Patents by Inventor Richard E. Boucher

Richard E. Boucher 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).

  • Semiconductor integrated circuit and communication device for logic input-state control during and following power-up
    Patent number: 6630845
    Abstract: The present invention provides a semiconductor integrated circuit device and a communication device incorporating same. Two MOS (strong and weak) devices are connected to each control input of a transceiver. Both MOS devices are turned on while the supply voltage is ramping from 0V. The strong device remains on for a period of 10-20 microseconds. The strong MOS device pulls the input to a disabled state against external capacitance which is attempting to pull the input to an enabled state. The weak MOS device remains on while pulling the input to a disabled state. The input is pulled to an enabled state when an external source overcomes the weak MOS device. Once the control input is pulled beyond the input voltage threshold to the enabled state, the weak MOS device will be turned off permanently and the input will revert to a standard CMOS input with infinite input resistance.
    Type: Grant
    Filed: April 13, 2001
    Date of Patent: October 7, 2003
    Assignee: Maxim Integrated Products, Inc.
    Inventor: Richard E. Boucher
  • Semiconductor integrated circuit and communication device for logic input-state control during and following power-up
    Publication number: 20030107416
    Abstract: The present invention provides a semiconductor integrated circuit device and a communication device incorporating same. Two MOS (strong and weak) devices are connected to each control input of a transceiver. Both MOS devices are turned on while the supply voltage is ramping from 0V. The strong device remains on for a period of 10-20 microseconds. The strong MOS device pulls the input to a disabled state against external capacitance which is attempting to pull the input to an enabled state. The weak MOS device remains on while pulling the input to a disabled state. The input is pulled to an enabled state when an external source overcomes the weak MOS device. Once the control input is pulled beyond the input voltage threshold to the enabled state, the weak MOS device will be turned off permanently and the input will revert to a standard CMOS input with infinite input resistance.
    Type: Application
    Filed: April 13, 2001
    Publication date: June 12, 2003
    Inventor: Richard E. Boucher
  • Phase-frequency compare circuit for phase lock loop
    Patent number: 4804928
    Abstract: A phase-locked loop circuit having a charge pump and a voltage controlled oscillator which includes a phase/frequency comparator having a single circuit for operating in phase or frequency modes and which uses the discharge signal from the oscillator flip flop to trigger resetting of the input flip flop and which uses a one-shot in the phase compare mode for high frequency operation.
    Type: Grant
    Filed: May 12, 1987
    Date of Patent: February 14, 1989
    Assignee: Texas Instruments Incorporated
    Inventors: James E. Chloupek, Richard E. Boucher