Digital signal transmitting and receiving system for serial data

Details Digital signal transmitting and receiving system for serial data Digital signal transmitting and receiving system for serial data

1984-05-17

1985-12-31

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375113, H04L 704

Patent

active

045625816

ABSTRACT:
A digital signal transmission system whereby the plural-bits-in-one-word digital signals are transmitted serially. According to this system, when the amount of data per unit time increases and the clock frequency of data is extremely high, a word synchronizing signal is input for each word so as to effect clock synchronization of data based on the word synchronizing signal, thereby allowing easy reading of each data bit. Detection can be facilitated by differentiating the format of the word synchronizing signal from that of the data clock signal, for example by varying the pulse period or pulse width. Further, by assembling a plural number of words into a block so that the block units are indicated with at least one bit in the words being signalled as a block flag bit, it becomes possible to treat the data in excess of the word units, allowing increase of the substantial bit number without increasing the bit number in one word.

REFERENCES:
patent: 3309463 (1963-04-01), Roedl
patent: 3398400 (1968-08-01), Rupp
patent: 3546592 (1970-12-01), Mayo
patent: 3601537 (1971-08-01), Gueldenpfenning
patent: 3651263 (1972-03-01), Lindback
patent: 4017684 (1977-04-01), Kurihara
patent: 4022973 (1977-05-01), Stackhouse
patent: 4168469 (1979-09-01), Parikh et al.
Newnes-Butterworths, "Electronics Engineer Reference Book", 4th Edition, London, 1978, pp. 15.144-15.145.

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