Abstract: The disclosed is a bidirectional monitoring system capable of a medical diagnosis and a commercial broadcast, comprising: a main server for providing commercial information, detailed commercial information in case a certain user selects the commercial information, a service page for receiving a user's request for the commercial information, and offering diagnosis result data in response to a medical diagnosis request which is received; a data communication network for allowing many and unspecified persons to access the main server in an on-line manner; and a monitoring device for receiving the commercial information from the main server to display them on a main screen after getting an on-line access to the main server via the data communication network, creating a subsidiary window on upper portion of one side of the main screen to output another commercial information or display medical diagnosis request data input according to the user's handling and then transmit them to the main server, and outputting a

Abstract: The present invention relates to a contents-providing system for portable terminal. The present invention includes a communication network, a contents server stored execution programs for operating portable terminal in at least one mode and contents in a form of database so as to support the portable terminal downloading the execution programs and contents in response to a user's request, the portable terminal downloading the execution program and contents from the contents server through the communication network so as to create a new mode and operating the portable terminal using the execution program and contents.