Coded data generation or conversion – Digital code to digital code converters – To or from minimum d.c. level codes
Patent
1998-02-17
2000-02-29
Young, Brian
Coded data generation or conversion
Digital code to digital code converters
To or from minimum d.c. level codes
H03M 514
Patent
active
060314729
ABSTRACT:
An encoding/decoding method for a signal having at least two different positive and negative levels. Each symbol representing, for instance, two binary bits is encoded in each symbol period. During each symbol period, the encoded signal transitions between a level of one polarity to a level in the opposite polarity. The levels and transitions are selected so that there is no DC component. The frequency spectrum is shifted away from the lower frequencies with this encoding.
REFERENCES:
patent: 5870040 (1999-02-01), Ando
patent: 5892467 (1999-04-01), Kim
Graham Martin H.
Johnson Howard W.
And Yet, Inc.
Young Brian
LandOfFree
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