Patent ID: 11949420
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A clock spread spectrum circuit, comprising:
a duty cycle adjustment circuit, configured to generate a target voltage having a duty cycle that is equal to a target duty cycle;
a control circuit, configured to generate a frequency control word according to a modulation parameter, wherein the frequency control word changes discretely with time; and
a signal generation circuit, configured to receive the target voltage and the frequency control word and generate and output a spread spectrum output signal that is spectrum-spread according to the target voltage and the frequency control word, wherein the spread spectrum output signal corresponds to the frequency control word and a duty cycle of the spread spectrum output signal is the target duty cycle;
wherein the frequency control word is expressed as:

F(t)=I+r(t),

wherein F(t) is the frequency control word, I is an integer part of the frequency control word, I is a constant and an integer, r(t) is a decimal part of the frequency control word, r(t) is a decimal and discretely changes with the time, and t represents the time.