Circuit for inserting and separating frequency folding...

Details Circuit for inserting and separating frequency folding... Circuit for inserting and separating frequency folding...

H - Electricity

04

N

H04N 5/91 (2006.01) H04N 9/79 (2006.01) H04N 9/797 (2006.01)

Patent

CA 2052225

In a video recording apparatus, a frequency folding information inserting circuit comprises an E/O field detector for detecting whether the present video signal is of an even number or odd number field, a frequency folding information generator for generating frequency folding information representing the state of frequency folding according to the detected result of the E/O field detector, an adder for adding the folded video signal to the frequency folding information, and a position setter connected between the adder and the frequency folding information generator for supplying the generated frequency folding information to the adder at any arbitrary time. In a video reproducing apparatus, a frequency folding information separating circuit comprises a position detector for detecting the position where frequency folding information is inserted in the reproduced video signal, and a frequency folding information separator for separating the frequency folding information included in the reproduced video signal according to the detected result of the position detector.

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