Patents by Inventor Shih Y. Tong

Shih Y. Tong 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).

  • Voiceband data set
    Patent number: 4419756
    Abstract: A full duplex, synchronous data set (10) includes primary signal processing circuitry which generates a modulated transmit data signal in response to serial data from a terminal interface (17). The modulated data signal is transmitted over a primary channel of a transmit line (11). The primary signal processing circuitry also receives modulated data signals from a primary channel of a receive line (12) and recovers therefrom a serial bit stream for presentation to the interface. The operating parameters of the primary signal processing circuitry are specified by a primary controller (30) over a plurality of buses (PA, PC, PD). The primary controller includes a microprocessor (310) and associated peripherals (315, 320, 325, 330, 335). The data set also includes secondary signal processing circuitry (40) which transmits and receives diagnostic and control information over respective secondary channels of the transmit line and receive lines.
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: December 6, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Enrique Cheng-Quispe, Thomas M. Dennis, Emanuel J. Fulcomer, Jr., George Malek, Shih Y. Tong
  • Voiceband data set
    Patent number: RE33380
    Abstract: A full duplex, synchronous data set (10) includes primary signal processing circuitry which generates a modulated transmit data signal in response to serial data from a terminal interface (17). The modulated data signal is transmitted over a primary channel of a transmit line (11). The primary signal processing circuitry also receives modulated data signals from a primary channel of a receive line (12) and recovers therefrom a serial bit stream for presentation to the interface. The operating parameters of the primary signal processing circuitry are specified by a primary controller (30) over a plurality of buses (PA, PC, PD). The primary controller includes a microprocessor (310) and associated peripherals (315, 320, 325, 330, 335). The data set also includes secondary signal processing circuitry (40) which transmits and receives diagnostic and control information over respective secondary channels of the transmit line and receive lines.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: October 9, 1990
    Assignee: AT&T Bell Laboratories
    Inventors: Enrique Cheng-Quispe, Thomas M. Dennis, Emanuel J. Fulcomer, Jr., George Malek, Shih Y. Tong