Pulse or digital communications – Repeaters – Testing
Patent
1981-11-09
1984-08-28
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
340347DD, 375 96, H04L 2549
Patent
active
044687877
ABSTRACT:
A source of a duobinary data signal is connected to a remote point by a coupling network having a high pass characteristic and transmission line. The data signal received at the remote point is subtracted from a delayed version thereof to derive the change representative signal, which is utilized at the remote point to regenerate and/or detect code violations of the data signal. Preferably, the received data signal is subtracted from a version thereof delayed by one bit time period. Circuitry generates an indication of a violation when, after assuming one extreme level in a given bit time period, the change representative signal again assumes the same level before assuming the other extreme level during a bit time period separated by an odd number of bit time periods from the given bit time period. Circuitry may also convert the change representative signal back to the duobinary data signal. Specifically, a three-state reversible binary counter is stepped up one state each time the change representative signal assumes its high level, is stepped down one state each time the change representative signal assumes its low level, and remains unchanged in state each time the change representative signal assumes its intermediate level.
REFERENCES:
patent: 3609755 (1971-09-01), Fenyves
patent: 4081756 (1978-03-01), Price et al.
patent: 4086566 (1978-04-01), Lender
patent: 4097687 (1978-06-01), Yamaguchi
patent: 4123625 (1978-10-01), Chow
patent: 4271526 (1981-06-01), Flora
Quantized Feedback in an Experimental 280-Mb/s Digital Repeater for Coaxial Transmission by F. D. Waldhauer, IEE Transactions on Communications, Jan. 1974, pp. 1-5.
T1D System Overview by J. B. Singleton and J. A. Lombardi, 1980.
Lear Siegler, Inc.
Safourek Benedict V.
LandOfFree
Ternary data transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ternary data transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ternary data transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-881501