Unbalance signal complement method

A compensation method and a technology for balancing signals, which are applied in the direction of reducing unbalanced current interference, distribution line transmission systems, line transmission components, etc., and can solve the problems of unable to remove common-mode signal changes, unable to remove common-mode signals, and balance state damage, etc. question
CN1543083AInactive Publication Date: 2004-11-03ALPS ALPINE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ALPS ALPINE CO LTD
Publication Date
2004-11-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided is a method of correcting an unbalanced signal by which a common mode signal superposed on a balanced signal can be removed according to changes in the length and structure of a pair electric wire. The method of correcting an unbalanced signal is used for a signal transmission system which transmits a balanced data signal through the pair electric wire for connecting terminals. Prior to transmitting the balanced data signal between the terminals, two single detection signals of the same phases are transmitted from a detection signal transmitting and receiving section of the terminal to the terminal through the pair electric wire. When a detection signal transmitting and receiving section of the terminal receives the two single detection signals through the pair electric wire, it forms a differential detection signal which indicates the signal unbalanced state of the pair electric wire based on the single detection signals and then transmits the formed differential detection signal put in phase with the pair electric wire to the terminal. When the detection signal transmitting and receiving section of the terminal receives the differential detection signal through the pair electric wire, it makes performs unbalance correction with respect to a balanced data signal transmitted to the pair electric wire based on the received differential detection signal.
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Description

technical field

[0001] The present invention relates to a method for compensating unbalanced signals, in particular to preventing the occurrence of the error transmitted through the double-strand wire when two or more terminals are combined through the double-strand wire and the balanced data signal is transmitted through the double-strand wire. This is an unbalanced signal compensation method in which noise is superimposed on a balanced data signal transmitted in a signal unbalanced state of a pair of wires. Background technique

[0002] In general, as a signal transmission system using a pair of wires, it is known that two or more information terminals are combined on a double wire such as a power line that transmits alternating current, and any two information terminals among the two or more information terminals Using this pair of wires between them, a balanced data signal with a frequency much higher than that of the alternating current is superimposed on the alternatin...

Claims

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