Verfahren und Vorrichtung zum Abtasten eines Datensignals

Verfahren und Vorrichtung zum Abtasten eines Datensignals

A method and an apparatus for scanning a data signal are provided whereby a plurality of scanning signals (P 0 , P 1 , P 2 , P 3 ) delayed successively by a respective phase difference are generated, for example, by a quadrature oscillator ( 1 ). A first data signal (D) is scanned with these scannin...

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Hauptverfasser: BOERKER, PHILIPP, SCHEIDELER, DIRK
Format: Patent
Sprache:ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator BOERKER, PHILIPP
SCHEIDELER, DIRK
description A method and an apparatus for scanning a data signal are provided whereby a plurality of scanning signals (P 0 , P 1 , P 2 , P 3 ) delayed successively by a respective phase difference are generated, for example, by a quadrature oscillator ( 1 ). A first data signal (D) is scanned with these scanning signals (P 0 -P 3 ) in order to generate a plurality of second data signals (D 0 -D 3 ). Because the direction of rotation of the quadrature oscillator ( 1 ) can vary, depending on random starting conditions, the direction of rotation is determined by means of phase detectors ( 4 ). These phase detectors ( 4 ) are preferably connected to the outputs of the clock dividers ( 3 ). Depending on the direction of rotation determined, the second data signals (D 0 -D 3 ) are allocated to output channels (A 0 -A 3 ) by a change-over unit ( 6 ).
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A first data signal (D) is scanned with these scanning signals (P 0 -P 3 ) in order to generate a plurality of second data signals (D 0 -D 3 ). Because the direction of rotation of the quadrature oscillator ( 1 ) can vary, depending on random starting conditions, the direction of rotation is determined by means of phase detectors ( 4 ). These phase detectors ( 4 ) are preferably connected to the outputs of the clock dividers ( 3 ). 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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Verfahren und Vorrichtung zum Abtasten eines Datensignals
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