NTSC
NTSC, along with PAL, is one of the two dominant interlaced scan systems in use in the world today. In interlaced scanning, the lines that make up a video image are displayed in alternate order (rows 1, 3, 5 etc. are scanned followed by the set of even lines). NTSC is based on a 525-line system consisting of 60 fields/30 frames-per-second at 60Hz. It is the official analog television standard in North America, some parts of Central and South America, Japan, The Philippines, Taiwan, and Korea (the map below illustrates NTSC adoption in green).
Adopted by the National Television System Committee in the US, the first NTSC standard was developed in 1941 as a black-and-white video transmission system and had no provisions for color. In 1953 a second standard was issued allowing color broadcasting.
All full-power over-the-air NTSC transmissions will be replaced with the digital ATSC television standard by February 17, 2009 in the United States, and August 31, 2011 in Canada. Find out more about the digital TV cutover.

Technology news All News
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01/09/09 5:56pm Home A/V DTV transition threatened by converter coupon program woes
Without more funding, the federal program issuing converter box coupons can't meet the demand, with the crossover coming in just weeks. dig deeper
Around the web: broadcastingcable.com
, latimes.com
, Yahoo! News: Technology News
, voices.washingtonpost.com (7 comments)
, news.google.com 
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11/20/08 3:05pm Computing Acer H223HQbmid and H243Hbmid 1080p monitors hit Japan
Acer is now offering a new pair of 1080p LCD screens, the 21.5-inch H223HQbmid and 24-inch H243Hbmid. The 1920 x 1080 screens… dig deeper
Around the web: Akihabaranews.com
, Ubergizmo
, SlashGear 
Profile pages: HDMI, 1080p, LCD, Contrast ratio, Dolby, Acer H223HQbmid, Acer H243Hbmid, NTSC
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11/13/08 11:39am Home A/V Dish Network DTVPal DVR set for December release
Dish Network has set a December release date for its DVRPal DVR, a system for recording free over-the-air HDTV broadcasts. The… dig deeper
Around the web: Ubergizmo
, SlashGear
, Crave: The gadget blog
, BetaNews.Com 
Profile pages: HDMI, Component, DVR, ATSC, NTSC, DISH Network
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09/11/08 2:59pm Home A/V Mitsubishi puts $7,000 pricetag on unique LaserVue TV
Shipping later this month, the 65-inch set uses lasers to project an image onto the screen. dig deeper
Profile pages: Mitsubishi, NTSC
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09/10/08 11:01am Computing Sony reveals 18.4-inch widescreen VAIO powerhouse
Premium version of the new AW-series features a Blu-ray burner, discrete graphics, and dual solid state drives. dig deeper
Profile pages: Sony, Sony Vaio, ATSC, NTSC, Sony VAIO VGN-AW180Y/Q
3D TV coming to Best Buy this week