JPS639177Y2 - - Google Patents
Info
- Publication number
- JPS639177Y2 JPS639177Y2 JP12458381U JP12458381U JPS639177Y2 JP S639177 Y2 JPS639177 Y2 JP S639177Y2 JP 12458381 U JP12458381 U JP 12458381U JP 12458381 U JP12458381 U JP 12458381U JP S639177 Y2 JPS639177 Y2 JP S639177Y2
- Authority
- JP
- Japan
- Prior art keywords
- reproducing
- button
- video
- still image
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Description
【考案の詳細な説明】
本考案は同心円状に複数の映像トラツクを所定
ピツチで設けたビデオシートを再生する静止画像
再生装置に関し、特に最良の静止画像を得ること
ができる様にしたものである。[Detailed Description of the Invention] The present invention relates to a still image reproducing device for reproducing a video sheet in which a plurality of concentric video tracks are provided at a predetermined pitch, and is particularly designed to be able to obtain the best still images. .
一般に第1図に示す如く回転磁気シート1上に
同心円状に複数の映像トラツク1a,1b,1c
…を所定ピツチで記録し、この同一映像トラツク
を繰返し再生してモニターテレビジヨン受像機の
映像画面上に静止画像を得る様にした静止画像再
生装置が提案されている。 Generally, as shown in FIG. 1, a plurality of video tracks 1a, 1b, 1c are arranged concentrically on a rotating magnetic sheet 1.
A still image reproducing apparatus has been proposed in which the same video track is recorded at a predetermined pitch and a still image is obtained on the video screen of a monitor television receiver by repeatedly reproducing the same video track.
斯る静止画像再生装置に於いては再生ヘツド2
が所望映像トラツクとジヤストトラツキングして
いるときは極めて良好な画像が得られる。 In such a still image reproducing device, the reproducing head 2
When the image is just tracking with the desired image track, an extremely good image can be obtained.
然しながら映像トラツクが記録時の何等かの原
因により円形とならず多少歪んだり楕円となつた
りしたときは静止画像再生装置の再生ヘツド2は
円形に走査するのである部分でジヤストトラツキ
ングする様にしても他の部分ではミストラツキン
グとなることがあり、斯る場合は良好な静止画像
が得られない場合がある欠点あつた。 However, if the video track is not circular due to some reason during recording and becomes somewhat distorted or elliptical, the playback head 2 of the still image playback device scans in a circle, so it is necessary to just track in a certain part. However, mistracking may occur in other areas, and in such cases, a good still image may not be obtained.
本考案は斯る点に鑑み映像トラツクが記録時の
何等かの原因により円形とならず多少歪んだり、
楕円となつた場合にも、この場合に於ける最良の
静止画像を得ることができるようにしたものであ
る。 In view of this, the present invention is designed to prevent the video track from becoming circular due to some reason during recording, and to be slightly distorted.
Even in the case of an ellipse, it is possible to obtain the best still image in this case.
以下第2図を参照しながら本考案静止画像再生
装置の一実施例につき説明しよう。 An embodiment of the still image reproducing apparatus of the present invention will be described below with reference to FIG.
第2図に於いて、3は回転磁気シート1を例え
ば30Hzで回転する回転駆動装置を示し、又再生用
磁気ヘツド2をこの回転磁気シート1に接触する
如く設ける。この再生用磁気ヘツド2は再生ヘツ
ド駆動装置4によりこの回転磁気シート1の径方
向に移動する如く構成する。この再生ヘツド駆動
装置4は例えばステツプモータ等より構成され、
例えば8つのパルスが供給される毎にこの再生用
磁気ヘツド2が1トラツクピツチdだけ移動する
如くなされている。この場合ステツプモータは正
逆回転が可能であり、再生用磁気ヘツド2の移動
を前進又は後退させることができる。5はシスコ
ンであり、このシスコン5に設けたホワード釦6
を1回操作することにより、このシスコン5より
前進制御信号を再生ヘツド駆動装置4に供給して
再生用磁気ヘツド2を1トラツクピツチdだけ前
進させる如くする。又7はリバース釦で、このリ
バース釦7を1回操作することにより、このシス
コン5より後退制御信号を再生ヘツド駆動装置4
に供給して再生用磁気ヘツド2を1トラツクピツ
チdだけ後退する如くする。 In FIG. 2, reference numeral 3 denotes a rotation drive device for rotating the rotating magnetic sheet 1 at, for example, 30 Hz, and a reproducing magnetic head 2 is provided so as to be in contact with the rotating magnetic sheet 1. The reproducing magnetic head 2 is configured to be moved in the radial direction of the rotating magnetic sheet 1 by a reproducing head drive device 4. This reproducing head driving device 4 is composed of, for example, a step motor, etc.
For example, the reproducing magnetic head 2 is moved by one track pitch d every time eight pulses are supplied. In this case, the step motor is capable of forward and reverse rotation, and the reproducing magnetic head 2 can be moved forward or backward. 5 is a system controller, and the forward button 6 provided on this system controller 5
By operating the system controller 5 once, a forward control signal is supplied from the system controller 5 to the reproducing head drive device 4 to advance the reproducing magnetic head 2 by one track pitch d. 7 is a reverse button, and by operating this reverse button 7 once, a reverse control signal is transmitted from the system controller 5 to the reproducing head drive device 4.
is supplied so that the reproducing magnetic head 2 is moved backward by one track pitch d.
又再生用磁気ヘツド2よりの再生信号をレベル
検出回路8に供給する。この場合9はタイミング
信号形成回路であり、このタイミング信号形成回
路9により例えば垂直同期信号より所定時間T離
れた位置のゲート信号を発生し、このゲート信号
により、そのタイミングでアナログ信号をデジタ
ル信号に変換するA−D変換器10に供給し、こ
のA−D変換器10の出力信号を再生ヘツド装置
制御回路11に供給する。又シスコン5よりの指
令信号がこの制御回路11に供給され、この制御
回路11よりのパルス信号を再生ヘツド駆動装置
4に供給する。この場合、この制御回路11はホ
ワード釦6又はリバース釦7が1回操作されたと
きは再生用磁気ヘツド2を1トラツクピツチdだ
け前進又は後退させると共にこの垂直同期信号よ
り時間T離れた位置の検出信号のレベルが最大と
なる如くループ動作する如くする。 Also, the reproduction signal from the reproduction magnetic head 2 is supplied to the level detection circuit 8. In this case, 9 is a timing signal forming circuit, and this timing signal forming circuit 9 generates, for example, a gate signal at a position a predetermined time T apart from the vertical synchronizing signal, and this gate signal converts an analog signal into a digital signal at that timing. The output signal of the A-D converter 10 is supplied to the reproduction head control circuit 11. Further, a command signal from the system controller 5 is supplied to this control circuit 11, and a pulse signal from this control circuit 11 is supplied to the reproduction head driving device 4. In this case, the control circuit 11 moves the reproducing magnetic head 2 forward or backward by one track pitch d when the forward button 6 or the reverse button 7 is operated once, and detects a position separated by a time T from the vertical synchronization signal. A loop operation is performed so that the signal level is maximized.
本例に於いてはシスコン5にトラツキング釦1
2を設ける。このトラツキング釦12はこれを操
作したときは上述ループ動作が行なわれない様に
すると共に、このトラツキング釦12の操作と同
時にホワード釦6又はリバース釦7を1回操作す
る毎に制御回路11より1個のパルスが再生ヘツ
ド駆動装置4に供給されこの再生用磁気ヘツド2
が例えば1/8トラツクピツチ1/8dだけ前進又は後
退する如く構成する。その他は従来の回転磁気シ
ート形の静止画像再生装置と同様に構成する。 In this example, tracking button 1 is pressed on system controller 5.
2 will be provided. When this tracking button 12 is operated, the above-mentioned loop operation is not performed, and each time the forward button 6 or reverse button 7 is operated once, the control circuit 11 pulses are supplied to the reproducing head drive device 4 and the reproducing magnetic head 2
For example, it is constructed so that the track moves forward or backward by 1/8 track pitch 1/8d. The rest of the structure is the same as that of a conventional rotating magnetic sheet type still image reproducing device.
本例は上述の如く構成されているので、1トラ
ツクピツチd前進又は後退して静止画像を再生し
たいときはホワード釦6又はリバース釦7を1回
操作する。このときは再生用磁気ヘツド2が1ト
ラツクピツチdだけ前進又は後退し、垂直同期信
号よりT時間後の再生信号が最大となる様にルー
プ動作する。この場合に於いて垂直同期信号より
T時間後以外の部分に於いてミストラツキングが
あるときは、トラツキング釦12を操作と同時に
ホワード釦6又はリバース釦7を操作し、映像画
面を見ながら再生用磁気ヘツド2を1/8トラツク
ピツチ1/8dづつ前進又は後退させて映像画面が
最良となる位置を決定する。従つて本考案に依れ
ば映像トラツク1a,1b,1c…が記録時の何
等かの原因により円形に歪みが生じていた場合、
又は楕円形となつた場合に於いても最良点で再生
することができ再生不能となることがない。 Since the present example is constructed as described above, when it is desired to move forward or backward by one track pitch and reproduce a still image, the forward button 6 or the reverse button 7 is operated once. At this time, the reproduction magnetic head 2 moves forward or backward by one track pitch d, and performs a loop operation so that the reproduction signal after T time after the vertical synchronization signal becomes the maximum. In this case, if there is mistracking in a part other than time T after the vertical synchronization signal, operate tracking button 12 and forward button 6 or reverse button 7 at the same time to play back while watching the video screen. The magnetic head 2 is moved forward or backward by 1/8 track pitch 1/8d to determine the position where the image screen is best. Therefore, according to the present invention, if the video tracks 1a, 1b, 1c, etc. are circularly distorted due to some reason during recording,
Or even if the shape becomes elliptical, it can be reproduced at the best point and will not become impossible to reproduce.
以上述べた如く本考案に依れば映像トラツクが
記録時の何等かの原因により円形とならず多少歪
んだり、楕円となつた場合にも、この場合に於け
る最良の静止画像を得ることができる利益があ
る。 As described above, according to the present invention, even if the video track is not circular due to some reason during recording, but is slightly distorted or becomes elliptical, it is possible to obtain the best still image in this case. There are benefits that can be made.
尚本考案は上述実施例に限らず本考案の要旨を
逸脱することなくその他種々の構成が取り得るこ
とは勿論である。 It goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations may be adopted without departing from the gist of the present invention.
第1図は本考案の説明に供する線図、第2図は
本考案静止画像再生装置の一実施例を示す構成図
である。
1は回転磁気シート、2は再生用磁気ヘツド、
4は再生ヘツド駆動装置、5はシスコン、6はホ
ワード釦、7はリバース釦、11は制御回路、1
2はトラツキング釦である。
FIG. 1 is a diagram for explaining the present invention, and FIG. 2 is a configuration diagram showing an embodiment of the still image reproducing apparatus of the present invention. 1 is a rotating magnetic sheet, 2 is a magnetic head for reproduction,
4 is a reproduction head drive device, 5 is a system controller, 6 is a forward button, 7 is a reverse button, 11 is a control circuit, 1
2 is a tracking button.
Claims (1)
設けたビデオシートを再生する静止画像再生装置
において、上記映像トラツクに対接する再生ヘツ
ドを1トラツクピツチづつ上記ビデオシートの中
心側又は外側へ移動させる移動釦を設けると共
に、上記再生ヘツドを1トラツクピツチの所定数
分の1移動させるトラツキング釦を設け、該トラ
ツキング釦の操作による上記再生ヘツドの送り方
向を上記移動釦の操作により決定するようにした
ことを特徴とする静止画像再生装置。 In a still image reproducing device for reproducing a video sheet in which a plurality of video tracks are arranged concentrically at a predetermined pitch, a moving button is provided for moving a reproducing head that is in contact with the video track one track pitch at a time toward the center or outside of the video sheet. In addition, a tracking button for moving the playback head by a predetermined number of one track pitch is provided, and the direction in which the playback head is fed by operating the tracking button is determined by the operation of the movement button. Still image playback device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12458381U JPS5830382U (en) | 1981-08-21 | 1981-08-21 | Still image playback device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12458381U JPS5830382U (en) | 1981-08-21 | 1981-08-21 | Still image playback device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5830382U JPS5830382U (en) | 1983-02-28 |
JPS639177Y2 true JPS639177Y2 (en) | 1988-03-18 |
Family
ID=29918448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12458381U Granted JPS5830382U (en) | 1981-08-21 | 1981-08-21 | Still image playback device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5830382U (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59185482A (en) * | 1983-04-05 | 1984-10-22 | Sony Corp | Auto-tracking device |
JPS60111199U (en) * | 1983-12-28 | 1985-07-27 | 神田通信工業株式会社 | Piezoelectric electroacoustic transducer |
-
1981
- 1981-08-21 JP JP12458381U patent/JPS5830382U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5830382U (en) | 1983-02-28 |
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