Presentation on theme: "Television Technology By Sean Cullinan Van Ness North Unit 607."— Presentation transcript:
Television Technology By Sean Cullinan Van Ness North Unit 607
Who is Sean Cullinan? BA in Television Production from Salisbury University Newscast Director for WMDT-TV (ABC) in Salisbury, MD Worked with the Associated Press for last 5 years on TV newsroom products Resident of Unit 607 since April 2006 Owned an HDTV for 4 years
Topics We Will Cover What happens in February 2009? Explaining TV Formats Types of HDTVs available Shopping for for an HDTV I have my HDTV, now what? Question and Answer Session
Goodbye analog in 2009 February 2009 FCC mandates that broadcasters shut down their analog channels The switch will allow the same number of channels but will consume much less bandwidth. Digital Television provides a better picture and allows for High Definition Images.
Who will be affected? Not cable subscribers! Not Satellite subscribers! Only those who receive television programming Over the Air (OTA) via the VNNC Master Antenna or rabbit ears.
What will I do if I use OTA? Get a set top Digital TV Converter box – Government providing a $40 subsidy (up to 2 per household) to convert Digital TV signals to Analog so that your old TV will work! Get Cable Service By a new TV with a Digital TV Tuner – VNNC is looking at upgrading the Master Antenna to receive and distribute digital signals. Will work with new TV or converter.
Traditional TV Format TV Resolution measured by number of horizontal scan lines displayed A standard definition US TV image consists of 480 horizontal scan lines drawn in an alternating fashion known as interlacing
New TV Formats Progressive Scan draws the entire image in order instead of interlacing. 480P Enhanced Definition TV 720P, 1080I and 1080P High Definition TV
What does HDTV Get me? More scan lines means a much sharper picture HDTV allows for larger screen sizes…with more lines there is less stretching as the screen gets larger Almost all HDTVs are now widescreen which gives a more cinematic experience.
Traditional Picture Tube – Good picture quality – Size limited to about 40 – Burn in not a big problem – Bulky and considered unattractive due to the depth of the television – Generally lower cost than other types – Usually a max resolution of 1080i – Not energy efficient
Rear Projection Television – Uses traditional picture tube – Projects Image to achieve up to 60 of screen size – Can be prone to burn in – Narrow viewing area, very large footprint – Can be a good value if you have the space – Generally a max resolution of 1080i – Not energy efficient
DLP or Microdisplays – Projection Technology – Brighter than traditional RPTV – Smaller footprint but not flat – Wider viewing angle that RPTVs – More expensive than RPTV but cheaper than flat panels at a given size – Available in 720p or 1080p
LCD Displays – Can be expensive but are getting more affordable – Extremely Bright Picture – Size limited, generally to 46 – As thin as 3 and wall mountable – Not able to reproduce deep blacks – Maximum resolution of 720P or 1080P depending on how much you spend – Most energy efficient – Check viewing angles..can be limited on some sets
Plasma Displays – Allow for very large screen sizes up to 70 and larger – Bright Picture – 4 footprint, wall mountable – Burn in less of an issue in new models – Like LCD, not great at displaying blacks – Maximum resolution of 720P or 1080P depending on how much you spend
Shopping For a New TV
Shopping for a new TV – What type of set do you need? Screen size How much space do you have for it? Do you want to mount it on a wall? Are you going to use the TV for sound or do you have a home theater? How many peripherals do you plan on hooking up to it? How do you get your TV signal? How High of a definition do you need?
Important Features Inputs!! – HDMI provides a digital connection for optimum HD picture and sound quality. Must support HDCP copy protection! – Component inputs are analog but use 3 separate cables to deliver an HD picture. – Composite and Svideo Inputs are not HD capable Tuners – Will you need a tuner to receive Over the Air TV? – If so make sure you get a digital tuner for 2/2009 – Multiple tuners are useful for Picture In Picture – Cablecard remove the requirement to have cablebox
Reading the ad
Great Reviews In print – Consumer Reports – Home theater magazine Online – – – 1.html?tag=dir 1.html?tag=dir – Google (http://www.google.com) a set before you buy it!http://www.google.com
Cables…beware! Stores make a ton of money selling cables HDMI Cables provide a digital connection…digital means that signal loss is not a huge problem
Installing Your TV – Wall mounting an LCD isnt that hard… Kits are available at all retailers I mounted mine with 2 screws, washers, nuts and winged drywall anchors to provide back pressure against the plaster walls. More professional installers will run cables inside walls
Hooking up Equipment – In order to get Progressive Scan you MUST use Component or Digital type connectors
Receiving HDTV – Over The Air via built in digital tuner UHF antenna will work, many now marked for HDTV reception but any UHF antenna can work. – Comcast Offers all local channels plus Discovery, National Geographic, TNT, Premium Movie channels and more in HDTV. Must have HDTV box which costs extra – Digital Satellite – In the future the VNNC Master Antenna
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