Panasonic Corporation

Yuta Kiyosawa

Taiji Sasaki

Futoshi Nakabe

Tomohiro Matsumoto

Mami Kuramitsu

Yasuyuki Matsuura

Provided is a playback device which is capable of correctly determining a construction status of a virtual package. An access is attempted to a state signaling file recorded in a local storage using a fixed address on a virtual file system assigned by merge management information (step S). The virtual package construction status is determined according to failure or success of the attempted access.

Reproducer, integrated circuit, reproduction method, application program, recording medium, recorder, and recording method

A method of moving a rights object according to the present invention includes the following steps. First, a rights object in the memory card is disabled. Then, the rights object is copied from the memory card in response to a retrieval request and installed to a content player. After the installation, a removal request is transmitted to the memory card and the rights object in the memory card is removed (deleted). After transmitting the removal request, second state information is generated and held in the content player to indicate that the removal of the rights object in the memory card has not yet been completed and that the rights object installed in the content player is conditionally enabled. When the memory card receives the removal request, the memory card removes the rights object from the memory card and transmits a removal response for notifying completion of the removal to the content player.

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Osaka, Japan

Yuta Kiyosawa