| 摘要 |
The system for viewing color video "automatically" enables and disables a color killer circuit (monochrome/color mode) so that the color video may be viewed in monochrome. Enabling and disabling the color killer circuit for the current system may be accomplished, in part, by dynamic operation of the television. In operation the user may select one of three methods of activating the monochrome/color mode to enable the color killer circuit. First, the monochrome/color mode may be activated for one or more preselected channels. Second, the monochrome/color mode may be activated for all channels. Third, the monochrome/color mode may be activated if a control signal is included within the television broadcast indicating that the particular video being received is a colorized monochrome video. To deactivate the monochrome/color mode may be accomplished by any of four deactivation methods that disable the color killer circuit. First, the monochrome/color mode may be deactivated by turning the television off and on. Second, the monochrome/color mode may be deactivated by the user manually turning it off. Third, the monochrome/color mode may be deactivated by the absence of the control signal. Fourth, the monochrome/color mode may be deactivated by selecting a channel that is not selected to be displayed in monochrome.
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