Index card for recording medium casing and recording medium casing

1. An index card comprising:

at least one label portion;

at least one of a contact type or non-contact type integrated circuit (IC) disposed on the at least one label portion, said integrated circuit storing information or processing signals; and

an antenna disposed on the at least one label portion, said antenna connected to the at least one of a contact type or non-contact type IC,

wherein the antenna extends substantially around an entire periphery of the at least one label portion, and

wherein the at least one label portion comprises a main label portion and a back label portion connected to an edge of the main label portion and extending from the edge in a direction substantially perpendicular to the main label portion, and wherein the antenna is positioned in both the main label portion and the back label portion, and

wherein if a media is enclosed within the one label portion as part of a media housing when the media housing is in a closed position, the main label portion is on one side of the media and the back label portion is on another side of the media.

2. An index card comprising:

at least one label portion;

at least one of a contact type or non-contact type integrated circuit (IC) disposed on the at least one label portion, said integrated circuit storing information or processing signals; and

an antenna disposed on the at least one label portion, said antenna connected to the at least one of a contact type or non-contact type IC,

wherein the antenna extends substantially around an entire periphery of the at least one label portion, and

wherein the at least one label portion comprises a main label portion and a back label portion connected to an edge of the main label portion and extending from the edge in a direction substantially perpendicular to the main label portion, and wherein the antenna is positioned only in the back label portion, and

wherein if a media is enclosed within the one label portion as part of a media housing when the media housing is in a closed position, the main label portion is on one side of the media and the back label portion is on another side of the media.

3. The index card as defined in claim 1 , wherein at least one of the contact type and the non-contact type IC and the antenna is coated with a coating layer.

4. The index card as defined in claim 3 , wherein the coating layer is of a writable material.

5. The index card as defined in claim 1 , wherein at least one of the contact type and the non-contact type IC and the antenna is positioned as to not be visible as viewed from outside a casing if the index card is placed in the casing and the casing is closed.

6. An index card as defined in claim 1 , wherein the at least one of a contact type or non-contact type IC is positioned on the outer periphery of the index card.

7. The index card as defined in claim 6 , wherein the IC is positioned in a corner of the index card.

8. The index card as defined in claim 1 , wherein a writable region is a region other than a region of the at least one of a contact type or non-contact type IC.

9. A casing for a recording medium provided with an index card defined in claim 1 .