Abstract: On knowledge information processing and especially in a plan making system such as a system for generating schedule diagrams of trains and personnel, it becomes necessary to make or modify a plan by using a plurality of work stations when the plan becomes large-sized. At this time, the work stations are provided with equal plan making function. Thus, the work stations can divide planning responsibilities. Further, work stations are provided with priorities. Thus, management of competition among a plurality of work stations is facilitated and overhead caused by communication among a plurality of devices is reduced.
Type:
Grant
Filed:
October 10, 1990
Date of Patent:
August 19, 1997
Assignees:
Hitachi, Ltd., Hitachi Information and Control Systems, Inc.
Inventors:
Setsuo Tsuruta, Kiyomi Kishi, Kuniaki Matsumoto
Abstract: A process controlling method and apparatus which uses a flowchart language program and ladder programs with an intermediate register accessible using the same name by both the flowchart language program and the ladder programs. Each ladder program defines the operation of a machine, including an interlock condition of the machine operation. The flowchart language program defines an automatic operation flow which sequentially activates the ladder programs using the data in the intermediate register. This arrangement allows the flowchart language program to be separated from the ladder programs improving productivity, serviceability and security of the programs.
Type:
Grant
Filed:
August 15, 1994
Date of Patent:
December 3, 1996
Assignees:
Hitachi, Ltd., Hitachi Information and Control Systems, Inc.
Abstract: An interactive intelligent interface in a system which performs an interactive processing making the system recognize the capacity of a user of the system. The system has a function of providing a processing method conformable to the recognized capacity of the system user, whereby a processing method to be performed by the system is changed in accordance with the operating or processing capacity of the system user so that a procedure desired by the system user can be performed irrespective of the operating or processing capacity of the system user.
Type:
Grant
Filed:
March 24, 1992
Date of Patent:
April 6, 1993
Assignees:
Hitachi Ltd., Hitachi Information and Control System Inc.