MOTOROLA TMX-2010 User Manual

TMX-2010

Transport Multiplexer

ATSC Application Note

March 2003

TMX-2010 TRANSPORT MULTIPLEXER

ATSC Application Note

TABLE OF CONTENTS
1	INTRODUCTION......................................................................................................	3
2	TMX-2010 MULTIPLEXER ......................................................................................	5
3	SE-2000 SINGLE CHANNEL ENCODER................................................................	8
4	HIGH DEFINITION ENCODER ................................................................................	9
5	ATSC ARCHITECTURES......................................................................................	10
6	SUMMARY.............................................................................................................	14

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TMX-2010 TRANSPORT MULTIPLEXER

ATSC Application Note

1 Introduction

With local network broadcast affiliates rushing to meet the FCC mandated on-air date for transitioning to digital ATSC broadcasting, determining an entry-level but fully compliant encoding and multiplexing solution that is extensible to future more sophisticated ATSC broadcast applications has become a common goal in the industry.

For example, a new ATSC broadcaster may begin with a digitally compressed MPEG version of their traditional programming along with the FCC compliant amount of program and system information protocol (PSIP), but later grow to add more programs

(multicasting) including high definition and data services.

Motorola BCS has designed a modular system to best meet a phased approach to full DTV operations. The basic building blocks include a transport multiplexer and standalone encoders. The elements seamlessly fit together to facilitate cost-effective compliance and rapid deployment of new services.

Digital Satellite Receiver
	ASI	TMX-2010 Multiplexer	SSI
High Definition Encoder
			SSI
	ASI	TMX-2010
HD Encoder
	ASI		ASI
Digital Video Encoder
			ASI
		IP
		TMX Element Manager

Broadcast Tower

Cable Plant

PSIP Generator	Monitor

Hub

Data Server

An application-rich local network broadcast affiliate incorporates network feeds, local created content, data services, server content and supports separate private networks and cable distribution pipes.

The Motorola Broadband Communications Sector’s (Motorola BCS) TMX-2010 transport multiplexer is built upon a flexible, module-based chassis, providing basic multiplexing, ATSC standard PSIP handling (A/65) and IP data encapsulation (A/90), and bitrate transcoding. Additional functionality such as statistical multiplexing and

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PC

DTV Set

TMX-2010 TRANSPORT MULTIPLEXER

ATSC Application Note

digital program insertion are optional upgrades. Motorola BCS’ SE-2000 digital video encoder is a one rack unit high device providing high quality standard definition encoding and audio processing. The high definition encoder contains all of the input/output connections necessary for converting incoming, full bandwidth HD video, audio and data into the ATSC-compliant MPEG-2 bitstream.

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TMX-2010 TRANSPORT MULTIPLEXER

ATSC Application Note

2 TMX-2010 Multiplexer

The TMX-2010 Transport Multiplexer is Motorola BCS' new generation modular solution for MPEG-2 cable, satellite and broadcast transport distribution architectures.

It supports many features to tailor MPEG-2 streams.

Service Multiplexing: Basic combining of multiple streams into one multiplex.

Grooming: The ability to select (add/drop) the streams that will appear in the output transport.

The TMX Element Manager provides user friendly GUIs for simple and flexible selection from the input MPEG-2 services into one or more customized transport stream outputs.

Video bit-rate transcoding: Transcoding is a method of partially decoding a MPEG-

2 video elementary stream followed by a re-encode for the purpose of reducing the video bitrate. The TMX-2010 supports transcoding of constant or variable bitrate inputs into statistically multiplexed groups.

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