JPS5888803A - Disk recording and reproducing system - Google Patents
Disk recording and reproducing systemInfo
- Publication number
- JPS5888803A JPS5888803A JP18526181A JP18526181A JPS5888803A JP S5888803 A JPS5888803 A JP S5888803A JP 18526181 A JP18526181 A JP 18526181A JP 18526181 A JP18526181 A JP 18526181A JP S5888803 A JPS5888803 A JP S5888803A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- reproducing
- head
- disk
- azimuth angle
- 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
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】 発明の技術分野 本発明は記録再生可能なビデオディスクに関する。[Detailed description of the invention] Technical field of invention The present invention relates to a recordable and playable video disc.
発明の技術的背景とその問題点
従来ビデオディスクとしては再生のみ可能なものが知ら
れており、これに対し記録再生可能なものとして磁気ビ
デオディスクヤ半導体ビデオディ□スク等の研究が行な
われている。これらは或１度の時間、例えば（資）分又
は１時間の記録再生を行なう丸め、従来Ｋを９極めて高
密度な記録を行なう必賛がある。Technical background of the invention and its problems Conventionally, video disks that can only be played back have been known, but research has been conducted on magnetic video disks, semiconductor video disks, etc. that can be recorded and played back. There is. These are rounded to perform recording and reproduction of one time, for example, minutes or one hour, and conventionally K9 is required to perform extremely high-density recording.
発明の目的
本発明の目的は、高密度化され、！−がも画質の優れた
記録再生方式を提供することにある。OBJECT OF THE INVENTION The object of the invention is to densify and! - Another object is to provide a recording and reproducing method with excellent image quality.
発明の構成
本発明方式により記録された記録ディスクを第１図に示
す。図においてｌは記録ディスク、２ｉ。Structure of the Invention A recording disk recorded by the method of the present invention is shown in FIG. In the figure, l is a recording disk and 2i.
２１２ｍ・・・は記録トラックである。本発明によれば
記録ディスク１０１回転毎に記録ヘッドの記録角度を切
替るとともに、この切替はビデオ信号の垂直ブランキン
グ期間α内で行なわれる０例えば１鍮トラツク２１では
角度人で記録され、垂直ブランキング期間の後は角度β
で記録される０発明の実施例
第２図に本発明の一実施例を示す。図において１０はｗ
Ａ＠駆動される磁気ディスクであり、その半径方向へ移
動可能なＩ碌再生ヘッド１１に対向しているｏｌｅ碌再
主再生ヘッド１１替部１２０制御信号に応じ文１機械的
に回転可能である。すなわち、第３図に示すように、記
録再生ヘッドのへラドギャップ方向は記録トラック方向
と垂直な方向に対して土一度だけ傾いたアジマス角度人
及びＢを取り得る。切替部１２は垂直ブランキング検出
部１３の出力によって上記角度人又はＢＫ切普るｔので
ある０嬉２図において、記録の際は記録されるテレビジ
冒ン信号が記録再生ヘッド１１に供給され、磁気ディス
クＩＯＫ記碌される。一方、このテレビジ１ン信号は垂
直ブランキング検出＄１３にも供給されておシ、垂直ブ
ランキング期間になると１垂直ブランキング検出部１３
の出力信号により切換部１２が角度切替を指示する制御
信号を出力し、記録再生ヘッド１１のアジマス角度が切
替られる。再生の際も全く同様に、再生信号中の垂直ブ
ランキング期間にアジマス角度が切替えられる。212m... is a recording track. According to the present invention, the recording angle of the recording head is switched every time the recording disk 101 rotates, and this switching is performed within the vertical blanking period α of the video signal. After the blanking period, the angle β
Embodiment of the Invention Recorded in FIG. 2 shows an embodiment of the invention. In the figure, 10 is w
It is a magnetic disk driven by A@, and is mechanically rotatable in accordance with the control signal of the OLE reproducing main reproducing head 11 facing the I reproducing head 11 which is movable in the radial direction. . That is, as shown in FIG. 3, the head gap direction of the recording/reproducing head can take an azimuth angle B which is inclined by one degree with respect to the direction perpendicular to the recording track direction. The switching unit 12 uses the output of the vertical blanking detection unit 13 to supply the television signal to be recorded to the recording/reproducing head 11 during recording in the above-mentioned angle or BK cutoff. The magnetic disk IOK is recorded. On the other hand, this television signal is also supplied to the vertical blanking detector 13, and during the vertical blanking period, the 1 vertical blanking detector 13
In response to the output signal, the switching section 12 outputs a control signal instructing angle switching, and the azimuth angle of the recording/reproducing head 11 is switched. During reproduction, the azimuth angle is similarly switched during the vertical blanking period of the reproduced signal.
発明の効果
このように本発明によればビデオディスクにアジマス記
録を用いたことにより、各トラック間に間隙を設けるこ
となく高密度に記録することができるとともに、再生に
於いてトラッキングが必ずしも十分でなく隣接するトラ
ックに１九がってしまう九場合でもアジマス角度に応じ
た再生ヘッドの角度差により十分のφを保ちながら再生
することができるのでトラッキングが容易となる利点が
ある。Effects of the Invention As described above, according to the present invention, by using azimuth recording on a video disc, it is possible to record at high density without creating gaps between each track, and tracking is not necessarily sufficient during playback. Even in the case where the recording head deviates from the adjacent track by 19, it is possible to perform reproduction while maintaining a sufficient φ due to the angular difference of the reproduction head according to the azimuth angle, which has the advantage of facilitating tracking.
まえ、アジマス角度の切替がテレビジ冒ン信号の垂直プ
ランキング信号に同期して行なわれるので、記録再生の
場合、切替のタイミングに多少の嗜閣のずれがあっても
再生ｌｌ１ｉ面上に映像のみだれが構われないようにす
ることができる。Since the switching of the azimuth angle is performed in synchronization with the vertical planking signal of the TV display signal, in the case of recording and playback, even if there is a slight shift in the switching timing, the image will not be displayed on the playback surface. You can make it so that you don't have to worry about it.
発明の変形例
なお、本発明によれば、再生信号の８４の豊水に応じて
記録再生トラックのピッチを変えて記録再生を行なうこ
とができる。すなわち、特に画質を重視する場合には同
一記録再生ヘッドを使用しトラック間のピッチを広くし
て記録再生すれば、紀鍮時間は短くなるが８７Ｎの良い
記録再生を行なうことができるＯ逆に１画質に重きを置
くことなく紀鎌時間を長く希望するときは、トラック間
のピッチを挾くして記録再生すればよいＯまた上記実施
例ではへラドアジマス角度を機械的に切替するｔのであ
ったが、予じめアジマス角度の異なる２−のヘッドを配
置しておき、これらを電気的に切替することもできる。Modifications of the Invention According to the present invention, recording and reproducing can be performed by changing the pitch of the recording and reproducing track according to the 84 degrees of reproduction signal. In other words, if image quality is particularly important, if you use the same recording and reproducing head and widen the pitch between tracks, you can record and reproduce with a good 87N, although the recording time will be shorter. 1. If you want a long recording time without placing emphasis on image quality, you can record and reproduce by interpolating the pitch between tracks.Also, in the above embodiment, the gear azimuth angle was mechanically switched. However, it is also possible to arrange two heads with different azimuth angles in advance and switch between them electrically.
発明の応用例
なお１本発明者等は、磁気高密度記録再生として、再生
ヘッドの高周波回路に挿入され九ノく−マロイ又はＹＩ
Ｇ等のμ又はＱの変化する磁性材料を含む高周波回路に
加えた高周波の出力電圧が紀鎌磁界の変化により変化す
ることを応用した新しい磁気紀録再生方゛式を提案して
いる（特−昭５５−ｔｔ０３４０）。これを本発明に応
用することによって超高密度の磁気記録再生が可能Ｋｆ
ｋシ１例えば記録消去再生可能でかつ長時間記録可能な
磁気配録方式のビデオディスク方式とすることが可能と
なる０Application Examples of the Invention First, the inventors have discovered that Ku-Malloy or YI is inserted into the high-frequency circuit of a reproducing head for magnetic high-density recording and reproducing.
We have proposed a new magnetic record reproducing method that applies the fact that the high-frequency output voltage applied to a high-frequency circuit containing a magnetic material whose μ or Q changes, such as G, changes due to changes in the Kikama magnetic field. 1980-tt0340). By applying this to the present invention, ultra-high density magnetic recording and reproducing is possible Kf
For example, it becomes possible to use a magnetic recording video disk system that allows recording, erasing, and replaying as well as long-term recording.
！ｓ１図は本発明による記録ディスクのパターンを示す
図、第２図は本発明の一実施例を示す図、第３図はヘッ
ドのアジマス角度を説明するための図である。
１０・・・磁気ディスク、 １１・・・記録再生ヘッド
。! s1 is a diagram showing a pattern of a recording disk according to the present invention, FIG. 2 is a diagram showing an embodiment of the present invention, and FIG. 3 is a diagram for explaining the azimuth angle of the head. 10... Magnetic disk, 11... Recording/reproducing head.
Claims (4)
方式において、前記ディスクの１回転毎に１鍮又は再生
ヘッドのアジマス角度を変えて記録再生するとともに、
前記ヘッドのアジマス角度の切替を前記ビデオ信号の垂
直ブランキング期間中に行なうことを特徴とするディス
ク記録再生方式。(1) In a method of recording and reproducing video signals on a rotating disk, recording and reproducing are performed by changing the azimuth angle of the reproducing head by one angle for each revolution of the disk, and
A disc recording and reproducing system characterized in that the azimuth angle of the head is switched during a vertical blanking period of the video signal.
的、に変更することを特徴とする特許Ｓ末の範囲第１項
記載のディスク記録再生方式。(2) The disk recording and reproducing method according to item 1 of the end of Patent S, characterized in that the azimuth angle is switched by mechanically changing the arrangement of the head.
を持つ２ｇのヘッドを有し、これらのヘットの選択を電
気的に行なうことを特徴とする特＃ｌ！Ｆ＃１１求ＯＩ
Ｉ囲＄１項記載のディスク記録再生方式。(3) The azimuth angle switching is characterized by having 2g heads with different azimuth angles in advance, and selecting these heads electrically! F#11 OI
Disk recording and reproducing method described in Section I, Section $1.
として前記磁気記録媒体の磁界により高周波における声
又はＱが変化を利用する磁性材料、を待った鳥周波回路
を使用し、記録磁界による高周波電圧の変化を利用して
磁気紀鍮再生出力を得ることを特徴とする特許請求の範
囲第１項記載のディスク記録再生方式。(4) The rotating disk is made of a magnetic recording medium, and as a reproduction method, a bird frequency circuit using a magnetic material that utilizes changes in voice or Q at high frequencies due to the magnetic field of the magnetic recording medium is used, and the high frequency voltage is generated by the recording magnetic field. 2. The disk recording and reproducing method according to claim 1, wherein a magnetic resonance reproduction output is obtained by utilizing the change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18526181A JPS5888803A (en) | 1981-11-20 | 1981-11-20 | Disk recording and reproducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18526181A JPS5888803A (en) | 1981-11-20 | 1981-11-20 | Disk recording and reproducing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5888803A true JPS5888803A (en) | 1983-05-27 |
Family
ID=16167721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18526181A Pending JPS5888803A (en) | 1981-11-20 | 1981-11-20 | Disk recording and reproducing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5888803A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113508A (en) * | 1982-12-21 | 1984-06-30 | Sony Corp | Recording and reproducing device of magnetic disc |
| JPS6066164A (en) * | 1983-09-21 | 1985-04-16 | Mochida Pharmaceut Co Ltd | Separating unit for blood plasma component |
-
1981
- 1981-11-20 JP JP18526181A patent/JPS5888803A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113508A (en) * | 1982-12-21 | 1984-06-30 | Sony Corp | Recording and reproducing device of magnetic disc |
| JPS6066164A (en) * | 1983-09-21 | 1985-04-16 | Mochida Pharmaceut Co Ltd | Separating unit for blood plasma component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3908080A (en) | Method of making an extended play video disc record | |
| US4872070A (en) | System and method for high speed video tape reproduction | |
| US4135205A (en) | Skip field recorder with audio multiplexer | |
| US5121259A (en) | Video tape recorder with after-recording capability | |
| US3908076A (en) | Extended play videodisc recording system | |
| JPH03291077A (en) | Picture reproducing device | |
| JPS58215881A (en) | Method of displaying video information and reproducer | |
| JPS5888803A (en) | Disk recording and reproducing system | |
| JPS608525B2 (en) | Magnetic recording and reproducing method | |
| JPS6348475B2 (en) | ||
| JPS61131261A (en) | Magnetic recording and reproducing device | |
| JPS60197937A (en) | Videodisk | |
| JPS6055886B2 (en) | Magnetic recording and reproducing method | |
| JPS5883490A (en) | Magnetic recorder and reproducer | |
| JPS6217433B2 (en) | ||
| JPS58155505A (en) | Video disc recording and reproducing system | |
| JPS59127203A (en) | Magnetic recording and reproducing device | |
| JPH041403B2 (en) | ||
| JPS63179675A (en) | Television signal recording method for rotary magnetic recording medium | |
| JPH04113571A (en) | Information recorder | |
| JP2697108B2 (en) | Magnetic recording / reproducing device | |
| EP0723377A3 (en) | Recording/reproducing method of digital video tape for trick-play operation and recorder/reproducer suitable therefor | |
| JPS6117202A (en) | Video tape recorder for multiple recording | |
| JPH03789Y2 (en) | ||
| JP3336763B2 (en) | Playback device |