EQUALLTYPE DUPLICATE DATA CONTROL SYSTEM

摘要

PURPOSE:To secure a decision in a short time whether the renewal is possible or not by providing the function which memorizes the alteration information of the logic time given from other computers. CONSTITUTION:Table control unit 1 receives through terminal 2 the information for alteration of the logic time of other computers, alters the contents of logic time table 3 and starts logic time control unit 4. Table 3 consists of counters of the same number as the computers and memorizes the logic time of each computer. Unit 4 checks the contents of table 3, advances the logic time of the corresponding computer by one when the fact that the logic time of all other computers advance more than the corresponding computer is confirmed, and also informs the alteration of the logic time to other computers through terminal 5.