Data transmission cable

Details Data transmission cable Data transmission cable

1984-10-26

1988-07-26

Caldwell, Sr., John W.

Communications: electrical

Systems

Selsyn type

340310CP, 174 52PE, 361395, 363 73, 363146, 363147, 439 59, 439 76, 439461, H04M 1104

Patent

active

047603755

ABSTRACT:
A multi-wire data transmission cable for transmitting data signals over long distances between data devices. Presently, data devices are usually equipped with voltage interfaces for the connection of peripheral instruments. The length of data transmission lines connecting such devices is limited, due to line resistences. For transmission over long distances, signals must be converted prior to transmission and then must be reconverted after receipt of transmission. The present invention allows the connection of long transmission lines to data devices without the need of external signal converters or additional units normally required. The handle portion of the plug connection at either or both ends of the cable houses a circuit that incorporates a signal converter. No additional external units are required to connect data devices over long distances, since the converter is integrated into the cable.

REFERENCES:
patent: 3170749 (1965-02-01), Johanson et al.
patent: 3678366 (1972-07-01), Tharman
patent: 3900769 (1975-08-01), Russo
patent: 4153873 (1979-05-01), Grindheim
patent: 4305633 (1981-12-01), Engberg et al.
patent: 4306760 (1981-12-01), Testa
patent: 4403111 (1983-09-01), Kelly
patent: 4409641 (1983-10-01), Jakob et al.
patent: 4543624 (1985-09-01), Rumble
AMF Incorporated, Electronic Products Magazine, Mar. 18, 1974, p. 36.

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