Invention Grant
- Patent Title: Delivering enhanced multimedia content on physical media
- Patent Title (中): 在物理媒体上提供增强的多媒体内容
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Application No.: US12417783Application Date: 2009-04-03
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Publication No.: US07881476B2Publication Date: 2011-02-01
- Inventor: Jeffrey B. Lotspiech , Florian Pesoni
- Applicant: Jeffrey B. Lotspiech , Florian Pesoni
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Main IPC: H04L9/00
- IPC: H04L9/00

Abstract:
Enhanced multimedia content on physical media interacts with the user through a media player and the Internet. Enhanced multimedia utilizes IDs for pieces of content on the media and a media key block. On the enhanced media is a file with a list of URLs. As the enhanced media plays a section requiring a set of keys for decryption, the media player accesses the URL for that section and obtains the decryption key. The decryption key may be purchased or provided for free. Secure encryption and transmission of these keys is accomplished by broadcast encryption using a media key block. Each media has a unique set of keys that allow the media player to process the media key block; however, each media follows a unique path through the media key block. All legitimate media players obtain the media key; circumvention devices cannot decipher the media key block.
Public/Granted literature
- US20090185688A1 DELIVERING ENHANCED MULTIMEDIA CONTENT ON PHYSICAL MEDIA Public/Granted day:2009-07-23
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