Digitized decoder-receiver for receiving call signal

Details Digitized decoder-receiver for receiving call signal Digitized decoder-receiver for receiving call signal

1984-12-19

1987-09-15

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

379 55, 379375, 455 31, H04B 700

Patent

active

046942920

ABSTRACT:
A novel method for receiving a numerical call signal which comprises assigning a certain call number to a specified person; transmitting an electromagnetic wave carrying the call number as the number of impulse; receiving the electromagnetic wave with a receiver, more particularly, a portable receiver; decoding the electromagnetic wave into low-frequency impulses of the number corresponding to the call number; and driving an alarm with the low-frequency impulses to call out the specified person.

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patent: 3181162 (1965-04-01), Cameron
patent: 3387270 (1968-06-01), Adlhoch et al.
patent: 3735351 (1973-05-01), Macheel
patent: 3909826 (1975-09-01), Schildmeier et al.
patent: 3973200 (1976-08-01), Akerberg
patent: 4173016 (1979-10-01), Dickson
patent: 4213009 (1980-07-01), Suzuki
patent: 4232296 (1980-11-01), Filipovic
patent: 4301335 (1981-11-01), Jucker et al.
patent: 4426637 (1984-01-01), Apple et al.

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