Larry D Carter

US Patent:

7098669, Aug 29, 2006

Filed:

Sep 20, 2004

Appl. No.:

10/945419

Inventors:

Larry Carter - Fountain Valley CA, US

Assignee:

Flowline, Inc. - Los Alamitos CA

International Classification:

G01R 27/02

US Classification:

324605, 324607, 324644

Abstract:

A system for determining the depth of a fluid in a storage tank. The depth of the fluid is determined after the detection of a pulsed wave that is reflected from the top surface of the fluid. The system includes a transducer, an analog-to-digital converter, and a filter. The transducer is configured to sense the reflected pulsed wave and to generate an analog input signal that corresponds to the reflected pulsed wave. The analog-to-digital converter is coupled to the transducer, and configured to convert the analog input signal into a digital input signal. The filter is coupled to the analog-to-digital converter. The filter includes a finite impulse response filter that is configured to receive the digital input signal and to generate a digital output signal.

US Patent:

20060192567, Aug 31, 2006

Filed:

Apr 25, 2006

Appl. No.:

11/411669

Inventors:

Larry Carter - Fountain Valley CA, US

International Classification:

G01R 27/02

US Classification:

324605000

Abstract:

A system for determining the depth of a fluid in a storage tank. The depth of the fluid is determined after the detection of a pulsed wave that is reflected from the top surface of the fluid. The system includes a transducer, an analog-to-digital converter, and a filter. The transducer is configured to sense the reflected pulsed wave and to generate an analog input signal that corresponds to the reflected pulsed wave. The analog-to-digital converter is coupled to the transducer, and configured to convert the analog input signal into a digital input signal. The filter is coupled to the analog-to-digital converter. The filter includes a finite impulse response filter that is configured to receive the digital input signal and to generate a digital output signal.

US Patent:

43015018, Nov 17, 1981

Filed:

May 2, 1980

Appl. No.:

6/146058

Inventors:

Larry E. Carter - Westminster CA
Robert M. Ashby - Pasadena CA

Assignee:

American Telecommunications Corporation - El Monte CA

International Classification:

H02M 306

US Classification:

363 62

Abstract:

A capacitor ratio multiplier has a switched capacitor for switching between sampling, sharing and delivering charge modes. During the sampling mode, the switched capacitor receives charge from a port in a circuit. During th sharing mode, the switched capacitor is paralleled by a sharing capacitor and is partially discharged thereby. The switched capacitor is connected to a port in the circuit for delivering charge. The sharing capacitor is discharged prior to sharing charge with the switched capacitor.