| 摘要 |
PURPOSE: A method and an apparatus for control of an auxiliary video information display are provided to secure a controlled display of video information pertaining to a television program signal in response to a parameter of the television program signal. CONSTITUTION: A video signal receiver is operated to control display of video information. A television signal receiver(12) includes a reference level setter, a signal comparator(150), and a video signal modifier. The reference level setter is operated to set a reference level. The signal comparator is operated to compare a signal level of an audio program portion of a television signal to the reference level. The video signal modifier is operated to modify a video signal representing a video program portion of the television signal in response to the audio program portion comparison.
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