HDTV, or high-definition television, offers greatly improved picture quality compared to standard television through higher resolution and improved color. It displays either 720 or 1080 interlaced lines of resolution. HDTV provides digital surround sound and requires new production and transmission equipment. While mainly used by companies with large marketing budgets and movie studios, HDTV programming and compatible devices will likely become more widespread and affordable as the technology advances.

1. HDTV
(HIGH DEFINITION TELEVISION)

2. WHY HIGH DEFINITION TV?
 HDTV-is one of the most talked about topics today
 It has twice the vertical and horizontal resolution of
standard television
 Thereby producing a picture with six times the number
of picture element
 This makes HDTV’s picture quality ten times better than
regular television
 HDTV-produces a much-improved color rendition
compared to present television systems.

3. 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
sound
This requires new production and transmission equipment at
the HDTV stations.

4. HDTV TYPES
 HDTV or Digital-ready TV
 16:9 aspect ratio (width:height)
 Displays:
 720-line progressive scan signal OR
 1080-line interlaced signal

5. INTERLACED
 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

6. PROGRESSIVE
 Lines of picture transmitted consecutively one line after
another rather than 2 overlapping fields
 Like computer monitor

7. 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

8. CHANNELS THAT USE IT

9. VIDEO RESOLUTIONS

10. SOURCES FOR HDTV
 Digital cable
 Video player with DVI, HDMI input
 Digital satellite receivers
 Video game systems with HDMI input XBOX 360 and
Playstation 3
 Windows Media High Definition
 Video imaging processors

11. ASPECT RATIOS

12. CONCLUSION
• As NTSC retires, HDTV programming, products, and
production services will continue to grow
exponentially.
• 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.