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Data Transmission System Disclosure Number: IPCOM000096743D
Original Publication Date: 1963-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 3 page(s) / 83K

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Related People

Saghafi, H: AUTHOR [+1]


This system has input unit A and receiving unit B at opposite ends of an electrical, e.g., telephone, transmission line.

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Data Transmission System

This system has input unit A and receiving unit B at opposite ends of an electrical, e.g., telephone, transmission line.

Unit A has a telephone dial 11 associated with an inhibit disk 12 and encoder disk 13. The latter has notches spaced according to the BCD code. As with a telephone dial, no signals are generated until the operator's finger is removed from the dial and the dial starts back toward normal position. At this time, a series of BCD pulses are supplied to sense tube 14 through the notches in the rotating encoder disc. After amplification by a fluid amplifier 15, these pulses are supplied via a pneumatic-to-electrical transducer 16 to electronic modulator 17 for supply over the transmission line.

The sequential pulses are delivered by the transmission line to electrical-to- pneumatic transducer 18 in unit B. In 18, a fluid power stream normally discharges in a laminar state through an aligned outlet x. However, the electrical pulses from the transmission line temporarily render the stream turbulent and cause turbulent attachment of it to an outlet y for only as long as the signal lasts.

Meanwhile, reset button 19 will have been depressed in unit A to transmit an electrical signal to an electrical-to-pneumatic transducer 20 in unit B. Such diverts its power stream from x to y and applies a pneumatic reset signal to a control port of fluid amplifier latch 21. This reset signal sets latch 21 to discharge its power stream into outlet R. The pneumatic outputs from R of 21 and y of 18 are Anded at 22 to provide an output in 23 only when both inputs are pneumatically pulsed. Line 23 supplies inputs to respective one legs of four And's 24 of deserializer 25.

Meanwhile, when the operator's finger is removed from telephone dial 11 in A, the conventional telephone switch energizes a readinitiate line which, in the present system, is used to energize a single cycle clutch 26 in B. As clutch 26 rotates, successive short...