System zur Datenübertragung

摘要

The present invention relates to a method or a device for recognizing synchronous interfering signals in the course of a data transmission, during which pauses occur between wanted signals, where the duration of the shortest pause is Tp and the frequency of the electricity power supply system is f. The inventive method is characterized in that a time interval Td is defined which is smaller than the shortest Tp pause but larger than the longest period 1/f or 1/2f of a synchronous interfere, in that it is checked whether, where the time space T check is larger than Td, preferably by many times, for example four times larger, pauses occur which are longer than Td, and in that the occurence of such pauses is interpreted as revealing the presence of a wanted signal with no synchronous interference (interfering signals) and the absence of such pauses as revealing the presence of an interference. It is possible to work digitally and to avoid external building components.