CATV
Channel Device: MP1721 Multi- Pictures Synthesizer
17
Picture / 21 Picture Product
The CATV channel is the newest current of cable TV.
The CATV provides
CATV services for the cable TV audience. Each household all can
quickly inquire to oneself that is interested in the program. They
don’t take the remote control and continually choose channel to
find satisfied programs.
Innovations:
Contrast to the nine pictures, the CATV channel increase
functions which broadcast television advertisements and other
television programs at the same time. Their forms are novel,
artistic, and the functions are practical.
Advertisements:
while enjoying CATV service, the users also broadcast the
television advertisement contents. Such advertisements
effect good and lively, compared to the
advertisement that solely broadcast by the audience is easily
accepted.
Income:
Speaking of the wired television station, income may foresee.
Because the CATV channel program will
certainly to have the high viewing ratio, therefore the
advertisement clienteles’ satisfactions can high, and the
advertisement revenue is considerable. While providing
the CATV service for the audiences, they create the
social efficiency and the economic efficiency.
The MP1721 multi- pictures synthesizer 21 pictures /17 pictures
products use the most advanced digital video compression technology
in the world. They synthesize 21 (or 17) channel
video signal to a channel.
21 (or17) channel
input video signal, a channel
for the advertisement
programs that independently broadcast, other 20 (or 17) channel
for
other programs which broadcast by the cable TV.
The synthesis form are:
17
pictures: Evenly dividing the entire screen into 25 (5×5), the
right top corner of them take 9 (3×3) spaces displaying a big
picture, and the big picture uses in broadcasting the advertisement
program. The left side of the big picture and under 16 use in
displaying 16 sets of wired television stations which broadcast
different program.
21
pictures: Evenly divides the entire screen into 36 (6×6), the right
top corner of them takes 16 (4×4) spaces displaying a big picture,
and the big picture uses in broadcasting the advertisement program.
The left side of the big picture and under 20 use in displaying 20
sets of wired television stations which broadcast different program.
While
broadcasting the program total are more than 20 (or 16), they may
use turns the page the mode. every 20 (or 16) sets of programs is a
page, a page of page takes turns to display in the small pictures,
that is called turning page. They are may turn 8 pages most ,
displaying 80 (or64) sets of programs.
Necessary
20 (or 16) channel
adjacent channel and entire channel demodulator,
which can completely turn and demodulate 80 (or 64) sets of programs
all pages. They demodulates the video signal taking the MP1721
multi- pictures synthesizer 20 (or 16) channel
small picture input
signal.
Finally, 21(or17) the picture synthesis video signal which the
MP1721 multi- pictures synthesizer outputs and the advertisement
programs audio signal modulate, taking a special channel, as CATV channel broadcasting.
The
comparison of 17 pictures and 21 pictures
17
pictures
Superiority:
The peripheral small picture relatively is big (1/25 = 0.04). The
functions of CATV to say, they may le television viewers look
clearly;
Inferiority:
The big picture relatively is small (9/25 = 0.36). The program
quantities of CATV are less than 21 pictures.
21
pictures
Superiority:
Big picture relatively is big (16/36 = 0.44), the effect of
advertisement broadcast well. The CATV channel capacity is
big, which most have 80
sets of programs;
Inferiority: The peripheral small picture relatively is small (1/36
=0.028).
Application
methods
The CATV channel in the application process, the content which
among the big picture primarily broadcast advertisements, also may
broadcast other programs, such as the telephone requesting a song,
the charts information of the stocks, the entertainment program, the
news notices and so on. So the form is quite lively and novel, and
the content is also more practical in the basic functions of CATV. The general television viewer easily accepts it, and effect can
compared to solely broadcast advertisements.
Function
characteristic
s
*
Outside synchronized phase-lock function;
*
Each page superimposition marking characters, clearly distinguishing
various channels program;
*
The intelligence turning the page mode, displaying more than 80 (or
64) sets of channel programs;
*
The switch outputs the any way signal of 21 (or 17) ways video
input, and the monitoring function;
*
Through serial port with necessary radio frequency demodulator
connecting, the operation control to be relaxed quickly;
* Using the advanced technology, and the image is clear and stable,
the quality is reliable.
Technical
specifications
*
Power input: alternating current 220 V±10 %;
*
Case size: 3 U standard top carriage case;
*
Working conditions temperature5 ℃ ~ 35 ℃;
*
Electromagnetic compatibility: Conforms to the national standard;
*
Radio input: >= 80 dB;
*
Digital quantification: 8 bit;
*
Video input: 21 (or 17) channel standard video signal (75 Ω, 1Vp-p);
*
Datum input: 1 channel standard video signal (75 Ω, 1Vp-p);
*
Synthesis video output: 2 channel standard video signal (75 Ω, 1Vp-p);
*
One channel
may switch and display the input the any channel
of signal;
* Another channel
all displays 21/17 pictures synthetical signal.
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