Data transmission system

Multiplex communications – Wide area network – Packet switching

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Details

370 86, 370 89, 370 97, H04J 316

Patent

active

042939488

ABSTRACT:
The main features of the present invention reside in the fact that one or more remote groups of subordinated terminal units are serially interconnected and arranged in a closed loop which is terminated at the output and input of a master unit. Each of said groups and said master unit is connected to the transmission line via a modulator and a demodulator. In order to selectively connect a pulse equipment associated with each subordinated terminal unit, and adapted for transmission of data, with the transmission line, each of said subordinated terminal units includes a switching unit, which either connects or disconnects the associated pulse equipment from the transmission line. According to the invention, the novelty resides both in the arrangement of the network connecting the subordinated terminal units with the master pulse equipment, and the procedure for the exchange of information between the master pulse equipment and the subordinated terminal unit, and vice versa, through the closed loop, and by selectively actuating said switching unit.

REFERENCES:
patent: Re21284 (1939-12-01), Boswau
patent: 2091301 (1935-11-01), Boswau
patent: 2177609 (1939-10-01), Boose
patent: 2185851 (1940-01-01), Kinkead
patent: 2238142 (1941-04-01), Weaver
patent: 2332645 (1943-10-01), Keithley et al.
patent: 2374908 (1945-05-01), Weaver
patent: 2502654 (1950-04-01), Keyes
patent: 2505728 (1950-04-01), Zenner
patent: 2694802 (1954-11-01), Terry et al.
patent: 2793357 (1957-05-01), Wynn
patent: 2840797 (1958-06-01), Derr
patent: 2954431 (1960-09-01), Royden
patent: 2974187 (1961-03-01), Barrett et al.
patent: 2982809 (1961-04-01), Light et al.
patent: 2986602 (1961-04-01), Tubinis
patent: 3016516 (1962-01-01), Doersam, Jr.
patent: 3043905 (1962-02-01), Semancik et al.
patent: 3078336 (1963-02-01), Cameron et al.
patent: 3120606 (1964-02-01), Eckert, Jr. et al.
patent: 3208049 (1965-09-01), Doty, Sr. et al.
patent: 3214733 (1965-10-01), Spencer et al.
patent: 3221307 (1965-11-01), Manning
patent: 3239819 (1966-03-01), Masters
patent: 3242467 (1966-03-01), Lamy
patent: 3244804 (1966-04-01), Wittenberg
patent: 3245043 (1966-04-01), Gaffney, Jr. et al.
patent: 3281797 (1966-10-01), Harris
patent: 3303470 (1967-02-01), Brixner et al.
patent: 3303476 (1967-02-01), Moyer et al.
patent: 3336577 (1967-08-01), Frielinghaus
patent: 3336582 (1967-08-01), Beausoleil et al.
patent: 3344404 (1967-09-01), Curewitz
patent: 3377619 (1968-04-01), Marsh et al.
patent: 3417130 (1968-12-01), Rynders
patent: 3445822 (1969-05-01), Driscoll
patent: 3456242 (1969-07-01), Lubkin et al.
patent: 3480914 (1969-11-01), Schlaeppi
patent: 3483329 (1969-12-01), Hunkins et al.
patent: 3519750 (1970-07-01), Beresin
"Data Transmission and Switching Equipment for the Seat Reservation System of United Airlines", Philips Telecommunications Review, vol. 24, No. 1, Feb. 1963, pp. 13-24.
IBM Technical Disclosure Bulletin 7 (1974/65) pp. 592-593.
Teknisk Tidskrift 1959 pp. 339-344 (Article by J. M. Unk in Swedish Magazine.
Elektroniskt Fjarrstyrningssystem JZA 41 SIB 486/1964 (Leaflet from Swedish Firm L. M. Ericsson AB).
Report of Study Made by the French Firm Le Materiel Telephonique in LMT 441.632-A, Issue 2 of Dec. 27, 1962.
"Design of Real-Time Computer Systems"; J. Martain; Prentice-Hall; published 9 Oct. 1967; pp. 291-294.

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