Patents by Inventor Jeffery E. Bills

Jeffery E. Bills 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).

  • Imaging circuit and method of spatial compensation
    Patent number: 6583816
    Abstract: An imaging system (10) and method compensate for different amplitudes of pixel signals generated by photoactive devices in an optical sensor (32) whose responses to projected light are not uniform. The sensor is divided into regions (52) such that the response of the photoactive devices within a region are substantially equal. A processing circuit (34) compensates for different responses among different regions with a programmable gain amplifier (72) whose gain is dynamically adjusted when pixel signals generated in different regions are received.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: June 24, 2003
    Assignee: Motorola, Inc.
    Inventors: Steven M. Domer, Jeffery E. Bills
  • Method and apparatus for enhanced security of a data processor
    Patent number: 5642480
    Abstract: A security system for a data processor. The data processor includes a register storage area (14) and a main memory storage area (16). The register storage area (14) and the main memory storage areas (16) are defined to assure that as a voltage is varied, that the integrity of the register storage area (14) is guaranteed longer than the integrity of the main memory storage area (16).
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: June 24, 1997
    Assignee: Motorola, Inc.
    Inventors: Paul M. Brownlee, Jeffery E. Bills