Data recording apparatus

Details Data recording apparatus Data recording apparatus

1997-04-04

1998-04-14

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from run length limited codes

341 68, 360 46, H03M 500

Patent

active

057397830

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 for converting 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 for converting the digital signal output from the second output terminal to a signal which will be DC free, and an encoding means 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: 4567464 (1986-01-01), Siegel et al.
patent: 4609907 (1986-09-01), Adler et al.
patent: 5255128 (1993-10-01), Inoue et al.
patent: 5432651 (1995-07-01), Maeno et al.
patent: 5490181 (1996-02-01), Shimotashiro et al.

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