Terminal apparatus and method for playing multimedia content encrypted based on DRM

Patent metadata

Field	Value
Publication number	US-9298892-B2
Application number	US-201414265563-A
Country	US
Kind code	B2
Filing date	Apr 30, 2014
Priority date	Apr 30, 2013
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A method for playing multimedia content encrypted based on digital rights management (DRM) by a terminal apparatus having a web server module unit, the method comprising: receiving a request for playing the multimedia content encrypted based on DRM; converting a local file path via which the multimedia content encrypted based on DRM corresponding to the received play request is stored into a web server URL path for the web server module unit; providing the web server URL path to a multimedia device player for playing the multimedia content encrypted based on DRM; when the multimedia device player accesses the web server module unit by using the web server URL path, checking whether there is a session being connected to the web server URL; and controlling whether to decode the multimedia content encrypted based on DRM depending on the checking results.

First claim

What is claimed is:

1. A method for playing multimedia content encrypted based on digital rights management (DRM), the method performed by a terminal apparatus comprising a multimedia device player unit and a DRM decoding unit, the DRM decoding unit comprising a web server module unit, the method comprising:
receiving, by the terminal apparatus, a request for playing the multimedia content encrypted based on DRM;
converting, by the terminal apparatus, a local file path via which the multimedia content encrypted based on DRM corresponding to the received play request is stored into a web server URL path for the web server module unit;
providing, by the terminal apparatus, the web server URL path to a multimedia device player for playing the multimedia content encrypted based on DRM;
when the multimedia device player accesses the web server module unit by using the web server URL path, checking, by the terminal apparatus, whether there is a session being connected to the web server URL; and
controlling, by the terminal apparatus, whether to decode the multimedia content encrypted based on DRM depending on the checking results,
wherein said controlling whether to decode includes:
when there is no session being connected to the web server URL, decoding the multimedia content encrypted based on DRM, and
when there is a session being connected to the web server URL, performing no decoding on the multimedia content encrypted based on DRM,
wherein said decoding the multimedia content encrypted based on DRM includes:
converting reversely, by the terminal apparatus, the web server URL path into a local file path of the multimedia content encrypted based on DRM; and
reading the multimedia content encrypted based on DRM using the reversely converted local file path,
wherein when performing the decoding, decoding, by the terminal apparatus, the multimedia content encrypted based on DRM by using a license for the multimedia content encrypted based on DRM; and

providing, by the terminal apparatus, the decoded multimedia content to the multimedia device player.

2. The method of claim 1 , further comprising:
if there is no session being connected to the web server URL, storing, by the terminal apparatus, session information between the multimedia device player and the web server module unit.

3. A terminal apparatus for playing multimedia content encrypted based on digital rights management (DRM), comprising:
a local file memory;
a DRM decoding unit comprising a web server module unit and a resource manager unit converting, upon receipt of a request for playing the multimedia content encrypted based on DRM stored in the local file memory, a local file path via which the multimedia content encrypted based on DRM corresponding to the received play request is stored into a web server URL path for the web server module unit; and
a multimedia device player unit accessing the web server module unit by using the web server URL path for playing the multimedia content encrypted based on DRM,
wherein when the multimedia device player accesses the web server module unit by using the web server URL path, and the web server module unit checks whether there is a session being connected to the web server URL,
wherein the DRM decoding unit further comprises a decoding module unit that decodes the multimedia content encrypted based on DRM when there is no session being connected to the web server URL, and not to decode the multimedia content encrypted based on DRM when there is a session being connected to the web server URL,
wherein when the decoding module unit decodes the multimedia content encrypted based on DRM, the web server module unit converts reversely the web server URL path into a local file path of the multimedia content encrypted based on DRM and reads the multimedia content encrypted based on DRM using the reversely converted local file path,
wherein, when performing the decoding, the decoding module unit to decodes the multimedia content encrypted based on DRM by using a license for the multimedia content encrypted based on DRM, and provides the decoded multimedia content to the multimedia device player.

4. The terminal apparatus of claim 3 , wherein if there is no session being connected to the web server URL, the web server module unit stores session information between the multimedia device player and the web server module unit.

Assignees

• Intellectual Discovery Co Ltd
• Inka Entworks Inc

Inventors

• Park Jin Yong
• Hong Junho

Classifications

• G06F21/10 Primary

  Protecting distributed programs or content, e.g. vending or licensing of copyrighted material (protection in video systems or pay television H04N7/16) {; Digital rights management [DRM]} · CPC title

• G06F21/105

  Arrangements for software license management or administration, e.g. for managing licenses at corporate level · CPC title

• G11B20/10 Primary

  Digital recording or reproducing · CPC title

• G06F21/602

  Providing cryptographic facilities or services · CPC title