Patents by Inventor Clarke J. Calvin

Clarke J. Calvin 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).

  • Receiver incorporating an other users noise simulator (OUNS) for use in a communication system
    Patent number: 5519888
    Abstract: A received signal is provided to an automatic gain controller which normalizes the received signal to a known voltage level. The automatic gain controller is also provided with an OUNS noise signal through a voltage controlled attenuator. The voltage controlled attenuator (VCA) is controlled by an OUNS controller such that the output of the VCA represents the desired other user noise level to be combined with the received signal in the automatic gain controller.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: May 21, 1996
    Assignee: Motorola, Inc.
    Inventors: Scott M. Hall, Clarke J. Calvin
  • Voltage controlled oscillator with filtered and compensated modulation
    Patent number: 5075644
    Abstract: Briefly, according to the invention, a voltage controlled oscillator 200 having a control input, an information signal input, and an output is disclosed. The voltage controlled oscillator 200 comprises a tank circuit 202 for generating a carrier signal and a modulator 206 for modulating the carrier signal in response to the information signal 210 at the information signal input of the voltage controlled oscillator 200. The voltage controlled oscillator 200 includes a filter 208 coupling the modulator 206 to the tank circuit 202 for rejecting out of band signals from altering the bias point of the modulator 206.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: December 24, 1991
    Assignee: Motorola, Inc.
    Inventor: Clarke J. Calvin