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

Claim 9:
10. The digital fingerprint generation circuit according to claim 1, further comprising: a third clock generator and a fourth clock generator, wherein
the control unit is further electrically coupled with the third clock generator and the fourth clock generator, and the control unit is further configured to: generate a third control word and a fourth control word, transmit the third control word to the third clock generator, and transmit the fourth control word to the fourth clock generator;
the third clock generator is further electrically coupled with the frequency detector, and the third clock generator is configured to: generate a third clock signal based on the third control word and transmit the third clock signal to the frequency detector;
the fourth clock generator is further electrically coupled with the frequency detector, and the fourth clock generator is configured to: generate a fourth clock signal based on the fourth control word and transmit the fourth clock signal to the frequency detector; and
the frequency detector is further configured to generate the digital fingerprint of the integrated circuit based on any two of the first clock signal, the second clock signal, the third clock signal, and the fourth clock signal;
wherein the first clock generator, the second clock generator, the third clock generator, and the fourth clock generator have different manufacturing deviations from each other, and both of the third control word and the fourth control word have an integer portion and a fraction portion.