Cellular telephone with pager

• US 5,247,700 A
• Filed: 11/16/1990
• Issued: 09/21/1993
• Est. Priority Date: 11/16/1990
• Status: Expired due to Fees

• Current Assignee: Universal Cellular Incorporated
• Original Assignee: Universal Cellular Incorporated
• Inventors: Adams, Erich B., Naugler, W. Edward Jr., Hendershot, James, Wohl, James P., Lloyd, Graham P.
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): URBAN, EDWARD F
• Application Number:
  US07/614,302
• Time in Patent Office: 1,040 Days
• Field of Search: 455/32.1, 455/33.1, 455/38.1, 455/38.4, 455/54.1, 455/89, 455/180.1, 455/180.2, 455/189.1, 455/190.1, 455/196.1, 455/228, 455/258, 455/349, 455/351, 340/825.44, 379/58, 379/59, 379/60
• US Class Current: 455/552.1
• CPC Class Codes: G08B 5/228 combined with other devices having a different main function, e.g. watches
• CPC Class Codes: H04M 1/0235 Slidable or telescopic telephones, i.e. with a relative translation movement of the body parts; Telephones using a combination of translation and other relative motions of the body parts
• CPC Class Codes: H04W 84/022 One-way selective calling networks, e.g. wide area paging
• CPC Class Codes: H04W 88/02 Terminal devices

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. That is, the cellular location information is automatically conveyed by the cellular block, under the control of the microprocessor, to a paging service. The paging service then knows the location of the paging receiver, consequently the paging service can direct the pager to await for a page at a single frequency, thereby eliminating frequency scanning by the pager or manual updates by the user.

Claims

1. An apparatus for receiving VHF and UHF paging signals and for receiving and transmitting cellular signals, comprising:

(A) first means for receiving VHF paging signals;

(B) second means for receiving and transmitting UHF cellular signals, said second means including a triplexer and a cellular block said second means further including means for receiving UHF paging signals;

(C) a microprocessor;

(D) a summing network, coupled to said first means and said second means, said summing network summing said VHF paging signals from said first means and said UHF paging signals from said second means;

(E) a paging receiver coupled to said summing network, said paging receiver including,

(1) a single circuit for processing said VHF paging signals and said UHF paging signals, said circuit including a local oscillator controlled by said microprocessor, said local oscillator being set to either a first frequency selected from a first frequency range or a second frequency selected from a second frequency range, said first frequency being added to said VHF paging signals and said second frequency being subtracted from said UHF paging signals;

(2) a demodulator;

(3) a decoder, said microprocessor controlling said decoder and said local oscillator, such that said apparatus may select a band, channel and bit rate;

(F) means for processing and utilizing said UHF cellular signal to determine the location of said apparatus, whereby said second means for receiving and transmitting said UHF cellular signals are utilized to provide said location to a paging system, said paging system providing a paging signal, received by said paging receiver, defining a single frequency for said paging receiver to tune;

(G) an audio processor coupled to a microphone and an earphone;

(H) a keyboard coupled to said microprocessor;

(I) a display coupled to said microprocessor;

(J) a serial port coupled to said microprocessor;

(K) memory coupled to said microprocessor;

(L) a program stored in said memory whereby said microprocessor conveys information from said program on said display; and

(M) a compact housing enclosing (C) through (L).