Information processing system provided with mobile terminal that can play back data written on page

An information processing system comprising:

• a mobile terminal;
• and
• a data management system connected to the mobile terminal via a network,
• wherein the mobile terminal includes:
• a display device displaying pages of a note;
• and
• a control unit including a CPU, and configured to act, when the CPU executes a program, as:
• an input receiver that receives a writing made on the page, displayed on the display device;
• an application executor that executes an application program;
• a note application realized when the application executor executes a note application program, being the application program configured to cause the display device to display the page and enable writing on the page;
• a recording requester that requests the data management system to record playback data, including the written data received by the input receiver and a task executed by the browser application program, with a time stamp added to the written data and the executed task;
• and
• a playback processor that plays back the written data and the executed task included in the playback data acquired from the data management system, in synchronization according to the time stamp,
• the data management system includes a data transmitter that transmits the playback data recorded in the data management system to outside of the information processing system, and
• the playback processor displays the page based on the playback data stored outside the information processing system on the display device, using the note application,
• wherein the data management system includes:
• a database for storing at least a part of the playback data, with respect each note;
• and
• a storage unit for storing an entity of at least a part of the playback data stored in the database,
• the data transmitter transmits the playback data stored in the database to outside of the information processing system, instead of transmitting the entity stored in the storage unit to outside of the information processing system, and
• the playback processor utilizes the entity stored in the storage unit, when displaying the page based on the playback data stored outside the information processing system on the display device, using the note application.