Video scrambler that operates on baseband signals uses relatively simple delay and inversion circuitry to alter television signal so that is is unrecognizable when picked up on TV monitor. Descrambler that uses essentially same circuit restores signal and allows original video information to be retrieved. Circuits allow only authorized parties to have access to transmitted information.
Video scrambler/descrambler
NASA Tech Briefs ; 3 , 1
1978-06-01
Miscellaneous
No indication
English
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