The sampling device which removes the spatial connection which with the main picture indicates the secondary picture, in the secondary picture

摘要

(57) Abstract The device which synthesizes the secondary picture and the main picture, includes with main picture video signal source and the sample source which displays the secondary picture video signal which possesses continual field. Five point shape sub samplers, are connected by secondary picture sample source, the 1st sample pattern where the sample is pulled out in the 1st set horizontal point, or with each pattern of the 2nd sample pattern where the sample is pulled out in the 2nd set horizontal point of 1st set center, responding to all control signals, subsampling it does the secondary picture sample. The signal synthetic vessel, is connected by five point shape sub samplers and main picture signal source, the main picture signal and synthesizes the signal which displays the secondary picture sample which five point shape subsamplings is done generates the signal which displays the picture where the main picture and the secondary picture are synthesized. The control circuit, generating five point shape subsampling control signals, five point shape sub samplers, in the beginning each secondary picture video signal field pull out the sample with one sample pattern, after the switching time which was calculated the sample is pulled out with other one sample pattern, the secondary picture sample which five point shape subsamplings is done is pulled out with all same sample patterns in the picture which is synthesized.