Pager with reverse paging facility

Details Pager with reverse paging facility Pager with reverse paging facility

1992-10-15

1994-08-02

Cain, David C.

Pulse or digital communications

Repeaters

Testing

34082544, 34082554, 34082547, 370 57, 370 58, 455 311, G08B 522

Patent

active

053352467

ABSTRACT:
Position determining apparatus including at least one base station including a base transmitter which periodically transmits timing signals and a plurality of mobile remote units. Each remote unit includes a mobile receiver operative to receive timing signals transmitted by at least one base transmitter; synchronization circuitry receiving the timing signals and providing a spread-spectrum frequency-hopping sequence characteristic of the particular remote unit; a mobile transmitter producing a radiated frequency-hopped signal responsive to the frequency-hopping sequence and the timing signal; and a message generator operative to modify the radiated frequency-hopped signal to transmit a message to the at least one base station. least one base station.

REFERENCES:
patent: Re32365 (1987-03-01), Sebestyen
patent: 3223779 (1965-12-01), McFarlane
patent: 3384822 (1968-05-01), Miyagi
patent: 3447085 (1969-05-01), Haas et al.
patent: 3493866 (1970-02-01), Miller
patent: 3706933 (1972-12-01), Bidell et al.
patent: 3824468 (1974-07-01), Zegers et al.
patent: 3972042 (1976-07-01), Johnson
patent: 4030033 (1977-06-01), Bibl et al.
patent: 4053889 (1977-10-01), Johnson
patent: 4079378 (1978-03-01), Hulderman
patent: 4114155 (1978-09-01), Rash
patent: 4152702 (1979-05-01), Piesinger
patent: 4156877 (1979-05-01), Piesinger
patent: 4188629 (1980-02-01), Johnson
patent: 4193030 (1980-03-01), Rabow et al.
patent: 4222115 (1980-09-01), Cooper et al.
patent: 4229741 (1980-10-01), Groth
patent: 4267592 (1981-05-01), Craglow
patent: 4309703 (1982-01-01), Biahut
patent: 4403343 (1983-09-01), Hamada
patent: 4447907 (1984-05-01), Bjornholt
patent: 4479227 (1984-10-01), Bjornholt
patent: 4494238 (1985-01-01), Groth, Jr.
patent: 4545059 (1985-10-01), Spinks, Jr. et al.
patent: 4578819 (1986-03-01), Shimizu
patent: 4611333 (1986-09-01), McCallister et al.
patent: 4644351 (1987-02-01), Zabarsky et al.
patent: 4665404 (1987-05-01), Christy et al.
patent: 4694466 (1987-09-01), Kadin
patent: 4701934 (1987-10-01), Jasper
patent: 4740792 (1988-04-01), Sagey et al.
patent: 4750036 (1988-06-01), Martinez
patent: 4785463 (1988-11-01), Jane
patent: 4811379 (1989-03-01), Grandfield
patent: 4823123 (1989-04-01), Siwiak
patent: 4825193 (1989-04-01), Siwiak et al.
patent: 4866732 (1989-09-01), Carey et al.
patent: 4868560 (1989-09-01), Oliwa et al.
patent: 4875038 (1989-10-01), Siwiak et al.
patent: 4882579 (1989-11-01), Siwiak
patent: 4891637 (1990-01-01), Siwiak et al.
patent: 4928177 (1990-05-01), Martinez
patent: 5005183 (1991-04-01), Carey et al.
patent: 5017926 (1991-05-01), Ames
patent: 5063560 (1991-11-01), Yerbury et al.
patent: 5073899 (1991-12-01), Collier et al.
patent: 5073900 (1991-12-01), Mallinckrodt
patent: 5099245 (1992-03-01), Sagey
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5105435 (1992-04-01), Stilwell
patent: 5111478 (1992-05-01), Stilwell
patent: 5142279 (1992-08-01), Jasinski et al.
patent: 5142534 (1992-08-01), Simpson et al.
patent: 5144668 (1992-09-01), McDonald
patent: 5148452 (1992-09-01), Kennedy et al.
patent: 5153582 (1992-10-01), Davis
patent: 5155742 (1992-10-01), Ariyavisitakul et al.
patent: 5164958 (1992-11-01), Omura
patent: 5191593 (1993-03-01), McDonald et al.
patent: 5193101 (1993-03-01), McDonald et al.
patent: 5193102 (1993-03-01), Meidan et al.
patent: 5204876 (1993-04-01), Bruckert et al.
patent: 5210771 (1993-05-01), Schseffer et al.
patent: 5212831 (1993-05-01), Chuang et al.
patent: 5222101 (1993-06-01), Ariyavisitakul et al.
patent: 5224121 (1993-06-01), Schorman
patent: 5226045 (1993-07-01), Chuang
patent: 5235615 (1993-08-01), Omura
patent: 5239677 (1993-08-01), Jasinski
patent: 5267261 (1993-11-01), Blakeney, II et al.
Revue Technique Thompson-CFS by J. Lautier, entitled Reseau de radiocommunication numerique en Duplex Temporel (.sup.1), vol. 10, No. 3, dated Sep. 1978. (Exhibit A).
Proakis "Spread Spectrum Signals", Digital Communications, second edition; pp. 845-860.

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