Go Back   Physics Help Forum > College/University Physics Help > General Physics

General Physics General Physics Help Forum

LinkBack Thread Tools Display Modes
Old Nov 8th 2012, 03:10 PM   #1
Junior Member
Join Date: Nov 2012
Posts: 2
Digital Cable TV

I have a question about transmitting HDTV signal through the broadband.

How much bit rate is required to transmit one channel. Uncompressed this requires 1.5 Gbps for about fifty frames per second. And compressed ?

At home internet speed is 30 Mbps. What kind of line do digital cable providers use to send all the data for television. They can send data for over hundred channels.

Can someone explain me or suggest me documents for what possible is over the broadband in conjunction with the digital cable tv.

MaxBit is offline   Reply With Quote
Old Nov 8th 2012, 06:42 PM   #2
Physics Team
ChipB's Avatar
Join Date: Jun 2010
Location: Morristown, NJ USA
Posts: 2,331
HDTV is delivered as a standard MPEG-2 format, at 25 - 27 Mb/s for a channel. The transmission protocol over the Cable TV plant uses a quadrature Amplitude modulation scheme. Don't confuse the IP over Ethernet data rates and protocols like you get for your home internet with the formats used for digital TV distribution - they are completely different.
ChipB is offline   Reply With Quote

  Physics Help Forum > College/University Physics Help > General Physics

cable, digital

Thread Tools
Display Modes

Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Digital Control help tracker890 Electricity and Magnetism 0 Apr 3rd 2014 06:37 AM
Digital Electronics Xenophilius Atomic and Solid State Physics 1 Jan 11th 2010 08:59 PM
How do you find the tension of this cable moodylurker08 Kinematics and Dynamics 5 Sep 19th 2009 01:58 AM
Pulley/Cable Problem MEC Kinematics and Dynamics 2 Apr 22nd 2009 10:20 AM

Facebook Twitter Google+ RSS Feed