JPS6251880U - - Google Patents
Info
- Publication number
- JPS6251880U JPS6251880U JP14309285U JP14309285U JPS6251880U JP S6251880 U JPS6251880 U JP S6251880U JP 14309285 U JP14309285 U JP 14309285U JP 14309285 U JP14309285 U JP 14309285U JP S6251880 U JPS6251880 U JP S6251880U
- Authority
- JP
- Japan
- Prior art keywords
- trap
- converter
- frequency
- carrier
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005236 sound signal Effects 0.000 claims description 3
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第１図は本願考案のトラツプ回路が利用された
ＲＦコンバータの回路、第２図は従来のトラツプ
回路、第３図はトラツプ回路の特性を示す図であ
る。
３…ＲＦ発振子（２周波）、７…搬送周波数選
択線、９…音声信号入力端子、１０…映像信号入
力端子、１１…変調映像信号線、１６…トラツプ
回路、１７…ダイオード、２２…変調音声信号線
、２４…スイツチ。
FIG. 1 shows a circuit of an RF converter using the trap circuit of the present invention, FIG. 2 shows a conventional trap circuit, and FIG. 3 shows the characteristics of the trap circuit. 3... RF oscillator (2 frequencies), 7... Carrier frequency selection line, 9... Audio signal input terminal, 10... Video signal input terminal, 11... Modulation video signal line, 16... Trap circuit, 17... Diode, 22... Modulation Audio signal line, 24...switch.
Claims (1)
バータであつて、該コンバータは変調する搬送周
波数を予め定められた２つの周波数のうちで切換
えられるものであり、かつ音声信号のＦＭ変調波
の下側波帯を除去するトラツプ回路を有するコン
バータであつて、前記トラツプ回路にはトラツプ
周波数を前記２つの搬送周波数に対応する２つの
トラツプ周波数のいずれかとする切換え回路を設
け、かつ前記搬送周波数の切換えに連動してトラ
ツプ周波数が切換えられることを特徴とするＲＦ
コンバータにおける音声搬送波のトラツプ回路。 An RF converter that modulates a video signal into a broadcast radio wave format, the converter can switch the carrier frequency to be modulated between two predetermined frequencies, and the lower side wave of the FM modulated wave of the audio signal. A converter having a trap circuit for removing the trap frequency, wherein the trap circuit is provided with a switching circuit for setting the trap frequency to one of two trap frequencies corresponding to the two carrier frequencies, and is linked to switching of the carrier frequency. RF characterized in that the trap frequency is switched by
Audio carrier trap circuit in converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14309285U JPS6251880U (en) | 1985-09-19 | 1985-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14309285U JPS6251880U (en) | 1985-09-19 | 1985-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6251880U true JPS6251880U (en) | 1987-03-31 |
Family
ID=31052443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14309285U Pending JPS6251880U (en) | 1985-09-19 | 1985-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6251880U (en) |
-
1985
- 1985-09-19 JP JP14309285U patent/JPS6251880U/ja active Pending
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