Frequency modulation coding methods with reduced transition inte

Details Frequency modulation coding methods with reduced transition inte Frequency modulation coding methods with reduced transition inte

1989-06-06

1990-09-25

Shoop, Jr., William M.

Coded data generation or conversion

Digital code to digital code converters

To or from nrz codes

341 69, 360 41, 360 42, H03M 738

Patent

active

RE0333565

ABSTRACT:
There is provided a method of modulating a data bit series consisting of a first value (e.g. 1) and a second value (e.g., 0) whereby a transition as a state transition is caused so as to satisfy the following conditions of (a) to (d).

REFERENCES:
patent: Re31311 (1983-07-01), Miller
patent: 4027335 (1977-05-01), Miller
patent: 4234897 (1980-11-01), Miller
patent: 4383281 (1983-05-01), Lesieur
patent: 4495528 (1985-01-01), Sasamura et al.
Taub, Elimination of DC Component in MFM-Type Codes,IBM Technical Disclosure Bulletin, vol. 21, No. 1, 6/1978, pp. 361 & 362.
Frazier, Improved Modified Frequency Modulation Code, IBM Technical Disclosure Bulletin, vol. 24, No. 4, 9/1981, pp. 2055 & 2056.

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