Signal processing method for maintaining signal relative relationship and electronic device thereof
US11210985B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2020 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Mar 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal processing method for maintaining a signal relative relationship and an electronic device thereof are provided. The signal processing method includes: detecting that a current input period of a vertical synchronization signal changes relative to a previous input period; determining whether a frequency difference between a pulse width modulation signal and the vertical synchronization signal is within an acceptable range, and when the frequency difference is not within the acceptable range, performing a frequency adjustment stage to adjust a period of the pulse width modulation signal to be close to the current input period; selectively performing a phase adjustment stage to adjust a phase of the pulse width modulation signal to a phase of the vertical synchronization signal; and maintaining a relative phase relationship between the pulse width modulation signal and the vertical synchronization signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.