Measuring the relative phases of sequential signal bursts

Claim 2

A phase detecting system for detecting the relative phases of received AC signal bursts comprising an input for receiving signal bursts, an oscillator producing an output signal at the frequency of said signal bursts, multiplying means for multiplying the output signal of said oscillator times the signal bursts received on said input to produce an impulse for each signal burst having a DC component proportional to the phase angle between such signal burst and said oscillator signal, integrating means for integrating the output of said multiplying means for the interval of each of said signal bursts to produce a signal representing the integral of each impulse produced by said multiplying means, said integrating means commencing integration at the start of each of said signal bursts and ending at the end of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 3

A phase measuring system as recited in claim 1 wherein said multiplying means comprises an electronic switch closing during one half of each cycle of said output signal of said oscillator and opening during the other half of each cycle of said output signal of said oscillator.

Claim 4

A phase measuring system comprising a source of sequential AC signal bursts of varying phases, an oscillator producing an output signal at the frequency of said signal bursts, and phase detecting means connected to receive said output signal from said oscillator and to receive said signal bursts to produce an output signal representation for each signal burst representing the phase of such burst relative to the phase of said oscillator signal, said phase detecting means comprising multiplying means multiplying said oscillator signal times each of said signal bursts to produce an output impulse for each burst having a DC component proportional to the cosine of the phase difference between said oscillator signal and such burst and integrating means for integrating the output of said multiplying means for the interval of each of said AC signal bursts to provide a signal representing the integral of each impulse produced by said multiplying means, said integrating means commencing integration at the start of each of said signal bursts and ending at the end of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 5

A phase measuring system comprising a source of sequential AC signal bursts of varying phases, an oscillator producing an output signal at the frequency of said signal bursts, and phase detecting means connected to receive said output signal from said oscillator and to receive said signal bursts to produce an output signal representation for each signal burst representing the phase of such burst relative to the phase of said oscillator signal, said phase detecting means comprising multiplying means multiplying said oscillator signal times each of said signal bursts to produce an output impulse for each burst having a DC component proportional to the cosine of the phase difference between said oscillator signal and such burst and integrating means for integrating the output of said multiplying means for the interval of each of said AC signal bursts to provide a signal representing the integral of each impulse produced by said multiplying means, said integrating means commencing integration at the start of each of said signal bursts and ending at the end of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 6

A phase measuring system as recited in claim 3 wherein said signal representation produced by said phase detecting means comprises a digital representation of the phase of each burst relative to said oscillator signal.

Claim 7

A phase measuring system comprising a source of sequential AC signal bursts of varying phases, an oscillator producing a first output signal at the frequency of said signal bursts and a second output signal at the frequency of said signal burst displaced from said first oscillator signal by 90*, phase detecting means connected to receive said signal bursts to produce output signal representations for each signal burst representing the phase of such burst relative to the phase of said oscillator signal, said phase detecting means comprising first multiplying means connected to multiply said first oscillator signal times each of said signal bursts to produce an impulse for each burst having a DC component proportional to the cosine of the phase angle between such signal burst and said oscillator signal, second multiplying means connected to multiply said second oscillator signal times each signal burst to produce an impulse for each signal burst having a DC component proportional to the sine of the phase angle between such signal burst and said first oscillator signal, first integrating means for integrating the output of said first multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said first multiplying means, and second integrating means for integrating the output of said second multiplying means for the interval of each of said signal bursts to produce an output signal proportional to the integral of each impulse produced by said second multiplying means, said first and second integrating means commencing integration at the start of each of said signal bursts and ending integration at the end of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 8

A phase measuring system comprising a source of sequential AC signal bursts of varying phases, an oscillator producing a first output signal at the frequency of said signal bursts and a second output signal at the frequency of said signal burst displaced from said first oscillator signal by 90*, phase detecting means connected to receive said signal bursts to produce output signal representations for each signal burst representing the phase of such burst relative to the phase of said oscillator signal, said phase detecting means comprising first multiplying means connected to multiply said first oscillator signal times each of said signal bursts to produce an impulse for each burst having a DC component proportional to the cosine of the phase angle between such signal burst and said oscillator signal, second multiplying means connected to multiply said second oscillator signal times each signal burst to produce an impulse for each signal burst having a DC component proportional to the sine of the phase angle between such signal burst and said first oscillator signal, first integrating means for integrating the output of said first multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said first multiplying means, and second integrating means for integrating the output of said second multiplying means for the interval of each of said signal bursts to produce an output signal proportional to the integral of each impulse produced by said second multiplying means, said first and second integrating means commencing integration at the start of each of said signal bursts and ending integration at the end of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 9

A phase measuring system as recited in claim 5 wherein said signal representations representing said sine and cosine each comprises digital signals.

Claim 10

A phase measuring system for measuring the relative phase of received AC signal bursts comprising an output for receiving said signal bursts, an oscillator producing first and second waveforms at the frequency of said signal bursts and displaced from one another by 90*, first multiplying means connected to multiply said first output waveform of said oscillator times the signal burst received on said input and to produce an impulse for each signal burst having a DC component proportional to the cosine of the phase angle between such signal burst and said first waveform, second multiplying means connected to multiply said second waveform times each signal burst received on said input to produce an output impulse for each signal burst having a DC component proportional to the sine of the phase angle between such signal burst and said first oscillator waveform, first integrating means for integrating the output of said firSt multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said first multiplying means, and a second integrating means for integrating the output of said second multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said second integrating means, said first and second integrating means commencing integration at the start of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 11

A phase measuring system for measuring the relative phase of received AC signal bursts comprising an output for receiving said signal bursts, an oscillator producing first and second waveforms at the frequency of said signal bursts and displaced from one another by 90*, first multiplying means connected to multiply said first output waveform of said oscillator times the signal burst received on said input and to produce an impulse for each signal burst having a DC component proportional to the cosine of the phase angle between such signal burst and said first waveform, second multiplying means connected to multiply said second waveform times each signal burst received on said input to produce an output impulse for each signal burst having a DC component proportional to the sine of the phase angle between such signal burst and said first oscillator waveform, first integrating means for integrating the output of said firSt multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said first multiplying means, and a second integrating means for integrating the output of said second multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said second integrating means, said first and second integrating means commencing integration at the start of each of said signal bursts, said integrating means including means to reset the output of said integrating means to zero between said signal bursts.

Claim 12

A phase measuring system comprising a source of sequential AC signal bursts of varying phases, an oscillator producing first and second waveforms at the frequency of said signal bursts displaced from one another by 90*, first multiplying means connected to multiply said first output waveform of said oscillator times said signal bursts and produce an impulse for each signal burst having a DC component proportional to the cosine of the phase angle between such signal burst and said first waveform, and second multiplying means connected to multiply said second waveform times each of said signal bursts to produce an output impulse for each signal burst having a DC component proportional to the sine of the phase angle between such signal burst and said first oscillator waveform, said first multiplying means comprising a first electronic switch closing during one half of each cycle of said first oscillator waveform and opening during the other half of each cycle said SAID first oscillator waveform, said second multiplying means comprising an electronic switch closing during one half of each cycle of said second oscillator waveform and opening during the other half of each cycle of said second oscillator waveform, first integrating means for integrating the output of said first multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said first multiplying means, and second integrating means for integrating the output of said second multiplying means for the integral of each of said signal bursts to produce an impulse proportional to the integral of each impulse produced by said second multiplying means, said first and second integrating means commencing integration at the start of each of said signal bursts, said first and second integrating means including means to reset the outputs of said first and second integrating means to zero between signal bursts and means to convert the output signals of said first and second integrating means at the end of each of said signal bursts to digital signals.

Claim 13

A phase measuring system comprising a source of sequential AC signal bursts of varying phases, an oscillator producing first and second waveforms at the frequency of said signal bursts displaced from one another by 90*, first multiplying means connected to multiply said first output waveform of said oscillator times said signal bursts and produce an impulse for each signal burst having a DC component proportional to the cosine of the phase angle between such signal burst and said first waveform, and second multiplying means connected to multiply said second waveform times each of said signal bursts to produce an output impulse for each signal burst having a DC component proportional to the sine of the phase angle between such signal burst and said first oscillator waveform, said first multiplying means comprising a first electronic switch closing during one half of each cycle of said first oscillator waveform and opening during the other half of each cycle said SAID first oscillator waveform, said second multiplying means comprising an electronic switch closing during one half of each cycle of said second oscillator waveform and opening during the other half of each cycle of said second oscillator waveform, first integrating means for integrating the output of said first multiplying means for the interval of each of said signal bursts to produce an output signal representing the integral of each impulse produced by said first multiplying means, and second integrating means for integrating the output of said second multiplying means for the integral of each of said signal bursts to produce an impulse proportional to the integral of each impulse produced by said second multiplying means, said first and second integrating means commencing integration at the start of each of said signal bursts, said first and second integrating means including means to reset the outputs of said first and second integrating means to zero between signal bursts and means to convert the output signals of said first and second integrating means at the end of each of said signal bursts to digital signals.