Patents by Inventor Howard Y. M. Tang

Howard Y. M. Tang 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).

  • Method and structure dynamic in-system programming
    Patent number: 6356107
    Abstract: An input/output circuit in an In-system programmable (ISP) logic device allows an output signal from a boundary scan register to be provided as output during programming operations of said ISP logic device. Thus, the ISP logic circuit can provide valid data output to other circuits interfaced to the ISP logic circuit during programming of the ISP logic device, thereby obviating a need to reset the system after reprogramming of the ISP logic device.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: March 12, 2002
    Assignee: Lattice Semiconductor Corporation
    Inventors: Howard Y. M. Tang, Albert Chan, Cyrus Y. Tsui, Ju Shen
  • Method and structure for dynamic in-system programming
    Patent number: 6304099
    Abstract: An input/output circuit in an In-system programmable (ISP) logic device allows an output signal from a boundary scan register to be provided as output during programming operations of said ISP logic device. Thus, the ISP logic circuit can provide valid data output to other circuits interfaced to the ISP logic circuit during programming of the ISP logic device, thereby obviating a need to reset the system after reprogramming of the ISP logic device.
    Type: Grant
    Filed: May 21, 1998
    Date of Patent: October 16, 2001
    Assignee: Lattice Semiconductor Corporation
    Inventors: Howard Y. M. Tang, Albert Chan, Cyrus Y. Tsui, Ju Shen
  • Sequential and simultaneous manufacturing programming of multiple in-system programmable systems through a data network
    Patent number: 6023570
    Abstract: An in-system programmable (ISP) system, having a plurality of ISP devices, can be programmed by remote access from a host controller. The remote access can be accomplished over a wired data network, a wireless data network such as an infra-red data network and a radio wave data network, or a hybrid network including both a wired data network portion and a wireless data network portion. An access interface connects the host controller to an ISP programmer over the wired or wireless communication link. The ISP programmer programs the ISP system in accordance with ISP programming conventions. The ISP programmer can be provided by an integrated circuit having a microprocessor core.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: February 8, 2000
    Assignee: Lattice Semiconductor Corp.
    Inventors: Howard Y. M. Tang, Cyrus Y. Tsui, Albert Chan
  • Method for simultaneous programming of in-system programmable integrated circuits
    Patent number: 5635855
    Abstract: Multiple in-system programmable devices are connected in series to a programming controller for simultaneous programming. One embodiment puts all such in-system programmable devices in programming mode, and to receive programming data and programming instruction simultaneously. In that configuration, all devices begins programming and stops programming simultaneously.
    Type: Grant
    Filed: July 21, 1995
    Date of Patent: June 3, 1997
    Assignee: Lattice Semiconductor Corporation
    Inventor: Howard Y. M. Tang