Physical quantity measurement apparatus, electronic apparatus, and vehicle
US10884041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2017 |
| Grant date | Jan 5, 2021 |
| Priority date | — |
| Expiry date | Jun 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A physical quantity measurement apparatus includes a first resonator, a second oscillator, and an integrated circuit device. The integrated circuit device includes a first oscillation circuit that causes the first resonator to oscillate, and thus generate a first clock signal having a first clock frequency, a second oscillation circuit that causes the second oscillator to oscillate, and thus generate a second clock signal having a second clock frequency which is different from the first clock frequency, and a measurement unit that is provided with a time-to-digital conversion circuit which converts time into a digital value by using the first clock signal and the second clock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.