Time-to-digital converter, circuit device, physical quantity measurement apparatus, electronic apparatus, and vehicle
US10401798B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Sep 3, 2019 |
| Priority date | — |
| Expiry date | Aug 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K19/20
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A time-to-digital converter includes a clock signal generation circuit that generates a first cycle signal having a voltage level that monotonously increases or decreases in a cycle corresponding to the clock frequency of a reference clock signal and further generates a first clock signal based on a first signal and the first cycle signal, a clock signal generation circuit that generates a second cycle signal having a voltage level that monotonously increases or decreases in a cycle corresponding to the clock frequency of a reference clock signal and further generates a second clock signal based on a second signal and the second cycle signal, and a processing circuit that converts a time difference between the transition timing of the first signal and the transition timing of the second signal into a digital value based on the first and second clock signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.