DigiCAP provides DMB Scrambler which is Stand-Alone Scrambler defined in DAB CA standard. DigiCAP DMB
Scrambler is a product for encrypting digital broadcasting content (Video/Audio/Data) to protect and manage the
interest of DMB service providers as well as the rights of consumers.

DigiCAP DMB Scrambler scrambles/encrypts broadcasting contents received from encoder. On processing, it
receives ECM (Entitlement Control Message) and EMM (Entitlement Management Message) from CAS (Conditional
Access System) and provides support in transmitting them with broadcasting content. DigiCAP Scrambler
includes function of SCS (SimulCrypt Synchronizer), CWG (CW Generator) and Scrambler that defined as Headend
components in DVB SimulCrypt standard. It provides part of Mux function for the integration between CAS
and EMMG.

Main Features

• Easy portability which enables to support multi CAS in compliance with SimulCrypt standard.
• Customizing scrambler with different service types
  

  Service Type		MPEG-2 TS Scrambler	Sub-channel CA Scrambler	MOT CA Scrambler
  Video		O	O
  Audio	DAB Transport		O
  	MPEG-2 Transport	O	O
  Data	DAB Transport		O	O
  	MPEG-2 Transport	O	O

• Stream error correction during the input-output process of Video/Audio/Data

  MPEG-2 TS Scrambler	MPEG-2 TS Packet Level Scrambling & Reed-Solomon (204, 188) Coding support Factum Encapsulation Protocol(FEP) support
  SubCh CA/ MOT CA Scrambler	Factum Encapsulation Protocol(FEP) support

• Processing overhead reduction of device descrambling with full and partial scrambling
  - Full scrambling that encrypts all of individual MPEG-2 TS stream and partial scrambling function that transmits partially scrambled TS of MPEG-2 TS stream
  - Partial scrambling helps to reduce processing overhead of descrambling by setting up the scrambling range from 1 to 50% by operators
• Provides Bypass Mode and CA Mode Transition function
• Enables to set up broadcast schedule through Scrambling Control Group (SCG) on CA Mode
  - Broadcast schedule based on specific period of time or specific group of people, it could be on hourly, daily, weekly basis
• Remote configuration & monitoring through System Configuration Manager GUI Program (Windows)

Main Function
There are 3 options in DigiCAP DRM Scrambler:
MPEG-2 TS Scrambler, Sub-channel CA Scrambler, MOT CA Scrambler

Specification

Product Specification

Support for DigiCAP DMB Scrambler

• ETSI TS 103 197 over V1.3.1, DVB SimulCrypt
• ETSI TS 102 367 over V1.2.1, Conditional Access