Patents by Inventor Hsiang Chuan Sung

Hsiang Chuan Sung 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).

  • PULSE WIDTH MODULATION AND VOLTAGE TEST SIGNALS FOR FAN TYPE DETECTION
    Publication number: 20220206548
    Abstract: An example non-transitory machine-readable storage medium includes instructions to determine whether a cooling fan is controlled by pulse wave modulation (PWM) or is voltage-controlled. When executed, the instructions cause a processor of a computing device to transmit first and second PWM test signals at different PWM duties to a fan connector connected to the cooling fan, receive a first and second fan speed signals in response, and determine, when the first fan speed signal is not equal to the second fan speed signal, that the cooling fan is a PWM-controlled fan. The instructions further cause the processor to transmit first and second voltage test signals at different voltages to the fan connector, receive a third fan and fourth speed signal in response, and determine, when the third fan speed signal is not equal to the fourth fan speed signal, that the cooling fan is a voltage-controlled fan.
    Type: Application
    Filed: July 24, 2019
    Publication date: June 30, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Hsiang Chuan Sung, Chien Hao Chen, Fu-Yi Chen, Yi-Hsuan Huang, Chi-feng Chen