Registers – Transfer mechanism – Traveling pawl
Patent
1975-03-03
1977-09-20
Smith, Jerry
Registers
Transfer mechanism
Traveling pawl
235156, 235181, G06G 719, G06F 1534
Patent
active
040499588
ABSTRACT:
A transform structure employing surface wave devices performs Fourier transform operations on a time-limited substantially band limited signal. The output signal of the transform structure is related to the Fourier transform of the input signal in a manner which permits forming the product of this output with a similar output of a second transform structure. This product is inverted by a third transform structure so as to provide the convolution of the two original input functions. The overall structure comprises a filter apparatus readily programable in either the time or frequency domain.
REFERENCES:
patent: 3586843 (1971-06-01), Sloane
patent: 3629509 (1971-12-01), Glaser
patent: 3803395 (1974-04-01), Quate
patent: 3900721 (1975-08-01), Speiser et al.
patent: 3920974 (1975-11-01), Means
patent: 3925646 (1975-12-01), Richardson et al.
patent: 3925653 (1975-12-01), Otto
Whitehouse et al.; High Speed Serial Accen Linear Transform Implementations, Digital Computer Symposium, Orlando, Florida, Jan. 1973.
Means et al., Image Transmission via Spread Spectrum Techniques, ARPA Quarterly report June-Oct. 1973, Appendix D, pp. 93-107.
Cooper & McGillem, Methods of Signal and System Analysis, 1967 Holt, Rinehart & Winston, Inc., pp. 105-106.
Comfort James T.
Elacqua James J.
Levine Harold
Smith Jerry
Texas Instruments Incorporated
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