Detection circuitry with multiple overlapping thresholds
US4529892A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1982 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Nov 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16557
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Circuitry for discriminating between input signals having peak amplitudes which fall with two ranges includes two Schmitt triggers having their input terminals connected to a common circuit input terminal. The trigger points of the two Schmitt triggers overlap each other. The potential difference between the upper trigger points of the two Schmitt triggers establishes one of the input signal amplitude ranges. Signals with amplitudes greater than the upper trigger point of the higher of the two upper trigger points fall into the second of the two signal ranges. Decoder circuitry coupled to the outputs of the two Schmitt triggers determine if one or both of the Schmitt triggers is regularly responding to the input signal and thereby the relative amplitude range of the applied signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.