Patents by Inventor Baiqi Zhang

Baiqi 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).

  • Infrared ray generator for photoelectric finger pulse sensor
    Publication number: 20090101849
    Abstract: An infrared ray generator controlled by photoelectric finger pulse sensor comprises a carrier circuit, a photoelectric signal generating circuit, a photoelectric finger pulse signal receiving circuit, a signal anti-disturbing circuit, a carrier amplification circuit, a detecting and filtering circuit, a low pass amplifying circuit, an intelligent processing circuit, a voltage regulation circuit for triggering and controlling infrared ray lamp, and a power supply circuit for the infrared ray generator.
    Type: Application
    Filed: July 14, 2006
    Publication date: April 23, 2009
    Inventors: Renzhao Wu, Zhanggen Shou, Baiqi Zhang, Huagen Yan, Xin Wang