Transport Stream Demultiplexer for Removing Services, Remapping PIDs, and Removing Null Packets

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MPEG-2 Transport Stream DE-Mux and PID Remapper for Removing Services and Null Packets

Home >> DVB ASI and IP Storage, Archiving, Encapsulators, MUX, DEMUX >> Transport Stream De-Multiplexer for Removing PIDS and Null Packets from Complex Streams

DMUX/ASI™

Multichannel PID Service Remapper

PSIP Table Structure

Back Connectors

click to enlarge

DVB Guardian

Front

Mutichannel PID Service Remapper

PSIP tables are the Meta Data (Descriptive Data) inserted into transport streams every 100 ms to enable receivers to understand what is being sent. Some of this meta data must be (mandatory) inserted in the correct location in the stream. The components of the table are generated by the actual MPEG encoder that generated the stream, the traffic system that is feeding the stream with program schedules, and by the organization that is handling the stream. The PSIP tables must comply with the government mandated standards so that all possible receivers can comprehend important details about the particular stream.

Table	Function
MGT (Master Guide Table)	Describes the PSIP tables present
TVCT (Terrestrial Virtual Channel Table)	Lists the virtual channels being sent
STT (System Time Table)	Conveys the current UTC time
EIT (Event Information Table)	Provides basic "EPG" information, including start time, title, and length, The EIT also includes: - AC-3 Audio Descriptor - Caption service descriptor - content ID descriptor - Redistribution control descriptor
RRT (Rating Region Table)	Conveys information on the content advisory rating system in use. (Not required in some areas)
ETT (Extended Text Table)	Provides extended description of PSIP events, i.e. storyline, performers, etc.
Other PSIP Tables of Interest
DCCT (Directed Channel Change Table)	Instructs receivers to change from a given channel to another over a given time period. This change may be unconditional or based on geographic, demographic, or other selection criteria.
DCCSCT (Directed Channel Change Selection Code Table) (Optional)	Provides updates to genre, state, and country codes.

Real Time Transport Stream Demultiplexer (Tuner) for Real Time Forwarding of Selected Programs (PIDs) from Complex Multiprogram MPEG-2 or H.264 Transport Streams. Ideal for Pulling Out Only Selected Programs from Complex Satellite Feeds.

In:

DVB ASI

Out:

DVB ASI

A Real Time MPEG-2 Transport Stream PID Remapper for use at cable head ends to offer different classes of service to different customers. Will remap any PID or set of PIDs from any of 4 multi Program Transport Streams arriving via 4 DVB ASI inputs onto a single DVB ASI output

Standard Features:

Two DVB-ASI inputs
DVB-ASI output
Configurable output rate, including exact ATSC 19.4 Mbps
MPTS in and MPTS or SPTS out
Tested with MPEG-2 or H.264 type streams
SD and HD content
Remote web-based management
Linux® Based
Setup and Forget Technology
Build with Dell or Supermicro workstations

Applications:

Separating multiplexed transport streams
“Cherry picking” channel line ups for satellite, cable, and telco TV system operators
“Content grooming” – Convert SD or HD content into a 19.378 Mbps ATSC compliant stream

Broadcast Engineering Article

SI Table Structure

DVB SI tables are the Meta Data (Descriptive Data) inserted into DVB transport streams every 100 ms to enable receivers to understand what is being sent. Some of this meta data must be (mandatory) inserted in the correct location in the stream. The components of the table are generated by the actual MPEG encoder that generated the stream, the traffic system that is feeding the stream with program schedules, and by the organization that is handling the stream. The SI tables must comply with the accepted standards so that all possible receivers can comprehend important details about the particular stream. Some of the tables include: EIT, NIT, SDT, PAT, TDT, and PMT.

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San Diego, CA 92127
US Phone: (858) 613-1818 Fax: (858) 613-1815