Patents by Inventor Clifford W. T. WEBB

Clifford W. T. WEBB 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).

  • Voltage-controlled stepper motor driver
    Patent number: 8536822
    Abstract: A stepper motor driver system includes: a digital signal controller configured to digitally synthesize synthesized analog voltage signals that will induce a desired velocity of a stepper motor when applied to a pair of stepper motor windings; and voltage amplifiers, communicatively coupled to the digital signal controller, configured to amplify the synthesized analog voltage signals to produce amplified analog voltage signals and to output the amplified analog voltage signals; where the digital signal controller is configured to synthesize the analog voltage signals by affecting at least one of a phase or an amplitude of each of the analog voltage signals as a function of the desired velocity of the stepper motor.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: September 17, 2013
    Assignee: Pelco, Inc.
    Inventors: Clifford W. T. Webb, Brian F. Reilly
  • VOLTAGE-CONTROLLED STEPPER MOTOR DRIVER
    Publication number: 20110234143
    Abstract: A stepper motor driver system includes: a digital signal controller configured to digitally synthesize synthesized analog voltage signals that will induce a desired velocity of a stepper motor when applied to a pair of stepper motor windings; and voltage amplifiers, communicatively coupled to the digital signal controller, configured to amplify the synthesized analog voltage signals to produce amplified analog voltage signals and to output the amplified analog voltage signals; where the digital signal controller is configured to synthesize the analog voltage signals by affecting at least one of a phase or an amplitude of each of the analog voltage signals as a function of the desired velocity of the stepper motor
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Inventors: Clifford W. T. WEBB, Brian F. Reilly