Limited write non-volatile memory and a franking machine making use thereof
US4984191A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1988 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Mar 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00403
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The limited write non-volatile memory is characterized in that it is constituted by a limited memory space (1)in an EEPROM which is organized as a first zone (5) for recording the more significant bits of successive data sets at fixed addresses, and a second zone (6) for recording at least the remaining less significant bits of said data sets at addresses which change around a closed loop of addresses, said less significant bits being recorded with at least one redundancy bit which is common both to the more significant bits recorded in the first zone and the less significant bits recorded in the second, said memory being under the control of a programmed circuit for processing and addressing control. Said memory space constitutes the meter memory (CA, CD, CT) of a franking machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.