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

Claim 15:
16. The method according to claim 15, wherein generating the digital fingerprint of the integrated circuit based on the first clock signal and the second clock signal by the frequency detector comprises:
outputting a first parameter value by the frequency detector in response to a difference between a period of the second clock signal and a period of the first clock signal being greater than or equal to a difference threshold;
outputting a second parameter value by the frequency detector in response to a difference between the period of the second clock signal and the period of the first clock signal being less than the difference threshold;
wherein after a plurality of periods, the digital fingerprint of the integrated circuit is formed by at least one first parameter value and at least one second parameter value output by the frequency detector.