Recording device
First Claim
1. A recording device detachably attachable to a reproduction apparatus reproducing and outputting encrypted content data, for receiving and recording said encrypted content data therein, comprising:
- a data input/output unit allowing external data communication;
a first storage unit receiving said encrypted content data from said data input/output unit for storage;
a user information hold unit holding first user ID data provided to identify a user of said recording device;
a protection information memory unit holding protection information updatable in response to a result of comparing externally provided user information with said first user ID data, as externally instructed; and
a control unit controlling an operation of said recording device, said control unit referring to said protection information to restrict external access to said encrypted content data held in said first storage unit.
2 Assignments
0 Petitions
Accused Products
Abstract
A memory card includes a user ID hold unit holding user ID data provided to identify the user of the memory card, a first protection information memory unit holding first protection information restricting access to memory card, and a second protection information memory unit holding second protection information restricting access for each content data. Memory card refers to the user ID data to identify the user of the reproduction apparatus of interest and prohibits any unauthorized user from changing first and second protection information.
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Citations
18 Claims
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1. A recording device detachably attachable to a reproduction apparatus reproducing and outputting encrypted content data, for receiving and recording said encrypted content data therein, comprising:
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a data input/output unit allowing external data communication; a first storage unit receiving said encrypted content data from said data input/output unit for storage; a user information hold unit holding first user ID data provided to identify a user of said recording device; a protection information memory unit holding protection information updatable in response to a result of comparing externally provided user information with said first user ID data, as externally instructed; and a control unit controlling an operation of said recording device, said control unit referring to said protection information to restrict external access to said encrypted content data held in said first storage unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification