Abstract: A terminal to be remote controlled via a communication network is provided with a communication controller 26A for receiving a remote operation message from a control terminal, a remote operation basic controller 20A for delivering remote operation input data extracted from the received message to an operating system, and an operation recording and playing controller 25A for recording and playing the remote operation input data and specific terminal operation data as remote operation history data.

Abstract: A method is provided for sending state and setting information on a local terminal to a remote terminal, for displaying the information, which is received, in an appropriate area in screen information on the remote terminal side, and for sending the processed screen information to the local terminal for display on the display of the local terminal. Also provided is a method for displaying the state and setting information on the local terminal in a transparent window through which underlying images can be seen.

Abstract: A data processing method is changed in accordance with the number pf colors in a bit map and the communication speed to thereby solve the problem in the background art. The number of colors used in the bit map is calculated. Image compression is performed by an appropriate compression method selected in accordance with the number of colors. Moreover, the image compression method is optimized in accordance with the communication speed between terminals in a remote operating system so that image quality can be prevented from being lowered in user's view. Accordingly, user's handling property and visibility can be kept good while the transfer size of image data can be reduced.

Abstract: A terminal to be remote controlled via a communication network is provided with a communication controller 26A for receiving a remote operation message from a control terminal, a remote operation basic controller 20A for delivering remote operation input data extracted from the received message to an operating system, and an operation recording and playing controller 25A for recording and playing the remote operation input data and specific terminal operation data as remote operation history data.