Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-08-06
1978-10-17
Robinson, Thomas A.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
179 15A, H04J 300
Patent
active
041212177
ABSTRACT:
Disclosed is a data transmission network having an improved interface unit for matching the network to local subscriber loops. It is particularly constructed for the translation of supervisory signals in private and switched line systems. A switched channel logic circuit comprising an assembler and parallel to serial converter is provided for each data channel and these circuits connect to a common logic circuit comprising a combiner in the form of a shifter and a matrix of shift registers.
REFERENCES:
patent: 3497627 (1970-02-01), Blasbalg et al.
patent: 3639693 (1972-02-01), Bartlett et al.
patent: 3794768 (1974-02-01), Carney et al.
patent: 3823401 (1974-07-01), Berg et al.
patent: 3824597 (1974-07-01), Berg
patent: 3826872 (1974-07-01), MacGregor
patent: 3856993 (1974-12-01), Closs et al.
"Signal Multiplexing", Author not named; from Transmission Systems for Communications, Bell Labs Staff, 1970; Chap. 6, p. 144.
Bowyer Jesse C.
Robinson Thomas A.
Southern Pacific Communications Company (SPCC)
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