Checking of the skew constancy of a bit flow
First Claim
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1. A circuit for generating a bit flow based on a noise source and on at least one first element for normalizing the initial bit flow provided by this noise source, comprising:
- at least one second normalization element of the same noise source, of a different flow rate than the first element; and
an element for calculating the difference between the respective flow rates of the two normalization elements.
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Abstract
A method and a circuit for detecting a loss in the equiprobable character of a first output bit flow originating from at least one first element of normalization of an initial bit flow, including analyzing the flow rate of the normalization element.
26 Citations
12 Claims
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1. A circuit for generating a bit flow based on a noise source and on at least one first element for normalizing the initial bit flow provided by this noise source, comprising:
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at least one second normalization element of the same noise source, of a different flow rate than the first element; and an element for calculating the difference between the respective flow rates of the two normalization elements. - View Dependent Claims (2)
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3. A method for detecting a loss in equiprobable character of a first output bit flow originating from at least one first element of normalization of an initial bit flow, said method comprising:
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submitting the initial flow to at least one second flow rate normalization element different from the first one; and checking constancy of a difference between respective output flow rates of the first and second normalization elements in a checking circuit and providing a signal indicative of the constancy of the difference between the respective output flow rates and thereby indicative of the equiprobable character of the first output flow. - View Dependent Claims (4)
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5. A method for generating a bit flow, comprising:
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normalizing an input bit flow in a first normalization circuit to provide a first normalized bit flow at a first flow rate, the first normalized bit flow constituting an output bit flow; normalizing the input bit flow in a second normalization circuit different from the first normalization circuit to provide a second normalized bit flow at a second flow rate; checking constancy of a difference between the first flow rate and the second flow rate; and generating a valid signal if the constancy of the difference between the first flow rate and the second flow rate is acceptable. - View Dependent Claims (6, 7, 8)
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9. A circuit for generating a bit flow, comprising:
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a first normalization circuit configured to normalize an input bit flow to provide a first normalized bit flow at a first flow rate, the first normalized bit flow constituting an output bit flow; a second normalization circuit different from the first normalization circuit, wherein the second normalization circuit is configured to provide a second normalized bit flow at a second flow rate ; and a checking circuit configured to check a constancy of a difference between the first flow rate and the second flow rate and to generate a valid signal if the constancy of the difference between the first flow rate and the second flow rate is acceptable. - View Dependent Claims (10, 11, 12)
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Specification