Patents by Inventor Xinchao Zhang

Xinchao Zhang 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: 20240135900
    Abstract: Methods and apparatus for graphics processing, such as producing a smooth transition between images of different dynamic ranges (e.g., Standard Dynamic Range (SDR) images and High Dynamic Range (HDR) images). An example method generally includes using a high frame rate during a transition period to allow properties of images to incrementally vary. The properties may include brightness (i.e., luminance), color gamut, tone mapping, among others. For example, during the transition period, a subset of HDR images are displayed at a second frame rate (e.g., 120 Hz) higher than a frame rate based on the HDR images (e.g., 30 Hz). Simultaneously, a brightness level (as well as other aspects) of the display panel is adjusted incrementally from an SDR brightness level to an HDR brightness level during the transition time period over the subset of the HDR images.
    Type: Application
    Filed: April 13, 2021
    Publication date: April 25, 2024
    Inventors: Nan ZHANG, Ike IKIZYAN, Xinchao YANG, Zhizhou CHEN
  • Patent number: 11929047
    Abstract: Systems, methods, and non-transitory media are provided for dynamically switching frame rates without changing a display refresh rate. An example method can include receiving, from a display device associated with a computing device, a set of control signals indicating a display refresh rate implemented by the display device; adjusting a frame rate associated with application data from one or more applications executed on the computing device; synchronizing, based on the set of control signals, the adjusted frame rate with two or more display refresh cycles, each display refresh cycle being based on the display refresh rate; providing, to the display device, a first frame at the adjusted frame rate, the first frame being generated based on the application data; and displaying the first frame at the display device implementing the display refresh rate.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: March 12, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Nan Zhang, Xinchao Yang, Yongjun Xu
  • Patent number: 8983621
    Abstract: A functional electrical stimulation system having a boost module to raise an output voltage of a primary power to a first preset voltage, an energy storage module, connected to the boost module, configured to store electrical energy of the first preset voltage, a central control unit configured to generate data packets of electrical stimulation parameters, and an electrical stimulation output channel, connected to the energy storage module, configured to receive the data packets of electrical stimulation parameters, analyze the electrical stimulation parameters from the data packets, convert electrical energy stored in the energy storage module to an electrical stimulation pulse corresponding to the electrical stimulation parameters and apply the electrical stimulation pulse to a part of a user.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 17, 2015
    Assignee: Institute of Automation, Chinese Academy of Sciences
    Inventors: Zengguang Hou, Yixiong Chen, Pengfeng Li, Min Tan, Long Cheng, Qingling Li, Feng Zhang, Jin Hu, Long Peng, Xinchao Zhang
  • Patent number: 8755903
    Abstract: The present invention discloses a functional electrical stimulation system comprising a primary power, a boost module, an energy storage section, an output control relay, an automatic discharge circuit, a foot/hand controlled switch, a current detection chip and a current limiting fuse. The boost module comprises n DC chopper circuits connected in series, and outputs a high voltage of 100-200V. According to an enable signal and a current detection signal, the output control relay disables/enables the DC boost module. The automatic discharge circuit discharges capacitance of the energy storage section automatically when the relay turns off the power input. The Foot/hand controlled switch, the current detection chip and the current limiting fuse form a triple accident protection circuit. The functional electrical stimulation system maximizes the intensity of electrical stimulation within the range that the human body can withstand.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: June 17, 2014
    Assignee: Institute of Automation, Chinese Academy of Sciences
    Inventors: Zengguang Hou, Min Tan, Yixiong Chen, Pengfeng Li, Hongbo Wang, Long Cheng, Guoqing Hu, Qingling Li, Feng Zhang, Jin Hu, Xinchao Zhang, Yi Hong, Junwei Zhang, Jinzhu Bai, Zhen Lv
  • Publication number: 20140100638
    Abstract: A functional electrical stimulation system having a boost module to raise an output voltage of a primary power to a first preset voltage, an energy storage module, connected to the boost module, configured to store electrical energy of the first preset voltage, a central control unit configured to generate data packets of electrical stimulation parameters, and an electrical stimulation output channel, connected to the energy storage module, configured to receive the data packets of electrical stimulation parameters, analyze the electrical stimulation parameters from the data packets, convert electrical energy stored in the energy storage module to an electrical stimulation pulse corresponding to the electrical stimulation parameters and apply the electrical stimulation pulse to a part of a user.
    Type: Application
    Filed: June 28, 2011
    Publication date: April 10, 2014
    Inventors: Zengguang Hou, Yixiong Chen, Pengfeng Li, Min Tan, Long Cheng, Qingling Li, Feng Zhang, Jin Hu, Long Peng, Xinchao Zhang
  • Publication number: 20130231724
    Abstract: The present invention discloses a functional electrical stimulation system comprising a primary power, a boost module, an energy storage section, an output control relay, an automatic discharge circuit, a foot/hand controlled switch, a current detection chip and a current limiting fuse. The boost module comprises n DC chopper circuits connected in series, and outputs a high voltage of 100-200V. According to an enable signal and a current detection signal, the output control relay disables/enables the DC boost module. The automatic discharge circuit discharges capacitance of the energy storage section automatically when the relay turns off the power input. The Foot/hand controlled switch, the current detection chip and the current limiting fuse form a triple accident protection circuit. The functional electrical stimulation system maximizes the intensity of electrical stimulation within the range that the human body can withstand.
    Type: Application
    Filed: June 28, 2011
    Publication date: September 5, 2013
    Inventors: Zengguang Hou, Min Tan, Yixiong Chen, Pengfeng Li, Hongbo Wang, Long Cheng, Guoqing Hu, Qingling Li, Feng Zhang, Jin Hu, Xinchao Zhang, Yi Hong, Junwei Zhang, Jinzhu Bai, Zhen Lv
  • Patent number: 5025784
    Abstract: An apparatus and method for detecting and processing an impedance rheogram includes a constant current source with output electrodes, an impedance signal detecting circuit having detecting electrodes, an ECG signal detecting circuit having detecting electrodes, a signal processing circuit and an output device. The impedance signal detecting circuit and ECG signal detecting circuit respectively, defect the impedance signal and ECG signal, the signal whereby processing circuit divides the impedance signal into cycles according to an R wave sequence, then performs linear interpolating for each cycle and in-phase superposing-averaging for a certain number of cycles, and restores the impedance waveform according to a predetermined number of interpolating points used for each cycle, so as to automatically trace arrhythmia and eliminate respiration interference to the impedance rheogram.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: June 25, 1991
    Assignee: Harbin Polytechnic University
    Inventors: Shuyong Shao, Jianhua Feng, Xinchao Zhang