Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Information and Control Systems Inc
Original Assignee
Hitachi Ltd
Hitachi Control Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi Control Systems IncfiledCriticalHitachi Ltd
Priority to JP57215596ApriorityCriticalpatent/JPS59106827A/ja
Publication of JPS59106827ApublicationCriticalpatent/JPS59106827A/ja
Publication of JPH0458263B2publicationCriticalpatent/JPH0458263B2/ja