JPS61158779U - - Google Patents
Info
- Publication number
- JPS61158779U JPS61158779U JP3981385U JP3981385U JPS61158779U JP S61158779 U JPS61158779 U JP S61158779U JP 3981385 U JP3981385 U JP 3981385U JP 3981385 U JP3981385 U JP 3981385U JP S61158779 U JPS61158779 U JP S61158779U
- Authority
- JP
- Japan
- Prior art keywords
- audio
- circuit
- carrier
- signal
- wave
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案に係るＲＦ変調器の音声回路の
一実施例を示す全体ブロツク図、第２図は音声出
力のスペクトラム図、第３図乃至第８図は音声出
力回路の他の実施例を示す回路図、第９図は従来
のＲＦ変調器の全体ブロツク図、第１０図は第９
図の抑圧回路の構成を示す回路図、第１１図は従
来の音声出力スペクトラム図である。
４……ビデオキヤリヤ発振回路、５……オーデ
イオ入力端子、６……オーデイオアンプ、７……
ＦＭ発振回路、８……混合回路、Ｒ１，Ｒ２……
抵抗、Ｃ１，Ｃ２……コンデンサ、Ｌ１，Ｌ２，
Ｌ３，Ｌ４……コイル、Ｚ……補正用インピーダ
ンス。
Fig. 1 is an overall block diagram showing one embodiment of the audio circuit of an RF modulator according to the present invention, Fig. 2 is a spectrum diagram of audio output, and Figs. 3 to 8 are other embodiments of the audio output circuit. 9 is an overall block diagram of a conventional RF modulator, and FIG. 10 is a circuit diagram showing a conventional RF modulator.
FIG. 11 is a circuit diagram showing the configuration of the suppression circuit shown in the figure, and FIG. 11 is a conventional audio output spectrum diagram. 4...Video carrier oscillation circuit, 5...Audio input terminal, 6...Audio amplifier, 7...
FM oscillation circuit, 8...Mixing circuit, R1 , R2 ...
Resistance, C 1 , C 2 ... Capacitor, L 1 , L 2 ,
L3 , L4 ...Coil, Z...Correction impedance.
Claims (1)
生するＦＭ信号発生回路と、 所定周波数の搬送波信号を発生する搬送信号発
生回路と、 前記ＦＭ信号発生回路からのＦＭ波信号と前記
搬送信号発生回路からの搬送波信号とを混合する
混合回路と、 この混合回路より出力される音声搬送波出力中
の音声下側波成分を音声上側波成分と同程度の出
力レベルのまま出力する回路とを具備したことを
特徴とするＲＦ変調器の音声回路。[Claims for Utility Model Registration] An FM signal generation circuit that generates an FM wave signal modulated by an audio input signal, a carrier signal generation circuit that generates a carrier signal of a predetermined frequency, and an FM wave signal from the FM signal generation circuit. and a carrier wave signal from the carrier signal generation circuit; and a mixing circuit that mixes the audio carrier wave output from the mixing circuit, and outputs the audio lower side wave component in the audio carrier output while maintaining the same output level as the audio upper side wave component. 1. An audio circuit for an RF modulator, characterized by comprising a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3981385U JPS61158779U (en) | 1985-03-22 | 1985-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3981385U JPS61158779U (en) | 1985-03-22 | 1985-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61158779U true JPS61158779U (en) | 1986-10-01 |
Family
ID=30548114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3981385U Pending JPS61158779U (en) | 1985-03-22 | 1985-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61158779U (en) |
-
1985
- 1985-03-22 JP JP3981385U patent/JPS61158779U/ja active Pending
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