Jerry W Norris

US Patent:

43853773, May 24, 1983

Filed:

Jan 16, 1978

Appl. No.:

5/869410

Inventors:

Jerry L. Norris - Dallas TX
Clinton S. Hartmann - Richardson TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04J 600
H04J 1300

US Classification:

370 10

Abstract:

A device for sample modulating electronic information signals, which includes a pulse position modulating circuit having a first input coupled to receive information signals, a second input coupled to simultaneously receive uniformly spaced sampling signals, and an output for generating thereon in response to each sampling signal an electronic output impulse at a time instant indicating the amplitude of the simultaneously received information signals. Also included is an acoustic surface wave device having an impulse response of predetermined shape and finite length. The surface wave device has an input coupled to receive the impulses from the pulse position modulating circuit for generating in response thereto output signals proportional to the convolution of the impulses with the impulse response. Accordingly, these output signals also are of predetermined shape and finite length, and thus have a highly controllable frequency spectrum.

US Patent:

43607918, Nov 23, 1982

Filed:

Jan 10, 1977

Appl. No.:

5/758366

Inventors:

Jerry L. Norris - Dallas TX
Clinton S. Hartman - Richardson TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03H 1502
H03H 1702
G11C 1928

US Classification:

333165

Abstract:

Disclosed is a frequency converting filter comprised of a charge transfer device transversal filter and a non-sampling filter. The transversal filter has an output lead coupled to an input of the non-sampling filter, and has frequency passbands of width. DELTA. f centered at the fixed frequencies nf. sub. s. +-. f. sub. o. The non-sampling filter has a single passband. The single passband has a width of less than f. sub. s -f. sub. o -. DELTA. f/2 and it is centered to include only a selected one of the passbands of the transversal filter.

US Patent:

42951020, Oct 13, 1981

Filed:

Sep 28, 1979

Appl. No.:

6/080366

Inventors:

Gary D. Schmidt - Dallas TX
Jerry L. Norris - Dallas TX
Donald F. Weirauch - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G01B 716
H03B 518
H03H 925

US Classification:

331 65

Abstract:

A surface acoustic wave sensor system in which a predetermined level of coupling between two surface acoustic wave arrays is intentionally provided in order to couple radio frequency energy from one into the other and thereby, in cooperative effect with attendant oscillator circuits and a filter, results in the development of a difference frequency which is a function of the sensed condition.

US Patent:

41840526, Jan 15, 1980

Filed:

Jan 16, 1978

Appl. No.:

5/869412

Inventors:

Jerry L. Norris - Dallas TX
Clinton S. Hartmann - Richardson TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04J 312
H03H 730

US Classification:

179 15A

Abstract:

A device for sample modulating electronic information signals which includes mixing circuitry having a first input coupled to receive information signals, a second input for receiving electrical sampling signals, and an output for generating thereon electrical output signals proportional to the product of the information signals and the sampling signals. Also included is an acoustic surface wave device having an impulse response of predetermined shape and finite length. The surface wave device has an output coupled to the second input of the mixing circuit for generating thereon the sampling signals. These signals are proportional to the finite impulse response of predetermined shape, and accordingly have a highly controllable frequency spectrum.