Apparatus consisting of plurality of units executing mutual back-up, and its starting system


Application Number: 00109007
Application Date: 2000.06.01
Publication Number: 1276545
Publication Date: 2000.12.13
Priority Information: 1999/6/2 JP 154732/1999
International: G05B9/03
Applicant(s) Name: NEC Corp.
Address:
Inventor(s) Name: Fukunaka Seiji
Patent Agency Code: 11021
Patent Agent: liu xiaofeng
Abstract The present invention provided a device composed of a plurality of units performing mutual backup. A first unit taking charge of the execution of the function of a device, a second unit storing main backup data and a third unit storing sub backup data are respectively provided with fields A3, A1 and A2 in which date and hour information of when operation is started is described/updated, the second unit storing the main backup data and the third unit storing sub backup data are respectively provided with fields B1 and B2 in which the information of date and hour when backup data is copied is described/updated, and in the case of starting a device, backup data is selected by referring to the date and hour information described in the fields A3, A1 and A2, and the date and hour information described in the fields B1 and B2.