发明名称 |
FLOOR STRUCTURE FOR WATERPROOF AND INSULATION AND CONSTRUCTION METHOD THEREOF |
摘要 |
In a receiver, a reference frequency oscillator (RFO) generates a reference frequency signal having a reference frequency (Fref). A clock circuit derives a clock signal (CLK) from the reference frequency signal. A frequency converter (FRC) converts an input signal (RF) in frequency with a conversion frequency (Fconv) so as to obtain an intermediate frequency signal (IF). The conversion frequency (Fconv) is P times the reference frequency (Fref) divided by M, P and M being integers, P being adjustable. A frequency- shift circuit (FSC) is included for shifting the reference frequency (Fref) with a frequency shift (DeltaFref) which is substantially equal to K times the reference frequency (Fref) divided by a typical value of P (Ptyp) K being an integer (DeltaFref=K.Fref/Ptyp). Accordingly, by shifting the reference frequency (Fref) with the aforementioned frequency shift (DeltaFref), it can be prevented that the clock signal (CLK) causes interference in a channel to which the receiver needs to be tuned, without substantially affecting tuning accuracy. There will always be a value of P for which the receiver is accurately tuned to the desired channel whether the reference frequency (Fref) is shifted or not. |
申请公布号 |
KR20010112682(A) |
申请公布日期 |
2001.12.21 |
申请号 |
KR20000031985 |
申请日期 |
2000.06.10 |
申请人 |
BUIL KEONHWA CO., LTD.;DEOKCHANG CO., LTD. |
发明人 |
KIM, CHANG HO;KIM, CHUNG YEOP;KIM, SANG GAP |
分类号 |
E04F15/00 |
主分类号 |
E04F15/00 |
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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