发明名称 |
Transmission system for TV signals on radio links |
摘要 |
A system for transmitting television signals on a radio link. The system includes a transmitter having a modulator for modulating a carrier signal to produce a vestigial sideband amplitude modulated signal for transmission. The modulator includes a first converter for converting the frequency of video signals to an intermediate frequency and a second converter for converting the intermediate frequency of the video signals to a radio frequency. The system further includes a receiver having a demodulator for demodulating a received vestigial sideband amplitude modulated signal. The modulator includes a Nyquist filter connected between the first and second converters, and the demodulator includes a filter having a rectangular characteristic for processing the signal to be demodulated.
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申请公布号 |
US4622694(A) |
申请公布日期 |
1986.11.11 |
申请号 |
US19840641259 |
申请日期 |
1984.08.16 |
申请人 |
ANT NACHRICHTENTECHNIK GMBH |
发明人 |
WEBER, HERBERT;LIER, HANS-PETER |
分类号 |
H04N5/445;H04N7/04;H04N7/10;(IPC1-7):H04B1/68 |
主分类号 |
H04N5/445 |
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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