Random noise generator and method for generating random noise

A random noise and random noise source technology, applied in the direction of pulse generation with predetermined statistical distribution of parameters, output stability, electrical components, etc., can solve problems such as reducing the unpredictability of bit streams

Inactive Publication Date: 2012-02-01
AVAGO TECH WIRELESS IP SINGAPORE PTE
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The current random bitstream generator injects a bias into the random bitstream generator which reduces the unpredictability of the bitstream

Method used

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  • Random noise generator and method for generating random noise
  • Random noise generator and method for generating random noise
  • Random noise generator and method for generating random noise

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Embodiment Construction

[0028] Noise sources in circuits such as FET channels introduce a certain amount of unpredictability in the signals passing through them. The term "unpredictability" as used here intends to mean that, given complete knowledge of the circuit and the signal waveform up to time "t", it is impossible to predict the time "t + Δt" within certain accuracy limits. The signal value at ". Since each time a prediction is made, the chance of the prediction being wrong is close to 50%, the result can be thought of as a random string of bits. The term "random" as used herein is not necessarily intended to mean pure randomness in the theoretical sense. For a signal to be random enough to be useful, it doesn't need to be purely random. The degree of randomness or unpredictability required depends on the specific application. Accordingly, the term "random" will be used herein to indicate a degree of unpredictability or randomness sufficient for a given application.

[0029] Some main objec...

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Abstract

The present invention provides a random noise signal generating circuit comprising a random noise source generating a random noise signal, an amplifying circuit amplifying the random noise signal to generate an amplified random noise signal, a feedback loop having a DC offset correction circuit, and calculating Harmonizer. A DC offset correction circuit processes the feedback portion of the amplified random noise signal to generate a DC offset correction signal. A summer sums the random noise signal generated by the random noise source and the DC offset correction signal to generate a summed signal. A summer is electrically coupled to the amplification circuit to provide a summed signal to the amplification circuit. An amplification circuit amplifies the summed signal to generate a random noise output signal.

Description

technical field [0001] The present invention relates to the generation of random numbers, and more particularly to the generation of random noise. Background technique [0002] Random number generation is an important aspect of many digital and electronic applications. For example, in the field of cryptography, the generation of random numbers is crucial to encryption algorithms. Random bit streams are sequences of binary signals that have no discernible pattern or repeatability over time. [0003] In electronic circuits, random bit streams can be generated from sources that naturally exhibit random properties. For example, thermal noise in a CMOS field effect transistor (FET) channel injects a random component into the value of the current flowing through the channel, which can then be amplified to obtain a sufficiently random signal for practical use. It is generally not possible to obtain a purely random signal by practical means, although it is theoretically possible....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L1/00H03K3/84
Inventor 小罗伯特・H・米勒
Owner AVAGO TECH WIRELESS IP SINGAPORE PTE
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