Patent ID: 6832731
Filing Date: 2004-12-21
Classification: G06Q,G07F

Abstract:
A memory card comprising:an interface which receives an input content from external equipment and outputs a content to the external equipment; an interface driver which drives the interface; a card interface controller which receives an input signal form the interface driver and outputs a signal to the interface driver; a security processing section controlled by the card interface controller to supply an encryption key to the card interface controller upon a content reproduction request; a memory core interface controlled by the security processing section and the card interface controller and including a binary counter which counts one of the amount of content reproduced and the number of times of content reproduced, in response to a request for reproduction of a content, and a memory core to and from which a content is written, read, and deleted by the memory core interface and which records one of the amount of content reproduced and the number of times of content reproduced, if a request for reproduction of a content is input to the memory core, the memory core outputting the encrypted content to the memory core interface if the reproduction request does not cause one of the amount of possible content reproduction and the number of times of possible content reproduction to be exceeded.