Patents by Inventor Xin Hao

Xin Hao 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: 20150009729
    Abstract: A circuit includes a switching module, a control module, and a driving module. The driving module is electrically coupled between the control module and the switching module for generating a driving signal. The driving module includes a normal driving unit and a fault protection unit. The normal driving unit is for turning on and off the switching module according to a first command signal from the control module. The fault protection unit is for lowering the driving signal from a driving value to a protection value according to a second command signal from the control module during a fault protection period after the control module receives a fault signal.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Inventors: Tao WU, Ying ZHANG, Laigui QIN, Yingqi ZHANG, Fan ZHANG, Xin HAO
  • Patent number: 8788115
    Abstract: A method of detecting an abnormal driving includes receiving a RF signal transmitted from a vehicle in front; performing digital down conversion on the RF signal to obtain a baseband digital signal; performing frequency shift detection on the baseband digital signal to obtain frequency shift between the received RF signal and the RF signal transmitted from the vehicle in front; and determining that the abnormal driving condition in front exists response to determining that the frequency shift has reached a set threshold.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: July 22, 2014
    Assignee: International Business Machines Corporation
    Inventors: Xin Hao Cheng, Guoqiang Hu, Li Jun Mei, Bo Yang, Yu Yuan
  • Patent number: 8781646
    Abstract: A method of detecting an abnormal driving includes receiving a RF signal transmitted from a vehicle in front; performing digital down conversion on the RF signal to obtain a baseband digital signal; performing frequency shift detection on the baseband digital signal to obtain frequency shift between the received RF signal and the RF signal transmitted from the vehicle in front; and determining that the abnormal driving condition in front exists response to determining that the frequency shift has reached a set threshold.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: July 15, 2014
    Assignee: International Business Machines Corporation
    Inventors: Xin Hao Cheng, Guoqiang Hu, Li Jun Mei, Bo Yang, Yu Yuan
  • Publication number: 20140104911
    Abstract: A circuit includes first and second electronic switches, first and second excitation circuits, and first and second inductors. The first and second electronic switches are electrically coupled in series. The first and second excitation circuits are used for respectively controlling the first and second electronic switches to be turned on and turned off and are configured to synchronously switch the first and second electronic switches. The first inductor is electrically coupled between the first excitation circuit and the first electronic switch, for transmitting the switch control signal of the first excitation circuit to the first electronic switch. The second inductor is electrically coupled between the second excitation circuit and the second electronic switch, for transmitting the switch control signal of the second excitation circuit to the second electronic switch.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 17, 2014
    Inventors: Tao Wu, Yingqi Zhang, Fan Zhang, Kunlun Chen, Xin Hao
  • Publication number: 20140039718
    Abstract: A method of detecting an abnormal driving includes receiving a RF signal transmitted from a vehicle in front; performing digital down conversion on the RF signal to obtain a baseband digital signal; performing frequency shift detection on the baseband digital signal to obtain frequency shift between the received RF signal and the RF signal transmitted from the vehicle in front; and determining that the abnormal driving condition in front exists response to determining that the frequency shift has reached a set threshold.
    Type: Application
    Filed: August 16, 2013
    Publication date: February 6, 2014
    Applicant: International Business Machines Corporation
    Inventors: Xin Hao Cheng, Guoqiang Hu, Li Jun Mei, Bo Yang, Yu Yuan
  • Publication number: 20140035773
    Abstract: A method of detecting an abnormal driving includes receiving a RF signal transmitted from a vehicle in front; performing digital down conversion on the RF signal to obtain a baseband digital signal; performing frequency shift detection on the baseband digital signal to obtain frequency shift between the received RF signal and the RF signal transmitted from the vehicle in front; and determining that the abnormal driving condition in front exists response to determining that the frequency shift has reached a set threshold.
    Type: Application
    Filed: July 25, 2013
    Publication date: February 6, 2014
    Applicant: International Business Machines Corporation
    Inventors: Xin Hao Cheng, Guoqiang Hu, Li Jun Mei, Bo Yang, Yu Yuan
  • Publication number: 20090235213
    Abstract: Techniques for reducing the complexity of Electronic Design Automation Layout-Versus-Schematic algorithms to approximately O(n) for graphs without type-3 symmetries.
    Type: Application
    Filed: October 8, 2008
    Publication date: September 17, 2009
    Inventors: Xin Hao, Fedor G. Pikus, Thomas L. Quarles