Hitachi, Ltd.

Hitachi Software Engineering Company, Ltd.

Mitsuyuki Masui

Yukihito Maejima

Taihei Suzuki

Katsuhiko Yuura

Toko Ohtsubo

Noriyuki Abe

Kenji Mochizuki

Susumu Kawaguchi

Hikaru Nakatani

Yasuyoshi Kaneko

An equipment for displaying a specification of behavior of a real time system includes a program memory for storing a plurality of program objects for simulating operations of objects indicative of an arrangement of the real time system and a plurality of graphical symbol objects for expressing operational states of the objects and relationships between the objects in the form of a graphical symbol representation on a display screen. In the equipment, the plurality of program objects are linked with the plurality of symbol objects through an inter-program communication control routine. Each of the program objects, when receiving a message from the communication control routine, is executed for simulation operation according to the received message to thereby generate a new message to be sent to the associated program routine and a new message indicative of an object state change to be sent to one of the symbol objects corresponding to the associated object. Each of the symbol objects, when receiving the message from the communication control routine, is executed to change a display state of one of symbols corresponding to the associated symbol object on the display screen.

Equipment and method for interactive testing and simulating of a

An apparatus for supporting development of a graphic data driven program includes a data driven mechanism enabling instructions of the data driven program to be executed whenever all input data necessary for executing the instructions is available. The apparatus includes a terminal device for inputting and displaying a graphic data driven program, an input transforming section for transforming the inputted graphic data driven program into an intermediate file by referring to an instruction information data base, a wiring table transforming section for transforming the inputted graphic data driven program into a wiring table of instructions expressed in text which is independent of a target machine by referring to the intermediate file, a compile section for transforming the wiring table into an instruction template described with a language depending on the target machine, an instruction execution section for executing the instruction template, an instruction execution displaying section for displaying results of executing the instruction template superposed on the displayed graphic data driven program, and an instruction information tracing section for comparing actual results of executing the instruction template stored in a traced information file with correct results of executing the instruction template stored in a correct data base.

Apparatus for supporting graphic data driven program development and for

Growing community of inventors

Yokosuka, Japan

Mitsuyuki Masui