Method for controlling database copyrights
4 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides a method for controlling copyrights of digital data in a database system including real time transmission of a digital picture. Copyrights are controlled using one or more of the following, as necessary, in addition to a permit key: a copyright control program, copyright information or copyright control message. The copyright control program, the copyright information and the copyright control message are supplied together with the permit key, or they are supplied together with the data. Otherwise, a part of them is supplied together with the permit key and the other part of them is supplied together with the data. The data, the permit key, the copyright control message, the copyright information and the copyright control program are (1) transmitted while encrypted, but are decrypted when used, or (2) they are transmitted while encrypted and decrypted for display only, otherwise remaining encrypted, or (3) they may not be encrypted at all.
121 Citations
89 Claims
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1-50. -50. (canceled)
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51. A digital data management apparatus, comprising:
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means for encrypting digital data to produce encrypted digital data supplied to a user;
means for using a utilization permit key pre-defined to permit at least one of displaying, editing, storing, copying, and transferring of said digital data;
means for decrypting said encrypted digital data to decrypted digital data by using a display permit key, which is said utilization permit key permitting displaying of said digital data, and displaying said decrypted digital data;
means for decrypting said encrypted digital data to decrypted digital data by using an edit permit key, which is said utilization permit key permitting editing of said digital data, and editing said decrypted digital data;
means for decrypting said encrypted digital data to decrypted digital data by using a storage permit key, which is said utilization permit key permitting storing of said digital data, encrypting again said decrypted digital data to encrypted digital data by using said storage permit key, and storing said encrypted digital data;
means for decrypting said encrypted digital data to decrypted digital data by using a copy permit key, which is said utilization permit key permitting copying of said digital data, encrypting again said decrypted digital data to encrypted digital data by using said copy permit key, and copying said encrypted digital data; and
means for decrypting said encrypted digital data to decrypted digital data by using a transfer permit key, which is said utilization permit key permitting transferring of said digital data, encrypting again said decrypted digital data to encrypted digital data by using said transfer permit key, and transferring said encrypted digital data. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59)
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60. A digital data management method, comprising:
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encrypting digital data to produce encrypted digital data supplied to a user; and
using a utilization permit key on said encrypting digital data, said utilization permit key pre-defined to include at least two of;
a display permit key adapted to permit displaying of said digital data, an edit permit key adapted to permit editing of said digital data, a storage permit key adapted to permit storing of said digital data, a copy permit key adapted to permit copying of said digital data, and a transfer permit key adapted to permit transferring of said digital data. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68)
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69. A digital data management method, comprising:
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encrypting digital data to produce encrypted digital data supplied to a user;
using a utilization permit key on said encrypting digital data, said utilization permit key pre-defined to include a first permit key and a second permit key;
said first permit key pre-defined to permit at least one function of displaying, editing, storing, copying, and transferring of said digital data; and
said second permit key pre-defined to permit at least one function of displaying, editing, storing, copying, and transferring of said digital data, wherein at least one function of the second permit key is different than at least one function of the first permit key. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76, 77)
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78. A digital data management method, comprising:
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encrypting digital data to produce encrypted digital data supplied to a user;
using a utilization permit key on said encrypting digital data, said utilization permit key pre-defined to permit at least one of displaying, editing, storing, copying, and transferring of said digital data; and
wherein copyright information must be present in said digital data in order to use said digital data. - View Dependent Claims (79, 80, 81, 82, 83, 84)
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85. A digital data management method, comprising:
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encrypting digital data to produce encrypted digital data supplied to a user;
using a utilization permit key on said encrypting digital data, said utilization permit key pre-defined to permit at least one of displaying, editing, storing, copying, and transferring of said digital data; and
using a copyright management program for managing utilization of said digital data, wherein said copyright management program is included in said utilization permit key. - View Dependent Claims (86, 87, 88, 89)
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Specification