Boots – shoes – and leggings
Patent
1978-10-23
1981-01-13
Gruber, Felix D.
Boots, shoes, and leggings
358133, 358138, 364821, 364861, G06G 712, H04N 314
Patent
active
042453305
ABSTRACT:
An elastic surface wave transformer comprises a receiver transducer and an emitter transducers on a substrate capable of transmitting elastic surface waves. The transformer comprises a single track and the emitter transducers are arranged behind one another at a distance equal to the path traversed by a sample during a sampling period. The electrodes of the transducers are designed to transmit in phase or in phase opposition the samples that are applied externally thereto, so as to obtain the coefficients of the Hadamard transform.
The transformer can be used in particular for transmitting images.
REFERENCES:
patent: 3818348 (1974-06-01), Puente
patent: 3859515 (1975-01-01), Radcliffe, Jr.
patent: 3899666 (1975-08-01), Bolger
patent: 4054909 (1977-10-01), Kojima et al.
patent: 4099250 (1978-07-01), Finnila et al.
patent: 4134134 (1979-01-01), Lux
Maines et al.: Surface-Acoustic-Wave Devices for Signal Processing Application; Proceedings of the IEEE, May 1976, pp. 639-652.
Henaff: Image Processing Using Acoustic Surface Waves; Electronics Letters, 8 Mar. 1973, vol. 9, No. 5, pp. 102-104.
Grant et al.: Programmable Transversal Filtering Using the Surface-Acoustic-Wave Diode Convolver; Wave Electronics 1974/76, pp. 381-386.
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