Energy based pulse position detector for telephone wire networks
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United States of America Patent
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Nov 28, 2000
Grant Date -
N/A
app pub date -
Jun 23, 1998
filing date -
Jun 23, 1998
priority date (Note) -
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Abstract
A system for detecting a pulse position is provided in a telephone wire network. An absolute value detector determines the absolute value of a received pulse signal supplied from a telephone wire, and produces a waveform envelope. A low-pass filter filters out high frequency components of the envelope. An integrator performs the time integration of the filtered envelope to produce an integrated waveform representing the energy of the received pulse signal. A slicing circuit determines when the integrated waveform crosses threshold level to detect the time position corresponding to the arrival time of the received pulse signal. The arrival time position is translated into a digital value representing data received form the telephone wire.
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