Question 1 - Brief history of TV in the UK and abroad

Brief History of TV in the UK and abroad?

Public television broadcasting started in 1936, there are over 400 channels and for consumers there is on-demand content. On demand content is where you can watch programmes from the past seven days. You can watch television from many different ways, from the ordinary television also on – demand and live streaming from your Pc and your games console. In the UK there were two names who thought they invented the television these were Campbell – Swinton and John Logie Baird. Campbell – Swinton thought of the concept of the TV and John Logie Baird for the televisions practical demonstration.

The systems that are used in America and Canada is called NTSC, in Western Europe and Australia they use a system called PAL and in the Eastern Europe and France they use SECAM, without  standards conversion it is impossible to view one of these programmes in a different country.

As you will see in the tables below are the differences between SECAM, NTSC and PAL the differences you will find are the lines/field this means a complete video frame in the 525 line system consists of an even line field followed by an odd line field. In the 625 line system, a complete video frame consists of an odd line field followed by an even line field. Also horizontal frequency which is where the CRT moves from one side to the other, you will also fins vertical frequency which is where the CRT moves from the bottom to the top. Also the video bandwidth which is the minimum analogue bandwidth required to reproduce the smallest amount of detail contained in the video signal. The last two are the colour sub carrier this is the frequency that the colour information is at.  The higher the frequency the better results and finally the sound carrier is the frequency that sound information is at.  

NTSC NATIONAL TELEVISION SYSTEM COMMITTIEE

Lines/Field	525/60
Horizontal Frequency	15.734 kHz
Vertical Frequency	60 Hz
Colour Subcarrier Frequency	3.579545 MHz
Video Bandwidth	4.2 MHz
Sound Carrier	4.5 MHz

PAL PHASE ALTERNATING LINE

SYSTEM	PAL	PAL N	PAL M
Line/Field	625/50	625/50	525/60
Horizontal Freq.	15.625 kHz	15.625 kHz	15.750 kHz
Vertical Freq.	50 Hz	50 Hz	60 Hz
Colour Sub Carrier	4.433618 MHz	3.582056 MHz	3.575611 MHz
Video Bandwidth	5.0 MHz	4.2 MHz	4.2 MHz
Sound Carrier	5.5 MHz	4.5 MHz	4.5 MHz

SECAM SEQUENTIAL COLOUR WITH MEMORY

SYSTEM	SECAM B,G,H	SECAM D,K,K1,L
Line/Field	625/50	625/50
Horizontal Frequency	15.625 kHz	15.625 kHz
Vertical Frequency	50 Hz	50 Hz
Video Bandwidth	5.0 MHz	6.0 MHz
Sound Carrier	5.5 MHz	6.5 MHz

In the 1920’s a lot happened for television in 1922 on the 18^th October a British broadcasting company was formed, and then in 1923 a big step for TV there was the first daily weather broadcast. In 1924 a lot happened there was the first religious service broadcasted and the first Greenwich Time signal broadcasted, also the first broadcast by King George V. Then in 1926 John Logie Baird succeeds in transmitting Television pictures, On the first of January the BBC was established by Royal Charter as the British Broadcasting as the British Broadcasting Corporation. The first running commentary on a sports event was a rugby international match between England and Wales at Twickenham. Then to finish of the 1920’s John Baird experimented 30 – line television.

In the 1930’s the BBC started to broadcast Orchestra’s, Until 1936 there has always been a male TV announcer but on the 31^st August Elizabeth Cowell  entered the television world and became the first Female television announcer. In 1937 there was two big events for TV on the 12^th May there was the first use of TV outside a broadcast van. On the 30^th April 1938 it was a big time for sports fans as the first televised coverage of the FA Cup final. In the 1940’s not a lot happened for television, but then entered the 1950’s this is where a lot of television programmes started to be broadcasted, In the 1960’s a big event for television this was when  Princess Margret got married and it was being broadcasted on television also the Grand National. Also loads more TV shows started to be broadcasted, the first Doctor Who started in the 1960’s. In the 1970’s more and more television programmes started to be broadcasted, television was becoming more and more popular by the minute. As the years went by more and more television programmes started to be made and broadcasted, there was nothing new from the 1970’s onwards as everything was created before the 1970’s the only thing you could improve on your television was the size of the screen, as we hit the year 2000 flat screen TV’s started to be developed these were much smaller than the box televisions sets. Once everything was done in television they decided to add better graphics HD is very popular in most TV’s now.

As you have read the television has increasingly expanded throughout the years has gone by new programmes better pictures and the TV itself, we are in the year 2011 and they are still trying to make the television even better as 3D has come into the picture you can pick up television’s with special glasses so you can see the picture coming out to you. As the TV has gotten better through the years the price of one has also increased.