Level indicating system
US4183025A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1978 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Mar 10, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A level indicating apparatus indicates the peak level of an analog signal and also indicates the instantaneous value of the analog signal during a recurring time interval of predetermined length. The apparatus includes a circuit for generating, during each recurring time interval, a train of pulses whose number corresponds to the level of the analog signal, a storage device which may be a shift register for storing the train of pulses, a circuit for forming a pulse whose position corresponds to the peak level of the analog signal, a feedback circuit for feeding the pulse, whose position corresponds to the peak level, back to the storage device to be combined with the train of pulses corresponding to the instantaneous value of the analog signal, and a display for indicating the peak value. Preferably the display also indicates the instantaneous value of the analog signal. The circuit for forming the pulse whose position corresponds to the peak value can include a logic differentiation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.