Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1977-05-27
1978-12-05
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
333 30R, 357 26, 324 77G, H01L 4110
Patent
active
041286154
ABSTRACT:
A system realizing various processings of signals, depending on the nature, duration and form of these signals, by means of non-linear interactions between elastic surface waves or between elastic and electromagnetic waves. The system realizes the memorization of the correlation function between a first signal, which is an elastic surface wave, and a second signal which is either an electromagnetic or an elastic surface wave; the reading may be realized with an electromagnetic wave or an elastic surface wave whose angular frequency equals or not that which corresponds to the spatial period of the memorized signal, thus generating correlation or convolution functions.
REFERENCES:
patent: 3886529 (1975-05-01), Bert et al.
patent: 3935564 (1976-01-01), Quate et al.
patent: 3944732 (1976-03-01), Kino
patent: 3982113 (1976-09-01), Coldren
Storage of Acoustic Signals in Surface States in Silicon; by H. Hayakawa & G. S. Kino; Applied Physics Letters, vol. 25, No. 4, Aug. 15, 1974.
Surface State Memory in Surface Acoustoelectric Correlator; by A. Bers & J. H. Cafarella, Applied Physics Letters, vol. 25, No. 3, Aug. 1, 1974.
Maerfeld Charles
Tournois Pierre
"Thomson-CSF"
Budd Mark O.
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