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Guozhong Shen

from Fremont, CA
Age ~49
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Also known as:
Shen Guozhong
Phone and address:
40866 Capa Dr, Fremont, CA 94539
Connected to:
Bruce ShenCharlene C Shen, 66Che Shen, 58Christopher T Shen, 40Clifton K Shen, 52Derrick Y Shen, 41Guang Shen, 37Honglue Shen, 57Hongwu Shen, 44Irving Shen, 61

Guozhong Shen Phones & Addresses

  • 40866 Capa Dr, Fremont, CA 94539
  • 4261 Stevenson Blvd, Fremont, CA 94538
  • 46820 Winema Cmn, Fremont, CA 94539
  • 4425 Bidwell Dr, Fremont, CA 94538
  • 2985 Lugano Way, San Jose, CA 95132
  • 2208 Ladymuir Ct, San Jose, CA 95131
  • 750 King Rd, San Jose, CA 95133
  • Santa Clara, CA
  • Milpitas, CA

Work

Company: Maxim integrated products Aug 2009 Position: Sr. member of technical staff

Education

School / High School: Zhejiang University

Skills

Semiconductors • Firmware • Mixed Signal • Analog • Asic • Hardware Architecture • Digital Signal Processors • Fpga • Soc • Verilog • Analog Circuit Design • Debugging • Hardware • Circuit Design • Ic

Languages

English

Industries

Semiconductors

Resumes

Resumes

Guozhong Shen Photo 1

Guozhong Shen

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Location:
40866 Capa Dr, Fremont, CA 94539
Industry:
Semiconductors
Work:
Maxim Integrated Products since Aug 2009
Sr. Member of Technical Staff
Apple Inc. Feb 2008 - Aug 2009
Sr. Hardware Engineer
LDS Test and Measurement Jan 2001 - Feb 2008
Lead Hardware and DSP Engineer
Education:
Zhejiang University
Skills:
Semiconductors
Firmware
Mixed Signal
Analog
Asic
Hardware Architecture
Digital Signal Processors
Fpga
Soc
Verilog
Analog Circuit Design
Debugging
Hardware
Circuit Design
Ic
Languages:
English

Publications

Us Patents

Continuous Time Correlator Architecture

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US Patent:
8643619, Feb 4, 2014
Filed:
Feb 24, 2012
Appl. No.:
13/404594
Inventors:
Ozan E. Erdogan - Sunnyvale CA, US
Guozhong Shen - San Jose CA, US
Rajesh Anantharaman - San Jose CA, US
Ajay Taparia - Santa Clara CA, US
Behrooz Javid - Irvine CA, US
Syed T. Mahmud - Dublin CA, US
Assignee:
Maxim Integrated Products, Inc. - San Jose CA
International Classification:
G06F 3/041
US Classification:
345173, 178 1806, 324658
Abstract:
An analog front end circuit utilizes coherent detection within a capacitance measurement application. The analog front end circuit uses coherent detection to measure capacitance of a touch screen display. An analog excitation signal is modulated by a capacitor to be measured. The modulated signal is synchronously demodulated using a correlator, which includes an integrated mixing and integration circuit. The correlator includes a programmable impedance element that generates a time-varying conductance according to a controlling digitized waveform.

Signal Processing System And Method

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US Patent:
20040083311, Apr 29, 2004
Filed:
Jun 5, 2002
Appl. No.:
10/161655
Inventors:
James Zhuge - Palo Alto CA, US
Zhengge Tang - San Jose CA, US
Lixin Yu - San Jose CA, US
Guozhong Shen - San Jose CA, US
International Classification:
G06F003/00
US Classification:
710/001000
Abstract:
A signal analysis system is provided that includes master DSP circuitry, slave DSP circuitry, a LVDS bus, wherein the LVDS bus couples the master DSP circuitry to the slave DSP circuitry, and a USB interface, wherein the USB interface is coupled to the master DSP circuit.

Ripple Elimination Filter

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US Patent:
20060020650, Jan 26, 2006
Filed:
Jul 20, 2004
Appl. No.:
10/893900
Inventors:
Guozhong Shen - Fremont CA, US
James Zhuge - Palo Alto CA, US
International Classification:
G06F 17/10
US Classification:
708300000
Abstract:
A method for removing a step response ripple from a digital signal is accomplished by passing the digital signal through a low pass filter and a decimation filter forming a resultant signal, and filtering the resultant signal with a 4-tap Finite Impulse Response filter (FIR), wherein when half a sampling frequency is normalized as 1, the FIR has a transition band of greater than or equal to 0.1 of the normalized frequency resulting in a signal without a step response ripple.

Background Noise Measurement And Frequency Selection In Touch Panel Sensor Systems

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US Patent:
20120217978, Aug 30, 2012
Filed:
Feb 22, 2012
Appl. No.:
13/401995
Inventors:
Guozhong Shen - San Jose CA, US
Ozan E. Erdogan - Saratoga CA, US
Syed Mahmud - Dublin CA, US
Kenneth W. Knox - Palo Alto CA, US
Assignee:
MAXIM INTEGRATED PRODUCTS, INC. - Sunnyvale CA
International Classification:
G01R 35/00
G01R 29/26
US Classification:
324601, 324613
Abstract:
A touch panel sensor system that can dynamically measure noise and automatically switch to a frequency with minimal noise is described. The touch panel sensor system includes a sensor configured to detect a change in capacitance associated with a touch upon a touch panel. The system also includes a drive module configured to generate a drive signal having a first waveform characteristic (e.g., signal having a periodic waveform characteristic) during a first phase (e.g., sensor phase) and a second drive signal having a second waveform characteristic (e.g., constant voltage signal) during a second phase (e.g., noise detection phase). The first and second drive signals are configured to drive the sensor. The system also includes a measuring module coupled to the sensor that is configured to measure noise having the first waveform characteristic (e.g., periodic waveform characteristic) during the second phase.

Circuits, Devices And Methods Having Pipelined Capacitance Sensing

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US Patent:
20120217981, Aug 30, 2012
Filed:
Feb 23, 2012
Appl. No.:
13/403885
Inventors:
Ozan E. Erdogan - Sunnyvale CA, US
Guozhong Shen - San Jose CA, US
Syed T. Mahmud - Dublin CA, US
Jean CauXuan Le - Santa Clara CA, US
Assignee:
MAXIM INTEGRATED PRODUCTS, INC. - Sunnyvale CA
International Classification:
G01R 27/26
US Classification:
324679
Abstract:
Capacitance sensing circuits, systems and method can include sample and hold (S/H) circuits that can retain analog values for one set of capacitance sensors, and sequentially convert such analog values into digital values while analog values for another set of capacitance sensors values are generated.

Calibration For Mixed-Signal Integrator Architecture

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US Patent:
20120218020, Aug 30, 2012
Filed:
Feb 24, 2012
Appl. No.:
13/404817
Inventors:
Ozan E. Erdogan - Sunnyvale CA, US
Guozhong Shen - San Jose CA, US
Rajesh Anantharaman - San Jose CA, US
Ajay Taparia - Santa Clara CA, US
Behrooz Javid - Irvine CA, US
Syed T. Mahmud - Dublin CA, US
Assignee:
MAXIM INTEGRATED PRODUCTS, INC. - Sunnyvale CA
International Classification:
G06G 7/184
US Classification:
327337
Abstract:
A mixed signal correlator utilizes coherent detection within a capacitance measurement application. In some applications, the mixed signal correlator is used to measure capacitance of a touch screen display. An external capacitor whose capacitance is measured is kept small for improved sensitivity and can be used for a variety of applications having varied integration periods for measurement. The external capacitor is kept small and can be used for varied applications by adjusting the output voltage within a range that is less than the supply voltage, and maintaining a count of the adjustments to later reconstruct an actual output voltage for the integration period. An output is a weighted sum of an analog integrator output and a digital counter output.

Cancelling Touch Panel Offset Of A Touch Panel Sensor

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US Patent:
20120218222, Aug 30, 2012
Filed:
Feb 22, 2012
Appl. No.:
13/402485
Inventors:
Guozhong Shen - San Jose CA, US
Ozan E. Erdogan - Saratoga CA, US
Syed Mahmud - Dublin CA, US
Assignee:
MAXIM INTEGRATED PRODUCTS, INC. - Sunnyvale CA
International Classification:
G06F 3/044
US Classification:
345174
Abstract:
A touch panel sensor system for increasing the dynamic range of the system is disclosed. The touch panel sensor system comprises a sensor driver module for driving one or more sensors of a touchscreen and an offset cancellation driver module for driving an offset cancellation module. The signals generated by the sensors and the offset cancellation module are coupled to a measuring module at a node (N). The signal generated by the offset cancellation drivers can be adjusted so that the waveform characteristics (e.g., amplitude and phase) of the signal generated by the offset cancellation drivers in combination with the offset cancellation module can at least partially cancel parasitic and sensor capacitances (C) of the sensors of the touch panel. A measuring module may then detect a touch event capacitance (C) at the node (N).

Mixed-Signal Integrator Architecture

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US Patent:
20120274404, Nov 1, 2012
Filed:
Feb 24, 2012
Appl. No.:
13/404722
Inventors:
Ozan E. Erdogan - Sunnyvale CA, US
Guozhong Shen - San Jose CA, US
Rajesh Anantharaman - San Jose CA, US
Ajay Taparia - Santa Clara CA, US
Behrooz Javid - Irvine CA, US
Syed T. Mahmud - Dublin CA, US
Assignee:
MAXIM INTEGRATED PRODUCTS, INC. - Sunnyvale CA
International Classification:
H03F 1/34
US Classification:
330293
Abstract:
A mixed signal correlator utilizes coherent detection within a capacitance measurement application. In some applications, the mixed signal correlator is used to measure capacitance of a touch screen display. An external capacitor whose capacitance is measured is kept small for improved sensitivity and can be used for a variety of applications having varied integration periods for measurement. The external capacitor is kept small and can be used for varied applications by adjusting the output voltage within a range that is less than the supply voltage, and maintaining a count of the adjustments to later reconstruct an actual output voltage for the integration period. An output is a weighted sum of an analog integrator output and a digital counter output.
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Guozhong Shen from Fremont, CA, age ~49 Get Report