diva assessment 2 dom1

8/14/2019 Diva Assessment 2 Dom1

1/31

HISTORY OF

TELEVISION


2/31

1884 INVENTION OF SCANNING DISK BY PAULNIPKOW.1897 INVENTION OF CATHODE RAY TUBE BY KARLBRUAN.

1923 INVENTION OF ICONOSCOPE WHICH BY DR.V.K. ZWORYKIN.MANY MORE INVENTION OVER THE YEARES LEADTO THE DEVELOPMENT OF TELEVISION.

EVENTS THAT LED TODEVELOPMENT OF TELEVISION


3/31

SIMOLTANIOUS DEVELOPMENT OFSIMOLTANIOUS DEVELOPMENT OF

TELEVISION IN US AND UKTELEVISION IN US AND UK

AMERICA

1927 American telephone &

telegraph company gave apublic demonstration inwhich a speech by the USsecretary of commerce

Herbert Hoover was broadcast fromWashington to New York.


4/31

Within one year General Electric began makingregular, thrice weekly, broadcast from radiostation WGY.

After few months WGY transmitted A

SMITHs speech accepting his nomination forUS presidency.

In the same year it broadcasted the firsttelevision drama The Queens Messenger.


5/31

ENGLAND

In 1926 JOHN LOGIE BAIRD inventedtelevision in ENGLAND. He did it bymechanically scanning a screen of 15 lines.

His quality of image was very poor.

Two years later he demonstrated color

television transmissionHe was unable to broadcast officially until

post offices engineers were happy with

quality of his experimental transmission.


6/31

British Broadcasting Corporation was unhapp with the quality of the transmission and onlreluctantly allowed him to use their

transmitters.

Initially BBC used competing EMIs electronic

scanning system and BAIRDs mechanicalsystem , on alternating weeks.

Eventually , EMIs system was clearly shown to

be more reliable and better quality thaBAIRDS mechanical system.


7/31

BBC1926 BBC became a nationalized

corporation.

12 people the good and great public figures

were appointed as heads.

John Reith was first director general of BBC.

Mission was to enlighten, educate andelevate wherever possible.


8/31

DIRECTOR

GENERALJohn Reith MARK THOMPSON


9/31

Shortly after the fair of 1939, TVs progress wasinterrupted by a series of order and then byworld war II.

Next year the federal communicationcommission ordered a halt in expansion of TVpending completion of investigation to

determine best technological standard for TVtransmission .

URDLES THAT THE TVNDUSTRY FACED


10/31

Then war came, production of TV sets stoppedcompletely.

Controversies about which band to be selectedand whether transmission should be in black-and-white or in color.

In 1948 due to large number of TV stations , soserious interference was occurring socommission imposed freeze on new assignments.


11/31

Color televisionColor television

Development of color TV was first considered by thefederal communication commission in 1940s .

It was re-examined in 1945 and in 1947 still receptionwas not technically satisfactory.

CBS and RCA were the main companies to develop

color television .


12/31

Commission approved CBS system, but no companyexcept CBS came forward to manufacture the setsusing CBS system.

For a long period RCA was only company pushingdevelopment of color TV.

Through the years there was gradual increase in colorprograms .

Today all programs are in color only. some televisionsboast a color range of 16 million colors.


13/31

No one can deny that color adds important

dimension to television communication.

It gives more real experience than black-and-whiteTV.

Today there is color television everywhere ,it hasbecome rare to see a black-and-white television.

It is heading to greater developments like LCD, LED,etc.


14/31

DBSDBS

Direct broadcast satellite (DBS) is aterm used to refer to satellitetelevision broadcasts intended for

home reception, also referred to morebroadly as direct-to-home signals.

The expressiondirect-to-home

or DTHwas, initially, meant to distinguish thetransmissions directly intended forhome viewers from cable television.


15/31

In 1976, Home Box Office (HBO) made historyby initiating satellite delivery ofprogramming to cable with theheavyweight boxing match know as The

Thriller From Manila

Also in 1976, as a result of private

experiments with video transmission fromcommunications satellites, the first

consumer Direct To Home (DTH) SatelliteSystem was created in a most unusualplace in the garage of Stanford UniversityProfessor and former NASA scientist

Emeritus H. Taylor Howard.


16/31

The first commercial direct-broadcastsatellite service in the United Kingdom,

Sky Television, was launched in 1989and used the newly launched Astrasatellite, providing 4 analogue TVchannels.

1998, following the launch of severalmore satellites to Astra's east

position, the number of channels hadincreased to around 60.


17/31

System sales soared as hardware pricesfell, and the idea of a practical DBSsystem was beginning to take shape.

The advantages to consumers wereabounding! There were many

satellites used by programmers, andconsumers could get programmingfrom almost all of them.

And because their programming camefrom multiple sources, it was often20-30% cheaper than cable.


18/31

A number of companies provide DBSand DTH service throughout the

world. In the United States, DirecTVand EchoStar are the main vendors.

DBS TV is also favored by urban andsuburban subscribers who are notsatisfied with the quality or quantityof TV programming available on

conventional cable.


19/31

And the quality was exceptional! That wasbecause the signal was first generation that is, directly from the programmers to

their homes providing a far superiorpicture and sound quality.

As with most new technological

advancements, the cost to the everydayconsumer was very high.

As the price came down, more peoplelooked to the multiple-channelcapabilities of satellite TV as analternative to cable.


20/31

Several cable programming providerslobbied the government, whichsubsequently introduced the 1984Cable Act, allowing them to encrypt(convert into code) their satellitefeeds. Scrambling systems were

developed so their signals were nolonger broadcast in the clear foreveryone with a satellite dish to pickup without any payment to the

program developers.


21/31

The first immediate result of the CableAct was that the satellite salesindustry dramatically dropped. Theother immediate effect was theemergence of a new threat to theindustry satellite signal theft.


22/31

HD revolution

Television is now undergoing the greatestchange since color. High Definition is nowpoised for the major breakthrough.

The implications of this revolution will affectus all.

The quality of the pictures and audio from the

HD gadgets are staggering.


23/31


24/31

NON HD Vs HDNON HD Vs HD


25/31

In the past few years few companies havebeen laying fiber optic cable that will

carry HD signals to homes across thenation.

Not only does HD produce the same quality

as DigiBeta, but it can even provide betterimages than film.

However, eventually all theatrical productswill be beamed down from satellites.


26/31

Individual filmmakers, who shoot theirfeatures on HD, will be able to findgroups of virtual distributors, who canbook and show their films in theatres.

Even the phone companies will be getting

into the mix, offering streamingtelevision in HD to cell phone-likedevices.

The Internet will become even moreubiquitous, showing streaming HD video.Commerce solutions that will pay the

filmmakers for their work will arrive.


27/31

Acquiring a high definition TV set is onlythe first step to enjoying high definition

TV programming though, because thenext step is to get the programmingitself in sufficient quality, so that it maybe enjoyed to its fullest.

Satellite TV programming is the onlyservice where you are going to find thelarge quantity of high definition channels

that you need to have a completeselection in your viewing repertoire andthis is due to a few reasons.


28/31

Satellite TV service provider have toadhere to a far more stringent standardbecause they have to continuallycompete with cable and standard serviceas well as entertainment options such asDVDs.

The cost effectiveness of HD breaks downthe monetary barriers that used to keep

young, unknown directors and producersfrom seeing their ideas and creationsmake it to the big screen


29/31

HD recording is digital, it is capable ofbeing transferred to any future

medium without loss of quality.

Hence it will offer great quality evenwhen it is copied and the quality will

not deteriorate with time or becauseof using it many times.

There are still lot more breakthroughswhich we can expect from the HDfield.


30/31

Events such as the World Cup soccer matchesonly illustrate the power of TV to unite theglobe in a single information network. TV haschanged the way people learn of the worldaround them.

It has helped to spread news and ideas, evenculture and values, from one land to another,effortlessly flowing over the political andgeographic boundaries that once stemmedsuch tides.


31/31

A.K.DIVAKAR

SRI VIDHYATHEN MOZHI

THANK YOUTHANK YOU

diva assessment 2 dom1

Documents