CI Plus

 

CI Plus Module 

CI Plus (CI+) is a technical specification that is an extension to the proven DVB common interface standard (DVB-CI.) The CI Plus forum finalised the specification in June 2008, which allows for the secure delivery of pay-TV services to CI-Plus compatible CE devices such as set-top boxes and integrated Digital TVs (iDTVs.)

CI Plus Module Version 1.3.1

Version 1.3.1 of CI Plus module has been mandated for all new host verification since August 2012. This version has added several key feature enhancements, including: 

  • Playback Control License - enhances the URI to allow extended functions on time limited content storage for 'Copy Never' content.
  • Digital Only Token - enables future use of premium PPV services, by enabling certain content to be output over ONLY digital interfaces.
  • Operator Profile - enable signalling from CAM to Host to allow operator features, such as bouquet signalling. 
  • "Low-speed" communication channel - clearly specifies a minimum capability of an IP communication resource in the Host.

In addition, the PVR resource (v1.2 of the specification) has been removed; this is because it proved impossible to find a common mechanism of enabling CAS encrypted recording suitable for all common use CAS in Europe at least. 

Ocean Blue has implemented the necessary changes to support this standard with many of our customers having passed accreditation by the end of 2012. The modifications affect the Ocean Blue CI Plus, CI+ browser (available as a platform agnostic, stand alone module) and the Sunrise DVB (which can be supplied with the fully integrated CI Plus stack and CI+ browser.) 

The Components

CI Plus Module: 

Ocean Blue's 'CI+ Content Control' system introduces a secure link between the Common Interface Conditional Access Module (CICAM) and Host, enabling high value content to be encrypted. It provides additional security, a browser and copy protection. The CI specification interconnects a CAM and digital TV receiver (the "Host") so that any encryption system can be used in the receiver. CI+ strengthens the original specification to combat piracy and enforce a relationship of trust between the host and the smartcard. 

CI+ Browser:

Ocean Blue can also supply the Voyager MHEG-5 CI+ browser for host machines, including set-top boxes and televisions. 

CI Plus Architecture

Figure 1: CI+ Architecture Diagram

Conditional Access and DVB Common Interface:

Our entire DVB-based products fully support smartcard conditional access (DVB-CA) systems and DVB Common Interface (DVB-CI) for PPV functionality. Our CI Plus module can be supplied either on its own or fully integrated with our Sunrise DVB