Static information storage and retrieval – Systems using particular element – Magnetostrictive or piezoelectric
Patent
1975-11-14
1978-01-24
Gruber, Felix D.
Static information storage and retrieval
Systems using particular element
Magnetostrictive or piezoelectric
333 30R, 333 72, 365149, 364821, 364862, H01L 4110, G06G 719
Patent
active
040706524
ABSTRACT:
An acousto-electric device provides a memory for a reference signal and provides for the convolution or correlation of input signals with the reference signal. The reference signal is transduced onto a piezoelectric surface to establish an electric field which determines the transfer and recombination of minority carriers across the p-n junction matrix of an adjacent semiconductor thereby creating a space-charge region in the semiconductor which is a spatial replication of the reference signal. The signal may be recovered in relation to the amplitude modulation of a carrier signal. For correlation or convolution of the reference signal with input signals, the input signals are provided to first or second terminals respectively and transduced onto the piezoelectric surface to produce electric fields which interact with the space-charge region of the stored reference signal to provide a product current whose integration comprises the correlation or convolution output.
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Heng Terrance M. S.
Malmberg Paul R.
Nathanson Harvey C.
Schroder Dieter K.
Gruber Felix D.
Patterson H. W.
Westinghouse Electric Corporation
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