Cellular telephone with pager

Details Cellular telephone with pager Cellular telephone with pager

1990-11-16

1993-09-21

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

4551802, 455228, 34082544, H04Q 700

Patent

active

052477002

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.

REFERENCES:
patent: 3575558 (1971-04-01), Leyburn et al.
patent: 3641276 (1972-02-01), Keller
patent: 3714375 (1973-01-01), Stover
patent: 3818145 (1974-06-01), Hanway
patent: 3836726 (1974-09-01), Wells
patent: 3902022 (1975-08-01), Breeden
patent: 4013958 (1977-03-01), Spayth
patent: 4072824 (1978-02-01), Phillips
patent: 4149125 (1979-04-01), Ikeguchi
patent: 4178475 (1979-12-01), Taylor et al.
patent: 4178476 (1979-12-01), Frost
patent: 4180776 (1979-12-01), Lindemann
patent: 4249165 (1981-02-01), Mori
patent: 4273962 (1981-06-01), Wolfe
patent: 4276654 (1981-06-01), Nations et al.
patent: 4280104 (1981-07-01), Rzeszewski
patent: 4303893 (1981-12-01), Goldberg
patent: 4314208 (1982-02-01), Munday
patent: 4383257 (1983-05-01), Giallanza
patent: 4388596 (1983-06-01), Yamashita
patent: 4392135 (1983-07-01), Ohyagi
patent: 4397037 (1983-08-01), Theriault
patent: 4403212 (1983-09-01), Masaki
patent: 4408099 (1983-10-01), Ishii
patent: 4419765 (1983-12-01), Wycoff
patent: 4431991 (1984-02-01), Bailey et al.
patent: 4434504 (1984-02-01), Fredrickson
patent: 4434506 (1984-02-01), Fujiwara
patent: 4464638 (1984-08-01), Crowley
patent: 4490579 (1984-12-01), Godoshian
patent: 4556760 (1985-12-01), Goldman
patent: 4577060 (1986-03-01), Webb et al.
patent: 4597104 (1986-06-01), Ohki
patent: 4644347 (1987-02-01), Lucas
patent: 4734694 (1988-03-01), Umetsu
patent: 4736171 (1988-04-01), Minarik
patent: 4747122 (1988-05-01), Bhagar et al.
patent: 4775999 (1988-10-01), Williams
patent: 4849750 (1989-07-01), Andros et al.
patent: 5054052 (1991-10-01), Nonami
H610, Focarice et al., Mar. 7, 1989, "Cellular Pager".

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