JPS598108A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS598108A JPS598108A JP57116271A JP11627182A JPS598108A JP S598108 A JPS598108 A JP S598108A JP 57116271 A JP57116271 A JP 57116271A JP 11627182 A JP11627182 A JP 11627182A JP S598108 A JPS598108 A JP S598108A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video
- input terminal
- audio
- switching
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ビデオチーブレコーダの機能ト、・ぐルス彷
号変調方式テープレコーダの機能とを具備し、切換スイ
ッチを切シ換えて、ビデオ信号と・ぐルス符号変調され
たオーディオ信号を更にビデオ信号に変換したオーディ
オ・ビデオ信号とのどちらか一方を磁気テープのビデオ
トラックに選択的に記録する磁気記録再生装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention has the functions of a video chip recorder and a Guls signal modulation tape recorder, and can switch between video signals and The present invention relates to a magnetic recording and reproducing apparatus that selectively records either an audio signal or a video signal obtained by converting a Guls code modulated audio signal into a video signal on a video track of a magnetic tape.
従来例の構成とその問題点
第１図は、従来の磁気記録再生装置の構成を示すもので
、１はアナログのオーディオ信号が入力するオーディオ
端子、２は、アナログのオーディオ信号を標本化、量子
化した土、アナログ・デジタル変換することによシ・や
ルス符号変調したオーディオ信号が、ＮＴＳＣテレビジ
ョン方式に準拠した日本電子工業会の標準フォーマット
によってビデオ信号に変換されたオーディオ・ビデオ信
号を出力する・やルス符号変調録音処理回路（以下録音
処理回路という）、３はＮＴＳＣテレビジョン方式によ
るビデオ信号が入力するビデオ端子、４は、入力端子４
ａが録音処理回路２に、入力端子４ｂがビデオ端子３に
それぞれ接続された切換スイッチで、この切換スイッチ
４は、取扱者が切換レバー（図示しない）を「オーディ
オ」側に入れると、可動接点が入力端子４ａに接続され
、又、取扱者が切換レバーを「ビデオ」側に入れると、
可動接点が入力端子４ｂに接続される。５は切換スイッ
チ４′の出力端子に接続されたビデオトラック記録回路
、６はビデオトラック記録回路５から出力された信号を
磁気チー７０のビデオトラックに記録するビデオヘッド
、７はＮＴＳＣテレビジョン方式によるアナログのビデ
オ音声信号が入力するビデオ音声端子、８は、入力端子
８ａがオーディオ端子１に、入力端子８ｂがビでオ音声
端子７にそれぞれ接続された切換スイッチで、この切換
スイッチ８は、取扱者が切換レバーを「オーディオ」側
に入れると、可動接点が入力端子８ａに接続され、又、
取扱者が切換レバーを「ビデオ」側に入れると、可動接
点が入力端子８ｂに接続されるもので、切換スイッチ４
と連動している。９は切換スイッチ８の出力端子に接続
されたオーディオトラック記録回路、１０はオーディオ
トラック記録回路９から出力された信号を磁気テープの
オーディオトラックに記録するオーディオヘッドである
。Configuration of conventional example and its problems Figure 1 shows the configuration of a conventional magnetic recording and reproducing device. 1 is an audio terminal to which an analog audio signal is input, 2 is an audio terminal for sampling the analog audio signal, and a quantum Outputs an audio/video signal in which an audio signal modulated by a digital signal is converted into a video signal using the standard format of the Japan Electronics Industries Association, which is compliant with the NTSC television system. 3 is a video terminal into which a video signal according to the NTSC television system is input; 4 is an input terminal 4;
A is a changeover switch connected to the recording processing circuit 2, and an input terminal 4b is connected to the video terminal 3. When the operator puts the changeover lever (not shown) to the "audio" side, the changeover switch 4 has a movable contact. is connected to the input terminal 4a, and when the operator turns the switching lever to the "Video" side,
A movable contact is connected to input terminal 4b. 5 is a video track recording circuit connected to the output terminal of the changeover switch 4'; 6 is a video head for recording the signal output from the video track recording circuit 5 on the video track of the magnetic chip 70; and 7 is a video head according to the NTSC television system. The video/audio terminal 8 to which an analog video/audio signal is input is a changeover switch in which the input terminal 8a is connected to the audio terminal 1, and the input terminal 8b is connected to the audio terminal 7. When the person moves the switching lever to the "audio" side, the movable contact is connected to the input terminal 8a, and
When the operator turns the switching lever to the "video" side, the movable contact is connected to the input terminal 8b, and the switching lever 4 is connected to the input terminal 8b.
It is linked with. 9 is an audio track recording circuit connected to the output terminal of the changeover switch 8; 10 is an audio head for recording the signal output from the audio track recording circuit 9 on an audio track of the magnetic tape.
このように構成された従来例では、取扱者は、オーディ
オ・ビデオ信号又げ゛ビデオ信号の記録開始前に、切換
レバーが「オーディオ」と「ビデオ」とのどちらの側に
入っているかを確認の上、所望の側に入っていないとき
には、切換レバーを切υ換えなければならない。このだ
め、従来の磁気記録再生装置の取扱いが面倒であると共
に、取扱者が切換レバーの確認及び切換作業を怠ると、
所望の内容が磁気テープに記録できなくなる欠点があっ
だ０
発明の目的
本発明の目的は、ビデオ信号が入力すると、切換スイッ
チの接続がビデオ信号入力端子側に自動的に切シ換わる
磁気記録再生装置を提供することによシ、前述の従来例
の欠点を解消することにある。In the conventional example configured in this way, the operator must check whether the switching lever is on the "audio" or "video" side before starting recording of the audio/video signal or the video signal. Moreover, if the desired side is not selected, the switching lever must be switched. Unfortunately, handling of conventional magnetic recording and reproducing devices is troublesome, and if the operator neglects to check the switching lever and switch the switch,
There is a drawback that the desired content cannot be recorded on the magnetic tape.Objective of the InventionThe object of the present invention is to provide a magnetic recording and reproducing system in which when a video signal is input, the connection of a changeover switch is automatically switched to the video signal input terminal side. By providing a device, it is an object of the present invention to overcome the drawbacks of the prior art described above.
発明の構成
本発明は、従来の磁気記録再生装置に、ビデオ信号が入
力すると切換信号を出力して、通常オーディオ・ビデオ
信号入力端子側に接続されている切換スイッーチの接続
を、ビデオ信号入力端子側に切り換える切換制御回路を
組み込んだものである。Structure of the Invention The present invention outputs a switching signal when a video signal is input to a conventional magnetic recording/reproducing device, thereby changing the connection of a switching switch normally connected to an audio/video signal input terminal to a video signal input terminal. It incorporates a switching control circuit that switches to the side.
実施例の説明
第２図及び第３図は、本発明の一実施例の構、成を示す
もので、第１図の符号と同一符号のものは同一部分を示
しておシ、又、１１はビデオ端子３かもビデオ信号が入
力すると切換信号を出力する切換制御回路で、この切換
制御回路１１は、例えば、ビデオ端子３から入力したビ
デオ信号をコンデンサ１２で直流阻止した上、整流回路
１３で整流し、且つ、積分回路１４で積分した信号の電
圧と、基準電圧源１５の電圧とを比較回路１６で比較し
て、積分回路１４の電圧が基準電圧源１５の電圧よシ高
くなったとき、即ち、ビデオ信号が切換制御回路１１に
入力したとき、切換信号を出力する。１７は、入力端子
１７ａが録音処理回路２に、入力端子１７ｂがビデオ端
子３に、出力端子がビデオトラック記録回路５にそれぞ
れ接続された切換スイッチで、この切換スイッチ１７は
、切換制御回路１１から切換信号が出力されないと、可
動接片が入力端子１７ａに接続され、又、切換制御回路
１１から切換信号が出力されると、可動接片が入力端子
１７ｂに接続される。１８は、入力端子１８ａがオーデ
ィオ端子１に、入力端子１８ｂがビデオ音声端子７に、
出力端子がオーディオトラック記録回路９にそれぞれ接
続された切換スイッｊで、この切換スイッチ１８は、切
換制御回路１１から切換信号が出力されないと、可動接
片が入力端子１８ａに接続され、又、切換制御回路１１
から切換信号が出力されると、可動接片が入力端子１７
ｂに接続されるもので、切換スイッチ１７と連動してい
る。DESCRIPTION OF THE EMBODIMENTS FIGS. 2 and 3 show the structure of an embodiment of the present invention, and the same reference numerals as those in FIG. 1 indicate the same parts. is a switching control circuit that outputs a switching signal when a video signal is input from the video terminal 3. For example, this switching control circuit 11 blocks the video signal input from the video terminal 3 from direct current with a capacitor 12, and then outputs a switching signal with a rectifier circuit 13. When the voltage of the signal rectified and integrated by the integrating circuit 14 and the voltage of the reference voltage source 15 are compared by the comparator circuit 16, and the voltage of the integrating circuit 14 becomes higher than the voltage of the reference voltage source 15. That is, when a video signal is input to the switching control circuit 11, a switching signal is output. 17 is a changeover switch whose input terminal 17a is connected to the recording processing circuit 2, input terminal 17b is connected to the video terminal 3, and output terminal is connected to the video track recording circuit 5. When the switching signal is not output, the movable contact piece is connected to the input terminal 17a, and when the switching control circuit 11 outputs the switching signal, the movable contact piece is connected to the input terminal 17b. 18, the input terminal 18a is the audio terminal 1, the input terminal 18b is the video audio terminal 7,
A changeover switch j whose output terminals are respectively connected to the audio track recording circuit 9, and when a changeover signal is not output from the changeover control circuit 11, a movable contact piece is connected to the input terminal 18a, and the changeover switch 18 Control circuit 11
When a switching signal is output from the input terminal 17, the movable contact piece
b, and is linked to the changeover switch 17.
このように構成された本実施例では、オーディオ端子１
からオーディオ信号が入力するときは、切換制御回路１
１から切換信号が出力されないので、切換スイッチ１７
の可動接片は入力端子１７ａに、切換スイッチ１８の可
動接片は入′力端子１８ａにそれぞれ接続されて、磁気
テープのビデオトラック及びオーディオトラックには、
オーディオ端子１から入力したオーディオ信号を変換し
た信号がそれぞれ記録される。又、ビデオ端子３からビ
デオ信号が、ビデオ音声端子７からビデオ音声信号がそ
れぞれ入力するときは、切換回路ｊ１から切換信号が出
力されて、入力端子Ｉ７ａに接続されていた切換スイッ
チ１７の可動接片の接続が入力端子１７ｂに、入力端子
１８ａに接続されていた切換スイッチ１８の可動接片の
接続が入力端子１８ｂにそれぞれ切シ換わシ、磁気テー
プのビデオトラックにはビデオ端子３から入力したビデ
オ信号を変換した信号が、又、磁気テープのオーディオ
トラックにはビデオ音声端子７から入力したビデオ音声
信号を変換した信号がそれぞれ記録される。In this embodiment configured in this way, the audio terminal 1
When the audio signal is input from the switching control circuit 1
Since no switching signal is output from switch 17,
The movable contact piece of the selector switch 18 is connected to the input terminal 17a, and the movable contact piece of the changeover switch 18 is connected to the input terminal 18a.
Signals obtained by converting the audio signal input from the audio terminal 1 are respectively recorded. Also, when a video signal is input from the video terminal 3 and a video audio signal is input from the video audio terminal 7, a switching signal is output from the switching circuit j1, and the movable contact of the changeover switch 17 connected to the input terminal I7a is output. The connection of the movable contact piece of the changeover switch 18, which was connected to the input terminal 17b and the input terminal 18a, is changed to the input terminal 18b, respectively, and the video track of the magnetic tape is input from the video terminal 3. A signal obtained by converting the video signal inputted from the video/audio terminal 7 is recorded on the audio track of the magnetic tape, and a signal obtained by converting the video/audio signal input from the video/audio terminal 7 is recorded.
尚、切換スイッチ１７及び１８は、リレー、電子スイッ
チ等のように、電気的に切換制御ができるものであれば
、何を使用してもよい。Note that the changeover switches 17 and 18 may be of any type, such as relays, electronic switches, etc., as long as they can be electrically controlled.
発明の詳細
な説明したように、本発明によれば、ビデオ信号が入力
した切換制御回路から切換信号が出力されると、通常オ
ーディオ・ビデオ信号入力端子側に接続されている切換
スイッチの接続が、ビデオ信号入力端子側に自動的に切
シ換わるので、取扱者は入力の確認及び切換作業をする
必要がなくなって、取扱いが楽になると共に、所望の内
容が磁気テープに確実に記録できる利点がある。As described in detail, according to the present invention, when a switching signal is output from the switching control circuit into which the video signal is input, the connection of the changeover switch normally connected to the audio/video signal input terminal is changed. Since the switch automatically switches to the video signal input terminal side, the operator does not have to check or switch the input, making handling easier and having the advantage of being able to reliably record the desired content on the magnetic tape. be.
第１図は従来の磁気記録再生装置の回路図、第２図は本
発明の一実施例の回路図、第３図は本発明の一実施例の
切換制御回路の一具体例の回路図である。
１・・・オーディオ端子、２・・・・ぐルス符号変調録
音処理回路、３・・・ビデオ端子’、４．’８．１７，
１．８・・・切換スイッチ、４ ａ ｙ ４ ｂ ｒ
８ ａ ｒ ８ ｂ ｒ ］ ７ ａｙ１７ｂ、１８ａ
、１８ｂ・・・入力端子、６・・・ビデオヘッド、７・
・・ビデオ音声端子、１ｏ・・・オーディオヘッド、１
１・・・切換制御回路。
第１図
ｂ
第２図
＋８ｂ
第３図FIG. 1 is a circuit diagram of a conventional magnetic recording/reproducing device, FIG. 2 is a circuit diagram of an embodiment of the present invention, and FIG. 3 is a circuit diagram of a specific example of a switching control circuit of an embodiment of the present invention. be. 1... Audio terminal, 2... Guls code modulation recording processing circuit, 3... Video terminal', 4. '8.17,
1.8... Selector switch, 4 a y 4 b r
8 a r 8 b r ] 7 ay17b, 18a
, 18b...input terminal, 6...video head, 7.
...Video audio terminal, 1o...Audio head, 1
1...Switching control circuit. Figure 1b Figure 2+8b Figure 3
Claims (1)
変調されたオーディオ信号を更にビデオ信号に変換した
オーディオ・ビデオ信号とを、磁気テープのビデオトラ
ックに選択的に記録する磁気記録再生装置において、前
記ビデオ信号が入力したときには、切換制御回路から切
換信号が出力されて、通常前記オーディオ・ビデオ信号
入力端子側に接続されている前記切換スイッチの接続が
、前記ビデオ信号入力端子側に切シ換わることを特徴と
する磁気記録再生装置。In a magnetic recording and reproducing apparatus that selectively records a video signal and an audio/video signal obtained by converting a pulse code modulated audio signal into a video signal on a video track of a magnetic tape by switching a changeover switch, the video When the signal is input, a switching signal is output from the switching control circuit, indicating that the connection of the changeover switch, which is normally connected to the audio/video signal input terminal side, is switched to the video signal input terminal side. Features of magnetic recording and reproducing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57116271A JPS598108A (en) | 1982-07-06 | 1982-07-06 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57116271A JPS598108A (en) | 1982-07-06 | 1982-07-06 | Magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS598108A true JPS598108A (en) | 1984-01-17 |
Family
ID=14682941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57116271A Pending JPS598108A (en) | 1982-07-06 | 1982-07-06 | Magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60179723A (en) * | 1984-02-27 | 1985-09-13 | Sharp Corp | Liquid crystal projection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229206A (en) * | 1975-08-29 | 1977-03-04 | Victor Co Of Japan Ltd | Magnetic recorder/player |
-
1982
- 1982-07-06 JP JP57116271A patent/JPS598108A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229206A (en) * | 1975-08-29 | 1977-03-04 | Victor Co Of Japan Ltd | Magnetic recorder/player |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60179723A (en) * | 1984-02-27 | 1985-09-13 | Sharp Corp | Liquid crystal projection device |
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