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Topic: Headend

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	CableLabs Cable Systems Overview
		A programmer usually transmits a television signal through the air from a satellite, microwave, or local television antenna to the headend.
		In the early days of cable television, trunk, feeder, and drop were the coaxial cables that carried the signal from the headend through a series of distribution points to the terminal equipment in a subscriber's home.
		In the HFC architecture, a single fiber is run directly from the headend to an optical node in a neighborhood.
	www.cablelabs.com /news/primer (802 words)

	SCS Communications "The Headend"
		The headend equipment is the mainframe of the cable television system.
		This is where the input from satellite signal, local antenna, and other sources are combined, balanced and amplified for distribution on a single cable.
		For longevity of equipment the optimum temperature for the headend room is 80 degrees or below.
	www.scscommunications.com /headend.html (79 words)

	Cable television headend - Wikipedia, the free encyclopedia
		The headend facility is normally unstaffed and surrounded by some type of security fencing and is typically a building or large shed housing electronic equipment used to receive and re-transmit video over the local cable infrastructure.
		The cable TV headend will normally have several large FSS-type television receive-only satellite television dishes for reception of cable/satellite TV networks such as ESPN, CNN, or HBO; a dedicated, non-movable dish is required for each satellite that the cable TV utility wishes to receive cable channels from for distribution over its system.
		A device called a modulator is installed at the local station's facilities to feed their programming over this line to the cable TV headend, which in turn receives it with another device called a de-modulator.
	en.wikipedia.org /wiki/Cable_television_headend (540 words)

	Digital cable headend for cable television delivery system - Patent 5682195
		It is an object of this invention to provide a cable headend that receives a large bandwidth of video/audio programming and selects programs from among the large bandwidth to accommodate a limited bandwidth between cable headend and viewer homes.
		Each cable headend 42 accepts the entire signal and customizes the signal for the local cable system by stripping those portions of the satellite signal "s" that are unable to be handled by the local cable system 60, 62, 64.
		Signals received by the cable headend 42 must be decompressed before transmission from headend 42 to subscriber location only when the compression algorithm used for the cable system differs from the one used for satellite transmission 41.
	www.freepatentsonline.com /5682195.html (14015 words)

	HITS - Headend in the Sky
		A headend is a facility that contains sending and satellite receivers, has antennas which receive signals from local TV studios, and sometimes has TV studios inside the facility which produce shows and send the signals to other locations by satellite or antenna.
		A device in a digital headend that receives digital signals (program and data), decrypts those signals, re-encrypts the signal, and passes them through to the cable plant for delivery to customers.
		A device in a digital headend that receives control data from out-of-band the primary IRT and modulates it to a carrier frequency that modulator is used to deliver the control data to the digital set-top box.
	www.hits.com /default.asp?path=glossary.htm (5953 words)

	CCI - Network Infrastructure Solutions - Headend
		Our capability to complete a large portion of your project at our pre-rack facility can significantly cut the time your system is affected by on-site installation as well as trim weeks from a traditional schedule.
		Once the information is collected, CCI headend engineers work with you to come up with the best design possible taking into account your requirements and cost considerations.
		No matter how complex your headend project may be, we have the design, engineering and installation expertise necessary to get the job done right the first time.
	www.cciinc.us /Headend.htm (498 words)

	Motorola - Connected Home Solutions
		If the headend system requires the reception and processing of satellite and off-air signals, the channel lineup will be reviewed and discussed with the customer in detail.
		Headend systems may include satellite and off air antenna installations, full or partial analog and digital headends, fiber transport hub sites, integrated fiber distribution and processing, and any other customer specified requirements.
		Once the headend system is installed and activated, a hard and soft copy of the final as-built CAD drawings will be furnished to the customer.
	broadband.motorola.com /noflash/tns_headend.html (1206 words)

	Birds-Eye.Net DHCP Recommendations
		The Headend Provisioning Agent (HPA) provides a common user interface to the address provisioning system for the purpose of continued expansion and maintenance of the network and also enables localized BOOTP services for legacy headend nodes and provides a basis on which to distribute provisioning services.
		Adding and modifying headend nodes has one additional feature with is the ability to generate DNS entries for the headend nodes.
		Since the headend nodes do not have a IP address lease (dynamic address) associated with them they cannot obtain a dns entry using the current process of using Remedy, the provisioning server, and the dns script nor would it be feasible to have them manually entered.
	www.birds-eye.net /technical_archive/headend_provisioning_agent.htm (5004 words)

	Put a pod in your headend - 12/1/2000 - CED - CA6260425 (Site not responding. Last check: 2007-10-08)
		The obvious preference would be to use an equipment installation philosophy that would allow the deployment of telephony and high-speed data to recently rebuilt or upgraded plant, but independent of continuing construction activity in the rest of the plant, thus creating the potential for incremental revenue before the entire plant upgrade has been completed.
		All too often, the layout of the headend facility forces the system operator to wait until all the homes served by the headend are wired for two-way service before providing service to any of them due to equipment integration schedules at the headend.
		Constant movement of programming between satellites, combined with channel re-arrangements, usually required that a bomb be dropped on the headend every two or three years so that the engineers could start from scratch again.
	www.cedmagazine.com /article/CA6260425.html (1504 words)

	Headend Web Server (HWS) - Remote Control and Monitoring for QAM Transmodulators (Transcoders)
		The Headend Web Server (HWS) from Blonder Tongue allows an operator the means to remotely access a QAM Transcoder (transmodulator) Series headend from anywhere in the world using a web browser over the Internet without requiring any additional software to be installed.
		The easy to use interface provides many functions, such as display and control of the input transponder frequency, the output channel, digital signal level, the signal to noise ratio as well as the ability to remotely turn off the QAM signal and turn on a hot spare unit.
		It offer’s the ultimate customer service solution for remote and unmanned headend locations with it’s user activated capability to “remotely diagnose and heal a field problem” and eliminating the need for a costly truck roll or lengthy downtime.
	www.blondertongue.com /QAM-Transmodulator/headend_Web_server.php (389 words)

	Celite Systems' DSL headend: driving efficient DSL delivery - 2003 Product of the Month - CS200 and CS400 broadband ... (Site not responding. Last check: 2007-10-08)
		Co-located at the carrier's neighborhood cross connect or SAI (Serving Area Interface), the CS200 and CS400 headends utilize a point-to-multipoint architecture similar to the cable MSO network.
		By placing the DSL headend closer to the subscriber, the CS shortens the loop length while enabling higher data speeds.
		From the headend to the subscriber, the VDSL+ modems communicate with the CPE on a one-to-many basis where downstream data is only broadcast to those loops that have an active VDSL+ modem.
	www.findarticles.com /p/articles/mi_m0NUH/is_5_37/ai_100231051 (742 words)

	Commscope Official Website (Site not responding. Last check: 2007-10-08)
		As such, headends today are delivering more advanced services to consumers.
		Cable performance and integrity are critical in the network, but aesthetics and the ease of identifying cables are important too.
		CommScope has developed a small form factor headend and HDTV cable that meets the exacting requirements of HDTV signals.
	www.commscope.com /html/db_headend.shtml (135 words)

	CATV/SMATV/Broadband Headend Products for Telecommunication System Design
		The broadcast signals routed to the headend are filtered to reject any unwanted signals from adjacent off-air channels and adjusted for proper aural and visual carrier levels in.
		Most satellite signals are scrambled and the satellite receiver in the headend is used to decode the signals.
		The combining process is passive since the signals already occupy discrete frequencies and have been adjusted to the same RF carrier level by their respective processing equipment.
	www.blondertongue.com /Headend (408 words)

	headend and dividing network
		Where it is possible to order the headend and dividing network in us?
		To whom is the link to the headend and dividing network necessary?
		The headend and dividing network too is necessary to me. How it to order?
	hometown.aol.com /headroom61/headend-and-dividing-network.html (306 words)

	QRF Headend Page
		An optional output diplex filter allows QRAM to drive a coaxial cable plant directly connected to the headend.
		Both models have a 15 dB "combining" directional coupler after the hybrid gain stage to provide isolation and to prevent specialty channels and RF modem signals from interfering with similar signals on the same frequency in other areas or fiber nodes of the headend/OTN signal lashup.
		for the headend is offered for return path usage with 5 to 45 MHz bandwidth with a low-pass filter and in 5 to 200 MHz bandwidth unfiltered.
	www.atxnetworks.com /qrf/headend.htm (967 words)

	Mine Site Technologies: Headend Equipment
		The Headend equipment can also include additional items such as telephone interconnect units for interfacing to the mine PABX system.
		The Headend is usually contained within a suitable 19" rack enclosure, this allows for easy maintenance and servicing of the system.
		For larger systems, that is when up to 16 channels are utilised, the Headend will usually be installed in two (2) enclosures.
	www.minesite.com.au /headend_equipment (228 words)

	IP TV Video Headend Global Forecast - 2004-2008
		This report is a forecast of the IP TV Video Headend Global Forecast for Asia, Europe, North America, and the Rest of the World.
		This is a detailed forecast for the IP TV Video Headend market that is based on MRG’s IP TV Forecast and IP TV Global Forecast Update – March 2005.
		The increase in North America is due to the strong commitments to IP TV made by SBC, BellSouth, and Verizon in the fall of 2004.
	www.mrgco.com /TOC_VideoHeadend_Apr05.html (1583 words)

	Headend (Site not responding. Last check: 2007-10-08)
		Headend, alo known as head-end, is the end point of a network where all stations transmit toward the headend; the headend then transmits toward the destination stations.
		In a cable network, headend is the central distribution point for a CATV system.
		Video signals are received here from satellites and maybe other sources, frequency converted to the appropriate channels, combined with locally originated signals, and rebroadcast onto the HFC plant.
	www.javvin.com /networkingterms/Headend.html (78 words)

	News @ Cisco: Casema Selects Scientific Atlanta Digital Headend System for the Netherlands
		These advanced multiplexers, along with several DCMs, are already in service for Casema, creating a redundant digital headend to serve its 1.4 million subscribers across its service area in the western region of the Netherlands.
		"We needed a robust, flexible digital headend to help deliver the reliable service our customers expect when they choose Casema as their video entertainment provider," said Andrei Noppe, vice president of network operations at Casema BV.
		Scientific Atlanta's Digital Content Manager is an extremely dense platform that delivers advanced technology to help launch and manage digital services, while supporting the freedom and flexibility for operational needs.
	newsroom.cisco.com /dlls/2006/prod_072106.html?CMP=AF17154 (728 words)

	Aurora Networks -- Headend and Hub Products -- NI30x0 Network Interface Modules (Site not responding. Last check: 2007-10-08)
		The NI30x0 is a chassis-based module that interfaces headend, hub or regional data center (RDC) WAN routers and switches to Aurora’s transport network.
		Available in 10km or 40km models, it provides up to 16 full duplex, wirespeed, symmetric, dedicated, and completely independent 100Mbps connection to up to 16 business customers, for a total throughput of 1.6 Gbps.
		The NI30x0 can provision new customer connections from the headend in minutes, and can locally or remotely monitor and manage every active device in Aurora’s Fast Ethernet network via standard SNMP, including nodes, transceivers, receivers, power supplies and chassis.
	www.aurora.com /products/headend-NI3000.html (224 words)

	R.L. Drake SCT860 QPSK to QAM Digital Headend Transcoder (Site not responding. Last check: 2007-10-08)
		The R.L. Drake SCT860 transcoder module is a professional quality, modular, digital headend component providing QPSK to QAM transmodulation and RF upconversion functions in a single module.
		It receives a wide bandwidth QPSK input signal from a satellite transponder, demodulates the digital signal, and resends the recovered MPEG2 digital transport stream through the cable system via a much narrower bandwidth QAM modulated signal.
		Up to 63 transcoders in a headend can be monitored or controlled by a single connection*.
	www.rldrake.com /digital/sct860.html (800 words)

	Envivio, Inc. - For IPTV - Video Headend
		As operators expand their reach to offer both IPTV and mobile digital television services, their video headend technology must support a variety of bit rates and transport networks.
		The superior encoding algorithms of the Envivio IPTV video headend offers broadcasters and IPTV service providers greater processing power for advanced compression capabilities and noise reduction for bandwidth constrained applications.
		Within one comprehensive view IPTV operators can increase network efficiency by tying the specific video service impacted by a network problem to the device causing the problem, analyzing video quality-of-service (QOS), automating scheduling, and performing end-to-end provisioning of video across the entire network.
	www.envivio.com /solutions/iptv_broadband_television.php (398 words)

	PRESS RELEASE Minerva Networks Scales VC8000 Headend Platform With Professional-Quality MPEG-4 AVC Video Processing ... (Site not responding. Last check: 2007-10-08)
		The MPEG-4 AVC compression standard allows more video channels (or the same number of channels, but at higher quality) to be delivered simultaneously over the same xDSL or fiber connection than MPEG-2, the compression format currently used in most digital Television deployments.
		Thanks to the Minerva VC8000 modular architecture operators can choose to deploy MPEG-2 compression technology today, with the option to easily upgrade their headend to perform MEG-4 AVC encoding in the future.
		The new Minerva MVP processing blade will be used to update existing headends and to enable new deployments.
	www.marketwire.com /mw/release_html_b1?release_id=76128 (550 words)

	Aurora Networks -- Headend and Hub Products -- TR3000 Plug-in Optical Transceiver (Site not responding. Last check: 2007-10-08)
		These modules are functionally identical to the transceivers already built into many of Aurora Networks’ products, but provide a flexible, plug-in means of enabling additional optional secondary ports in several of those products.
		The TR3000-PI has been optimized for optical communications between various headend or hub equipment.
		Conforming to the Small Form Factor Pluggable (SFP) Multisource Agreement, these state-of-the-art components are designed expressly for high-speed bi-directional communication applications that require rates of up to 2.125 Gbps, with the laser transmission portion of the device operating at a wavelength of 1310 nm.
	www.aurora.com /products/headend-TR3000.html (226 words)

	Headend/Inside Plant :: QRF Rack & Wall Mounted Products
		The 2RU QRFN 750 and 870 MHz fiber amplifiers are designed for headend and hub applications.
		QRF Headend Rack Mounted Optical Transmitter (QFOT) Specifications Pdf
		QRF Headend Rack Mounted Optical Transmitter (QFOT) User Manual Pdf
	www.atxnetworks.com /QRFheadendOptical.html (422 words)

	WEGENER, applications for video headends
		It will ensure a cable programmer’s content gets to the right location, at the right time, in a secure manner.
		Reduce headend complexities with optional built-in multiplexers and i/o ports
		Since 1988, WEGENER has developed headend products that allows for local commercial insertion by cable systems with well over 50,000 units deployed.
	www.wegener.com /applications_tv_videoheadend.htm (312 words)

	PRESS RELEASE Eagle Broadband's Super Headend Is Now Operational (Site not responding. Last check: 2007-10-08)
		Over a hundred channels of television content are now streaming in Internet Protocol from the NewCom teleport to the NAP of the Americas for distribution over fiber to Eagle's IPTV customers.
		Eagle now has the operational ability to collect and digitize a wide range of television content from 30 satellites over North America plus other Latin content satellites over the Atlantic Ocean.
		Using 21 signal feeds from seven satellite dishes, to be largely superseded over time by Simulsat dish technology, which enables a single dish to collect more than 20 signals, Eagle's new headend facility delivers a broad range of cable channel content.
	www.marketwire.com /mw/release_html_b1?release_id=168719 (425 words)

	Headend System
		This example headend serves to familiarize you with some of the headend products offered by TLE.
		boosts weaker "distant antenna" signals, to compensate signal losses from antenna down lead and headend components (recommended signal level into headend components is +10 to +20 dBmV)
		This is sufficient to deliver signals to all TV/FM outlets (80 to 300 outlets) connected to TV distribution system.
	www.tinlee.com /Headend_Dgm-only.htm (516 words)

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