8-channel Scrambler with Multiplexer COD982ASI

COD982ASI multiplexer is a multifunctional digital TV service server: eight ASI input DVB remultiplexer with embeded DVB Scrambler and CAS Crypton SMS generator for Pay TV. The device is mainly intended for operation in digital broadcasting DVB networks and can perform the following functions:

• DVB remultiplexer
• DVB scrambler and CAS Crypton service information generator
• NIT, EPG injector

Reliable and user-friendly software allows you to quickly master the technology of digital television broadcasting and build your network, taking into account the peculiarities of your business.

Features

• Eight ASI inputs: The transport streams coming from different sources (for example, from professional digital receivers with ASI outputs) are received to 8 ASI inputs. There are up to 24 programs which can be selected from the inputs. After being multiplexed the programs are arriving to the video scrambler and then to the device ASI output.
• Higher-priority multiplexing. Flexible channel settings let you employ your frequency resource more efficiently. Higher priority and rating can be assigned to the dynamic picture programs thus providing their passing the channel with a maximum quality.
• Analysis of the input stream. With the help of the "Crypton Software Suite" software package, each of the 8 input streams can be analyzed to determine the presence of certain services and hidden data transmission channels in it (i.e. those PIDs that are not referenced in the service tables). The speed of these streams can also be calculated. In addition, for each service, you can calculate the average bit rate of the transport stream for any arbitrary time interval.
• Quality analyzer of multiplexing. To use the channel capacity more efficiently many digital TV-programs are broadcasted with a variable stream rate presenting some difficulties for cable operators while remultiplexing these programs. The quality analyzer of multiplexing estimates a proper generation of a new multiprogram transport stream by gathering information of exceeding allowable transmission channel bit rate for a selected time span.
• Service information editing. To achieve extra flexibility when generating a new multiprogram transport stream the service information editing function is envisaged in COD982ASI.
• DVB NIT/EPG support. COD982ASI can support DVB NIT/EPG. NIT/EPG subsystem fully corresponds to DVB specifications and can be received by any subscriber receivers supporting the functionality.
• Conditional Access System. DVB scrambler and CAS Crypton SMS generator let you employ COD982ASI for providing conditional access in digital TV broadcasting network. It is essential to mention that high-reliable CA operation is achieved due to a simultaneous CAS Crypton SMS generator is embedded into each device and only periodic host PC intrusion is required to update subscriber information or EPG data. Up to 24 programs can be arranged into 8 scrambling groups each having its independent scrambling key and list of subscribers who are allowed to preview the program at the present time.
• High performance 100Mbit/s TCP/IP port. Designed mainly for high-speed subscriber transmission, in the CAS Crypton encoder mode, information and NIT/EPG data. In IP encapsulator mode, the port is used to transmit video/audio streams or the Internet.
• Up to 24 digital TV and radio programs. The input stream can consist of 24 programs that can be processed in accordance with a particular problem being solved. To preserve the quality characteristics of the input stream in the output stream, the device provides PCR correction.
• Up to 8 service groups. 24 television programs arriving at the input of the device can be organized into 8 servo coding groups, each of which has its own independent scrambling key and a list of subscribers who are allowed to view at the current time.
• ASI output. COD982ASI DVB ASI output supports «bite/packet», «188/204 byte» operation modes according to EN50083-9.
• TCP/IP control. All Crypton devices are controlled via TCP/IP network with software package “Crypton Software Suite” installed on a host PC.
• Reloadable Software. Address Device Firmware update can be made with a special FW update module of “DTV Master”, the basic control program of “Crypton Software Suite”.

Brief description of the main blocks

• ASI INPUT I/F. DVB ASI interface is used as an input and output interface of digital transport stream transmission according to EN 50083-9. All basic modes are supported: «byte/packet», «188/204 byte». The source mode is determined automatically by ASI inputs.
• DVB MULTIPLEXER. Up to 24 programs, from up to 8 MPTS streams that come from ASI inputs, can be selected for the new multiplex. Program priority assignment system allows high priority services to be multiplexed without any data loss when under some circumstance (sudden bitrate increase at high priority programs) low priority program are allowed to slightly lose in quality. Service information editing is also supported on COD982ASI according to EN300468.
• DVB SCRAMBLER. The scrambler used in COD982ASI is a DVB-compatible in accordance with DVB-CAS (ETR-289). DVB services can be scrambled selectively and belong to any one of up to 8 scrambling groups that can be arranged on a single device. Maximum 24 programs can be individually scrambled on each of the devices.
• CAS CRYPTON SMS GENERATOR. CAS Crypton SMS messages are generated locally from the subscriber lists (lists of subscribers who are permitted to watch the program) for each of up to 8 scrambling groups assigned to each of the devices in your network.
• Device control. The device control module is used for managing COD982ASI by the aid of “Crypton Software Suite” installed on a host PC of a network operator.