WHY HIGH DEFINITION TV?
HDTV-is one of the most talked about topics today
It has twice the vertical and horizontal resolution of
Thereby producing a picture with six times the number
of picture element
This makes HDTV’s picture quality ten times better than
HDTV-produces a much-improved color rendition
compared to present television systems.
WHAT IS HDTV
HDTV- is high-resolution digital television with
Dolby Digital surround sound.
HDTV-is the highest digital television there is.
This allows HDTV to have extraordinary images with stunning
This requires new production and transmission equipment at
the HDTV stations.
HDTV or Digital-ready TV
16:9 aspect ratio (width:height)
720-line progressive scan signal OR
1080-line interlaced signal
TV camera captures an image of 480 lines every 1/60th
of a second
Allocated broadcast spectrum isn’t wide enough, so
signal is compressed by discarding 1/2 of the lines
Transmits at 30 frames/sec with 2 fields/frame
Fields alternate every other resolution line
Lines of picture transmitted consecutively one line after
another rather than 2 overlapping fields
Like computer monitor
WHO USES IT?
A Small Group of Marketers :Generally big ad budgets
Subzero :Refrigerator Company
BMW :Has 2 new 3 series spots in HD
Movie Studios :Content resided in 35mm
SOURCES FOR HDTV
Video player with DVI, HDMI input
Digital satellite receivers
Video game systems with HDMI input XBOX 360 and
Windows Media High Definition
Video imaging processors
• As NTSC retires, HDTV programming, products, and
production services will continue to grow
• Move will be cheaper, quicker, and easier as products
and services become more widespread and people grow
accustomed to the new technology.
• HDTV has brought a more cinematic experience into
viewer’s homes and with digital cinema, delivered the
film industry a few of the benefits of television.
However, HDTV still has much lower resolution than
70mm film. It’s a matter of time before some will begin
pressuring for another increase in quality.