Patent ID: 11870444
Assignee: PUFSECURITY CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. An entropy source circuit, comprising:
an input data control circuit, configured to output a start signal, input data, and reference data corresponding to the input data;
a digital circuit, having an input terminal and an output terminal, wherein the input terminal of the digital circuit is configured to receive the input data;
a determination circuit, coupled to the output terminal of the digital circuit, configured to receive the reference data, wherein when an output generated on the output terminal of the digital circuit is equal to the reference data, the determination circuit generates a determination signal; and
a time-to-digital converter (TDC), coupled to the input data control circuit and the determination circuit, configured to receive the start signal and generate entropy data according to the start signal and the determination signal.