Guo D Li from San Leandro, CA

Wikipedia

Guo Li Zhuang

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Guo Li Zhuang (Chinese: ; pinyin: Gu Li Zhung Din; literally "the strength inside the pot") is a restaurant brand that specializes in dishes prepared ...

Wikipedia References

Guo Li

Us Patents

Concurrent Luminance-Saturation Adjustment Of Digital Images
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US Patent:

7423696, Sep 9, 2008
Filed:

Jan 7, 2005
Appl. No.:

11/031825
Inventors:

Ramin Samadani - Menlo Park CA, US
Guo Li - San Diego CA, US
Assignee:

Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:

H04N 9/68
H04N 9/67
G09G 5/02
US Classification:

348645, 348649, 345604
Abstract:

Brightness of a plurality of pixels in a digital image is adjusted directly in a luminance-chrominance color space. Luminance and saturation are adjusted concurrently without changing hue of the pixels.

Analog To Digital Converters
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US Patent:

7796069, Sep 14, 2010
Filed:

Dec 31, 2008
Appl. No.:

12/317939
Inventors:

Guo Xing Li - Sunnyvale CA, US
Assignee:

02Micro International Limited - Grand Cayman
International Classification:

H03M 1/00
US Classification:

341122, 341155
Abstract:

An analog to digital converter (ADC) converts an analog signal to a digital signal. The ADC includes an input channel, a sampling circuit coupled to the input channel, an integrator coupled to the sampling circuit, and a feedback circuit coupled to the integrator. The input channel receives the analog signal. The sampling circuit samples the analog signal. The integrator receives the sampled analog signal and a feedback signal and integrates a superposition of the sampled analog signal and the feedback signal. The feedback circuit generates the digital signal according to an output of the integrator and sends the feedback signal indicative of the digital signal to the integrator.

Fuse Circuits
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US Patent:

8058921, Nov 15, 2011
Filed:

May 8, 2009
Appl. No.:

12/463071
Inventors:

Guo Xing Li - Sunnyvale CA, US
Songtao Chen - Shenzhen, CN
Assignee:

O2Micro, Inc. - Santa Clara CA
International Classification:

H01H 37/76
H01H 85/00
US Classification:

327525
Abstract:

A fuse circuit includes a fuse having an intact state and a blown state. The fuse can be switched to the blown state by enabling a blowing current to flow through the fuse. The fuse is coupled between a first transistor and a second transistor in series. The first transistor and the second transistor are complementary transistors and operable for reducing an electrostatic discharge current flowing through the fuse. The first transistor and the second transistor are turned on to enable the blowing current to flow through the fuse.

Circuits And Methods For Battery Charging
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US Patent:

8143862, Mar 27, 2012
Filed:

Mar 12, 2009
Appl. No.:

12/402734
Inventors:

Guo Xing Li - Sunnyvale CA, US
Jiankui Guo - Shenzhen, CN
Xin Dong - Shenzhen, CN
Songtao Chen - Shenzhen, CN
Ruichao Tang - Shenzhen, CN
Chutao Zheng - Shenzhen, CN
Celin He - Shenzhen, CN
Assignee:

02Micro Inc. - Santa Clara CA
International Classification:

H02J 7/04
US Classification:

320145
Abstract:

A circuit for charging a battery pack includes a power converter and a charger controller. The power converter is operable for receiving an input power, and for providing a charging power for charging the battery pack. The power converter provides galvanic isolation between input circuitry and output circuitry of the circuit. The input circuitry shares a first ground potential with the input power, and the output circuitry shares a second ground potential with the charging power. The charger controller in the input circuitry includes a modulator for generating a driving signal to drive the power converter and control the charging power.

Circuits And Methods For Monitoring Multi-Cell Battery Packs
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US Patent:

8253383, Aug 28, 2012
Filed:

Feb 5, 2009
Appl. No.:

12/366084
Inventors:

Guo Xing Li - Sunnyvale CA, US
Assignee:

O2Micro Inc - Santa Clara CA
International Classification:

G01N 27/27
H02J 7/00
US Classification:

320134, 320162
Abstract:

A voltage detection circuit can include a status sensing network and a comparing network. The status sensing network can simultaneously detect a cell voltage for each battery cell of a plurality of battery cells. The comparing network can simultaneously compare the detected cell voltages with a predetermined voltage threshold by comparing the maximum of the cell voltages with a first (high-voltage) threshold, and by comparing the minimum of the cell voltages with a second (low-voltage) threshold. The comparing network can also generate an indication signal when a cell voltage does not satisfy the respective voltage threshold.

Circuits And Methods For Battery Charging
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US Patent:

8519676, Aug 27, 2013
Filed:

Mar 6, 2012
Appl. No.:

13/413360
Inventors:

Guo Xing Li - Sunnyvale CA, US
Jiankui Guo - Shenzhen, CN
Xin Dong - Shenzhen, CN
Ruichao Tang - Shenzhen, CN
Chutao Zheng - Shenzhen, CN
Celin He - Shenzhen, CN
Songtao Chen - Shenzhen, CN
Assignee:

O2Micro Inc. - Santa Clara CA
International Classification:

H02J 7/04
H02J 7/00
US Classification:

320145, 320137, 320162
Abstract:

A circuit for charging a battery pack includes a transformer and a charger controller. The transformer is operable for receiving an input power and for providing a charging power according to a driving signal to charge the battery pack. The charger controller is operable for monitoring a status of the battery pack, for selecting a charging mode from multiple charging modes according to the status, and for generating the driving signal according to the charging mode to adjust the charging power. The charger controller further executes a state machine that stores data indicating predetermined battery statuses that cause saturation of the transformer, and that selects a protection mode in which said charging power is restricted if the status of the battery pack matches to one of the predetermined battery statuses.

Charge Pump Systems With Adjustable Frequency Control
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US Patent:

20090128212, May 21, 2009
Filed:

Nov 17, 2008
Appl. No.:

12/313114
Inventors:

Quanwang Liu - Chengdu, CN
Guo Xing Li - Sunnyvale CA, US
Shiqiang Liu - Shenzhen, CN
International Classification:

G06F 1/04
US Classification:

327291
Abstract:

An electronic system includes a charge pump driver for generating an output to control an electronic element. The electronic system further includes a clock generator coupled to the charge pump driver. The clock generator can generate a clock signal to control the charge pump driver and adjust a frequency of the clock signal according to a status of the electronic element.

Signal Conversion Systems
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US Patent:

20100241679, Sep 23, 2010
Filed:

Mar 17, 2009
Appl. No.:

12/405541
Inventors:

Guo Xing LI - Sunnyvale CA, US
International Classification:

G06F 7/58
G06F 7/50
US Classification:

708250, 708670
Abstract:

A signal conversion system includes a compensation module and a conversion module coupled to the compensation module. The compensation module is operable for adjusting a first compensation signal according to a dynamic signal and adding the first compensation signal to a first input signal. The compensation module is also operable for subtracting a second compensation signal, indicative of an accumulation of the dynamic signal, from the output signal. The conversion module is operable for receiving a second input signal that is the sum of the first input signal and the first compensation signal, and converting the second input signal to the output signal.