Patents by Inventor Jyun-Ping Wang

Jyun-Ping 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).

  • LIGHT EMITTING DIODE DRIVING APPARATUS WITH VARIABLE OUTPUT CURRENT AND METHOD FOR THE SAME
    Publication number: 20150296581
    Abstract: A pulse width modulation control unit multiplies a value of a user side setting signal by a value of a dimming signal to obtain a pulse width modulation output current control signal. The pulse width modulation control unit sends the pulse width modulation output current control signal to a light emitting diode driving unit. The light emitting diode driving unit multiplies a value of the pulse width modulation output current control signal by a value of a maximum output current of the light emitting diode driving unit to obtain a light emitting diode pulse width modulation driving current. The light emitting diode driving unit drives a light emitting diode by the light emitting diode pulse width modulation driving current.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 15, 2015
    Applicant: Chicony Power Technology Co., Ltd.
    Inventors: Chao-Wei TSAI, Jyun-Ping WANG, Hung-Ta SHIH
  • Light emitting diode driving apparatus with variable output current and method for the same
    Patent number: 9161410
    Abstract: A pulse width modulation control unit multiplies a value of a user side setting signal by a value of a dimming signal to obtain a pulse width modulation output current control signal. The pulse width modulation control unit sends the pulse width modulation output current control signal to a light emitting diode driving unit. The light emitting diode driving unit multiplies a value of the pulse width modulation output current control signal by a value of a maximum output current of the light emitting diode driving unit to obtain a light emitting diode pulse width modulation driving current. The light emitting diode driving unit drives a light emitting diode by the light emitting diode pulse width modulation driving current.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: October 13, 2015
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Chao-Wei Tsai, Jyun-Ping Wang, Hung-Ta Shih
  • Ambient light sensor utilizing combination of filter layer and absoprtion layer to achieve similar sensitivity to the light as the human eye
    Patent number: 7538406
    Abstract: An ambient light sensor includes a substrate, a buffer layer formed on the substrate, an absorption layer formed on the buffer layer for absorbing the visible light, and a filter layer formed on the absorption layer for filtering infrared light and high-energy photon insensitive to human eye. The absorption layer is a PIN junction having a compositional graded intrinsic layer. The peak wavelength of responsivity spectrum of the ambient light sensor is very close to that of human eye.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: May 26, 2009
    Assignee: National Taiwan University
    Inventors: Hao-Hsiung Lin, Ta-Chun Ma, Yu-Ru Lin, Jyun-Ping Wang, Cheng-Hong Huang
  • AMBIENT LIGHT SENSOR
    Publication number: 20080179701
    Abstract: An ambient light sensor includes a substrate, a buffer layer formed on the substrate, an absorption layer formed on the buffer layer for absorbing the visible light, and a filter layer formed on the absorption layer for filtering infrared light and high-energy photon insensitive to human eye. The absorption layer is a PIN junction having a compositional graded intrinsic layer. The peak wavelength of responsivity spectrum of the ambient light sensor is very close to that of human eye.
    Type: Application
    Filed: May 4, 2007
    Publication date: July 31, 2008
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: Hao-Hsiung Lin, Ta-Chun Ma, Yu-Ru Lin, Jyun-Ping Wang, Cheng-Hong Huang