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3gsdi and CVBS signal

Category: Hardware
Product Number: video

Hi,

I want to merge CVBS and 3G-SDI signals in the same input and use a mux to give to SDI path to equalizer and CVBS to another switch. At a time i will be using either one CVBS OR 3G-SDI. How can i identify the connecting signal is CVBS or 3G-SDI? Is there any specific IC for this!