First of all Zworykin invented a device that was able to convert light waved into electrical impulses, this was then followed up by Baird who created the first television set.
Baird moved to England where he applied himself to follow his dream of making television. Baird successfully managed to transmitt a flickering image in 1924 which could be picked up a few feet away. In 1926 he gave the first demonstration of television from real images to the world.
John then moved on to making his own television company which was named the "Baird Television Development Company" his company managed to achieve the first transalatlantic television transmition between London and New York and also managed to transmit television a ship which was in the mid-alantic ocean.
1929 was a bigish year for Baird where he managed to get the facilities to develop an experimental television service, this was given to him by the German post office, this meant that television had now been introducted to both Germany and the United Kingdom.
The only problem in which they were faced with was because Baird had spent so long trying to fix his idea it ended up becoming obsolete as new electric systems were being designed because of this in 1937 John Baird's system was dropped and people started using Marconi's system. During 1941 John Baird works on his own, after his company had gone into liquidation and manages to create and demonstarate his own 600 line HDTV colour system for televisions.
in 1943, Zworykin, as mentioned above manages to develop his own camera tube, this gets named Orthicon.
Between 1948 and 1992 there is a massive increase in television sets which were in peoples houses. During1948 there was roughly 1 million sets,to which half of them were in colour! In 1992 there was a massive increase to 201 million homes in which had a television. (United States) Worldwide there is roughly 900 Million television sets being used, most of them by now would have been in colour too.
Television is still developing today, i from a site i used for research;
"The US switch-off of all analogue terrestrial TV broadcasts is scheduled to begin NO LATER THAN February 17, 2009
The UK switch-off of all analogue terrestrial TV broadcasts is scheduled to begin in 2008. The last regions will be switched off in 2012
A UK Digital Terrestrial replacement, called Freeview, enables analogue television sets to receive prrogrammes"
PAL and NTSC are both TV standards. Pal, in which stands for Phase Alternating Line is the United Kingdom's television standard whereas NTSC stands for National Television System Committe, this is based in the United States. Due to the standards being rather different if you brought a DVD in the United States and wanted to play it in the United Kingdom, it may not work, to make it playable on your system you would have to reformat it to make it become suitable for playing on your own DVD player. First of all PAL sends its frames as 25 per second whereas with NTSC it sends them at a greater 30 frames per second. Frames per second is basically talking about how many images are transmitted per second of viewing. NTSC TV's have a tint in which allows the viewer to change the colour of the picture, meaning that the the colour correction for these systems are as manual. Pal on the other hand is different and uses phase alternation which basically means the waves get sent altenrnativly, because of this any major errors are able to be picked up and sorted out, this also means that there is no major need for any sort of tint as the colour corrections is done automatically. NTSC faults are occasionally visible to the naked eye, unlike PAL.
As mentioned above NTSC transmitts at 30 frames per second because of this the tv images will be alot faster than those shown on a PAL television, this helps the overall image to be alot better on a PAL TV set that those you would get on NTSC. Secondly the NTSC only transmitts with 525 resoloution lines compared to PAL with a much higher number of 625 lines of resolution, this means that PALs resolution and picture quality will be alot better and higher than NTSC.
Another major difference between the two standards is where infact they are able to be viewed, NTSC is designed for basically most of South and North America, compared to Pal in which can be viewed in European countries.
The way in which we consume Television has changed greatly over the years. First of all the stations have had a massive change since when television was first about. John Baird used to stream his television signals from his own company before it went into liquidation, soon to follow was the first ever station which is still going today, this was of course the BBC. Soon to follow this was BBC2 and ITV. In 1982 Channel 4 was introduce, this was another station in which allowed commercials this changed the way in which television was viewed. As tv developed satellite tv was soon to follow and in 1989 the launch of BSB finally happened, but it didn't stop there, in 1990 there was the massive launch of Sky. Sky allowed you to watch more channels than just the four terrestrial channels in which you were getting from anologue signals. After Sky the last of "5" terrestrial channels were launched, this was infact "Channel 5"
When televisions were first created they were rather big and had alot of parts to them, now you are able to get the thin plasma TVs and LCD Tvs along with the massive increase within the amount of high defenition available, they are becoming more and more popular. TV's are also changing due to just being able to get a little screen you are able to get screens in which are about 52" for your own homes.
Not only has television developed within becoming alot smaller and the use of digital channels and freeview, you are now able to get "VOD" which stands for video on demand. Video on demand allows you to select what TV programme you want to watch through online television streaming. An example of this is the hit 4OD which is channel 4's "Video on demand" website. 4OD allows viewers to go to their website and select a programme they may have missed, for example Hollyoakes and watch it all online.
The availability to televisions has increased too. Years ago only a few houses on a street would actually have a working television, and some places, for example a hall... when something important came on television, like a royal wedding, people would gather at houses in which there was a television and would all watch the programme together, in modern day this doesn't happen due to homes commonly having more than one television, the only near example to this would be people going to the pub to watch a football match or something along these lines.
On the other hand, television and online viewing is not the only way in which people now can consume television! phones and even Ipods are now allowing you to have the ability to get TV streamed straight to your phone, or even just highlights of something like a sports scores.
Television is still developing today, 3D has been brought into the cinemas and i don't think it will be long until its being streamed into our own houses (even though sky 3D already exists)
Another major difference between the two standards is where infact they are able to be viewed, NTSC is designed for basically most of South and North America, compared to Pal in which can be viewed in European countries.
The way in which we consume Television has changed greatly over the years. First of all the stations have had a massive change since when television was first about. John Baird used to stream his television signals from his own company before it went into liquidation, soon to follow was the first ever station which is still going today, this was of course the BBC. Soon to follow this was BBC2 and ITV. In 1982 Channel 4 was introduce, this was another station in which allowed commercials this changed the way in which television was viewed. As tv developed satellite tv was soon to follow and in 1989 the launch of BSB finally happened, but it didn't stop there, in 1990 there was the massive launch of Sky. Sky allowed you to watch more channels than just the four terrestrial channels in which you were getting from anologue signals. After Sky the last of "5" terrestrial channels were launched, this was infact "Channel 5"
When televisions were first created they were rather big and had alot of parts to them, now you are able to get the thin plasma TVs and LCD Tvs along with the massive increase within the amount of high defenition available, they are becoming more and more popular. TV's are also changing due to just being able to get a little screen you are able to get screens in which are about 52" for your own homes.
Not only has television developed within becoming alot smaller and the use of digital channels and freeview, you are now able to get "VOD" which stands for video on demand. Video on demand allows you to select what TV programme you want to watch through online television streaming. An example of this is the hit 4OD which is channel 4's "Video on demand" website. 4OD allows viewers to go to their website and select a programme they may have missed, for example Hollyoakes and watch it all online.
The availability to televisions has increased too. Years ago only a few houses on a street would actually have a working television, and some places, for example a hall... when something important came on television, like a royal wedding, people would gather at houses in which there was a television and would all watch the programme together, in modern day this doesn't happen due to homes commonly having more than one television, the only near example to this would be people going to the pub to watch a football match or something along these lines.
On the other hand, television and online viewing is not the only way in which people now can consume television! phones and even Ipods are now allowing you to have the ability to get TV streamed straight to your phone, or even just highlights of something like a sports scores.
Television is still developing today, 3D has been brought into the cinemas and i don't think it will be long until its being streamed into our own houses (even though sky 3D already exists)
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