Daniel Draper

US Patent:

7265334, Sep 4, 2007

Filed:

Oct 5, 2005

Appl. No.:

11/244484

Inventors:

Daniel Draper - Portland OR, US
Maurice M. Reintjes - Beaverton OR, US
Gilberto I. Sada - Irvine CA, US
Keith R. Jones - Irvine CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H01J 40/14

US Classification:

250214R, 250214 C

Abstract:

A method and apparatus is disclosed for optic signal power control to maintain a desired or optimum optic signal power level. During start-up, a target value from memory may be utilized to control one or more power levels of an optic signal. There may comprise 2 or more different power levels for the optic signal. During operation, target values may continue to be utilized or an open loop or closed loop control system may be utilized. Compensation may occur for both additive noise/distortion and multiplicative noise/distortion. The compensation for one power level may be expanded or extrapolated to compensate for additive noise/distortion and multiplicative noise/distortion that affect other power levels.

US Patent:

7276682, Oct 2, 2007

Filed:

Nov 19, 2004

Appl. No.:

10/993561

Inventors:

Daniel Draper - Portland OR, US
Gilberto I. Sada - Irvine CA, US
Maurice M. Reintjes - Beaverton OR, US
Keith R. Jones - Irvine CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

G01J 1/32

US Classification:

250205, 250214 R, 250214 C, 372 3802

Abstract:

A method and apparatus is disclosed for optic signal power control to maintain a desired or optimum optic signal power level. During start-up, a default or target value from memory may be utilized to bias or otherwise control operation of an optic signal generator or driver. During operation, pre-stored values may continue to be utilized or an open loop or closed loop control system may be utilized. An open loop control system may incorporate a temperature module or a timer module to account for changes in environment or changes due to aging that may undesirably affect system operation. A closed loop control system may incorporate one or more feedback loops that generate a compensation value to account for detected changes. In one configuration one or more peak values of the actual optic signal, or a portion thereof, are detected and processed to generate the compensation signal.

US Patent:

7499648, Mar 3, 2009

Filed:

Sep 27, 2004

Appl. No.:

10/952488

Inventors:

Daniel S. Draper - Portland OR, US
Charles E. Chang - Coto DeCaza CA, US
Wim F. Cops - Newport Beach CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H04B 10/16

US Classification:

398 37, 398177

Abstract:

A method and apparatus for signal amplification and decision device operation on a signal which has a magnitude, peak value, or other average power that varies over time. In general, a peak detector detects the peak value of a received signal and responsive to the peak value, selectively enables a decision device when the signal is amplified to increase decision device accuracy. The decision may occur before the amplification forces the signal into saturation. Multi-stage amplification in combination with controlled switching or multiplexing may be utilized to selectively amplify the signal and selectively initiate decision device operation. The peak detector value may also control signal amplification levels in a multi-stage amplifier. Responsive to the peak value, a switch, which receives as its input the output from one or more amplifier stages, may be controlled to output the signal after a desired amount of amplification.

US Patent:

7504610, Mar 17, 2009

Filed:

Jul 5, 2007

Appl. No.:

11/825463

Inventors:

Daniel S. Draper - Portland OR, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

G01J 1/32

US Classification:

250205, 250214 R

Abstract:

The power control system utilizing a normal average power control loop to control average power and modulation level of an optic signal generated by an optic signal generator. The target average power is adjusted by a small percentage, and the corresponding change in bias current needed to adjust the average power level is monitored. The change in average power divided by the change in bias current is a measure of the optic signal generator's slope efficiency. Modulation current is adjusted up or down based on the change in slope efficiency compared to the slope efficiency stored at the time of module calibration. By adjusting the modulation current, the desired optic signal output from the transmitter may be maintained.

US Patent:

7525346, Apr 28, 2009

Filed:

Jul 11, 2002

Appl. No.:

10/193834

Inventors:

Michael P. Khaw - Portland OR, US
Daniel S. Draper - Portland OR, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H03F 3/45

US Classification:

327 52, 327 54, 330252, 330257

Abstract:

In one system embodiment, the system is characterized by: a differential amplifier including but not limited to at least one amplifying transistor having an emitter coupled directly to a ground. In one embodiment of a method of making a system, the method is characterized by: operably coupling at least one amplifying transistor of a differential amplifier directly to a ground. In one embodiment of a method of driving a system, the method is characterized by: driving at least one amplifying transistor of a differential amplifier with an emitter-follower feedback loop. In one system embodiment, the system is characterized by: a differential amplifier including but not limited to a first amplifying transistor having a base operably coupled with a first emitter-follower feedback loop.

US Patent:

7583902, Sep 1, 2009

Filed:

Aug 10, 2004

Appl. No.:

10/916216

Inventors:

Daniel Draper - Portland OR, US
Maurice M. Reintjes - Beaverton OR, US
Gilberto I. Sada - San Diego CA, US
Keith R. Jones - Ramona CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H04B 10/04
H04B 10/08

US Classification:

398186, 398193, 398 31, 398 32, 398 33

Abstract:

A method and apparatus configured to incorporate system data for transmission as part of or concurrently with network data. The system data may comprise communication system data for use in controlling or monitoring a communication system. The system data may be is utilized to control or adjust the amplitude or intensity of the network data to thereby amplitude modulate the system data into or with the transmission of the network data. By monitoring the amplitude or intensity of the received network data signal, the system data may be recovered. An automatic gain control or bias loop may be monitored to detect the amplitude modulation of the network data. The system data may be encoded.

US Patent:

7608806, Oct 27, 2009

Filed:

May 20, 2005

Appl. No.:

11/134715

Inventors:

Daniel Draper - Portland OR, US
Maurice M. Reintjes - Beaverton OR, US
Gilberto I. Sada - Irvine CA, US
Keith R. Jones - Irvine CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

G01J 1/32

US Classification:

250205, 250214 R, 372 29011, 372 29014

Abstract:

A method and apparatus is disclosed for optic signal power control to maintain a desired or optimum optic signal power level. During start-up, a default or target value from memory may be utilized to bias or otherwise control operation of an optic signal generator or driver. During operation, one or more parameters or aspects of the optic module or the environment may be monitored. In response to the monitoring one or more control signal may be generated to created to modify bias level, modulation level, or both. The monitoring may monitor the optic signal itself. The bias level and modulation level may be changed simultaneously.

US Patent:

7680164, Mar 16, 2010

Filed:

May 31, 2005

Appl. No.:

11/141214

Inventors:

Daniel Draper - Portland OR, US
Anping Liu - Portland OR, US
Maurice M. Reintjes - Beaverton OR, US
Jerome Garez - Beaverton OR, US
Kenneth Tsui - Beaverton OR, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

H01S 3/00

US Classification:

372 3802, 372 2902, 372 29021, 372 381, 372 3803, 372 3807

Abstract:

Various laser drivers and methods are provided. In one embodiment, a laser driver is provided that comprises a laser driver circuit having a common anode portion and a common cathode portion. The common anode portion and the common cathode portion are each configured to drive a laser. Also, the laser driver includes a control input to alternatively enable one of the common anode portion and the common cathode portion to drive the laser.