JPS61109242U - - Google Patents
Info
- Publication number
- JPS61109242U JPS61109242U JP19412884U JP19412884U JPS61109242U JP S61109242 U JPS61109242 U JP S61109242U JP 19412884 U JP19412884 U JP 19412884U JP 19412884 U JP19412884 U JP 19412884U JP S61109242 U JPS61109242 U JP S61109242U
- Authority
- JP
- Japan
- Prior art keywords
- band
- vhf
- audio
- converter
- television
- 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
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Superheterodyne Receivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図はテレビ放送波とＦＭの周波数帯域を示す図、
第３図は本考案におけるパネル構成の一実施例を
示す正面図、第４図は従来のテレビチユーナの回
路図である。
１……アンテナ、３Ｖ……バンドパスフイルタ
、４Ｖ……増幅用アンプ、５Ｖ……同調回路、６
Ｖ……ローカルオシレータ、７Ｖ……ミキサ、１
０，１４……切換スイツチ、１１……バンドパス
フイルタ、１２……ミキサ、１３……ローカルオ
シレータ、１３Ａ……トリマ。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure shows the frequency bands of TV broadcast waves and FM.
FIG. 3 is a front view showing an embodiment of the panel configuration according to the present invention, and FIG. 4 is a circuit diagram of a conventional television tuner. 1...Antenna, 3V...Band pass filter, 4V...Amplification amplifier, 5V...Tuning circuit, 6
V...Local oscillator, 7V...Mixer, 1
0, 14...Selector switch, 11...Band pass filter, 12...Mixer, 13...Local oscillator, 13A...Trimmer.
Claims (1)
らテレビ音声を受信するテレビチユーナにおいて
、テレビ放送波のＶＨＦ帯の音声帯域波に同調し
て中間周波数信号を得るＶＨＦ系チユーナ部と、
テレビ放送波のＵＨＦ帯の音声帯域波をＶＨＦ帯
の音声帯域信号に変換するコンバータと、テレビ
音声受信のＶＨＦ帯とＵＨＦ帯の切換え時にアン
テナからのテレビ放送波をＶＨＦ系チユーナ部へ
、または前記コンバータを通して該ＶＨＦ系チユ
ーナ部へ、入力を切換える切換スイツチとを備え
たことを特徴とするテレビチユーナ。 (2) 前記コンバータはＵＨＦ帯の音声帯域波を
、ローカルオシレータの発振出力と混合すること
でＶＨＦ帯の音声帯域信号に変換し、該ローカル
オシレータの発振周波数をＵＨＦ帯の帯域切換え
で切換える構成にした実用新案登録請求の範囲第
１項記載のテレビチユーナ。[Claims for Utility Model Registration] (1) A VHF system that obtains an intermediate frequency signal by tuning to the VHF band audio band wave of the TV broadcast wave in a TV tuner that receives TV audio from TV broadcast waves in the VHF band and UHF band. Chuyuna club and
A converter that converts UHF band audio band waves of television broadcast waves to VHF band audio band signals, and a converter that converts television broadcast waves from an antenna to a VHF system tuner section when switching between the VHF band and UHF band of television audio reception, or the above-mentioned. A television tuner comprising a changeover switch for switching input to the VHF tuner section through the converter. (2) The converter is configured to convert the UHF band audio band wave into a VHF band audio band signal by mixing it with the oscillation output of the local oscillator, and to switch the oscillation frequency of the local oscillator by switching the UHF band. A television tuner according to claim 1 of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19412884U JPS61109242U (en) | 1984-12-20 | 1984-12-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19412884U JPS61109242U (en) | 1984-12-20 | 1984-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61109242U true JPS61109242U (en) | 1986-07-10 |
Family
ID=30751565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19412884U Pending JPS61109242U (en) | 1984-12-20 | 1984-12-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61109242U (en) |
-
1984
- 1984-12-20 JP JP19412884U patent/JPS61109242U/ja active Pending
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