Patents by Inventor Cao Dan

Cao Dan 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).

  • Emergency flush apparatus and method
    Patent number: 9464423
    Abstract: An emergency flush apparatus for a toilet includes a flush driver module, a battery, and a processing unit operatively connected to the battery and the flush driver module. The emergency flush apparatus further includes a flush switch operatively connected to the battery and the processing unit, and a primary power supply operatively connected to the flush driver module. When the flush switch is activated, the processing unit detects a state of the flush driver module. Power is then supplied to the flush driver module from one of either the primary power supply or the battery in response to the detected state.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 11, 2016
    Assignee: SHANGHAI KOHLER ELECTRONICS, LTD.
    Inventors: Cao Dan, Zhu Minghui, Zhang Jie, Wang Yingfeng
  • Backlight driving circuit and liquid crystal display device
    Patent number: 9232595
    Abstract: A backlight driving circuit and a liquid crystal display device are disclosed. The backlight driving circuit is utilized for driving at least one light emitting diode bar and includes a power supply module, a conversion module, a comparison module, and a control module. The power supply module provides a driving current for the light emitting diode bar. The conversion module generates a conversion voltage according to the driving current. The comparison module compares the conversion voltage with a reference voltage. The control module controls whether the power supply module provides the driving current for the light emitting diode bar according to whether the conversion voltage is greater than the reference voltage. The backlight driving circuit and the liquid crystal display device of the present invention can limit the driving current flowing through the light emitting diode bar.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: January 5, 2016
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO. LTD.
    Inventor: Cao Dan
  • EMERGENCY FLUSH APPARATUS AND METHOD
    Publication number: 20140237712
    Abstract: An emergency flush apparatus for a toilet includes a flush driver module, a battery, and a processing unit operatively connected to the battery and the flush driver module. The emergency flush apparatus further includes a flush switch operatively connected to the battery and the processing unit, and a primary power supply operatively connected to the flush driver module. When the flush switch is activated, the processing unit detects a state of the flush driver module. Power is then supplied to the flush driver module from one of either the primary power supply or the battery in response to the detected state.
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Inventors: Cao Dan, Zhu Minghui, Zhang Jie, Wang Yingfeng