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Digital Transition

Digital Transition Table of Contents: How do YOU fit in?
 

Transition Basics:
'The Plan', overview of transition, definitions, why DTV?

 

Products:
Digital Transition Products
by Blonder Tongue and Drake

Transition Scenario Details
DTV Glossary
Consumer Basics FAQ
Info for Cable Operators
Scenario 1
Digital Off-Air Reception -
Digital Viewing (8VSB)
Scenario 2
Digital Off-Air Reception -
Analog Viewing
Scenario 3
Digital CATV (QAM) Reception -
Analog Viewing
Scenario 4
EBS/ITFS (QAM) Reception -
Analog Viewing
Scenario 5
Digital Off-Air (8VSB) Reception -
Digital Viewing (QAM)
Scenario 6
Digital CATV (QAM) Reception -
Digital Viewing (QAM)
Scenario 7
Digital CATV (QAM) Reception -
Analog Viewing (via IP)
Scenario 8
Digital Off-Air (8VSB) Reception - Simulcast Viewing (8VSB) Digital and Analog
Scenario 9
Digital Off-Air (8VSB) Reception - Simulcast Viewing (QAM) Digital and Analog
Scenario 10
Digital Off-Air (8SVB) Reception - Analog Viewing

 






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Established in 1982, Multicom, Inc. is a manufacturer and full-line stocking distributor for end-to-end integration of communication solutions.

Multicom stocks over 13,000 products from more than 270 of the world's major manufacturers. These products are used to acquire, process and distribute television, data, voice, security, and traffic control signals over fiber optic, copper, and coax cable.

 

Digital Transition - Scenario 6

Digital CATV (QAM) Reception - Digital CATV (QAM) Viewing

Source Distribution Network Viewing Location
Digital CATV
(QAM)
Coax/HFC/Ethernet Digital TV - CATV Mode
(QAM)
 
Explanation:
  The system will allow you to select a few desired digital channels from the local Cable Television Company, and ignore the undesired channels. This system is the digital version of a traditional ‘Cherry Picker’ system.
Application:
  This is extremely valuable if a large facility only has a 450 MHz distribution network, and the MSO’s digital offering starts at 650 MHz, there is no room for the digital tier without a costly network upgrade. A transcoder can receive the desired high frequency QAM channels and transcode them to available channels within the existing 450 MHz network, delivering the desired CATV QAM channels, while preventing a costly network upgrade.
   
Component Block Diagram Further Information
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Component Block Diagram - Details

The ATSC to QAM Transcoder is a modular unit that receives the QAM (Digital CATV clear QAM) signal and transcodes it to another CATV QAM channel. This transcoder can be used to “Cherry Pick” selected digital channels from the existing CATV QAM digital lineup and process it for redistribution. If the original CATV QAM channel was encrypted, it will remain encrypted, requiring an authorized set-top for viewing. If the original CATV QAM channel was in the clear, it will remain in the clear, and can be viewed on any television with a QAM digital tuner set to "CATV" mode.

This system will allow the facilities operator to insert the selected CATV QAM carriers in to a bandwidth limited private CATV network. The input digital signal is stripped of its original QAM digital modulation, leaving just the basic data stream. The transcoder then creates a new, clean QAM carrier and reinserts the original data stream on to this new QAM carrier.

Functionality

This system is the digital version of a traditional “Cherry Picker” system. The system will allow you to select a few desired digital channels from the local Cable Television Company, and ignore the undesired channels. These desired digital channels can then be redistributed through the existing hybrid fiber / coaxial network within the facility. This is extremely valuable if a large facility only has a 450 MHz distribution network, and the MSO’s digital offering starts at 650 MHz, there is no room for the digital tier without a costly network upgrade. The transcoder can receive the desired high frequency QAM channels and transcode them to available channels within the existing 450 MHz network, delivering the desired CATV QAM channels, while preventing a costly network upgrade. If the original CATV QAM channel was encrypted, it will remain encrypted, requiring an authorized set-top for viewing. If the original CATV QAM channel was in the clear, it will remain in the clear, and can be viewed on any television with a QAM digital tuner set to "CATV" mode.