Coded data generation or conversion – Digital code to digital code converters – To or from minimum d.c. level codes
Patent
1995-05-24
1997-08-12
Gaffin, Jeffrey A.
Coded data generation or conversion
Digital code to digital code converters
To or from minimum d.c. level codes
341 68, 360 46, H03M 500
Patent
active
056570139
ABSTRACT:
An apparatus for encoding a digital signal includes switching means for alternately outputting the digital signal from first and second output terminals at every bit. A first converting means converts the digital signal output from the first output terminal to a signal which will be DC free after NRZI conversion is carried out. A second converting means converts the digital signal output from the second output terminal to a signal which will be DC free. An encoding means is supplied with outputs from the first and second converting means, alternately combining outputs of the first and second converting means at every bit and obtaining a substantially I-NRZI converted digital signal.
REFERENCES:
patent: 4520346 (1985-05-01), Shimada
patent: 4609907 (1986-09-01), Adler et al.
patent: 4885646 (1989-12-01), Kanota et al.
patent: 5122912 (1992-06-01), Kanota et al.
patent: 5255128 (1993-10-01), Inoue et al.
patent: 5432651 (1995-07-01), Maeno et al.
Frommer William S.
Gaffin Jeffrey A.
Huynh Thuy-Trang N.
Sinderbrand Alvin
Sony Corporation
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