Title:
TWOODIMENSIONAL ELECTROACOUSTIC DEVICE FOR PROCESSING STORAGE AND INFORMATION
Document Type and Number:
Japanese Patent JPS55103770
Kind Code:
A
Abstract:
An acousto-electrical device for storing and processing information, in analog form, at any point of a two dimensional surface. It comprises: a piezoelectric substrate carrying four electro-mechanical transducers emitting elastic surface waves in two normal directions; a semi-conductor substrate carrying a diode network placed facing the piezoelectric substrate, and two electrodes placed respectively on the end faces of the two substrates. In one embodiment, the storing of a signal applied between the electrodes is achieved by means of two elastic auxiliary addressing waves, the non linear interaction of these three signals supplying a spatially periodic signal independent of time which is stored by the diodes. The stored signal is subsequently processed by means of elastic reading waves which interact non linearly therewith to provide simple reading of the initial signal or processing thereof, in particular its Fourier transform.
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Inventors:
SHIYARURU MAERUFUERUDO
ERUBE GOOCHIE
ERUBE GOOCHIE
Application Number:
JP1140680A
Publication Date:
August 08, 1980
Filing Date:
February 01, 1980
Export Citation:
Assignee:
THOMSON CSF
International Classes:
H04R17/00; G06G7/195; G11C27/00; H01L21/8247; H01L29/788; H01L29/792; H01L41/08; (IPC1-7): H01L29/78; H01L41/08; H04R17/00