Patents by Inventor Jie-guang Zhang

Jie-guang 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).

  • Fan speed control device
    Patent number: 7615946
    Abstract: A fan speed control device includes a management selection module, a first and a second buffers, a resistor, a transistor, and a switch. Depending upon whether a motherboard supports a system of a baseboard management control or not, the fan speed control device selectively uses an indicative signal of a serial input and output interface or an indicative signal of the baseboard management control to indicate a power-on status. At the power-on moment, the fan speed control device controls the fan to operate at its minimum speed, so that a system crash due to a power output shortage of a power supply can be avoided. As the system enters stable operation, the fan speed is controlled by a pulse width modulation signal.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: November 10, 2009
    Assignee: Inventec Corporation
    Inventors: Jie-guang Zhang, Shih-Hao Liu
  • FAN SPEED CONTROL DEVICE
    Publication number: 20090116823
    Abstract: A fan speed control device includes a management selection module, a first and a second buffers, a resistor, a transistor, and a switch. Depending upon whether a motherboard supports a system of a baseboard management control or not, the fan speed control device selectively uses an indicative signal of a serial input and output interface or an indicative signal of the baseboard management control to indicate a power-on status. At the power-on moment, the fan speed control device controls the fan to operate at its minimum speed, so that a system crash due to a power output shortage of a power supply can be avoided. As the system enters stable operation, the fan speed is controlled by a pulse width modulation signal.
    Type: Application
    Filed: January 17, 2008
    Publication date: May 7, 2009
    Applicant: INVENTEC CORPORATION
    Inventors: Jie-guang Zhang, Shih-Hao Liu