Patents by Inventor Meng-Hsun Lee

Meng-Hsun Lee 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).

  • Motor driving device
    Patent number: 7903955
    Abstract: A driving device is provided for controlling rotation of a motor. The driving device comprises an inputting module, a comparing module and a processing module. The inputting module includes a first current source, a first voltage source and a first capacitance. The first capacitance is coupled between the first current source and the first voltage source for charging/discharging and generating a voltage signal. The comparing module is coupled to the inputting module for comparing a selecting signal with the voltage signal and generating a comparing signal. The processing module is coupled to the comparing module and generates a control signal according to a clock signal and the comparing signal, wherein the driving device controls the rotation of the motor by the control signal.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: March 8, 2011
    Assignee: Princeton Technology Corporation
    Inventors: Chi-Lin Hsu, En-Hsun Hsiao, Meng-Hsun Lee
  • Device and method for driving a single phase motor
    Patent number: 7583042
    Abstract: A driving device is provided for controlling the rotation of a motor. The driving device comprises an input module, a comparing module and a processing module. The input module includes a voltage generating unit and a voltage adjusting unit to generate a comparing voltage. The voltage generating unit generates a voltage signal according to a basis voltage. The voltage adjusting unit is coupled to the voltage generating unit for adjusting the voltage signal and generating the comparing voltage according a reference voltage. The comparing module is coupled to the input module for comparing a selecting signal with the comparing voltage and generating a comparing signal. The processing module is coupled to the comparing module and generates a control signal according to the comparing signal. The driving device controls the rotation of the motor according to the control signal.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: September 1, 2009
    Assignee: Princeton Technology Corporation
    Inventors: Meng-Hsun Lee, Chi-Lin Hsu
  • Device and method for driving a single phase motor
    Publication number: 20090022483
    Abstract: A driving device is provided for controlling the rotation of a motor. The driving device comprises an input module, a comparing module and a processing module. The input module includes a voltage generating unit and a voltage adjusting unit to generate a comparing voltage. The voltage generating unit generates a voltage signal according to a basis voltage. The voltage adjusting unit is coupled to the voltage generating unit for adjusting the voltage signal and generating the comparing voltage according a reference voltage. The comparing module is coupled to the input module for comparing a selecting signal with the comparing voltage and generating a comparing signal. The processing module is coupled to the comparing module and generates a control signal according to the comparing signal. The driving device controls the rotation of the motor according to the control signal.
    Type: Application
    Filed: January 3, 2008
    Publication date: January 22, 2009
    Inventors: Meng-Hsun Lee, Chi-Lin Hsu
  • Motor driving device
    Publication number: 20080317444
    Abstract: A driving device is provided for controlling rotation of a motor. The driving device comprises an inputting module, a comparing module and a processing module. The inputting module includes a first current source, a first voltage source and a first capacitance. The first capacitance is coupled between the first current source and the first voltage source for charging/discharging and generating a voltage signal. The comparing module is coupled to the inputting module for comparing a selecting signal with the voltage signal and generating a comparing signal. The processing module is coupled to the comparing module and generates a control signal according to a clock signal and the comparing signal, wherein the driving device controls the rotation of the motor by the control signal.
    Type: Application
    Filed: February 6, 2008
    Publication date: December 25, 2008
    Inventors: Chi-Lin Hsu, En-Hsun Hsiao, Meng-Hsun Lee