Detection circuit and detection method
US11402431B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2021 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Aug 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/085
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A detection circuit is configured to detect phase information between two clock signals of different frequencies, and the two clock signals include a low frequency clock signal and a high frequency clock signal. The detection circuit includes: a signal generation module, configured to detect the low frequency clock signal at an edge of the high frequency clock signal to generate a to-be-sampled signal, and generate a target sampling signal when the high frequency clock signal is kept at a preset level and the low frequency clock signal meets a preset condition; and a sampling module, connected with the signal generation module and configured to detect the to-be-sampled signal at an edge of the target sampling signal to generate a detection result signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.