Sony patents signal generator that adjusts timing in real time
Sony describes a device that creates stable electronic signals using a digitally controlled oscillator. It uses two separate control paths to adjust the signal timing, including a method that corrects errors in real time by comparing the signal to a reference.
In the filing’s own words
Provided is a signal generation device including: a digitally controlled oscillator, a first path including a phase-locked loop that detects a phase error between an output of the digitally controlled oscillator and a reference signal and performs feedback control of the digitally controlled oscillator via a loop filter, a second path that controls the digitally controlled oscillator based on the reference signal without passing through the loop filter, and a first calibration unit that performs calibration in real time on the digitally controlled oscillator based on a correlation between the phase error and a waveform of the reference signal.
What exactly they claim (claim 1)
1. A signal generation device comprising: a digitally controlled oscillator; a first path including a phase-locked loop that detects a phase error between an output of the digitally controlled oscillator and a reference signal, and performs feedback control of the digitally controlled oscillator via a loop filter; a second path that controls the digitally controlled oscillator based on the reference signal without passing through the loop filter; and a first calibration unit that performs calibration in real time on the digitally controlled oscillator based on a correlation between the phase error and a waveform of the reference signal.
Facts
- Company
- Sony (Sony Semiconductor Solutions Corporation)
- Official title
- SIGNAL GENERATION DEVICE, IMAGING DEVICE, AND ELECTRONIC APPARATUS
- Publication number
- US20260280571A1
- Application number
- 19471629
- Filed
- Apr 30, 2024
- Published
- Sep 17, 2026
- Inventors
- 2
- Claims
- 16
Classified under
H03L 7/0992 Electricity & electronicsH03L 7/093 Electricity & electronicsH04N 25/7795 Electricity & electronicsMore from Sony 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.