BEAM-INDEX LINE-SCREEN TELEVISION DISPLAY SYSTEMS

    公开(公告)号:CA1135428A

    公开(公告)日:1982-11-09

    申请号:CA390823

    申请日:1981-11-24

    Inventor: GOODMAN DAVID M

    Abstract: Beam-index line-screen television display systems are disclosed for generating multi-color images throughout the size range from small direct view cathode ray tubes to projection type wall screen configurations. The image in the small screen display is generated by a scanning electron beam whereas the image generated in the large screen configuration is developed by a scanning optical beam. In both cases the excitation of the image producing target screen is synchronized by beam-indexing features which utilize optical index signals transmitted across the target screen.

    ENERGY-EFFICIENT BEAM-INDEX DISPLAYS WITH PROGRAMMABLE POWER SUPPLIES

    公开(公告)号:CA1140270A

    公开(公告)日:1983-01-25

    申请号:CA361040

    申请日:1980-09-25

    Inventor: GOODMAN DAVID M

    Abstract: Programmable power supplies are made responsive to beam-index and timing signals in order to automatically control the size and position of the display on a cathode ray tube. The high voltage power supply is also made programmable, responsive to video signal content, to reduce the energy stored in the high voltage circuits. Savings in energy consumption are also obtained by efficiently modulating the target screen of a beam-index type color cathode ray tube. Energy lost at the target screen is less than 10% compared to approximately 70% for a conventional color tube, an improvement factor of 7:1 or more.

    BEAM-INDEX LINE-SCREEN TELEVISION DISPLAY SYSTEMS

    公开(公告)号:CA1115324A

    公开(公告)日:1981-12-29

    申请号:CA349934

    申请日:1980-04-15

    Inventor: GOODMAN DAVID M

    Abstract: Beam-index line-screen television display systems are disclosed for generating multi-color images throughout the size range from small direct view cathode ray tubes to projection type wall screen configurations. The image in the small screen display is generated by a scanning electron beam whereas the image generated in the large screen configuration is developed by a scanning optical beam. In both cases the excitation of the image producing target screen is synchronized by beam-indexing features which utilize optical index signals transmitted across the target screen.

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