Registers – Transfer mechanism – Traveling pawl
Patent
1975-03-05
1977-04-05
Smith, Jerry
Registers
Transfer mechanism
Traveling pawl
310 81, 333 30R, G06G 719, H04R 1700
Patent
active
040164128
ABSTRACT:
A continuously programmable matched filter device using a piezoelectric substrate capable of propagating acoustic wave signals on a selected surface thereof and a semiconductor substrate mounted adjacent and spaced from such surface. Means are provided for altering the conductivity pattern in the semiconductor substrate in accordance with the wave form of a reference wave signal so that a representation of the reference wave is effectively stored therein. Storage of the reference is achieved with electrostatic charge by supplying a plurality of electrons in the spatial region between the substrates or by manipulating the carriers in the semiconductor material into trapping states in order to produce such altered conductivity pattern. A second signal can thereupon be propagated along the piezoelectric substrate to interact with the stored reference conductivity pattern to provide either correlation or convolution operation depending on the direction of propagation thereof along the piezoelectric surface.
REFERENCES:
patent: 3760172 (1973-09-01), Quate
patent: 3826932 (1974-07-01), Wang
patent: 3833867 (1974-09-01), Solie
patent: 3862431 (1975-01-01), Quate et al.
patent: 3886529 (1975-05-01), Bert et al.
Bers et al.: Surface State Memory in Surface Acousto-Electric Correlator. Applied Physics Letters, vol. 25, No. 3, Aug. 1974, pp. 133-135.
Schroder et al: Experimental Confirmation of the Fowler-Nordheim Law for Large Area Field Emitter Arrays. Applied Physics Letters, vol. 23, No. 1, July 1973, pp. 15/16.
Stern Ernest
Williamson Richard C.
Massachusetts Institute of Technology
O'Connell Robert F.
Santa Martin M.
Smith Jerry
Smith, Jr. Arthur A.
LandOfFree
Surface wave devices for processing signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface wave devices for processing signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface wave devices for processing signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2267688