JPS633239Y2 - - Google Patents
Info
- Publication number
- JPS633239Y2 JPS633239Y2 JP1982148631U JP14863182U JPS633239Y2 JP S633239 Y2 JPS633239 Y2 JP S633239Y2 JP 1982148631 U JP1982148631 U JP 1982148631U JP 14863182 U JP14863182 U JP 14863182U JP S633239 Y2 JPS633239 Y2 JP S633239Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- frequency
- signal
- output
- tuning
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 101100339482 Colletotrichum orbiculare (strain 104-T / ATCC 96160 / CBS 514.97 / LARS 414 / MAFF 240422) HOG1 gene Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
【考案の詳細な説明】
本考案はTV搬送波周波数等周波数の定まつた
高周波入力信号を入力信号の周波数に応じて他の
周波数に自動変換する周波数変換装置に関する。[Detailed Description of the Invention] The present invention relates to a frequency conversion device that automatically converts a high frequency input signal having a fixed frequency such as a TV carrier frequency to another frequency according to the frequency of the input signal.
一般にTV搬送波周波数等の調整や検査におい
てはTV搬送波周波数を他の周波数に変換して行
なわれる。 Generally, when adjusting or inspecting the TV carrier frequency, etc., the TV carrier frequency is converted to another frequency.
従来、この周波数変換は入力されているTV搬
送波周波数がどの周波数であるかを何等かの手段
で確認し、その後スイツチ操作により発振回路を
切替えて行なつてきた。この為周波数の確認・ス
イツチ操作に時間がかかるばかりか操作が煩雑で
ある等の問題があつた。 Conventionally, this frequency conversion has been performed by confirming which frequency is the input TV carrier wave frequency by some means, and then switching the oscillation circuit by operating a switch. For this reason, there were problems such as not only was it time consuming to check the frequency and operate the switch, but the operation was also complicated.
本考案は上記の点に鑑みなされたもので、入力
信号に応じて自動的に周波数変換を行なう装置を
提供するものである。 The present invention has been devised in view of the above points, and it is an object of the present invention to provide a device that automatically performs frequency conversion according to an input signal.
以下、本考案の内容を実施例を用いて説明す
る。第１図は本考案の１実施例のブロツク図であ
り、同図において、１は入力端子で、入力端子１
にTV搬送波信号1が入力されると入力信号は信
号分配回路２により周波数変換回路３と同調回路
群４に分配される。同調回路４に入つた信号は周
波数1のみを通過させる狭帯域同調回路５ａを通
り検波回路７ａに入る。 Hereinafter, the contents of the present invention will be explained using examples. FIG. 1 is a block diagram of one embodiment of the present invention, in which 1 is an input terminal;
When a TV carrier signal 1 is input to the input signal distribution circuit 2, the input signal is distributed to a frequency conversion circuit 3 and a tuning circuit group 4 by a signal distribution circuit 2. The signal entering the tuning circuit 4 passes through a narrowband tuning circuit 5a that allows only frequency 1 to pass, and enters the detection circuit 7a.
なお、同調回路群４の狭帯域同調回路５ａ，５
ｂはTV搬送波周波数に合わせ1，2……等にあ
らかじめ同調周波数を設定しておく。狭帯域同調
回路５ａの出力は検波回路７ａによりDCレベル
に変換される。このDCレベルの変化を信号検出
回路８ａにより検出してスイツチング回路１１ａ
はONとなり、駆動電源１０を発振回路９ａに接
続する。駆動電源１０の接続により発振回路９ａ
はあらかじめ定められた周波数OSC1で発振する。
この信号は前記周波数変換回路３に注入され、
1′＝1−OSC1の信号が発生する。周波数変換回路
の３の出力は同調回路１２により、目的以外の信
号をとりのぞかれ出力端子１３より出力される。 Note that the narrowband tuning circuits 5a, 5 of the tuning circuit group 4
For b, the tuning frequency is set in advance to 1 , 2 , etc. in accordance with the TV carrier frequency. The output of the narrowband tuning circuit 5a is converted to a DC level by the detection circuit 7a. This DC level change is detected by the signal detection circuit 8a, and the switching circuit 11a
is turned on and connects the drive power supply 10 to the oscillation circuit 9a. The oscillation circuit 9a is activated by connecting the drive power source 10.
oscillates at a predetermined frequency OSC1 .
This signal is injected into the frequency conversion circuit 3,
1 ′ = 1 − OSC1 signal is generated. The output of the frequency conversion circuit 3 is outputted from an output terminal 13 by a tuning circuit 12, which removes signals other than those of interest.
次に周波数1の入力信号が周波数2の別の入力
信号に変化すると、狭帯域同調回路５ａは1以外
の周波数を通過させないので、検波回路７ａの
DCレベルは瞬時にして信号検出回路８ａの検出
レベル以下となり、スイツチング回路１１ａは
OFFし、発振回路９ａは発振を停止する。 Next, when the input signal of frequency 1 changes to another input signal of frequency 2 , the narrowband tuning circuit 5a does not pass frequencies other than 1 , so the detection circuit 7a
The DC level instantly falls below the detection level of the signal detection circuit 8a, and the switching circuit 11a
OFF, and the oscillation circuit 9a stops oscillating.
しかしこれと同時に別の狭帯域回路５ｂが周波
数2の入力信号を通過させるので、検波回路７
ｂ、信号検出回路８ｂの出力に応答して、スイツ
チング回路１１ｂがONし、発振回路９ｂが周波
数OSC2（＝2−1′）で発振する。その結果、周波
数2の入力信号は自動的に周波数1′に変換され
る。 However, at the same time, another narrowband circuit 5b passes the input signal of frequency 2 , so the detection circuit 7
b. In response to the output of the signal detection circuit 8b, the switching circuit 11b is turned on, and the oscillation circuit 9b oscillates at a frequency OSC2 (= 2-1 ' ). As a result, an input signal of frequency 2 is automatically converted to frequency 1 '.
従来この周波数変換は第２図のように入力端子
２１に入力信号が入力されると何らかの手段で入
力信号を確認し、必要と思われる発振回路２２ａ
又は２２ｂの駆動電源２３のスイツチ２４ａ又は
２４ｂをONして発振回路２２ａ又は２２ｂを選
択的に動作させていた。そして、このことにより
周波数変換回路２５で所定の周波数に周波数変換
を行ない同調回路２６により目的以外の信号をと
りのぞき、出力端子２７より信号を出力した。こ
の場合、入力信号を何等かの手段で確認し、これ
に合わせて発振回路２２ａ又は２２ｂを切換えな
ければならないという煩雑さがあつた。 Conventionally, in this frequency conversion, when an input signal is input to the input terminal 21 as shown in FIG.
Alternatively, the switch 24a or 24b of the drive power source 23 of the drive power source 22b is turned on to selectively operate the oscillation circuit 22a or 22b. Then, the frequency conversion circuit 25 performs frequency conversion to a predetermined frequency, the tuning circuit 26 removes signals other than the intended one, and outputs the signal from the output terminal 27. In this case, the input signal must be checked by some means and the oscillation circuit 22a or 22b must be switched accordingly, which is complicated.
以上、説明したように、本考案によれば、入力
信号を分配する信号分配回路、信号分配回路の一
方の出力端に接続され、所定の同調周波数に設定
された狭帯域同調回路、狭帯域同調回路の出力を
検波する検波回路、検波回路の出力に応答するス
イツチング回路、スイツチング回路の出力に応動
する発振回路、発振回路及び信号分配回路の他方
の出力端に接続された周波数変換回路とを備えた
ので、入力信号の周波数に応じて、発振周波数が
自動的に切替わり、入力信号を確認してスイツチ
操作をする等の煩雑さが解消される。 As described above, according to the present invention, there is provided a signal distribution circuit that distributes input signals, a narrowband tuning circuit connected to one output end of the signal distribution circuit and set to a predetermined tuning frequency, and a narrowband tuning circuit that is connected to one output end of the signal distribution circuit and set to a predetermined tuning frequency. A detection circuit that detects the output of the circuit, a switching circuit that responds to the output of the detection circuit, an oscillation circuit that responds to the output of the switching circuit, and a frequency conversion circuit that is connected to the other output end of the oscillation circuit and the signal distribution circuit. Therefore, the oscillation frequency is automatically switched according to the frequency of the input signal, and the complexity of checking the input signal and operating a switch is eliminated.
第１図は本考案の１実施例のブロツク図、第２
図は従来例のブロツクを示す。
１……入力端子、２……信号分配器、３……周
波数変換回路、４……狭帯域同調回路群、５ａ，
５ｂ……狭帯域同調回路、７ａ，７ｂ……検波回
路、８ａ，８ｂ……信号検出回路、９ａ，９ｂ…
…発振回路、１０……発振用駆動電源、１１ａ，
１１ｂ……駆動電源のスイツチング回路、１２…
…同調回路、１３……出力端子。
Figure 1 is a block diagram of one embodiment of the present invention;
The figure shows a conventional block. DESCRIPTION OF SYMBOLS 1... Input terminal, 2... Signal distributor, 3... Frequency conversion circuit, 4... Narrowband tuning circuit group, 5a,
5b... Narrowband tuning circuit, 7a, 7b... Detection circuit, 8a, 8b... Signal detection circuit, 9a, 9b...
...Oscillation circuit, 10...Oscillation drive power supply, 11a,
11b...Switching circuit for drive power supply, 12...
...tuned circuit, 13...output terminal.
Claims (1)
回路の一方の出力端に接続され、所定の同調周波
数に設定された狭帯域同調回路、該狭帯域同調回
路の出力を検波する検波回路、該検波回路の出力
に応答するスイツチング回路、該スイツチング回
路の出力に応じて応動する発振回路、該発振回路
及び信号分配回路の他方の出力端に接続された周
波数変換回路とを備えたことを特徴とする高周波
信号の自動周波数変換装置。 A signal distribution circuit that distributes an input signal, a narrowband tuning circuit connected to one output end of the signal distribution circuit and set to a predetermined tuning frequency, a detection circuit that detects the output of the narrowband tuning circuit, and the detection circuit. A switching circuit that responds to the output of the circuit, an oscillation circuit that responds to the output of the switching circuit, and a frequency conversion circuit that is connected to the other output end of the oscillation circuit and the signal distribution circuit. Automatic frequency conversion device for high frequency signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982148631U JPS5956858U (en) | 1982-09-30 | 1982-09-30 | Automatic frequency conversion device for high frequency signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982148631U JPS5956858U (en) | 1982-09-30 | 1982-09-30 | Automatic frequency conversion device for high frequency signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5956858U JPS5956858U (en) | 1984-04-13 |
| JPS633239Y2 true JPS633239Y2 (en) | 1988-01-27 |
Family
ID=30330164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982148631U Granted JPS5956858U (en) | 1982-09-30 | 1982-09-30 | Automatic frequency conversion device for high frequency signals |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5956858U (en) |
-
1982
- 1982-09-30 JP JP1982148631U patent/JPS5956858U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5956858U (en) | 1984-04-13 |
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