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Video signal processing method and apparatus therefor for creating a picture-in-picture
Video signal processing method and apparatus therefor for creating a picture-in-picture
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机译:用于创建画中画的视频信号处理方法及其设备
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摘要
A video signal processing method for a picture-in-picture function comprises the steps of sampling a second composite color television signal corresponding to a subscreen by a signal (3 fsc) having a frequency three times the frequency of a chrominance subcarrier (fsc) signal to write the same in a field memory, reading the sampled signal written in the field memory at the frequency of 3 fsc in the ratio of one to N+1 data in the horizontal direction and at intervals of even horizontal lines in the vertical direction and switching the read compressed second composite color television signal and a first composite color television signal corresponding to a main screen in prescribed timing to display the same on a television screen. Color signals of the first and second composite color television signals may be previously made in phase with each other.
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