Limited write non-volatile memory and a franking machine making use thereof
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United States of America Patent
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Jan 8, 1991
Grant Date -
N/A
app pub date -
Mar 29, 1988
filing date -
Mar 31, 1987
priority date (Note) -
Expired
status (Latency Note)
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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.
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