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    https://en.wikipedia.org › wiki › Standard-definition_television

    Standard-definition television - Wikipedia

    • Standard-definition television (SDTV; also standard definition or SD) is a television system that uses a resolution that is not considered to be either high or enhanced definition. Standard refers to offering a similar resolution to the analog broadcast systems used when it was introduced. Meer weergeven

    History and characteristics

    SDTV originated from the need for a standard to digitize analog TV (defined in BT.601) and is now used for digital TV … Meer weergeven

    PAL and NTSC

    The two SDTV signal types are 576i (with 576 interlaced lines of resolution, derived from the European-developed PAL and SECAM systems), and 480i (with 480 interlaced lines of resolution, based on the Amer… Meer weergeven

    Pixel aspect ratio

    The pixel aspect ratio is the same for 720- and 704-pixel resolutions because the visible image (be it 4:3 or 16:9) is contained in the center 704 horizontal pixels of the digital frame. In the case of a digital video line h… Meer weergeven

    See also

    • Television portal
    • Digital Audio Broadcasting – Digital radio standard
    • Moving Picture Experts Group – Alliance of working groups for multimedia coding… Meer weergeven

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