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Method for controlling database copyrights

  • US 7,383,447 B2
  • Filed: 07/25/2005
  • Issued: 06/03/2008
  • Est. Priority Date: 04/01/1994
  • Status: Expired due to Fees
First Claim
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1. A digital data management apparatus, comprising:

  • an input device configured to receive encrypted digital data and a permit key;

    a first means for decrypting the encrypted digital data and for performing a set of functions, wherein the set of functions includes displaying, editing, storing, copying, and transferring said digital data,wherein the first means is configured to authorize a user to display the decrypted digital data in response to the permit key having a value indicating that the user has display authorization,wherein the first means is configured to authorize the user to edit the decrypted digital data in response to the authorize key having a value indicating that the user has edit authorization,wherein the first means is configured to authorize the user to store a re-encrypted version of the decrypted digital data in response to the authorize key having a value indicating that the user has storage authorization,wherein the first means is configured to authorize the user to copy a re-encrypted version of the decrypted digital data in response to the authorize key having a value indicating that the user has copy authorization,wherein the first means is configured to authorize the user to transfer a re-encrypted version of the decrypted digital data in response to the authorize key having a value indicating that the user has transfer authorization.

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