JPS61269262A - Video signal recording device - Google Patents
Video signal recording deviceInfo
- Publication number
- JPS61269262A JPS61269262A JP11102685A JP11102685A JPS61269262A JP S61269262 A JPS61269262 A JP S61269262A JP 11102685 A JP11102685 A JP 11102685A JP 11102685 A JP11102685 A JP 11102685A JP S61269262 A JPS61269262 A JP S61269262A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- video signal
- circuit
- signal
- head
- 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.)
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Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は記録しようとする映像を見ながら円盤状記録
媒体にその映像信号を記録できる映像信号記録装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video signal recording device that can record a video signal on a disc-shaped recording medium while viewing the video to be recorded.
［従来の技術］
第２図は従来の映像信号記録装置を示す構成図であり１
図において（１）は円盤状記録媒体である磁気ディスク
、（２）は磁気ディスク（１）を回転させるモータ、（
３）はモータ（２）の回転位相信号を取り出すＰＧコイ
ル、（４）は磁気ヘッド、（５）は磁気ヘッド（４）を
一定ピツチで磁気ディスク（１）の半径方向に駆動する
ヘッド送り機構、（６）はヘッド送り機構の駆動源、（
７）はヘッド送り機構（５）が所定量移動する毎に信号
を発するロータリエンコーダ、（８）は駆動源（６）を
動作させる駆動回路、（９）はロータリエンコーダ（７
）からの出力によりヘッド送り機構（５）の所定量移動
完了信号を発生する第１のタイミング回路、（１０）は
ヘッド送り機構（５）の所定量送り動作を繰り返し行な
う繰り返し間隔を設定する第２のタイミング回路、（１
１）は記録用手動スイッチ、 （１２）はＮＴＳＣ方式
ＴＶ信号の入力端子、（１３）は入力端子（１２）から
直接分岐したモニタ端子、（１４）は映像信号処理回路
、 （１５）は映像信号処理回路で作られた信号を磁気
ヘッド（４）により磁気ディスク（１）へ記録する信号
に変換する記録回路、（１Ｇ）は記録回路（５）からの
信号の磁気ヘッド（４）への供給を開閉制御する記録ス
イッチ、 （１７）は映像信号処理回路（１４）からの
垂直同期信号を基準としてＰＧコイル（３）の信号によ
り磁気ディスク（１）の回転数をＴＶ垂直同期信号と同
期させるサーボ回路。[Prior Art] Figure 2 is a block diagram showing a conventional video signal recording device.
In the figure, (1) is a magnetic disk which is a disk-shaped recording medium, (2) is a motor that rotates the magnetic disk (1), and (2) is a motor that rotates the magnetic disk (1).
3) is a PG coil that extracts the rotational phase signal of the motor (2), (4) is a magnetic head, and (5) is a head feeding mechanism that drives the magnetic head (4) at a constant pitch in the radial direction of the magnetic disk (1). , (6) is the drive source of the head feeding mechanism, (
7) is a rotary encoder that emits a signal every time the head feed mechanism (5) moves a predetermined amount, (8) is a drive circuit that operates the drive source (6), and (9) is a rotary encoder (7).
), the first timing circuit generates a signal indicating the completion of movement of the head feeding mechanism (5) by a predetermined amount, and the first timing circuit (10) sets a repetition interval at which the movement of the head feeding mechanism (5) is repeated by a predetermined amount. 2 timing circuit, (1
1) is a manual switch for recording, (12) is an input terminal for NTSC TV signals, (13) is a monitor terminal branched directly from the input terminal (12), (14) is a video signal processing circuit, and (15) is a video terminal. A recording circuit (1G) converts the signal generated by the signal processing circuit into a signal to be recorded on the magnetic disk (1) by the magnetic head (4), and (1G) converts the signal from the recording circuit (5) to the magnetic head (4). A recording switch (17) that controls the opening and closing of the supply synchronizes the rotation speed of the magnetic disk (1) with the TV vertical synchronization signal using the signal from the PG coil (3) based on the vertical synchronization signal from the video signal processing circuit (14). servo circuit.
（１８）は第１のタイミング回路（１０）からの信号及
び手動スイッチ（１１）からの信号を得た後の映像信号
処理回路（１４）からの垂直同期信号の到来と同時に記
録スイッチ（１６）を閉じ、次の垂直同期信号を得ると
同時に記録スイッチ（１６）を開放させるとともに駆動
回路（８）を動作させる信号を発生する制御回路である
。(18) is a recording switch (16) at the same time as the vertical synchronization signal arrives from the video signal processing circuit (14) after obtaining the signal from the first timing circuit (10) and the signal from the manual switch (11). This control circuit generates a signal to open the recording switch (16) and operate the drive circuit (8) at the same time as the next vertical synchronization signal is obtained.
次にその動作について説明する。入力端子（１２）に到
来する信号はモニタ端子（１３）を介してＴＶ受像＋ｉ
１（図示せず）に接続されているので、使用者はＴＶ受
受樋機映像を見ながら所要の映像を記録することになる
。Next, its operation will be explained. The signal arriving at the input terminal (12) is sent to the TV reception +i via the monitor terminal (13).
1 (not shown), the user records the desired video while viewing the TV receiver and gutter video.
全磁気ディスク（１）の回転数を３６０ Ｏｒｐｍ、ヘ
ッド送り機構（５）が所定量移動完了し磁気ヘッド（４
）を所定位置に、第２のタイミング回路（ｌＯ）の繰り
返し間隔「無限大」にそれぞれ設定したとする。この状
態で使用者が手動スイッチ（ＩＩ）を動作させると、制
御回路（１８）に入力される映像信号処理回路（１４）
からの垂直同期信号に同期して記録スイッチ（１６）が
投入されて、入力端子（１２）のＴＶ信号が磁気ディス
ク（１）に記録される。■フィールド分の信号を記録す
ると、制御回路（１８）は次に到来する垂直同期信号に
よって記録スイッチ（１６）を開放するとともに駆動回
路（８）を動作させるので、駆動源（６）によりヘッド
送り＠Ｗ（５）が移動し、その移動量が所定量に達する
とロータリエンコーダ（７）が信号を発生し、この信号
に応じ第１のタイミング回路（９）から制御回路（１８
）に送られる信号によって、制御回路（１８）は駆動回
路（８）へ停止信号を送り、ヘッド送り機構（５）が停
止する。これにより再度記録待機状態に戻り、次の使用
者による手動スイッチ（１１）の操作を待つ。The number of rotations of all magnetic disks (1) is increased to 360 Orpm, and the head feeding mechanism (5) completes movement by a predetermined amount, and the magnetic head (4) is rotated.
) is set at a predetermined position, and the repetition interval of the second timing circuit (lO) is set to "infinity". When the user operates the manual switch (II) in this state, the video signal processing circuit (14) is input to the control circuit (18).
The recording switch (16) is turned on in synchronization with the vertical synchronization signal from the input terminal (12), and the TV signal at the input terminal (12) is recorded on the magnetic disk (1). ■After recording the field worth of signals, the control circuit (18) opens the recording switch (16) in response to the next vertical synchronization signal and operates the drive circuit (8), so the head is moved by the drive source (6). @W (5) moves, and when the amount of movement reaches a predetermined amount, the rotary encoder (7) generates a signal, and in response to this signal, the first timing circuit (9) to the control circuit (18
), the control circuit (18) sends a stop signal to the drive circuit (8), and the head feeding mechanism (5) stops. This returns to the recording standby state and waits for the next user to operate the manual switch (11).
次に第２のタイミング回路（１０）の繰り返し間隔を１
秒と設定した場合の動作について説明する。Next, the repetition interval of the second timing circuit (10) is set to 1
The operation when set to seconds will be explained.
磁気ディスク（１）は３６００ｒｐｍで回転中、磁気ヘ
ッド（４）は所定位置にあるとする。手動スイッチ（１
１）が投入されると、制御回路（１８）は、第２のタイ
ミング回路（１０）からの１秒間隔の信号及び映像信号
処理回路（１４）からの垂直同期信号の待期状態となり
、双方の信号が入力されると、記録スイッチ（１６）が
投入され、上述と同様のシーケンスで記録。It is assumed that the magnetic disk (1) is rotating at 3600 rpm and the magnetic head (4) is at a predetermined position. Manual switch (1
1), the control circuit (18) enters a waiting state for a 1-second interval signal from the second timing circuit (10) and a vertical synchronization signal from the video signal processing circuit (14), and both When the signal is input, the recording switch (16) is turned on and recording is performed in the same sequence as described above.
ヘッド送りが行なわれる。記録動作開始から終了まで１
フィールド分１／６０秒、ヘッド送りは数１０ミリ秒で
終了するので１次の記録動作は次に第２のタイミング回
路（１０）からの信号が到、来して行なわれる。このよ
うに第２のタイミング回路（１０）の設定繰り返し間隔
１秒毎にＴＶ信号が磁気ディスク（１）に記録される。Head feeding is performed. 1 from start to end of recording operation
Since the field minute is 1/60 second and the head movement is completed in several tens of milliseconds, the first recording operation is performed when the signal from the second timing circuit (10) arrives next. In this way, the TV signal is recorded on the magnetic disk (1) at every 1 second set repetition interval of the second timing circuit (10).
以上説明したように手動スイッチ（１１）を操作するだ
けで入力端子（１２）の入力信号をモニタしながら自動
的に磁気ディスク（１）の未記録部分に所望の映像信号
を順次記録できる。As described above, by simply operating the manual switch (11), desired video signals can be automatically and sequentially recorded on the unrecorded portion of the magnetic disk (1) while monitoring the input signal of the input terminal (12).
［発明が解決しようとする問題点］
従来の映像信号記録装置は以上のように構成されている
ので、磁気ヘッド（４）が磁気ディスク（１）の記録許
容範囲を外れても操作する側に何ら情報が与えられない
ので、外れたまま記録操作を続けても記録が行なわれず
、所望映像を記録しそこなうといった問題点があった。[Problems to be Solved by the Invention] Since the conventional video signal recording device is configured as described above, even if the magnetic head (4) falls outside the permissible recording range of the magnetic disk (1), the operating side cannot Since no information is given, there is a problem in that even if the recording operation is continued with the disc disconnected, no recording is performed, resulting in failure to record the desired video.
この発明は上記のような問題点を解消するためになされ
たもので、記録ヘッドが記録許容範囲を外れたら使用者
に警報を発することができる映像信号記録装置を得るこ
とを目的とする。The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a video signal recording device that can issue a warning to the user when the recording head deviates from the permissible recording range.
［問題点を解決するための手段］
この発明にかかる映像信号記録装置は、記録ヘッドが円
盤状記録媒体の許容範囲外に達したことを検出する位置
検知器と、この位置検知器の検出動作に応じて制御信号
を出力する警報回路を設けたものである。[Means for Solving the Problems] The video signal recording device according to the present invention includes a position detector that detects when the recording head reaches outside the allowable range of the disk-shaped recording medium, and a detection operation of the position detector. It is equipped with an alarm circuit that outputs a control signal in accordance with the situation.
［作 用］
この発明においては、記録ヘッドが記録媒体の記録許容
範囲外の位置に達したら位置検出器でこれを検出して、
この検出動作に応じ警報回路が制御信号を出力し、モニ
タ信号を停止したり、断続させたり、モニタ信号に警報
信号を付加したり、警報音や警報表示光を発したりする
。[Function] In this invention, when the recording head reaches a position outside the permissible recording range of the recording medium, the position detector detects this, and
In response to this detection operation, the alarm circuit outputs a control signal to stop or intermittent the monitor signal, add an alarm signal to the monitor signal, or emit an alarm sound or alarm display light.
［実施例］ 以下この発明の一実施例を図について説明する。[Example] An embodiment of the present invention will be described below with reference to the drawings.
第１図はこの発明の一実施例を示す構成図であり、図に
おいて（１）〜（１８）は、第２図の同一符号と同−或
は相当部分を示している。即ち（１）は円盤状記録媒体
である磁気ディスク、（２）はこのディスク（１）を回
転駆動する駆動部であるモータ、（３）はＰＧコイル、
（４）は記録ヘッドである磁気ヘッド、（５） （６）
（８）はヘッド駆動部（１９）を構成するヘッド送り
機構、駆動源及び駆動回路、 （７）（０）は記録ヘッ
ドの移動量を検出するロータリエンコーダ及び第１のタ
イミング回路、 （１０）は第２のタイミング回路、
（１１）は記録用手動スイッチ、（１２）はＴＶ信号入
力端子、（１３）はモニタ信号出力端子、（１４）は映
像信号処理回路、（１５）は記録回路、（１６）は記録
スイッチ、 （１７）はサーボ回路、（１８）は制御回
路である。（２０）は、入力端子（１２）へのＴＶ信号
を制御入力端子（２０ａ）への信号に応じ出力端子（１
３）に出力したり停止したりする映像信号出力回路、（
２１）は磁気ヘッド（４）が磁気ディスク（１）の半径
方向への移動により、記録許容範囲外の位置に達した時
。FIG. 1 is a block diagram showing an embodiment of the present invention, and in the figure, (1) to (18) indicate the same or corresponding parts as the same reference numerals in FIG. That is, (1) is a magnetic disk which is a disc-shaped recording medium, (2) is a motor which is a drive unit that rotationally drives this disk (1), (3) is a PG coil,
(4) is a magnetic head which is a recording head, (5) (6)
(8) is a head feeding mechanism, drive source, and drive circuit that constitute the head drive unit (19); (7) and (0) are a rotary encoder and a first timing circuit that detect the amount of movement of the recording head; (10) is the second timing circuit,
(11) is a manual switch for recording, (12) is a TV signal input terminal, (13) is a monitor signal output terminal, (14) is a video signal processing circuit, (15) is a recording circuit, (16) is a recording switch, (17) is a servo circuit, and (18) is a control circuit. (20) outputs the TV signal to the input terminal (12) according to the signal to the control input terminal (20a).
3) A video signal output circuit that outputs and stops output to (
21) is when the magnetic head (4) reaches a position outside the permissible recording range due to movement in the radial direction of the magnetic disk (1).
作動する位置検知器、（２２）は位置検知器（２１）の
作動に応じ制御信号を出力する警報回路である。The activated position detector (22) is an alarm circuit that outputs a control signal in response to the activation of the position detector (21).
次にその動作について説明する。正常蒔の映像記録動作
は従来例と全く同様なので説明を省略する。操作者は従
来例と同様に所望画面を記録するために、入力端子（１
２）からの記録信号となる映像信号をＴＶ受像機を介し
て見ている。この場合所望画面がいつ到来するか一般的
には予測し震いのでＴＶ受像機から目を離さないことが
多い。記録操作を逐次性ない磁気ヘッド（４）が磁気デ
ィスク（１）の記録可能最内周まで到達し、そこでの記
録動作が完了すると、駆動源（６）によるヘッド送り機
構（５）の動作で位置検知器（２１）が作動する。これ
により警報回路（２２）が作動し、出力回路（２０）の
制御入力端子（２０ａ）に制御信号を出力し映像信号の
出力を停止させる。これによって出力端子（１２）には
モニタ用映像信号がなくなり、操作者の見ているＴＶ受
像機の受像は消え、操作者は装［が記録可能状態でなく
なったことを速かに察知することができる。Next, its operation will be explained. The video recording operation for normal sowing is completely the same as that of the conventional example, so the explanation will be omitted. The operator connects the input terminal (1) to record the desired screen as in the conventional example.
The video signal from 2), which is the recording signal, is viewed through a TV receiver. In this case, it is generally necessary to predict when the desired screen will appear, so the user often does not take his eyes off the TV receiver. When the magnetic head (4), which does not perform sequential recording operations, reaches the innermost recordable circumference of the magnetic disk (1) and completes the recording operation there, the head feeding mechanism (5) is operated by the drive source (6). The position detector (21) is activated. This activates the alarm circuit (22), outputs a control signal to the control input terminal (20a) of the output circuit (20), and stops outputting the video signal. As a result, there is no monitor video signal at the output terminal (12), the image on the TV receiver that the operator is watching disappears, and the operator quickly realizes that the device is no longer in a recordable state. I can do it.
上記実施例では警報回路（２２）により、出力信号を出
力しないようにした例を示したが、この出力信号を断続
させるようにしてもよい。又、この出力映像信号に文字
等の警報情報を付加したり、警報情報のみの映像信号に
切り換えるようにしてもよい。In the above embodiment, an example was shown in which the alarm circuit (22) did not output the output signal, but the output signal may be made intermittent. Further, warning information such as text may be added to this output video signal, or the video signal may be switched to a video signal containing only warning information.
また警報回路（２２）の出力制御信号で音を発生させる
発音部を設けたり上記１ｌｉ１１御信号で発光したり、
点滅する表示灯などの表示部を設けたりしてもよい。In addition, a sound generating unit is provided which generates a sound in response to the output control signal of the alarm circuit (22), and a light emitting unit is provided in response to the 1li11 control signal described above.
A display section such as a blinking indicator light may be provided.
［発明の効果コ
以上のようにこの発明によれば、記録ヘッドが記録媒体
の記録許容範囲外に達したら警報制御信号を出力するよ
う構成したので、記録操作を続けることが防止できる効
果を有している。[Effects of the Invention] As described above, according to the present invention, since the recording head is configured to output an alarm control signal when the recording head reaches outside the permissible recording range of the recording medium, it is possible to prevent the recording operation from continuing. are doing.
第１図はこの発明の一実施例を示す構成図、第２図は従
来の映像信号記録装置を示す構成図である。
図において（１）は円盤状記録媒体、（２）は駆動部、
（４）は記録ヘッド、 （１２）はＴＶ信号入力端子、
（１３）はモニタ信号端子、（１４）は映像信号処理回
路、（１５）は記録回路、（１６）は記録スイッチ、（
１８）は制御回路、 （１９）はヘッド駆動部、（２０
）は映像信号出力回路、 （２１）は位置検知器、（２
２）は警報回路である。
図中同一符号は同−或は相当部分を示す。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional video signal recording apparatus. In the figure, (1) is a disc-shaped recording medium, (2) is a drive unit,
(4) is a recording head, (12) is a TV signal input terminal,
(13) is a monitor signal terminal, (14) is a video signal processing circuit, (15) is a recording circuit, (16) is a recording switch, (
18) is a control circuit, (19) is a head drive unit, and (20) is a control circuit.
) is the video signal output circuit, (21) is the position detector, (2
2) is an alarm circuit. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (7)
する駆動部、上記円盤状記録媒体に信号を記録する記録
ヘッド、入力映像信号を上記円盤媒体に記録可能となる
よう変換する記録回路、この記録回路からの信号の上記
記録ヘッドへの供給を制御する記録スイッチ、上記記録
ヘッドを上記円盤状記録媒体の半径方向に駆動するヘッ
ド駆動部、及び上記円盤状記録媒体に記録しようとする
映像信号をモニタ用に出力する映像信号出力回路を備え
た映像信号記録装置において、上記記録ヘッドが上記円
盤状記録媒体の記録許容範囲外に達したことを検出する
位置検知器と、この位置検知器の検出動作に応じて制御
信号を出力する警報回路とを設けたことを特徴とする映
像信号記録装置。(1) A disk-shaped recording medium, a drive unit that rotationally drives the disk-shaped recording medium, a recording head that records signals on the disk-shaped recording medium, and a recording circuit that converts input video signals so that they can be recorded on the disk-shaped medium. , a recording switch that controls the supply of signals from the recording circuit to the recording head, a head drive unit that drives the recording head in the radial direction of the disc-shaped recording medium, and a recording switch that controls the supply of signals from the recording circuit to the recording head; In a video signal recording device equipped with a video signal output circuit that outputs a video signal for a monitor, a position detector detects when the recording head reaches outside a recording permissible range of the disc-shaped recording medium; 1. A video signal recording device, comprising: an alarm circuit that outputs a control signal in accordance with a detection operation of a device.
御信号に応じ、出力が停止されるようなされた特許請求
の範囲第１項記載の映像信号記録装置。(2) The video signal recording device according to claim 1, wherein output of the video signal output circuit is stopped in response to a control signal from the alarm circuit.
御信号に応じ出力映像信号が断続されるようなされた特
許請求の範囲第１項記載の映像信号記録装置。(3) The video signal recording device according to claim 1, wherein the video signal output circuit outputs the video signal intermittently in response to a control signal from the alarm circuit.
御信号に応じ出力映像信号に警報信号が付加されるよう
なされた特許請求の範囲第１項記載の映像信号記録装置
。(4) The video signal recording device according to claim 1, wherein the video signal output circuit adds an alarm signal to the output video signal in response to a control signal from the alarm circuit.
信号に応じ出力信号を警報信号のみに切り換えるような
された特許請求の範囲第１項記載の映像信号記録装置。(5) The video signal recording device according to claim 1, wherein the video signal output circuit switches the output signal to only the alarm signal in response to a control signal from the alarm circuit.
を発する発音部を備えたものである特許請求の範囲第１
〜第４項の何れかに記載の映像信号記録装置。(6) The above-mentioned alarm circuit is provided with a sounding section that emits a sound by outputting a control signal thereof.
- The video signal recording device according to any one of Items 4 to 4.
光する表示部を備えたものである特許請求の範囲第１〜
第４項の何れかに記載の映像信号記録装置。(7) The above-mentioned alarm circuit is provided with a display section that emits light according to the output of a control signal thereof.
The video signal recording device according to any one of Item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11102685A JPS61269262A (en) | 1985-05-23 | 1985-05-23 | Video signal recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11102685A JPS61269262A (en) | 1985-05-23 | 1985-05-23 | Video signal recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61269262A true JPS61269262A (en) | 1986-11-28 |
Family
ID=14550511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11102685A Pending JPS61269262A (en) | 1985-05-23 | 1985-05-23 | Video signal recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61269262A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0424978A2 (en) * | 1986-12-02 | 1991-05-02 | Mitsubishi Denki Kabushiki Kaisha | Optical disk drive device and information storage device |
| US5285431A (en) * | 1987-12-02 | 1994-02-08 | Mitsubishi Denki Kabushiki Kaisha | Information storage device with head position detection outside a user utilizable region and an optical disk drive device having target velocity-controlled head actuation |
-
1985
- 1985-05-23 JP JP11102685A patent/JPS61269262A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0424978A2 (en) * | 1986-12-02 | 1991-05-02 | Mitsubishi Denki Kabushiki Kaisha | Optical disk drive device and information storage device |
| EP0424978A3 (en) * | 1986-12-02 | 1992-01-08 | Mitsubishi Denki Kabushiki Kaisha | Optical disk drive device and information storage device |
| US5285431A (en) * | 1987-12-02 | 1994-02-08 | Mitsubishi Denki Kabushiki Kaisha | Information storage device with head position detection outside a user utilizable region and an optical disk drive device having target velocity-controlled head actuation |
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