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  2. Trapezoidal thread form - Wikipedia

    en.wikipedia.org/wiki/Trapezoidal_thread_form

    The original trapezoidal thread form, and still probably the one most commonly encountered worldwide, with a 29° thread angle, is the Acme thread form (/ ˈ æ k m iː / AK-mee). The Acme thread was developed in 1894 as a profile well suited to power screws that has various advantages over the square thread , [ note 1 ] which had been the form ...

  3. Grand Alliance (HDTV) - Wikipedia

    en.wikipedia.org/wiki/Grand_Alliance_(HDTV)

    A thorough analysis of service area, interference characteristics, transmission robustness and system attributes would be performed to determine the "best approach." In the end, 1080, 720 and 480-line resolutions were implemented at various aspect ratios and frame rates, with progressive and interlaced scanning (the so-called "18 formats ...

  4. File:Acme thread.svg - Wikipedia

    en.wikipedia.org/wiki/File:Acme_thread.svg

    This image is a derivative work of the following images: Image:Thread_Tr.svg licensed with GFDL, GFDL/en . 2008-12-21T03:36:17Z Wizard191 289x97 (18942 Bytes) Minor cleanup ...

  5. Digital television - Wikipedia

    en.wikipedia.org/wiki/Digital_television

    Digital Multimedia Broadcasting (DMB) is a digital radio transmission technology developed in South Korea [4] [5] [6] as part of the national information technology project for sending multimedia such as TV, radio and datacasting to mobile devices such as mobile phones, laptops and GPS navigation systems.

  6. Channel 16 digital TV stations in the United States - Wikipedia

    en.wikipedia.org/wiki/Channel_16_digital_TV...

    K16EK-D in Idalia, Colorado, on virtual channel 4, which rebroadcasts KCNC-TV; K16EM-D in Prineville, etc., Oregon; K16ET-D in Pleasant Valley, Colorado, on virtual channel 4, which rebroadcasts KCNC-TV; K16EV-D in Bullhead City, Arizona; K16EX-D in Clovis, New Mexico; K16FC-D in San Luis Obispo, California; K16FD-D in Battle Mountain, Nevada

  7. List of digital television deployments by country - Wikipedia

    en.wikipedia.org/wiki/List_of_digital_television...

    These are Dish TV (a ZEE TV subsidiary), Tata Sky, Sun Network owned 'Sundirect DTH', Reliance owned BIG TV, Bharti Airtel's DTH Service 'Airtel Digital TV' and the public sector DD Direct Plus. As of 2010, India has the most competitive Direct-broadcast satellite market with seven operators vying for more than 110 million TV homes.

  8. Active Format Description - Wikipedia

    en.wikipedia.org/wiki/Active_Format_Description

    It has also been used by broadcasters to dynamically control how down-conversion equipment formats widescreen 16:9 pictures for 4:3 displays. [2] [3] Standard AFD codes provide information to video devices about where in the coded picture the active video is and also the "protected area" which is the area that needs to be shown. Outside the ...

  9. Thread angle - Wikipedia

    en.wikipedia.org/wiki/Thread_angle

    Diagram of a thread angle. In mechanical engineering, the thread angle of a screw is the included angle between the thread flanks, measured in a plane containing the thread axis. [1] This is a defining factor for the shape of a screw thread. Standard values include: