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All HD broadcasts are digital. Not all digital broadcasts are HD.
"Digital" is simply a way of coding TV pictures onto a radio wave so that your TV can receive the radio wave and turn it back into a TV picture. The old method was called "analog."
Digital is more efficient than analog and allows a lot more information to be carried on the radio wave. Since the wave can now carry more information, some TV stations are choosing to use that extra information for a high definition (HD) picture rather than a standard definition (SD) picture. In fact, there is so much extra room with a digital signal that most TV stations can now show several different programs at once! Most channels will now have several sub-channels. For example, instead of having just Channel 7, you might have Channel 7.1, 7.2, 7.3, and so on -- each with a different program.
An HD signal takes up a lot of room, so TV stations that broadcast an HD signal have less room to add additional sub-channels.
What is happening with the digital transition is that all analog TV broadcasts will be turned off. Only digital broadcasts will remain on the air. Each TV station decides what it will do with its digital signal. It can use the digital signal to broadcast one HD sub-channel and a few SD sub-channels or it can broadcast a lot of digital SD sub-channels. Most TV stations will choose to broadcast at least one HD sub-channel.
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What is the difference between HDTV and digital television?
High Definition (HD) is a form of digital television. High Definition is the highest quality of digital television available with the highest resolution, which results in superior picture quality. Listed below are some commonly found digital television resolutions. High Definition is also broadcast in widescreen format, otherwise known as 16:9 aspect ratio. Standard definition is broadcast in 4:3, which is a similar format to analog. Here are some commonly found digital resolutions: • 640x480 pixels (Standard Definition) • 1280x720 pixels (High Definition) • 1920x1080 pixels (High Definition - Often referred to as Full HD or True HD because this is the highest resolution available.)
What channel is torchwood on?
In 2006 the first series of Torchwood was broadcast on BBC3 and BBC HD. In 2008, the second series was broadcast on BBC2 and BBC HD. In 2009, the third series (Children of Earth) was broadcast on BBC 1. It was also shown on other channels in Australia, America and Canada. In 2011, the fourth series (Miracle Day) was broadcast on BBC1 and BBC HD along with Starz in the USA. The future and possibility of another series is currently unconfirmed.
Is Durabrand DU1901 digital?
If a television has a built in broadcast television digital tuner it will be in the menu set up.
What does a Sky Digital box do?
A Sky Digital box is a type of cable box. It is an HD cable box that records television shows that you set for it to record. It can hold up to 60 hours of HD shows.
Are TV stations still adjusting their digital equipment?
Television broadcasting is a constantly evolving process. The question suggests that changes in a channel's output are being noticed and it's entirely possible. The changeover from analog to digital production and the change from analog to digital transmission have both involved significant changes for studios and broadcasters and on top of that, the moves towards HD broadcasting have demanded even more changes. Now that the digital broadcasting change is largely completed, production facilities are now looking to incorporate HD systems as their next generation of equipment. It makes little commercial sense to purchase SD only equipment now HD equipment is falling in price. As studios and broadcast facilities replace equipment, it is common to upgrade to HD compatible hardware even if the station is not currently offering an HD output. Broadcast equipment has a typical operating life of 10 years, so buyers are looking a decade ahead when they make a purchase. As equipment changes, there will be subtle, or even obvious changes, in the output of a station. Each new piece of equipment offers an opportunity to improve output performance so we can expect to see changes from time to time.
Will satellite TV be all HD in February 2009?
No. All satellite TV is digital now. Some satellite TV is HD now, and more will be switching from HD to "standard" resolution. The February 2009 analog-to-digital switchover in the United States has nothing to do with HD. The digital conversion changes the format of the over-the-air broadcast channels from analog to all digital. But if you have satellite or cable TV, you don't get "broadcast" signals anyway.
If after the digital transition shouldn't ALL tv channels be HD then why do cable and satellite charge more for HD?
I'll address the first of these two questions: Post-transition all US over-the-air broadcasts are digital. That refers to the modulation technique used to place a signal on a carrier wave. High Definition refers to the picture resolution, as does Standard Definition. A High Definition broadcast will always be digital, but a digital broadcast will not always be High Definition. A DVD will deliver a digital picture in SD. A Blu-Ray DVD delivers a digital picture in HD. The same concept applies to broadcasters. The FCC requires digital broadcasts, but does not require that they be HD. The cable provider I use does not charge for HD channels.
Does the CBS Early Show broadcast in HD and if so why not in the San Antonio Market?
No it is not broadcast in HD. It is scheduled to be broadcast in HD sometime in 2010.
Is the HDTV analog?
HDTV is a purely digital signal format today. There are in fact some analog standards for carrying HD component signals but they have fallen into disuse. Within the broadcast domain, HD is only digital and within the domestic market, HD sources are now using HDMI exclusively.
Are cinemas showing films in HD yet and if not why not?
HD (High Definition) is a term relating to electronic digital media. Movie theaters project film images, not electronic ones. HD claims to be as clear as film, but theaters have no interest in HD as their projection system is still superior. Even TV commercials are shot on film (not HD video) before transferring to a digital media for broadcast.
Is this TV broadcast HDTV ready?
This TV has a built in digital tuner and is HDTV ready so you can view over the air HD programming.
Will a store brought HD receiver get local stations in HD?
You need three things to get HD 1. The show has to be recorded in HD 2. The show has to be broadcast in HD 3. You need an HD receiver and TV I have heard of some local stations that broadcast over the air in HD. Most of them broadcast a few shows and sports in HD over Cable and over Satellite TV.
When did HD TV broadcasts begin in Europe?
The first HD TV broadcast in Europe was in 1990. This broadcast was not to houses but to cinemas. The broadcast was used to show the Word Cup.
What is Advanced Digital Broadcast's population?
The population of Advanced Digital Broadcast is 900.
Do you need a high definition TV if you have digital cable?
Using HD TVSome satellite and cable networks do broadcast 720p HD, at this stage there are no full 1080 HD broadcasts. You need to live in an area where this service is provded and you'll need to pay a subscription fee and you will need a digital receiver with an HDMI output to your TV. Also, you can watch analog or non-HD digital programing on a HDTV. To enjoy the better resolution that HD offers, you need to get HD signals from somewere: Free HD broadcasts with an antenna, HD cable, HD satellite, HD/BluRay DVDs...
What are HD movies and do blue ray movies work in HD players?
HD DVDs or High Density Digital Versatile Disc are digital optical media formats. While HD DVDs are similar to Blu Ray DVDs they are not the same. HD DVDs were discontinued in 2008. Therefore, no you are not able to use a Blu Ray disc in an HD movie player.
Does your TV have to be HD for digital TV?
All TVS that you can buy are ready for the digital signal. You do not have to buy an HD TV to get a digital signal.
