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Digital TV(One
Segment TV in Japan)
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Mobile Phone System
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Fee
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Free of charge
because of one way communication
Use set top
box for access permission and charge
fixed price monthly
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Charging is
feasible, because of two communications. Mobile phone operator can charge
according to use time, channel, and programs.
Mobile phone
operator receives response from viewers; they can offer better programs by
studying viewer’s response.
Viewers are
positive to pay the fee if mobile phone operators offer satisfactory
programs.
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Program
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The same content as digital TV is
broadcast at home.
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Program matched
to cellular phone user satisfaction
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Feature of
program
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Morning news
before businessmen/ workers goes to work. Variety show seen at intervals of
housework during daytime. Drama/variety/ music in 30-60 minutes seen after businessmen/workers
come home. Program organization matched to daily life
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By using
intervals between work and study, etc. in a short time of each 3-10 minutes.
Economic news for businessmen/workers and new songs and short movies for
young people.
Programs
matched to user's favor and time schedule.
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Broadcasting operator
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TV company different in each region
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Mobile carrier
that covers the whole country
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Digital TV(One Segment TV)
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Broadcasting
by mobile carrier
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Use band
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1/13 in
digital TV band of 5.6MHZ,namely,430KHZ
|
Use band
is decided according to the demand for the number of programs, among CDMA
bands allocated to the mobile carrier.
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Number of
frames
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15 frames. Because the
transmission speed is 200- 300KBPS, 30 frames are difficult.
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30 frames or
more. Visible for speedy program such as soccer games
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Transmission
speed
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200-300KBPS
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Transmission
speed will be up by the technological progress of super the third
generation and the fourth generation.
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Pixel
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QVGA(240X320)
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High
definition is technically feasible
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Screen
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2-2.6inch,
present portable screen size
In case the screen is divided for the image and for data, and the image
screen becomes 1/2.
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The
possibility that the fold screen etc. can be done in the future, then the
size of the screen could be more than 5.2 inch.
One whole screen can be used for the image. Data can be reported by running
telop.
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Image
transmission for cellular user
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TV electric wave
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Electric wave
for cellular phone
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Data
transmission for cellular user
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TV electric wave
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Electric wave
for cellular phone
|
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Data
transmission from cellular user
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Electric wave
for interactive cellular phone
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Electric wave
for interactive cellular phone
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