发明名称 |
Method of subcarrier multiplication which preserves AM Information in FM systems |
摘要 |
A multiplication circuit for use in an FM television transmitter and receiver is provided. The multiplication circuit includes a limiting circuit for limiting a subcarrier supplied thereto and a dividing circuit coupled to the limiting circuit and dividing the output of the limiting circuit by a predetermined factor. A mixer is coupled to the dividing circuit and mixes the output of the dividing circuit with the subcarrier.
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申请公布号 |
US5257403(A) |
申请公布日期 |
1993.10.26 |
申请号 |
US19910800721 |
申请日期 |
1991.12.03 |
申请人 |
SCIENTIFIC-ATLANTA, INC. |
发明人 |
ROVIRA, LUIS A.;WOMBLE, DAVID P.;WALTER, ALLEN;DENNISON, ROBERT |
分类号 |
H04N7/045;H04N7/08;(IPC1-7):H04B7/00 |
主分类号 |
H04N7/045 |
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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