TECHNOLOGIES

To ensure that digital content remains in a safeguarded environment, it must be protected during content delivery, rendering, and storage. 4C Entity has developed technology solutions to provide a comprehensive and renewable method for the protected exchange of content via storage on removable, recordable and pre-recorded media.

The CPRM/CPPM Specification defines a renewable cryptographic method for protecting entertainment content when recorded on physical media. The types of physical media supported include, but are not limited to, recordable DVD media and Flash memory such as Secure Digital (SD) Memory Cards and Secure CompactFlash.

Among the many products that can benefit from CPRM/CPPM support are:

  • PC-based DVD burning and DVD player applications
  • DVD players, including
  • stand-alone players
  • portable DVD players
  • DVD/VCR combinations and
  • in-car entertainment systems

Playback of protected content can be enabled in:

  • portable media players
  • MP3 players
  • cell phones
  • other handheld devices that support SD Flash

The CPRM/CPPM technology solution provides a single, renewable, standards-based content protection scheme that can support applications and devices manufactured by an ecosystem of different vendors. Unlike proprietary, vertical content protection standards, CPRM/CPPM will allow a wide variety of content from different sources to be securely stored and subsequently rendered on a range of digital devices from different manufacturers. This allows the ecosystem to support one horizontal content protection scheme instead of numerous vertical, proprietary schemes, thus lowering requirements and cost.

Click here to download "How CPRM/CPPM Works".

Click here to download "CPRM and CPXM: Enabling New Business Models for Robust Delivery of Premium Digital Content".

4C ENTITY

4C Entity has developed a solution: Content Protection for Recordable Media (CPRM) and Content Protection for Pre-recorded Media (CPPM). The CPRM/CPPM specification defines a renewable cryptographic method for protecting entertainment content when recorded on removable and portable physical media including, but not limited to, DVD media and Flash memory.

The CPRM/CPPM specification was designed to meet the robustness and renewability requirements of content owners while balancing the implementation needs of both the consumer electronics and PC industries. Multimedia applications enabled by 4C technologies are creating vast new market opportunities for content providers, service providers, application developers and device manufacturers. By using 4C Entity technology solutions and specifications, device manufacturers can offer consumers a wide range of choice for sharing premium content among digital devices while reducing long development times and resources.

Download the Specifications

CPRM/CPPM Specification
The CPRM/CPPM Specification defines a renewable cryptographic method for protecting entertainment content when recorded on physical media.

4C/Verance Watermark
CPPM adopters are required to build the Verance watermark detector into their products. The CPPM license allows content participants to embed the Verance watermark if they choose. The SDMI Phase I or DVD Audio Watermark Technology License Procedure is available online in the Licensing Area of the Web site.

4C 12 BIT Watermark Specification
This specification covers the format configuration, timing, and other details--including the basic detector function--of the 4C 12 Bit Watermark. It conveys Copy Control Information (CCI) ad other important data.

Developer Resources
This section links to a wide range of related materials available online and includes 4C Entity documents available for download.

Prior News and Announcements
Archived of news and information about revisions to 4C specifications and license