Television

TechnologyJake Lawrence

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1928

1928: W3XK, the first American

TV station, begins broadcasting

from suburban Washington,

D.C. The station was an outgrowth

of the work done by Chartles

Francis Jenkins. His receiving

sets relied on a 48-line image

projected onto a 6-inch-square

mirror to create the picture,

rather than using electronics,

the technology that determined

the future of television.

1929

Semivisor TV from 1929.

1948

Possibly the first was the Ideal

Home Exhibition which opened on

March 2nd, amogst whose exhibits

was the HMV1901 combined TV and

radiogram. Up to this point all televisions

required an A.C. mains supply since

a transformer was required not only

to provide the very high EHT

voltage required by the CRT but

also to provide a supply high

enough to enable the scanning coils

to be driven quickly enough using

the valves then available (valves

specifically designed for TV use

were yet to appear in any number)

Few people owned them as they

were priced at 600 dollars.

1950’s

Still broadcatsed in black and white, although the screen size was increases, and the 1950’s saw a

large increase in the

amount of televised shows.

1957

The colour television

started to sell in larger

quantities, although the first colour broadcast was in 1953.A Larger screen with

more dials and a more

stylish look.

1958

Arguably one of the most iconic television

sets in the 1950’s. Very large screen with

a bilt in stand.Many amercian families owned one of

these sets.

1972 Increasingly better

quality television with

this new zenith model

television.Tvs were getting more

popular.

1979

The introduction of electronic channel tuning.The video tape were

coming ever more popular with the introduction of JVC’s

VHS technology.

1990’s

By the start of the decade

900 million tv sets were

owned world wide. Nicam

stereo surround sound

became available as well

as programs broadcasted

in widescreen format.

DvD video format became

popular.

2012

By the start of the millena, tv

sets were being made in

plasma screens, flat screens

and in HD. Tvs range from 19 inch flat

screen all the way up to the 90

inch size, with all sizes in

between. Blu ray dvd’s and surround

sound stereos are in almost

everyone’s homes.