Method and apparatus for playing back content based on digital rights management between portable storage and device, and portable storage for the same
First Claim
1. A method of playing back content using a portable storage, the method comprising:
- requesting the portable storage to transmit a right to play back content protected through digital rights management (DRM);
receiving the right to play back the content protected through DRM from the portable storage; and
informing the portable storage of completion of a playback of the content protected through DRM using the right when the playback is completed.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of playing back content based on digital rights management (DRM) between a portable storage and a device and a portable storage for the same are provided. The method of playing back content using a portable storage includes requesting the portable storage to transmit a right to play back content protected through digital rights management (DRM), receiving the right to play back the content protected through DRM from the portable storage, and informing the portable storage of completion of the playback when a playback of the content protected through DRM using the right is completed.
51 Citations
29 Claims
-
1. A method of playing back content using a portable storage, the method comprising:
-
requesting the portable storage to transmit a right to play back content protected through digital rights management (DRM);
receiving the right to play back the content protected through DRM from the portable storage; and
informing the portable storage of completion of a playback of the content protected through DRM using the right when the playback is completed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of sending a right to play back content to a device, the method comprising:
-
receiving a request to transmit the right to play back the content protected through digital rights management (DRM) from the device;
transmitting the right to play back the content protected through DRM to the device in response to the request; and
receiving a command to update a rights object for the content protected through DRM. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. A portable storage comprising:
-
an interface module which connects to a device;
a rights object storage module which stores at least one encrypted rights object;
an encryption module which generates a session key and performs symmetric-key encryption and public-key encryption; and
a digital rights management (DRM) agent module which performs DRM operations, wherein the DRM agent module finds a rights object for content among rights objects stored in the rights object storage module upon receiving a request to transmit a right to play back the content from the device through the interface module, encrypts information needed to play back the content among information comprised in the rights object using the encryption module, and sends the encrypted information to the device through the interface module. - View Dependent Claims (25)
-
-
26. An apparatus for playing back content using a portable storage, the apparatus comprising:
-
an interface module which connects to the portable storage;
a content storage module which stores content protected through digital rights management (DRM);
an encryption module which generates a session key and performs symmetric-key enctyption and public-key encryption; and
a DRM agent module which performs DRM operations, wherein the DRM agent module requests a right to play back the content that is protected through DRM and stored in the content storage module from the portable storage via the interface module, receives an encrypted right to play back the content from the portable storage, decrypts the encrypted right to play back the content using the encryption module, and obtains a content encryption key. - View Dependent Claims (27)
-
-
28. A recording medium having a computer readable program recorded therein, the program for executing a method of playing back content using a portable storage, the method comprising:
-
requesting the portable storage to transmit a right to play back content protected through digital rights management (DRM);
receiving the right to play back the content protected through DRM from the portable storage; and
informing the portable storage of completion of a playback of the content protected through DRM using the right when the playback is completed.
-
-
29. A recording medium having a computer readable program recorded therein, the program for executing a method of sending a right to play back content to a device, the method comprising:
-
receiving a request to transmit the right to play back the content protected through digital rights management (DRM) from the device;
transmitting the right to play back the content protected through DRM to the device in response to the request; and
receiving a command to update a rights object for the content protected through DRM.
-
Specification