Code generator to produce permutations of code mates

Details Code generator to produce permutations of code mates Code generator to produce permutations of code mates

1967-09-28

1976-03-30

Gruber, Felix D.

Registers

Transfer mechanism

Traveling pawl

179 15BC, 340348, 343 171R, 343100CL, G06G 719, H03K 1302

Patent

active

039476740

ABSTRACT:
A class of pseudo-noise multiplexed codes including coding mates having cooperating autocorrelation function which upon detection provides an impulse autocorrelation function. The code mates include at least one blank digit slot in the repetitious period of at least one of the codes of the code mates. One form requires a digit of either binary condition in the first and last digit slot of the code structure with the blank slot being disposed therebetween. The number of code mates can be increased by repeatedly solving the equations of FIG. 5 for the original code mates and the resultant new code mates. The interleaving process required in the equations is achieved by logic circuitry controlled by a control signal having a period equal to the period of a digit slot of the input code mates.

REFERENCES:
patent: 3173139 (1965-03-01), Welti
patent: 3208065 (1965-09-01), Gutleber et al.
patent: 3249940 (1966-05-01), Erickson
patent: 3461451 (1969-08-01), Gutleber
patent: 3510595 (1970-05-01), Gutleber
patent: 3634765 (1972-01-01), Gutleber

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