JPS593708A - Magnetic recording and reproducing method - Google Patents
Magnetic recording and reproducing methodInfo
- Publication number
- JPS593708A JPS593708A JP11083982A JP11083982A JPS593708A JP S593708 A JPS593708 A JP S593708A JP 11083982 A JP11083982 A JP 11083982A JP 11083982 A JP11083982 A JP 11083982A JP S593708 A JPS593708 A JP S593708A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- magnetic head
- tape
- magnetic
- signal
- 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
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/02—Analogue recording or reproducing
- G11B20/06—Angle-modulation recording or reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は磁気記録再生方法に関するものであるロ
一般に、磁気記録テープに於ける信号品位は磁気ヘッド
との相対速度が速い程周波数特性が良好となり、また、
録音帯の巾が広い程、８Ｎ比が良好となるが、近年広く
使用さｎ始めているビデオテープレコーダーの音声記録
部等は上記した原則に逆行する条件下にあり、極めて悪
い音質に甘んじている現状にある。即ち、オーゾンリー
ルテーゾレコーダーではテープ巾約６２１、走行速度９
．５ｃｎ／ｓｅｅ、フイリツゾ社規格のカセットテープ
し・コーダーでもテープ中約３．８鵬、走行速度４−７
５ ｃｍ ／ ｓｅｃであるに対し、ＶＨ８万式方式デ
オテープレコーダーの音声記録部においてはテープの記
録中１■、走行速！３３．３５１１！１１ ／ １ｉｅ
ｌ：であり、１／３倍速の長時間モーＦ”Ｋあっては走
行速度が１１．１２ｗｎ／ｓｅｃとなるため、ワウ７ラ
ツター特性の悪化も含めて上記した他の録音方式に比較
して、非常に悪い条件下にある従って竹に１／３倍速モ
ードにあっては音質の劣化が著しいため改善が切望さｎ
ていた。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording and reproducing method. In general, the signal quality of a magnetic recording tape is such that the faster the relative speed to the magnetic head, the better the frequency characteristics.
The wider the recording band, the better the 8N ratio, but the audio recording sections of video tape recorders, which have become widely used in recent years, are under conditions that go against the above principle, and are content with extremely poor sound quality. In the current situation. In other words, for the Ozone Reel Teso recorder, the tape width is approximately 621, and the running speed is 9.
．． 5 cn/see, cassette tape and coder according to Filitsuzo company's standards, approximately 3.8 centimeters in the tape, running speed 4-7
5 cm/sec, whereas in the audio recording section of the VH 80,000-type video tape recorder, the running speed is 1cm/sec while recording the tape! 33.3511!11/1ie
l:, and with 1/3x speed long-time mode F"K, the running speed is 11.12wn/sec, so compared to the other recording methods mentioned above, including the deterioration of the wah-7 rutter characteristic. However, the sound quality deteriorates significantly in 1/3x speed mode, so improvements are desperately needed.
was.
本発明の目的は、上記した磁気記録再生方法の欠点を解
消し、低テープ走行時においても良好な音質が得らｎる
ようにした磁気記録再生方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic recording and reproducing method which eliminates the drawbacks of the above-mentioned magnetic recording and reproducing method and allows good sound quality to be obtained even when the tape is running at a low speed.
以下１本発明の実施例を図面に基づいてｉ明する。An embodiment of the present invention will be explained below based on the drawings.
図中、ＴはＶＴＲ用磁気記録テープであって、ＴＩは音
声記録トラック、ＴＩは画像紀録トラック全夫々示し、
人は上記音声記録トラックに磁気記録するための装置及
び回路全体を示す。In the figure, T indicates a magnetic recording tape for VTR, TI indicates an audio recording track, TI indicates all image recording tracks,
One shows the entire apparatus and circuit for magnetic recording on the audio recording track.
１は入力部ＩＮから入力さｎた信号ｉｆ：ＦＭ変調する
と共にこｔｌ、を記録するだめの変調記録回路であって
その出力部は磁気ヘッド２に接続さ牡ている。７は磁気
ヘッド２からの信号を増巾、復調する回路である。Ｓは
この記録時、再生時の切換回路金示す。磁気ヘッド２は
磁気記録テープＴの走行方向に対して垂直方向に振動す
るようになってお９、実施例では上記磁気ヘッド２は機
器（図示しない〕のシャーシー３に支持部材４を介して
弾力的に支持されており、支持部材４には磁気ヘッド２
金伽動させるための励振装置５が取り付けらｎている。Reference numeral 1 denotes a modulation recording circuit for performing FM modulation on a signal if input from an input section IN and recording the signal tl, and its output section is connected to a magnetic head 2. 7 is a circuit for amplifying and demodulating the signal from the magnetic head 2; S indicates a switching circuit during recording and reproduction. The magnetic head 2 is configured to vibrate in a direction perpendicular to the running direction of the magnetic recording tape T. In the embodiment, the magnetic head 2 is elastically attached to a chassis 3 of a device (not shown) via a support member 4. The magnetic head 2 is supported on the support member 4.
An excitation device 5 for moving the metal is attached.
この励振装置として図示例では圧電素子が示されて゛い
る。励振装置５、即ち、圧電素子は走査回路６から出力
さｎる駆動信号により駆動さ扛るようになっており、磁
気ヘッド２が振動することによＶ第２図以下に示すよう
ＶＣ＠気記録テープＴ上には変調記録回路１によりＦＭ
変調さｎた信号が新録音帯の軌跡７は例えば、第２図に
示すような正弦波状を呈し、磁気ヘッド２と磁気記録テ
ープＴとの相対速度を大巾に高速化することができ、高
い周波数の信号の記録が可能になる。In the illustrated example, a piezoelectric element is shown as this excitation device. The excitation device 5, that is, the piezoelectric element is driven by a drive signal outputted from the scanning circuit 6, and when the magnetic head 2 vibrates, the VC@air as shown in FIG. FM is recorded on the recording tape T by the modulation recording circuit 1.
The locus 7 of the new recording band of the modulated signal exhibits, for example, a sine wave shape as shown in FIG. 2, and the relative speed between the magnetic head 2 and the magnetic recording tape T can be greatly increased. It becomes possible to record high frequency signals.
また、第３図に示すように折り返し点Ｐが音声記録トラ
ックＴｌ外に位置するように磁気ヘッド２を励振させる
ようにしても同等の効果を得ることができる。Further, as shown in FIG. 3, the same effect can be obtained even if the magnetic head 2 is excited so that the turning point P is located outside the audio recording track Tl.
なお、磁気ヘッド２と磁気記録テープＴとの相対速度を
高速化することに加えて磁気ヘッド２のギャップを狭く
設定することによって更に高い周波数の信号の記録が出
来る。従ってＦＭ記録周波数を高くとる事が出来るので
音声多重信号を変調記録するＣとも容易となる。また、
上記磁気ヘッド２を２チヤンネルとし、夫々別個の信号
（Ｒ，Ｌ）を記録させるようにしてもよく、この場合、
第４図に示すように往路（実線）だけ磁気ヘッド２で信
号を記録させ復路（破線）においては信号の記録（帰線
消去）をしないようにすれば録音帯は図示の如くノマイ
アス状となり、テープ面の有効利用をも図ることができ
る。In addition to increasing the relative speed between the magnetic head 2 and the magnetic recording tape T, by setting the gap between the magnetic head 2 narrower, it is possible to record signals of even higher frequency. Therefore, since the FM recording frequency can be set high, it becomes easy to modulate and record the audio multiplexed signal. Also,
The magnetic head 2 may have two channels, each recording separate signals (R, L); in this case,
As shown in FIG. 4, if the magnetic head 2 records signals on the outward path (solid line) and does not record signals (blanking) on the return path (broken line), the recording band will be in a nominal shape as shown in the figure. It is also possible to effectively utilize the tape surface.
又隣り合った記録トラック間のクロスＨ−ニクを減らす
ため２チヤンネルの記録ヘッドにそれぞｎアジマス角を
持たせる事にエフクロストークを減少させる事が出来る
。更に記録ヘッドを４．６．８個と偶数個にして記録再
生チャンネルを増やす事も可能である。又記録トラック
間にカードバンドを用いｎば奇数チャンネルも記録再生
可能である。再生の場合は上記記録さ几たテーゾＴ上を
垂直方向にトレースする事により記録された信号を磁気
ヘッド２により取り出し切換回路Ｓを経て７再生増巾復
調回路により再生信号を得る。Furthermore, in order to reduce the cross H-nik between adjacent recording tracks, the E-cross talk can be reduced by providing the recording heads of two channels each with an n azimuth angle. Furthermore, it is also possible to increase the number of recording and reproducing channels by using an even number of recording heads, such as 4, 6, and 8 recording heads. Also, if a card band is used between recording tracks, recording and reproduction of odd numbered channels is also possible. In the case of reproduction, the recorded signal is taken out by the magnetic head 2 by vertically tracing the recorded TESO T, passed through the switching circuit S, and the reproduced signal is obtained by the 7 reproduction amplification demodulation circuit.
又走査回路は記録再生時にトラック゛を正確に磁気ヘッ
ドヲトシ′−スさせるためにトラッキング信号を用いる
ことも出来る。The scanning circuit can also use a tracking signal to accurately position the magnetic head on a track during recording and reproduction.
本発明に係る磁気記録再生方法に工ｎば、記録すべき信
号をＦＭ変調させると共に磁気ヘッドを磁気記録テープ
の走行方向に対して垂直方向に振動させ、これによりｌ
’Ｍ変調さｎ九信号を斜め方向に記録せしめるようにし
たから、磁気ヘッドと磁気記録テープとの相対速度を大
巾に高速化することができ高い周波数の信号の記録特性
を著しく改善することができる。また信号ｉＦＭ変調さ
せることにより記録再生特性の改善を行う、又、音声多
重信号をも記録することができ、さらに、ＦＭ変調の特
性としてワウ７ラツクーをも改善することができるなど
、特に低テープ速度用機器の記録方法として優れた特長
がある。In the magnetic recording and reproducing method according to the present invention, the signal to be recorded is FM modulated and the magnetic head is vibrated in a direction perpendicular to the running direction of the magnetic recording tape.
'Since the M-modulated n9 signal is recorded diagonally, the relative speed between the magnetic head and the magnetic recording tape can be greatly increased, and the recording characteristics of high-frequency signals can be significantly improved. I can do it. In addition, the recording and playback characteristics are improved by iFM modulating the signal, and it is also possible to record audio multiplexed signals.Furthermore, as a characteristic of FM modulation, it is also possible to improve the wah-7-raku effect, especially for low tapes. It has excellent features as a recording method for speed equipment.
図面は本発明に係る磁気記録再生方法の実施例を示し、
第１図は全体の模式図、第２図乃至第４図は磁気記録テ
ープ上の録音帯の軌跡を示す平面図である。
１：変調記録増巾回路、２：磁気ヘッド、５：励振装置
としての圧電素子、７；再生増巾復調回路、８：記録再
生切換回路、６：走査回路。
第３図The drawings show an embodiment of the magnetic recording and reproducing method according to the present invention,
FIG. 1 is an overall schematic diagram, and FIGS. 2 to 4 are plan views showing the trajectory of a recording band on a magnetic recording tape. 1: Modulation recording amplification circuit, 2: Magnetic head, 5: Piezoelectric element as an excitation device, 7: Reproduction amplification demodulation circuit, 8: Recording/reproduction switching circuit, 6: Scanning circuit. Figure 3
Claims (1)
せると共に磁気ヘッドを磁気記録テープの走行方向に対
して垂直方向に振動させ、ＦＭ変調さｎた信号を上記磁
気ヘッドに供給して磁気記録テープ上へ記録しそして再
生することを特徴とする磁気記録再生方法。In a tape recorder, the signal to be recorded is FM-modulated and the magnetic head is vibrated in a direction perpendicular to the running direction of the magnetic recording tape, and the FM-modulated signal is supplied to the magnetic head and transferred onto the magnetic recording tape. A magnetic recording and reproducing method characterized by recording and reproducing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11083982A JPS593708A (en) | 1982-06-29 | 1982-06-29 | Magnetic recording and reproducing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11083982A JPS593708A (en) | 1982-06-29 | 1982-06-29 | Magnetic recording and reproducing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS593708A true JPS593708A (en) | 1984-01-10 |
Family
ID=14545965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11083982A Pending JPS593708A (en) | 1982-06-29 | 1982-06-29 | Magnetic recording and reproducing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS593708A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0573850A (en) * | 1991-09-18 | 1993-03-26 | Fujitsu Ltd | Magnetic storage device |
| US5793560A (en) * | 1991-09-18 | 1998-08-11 | Fujitsu Limited | Storage device having vibratory head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4940902A (en) * | 1972-08-25 | 1974-04-17 |
-
1982
- 1982-06-29 JP JP11083982A patent/JPS593708A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4940902A (en) * | 1972-08-25 | 1974-04-17 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0573850A (en) * | 1991-09-18 | 1993-03-26 | Fujitsu Ltd | Magnetic storage device |
| US5793560A (en) * | 1991-09-18 | 1998-08-11 | Fujitsu Limited | Storage device having vibratory head |
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