DESCRABLING SYSTEM OF VCR

摘要

a first tuner for selectively tuning a random broadcasting signal among; a second tuner for selectively tuning another random broadcasting signal; a first switch for selectively switching the outputs of the first and second tuner a descrambler; a second switch for selectively switching the outputs of the first tuner and descrambler; a first signal processor for outputting the sound and video signal by receiving the output of the second switch; a third switch for selectively switching the outputs of the first signal processor and the descrambler; a fourth switch for selectively switching the outputs of the third switch and second tuner; a second signal processor for processing the sound and video signal; a first scramble detector for detecting if there is a scramble by the output of the first tuner; a second scramble detector for detecting if there is the scramble by the output of the second tuner.