Media/data card
First Claim
1. A computer readable medium comprising a medium readable by a computer having a data structure stored thereon for controlling access to data files stored on the computer readable medium, the data structure having:
- a media storage substructure storing a plurality of data files;
a file system directory substructure including a list of locations of the data files stored in the media storage substructure; and
, a security substructure prescribing allowed access to the data files stored in the media storage substructure.
1 Assignment
0 Petitions
Accused Products
Abstract
The media/data card is a computer readable medium for storing data files, and in particular, media files. The device may be a flash media memory card or other conveniently sized, portable storage device. The media/data card stores a data structure for controlling access to data files stored on the computer readable medium. The data structure includes a media storage substructure for storing the data files, a file system directory substructure containing the locations of the data files stored in the media storage substructure; and a security substructure for describing allowed access to the data files stored in the media storage substructure. The data files may be multimedia files, such as compressed audio or video files. The data files may be encrypted to provide enhanced security.
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Citations
20 Claims
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1. A computer readable medium comprising a medium readable by a computer having a data structure stored thereon for controlling access to data files stored on the computer readable medium, the data structure having:
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a media storage substructure storing a plurality of data files;
a file system directory substructure including a list of locations of the data files stored in the media storage substructure; and
,a security substructure prescribing allowed access to the data files stored in the media storage substructure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for providing secure access to media files stored on a computer readable medium, comprising the steps of:
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reading a security data structure stored on the computer readable medium;
retrieving a user identifier associated with a user requesting access to the media files;
comparing information read from the security data structure with the user identifier;
determining an access level for the user based on the comparison; and
determining whether an access requested by the user is authorized based upon the access level determined for the user. - View Dependent Claims (10, 11)
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12. A media/data card, comprising:
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a card having a computer readable medium disposed thereon;
an area of memory disposed in the computer readable medium dimensioned and configured for storing a plurality of multimedia files thereon;
a data structure disposed in the computer readable medium having a plurality of substructures, including substructures for storing data relating to identification of the multimedia files and file types, a user identifier, and file access levels authorized by copyright holders of the multimedia files according to the user identifier; and
means for universally connecting the card to ports of portable computing devices for playback of the multimedia files stored on the computer readable medium. - View Dependent Claims (13, 14, 15, 16)
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17. A method for writing a collection of data files to a computer readable medium, comprising the steps of:
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identifying at least one data file to form a collection;
retrieving the at least one data file;
writing the at least one data file to a media storage substructure of the computer readable medium;
writing locations associated with the at least one data file to a file system directory substructure on the computer readable medium; and
writing a user identifier into a security substructure on the computer readable medium, wherein the security substructure precludes subsequent access to the media storage substructure when the user identifier is not furnished. - View Dependent Claims (18, 19, 20)
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Specification