Patent ID: 9020013
Filing Date: 2015-04-28
Classification: A61B,A61N,H03F,H04B,H04L

Abstract:
1. An apparatus for processing signals wherein the apparatus comprises: a plurality of channels with main signal inputs for receiving input signals, wherein input signals each comprise a specific signal component and a signal component common to all input signals, wherein each channel comprises an impedance transforming input amplifier, wherein the apparatus is configured to supply to the first input of each input amplifier a respective input signal and, to the second input, an analog reference signal which is equal for all channels; a digital signal processor and one or more analog-digital converters for supplying the signals provided by the input amplifiers to the digital signal processor, wherein the signal processor is configured to convert signals received from the one or more analog-digital converters at least into one or more output signals, wherein the signal processor is configured to process the signals received from the one or more analog-digital converters, for providing a digital reference signal; and a digital-analog converter for converting the digital reference signal into said analog reference signal, wherein each channel comprises a DC-compensator wherein an input of the DC-compensator is coupled via a digital-analog converter to said signal processor for receiving a control signal therefrom, wherein the dc-compensation element is configured to compensate the input signals, received via main inputs, and for providing the compensated input signals to the first inputs of the input amplifiers.