Since the begin of Tv in the late 1920’s the buyer has selected the channel to view by deciding on a number on the Tv this kind of as channels 2 to 13 for VHF and 14 to 69 for UHF. With the arrival of cable Television set this has changed relatively with channel alternatives from 2 to about ninety nine. The typical consumer has become very comfortable with this system.
When the sector commenced advancement of digital Television set and compression they experienced to build a new program. The normal that was created was set up by the Superior Television Standards Committee (ATSC).
Since digital compressed Television set is now able of transmitting much more than one particular plan on a Tv channel it was determined to give the plan a Main channel number and a Small channel amount separated by a period of time (.).
For instance a digital system that is carried on VHF channel six would be named six.1. If there was samsung 32 inch led smart tv or third system getting transmitted they would be referred to as six.two or 6.3. If they ended up transmitted on a UHF channel they would be forty five.1, forty five.three and forty five.seven. To make issues even far more confusing the FCC mandated that Tv set stations currently being transmitted on Channels 2-six go to yet another frequency. This typically resulted in a channel that was recognized for fifty several years as Channel three to be transmitted on UHF channel 26 but named 3.1… Extremely perplexing without a doubt.
When these plans ended up picked up by the neighborhood cable firm it tended to get even a lot more perplexing until the Virtual channel numbering program was introduced. This is because on a cable technique, there can have as a lot of as ten or twelve plans carried on a single channel and the channel might be irrelevant to the system amount or traditional channel variety.
With the introduction of a digital channel amount technique a number is assigned to a Software irrespective of where the channel is actually carried on the program. This means the number exhibited on the Television set or Cable box will be among 2 and 999 and will not have any duplicates and no minor numbers this kind of as a.1 or.2. The technique operator can assign any digital quantity.
For instance, when we look at channel three mentioned above it is transmitted by the broadcaster on UHF channel 26. The cable company might location it on the cable on channel 57.three but they have established it on virtual channel quantity 3. This way when you select channel 3 on your cable box, the previous channel 3 you viewed for several years is what you get.