Method of ultrasonic data communication and apparatus for carryi

Details Method of ultrasonic data communication and apparatus for carryi Method of ultrasonic data communication and apparatus for carryi

1973-09-18

1977-08-30

Wilbur, Maynard R.

Communications: electrical

Selective

Intelligence comparison for controlling

340171PF, 324 77E, G01V 100, H04B 1300, H04B 1500

Patent

active

040457672

ABSTRACT:
In an ultrasonic data communication system, each datum is represented by a specific ultrasonic wave signal composed of plural frequency components arranged according to a specific one of predetermined frequency permutations so that the data transmission time can be considerably reduced without the influence of reverberation.

REFERENCES:
patent: 2982852 (1961-05-01), Fano
patent: 3069657 (1962-12-01), Green, Jr. et al.
patent: 3075400 (1963-01-01), Carlson
patent: 3289152 (1966-11-01), McIlwraith et al.
patent: 3330909 (1967-07-01), Willson
patent: 3336571 (1967-08-01), Johnson et al.
patent: 3469189 (1969-09-01), Miller, Jr.
patent: 3742440 (1973-06-01), Ehrlich et al.

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