JP2795192B

PURPOSE: To surely restore data destroyed caused by the turning-off of a power supply by minimizing the number of the data region of an EEPROM required for one measuring item to reduce the rewriting time of data in the data region. CONSTITUTION: An EEPROM comprises three data regions M1, M2, M3, and...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HOSOE KATSUHARU, ITO TERUYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CALCULATING COMBUSTION ENGINES COMPUTING CONTROLLING COMBUSTION ENGINES COUNTING ELECTRIC DIGITAL DATA PROCESSING HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE: To surely restore data destroyed caused by the turning-off of a power supply by minimizing the number of the data region of an EEPROM required for one measuring item to reduce the rewriting time of data in the data region. CONSTITUTION: An EEPROM comprises three data regions M1, M2, M3, and all of them are brought into the erase state 'FFFF' in the initial state (0 cycle) and the data regions M1, M2, M3 are sequentially counted down for every minimum time unit (cycle) required for the measuring item. The rewriting of data from '1' to '0' can be performed for every individual element (every cell) in the countdown, and since it is unnecessary to erase the whole, the processing time required for rewriting can be reduced. Even when the data of one data region is brought into the abnormal condition, the data can be surely restored by comparing the data with the count value of the other two data regions.