Integrated circuit, and digital fingerprint generation circuit and method thereof
AssigneesBeijing BOE Technology Development Co., Ltd., Boe Technology Group Co., Ltd.
InventorsXiangye Wei, Yiming Bai, Liming Xiu
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Abstract
A digital fingerprint generation circuit based on an integrated circuit is provided. In the digital fingerprint generation circuit, a control unit is configured to: generate a first control word and a second control word, and transmit the first control word and the second control word to a first clock generator and a second clock generator respectively, so that the first clock generator generates a first clock signal based on the first control word, and the second clock generator generates a second clock signal based on the second control word; and a frequency detector generates a digital fingerprint of the integrated circuit based on the first clock signal and the second clock signal.
Claims20
A digital fingerprint generation circuit based on an integrated circuit, comprising:
- a control unit, a first clock generator, a second clock generator, and a frequency detector, wherein
- the control unit is electrically coupled with the first clock generator and the second clock generator, and the control unit is configured to:
- generate a first control word and a second control word, transmit the first control word to the first clock generator, and transmit the second control word to the second clock generator;
- the first clock generator is further electrically coupled with the frequency detector, and the first clock generator is configured to:
- generate a first clock signal based on the first control word and transmit the first clock signal to the frequency detector;
- the second clock generator is further electrically coupled with the frequency detector, and the second clock generator is configured to:
- generate a second clock signal based on the second control word and transmit the second clock signal to the frequency detector;
- and
- the frequency detector is configured to generate a digital fingerprint of the integrated circuit based on the first clock signal and the second clock signal;
- wherein the first clock generator and the second clock generator have different manufacturing deviations, and both of the first control word and the second control word have an integer portion and a fraction portion.
An integrated circuit, comprising a power source and a digital fingerprint generation circuit, wherein the power source is electrically coupled with the digital fingerprint generation circuit, and the power source is configured to supply power to the digital fingerprint generation circuit;
- and the digital fingerprint generation circuit comprises:
- a control unit, a first clock generator, a second clock generator, and a frequency detector, wherein
- the control unit is electrically coupled with the first clock generator and the second clock generator, and the control unit is configured to:
- generate a first control word and a second control word, transmit the first control word to the first clock generator, and transmit the second control word to the second clock generator;
- the first clock generator is further electrically coupled with the frequency detector, and the first clock generator is configured to:
- generate a first clock signal based on the first control word and transmit the first clock signal to the frequency detector;
- the second clock generator is further electrically coupled with the frequency detector, and the second clock generator is configured to:
- generate a second clock signal based on the second control word and transmit the second clock signal to the frequency detector;
- and
- the frequency detector is configured to generate a digital fingerprint of the integrated circuit based on the first clock signal and the second clock signal;
- wherein the first clock generator and the second clock generator have different manufacturing deviations, and both of the first control word and the second control word have an integer portion and a fraction portion.
A digital fingerprint generation method of an integrated circuit, applicable to a digital fingerprint generation circuit, the digital fingerprint generation circuit comprising:
- a control unit, a first clock generator, a second clock generator, and a frequency detector, wherein the control unit is electrically coupled with the first clock generator and the second clock generator, and both of the first clock generator and the second clock generator are further electrically coupled with the frequency detector;
- the method comprising:
- generating a first control word and a second control word and transmitting the first control word to the first clock generator and the second control word to the second clock generator by the control unit;
- generating a first clock signal based on the first control word and transmitting the first clock signal to the frequency detector by the first clock generator;
- generating a second clock signal based on the second control word and transmitting the second clock signal to the frequency detector by the second clock generator;
- and
- generating a digital fingerprint of the integrated circuit based on the first clock signal and the second clock signal by the frequency detector;
- wherein the first clock generator and the second clock generator have different manufacturing deviations, and both of the first control word and the second control word have an integer portion and a fraction portion.
Dependencies are inferred from the claim text.