发明名称 |
TELEVISION PICTURE AND SOUND SCRAMBLER AND METHOD |
摘要 |
Television signal scrambling is effected by combining moderate level trap-attenuation of the visual carrier frequency with an injected fm-modulated interfering signal to effect, by adjustment of amplitude and fm-modulation levels, satisfactory picture scrambling and overpowering audio distortion in the user's television receiver. |
申请公布号 |
DE3574441(D1) |
申请公布日期 |
1989.12.28 |
申请号 |
DE19853574441 |
申请日期 |
1985.08.07 |
申请人 |
BLONDER TONGUE LABORATORIES INC. |
发明人 |
MISTRY, KANTILAL |
分类号 |
H04K1/00;G06F21/10;H04N7/16;H04N7/167 |
主分类号 |
H04K1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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