초록 ▼

A time limiting function is incorporated in an information carrying medium such as IC card to check whether the current time traced constantly reaches a preset limit time. When the current time reaches the limit time, information to be protected and stored in a memory is erased. For convenience of t

A time limiting function is incorporated in an information carrying medium such as IC card to check whether the current time traced constantly reaches a preset limit time. When the current time reaches the limit time, information to be protected and stored in a memory is erased. For convenience of the user possessing the information carry medium, a card holder is provided which can be connected to the information carrying medium to stop the time limiting function.

대표청구항 ▼

An information carrying medium, comprising: storage means for pre-storing information to be protected; timer means for constantly keeping the time lapse after activation thereof in terms of the current time; control means for examining whether said current time reaches a limit time for erasing the i

An information carrying medium, comprising: storage means for pre-storing information to be protected; timer means for constantly keeping the time lapse after activation thereof in terms of the current time; control means for examining whether said current time reaches a limit time for erasing the information to be protected, when said current time reaches said limit time; and power supply means for supplying electric power to said storage means, said timer means and said control means.