Asynchronous multiplexer-demultiplexer

Details Asynchronous multiplexer-demultiplexer Asynchronous multiplexer-demultiplexer

1977-04-21

1978-07-04

Olms, Douglas W.

H04J 600

Patent

active

040990281

ABSTRACT:
An asynchronous multiplexer-demultiplexer for pulse-coded data transmission over a single communication link, such as a laser beam link, at a predetermined transmitter pulse clock rate sufficiently high to accommodate a plurality of source ports and corresponding destination ports wherein each source port includes a plurality of buffer memories for accumulation of data blocks to be transmitted, means for encoding the data source clock rate into a 20-bit word, and means for generating an interrupt signal to the transmitter. A priority interrupt system controls the transmitter to transmit blocks of data from the source ports on a predetermined order of priority giving sources of higher data rate higher priority. Each block of data transmitted is preceded by a header which includes a preamble and block sync codes, a source clock code, a source port identification (ID) code, and a source word length code. The receiver decodes the ID code from the header to enable the source clock code and the word length code for a block of data to be routed to a destination port where that block of data, itself, is stored in the next one of a plurality of buffer memories, and the source clock code is decoded to produce an output clock rate for reading out data from the buffer memories of the destination port on a first in, first out basis. The word length code is employed by the destination port if necessary, for converting data from serial to parallel form.

REFERENCES:
patent: 3466397 (1969-09-01), Benowitz et al.
"A Time-Division Multiplexing System for Asynchronous High-Rate Telemetry" by Appel et al., in APL Technical Digest, Sep.-Oct. 1971, pp. 2-12.
IBM Technical Disclosure Bulletin, "Asynchronous Multiplex System" by Clark et al., vol. 11, No. 8, Jan. 1968, pp. 910-911.

Affiliated with

Also associated with

Rating

Asynchronous multiplexer-demultiplexer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Asynchronous multiplexer-demultiplexer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Asynchronous multiplexer-demultiplexer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-279088