Patent ID: 11893142
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. 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.