Digital content management device and digital content management program
First Claim
1. A digital content management device, comprising:
- a first storing unit operable to store digital content and first management information for the digital content;
a second storingunit operable to storesecond management information for the digital content;
amanagement information judging unit operable to judge, before the digital content is used, whether the digital content is permitted to be used or not, by comparing the first management information with the second management information; and
a management information updating unit operable to update the first management information and the second management information, when a judgment result by the management information is affirmative and the digital content is used.
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Accused Products
Abstract
When digital content is recorded, identification information for the digital content and a random number are recorded on each of a nonvolatile memory and an internal HDD. When the digital content is moved from the internal HDD to another recording medium, the random number recorded in the nonvolatile memory and the random number recorded on the internal HDD are compared to see if theymatch. Also, an offset value that indicates a location of a previous end-point at which the digital content has been ended to be read is read from the internal HDD, and the read offset value is compared with a location of a start-point at which the digital content is started to be read. If the random numbers match and the location of the start-point is greater than the offset value, the digital content is permitted to be moved.
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Citations
24 Claims
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1. A digital content management device, comprising:
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a first storing unit operable to store digital content and first management information for the digital content;
a second storingunit operable to storesecond management information for the digital content;
amanagement information judging unit operable to judge, before the digital content is used, whether the digital content is permitted to be used or not, by comparing the first management information with the second management information; and
a management information updating unit operable to update the first management information and the second management information, when a judgment result by the management information is affirmative and the digital content is used. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A digital content management program, comprising:
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a first storing step of storing digital content and first management information for the digital content;
a second storing step of storing second management information for the digital content;
a management information updating step of updating the first management information stored in the first storing step and the second management information stored in the second storing step, when the digital content is used; and
a management information judging step of judging whether the digital content is permitted to be used or not, by comparing the first management information stored in the first storing step with the second management information stored in the second storing step. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification