Abstract: A communication system is proposed for transmitting at least one of the data, the program, and a combination of them from a host facility to a communicator such as a communication terminal device. In this communication system, the data or the program becomes unable to be used when a predetermined time has elapsed after it is transmitted from the host facility to the communicator. This communication system is provided with the function of giving a warning before the use of the transmission becomes unable and the function of resuming the use in accordance with the user's instruction even after the use becomes unable.

Abstract: An interactive communication system is proposed for communicating software of video games or karaoke music from a host facility or distributor to end users. The system includes a communication terminal device provided at the end user. The communication terminal device includes a computer and a device for performing interactive communication with the host facility. The communication terminal device also includes temporary storage device in which video game data or karaoke data received from the host facility is temporarily stored. Game data stored in the temporary storage device is automatically deleted after a predetermined time period. Instead of the data deletion, the system can block the view displayed on the screen of the terminal device when a predetermined time has elapsed. The game data can be transmitted from broadcasting station to the terminal device via broadcasting wave.

Abstract: An interactive communication system is proposed for communicating software of video games or karaoke music from a host facility or distributor to end users. The system includes a communication terminal device provided at the end user. The communication terminal device includes a computer and a device for performing interactive communication with the host facility. The communication terminal device also includes temporary storage device in which video game data or karaoke data received from the host facility is temporarily stored. The communication terminal device further includes outputting means for outputting the game data or karaoke data. Game data stored in the temporary storage device is automatically deleted after a predetermined time period.