Data accumulator and transponder with power back-up for time of day clock
US4495596A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Jun 10, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system is disclosed for accumulating data from a given number of meters. The data accumulating system is normally energized by a primary source of power for accumulating data with respect to the time of day. A clock is energized by the primary power source for providing a first time of day signal. Data from each of the meters is accumulated in its own counter. Processing means responsive to the time of day signal selectively accesses the counters and accumulates the data therefrom for specified intervals of time. Means responsive to the failure of the primary power source applies a secondary source of power to the clock to provide a second time of day signal. Upon restoration of the primary power source, the second time of day signal is transferred to the clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.