Telephonic communications – Repeater – With frequency discriminator or negative impedance element
Patent
1986-01-09
1989-11-21
Ng, Jin F.
Telephonic communications
Repeater
With frequency discriminator or negative impedance element
379347, 379338, H04B 336
Patent
active
048827495
ABSTRACT:
Circuits embodying the invention include apparatus for sensing the amplitude and the frequency of the signals received from one section of a telephone cable and for propagating onto the succeeding section of telephone cable only those received signals having an amplitude greater than a predetermined level and whose frequency is within the predetermined range.
REFERENCES:
patent: 1968460 (1934-07-01), Llewellyn
patent: 2170941 (1939-08-01), Davis
patent: 2206146 (1940-07-01), Wright
patent: 2607860 (1952-08-01), Skillman
patent: 3483336 (1969-12-01), Lent
patent: 3651265 (1972-03-01), Van Der Houwen
patent: 3784749 (1974-01-01), Shigeyama et al.
patent: 3803357 (1974-04-01), Sacks
patent: 3873775 (1975-03-01), Chown
patent: 3879583 (1975-04-01), Rooks
patent: 4135590 (1979-01-01), Gaulder
patent: 4143325 (1979-03-01), Kahn
patent: 4352962 (1982-10-01), LaMothe
patent: 4358738 (1982-11-01), Kahn
patent: 4475209 (1984-10-01), Udren
patent: 4609878 (1986-09-01), Rodgers
"Design of an Integrated Circuit for the TlC Low-Power Line Repeater", by Paul C. Davis et al., IEEE Journal of Solid-State Circuits, vol. SC-14, No. 1, Feb. 1979.
Harris Semiconductor (Patents) Inc.
Ng Jin F.
Schanzer H. I.
Shanley W. J.
Vaas Randall S.
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