Device and Method For Generating Noise Signals and Use Of a Device For Generating Noise Signals
AssigneeTecdata AG
InventorsUrs BÜHLER, Ralf OTTE, Frank BERGMANN
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Abstract
The present invention firstly relates to a device for generating noise signals. Said device comprises at least one avalanche diode which is arranged in such a way that it is reverse-biased during intended operation of the device. Moreover, the invention relates a method for generating a noise signal by means of such a device and to a use of said device and to a method for evaluating a type of an avalanche diode or of an avalanche transistor.
Claims14
Device for generating noise signals, comprising at least two series-connected diodes which are arranged in such a way that they are reverse-biased during intended operation of the device.
Method for generating a noise signal with the aid of a device, wherein the device comprises at least two series-connected diodes which are arranged in such a way that they are reverse-biased during intended operation of the device and wherein the device is operated in such a way that the diodes are reverse-biased.
Method for evaluating a type of an avalanche diode or of an avalanche transistor, comprising the following steps:
- a) conducting a current through the avalanche diode or through the emitter-base junction of the avalanche transistor in the reverse direction;
- b) deriving the voltage signal present between the poles of the avalanche diode or between the emitter and the base of the avalanche transistor;
- c) digitizing the voltage signal in order to generate a digitized n-bit noise signal;
- d) carrying out an AIS31 test with the digitized noise signal and determining the Shannon entropy of the digitized noise signal;
- e) if the Shannon entropy is at least n/8×7.97:
- positive evaluation of the avalanche diode or the avalanche transistor;
- or, if the Shannon entropy is less than n/8×7.97:
- negative evaluation of the avalanche diode or the avalanche transistor.
Dependencies are inferred from the claim text.