Patents Assigned to Universal Cellular, Inc.
  • Patent number: 5247700
    Abstract: A compact and unitary cellular/pager. The cellular/pager includes a cellular antenna for receiving UHF cellular and paging signals. The cellular/pager also includes a VHF paging antenna. Every paging signal is sent to a paging receiver. The paging receiver uses the same circuitry to process either the UHF or VHF page. This is accomplished by setting a voltage controlled oscillator (VCO) to one of two frequency ranges. The chosen frequency is either added or subtracted to the incoming signal in order to match a constant intermediate frequency. The resultant signal is demodulated and a bit rate is selected by a decoder, under the control of a microprocessor. Therefore, the paging receiver can choose a band, a channel and a bit rate. Cellular signals are sent to a cellular block. Cellular location information is utilized by the cellular/pager to form an internally updated roaming pager.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: September 21, 1993
    Assignee: Universal Cellular, Inc.
    Inventors: James P. Wohl, W. Edward Naugler, Jr., James Hendershot, Graham P. Lloyd, Erich B. Adams
  • Patent number: D319053
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: August 13, 1991
    Assignee: Universal Cellular, Inc.
    Inventor: Warren Atkins
  • Patent number: D327059
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: June 16, 1992
    Assignee: Universal Cellular, Inc.
    Inventors: Robin Chu, James P. Wohl