Electronic guide information processing system, information distributing apparatus, portable terminal apparatus, and method for processing electronic guide information

An electronic guide information processing system for processing guide information about a place, the system comprising:

• an information providing apparatus for converting the guide information into electronic guide information, encrypting the electronic guide information, and providing the encrypted electronic guide information;
• a portable terminal apparatus for recording the encrypted electronic guide information, decrypting the encrypted electronic guide information, and presenting the electronic guide information, which has been provided from the information providing apparatus;
• and
• an information processing apparatus for erasing the electronic guide information from the portable terminal apparatus and writing information about the place in the portable terminal apparatus at the same area;
• and
• wherein reading of the electronic guide information is permitted inside the place, while reading of the electronic guide information is inhibited outside the place.

A portable terminal apparatus for obtaining and processing electronic guide information about a place, the portable terminal apparatus comprising:

• a manipulating section manipulated in order to input manipulation information about the electronic guide information;
• a receiving section for receiving encrypted electronic guide information;
• a storing apparatus for storing the encrypted electronic guide information received by the receiving section;
• a decrypting section for decrypting the encrypted electronic guide information;
• and
• a controlling apparatus for reading the electronic guide information from the storing apparatus in accordance with the manipulation information from the manipulating section and processing the electronic guide information to control an image display,
• wherein the controlling apparatus erases the electronic guide information from the storing apparatus and writes in the storing apparatus information about the place at the same area.

A method for processing electronic guide information which electronically processes guide information about a place, the method comprising:

• producing electronic guide information at an information provider side by converting the guide information;
• encrypting the electronic guide information at the information provider side;
• distributing the encrypted electronic guide information to a portable terminal apparatus;
• obtaining the distributed encrypted electronic guide information;
• decrypting the encrypted electronic guide information;
• presenting the electronic guide information;
• erasing the electronic guide information from the portable terminal apparatus;
• and
• writing in the portable terminal apparatus information about the place,
• wherein the erasing and the writing are performed at the same area.

A method for processing electronic guide information about a place, the method comprising:

• receiving the encrypted electronic guide information to a portable terminal apparatus;
• decrypting the encrypted electronic guide information in the portable terminal apparatus;
• erasing the electronic guide information from the portable terminal apparatus;
• and
• writing in the portable terminal apparatus information about the place,
• wherein the erasing and the writing are performed at the same area.