Television is a telecommunication medium for transmitting moving images and sound. It was modeled after radio broadcasting systems developed in the 1920s. Early mechanical fax machines transmitted the first electrically sent images in the late 19th century. While television became more familiar at the 1939 World's Fair, commercial television programming did not begin in the U.S. until 1948. China Central Television (CCTV) is China's predominant state television broadcaster with 22 channels accessible to over 1 billion viewers. CCTV began broadcasting in Beijing in 1958 and launched additional channels in the 1960s, converting to color broadcasting by 1977.

1. Television
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Lu Yanan

2. Definition
Television (TV) is a telecommunication medium for
transmitting and receiving moving images that can
be monochrome (black-and-white) or colored, with
or without accompanying sound. "Television" may
also refer specifically to a television set, television
programming, or television transmission.

3. closed-circuit television (CCTV) are in use,
the most common usage of the medium is for
broadcast television, which was modeled on
the existing radio broadcasting systems
developed in the 1920s, and uses high-
powered radio-frequency transmitters to
broadcast the television signal to individual
TV receivers.

4. History
The first images transmitted electrically were sent by early
mechanical fax machines, including the pantelegraph, developed
in the late nineteenth century. The concept of electrically
powered transmission of television images in motion was first
sketched in 1878 as the telephonoscope, shortly after the
invention of the telephone. At the time, it was imagined by early
science fiction authors, that someday that light could be
transmitted over copper wires, as sounds were.
Braun HF 1 television receiver, Germany, 1958→

5. Although television became more familiar in the United States
with the general public at the 1939 World's Fair, the outbreak of
World War II prevented it from being manufactured on a large
scale until after the end of the war. True regular commercial
television network programming did not begin in the U.S. until
1948. During that year, legendary conductor Arturo Toscanini
made his first of ten TV appearances conducting the NBC
Symphony Orchestra,[26] and Texaco Star Theater, starring
comedian Milton Berle, became television's first gigantic hit
show.[27] Since the 1950s, television has been the main medium
for molding public opinion.[1]
Amateur television (ham TV or ATV) was developed for non-
commercial experimentation, pleasure and public service events
by amateur radio operators. Ham TV stations were on the air in
many cities before commercial TV stations came on the air.[28]
In 2012, it was reported that television was growing into a larger
component of major media companies' revenues than film.

6. Television Introduction By Country

7. China

8. China CCTV
China Central Television or Chinese Central Television,
commonly abbreviated as CCTV, is the predominant
state television broadcaster in mainland China. CCTV
has a network of 22 channels broadcasting different
programmes and is accessible to more than one billion
viewers.[1] Most of its programmes are a mixture of
documentary, comedy, entertainment, and drama, the
majority of which consists of Chinese soap operas and
entertainment

9. History
CCTV Peking (Beijing) Television ( 北 京 电 视 台 ) broadcast its
first program on 2 September 1958. Due to increasing demands,
it soon launched its second channel in the 1960s and third
channel in the late of 1960s. Starting from 1 May 1973, Peking
Television began broadcasting experimentally in colour on its
second channel every Tuesday, Thursday, and Saturday using
the PAL-D system, and fully converted to colour broadcasting by
1977. The network changed its name to CCTV on 1 May 1978.
Today, CCTV has 22 national channels, all of them airing 24
hours a day.

10. Reference
http://en.wikipedia.org/wiki/Television
http://en.wikipedia.org/wiki/List_of_countries_by_n
umber_of_television_broadcast_stations
http://en.wikipedia.org/wiki/China_Central_Televisi
on