Patents by Inventor Michael R. Sollins

Michael R. Sollins 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).

  • Scan insertion testing of ASICs
    Patent number: 6988207
    Abstract: A circuit that uses a bi-directional buffer as follows: First a tri-state output buffer is connected to a functional clock and a bi-directional port is connected to a test clock. The bi-directional buffer is configured to receive control signals to selectively block and unblock the tri-state output port connected to the functional clock. In addition, the bi-directional port connected to a test clock is connected to the internal logic of the device. When the tri-state output buffer connected to the functional clock is blocked, the test clock transmits a clock signal to the internal logic of the device. When the tri-state output buffer connected to the functional clock is unblocked, the functional clock transmits a clock signal to the internal logic of the device.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: January 17, 2006
    Assignee: ADC DSL Systems, Inc.
    Inventors: Yiu Lam Chan, Michael R. Sollins, Ronald R. Munoz
  • Software controlled ring voltage generator
    Patent number: 6954531
    Abstract: A ring voltage generator uses values stored in random access memory to generate a train of pulses used to drive a voltage waveform to ring a telephone ringer. The values are stored in RAM, and are programmable by a user without requiring a change in the ring voltage generator design.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: October 11, 2005
    Assignee: ADC DSL Systems, Inc.
    Inventor: Michael R. Sollins
  • Scan insertion testing of ASICs
    Publication number: 20020194561
    Abstract: A circuit that uses a bi-directional buffer as follows: First a tri-state output buffer is connected to a functional clock and a bi-directional port is connected to a test clock. The bi-directional buffer is configured to receive control signals to selectively block and unblock the tri-state output port connected to the functional clock. In addition, the bi-directional port connected to a test clock is connected to the internal logic of the device. When the tri-state output buffer connected to the functional clock is blocked, the test clock transmits a clock signal to the internal logic of the device. When the tri-state output buffer connected to the functional clock is unblocked, the functional clock transmits a clock signal to the internal logic of the device.
    Type: Application
    Filed: June 15, 2001
    Publication date: December 19, 2002
    Applicant: ADC DSL Systems, Inc.
    Inventors: Yiu Lam Chan, Michael R. Sollins, Ronald R. Munoz
  • Software controlled ring voltage generator
    Publication number: 20020191780
    Abstract: A ring voltage generator uses values stored in random access memory to generate a train of pulses used to drive a voltage waveform to ring a telephone ringer. The values are stored in RAM, and are programmable by a user without requiring a change in the ring voltage generator design.
    Type: Application
    Filed: June 15, 2001
    Publication date: December 19, 2002
    Applicant: ADC DSL Systems, Inc.
    Inventor: Michael R. Sollins