Samsung patents circuit to smooth out clock signals in chips
Samsung describes a phase-locked loop, a common electronic circuit used to synchronize timing signals in chips. The design includes a specific component that limits how much the signal can fluctuate, helping to keep the clock steady.
In the filing’s own words
A phase locked loop is provided. The phase locked loop includes: a digitally controlled oscillator configured to generate an output clock according to a frequency control signal; a frequency divider circuit configured to generate a feedback clock by frequency dividing the output clock based on a first divide ratio value; a phase detection circuit configured to generate a phase difference signal according to a phase difference between the feedback clock and an externally provided reference clock; a loop filter circuit configured to generate a frequency control raw signal based on the phase difference signal; and a peaking suppression circuit configured to generate the frequency control signal by limiting a fluctuation range of the frequency control raw signal.
What exactly they claim (claim 1)
1. A phase locked loop, comprising: a digitally controlled oscillator configured to generate an output clock according to a frequency control signal; a frequency divider circuit configured to generate a feedback clock by frequency dividing the output clock based on a first divide ratio value; a phase detection circuit configured to generate a phase difference signal according to a phase difference between the feedback clock and an externally provided reference clock; a loop filter circuit configured to generate a frequency control raw signal based on the phase difference signal; and a peaking suppression circuit configured to generate the frequency control signal by limiting a fluctuation range of the frequency control raw signal.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- PHASE LOCKED LOOP AND OPERATION METHOD THEREOF
- Publication number
- US20260303104A1
- Application number
- 19351947
- Filed
- Oct 7, 2025
- Published
- Oct 1, 2026
- Inventors
- 5
- Claims
- 20
Classified under
H03L 7/113 Electricity & electronicsH03L 7/093 Electricity & electronicsH03L 7/099 Electricity & electronicsH03L 7/18 Electricity & electronicsMore from Samsung in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.