Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 26, 2010
Patent Application Number
12068657
Date Filed
February 8, 2008
Patent Primary Examiner
Patent abstract
Interface unit for voltage input signals comprising two or more input channels. The input signals of these two or more input channels are connected alternately by an analog multiplexer to an analog-to-digital converter. The A/D converter comprises an integrated sigma-delta modulator circuit which generates a digitized 1-bit signal representing the input signal voltage level for a control unit irrespective of whether the input channel signal is digital or analog. By means of the invention all input voltage channels are made similar such that the input channels of the interface unit can receive an analog or digital signal irrespective of each other.
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