Patent ID: 11868511
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A digital fingerprint generator, comprising:
a control circuit, configured to generate a control word;
a first pulse generation circuit, connected to the control circuit, and configured to output a first pulse signal in response to the control word;
a second pulse generation circuit, connected to the control circuit, having a same structure as the first pulse generation circuit, and configured to output a second pulse signal in response to the control word, wherein each of the first pulse signal and the second pulse signal comprises a first frequency signal and a second frequency signal, probabilities of occurrence of the first frequency signal and the second frequency signal being controlled by the control word; and
an output circuit, connected to the first pulse generation circuit and the second pulse generation circuit, and configured to output a digital fingerprint based on the first pulse signal and the second pulse signal according to a predetermined first rule;
wherein the first pulse generation circuit comprises:
a frequency synthesizer, connected to the control circuit and the output circuit, and configured to generate the first pulse signal in response to reference pulse signals with uniformly spaced phases, and the control word; wherein
the control word comprises a first coefficient and a second coefficient; and
the first pulse signal comprises the first frequency signal generated based on the reference pulse signals and the first coefficient, and the second frequency signal generated based on the reference pulse signals and the first coefficient, wherein a ratio of the first frequency signal to the second frequency signal in the first pulse signal is controlled by the second coefficient.