High density data processing system

Details High density data processing system High density data processing system

1975-05-07

1977-04-26

Griffin, Robert L.

Telegraphy

Systems

Chemical

325 38A, 360 40, 340347DD, H04L 1500

Patent

active

040202828

ABSTRACT:
A data processing system applicable for high density magnetic recording and data transmission wherein digital data is translated into multi-level zero average words which occupy a greater number of time slots than the bits of the digital data which they represent, the words having increased power density in the signal spectra thereof which represent the difference between different words. After recording or transmission the signals are detected and decoded in accordance with the amplitude characteristics of samples of the detected signals occurring during time slots which are occupied by samples, the sum of which is equal to zero.

REFERENCES:
patent: 2700696 (1955-01-01), Barker
patent: 3226685 (1965-12-01), Potter
patent: 3518662 (1970-06-01), Nakagome
patent: 3588836 (1971-06-01), Frazier
patent: 3685033 (1972-08-01), Srivastava
patent: 3828346 (1974-07-01), Forster
patent: 3863025 (1975-01-01), Gonsewski

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