TranShare™ is a new copyright protection management mechanism using the SD memory card, enabling the user to back up, restore and play back protected digital content across various devices.

• Supports digital music and video content requiring copyright protection management.
• Complies with the SD-SD (Secure Digital Separate Delivery) specifications from the SD Card Association.
• Secures keys in an SD memory card by using the Content Protection for Recordable Media (CPRM) technology.
• Allows a backup (copy) of encrypted content to be created in any storage devices.
• Allows the user to specify usage rules, such as the number of times content can be played back and key expiry dates.

   * : Secure Digital Separate Delivery
      (Specifcation from the SD Card Association)

In the conventional SD memory card implementation, encrypted content and the keys that release it must reside in the same SD memory card. The SD-SD specifications allow encrypted content to reside separately from the keys by adding another step to the encryption process in the user area of the SD memory card.

The basic concept of the TranShare™ system is to use an SD memory card as storage of content keys, separating encrypted content from the keys that release it. In this way, encrypted content can be distributed across various devices, which can then be played back by inserting an SD memory card containing the valid keys.

You can view a video presentation of TranShare™ introducing the system overview and application examples.