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Television Choices

Explore the world of television technology from flat panels to projection TVs. Learn about different types, sizes, and technologies to make an informed decision. Discover pros and cons of plasma, LCD, DLP, front projection, and more.

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Television Choices

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  1. Television Choices April 2006

  2. Types of TVs • Flat Panel • Plasma • LCD • Projection- front and rear • DLP • LCD • LCoS • Tube

  3. 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.

  4. 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"

  5. 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"

  6. 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

  7. RPTV

  8. 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,

  9. Front Projection TV

  10. 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.

  11. 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™.

  12. 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.

  13. Conventional TV

  14. 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

  15. 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.

  16. Aspect ratio — 4:3 vs. 16:9 • conventional squarish 4:3 aspect-ratio - widescreen (most HDTV) 16:9 aspect ratio. • 4:3 HDTV-ready TVs are required to include a special viewing mode that displays widescreen material like HDTV broadcasts and anamorphic DVDs in a 16:9 "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. • 16:9 TVs can display 4:3 programs in a central 4:3 window with black or gray bars filling out the screen's width on the sides, also usually include several viewing modes designed to make 4:3 material fill the screen's width by magnifying and/or stretching the image.

  17. 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.

  18. Connections

  19. Connections

  20. Hook-ups • TV built in A/V inputs- usually limited in number and types

  21. 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.

  22. Hook-ups • External switching devices/ RF converters

  23. 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

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