Line noise signal measurement system using analog signal compression with digital linearity correction
US4940947A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1989 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Feb 28, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A line noise signal measurement system is provided with detecting circuitry for providing a sensed analog signal. Compression circuitry is coupled to the detecting circuitry for providing an amplitude compressed signal responsive to the applied sensed signal. The compression circuitry has a stepwise substantially linear transfer function responsive to a variable magnitude of the applied sensed signal. Signal processing circuitry is coupled to the compression circuitry for sequentially generating a digital signal representative of the sensed analog signal. Digital processing circuitry sequentially identifies a maximum peak signal for a predetermined time interval and provides linearity correction for the identified maximum peak signals and generates a display of the corrected peak signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.