JPS5890874A - Output switching device for video tape recorder - Google Patents
Output switching device for video tape recorderInfo
- Publication number
- JPS5890874A JPS5890874A JP56189534A JP18953481A JPS5890874A JP S5890874 A JPS5890874 A JP S5890874A JP 56189534 A JP56189534 A JP 56189534A JP 18953481 A JP18953481 A JP 18953481A JP S5890874 A JPS5890874 A JP S5890874A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- signal
- circuit
- video
- terminal
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/06—Diagnosis, testing or measuring for television systems or their details for recorders
Abstract
Description
【発明の詳細な説明】
発明の技術分野
この発明は、ビデオテープレコー〆の出力切換装置に関
するもので、その購入時に調整を容易にするシステムに
係るものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an output switching device for a video tape recorder, and relates to a system that facilitates adjustment at the time of purchase.
発明の技術的背景
一般に、ビデオテープレコーダ（以下ＶＴＲと称する）
とテレビジ、ン受俸機（モ二り用）とを接続するには、
ＶＴＲの高周波（ｎｙｒ ）出力周波数にテレビジョン
受俸機の空チャンネルを同調させることが行なわれる。Technical Background of the Invention Generally, video tape recorders (hereinafter referred to as VTRs)
To connect the TV receiver and TV receiver (for monitoring),
Tuning of the empty channels of the television set to the high frequency (nyr) output frequency of the VTR is performed.
ＶＴＲを購入したときは、まず、ＶＴＲに録画済みテー
プを装着して再生し、テレビジ、ン受偉機のチャンネル
を種々切換えてみて同調のあったチャンネルをＶＴＲ用
として使用することが行なわれる。When a VTR is purchased, the first thing to do is to load a recorded tape into the VTR, play it back, switch various channels on the television receiver, and use the channel that is in tune for the VTR.
背景技術の問題点
しかしながら、従来のこの種のシステムにあっては、録
画済のテープが必要であシ煩緘を感じさせること、また
、テレビジ、ン受儂機側でモニタスイッチをＶＴＲ側に
切換えるのを忘れて行うと、通常の局受信時の映倫を、
ＶＴＲのモニタを行っているものと感違いすることがあ
シ、録画済チー！の内容を嵐〈知りていなければならな
いという不便がある。Problems with the Background Art However, with conventional systems of this type, pre-recorded tapes are required, making it cumbersome. If you forget to switch, the Eirin during normal station reception,
You might mistake it for monitoring a VTR, but it's already recorded! There is the inconvenience of having to know the contents of Arashi.
発明の目的
この発明社上記の事情に鑑みてなされたもので、ＶＴＲ
自身が自動的にテストパターン信号を発生しモニタテレ
ビジ、ン受像機側のみを同調調整すれば曳いピデオテー
グレコー〆の出力切換装置を提供することを目的とする
。Purpose of the Invention This invention was made in view of the above circumstances.
The object of the present invention is to provide an output switching device for a video recorder that automatically generates a test pattern signal and adjusts the tuning only on the monitor television receiver side.
発明の概要
この発明紘、ノリーン発生回路を備え、これを自動的に
接続、切離しするようにしたことによって、上記目的を
達成するものである。SUMMARY OF THE INVENTION The above objects are achieved by the present invention, which is equipped with a Noreen generation circuit and which is automatically connected and disconnected.
発明の実施例 以下この発明の実施例を図面を参照して説明する。Examples of the invention Embodiments of the present invention will be described below with reference to the drawings.
図においてアンテナ１１の出力線、チ、−す１２に入力
されると六もに、第３のスイッチ２１の第２入力端（Ｘ
３）に入力される。チューナ１２は、ＶＴＲに設ゆられ
ておシ、その出力は、第１のスイッチ１５の第１入力端
（Ｙｌ）に入力される。この第１のスイッチ１５の第２
入力端（Ｘｌ）にはライン入力端子１４が接続されてい
る。In the figure, when the output line of the antenna 11 is input to the output line 12, the second input terminal (X
3) is input. The tuner 12 is installed in the VTR, and its output is input to a first input terminal (Yl) of a first switch 15. The second switch of this first switch 15
A line input terminal 14 is connected to the input end (Xl).
前記テ、−す１２の出力は、ビデオ信号判別回路１３に
も入力される。このビデオ信号判別回路１３紘、受信局
があるか否かの判定を、チ。The output of the step 12 is also input to a video signal discrimination circuit 13. This video signal discrimination circuit 13 determines whether or not there is a receiving station.
−す出力状況から判別するもので、受信局（放送チャン
ネル）があるときは、第２のスイッチ１８をその入力端
（Ｙｌ）側、受信信号が無いときは、入力端（Ｘｌ）側
に切換える自動切換え動作を受ける。前記第１のスイッ
チ１５の出力端（ｚｌ）は、ビデオ、クロマ処焉回路Ｉ
Ｃに接続されている。このビデオ、クロマ処理回路Ｉ−
は、ｖ’ｒｉ記録動作時には磁気回路１ｒｌＣ記録信号
を入力し、ｖ′ｒＲ１再生動作時には磁気回路１１から
再生信号を導出するビデオ、クロマ処理回路１６からの
モニタ用出力あるいは再生出力は、第２のスイッチ１８
の入力端（Ｙ） ）Ｋ加えられる。この第２のスイッチ
１ａは、前記ビデオ信号判別回路１３かもの制御信号に
基づき、入力端（Ｙｌ）又は（Ｘｌ）を選択する回路で
ある。入力端（ｘ２）には、ノ臂ターン信号発生回路１
９の出力が加えられている。第２のスイッチＩＩＩの出
力は、寓周波変調を行うＲＦ変調回路２ｏに入力される
。このＲＦ愛詞回路２ｏの出力は、第３のスイッチ２１
の入力端（Ｙｌ）に加えられる。この第３のスイッチ２
１は、 ＶＴＲを使用するときは入力端（Ｙｌ）側、Ｖ
ＴＲを使用せずテレビジ、ン受像機２２を使用するとき
は入力端（Ｘ３）何に切換えられる。- When there is a receiving station (broadcasting channel), switch the second switch 18 to the input terminal (Yl) side, and when there is no receiving signal, switch the second switch 18 to the input terminal (Xl) side. Subject to automatic switching action. The output terminal (zl) of the first switch 15 is connected to the video and chroma processing circuit I.
Connected to C. This video, chroma processing circuit I-
inputs the recording signal from the magnetic circuit 1rlC during the v'ri recording operation, and derives the reproduction signal from the magnetic circuit 11 during the v'rR1 reproducing operation.The monitor output or reproduction output from the video and chroma processing circuit 16 is the second switch 18
The input terminal (Y) )K is added. This second switch 1a is a circuit that selects the input terminal (Yl) or (Xl) based on the control signal of the video signal discrimination circuit 13. The input end (x2) is equipped with an arm turn signal generation circuit 1.
9 outputs are added. The output of the second switch III is input to an RF modulation circuit 2o that performs frequency modulation. The output of this RF love word circuit 2o is sent to the third switch 21
is added to the input terminal (Yl) of This third switch 2
1 is the input terminal (Yl) side when using a VTR, V
When using the television receiver 22 without using the TR, the input terminal (X3) can be switched to any one.
この発明の装置は上述の如くなされるもので、今％ Ｖ
ＴＲを購入したとき、モニタテレビシ、ン受僚機１１と
の調整を行う作業について説明する。ビデオチーブレコ
ーダ２ｏのＲＦ変調回路２０は、予じめモニタテレビジ
、ン受偉機２２の空チャンネルの周波数に合わせられて
おシ、その販売地域にて放送局の無い周波数が出力され
る。第３のスイッチ２１は入力端（Ｙｌ）側に切換えら
れている。次のＶＴＲのチ、−す１２は、操作によって
受信周波数が決まるが、まず、放送局の無い周波数を選
択させる。第１のスイッチ１５は、入力端（Ｙｌ）を選
択している。The device of this invention is made as described above, and now %V
When a TR is purchased, the work of coordinating the monitor television screen with the receiver aircraft 11 will be explained. The RF modulation circuit 20 of the video recorder 2o is tuned in advance to the frequency of an empty channel of the monitor television receiver 22, and outputs a frequency with no broadcasting station in the sales area. The third switch 21 is switched to the input end (Yl) side. The receiving frequency of the next VTR 12 is determined by operation, but first, a frequency with no broadcasting station is selected. The first switch 15 selects the input end (Yl).
このような設定を行うと、チューナ１２がらは、ビデオ
信号が出力されないために、ビデオ信号判別回路７３杖
、ビデオ信号無しの判定を行い箋第２のスイッチ１８を
入力端（Ｘｌ）側に切換える。この結果、モニタテレビ
ジ、ン受倫機２２には、テストパターンが映し出される
。When such settings are made, since no video signal is output from the tuner 12, the video signal discrimination circuit 73 determines that there is no video signal and switches the second switch 18 to the input terminal (Xl) side. . As a result, the test pattern is displayed on the monitor TV screen machine 22.
一方、テストパターンが映し出されないときはモニタテ
レビジ曹ン受像機２２の選局周波数がＲＦ変調回路２０
の出力と一致していないことがあるので、チャンネルを
操作してみれば良い。On the other hand, when the test pattern is not displayed, the tuning frequency of the monitor television receiver 22 is
Since it may not match the output of the , you can try manipulating the channel.
このようにすれば、必ずテストパターンを得ることがで
きる。In this way, a test pattern can be obtained without fail.
なお、モニタテレビジ、ン受儂機２２０チャンネルが決
った後再生信号をモニタする場合はＶＴＲの再生モード
切換えに応じてロジ、り回路尋を介して第２のスイッチ
１８は入力端（Ｙｌ）側に、また第３のスイッチ２ノは
入力端（Ｙｊ）側に切如換えられる。If you want to monitor the playback signal after the 220 channel of the monitor TV receiver has been determined, the second switch 18 is connected to the input terminal (Yl) via the logic circuit according to the playback mode switching of the VTR. The third switch 2 is switched to the input end (Yj) side.
発明の効果
上述した本装置によると、従来の如く銀画済の磁気チー
！を用意しなくても、テス） ノ４メーン回路が自動的
に働くので、購入時ＶＴＲの操作の煩雑性を感じなくな
る。ｔた、チ、−す１２が放送局を受信し表いように設
定し、あとは、テレビジ曹ン受像機２２のチャンネルを
切換えていくだゆで、テストノ譬ターンを得るので、そ
のチャンネルをＶＴＲ用とすることができる。壕九テス
トパターンという一定の映像であるから、モニタスイッ
チ１１を切換えるのを忘れていて屯すぐに気が付き扱い
が便利ｆなるなどの多くの利点を有し九ビデオテープレ
コーダの出力切換装置である。Effects of the Invention According to the above-mentioned device, it is possible to use silver-painted magnetic chips like in the past! The 4 main circuits work automatically without having to prepare a VTR, so you won't have to worry about the complexity of operating the VTR at the time of purchase. After setting the TV receiver 22 to receive and display the broadcast station, all you have to do is change the channel on the TV receiver 22. It can be done. This output switching device for a video tape recorder has many advantages, such as being convenient to use since it is a constant image called a test pattern, so if you forget to switch the monitor switch 11, you will notice it right away.
図はこの発明の一実施例を示す構成説明図である。
Ｊ２・・・チ、−す、１１１・・・ビデオ信号判別回路
、ｆ５．Ｊ＃、ｊＪ・・・スイッチ、１６・・・ビデオ
。
クロマ処理回路、１９・・り帯ターン信号発生回路、２
０・・・ＲＦ変調回路、２２・・・テレぜジョン受儂機
・The figure is a configuration explanatory diagram showing an embodiment of the present invention. J2...chi, -su, 111...video signal discrimination circuit, f5. J#, jJ...Switch, 16...Video. Chroma processing circuit, 19... band turn signal generation circuit, 2
0...RF modulation circuit, 22...Television receiver.
Claims (1)
ビデオ信号有無を判別するビデオ信号判別回路と、この
ビデオ信号判別回路がビデオ信号の無いことを判別し九
ことによる制御信号によシ、・々ターン信号発生回路の
出力を選択してＲＦ変調回路に加え、ビデオ信号の有る
ことを判別したことによる制御信号によシピデオ。 りｃＩ！信号処理回路の出力を前記ＲＦＥ調回路に加え
るスイッチとを具備したことを特徴とするビデオテープ
レコーダの出力切換装置。[Claims] A video signal discriminating circuit receives a signal outputted from the TE, and determines whether or not there is a video signal in this signal, and the video signal discriminating circuit determines that there is no video signal. Depending on the control signal, the output of the turn signal generation circuit is selected and added to the RF modulation circuit, and the control signal is generated when it is determined that there is a video signal. RicI! An output switching device for a video tape recorder, comprising a switch for applying the output of the signal processing circuit to the RFE adjustment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56189534A JPS5890874A (en) | 1981-11-26 | 1981-11-26 | Output switching device for video tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56189534A JPS5890874A (en) | 1981-11-26 | 1981-11-26 | Output switching device for video tape recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5890874A true JPS5890874A (en) | 1983-05-30 |
Family
ID=16242906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56189534A Pending JPS5890874A (en) | 1981-11-26 | 1981-11-26 | Output switching device for video tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5890874A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61206372U (en) * | 1985-06-14 | 1986-12-26 | ||
| JPS6356872U (en) * | 1986-10-01 | 1988-04-15 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562573A (en) * | 1978-11-01 | 1980-05-12 | Matsushita Electric Ind Co Ltd | Picture recording and reproducing device |
-
1981
- 1981-11-26 JP JP56189534A patent/JPS5890874A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562573A (en) * | 1978-11-01 | 1980-05-12 | Matsushita Electric Ind Co Ltd | Picture recording and reproducing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61206372U (en) * | 1985-06-14 | 1986-12-26 | ||
| JPH0535663Y2 (en) * | 1985-06-14 | 1993-09-09 | ||
| JPS6356872U (en) * | 1986-10-01 | 1988-04-15 | ||
| JPH0516788Y2 (en) * | 1986-10-01 | 1993-05-06 |
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