DAVID FIORI
Vehicle Board in Yardley, PA

4658153, Apr 14, 1987

May 12, 1986

6/864737

Amnon Brosh - Montvale NJ
David Fiori - Yardley PA

H01H 3600

307106

The position sensor constitutes a fixed planar board having disposed on the surface serpentine coil structures of relatively low resistance and inductance. The coils are driven in a resonance mode which provides a frequency output according to the position of a moving planar member. The second movable planar board has disposed on the surface thereof planar loop coil structures. The second board is moved in proximity to the first board to vary the resonance characteristics of the first coil according to the position of the second board with respect to the fixed board. In this manner the frequency output of the system is a function of the position of the boards with respect to one another. Other embodiments depict means for compensating the thermal drifts of the frequency with respect to temperature.

4841245, Jun 20, 1989

Jan 29, 1987

7/008639

David Fiori - Yardley PA

Sensor Technologies, Inc. - Pennsauken NJ

G01B 714

324208

Non-contacting sensor apparatus having two tank circuits from which an indication of the position of the moving part of the sensor is developed by measuring the relative resonance frequencies of the two tank circuits. As the moving part of the sensor changes position, the relative resonance frequencies of the two tank circuits change. The outputs of the two tank circuits are multiplexed and drive a pulse generator which develops a first series of pulses having a repetition rate which corresponds to the resonance frequency of one of the tank circuits and a second series of pulses having a repetition rate which corresponds to the resonance frequency of the other tank circuit. The relative times required to count the same number of pulses of each series of pulses provides an indication of the position of the moving part of the sensor.

5386148, Jan 31, 1995

May 8, 1992

7/879941

David Fiori - Yardley PA

H04B 328

307 89

A signal conditioning circuit having an input stage that receives inputs from at least one pair of conductors and processes the input signal through an input filter and a buffer amplifier. Each input filter and buffer amplifier are powered by independent power sources whose power return reference potentials are independently determined by the potential of the corresponding input signal potential reference conductor. The outputs of the buffer amplifiers, the power return reference potentials, and the power return reference potential of the conditioning circuit output are all appropriately added or subtracted in an output stage. The output stage consists of an amplifier buffer having low output impedance which is powered by a separate independent power source whose power return reference potential is independently determined by the potential of the output signal reference conductor. The output of this circuit stage is connected to an output inductor circuit which in turn drives the output signal conductor. The output stage further includes a filter which is designed to maintain stability and reject external influences on the output of the output amplifier buffer.

4851770, Jul 25, 1989

May 4, 1987

7/046436

David Fiori - Yardley PA

Sensor Technologies, Inc. - Pennsauken NJ

G01B 714

324208

Non-contacting sensor apparatus having two tank circuits from which an indication of the position of the moving part of the sensor is developed by measuring the relative resonance frequencies of the two tank circuits. As the moving part of the sensor changes position and moves toward and away from the inductance coil of one of the tank circuits, the relative resonance frequencies of the two tank circuits change. The outputs of the two tank circuits are multiplexed and drive a pulse generator which develops a first series of pulses having a repetition rate which corresponds to the resonance fequency of one of the tank circuits and a second series of pulses having a repetition rate which corresponds to the resonance frequency of the other tank circuit. The relative times required to count the same number of pulses of each series of pulses provides an indication of the position of the moving part of the sensor.

5694081, Dec 2, 1997

Jun 7, 1995

8/448383

David Fiori - Yardley PA

H03F 345

330 69

A signal conditioning system that receives inputs from at least one pair of conductors connected to its input. Each such input is processed by an input filter and presented to a buffer amplifier. Each such input filter and buffer amplifier refers to and is powered by independent power sources whose power return reference potentials are independently determined by the potential of the corresponding input signal potential reference conductor for the signal frequencies of interest. The outputs of all such buffer amplifiers, the power return reference potentials, and the power return reference potential of the conditioning circuit output are all appropriately added or subtracted in the next circuit stage. This circuit stage consists of an amplifier buffer having low output impedance which is powered by another independent power source whose power return reference potential is independently determined by the potential of the output signal reference conductor. The output of this circuit stage is connected to an output inductor circuit which in turn drives the output signal conductor.

5664022, Sep 2, 1997

Jan 6, 1994

8/178099

David Fiori - Yardley PA

G01R 3102

381 941

Noise gate control circuitry eliminates in audio systems the effects of spurious signals on a transducer of a speaker. The noise gate control circuitry coordinates the electronic switching of the transducer to power sources in accordance with a remote turn on control signal, and coordinates this action with the application of power to power sources and signal processing circuitry via remote turn on provisions. The noise gate control circuitry senses and responds to the signals and rapidly connects and disconnects the transducer when the signal level drops to a level too low to be of any good effect. The effect of signal level on delays is removed to provide for suppressing undesirable changes in response.

6078215, Jun 20, 2000

Jul 20, 1998

9/119136

David Fiori - Yardley PA

H03F 345, H03F 114, H03H 1100

330 69

A circuit for modifying the impedance of a subject circuit includes a driving impedance element having an impedance characteristic which is substantially proportional to the impedance characteristics of the subject circuit. The circuit of the present circuit further includes a voltage controlled voltage source circuit which is coupled to the driving impedance element to proportionally add or subtract current from the applied subject circuit. The voltage controlled voltage source circuit provides a given voltage to the combined subject circuit and driver impedance element that is effectively proportional to the voltage potential difference across the subject circuit, thereby providing an enhanced effective impedance for the subject circuit.

6211731, Apr 3, 2001

Jun 14, 2000

9/593353

David Fiori - Yardley PA

H03F 345, H03F 114, H03H 1100

330 69

A circuit for modifying the impedance of a subject circuit includes a driving impedance element having an impedance characteristic which is substantially proportional to the impedance characteristics of the subject circuit. The circuit of the present circuit further includes a voltage controlled voltage source circuit which is coupled to the driving impedance element to proportionally add or subtract current from the applied subject circuit. The voltage controlled voltage source circuit provides a given voltage to the combined subject circuit and driver impedance element that is effectively proportional to the voltage potential difference across the subject circuit, thereby providing an enhanced effective impedance for the subject circuit.

2006009, May 4, 2006

Nov 3, 2004

10/980883

David Fiori - Yardley PA, US
Victor Chavez - North Hollywood CA, US

H04B 1/00

381086000

An interface enhancement apparatus that increases the utility of devices that translate digital commands intended for a device with certain limitations in terms of the user specification of at least one control parameter to expand the ability of a user to specify the control parameter from a larger range of values than the source digital commands are intrinsically capable of specifying.

4926174, May 15, 1990

Mar 4, 1988

7/164399

David Fiori - Yardley PA

H03M 100

341110

A digital voltmeter which converts an input signal having an amplitude to be measured into a digital signal from which a series of pulses is developed having a duty cycle which is proportional to the amplitude of the input signal. These pulses are supplied are supplied to a digital-to-analog converter which develops an analog signal having an amplitude proportional to the duty cycle of the pulses and is compared with the input signal to stabilize the digital signal at a value corresponding to the amplitude of the input signal.