Title: Acoustic storage device for the correlation in particular of two high frequency signals

Abstract: Solid-state diodes constituted by a semiconductor 3 and an insulated electrode 1 are aligned upon a piezoelectric substrate 4 at the surface of which there propagate the acoustic waves induced by the signals applied to transducers 7 and 8. With each diode there is associated a capacitor whose dielectric is constituted by a portion of the substrate 4; 9 designates the terminals of the electrodes 2 and 5 between which a voltage pulse is applied, in order to charge up the capacitors, after a first high frequency signal has been applied to the transducer 7. Thus, there is stored the high frequency signal at the terminals of the capacitor. During discharge of the capacitor, a second signal is applied to one of the transducers 7 or 8. At 9, there is picked off either the correlation or the convolution of the stored signal and the second signal.

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Inventors: Kantorowicz, Gerard (Paris, FR)

Application Number: 581749
Filing Date: 1975-05-29
Publication_date: 1976-08-17
Assignee: Thomson-CSF (Paris, FR)
Primary Class(es): 333/150 310/313B, 310/313R, 708/815
Other Classes:
US Patent Ref:

3675140	Jul, 1972	Fang et al.	330/5.
3691406	Sep, 1972	Mize	333/72.
3792321	Feb, 1974	Seifert	317/235.
3826932	Jul, 1974	Wang	310/8.
3833867	Sep, 1974	Solie	333/30.
3851280	Nov, 1974	Staples	333/30.

Other Refs:
Primary Examiner: Smith, Alfred E.
Assistant Examiner: Nussbaum, Marvin
Attorney: Plottel; Roland