receiving a digital second local oscillator (LO) signal and an output. The DDFS () is configured to provide the first and second LO signals, which are quadrature signals. The phase correction circuit () is configured to provide a phase correction signal to a control input of the DDFS (). The first selectable load () includes an input coupled to the output of the first mixing DAC () and a control input. The magnitude correction circuit () is configured to provide a first magnitude correction signal to the control input of the first selectable load ().

7386284, Jun 10, 2008

Dec 1, 2004

11/001282

Charles D. Thompson - Buda TX, US

Silicon Laboratories Inc. - Austin TX

H04B 17/00

4551153, 4552321, 455 82, 455 132, 455 121, 455 302, 348722, 348731

A receiver includes a tuner and a circuit. The tuner receives an indication of a radio frequency signal from an antenna feedline in response to the radio frequency signal being provided to the antenna feedline by an amplifier. The circuit transmits a control signal to the antenna feedline to control a gain of the amplifier in response to a strength of the radio frequency signal.

5698805, Dec 16, 1997

Sep 14, 1995

8/528031

Charles D. Thompson - Buda TX
Salvador R. Bernadas - Austin TX
Michael V. Jenkins - Austin TX

Crystal Semiconductor Corporation - Austin TX

G10H 108, G10H 114, G10H 118

84615

The present invention relates to a tone signal generator. The tone signal generator includes first tone signal generation means for producing a dual-tone, multi-frequency ("DTMF") audio signal; second tone signal means for producing a plurality of non-DTMF audio signals; storage means for storing data that represents at least one channel of an output audio tone signal; and selection means for selectively loading the DTMF signal into the storage means and for selectively accumulating the non-DTMF signals into the storage means so as to generate the output tone signal.

7266195, Sep 4, 2007

Mar 4, 2003

10/379367

Timothy J. Dupuis - Austin TX, US
Charles D. Thompson - Buda TX, US

Silicon Laboratories Inc. - Austin TX

H04M 1/00

379412, 37939901

A surge clamp circuit that may be implemented with DAA circuitry to limit the total voltage developed across one or more line side capacitors due to charge pumping phenomenon during a multi-transient events such as lightning strikes. The surge clamp circuit is capable of electronically sensing a transient event (e. g. , lightning strike) and of momentarily turning on one or more components of a DAA hookswitch circuit during on hook mode to discharge the voltage developed across one or more line side capacitors before it reaches critical breakdown levels. The surge clamp circuit may be configured with a clamping sensitivity selected so that the DAA hookswitch circuitry is only activated or turned on upon occurrence of relatively large and potentially damaging transient events, and not upon occurrence of non-damaging transient events, such as operational signals.

6271715, Aug 7, 2001

Feb 27, 1998

9/032891

Mark A. Pinchback - Sunnyvale CA
Charles D. Thompson - Buda TX

Maxim Integrated Products, Inc. - Sunnyvale CA

G05F 110

327536

The present invention comprises a method and apparatus for boosting an input signal to an output signal with a variable gain according to a supply voltage. The circuit comprises a detector and a voltage booster. The detector detects the supply voltage and generates a control signal having a value dependent on a difference between the detected supply voltage and a critical supply voltage. The critical supply voltage is temperature insensitive. The voltage booster is coupled to the detector for generating an output signal having a gain relative to the input signal. The gain is dependent on the value of the control signal.

8222721, Jul 17, 2012

Oct 21, 2003

10/691212

Andrew W. Dornbusch - Austin TX, US
Charles D. Thompson - Buda TX, US

Silicon Laboratories Inc. - Austin TX

H01L 23/02

257686, 257E25018, 257777, 257778, 333193, 333194, 438109

An integrated circuit () includes a semiconductor substrate () and an integrated circuit package (). The semiconductor substrate () has a first pair of bonding pads () conducting a differential output signal thereon and adapted to be coupled to an input of a first external filter, and a second pair of bonding pads () conducting a differential input signal thereon and adapted to be coupled to an output of said first external filter. The integrated circuit package () encapsulates the semiconductor substrate () and has first () and second () terminal pairs corresponding and coupled to the first () and second () pairs of bonding pads, respectively. The first () and second () terminal pairs are separated by a first predetermined distance is sufficient to maintain an input-to-output isolation therebetween of at least a first predetermined amount.

7221319, May 22, 2007

Dec 1, 2004

11/000696

Charles D. Thompson - Buda TX, US

Silicon Laboratories Inc. - Austin TX

G01S 5/02, H04B 1/06

342417, 4552771

A system includes a first antenna that is located on one side of a motor vehicle and a second antenna that is located on another side of the motor vehicle. The system includes a controller, a switch and a receiver. In response to a heading of the motor vehicle, the controller selectively couples the receiver to one of the first antenna and the second antenna.

2006017, Aug 10, 2006

Mar 30, 2005

11/093421

Charles Thompson - Buda TX, US
Andrew Dornbusch - Austin TX, US
Saroj Rout - Nashua NH, US

H04B 1/28

455333000

A technique includes fabricating receive paths of a diversity receiver on a monolithic semiconductor die. The technique includes fabricating a local oscillator source on the die to be shared in common with the receive paths of the diversity receiver.

2006022, Oct 5, 2006

Mar 30, 2005

11/093863

Scott Dupuie - Lakeway TX, US
Charles Thompson - Buda TX, US
Andrew Dornbusch - Austin TX, US

H04B 1/06, H04B 7/00

455234200

A technique includes applying a first gain to a first radio frequency signal to generate a second radio frequency signal, and the technique includes generating an intermediate frequency signal in response to the second radio frequency signal. In response to a change occurring in the first gain, a second gain that is applied to the intermediate frequency signal is changed to cancel at least some of the change in the first gain.

7457605, Nov 25, 2008

Sep 10, 2004

10/938915

Charles D. Thompson - Buda TX, US
Edward Kim Fung Lee - Fullerton CA, US

Silicon Laboratories, Inc. - Austin TX

H04B 1/26, H04B 1/10

455313, 455285, 455326

A receiver () includes a transconductance mixer (), a polyphase filter (), and a transimpedance amplifier (). The transconductance mixer () mixes a radio frequency (RF) voltage signal into a current signal having a plurality of phases using a local oscillator signal. The polyphase filter () filters the current signal to provide a filtered current signal. The transimpedance amplifier () converts the filtered current signal into an output voltage signal.