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    Elec.20 $ Revision $

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    ahmad ali2

    Posts : 1
    Join date : 2010-02-28

    Elec.20 $ Revision $

    Post  ahmad ali2 on Sun Feb 28, 2010 8:32 am



    Unit 20

    Revision

    1-What is the difference between the HDTV and
    the existing TV?

    -SB. Page 109

    2- What do the Japanese call their modern TV?
    -The Japanese called their system Hi-vision.

    3-What are the new names for the modern TV?
    -They are HDTV, Hi-vision, and ATV.

    4-What is the aim of this modern technology race?
    - To produce new generations of TV sets .



    *********
    Television pictures :

    1-How is a TV picture built ?
    -By moving a spot of light across and down screen
    In a raster pattern.

    2-What does line scan signal do?
    -It controls the movement of the spot across the screen is


    3-What dose the field scan signal do ?
    -It controls the movement of the spot down the screen is

    4- What dose fly back mean ?
    -The rapid movement back to the a starting
    position.

    5-How is movement of the spot down screen
    controlled?

    -The movement of the spot down the screen is
    controlled by the field scan signal.


    Vocabulary and Terms :

    1-optimal
    2-provide
    3-sets
    4-screen
    5-superb
    6-ATV:advanced television
    7-certain features
    8-quality
    9-likely
    10-position
    11-rapid
    12-flyback
    13-minimum
    14-smaller
    15-field sync pulse
    16-controlled
    17-increased
    18-expanded
    19-HDTV

    Re: Elec.20 $ Revision $

    Post  !~<% Sami ALessa 141 %>~ on Sun Feb 28, 2010 6:35 pm

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