Qiong Qiong Sun Sun

US Patent:

7319927, Jan 15, 2008

Filed:

May 12, 2005

Appl. No.:

11/127396

Inventors:

Qiong Sun - Farmington Hills MI, US
Eric Schieb - Duluth GA, US
Arnold H. Spieker - Commerce Township MI, US
David W. Weber - South Lyon MI, US
Frank Lubischer - Novi MI, US

Assignee:

Kelsey-Hayes Company - Livonia MI

International Classification:

G06F 17/00
B60K 31/00

US Classification:

701 93, 701 48, 701 54, 701 70, 701 75, 701 76, 701 79, 701 84, 701 96, 701 97, 303191, 303192, 180170

Abstract:

A method is provided for controlling a low speed operation of a vehicle. A speed activation switch is activated. A target vehicle speed is calculated in response to an accelerator pedal demand as determined by an accelerator pedal position where each respective accelerator pedal position is associated with a respective predetermined target vehicle speed. A vehicle turning geometry is determined in response to a steering wheel angle input. A target wheel speed of each of a plurality of vehicle wheels is calculated as a function of the target vehicle speed and turning geometry. An actual wheel speed of each wheel is measured. A net torque is determined in response to the target wheel speeds and actual wheel speeds. An engine output torque and a braking torque are determined in response to the net torque. The engine output torque and the total vehicle braking torque are controlled for cooperatively maintaining the target vehicle speed.

US Patent:

7738904, Jun 15, 2010

Filed:

May 19, 2006

Appl. No.:

11/437560

Inventors:

George Chien - Cupertino CA, US
King Chun Tsai - San Jose CA, US
Sang Won Son - Sunnyvale CA, US
Qiong Sun - Fremont CA, US
Leycheoh Lim - San Jose CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H04B 7/00

US Classification:

455522, 455 77

Abstract:

Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.

US Patent:

7890132, Feb 15, 2011

Filed:

May 7, 2010

Appl. No.:

12/775694

Inventors:

George Chien - Cupertino CA, US
King Chun Tsai - San Jose CA, US
Sang Won Son - Sunnyvale CA, US
Alireza Shirvani Mahdavi - San Jose CA, US
Qiong Sun - Fremont CA, US
Leycheoh Lim - San Jose CA, US

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H04B 7/00

US Classification:

455522

Abstract:

Systems and methods are provided for calibrating the control mechanism in a communication circuit to allow the communication circuit to maintain a desired output power level. The communication circuit includes a variable gain adjustment circuit and a power amplifier, which operate together to provide an output power level. A control circuit controls the variable gain adjustment circuit based on a default gain parameter, a high power threshold, and a low power threshold. A calibration circuit in the control circuit calibrates a default gain parameter to provide a desired output power. A power detector can detect the desired output power level to provide an output power measurement. The calibration circuit calibrates upper and lower power thresholds to provide an acceptable range of power variation around the output power measurement.

US Patent:

7318629, Jan 15, 2008

Filed:

May 12, 2005

Appl. No.:

11/127393

Inventors:

Qiong Sun - Farmington Hills MI, US
Eric Schieb - Duluth GA, US
David W. Weber - South Lyon MI, US
Frank Lubischer - Novi MI, US

Assignee:

Kelsey-Hayes Company - Livonia MI

International Classification:

B60T 8/60

US Classification:

303146, 303191, 701 41

Abstract:

A turn control system is provided having four wheels and a steering wheel that controls the vehicle steering. A steering wheel angle sensor senses an angle of rotation of the steering wheel. An acceleration sensing device senses an acceleration demand. A wheel speed sensing device senses a wheel speed for each of the four wheels. A turn control activation switch enables the turn control system and shifts a vehicle transmission to one of a low or reverse operating gear. A brake control module calculates a target vehicle speed, a vehicle turning geometry, and target wheel speeds. A braking torque command signal is generated for modulating the brake torque. An engine torque command signal is generated for modulating an engine torque for producing the target vehicle speed. A respective additional braking torque is applied to at least one of the wheels for reducing the vehicle turning radius while maintaining the vehicle target speed.