Pulse or digital communications – Repeaters – Testing
Patent
1989-08-24
1991-02-19
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
328116, 375 94, H04L 2506
Patent
active
049951068
ABSTRACT:
The decision feedback decoder of the invention receives sequentially digital values corresponding to a data stream transmitted by a signal transmission channel. The decoder has two parallel signal paths. The first path has a first logic circuit which receives every other digital value corresponding to every other data bit of the transmitted data stream, and it provides and outputs subsequent decisions determining the values of these corresponding bits. The second path has a second logic circuit which receives sequentially all the digital values corresponding to all the data bits of the stream. During the time of providing each decision by the first logic circuit, the second logic circuit provides two subsequent decisions determining the respective values of two subsequent bits, but it outputs only every other decision, which alternates with the decisions provided by the first logic circuit. A predetermined number of previous decisions is stored and fed back to both logic circuits for use in the decision making process. The resulting rate the decisions output by the decoder of the invention is approximately doubled over the rate of known decision feedback decoders.
REFERENCES:
patent: 3125727 (1964-03-01), Sharp
patent: 3456201 (1969-07-01), Zrubek
patent: 3634769 (1972-01-01), Sleater et al.
patent: 3898572 (1975-08-01), Kato
patent: 4012697 (1977-03-01), Ballinger
patent: 4344039 (1982-08-01), Sugiura et al.
patent: 4371975 (1983-02-01), Dugan
patent: 4543531 (1985-09-01), Sugita et al.
patent: 4546394 (1985-10-01), Yamamoto
patent: 4636859 (1987-01-01), Vernhet
patent: 4639792 (1987-01-01), Moxon
patent: 4697098 (1987-09-01), Cloke
patent: 4703282 (1987-10-01), Yoshida
patent: 4707666 (1987-11-01), Pfeifer et al.
patent: 4767997 (1988-08-01), Nielsen
patent: 4779054 (1988-10-01), Monteleone et al.
Ampex Corporation
Safourek Benedict V.
Strnad Elizabeth E.
LandOfFree
Fast decision feedback decoder for digital data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fast decision feedback decoder for digital data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast decision feedback decoder for digital data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1150768