Patent ID: 6525977
Filing Date: 2003-02-25
Classification: G11C,H03K,H04L

Abstract:
A circuit configuration, comprising:a processing section; an input section operatively connected to said processing section, said input section being configured to at least receive an electrical input signal fed to said input section and to transfer the electrical input signal to said processing section, said input section including a reception circuit, an input line device, and a transfer line device connected to said processing section; a protection device formed in said transfer line device, said protection device including a processing circuit with a filter device and a frequency converter connected downstream of said filter device; a feed line device connected to said protection device, said feed line device being at least configured to feed the electrical input signal from said input line device to said protection device; said protection device being configured to analyze the electrical input signal with regard to interference signals present in the electrical input signal; said filter device being configured to split off a given high-frequency component from the electrical input signal and to provide the given high-frequency component as a processing signal; said frequency converter being configured to transform the given high-frequency component of the electrical input signal into at least one frequency range selected from the group consisting of a low-frequency range and an intermediate frequency band; and said protection device being configured to prevent a transferring of the electrical input signal from said input section via said transfer line device to said processing section when interference signals are present in the electrical input signal.