Patents by Inventor Jian-Jhong ZENG

Jian-Jhong ZENG 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).

  • Patent number: 10146728
    Abstract: A USB control circuit of a USB hub device includes: an upstream MAC-layer circuit; a downstream MAC-layer circuit; a first USB PHY-layer circuit; a second USB PHY-layer circuit; a first switch circuit for communicating data with an upstream port through the first USB PHY-layer circuit; a second switch circuit for communicating data with a downstream port through the second USB PHY-layer circuit; a control signal transmission interface; a signal repeater circuit; and a control unit configured to operably control the first switch circuit and the second switch circuit through the control signal transmission interface, so that the first switch circuit selectively couples the upstream MAC-layer circuit or the signal repeater circuit with the first USB PHY-layer circuit, while the second switch circuit selectively couples the downstream MAC-layer circuit or the signal repeater circuit with the second USB PHY-layer circuit.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: December 4, 2018
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Chong Liu, Luo-Bin Wang, Jian-Jhong Zeng, Neng-Hsien Lin
  • Patent number: 9984024
    Abstract: A USB hub device includes an upstream port and a downstream port. A USB control circuit of the USB control circuit includes an upstream interface; a downstream interface; a first switch circuit for coupling with the upstream port; a second switch circuit for coupling with the downstream port; a control signal transmission interface coupled with the first switch circuit and the second switch circuit; and a control unit, coupled with the control signal transmission interface, configured to operably control the first switch circuit and the second switch circuit through the control signal transmission interface, so that the first switch circuit selectively couples one of the upstream interface and the second switch circuit with the upstream port, while the second switch circuit selectively couples one of the downstream interface and the first switch circuit with the downstream port.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 29, 2018
    Assignee: REALTEK SEMICONDUCTOR CORP.
    Inventors: Neng-Hsien Lin, Luo-Bin Wang, Chong Liu, Jian-Jhong Zeng
  • Publication number: 20170011001
    Abstract: A USB control circuit of a USB hub device includes: an upstream MAC-layer circuit; a downstream MAC-layer circuit; a first USB PHY-layer circuit; a second USB PHY-layer circuit; a first switch circuit for communicating data with an upstream port through the first USB PHY-layer circuit; a second switch circuit for communicating data with a downstream port through the second USB PHY-layer circuit; a control signal transmission interface; a signal repeater circuit; and a control unit configured to operably control the first switch circuit and the second switch circuit through the control signal transmission interface, so that the first switch circuit selectively couples the upstream MAC-layer circuit or the signal repeater circuit with the first USB PHY-layer circuit, while the second switch circuit selectively couples the downstream MAC-layer circuit or the signal repeater circuit with the second USB PHY-layer circuit.
    Type: Application
    Filed: June 23, 2016
    Publication date: January 12, 2017
    Applicant: Realtek Semiconductor Corp.
    Inventors: Chong LIU, Luo-Bin WANG, Jian-Jhong ZENG, Neng-Hsien LIN
  • Publication number: 20170010997
    Abstract: A USB hub device includes an upstream port and a downstream port. A USB control circuit of the USB control circuit includes an upstream interface; a downstream interface; a first switch circuit for coupling with the upstream port; a second switch circuit for coupling with the downstream port; a control signal transmission interface coupled with the first switch circuit and the second switch circuit; and a control unit, coupled with the control signal transmission interface, configured to operably control the first switch circuit and the second switch circuit through the control signal transmission interface, so that the first switch circuit selectively couples one of the upstream interface and the second switch circuit with the upstream port, while the second switch circuit selectively couples one of the downstream interface and the first switch circuit with the downstream port.
    Type: Application
    Filed: June 21, 2016
    Publication date: January 12, 2017
    Applicant: Realtek Semiconductor Corp.
    Inventors: Neng-Hsien LIN, Luo-Bin WANG, Chong LIU, Jian-Jhong ZENG