Reversible code compander

Details Reversible code compander Reversible code compander

1974-05-09

1977-06-14

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1300

Patent

active

040300935

ABSTRACT:
A system for the condensation of a binary signal sequence and for the reproduction of the condensed signal sequence, in which the same encoding means is used both for the condensation and for the reproduction. In the reproduction mode of operation inverters are connected in series with the input and the output of the encoding means. The two inverters together with the encoding means act as a decoder because such a transformation function is selected for the encoding means at which the inverse transformation function is just the complementary function thereof.

REFERENCES:
patent: 2997705 (1961-08-01), Freedman
patent: 3172097 (1965-03-01), Imlay
patent: 3229275 (1966-01-01), Warman et al.
patent: 3274378 (1966-09-01), Crawford et al.
patent: 3292086 (1966-12-01), Magnoski
patent: 3394350 (1968-07-01), Packard
patent: 3562742 (1971-02-01), Abe
patent: 3680081 (1972-07-01), Richards
"Bit Rate Compression for Modulation" by S. M. Head et al. IBM Tech. Disclosure Bull. vol. 17, No. 3 Aug. 1974, p. 955.

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