Patents by Inventor Xucheng Wang

Xucheng Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210267513
    Abstract: Disclosed is a method for analyzing dynamic characteristics of EEG functional connectivity related to driving fatigue including: using independent component analysis and wavelet packet transformation to preprocess EEG data; constructing the preprocessed EEG data into a temporal brain network with dynamic characteristics based on a sliding window method; measuring a spatiotemporal topology of the temporal brain network based on a temporal efficiency analysis framework; and performing statistical analysis on the spatiotemporal topology of the temporal brain network to obtain a correlation between behaviors related to driving fatigue and dynamic characteristics of the temporal brain network.
    Type: Application
    Filed: October 8, 2019
    Publication date: September 2, 2021
    Inventors: Hongtao Wang, Xucheng LIU, Ting Li, Cong TANG, Zi'an PEI, Hongwei YUE, Peng CHEN, Tao Xu
  • Patent number: 10007063
    Abstract: In an example embodiment, a WDM array includes an optical filter, N common ports, N reflection ports, and N pass ports. The N common ports may be positioned to a first side of the optical filter. N may be greater than or equal to two. The N reflection ports may be positioned to the first side of the optical filter. The N pass ports may be positioned to a second side of the optical filter opposite the first side.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 26, 2018
    Assignee: FINISAR CORPORATION
    Inventors: Xiaolin Chen, Xucheng Wang, Fan Chen, Steven James Frisken
  • Patent number: 9664661
    Abstract: An integrated circuit that senses ambient gas concentrations includes a microcontroller, gas sensors, heating resistors and an analog-to-digital converter. A first gas sensor measures a first attribute of a gas concentration, and a second gas sensor measures a second attribute of the gas concentration. The first attribute varies with the gas concentration differently than does the second attribute. The microcontroller controls the duty cycles of signals driven through the heating resistors to adjust the temperatures of the resistors, which are thermally coupled to the gas sensors. A first heating resistor increases the temperature of the first gas sensor to a first target temperature, and a second heating resistor increases the temperature of the second gas sensor to a second target temperature. The analog-to-digital converter converts the attributes measured by the first and second gas sensors into digital values. The microcontroller then uses the digital values to compute the gas concentration.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: May 30, 2017
    Assignee: Active-Semi, Inc.
    Inventors: Steven Huynh, XuCheng Wang
  • Publication number: 20170146743
    Abstract: In an example embodiment, a WDM array includes an optical filter, N common ports, N reflection ports, and N pass ports. The N common ports may be positioned to a first side of the optical filter. N may be greater than or equal to two. The N reflection ports may be positioned to the first side of the optical filter. The N pass ports may be positioned to a second side of the optical filter opposite the first side.
    Type: Application
    Filed: February 8, 2017
    Publication date: May 25, 2017
    Inventors: Xiaolin Chen, Xucheng Wang, Fan Chen, Steven James Frisken
  • Patent number: 9575255
    Abstract: In an example embodiment, a WDM array includes an optical filter, N common ports, N reflection ports, and N pass ports. The N common ports may be positioned to a first side of the optical filter. N may be greater than or equal to two. The N reflection ports may be positioned to the first side of the optical filter. The N pass ports may be positioned to a second side of the optical filter opposite the first side.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: February 21, 2017
    Assignee: FINISAR CORPORATION
    Inventors: Xiaolin Chen, Xucheng Wang, Fan Chen, Steven James Frisken
  • Publication number: 20150334475
    Abstract: In an example embodiment, a WDM array includes an optical filter, N common ports, N reflection ports, and N pass ports. The N common ports may be positioned to a first side of the optical filter. N may be greater than or equal to two. The N reflection ports may be positioned to the first side of the optical filter. The N pass ports may be positioned to a second side of the optical filter opposite the first side.
    Type: Application
    Filed: January 2, 2014
    Publication date: November 19, 2015
    Applicant: FINISAR CORPORATION
    Inventors: Xiaolin Chen, Xucheng Wang, Fan Chen, Steven James Frisken
  • Publication number: 20150323510
    Abstract: An integrated circuit that senses ambient gas concentrations includes a microcontroller, gas sensors, heating resistors and an analog-to-digital converter. A first gas sensor measures a first attribute of a gas concentration, and a second gas sensor measures a second attribute of the gas concentration. The first attribute varies with the gas concentration differently than does the second attribute. The microcontroller controls the duty cycles of signals driven through the heating resistors to adjust the temperatures of the resistors, which are thermally coupled to the gas sensors. A first heating resistor increases the temperature of the first gas sensor to a first target temperature, and a second heating resistor increases the temperature of the second gas sensor to a second target temperature. The analog-to-digital converter converts the attributes measured by the first and second gas sensors into digital values. The microcontroller then uses the digital values to compute the gas concentration.
    Type: Application
    Filed: April 27, 2015
    Publication date: November 12, 2015
    Inventors: Steven Huynh, XuCheng Wang
  • Patent number: 6753913
    Abstract: An image processing apparatus for charge coupled device (CCD) and video inputs in a digital camera or for a digital camcorder is disclosed which provides optical black and offset correction for CCD inputs. A sampling circuit, including correlated double sampler (CDS) (402) and programmable gain amplifier (450), samples the image input signal and the video input signal. CDS (402) includes a single-ended amplifier (404) and a differential amplifier (406). The single-ended amplifier (404) functions such that it is only operable during an CCD signal input; otherwise, the single-ended amplifier (404) is bypassed such that a video signal is only sampled by the differential amplifier (406). For CCD signals, the single-ended amplifier (404) samples the reference level of the pixel and holds it during the video interval. The differential amplifier (404) samples both the output of the single ended amplifier (404) and the video level of the same pixel.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: June 22, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Haydar Bilhan, Gary E. Lee, Ramesh Chandrasekaran, Feng Ying, Ching-Yuh Tsay, Xucheng Wang
  • Patent number: 5585756
    Abstract: An ultrafast, high precision gated integrator includes an opamp having differential inputs. A signal to be integrated is applied to one of the differential inputs through a first input network, and a signal indicative of the DC offset component of the signal to be integrated is applied to the other of the differential inputs through a second input network. A pair of electronic switches in the first and second input networks define an integrating period when they are closed. The first and second input networks are substantially symmetrically constructed of matched components so that error components introduced by the electronic switches appear symmetrically in both input circuits and, hence, are nullified by the common mode rejection of the integrating opamp. The signal indicative of the DC offset component is provided by a sample and hold circuit actuated as the integrating period begins.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: December 17, 1996
    Assignee: University of Chicago
    Inventor: Xucheng Wang
  • Patent number: D908817
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: January 26, 2021
    Assignee: Shenzhen Xunya E-Commerce Co., Ltd.
    Inventor: Xucheng Wang