Television Choices

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Television Choices

• April 2006

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Types of TVs

• Flat Panel
• Plasma
• LCD
• Projection- front and rear
• DLP
• LCD
• LCoS
• Tube

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Flat Panel

• create bright, crisp images without using
  traditional picture tubes.
• super-slim, wall-mountable TVs use either plasma
  or LCD (Liquid Crystal Display) panels.
• Size Up to 46" for LCD up to 61" for plasma.

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Plasma

• Pros screen's phosphor coating creates lifelike
  color that is closest to conventional tube TVs
• Cons vulnerable to burn-in although it's less of
  an issue for newer models
• Size 37"-61"

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LCD

• Pros panels weigh less than plasma and use less
  energy burn-in not an issue
• Cons picture slightly less natural than top
  plasmas
• Size 13"-46"

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Projection- Rear (RPTV)

• clear, sharp pictures that look best when viewed
  straight on, from a seated position, looks dimmer
  if you're viewing from the side, or standing up.
• take up more space than direct-view TVs, and
  their larger screens require greater viewing
  distance for optimum results.
• Size 42" to 70".
• Technology DLP, LCD, or LCoS technology TVs have
  cabinets that are shallow and lightweight
  compared to conventional big-screen models

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RPTV
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Front-projection

• two-piece system projector and screen.
• heavy, expensive CRT-based units that require
  professional installation and maintenance.
• compact, lightweight digital home theater
  projectors.
• big, bright images create more emotional impact
  than any other display type.
• Size 40" to 300".
• Technology DLP, LCD, and LCoS projectors.
  perform best in reduced light or darkness,

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Front Projection TV
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DLP(Digital Light Processing)

• developed by Texas Instruments, based on their
  Digital Micromirror Device (DMD) microchip.
• Each DMD chip has hundreds of thousands of tiny
  swiveling mirrors which are used to create the
  image.
• DLP technology is used in both front- and
  rear-projection systems.

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LCoS (Liquid Crystal on Silicon)

• sandwiches a layer of liquid crystal between a
  cover glass and a highly reflective, mirror-like
  surface patterned with pixels that sits on top of
  a silicon chip.
• layers form a microdisplay that can be used in
  rear-projection and front-projection TVs.
• Manufacturers use different names for their
  LCoS-based technologies. JVC uses D-ILA or
  HD-ILA, while Sony uses SXRD.

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Tube (direct-view CRT)

• (cathode-ray tube) TVs are what most of us watch.
  
• sharp, bright images provide a vivid viewing
  experience in virtually all rooms and lighting
  conditions.
• Size Up to 36".
• Technology Built around a single large CRT
  ("picture tube") a specialized vacuum tube in
  which images are created when an electron beam
  scans back and forth across the back side of a
  phosphor-coated screen.

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Conventional TV

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Screen resolution

• number of horizontal pixels times the number of
  vertical pixels
• SDTV- 640 x 480 pixels
• HDTV- 1280 x 720 or 1920 x 1080 for
• EDTV (Enhanced-Definition)852 x 480

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Resolution

• HDTV - film-quality picture offers detail,
  dimensionality, and rich, vibrant colors that the
  60-year-old analog NTSC TV format can't begin to
  match, include upconversion circuitry to give
  non-HD signals (DVD, antenna/cable, digital
  satellite, etc.) a cleaner, smoother look.
• SDTV digital format has better picture quality
  than existing broadcast and cable service.

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Aspect ratio 43 vs. 169

• conventional squarish 43 aspect-ratio -
  widescreen (most HDTV) 169 aspect ratio.
• 43 HDTV-ready TVs are required to include a
  special viewing mode that displays widescreen
  material like HDTV broadcasts and anamorphic DVDs
  in a 169 "window" with black bars above and
  below the picture.
• analog TV broadcasts are scheduled to end in
  2009, and video programs will continue to shift
  to widescreen formats.
• 169 TVs can display 43 programs in a central
  43 window with black or gray bars filling out
  the screen's width on the sides, also usually
  include several viewing modes designed to make
  43 material fill the screen's width by
  magnifying and/or stretching the image.

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TV sound

• TV part of a home theater, use A/V receiver and
  speakers to process and deliver video sound
• built-in amplifier power output varies from 2 to
  20 watts per channel. Higher power cleaner,
  more realistic sound, and louder levels without
  distortion.
• RPTVs have more room in their cabinets for
  speakers ( usually 15 watts per channel), sound
  quality good, still doesn't compare to even a
  budget-priced receiver and speakers.
• HDTV sets (those with some type of built-in HD
  tuner) include a digital output, through which
  they can send a crystal-clear Dolby Digital sound
  that is standard on HDTV broadcasts via a
  single-cable digital connection to your A/V
  receiver.

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Connections
Video input type Connection Commonly used for
coaxial (RF) threaded F-type carries audio and video signal antenna, cable TV, VCR
composite video single RCA carries video signal VHS VCR, DBS, DVD, VHS and 8mm camcorders, video game
S-video 4-pin DIN-type- carries video signal Super VHS VCR, DVD, MiniDV and Hi8 camcorders
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Connections
Video input type Connection Commonly used for
component video RCA x 3 splits DVD, HDTV tuner (broadcast, cable or satellite)
DVI multi-pin HDTV tuner, computer, DVD
HDMI multi-pin HDTV tuner, DVD, HD DVR, HD DVD/Blu-ray
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Hook-ups

• TV built in A/V inputs- usually limited in number
  and types

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Hook-ups

• A/V home theater receivers provide multiple video
  inputs and outputs to enable video switching,
  which makes it easy to choose from among your
  various video sources.

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Hook-ups

• External switching devices/ RF converters

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Components

• Antenna, satellite TV receiver or cable box
• DVD player and VCR
• video game system(s)
• DVR/TiVo hard disk recorder
• camcorder-preferably front-panel A/V inputs