Coded data generation or conversion – Digital code to digital code converters – To or from nrz codes
Patent
1997-07-23
2000-02-22
Hoff, Marc S.
Coded data generation or conversion
Digital code to digital code converters
To or from nrz codes
341 73, H03M 514
Patent
active
060285400
ABSTRACT:
A binary data encoding and decoding technique that alternates between starting polarities of a signal for both each occurrence of a binary 1 and each occurrence of two or more consecutive binary 0's. To encode a binary 1, the signal is one polarity for one-half of a bit interval and then the other polarity for the other half of the bit interval. To encode a binary 0, the signal remains at a zero level, unless there are two or more consecutive binary 0's, in which case the signal will be one polarity for the second half of the first binary 0 bit interval, the other polarity for the first half of the second binary 0 bit interval, and repeat this waveform for every for every two adjacent binary 0's. Decoding occurs by examination of either the signal level as compared to predetermined cut-levels, or the time equivalent distance between the peaks. In the first case, if the signal is above the upper cut-level or below the lower cut-level, a binary 1 is decoded; if it is between the upper cut-level and the lower cut-level a binary 0 is decoded. Alternatively, every occurrence of a peak is decoded as a binary 1 and the number of binary 0's between these binary 1's is determined by the time equivalent distance between peaks.
REFERENCES:
patent: 3968328 (1976-07-01), Tsuchiya et al.
patent: 4337457 (1982-06-01), Tache
patent: 4410877 (1983-10-01), Carasso et al.
patent: 4556868 (1985-12-01), Harle
patent: 4617553 (1986-10-01), Webster et al.
patent: 5144469 (1992-09-01), Brahms et al.
Digital Communication-2nd Ed., Lee & Messerschmitt, 1994, Chapter 12, Spectrum Control, pp. 558-568.
The Bell System Technical Journal, vol. XLI, Jan., 1962, PCM Transmission in the Exchange Plant, Aaron, pp. 99-141.
The Bell System Technical Journal, vol. XLI, Jan., 1962, A Bipolar Repeater for Pulse Code Modulation Signals, Mayo, pp. 25-97.
The Bell System Technical Journal, vol. XLIV, Oct., 1995, "Digital Transmission in the Pressure of Impulsive Noise," Engel, pp. 1699-1743.
"Certain Topics in Telegraph Transmission Theory," Nyquist, Transactions of the American Institute of Electrial Engineers, vol. 47, Apr. 1928, pp. 617-644.
"Bits and Pots Together," Graham, Memorandum No. UCS/ERL M97/45, Jul. 28, 1997, Electronics Research Laboratory, College of Engineering, University of California, Berkeley.
Hoff Marc S.
Tut Systems, Inc.
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