Data transmitting system and method, drive unit, access method, data recording medium, recording medium producing apparatus and method
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Accused Products
Abstract
A security module is provided in a data recording medium, data to be written to the data recording medium is encrypted with an content key different from one data to another, and the content key is safely stored in the security module. Also, the security module makes a mutual authentication using the public-key encryption technology with a drive unit to check that the counterpart is an authorized (licensed) unit, and then gives the content key to the counterpart, thereby preventing data from being leaked to any illegal (unlicensed) unit. Thus, it is possible to prevent copyrighted data such as movie, music, etc. from being copied illegally (against the wish of the copyrighter of the data).
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Citations
200 Claims
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1-137. -137. (canceled)
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138. A storage apparatus for storing information retrieved by an information processing apparatus, the storage apparatus comprising:
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a storage section for storing a first revoked unit list;
a receiving section for receiving a second revoked unit list from the information processing apparatus; and
a judging section for judging whether the information processing apparatus is revoked or not based on the first revoked unit list;
wherein if the information processing apparatus is revoked, the first revoked unit list is maintained, and if the information processing apparatus is not revoked, the first revoked unit list is replaced with the second revoked unit list. - View Dependent Claims (139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152)
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153. An information processing apparatus for retrieving information from a storage apparatus, comprising:
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a storage section for storing a second revoked unit list;
a receiving section for receiving a first revoked unit list from the storage apparatus; and
a judging section for judging whether the storage apparatus is revoked or not based on the second revoked unit list;
wherein if the storage apparatus is revoked, the second revoked unit list is maintained, and if the storage apparatus is not revoked, the second revoked unit list is replaced with the first revoked unit list. - View Dependent Claims (154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168)
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169. A system comprising an information processing apparatus and a storage apparatus, the information processing apparatus comprising:
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a storage section for storing a second revoked unit list;
a receiving section for receiving a first revoked unit list from the storage apparatus; and
a judging section for judging whether the storage apparatus is revoked or not based on the second revoked unit list;
wherein if the storage apparatus is revoked, the second revoked unit list is maintained in the information processing apparatus, and if the storage apparatus is not revoked, the second revoked unit list is replaced with the first revoked unit list in the information processing apparatus; and
the storage apparatus comprising;
a storage section for storing the first revoked unit list;
a receiving section for receiving the second revoked unit list from the information processing apparatus; and
a judging section for judging whether the information processing apparatus is revoked or not based on the first revoked unit list;
wherein if the information processing apparatus is revoked, the first revoked unit list is maintained in the storage apparatus, and if the information processing apparatus is not revoked, the first revoked unit list is replaced with the second revoked unit list in the storage apparatus. - View Dependent Claims (170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184)
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185. A method for retrieving information from a storage apparatus, comprising:
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storing a second revoked unit list;
receiving a first revoked unit list from the storage apparatus; and
judging whether the storage apparatus is revoked or not based on the second revoked unit list;
wherein if the storage apparatus is revoked, the second revoked unit list is maintained, and if the storage apparatus is not revoked, the second revoked unit list is replaced with the first revoked unit list. - View Dependent Claims (186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200)
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Specification