Patent ID: 7523025

Claim:
A host terminal emulation program that operates a client computer, a monitor being connected to the client computer for displaying screens and a communication control unit being connected to the client computer for transmitting/receiving data to/from a host computer, said emulation program causing the client computer to perform the steps of: detecting a coordinate at which a predetermined first attribute is set from coordinates, characters and attributes in character user interface (CUI) screen data generated in said host computer when said communication control unit receives CUI screen data from said host computer; generating graphical user interface (GUI) screen data in which GUI parts corresponding to said first attribute are set at respective coordinates following the detected coordinate; correcting, when the coordinate at which said first attribute is set represents the upper left corner of the screen, said GUI screen data with reference to the coordinate at which said first attribute is set by deleting said GUI parts; and displaying a screen based on the corrected GUI screen data on said monitor.