Process for the base band modulation of a data signal, as well a

Details Process for the base band modulation of a data signal, as well a Process for the base band modulation of a data signal, as well a

1986-08-01

1988-05-24

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

360 44, 340347DD, H03M 700

Patent

active

047471131

ABSTRACT:
A process for the base band modulation of a data signal on a magnetic support is characterized in that: (a) a bit value of 0 is marked if it follows an unmarked bit of value of 0 or a sequence of three consecutive unmarked bits of value 1; (b) a bit value 1 as marked if it follows a bit value 0 or a sequence of three consecutive unmarked bits of value 1, except if these rules (a) and (b) lead to marking the first bit of a sequence formed from three bits of value 1 followed by a bit of value 0. The minimum interfront in the modulated signal is equal to 1.5 T and the maximum interfront is equal to 4 T.

REFERENCES:
patent: Re27812 (1973-11-01), Lipp
patent: 3377583 (1968-04-01), Sims, Jr.
patent: 4410877 (1983-10-01), Carasso et al.
patent: 4428007 (1984-01-01), Tanaka et al.
patent: 4672363 (1987-06-01), Tanaka et al.
Journal of The Audio Engineering Society, vol. 31, No. 4, Apr. 1983.
IBM Journal of Research and Development, vol. 19, No. 4, Jul. 1975.
IEEE Transitions on Communications, vol. Com-31, No. 1, Jan. 1983.

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