发明名称 |
Receiver adaptively operable for multiple signal transmission systems |
摘要 |
A receiver for selectively receiving high frequency signals from analog modulated signals and digital modulated signals. The receiver has an intermediate frequency signal circuit for selecting a desired channel of the high frequency signals and for frequency-converting the high frequency signal of the selected channel into an intermediate frequency signal, a demodulator for demodulating the intermediate frequency signal, which is adapted to be capable of demodulating modulated signals in a variety of modulation systems, the demodulator including at least a digital section, and a controller for controlling the demodulator to be able to discriminate between the analog modulated signals and the digital modulated signals, based on a demodulated signal output from the digital section of the demodulator and to be switched into a demodulation mode suited for modulation system of the selected channel of the high frequency signals.
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申请公布号 |
US5418815(A) |
申请公布日期 |
1995.05.23 |
申请号 |
US19930076131 |
申请日期 |
1993.06.14 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
ISHIKAWA, TATSUYA;TAGA, NOBORU |
分类号 |
H03B28/00;H03D1/22;H03D3/00;H03D3/24;H03D5/00;H03D7/16;H04L27/00;H04L27/38;H04N5/44;H04N5/455;H04N5/46;H04N9/00;(IPC1-7):H04L27/00 |
主分类号 |
H03B28/00 |
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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