Oscillation detecting apparatus and test apparatus
US7034562B2 · kind B2 · utility
2Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 2004 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | May 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/1658
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oscillation detecting apparatus for detecting oscillation of a signal includes a high pass filter for generating an alternating current signal from which a direct current component of the signal is removed, a slicing circuit for generating a limit signal which results from restricting an amplitude level of the alternating current signal to a level lower than a predetermined level, an integration circuit for integrating a waveform of the limit signal during a predetermined period, and a comparator for detecting whether or not the signal oscillates based on a value of the waveform integrated by the integration circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.