Video signal encrypting apparatus

Details Video signal encrypting apparatus Video signal encrypting apparatus

H - Electricity

04

N

H04N 7/167 (2006.01) H04N 7/169 (2006.01)

Patent

CA 2121446

A common circuit is used for scrambling and descrambling video signals. A memory stores key data. During scrambling the output of the memory is transmitted to a read address counter through an address generating circuit. Scrambling is effected by executing line rotation from a cut point. Descrambling is effected by the reverse of the aforementioned process.

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