Code modulation system

Details Code modulation system Code modulation system

1985-01-30

1986-12-09

Miska, Vit W.

Communications: electrical

Audible indication

Percussion-type sound producer

360 40, H03K 1324, G11B 509

Patent

active

046282971

ABSTRACT:
In the code modulation system for converting input data levels into an output signal in the form of code words by providing M input levels among N input levels assigned to input data with stairlike code weights on the basis of the input levels, (N-M) input levels which are the difference between said N input levels and said M input levels are respectively disposed near transition points where said stairlike code weight is changed, and the code weights are provided with hysteresis in the ascent process and the descent process of the input data level.

REFERENCES:
patent: 3719934 (1973-03-01), Behr et al.
patent: 4520346 (1985-05-01), Shimada
patent: 4523181 (1985-06-01), Tazaki et al.
"Recent Developments for Digital VTR: Channel Coding and Error Protection"; International Broadcasting Convention, IEEE 220, pp. 221-225, 1982, J. Heitmann et al.

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