Meter driving system
US5315536A · kind A · utility
7Cited by
4References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Apr 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R7/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A meter driving system measures a period of input signals, and operates meters based on the measured period data. When no period data arrive in a preset period of time after the last period data, the lapsed time is treated as the period data so as to renew the meter indication. The meter driving system is very responsive to a signal whose frequency is gradually decreased, thereby giving the indication with little delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.