JPH0576084B2 - - Google Patents
Info
- Publication number
- JPH0576084B2 JPH0576084B2 JP520685A JP520685A JPH0576084B2 JP H0576084 B2 JPH0576084 B2 JP H0576084B2 JP 520685 A JP520685 A JP 520685A JP 520685 A JP520685 A JP 520685A JP H0576084 B2 JPH0576084 B2 JP H0576084B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- head
- video
- signal
- magnetic 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 - Lifetime
Links
- 230000005236 sound signal Effects 0.000 claims description 22
- 238000010586 diagram Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004043 responsiveness Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明はヘリカルスキヤン方式ビデオテープレ
コーダー（以下VTRと記す）等の回転磁気ヘツ
ドを有した磁気記録再生装置に関し、特に回転ヘ
ツドにて時間圧縮したオーデイオ信号を記録再生
する様に構成された磁気記録再生装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic recording and reproducing apparatus having a rotating magnetic head such as a helical scan video tape recorder (hereinafter referred to as VTR), and in particular to a magnetic recording and reproducing apparatus having a rotating magnetic head such as a helical scan video tape recorder (hereinafter referred to as VTR). The present invention relates to a magnetic recording and reproducing device configured to record and reproduce signals.
従来の技術
従来の磁気記録再生装置としては、例えば特開
昭59−127203号公報に示されている。BACKGROUND ART A conventional magnetic recording/reproducing device is disclosed in, for example, Japanese Patent Laid-Open No. 127203/1983.
第９図はこの従来の磁気記録再生装置の回転ド
ラム装置平面図を示す。ここで上記公報において
は磁気ヘツドがアジムス角を持たない場合の構成
で記載されているがここでは互いに逆方向のアジ
ムス角を有する磁気ヘツドを用いた構成で説明す
る。第９図で磁気テープ１は回転ドラム２に巻き
付き図中矢印ａ方向へ定速走行する。上記回転ド
ラム２は図中矢印ｂ方向へ高速回転し、互いに逆
方向のアジムス角を有する一対の記録再生用磁気
ヘツド３Ａ，３Ｂと、一対の再生専用磁気ヘツド
４Ａ，４Ｂがそれぞれ180度の間隔で配置されて
いる。また上記一対の再生専用ヘツド４Ａ，４Ｂ
は変速再生時におけるトラツキング制御を行うた
めにそれぞれ電気機械変換素子、例えば圧電素子
で構成されたバイモルフ板５Ａ，５Ｂ上に設けら
れ、回転高さ位置が変位し制御できる様構成して
ある。さらに再生専用磁気ヘツド４Ａ，４Ｂは記
録再生用磁気ヘツド３Ａ，３Ｂに対して2.5フイ
ールド進んだ位置に信号を記録する様配置されて
いる。以上の構成でまず記録時には第１０図の如
く記録再生用磁気ヘツド３Ａで記録トラツク６
A1，６A2，……を、また３Ｂで６B1，６B2……
をそれぞれ形成する、この時ビデオ信号は入力信
号と実時間で記録され、オーデイオ信号は第１１
図に示す如く１フイールド期間を時間軸圧縮し、
ビデオ信号の後にビデオ信号を記録したヘツドで
記録する。また再生時ビデオ系は前記の記録再生
用磁気ヘツド３Ａ，３ＢでビデオトラツクTVを
再生し、オーデイオ系は第９図の再生専用磁気ヘ
ツド４Ａ，４Ｂで時間軸圧縮して記録したオーデ
イオトラツクTAを記録時より2.5フイールド進ん
だ位相で再生した後エラー訂正等の信号処理を行
い記録時と同位相で出力する。そのため再生時の
ビデオとオーデイオ信号の時間差は発生せず自然
な再生状態を得ることができる。また変速再生時
には第９図の再生専用磁気ヘツド４Ａ，４Ｂを記
録トラツクに追従させる如くバイモルフ板５Ａ，
５Ｂでトラツク幅方向に変位、制御し完全なビデ
オ信号を再生する。 FIG. 9 shows a plan view of the rotating drum device of this conventional magnetic recording/reproducing device. Although the above-mentioned publication describes a structure in which the magnetic heads do not have an azimuth angle, a structure using magnetic heads having azimuth angles in opposite directions will be described here. In FIG. 9, the magnetic tape 1 is wound around a rotating drum 2 and runs at a constant speed in the direction of arrow a in the figure. The rotating drum 2 rotates at high speed in the direction of arrow b in the figure, and has a pair of recording/reproducing magnetic heads 3A, 3B having azimuth angles in opposite directions, and a pair of reproducing magnetic heads 4A, 4B, each with an interval of 180 degrees. It is located in In addition, the pair of reproduction-only heads 4A and 4B
are provided on bimorph plates 5A and 5B each composed of an electromechanical transducer, for example a piezoelectric element, in order to perform tracking control during variable speed reproduction, and are configured so that the rotational height position can be displaced and controlled. Furthermore, the read-only magnetic heads 4A, 4B are arranged to record signals at positions 2.5 fields ahead of the read/write magnetic heads 3A, 3B. With the above configuration, when recording, first, as shown in FIG.
A 1 , 6A 2 , ..., and 3B 6B 1 , 6B 2 ...
respectively, the video signal is recorded in real time with the input signal, and the audio signal is recorded in real time with the input signal.
As shown in the figure, one field period is compressed on the time axis,
The head that recorded the video signal records the video signal after the video signal. During playback, the video system plays back the video track TV using the recording/playback magnetic heads 3A and 3B, and the audio system plays back the audio track TA compressed in the time axis and recorded using the playback magnetic heads 4A and 4B shown in FIG. After the signal is reproduced at a phase 2.5 fields ahead of that at the time of recording, signal processing such as error correction is performed and the signal is output at the same phase as at the time of recording. Therefore, there is no time difference between the video and audio signals during playback, and a natural playback state can be obtained. In addition, during variable speed reproduction, the bimorph plates 5A, 4B shown in FIG.
5B to displace and control the track width direction to reproduce a complete video signal.
発明が解決しようとする問題点
しかしながら上記のような構成では回転ドラム
２に磁気ヘツドを２組設けなければならずドラム
ユニツトの構成が複雑となつてコストがアツプす
るとともに装置が大形化し重量も増加する。また
再生時ビデオ信号をバイモルフに設けた磁気ヘツ
ドで再生しないため記録と再生時にデツキが異な
る互換再生においてトラツク曲がりによる出力低
下が発生し画質が劣化するという問題点を有して
いた。Problems to be Solved by the Invention However, with the above configuration, two sets of magnetic heads must be provided on the rotating drum 2, which complicates the configuration of the drum unit, increases costs, and increases the size and weight of the device. To increase. Furthermore, since the video signal is not reproduced by the magnetic head provided in the bimorph during reproduction, there is a problem in that during compatible reproduction using different decks during recording and reproduction, output decreases due to track curvature, resulting in deterioration of image quality.
本発明はかかる点に鑑み、トラツク幅方向に変
位するバイモルフに設けた一対の回転磁気ヘツド
で、ビデオとオーデイオの再生時の時間差をなく
し自然な再生状態を得ることが可能な新規な磁気
記録再生装置を提供することを目的とする。 In view of this, the present invention provides a novel magnetic recording and reproducing system that eliminates the time difference between video and audio reproduction and provides a natural reproduction state using a pair of rotating magnetic heads provided on a bimorph that is displaced in the track width direction. The purpose is to provide equipment.
問題点を解決するための手段
本発明は、ビデオ信号と時間軸圧縮したオーデ
イオ信号を磁気テープの斜め方向に固定ヘツド記
録領域をはさんで両側に分割記録する回転磁気ヘ
ツドと、該磁気ヘツドをトラツク幅方向へ変位さ
せる変位手段と、前記固定ヘツド記録領域に信号
を記録再生する固定磁気ヘツドとを備え、前記回
転磁気ヘツドが前記固定ヘツド記録領域を走査す
る期間に前記回転磁気ヘツドをトラツク幅方向へ
変位させる様構成した磁気記録再生装置である。Means for Solving the Problems The present invention provides a rotating magnetic head for dividing and recording video signals and time-compressed audio signals diagonally on both sides of a magnetic tape with a fixed head recording area in between, and The device includes a displacement means for displacing in the track width direction, and a fixed magnetic head for recording and reproducing signals in the fixed head recording area, and the rotary magnetic head is moved in the track width direction during the period when the rotating magnetic head scans the fixed head recording area. This is a magnetic recording/reproducing device configured to cause displacement in the direction.
作 用
本発明はトラツク幅方向に変位可能に設けた一
対の回転磁気ヘツドを、ビデオとオーデイオトラ
ツクの間に設けた固定ヘツド記録領域でトラツク
幅方向に変化させ、時間軸圧縮して記録したオー
デイオ信号をビデオ信号より先行再生することに
より、一対の磁気ヘツドで再生時のビデオ信号と
オーデイオ信号のタイミング合わせを行うことが
できる。Function The present invention uses a pair of rotary magnetic heads that are displaceable in the track width direction in a fixed head recording area provided between the video and audio tracks to compress the time axis and record recorded audio. By reproducing the signal in advance of the video signal, the pair of magnetic heads can match the timing of the video signal and audio signal during reproduction.
実施例
第１図は本発明の実施例における磁気記録再生
装置の磁気ヘツド構成を示す平面図である。第１
図において７は磁気テープであり矢印ｃ方向へ高
速回転する回転ドラム８にヘリカルに巻付いて矢
印ｄ方向へ定速走行する。また回転ドラム８には
互いに逆方向のアジムス角を有する一対の磁気ヘ
ツド９Ａ，９Ｂが圧電素子で構成されたバイモル
フ板１０Ａ，１０Ｂで回転軸方向に変位可能な構
成で設けられている。そして前記バイモルフ板１
０Ａ，１０Ｂはそれぞれバイモルフ駆動回路１１
から印加される電圧に応じて変位する。また回転
ドラム８のテープ出口に固定の磁気ヘツド１２を
設けてありテープの長手方向にたとえばコントロ
ール信号、リニアオーデイオ信号、タイムコード
等のキユー信号を記録再生する。そして第２図に
上記装置で記録したテープパターンを示し磁気ヘ
ツド９ＡでTV1，TV3，TV5，TA1，TA3，
TA5を９ＢでTV2，TV4，TA2，TA4を記録す
る。ここで固定ヘツド記録領域をビデオトラツク
とオーデイオトラツクの間に設けてあるがその理
由は後述する。また第３図に実施例の記録時の回
路系を示し、第１図の入力端子１３にはビデオ信
号SVが供給されが２の入力端子１４にはオーデ
イオ信号SAが供給される。そして上記ビデオ信
号SVはビデオ変調回路１５に供給された後ヘツ
ド切換回路１６を介して回転磁気ヘツド９Ａ，９
Ｂに選択的に供給される。またオーデイオ信号
SAはアナログデジタル変換回路１７にてデジタ
ル化され時間軸圧縮回路１８に供給される。該圧
縮回路は１フイールド期間のオーデイオ信号を約
１／４フイールドに時間圧縮する様構成されている。
そして上記の如く圧縮されたオーデイオ信号
SACはオーデイオ変調回路１９に供給された後
信号選択回路２０を介して回転磁気ヘツド９Ａ，
９Ｂに選択的に供給される。Embodiment FIG. 1 is a plan view showing the configuration of a magnetic head of a magnetic recording/reproducing apparatus in an embodiment of the present invention. 1st
In the figure, a magnetic tape 7 is helically wound around a rotating drum 8 rotating at high speed in the direction of arrow c, and runs at a constant speed in the direction of arrow d. Further, the rotating drum 8 is provided with a pair of magnetic heads 9A and 9B having azimuth angles in opposite directions, which are displaceable in the direction of the rotating shaft by bimorph plates 10A and 10B made of piezoelectric elements. and the bimorph plate 1
0A and 10B are bimorph drive circuits 11, respectively.
Displaces according to the voltage applied from the A fixed magnetic head 12 is provided at the tape outlet of the rotating drum 8, and records and reproduces cue signals such as control signals, linear audio signals, and time codes in the longitudinal direction of the tape. FIG. 2 shows the tape pattern recorded by the above device, and the magnetic head 9A records TV 1 , TV 3 , TV 5 , TA 1 , TA 3 ,
Record TV 2 , TV 4 , TA 2 , and TA 4 on TA 5 with 9B. Here, a fixed head recording area is provided between the video track and the audio track, and the reason for this will be explained later. Further, FIG. 3 shows a circuit system during recording of the embodiment, in which the video signal SV is supplied to the input terminal 13 of FIG. 1, and the audio signal SA is supplied to the second input terminal 14. The video signal SV is supplied to the video modulation circuit 15 and then sent to the rotating magnetic heads 9A, 9 via the head switching circuit 16.
selectively supplied to B. Also audio signal
The SA is digitized by an analog-to-digital conversion circuit 17 and supplied to a time axis compression circuit 18. The compression circuit is configured to time-compress an audio signal of one field period to about 1/4 field.
And the audio signal compressed as above
After the SAC is supplied to the audio modulation circuit 19, it is passed through the signal selection circuit 20 to the rotating magnetic head 9A,
9B is selectively supplied.
また第４図に実施例の再生時の回路系を示し、
前記回転磁気ヘツド９Ａ，９Ｂで再生された信号
はそれぞれ専用のヘツドアンプ２１，２２で増幅
された後再生信号切換回路２３，２４を介してビ
デオ信号はビデオ復調回路２５へ供給される。そ
してオーデイオ信号はオーデイオ復調回路２６か
ら時間軸伸長回路２７へ供給されもとの１フイー
ルドに伸長された後デジタルアナログ変換回路２
８でアナログ化され出力端子２９から出力され
る、またビデオ信号は出力端子３０から出力され
る。 In addition, FIG. 4 shows the circuit system during playback of the embodiment,
The signals reproduced by the rotating magnetic heads 9A and 9B are amplified by dedicated head amplifiers 21 and 22, respectively, and then the video signals are supplied to a video demodulation circuit 25 via reproduction signal switching circuits 23 and 24. The audio signal is then supplied from the audio demodulation circuit 26 to the time axis expansion circuit 27, where it is expanded to the original one field, and then the digital-to-analog conversion circuit 2
The video signal is converted into an analog signal at 8 and output from an output terminal 29, and the video signal is output from an output terminal 30.
また第１図のバイモルフ板１０Ａ，１０Ｂには
記録時磁気ヘツドを所定の高さ位置に保持するた
めの制御が行なわれておりその構成を次に説明す
る。まず記録指令で両方のバイモルフ板１０Ａ，
１０Ｂに時間とともにレベルの減少する交流電圧
を印加してヒステリシスによる変位部分を除去し
ヘツドの高さを基準値に復帰させた後に記録を開
始するがこの時第５図に示す如く、ビデオトラツ
クTV1の前オーバーラツプ領域の前に低周波の
パイロツト信号P1を第１図のヘツド９Ａで記録
しておき以降も同様に記録する、そしてヘツド９
ＢがトラツクTV2を走査する時再生期間におい
てパイロツトP1の漏れ磁束を再生し第１の検出
信号を得、次にヘツド９ＡがトラツクTV3を走
査する時、同様にパイロツトP2の漏れ磁束を再
生し第２の検出信号を得るそして上記２つの検出
信号のレベルを比較し、もし異なつている場合は
両ヘツドに高さ差があることになりたとえばヘツ
ド９Ｂを高さ差をなくす方向へバイモルフで変位
させて補正し以降においても同様の検出、比較、
補正をくり返して常に両ヘツドを基準高さに保持
しビデオ及びオーデイオ信号を記録する。 The bimorph plates 10A and 10B shown in FIG. 1 are controlled to hold the magnetic heads at a predetermined height during recording, and the structure thereof will be described below. First, with the recording command, both bimorph plates 10A,
After applying an alternating current voltage whose level decreases over time to 10B to remove the displacement due to hysteresis and return the head height to the reference value, recording is started. At this time, as shown in FIG. A low frequency pilot signal P1 is recorded in front of the pre-overlap area of 1 by head 9A in FIG.
When head B scans track TV 2 , the leakage flux of pilot P 1 is reproduced during the regeneration period to obtain the first detection signal, and when head 9A scans track TV 3 , the leakage flux of pilot P 2 is similarly obtained. is reproduced to obtain a second detection signal, and the levels of the above two detection signals are compared. If they are different, it means that there is a height difference between the two heads, and for example, move head 9B in a direction that eliminates the height difference. The same detection, comparison,
The correction is repeated to keep both heads at the reference height and record the video and audio signals.
そして再生時には第６図に示す如くバイモルフ
を制御する。まずビデオ信号TV1，TV2……を
再生する期間においては磁気ヘツドを記録時の高
さにし、オーデイオ信号TA1，TA2……を再生
する時は２フイールド先行したオーデイオ信号を
再生する如くバイモルフにイ，ロに示す電圧Ｘを
印加する、実際のヘツド変位はハ，ニの如くなだ
らかに追従するが、オーデイオ信号TA1，TA2
……の領域は２フイールドの変位量Ｙで安定する
様構成してある。この様にヘツドの応答性の面か
らビデオとオーデイオトラツクとの間には応答性
をカバーするだけの間隔が必要であり本発明はこ
の領域に固定ヘツド信号を記録する様構成してあ
る。 During playback, the bimorph is controlled as shown in FIG. First, during the period of reproducing the video signals TV 1 , TV 2 . . . , the magnetic head is set at the recording height, and when the audio signals TA 1 , TA 2 . When the voltages X shown in A and B are applied to the bimorph, the actual head displacement follows smoothly as shown in C and D, but the audio signals TA 1 and TA 2
The area of . . . is configured to be stable at a displacement Y of two fields. In this manner, from the viewpoint of the responsiveness of the head, a gap sufficient to cover the responsiveness is required between the video and audio tracks, and the present invention is configured to record a fixed head signal in this area.
また再生時にはビデオ・オーデイオトラツクと
もトラツクの曲がりに磁気ヘツドを追従させてト
ラツキング制御する、その構成は第７図に示す如
くビデオトラツク、オーデイオトラツクとも再生
時にバイモルフに交流電圧を印加し磁気ヘツドを
トラツク幅方向に振らせ再生出力のレベルとヘツ
ド変位量から曲がり方向と量を自動的に判断し追
従する様構成してある。 Also, during playback, tracking is controlled by making the magnetic head follow the curve of the track for both video and audio tracks.As shown in Figure 7, both the video track and audio track control tracking by applying an alternating current voltage to the bimorph during playback. It is configured to automatically determine and follow the direction and amount of bending from the level of the playback output and the amount of head displacement in the width direction.
以上の様に構成された本実施定の磁気記録再生
装置について以下その動作を説明する。 The operation of the magnetic recording/reproducing apparatus of this embodiment configured as described above will be described below.
入力端子１３に入力されたビデオ信号SVは磁
気ヘツド９Ａ及び９Ｂで第２図の如くビデオ信号
記録域にトラツクを形成する。一方時間軸圧縮さ
れたオーデイオ信号SACはオーデイオ信号記録
域にオーデイオトラツクを形成する。この状態を
第８図のタイミングチヤートで説明すると、１フ
イールド期間のビデオ信号SV1は実時間でトラツ
クTV1を形成するがオーデイオ信号SA1は1/3フ
イールド期間内で1/4フイールドの信号SACに圧
縮され、TA1を形成する。また再生時にはビデ
オトラツクTV1を、記録したヘツドで再生する
とともに第２図に示す固定ヘツド記録領域で第６
図に示す如く磁気ヘツドを変位させ２フイールド
前のオーデイオ信号を再生する、これは第８図で
TA1、REC位置の信号をTA1，Ｐ・Ｂ位置で再
生することになり、エラー訂正などの処理を行つ
た後再生ビデオ信号Ｐ・BSV1と同時間で出力す
ればビデオとオーデイオ信号の時間ずれを防止で
きる。 The video signal SV input to the input terminal 13 forms a track in the video signal recording area by the magnetic heads 9A and 9B as shown in FIG. On the other hand, the time-base compressed audio signal SAC forms an audio track in the audio signal recording area. To explain this state using the timing chart in Fig. 8, the video signal SV 1 of one field period forms a track TV 1 in real time, but the audio signal SA 1 forms a signal of 1/4 field within a 1/3 field period. Compressed into SAC to form TA 1 . Also, during playback, video track TV 1 is played back in the head where it was recorded, and the 6th track is played back in the fixed head recording area shown in Figure 2.
As shown in the figure, the magnetic head is displaced to reproduce the audio signal two fields earlier. This is shown in Figure 8.
The signal at the TA 1 , REC position will be played back at the TA 1 , P/B position, and if it is output at the same time as the playback video signal P/BSV 1 after processing such as error correction, the video and audio signals will be Time lag can be prevented.
また上記再生時に第７図に示す如く磁気ヘツド
をトラツク幅方向へ振らせ互換再生時のトラツク
曲がりにヘツドを追従させて良好な出力を得るこ
とができる。また変速再生時には記録されたビデ
オトラツクを正確にトレースする様一対の磁気ヘ
ツドを変位させれば良い。 Further, during the above-mentioned reproduction, the magnetic head is swung in the track width direction as shown in FIG. 7, and the head is made to follow the curve of the track during interchangeable reproduction, so that a good output can be obtained. Also, during variable speed playback, the pair of magnetic heads may be displaced so as to accurately trace the recorded video track.
また本実施例では再生時に磁気ヘツドを変位さ
せたが逆に記録時に２フイールド前に記録し、再
生時に連続的に再生しても良い。 Further, in this embodiment, the magnetic head is displaced during reproduction, but conversely, it may be possible to record two fields before during recording, and to reproduce continuously during reproduction.
また記録時のヘツド高さ検出制御にパイロツト
信号による方式を記載したが磁気ヘツドあるいは
バイモルフの高さ位置をフオトトランジスターホ
ール素子等の非接触手段で直接検出し制御しても
良い。 Although a method using a pilot signal is described for head height detection control during recording, the height position of the magnetic head or bimorph may be directly detected and controlled by non-contact means such as a phototransistor Hall element.
発明の効果
以上説明したように、本発明によればトラツク
幅方向に変位可能に設けた一対の回転磁気ヘツド
を、ビデオとオーデイオトラツクの間に設けた固
定ヘツド記録領域でトラツク幅方向に変位させ、
時間軸圧縮して記録したオーデイオ信号をビデオ
信号より先行再生する様構成したことにより簡単
な構成で画と音の時間差をなくし自然な再生状態
を実現できる。Effects of the Invention As explained above, according to the present invention, a pair of rotating magnetic heads displaceable in the track width direction are displaceable in the track width direction in a fixed head recording area provided between the video and audio tracks. ,
By configuring the system to play back the audio signal recorded with time axis compression before the video signal, it is possible to eliminate the time difference between image and sound with a simple configuration and realize a natural playback state.
また構成の簡略化がはかれたことにより装置の
小形化、軽量化、コストダウンに効果がある。 Furthermore, the simplified configuration has the effect of reducing the size, weight, and cost of the device.
また互換再生時のトラツク曲がりに対してビデ
オトラツク、オーデイオトラツクとも再生する磁
気ヘツドを追従させる様構成したことにより、ト
ラツク全長に渡り良好な再生出力が得られ、画
質、音質が向上しその実用的効果は大きい。 In addition, by configuring the magnetic head that plays back both video and audio tracks to follow the bending of the track during compatible playback, good playback output is obtained over the entire length of the track, improving image and sound quality, and making it more practical. The effect is great.
第１図は本発明における一実施例の磁気記録再
生装置の回転ドラム平面図、第２図は同実施例装
置で記録したテープパターン図、第３図は同実施
例の記録時の回路系を示すブロツク図、第４図は
同実施例の再生時の回路系を示すブロツク図、第
５図は同実施例の記録時のヘツド高さ位置制御方
法の説明図、第６図は同実施例のバイモルフ駆動
電圧波形図、第７図は同実施例のトラツク曲がり
検出時のバイモルフ印加電圧波形図、第８図は同
実施例のビデオ及びオーデイオ信号の記録再生及
び信号処理時間等の時間関係を示すタイミングチ
ヤート、第９図は従来の磁気記録再生装置の回転
ドラム平面図、第１０図は従来の装置で記録した
テープパターン図、第１１図は従来のビデオ及び
オーデイオ信号の時間関係を示すタイミングチヤ
ートである。
９Ａ，９Ｂ……回路磁気ヘツド、１０Ａ，１０
Ｂ……バイモルフ、１１……バイモルフ駆動回
路。
Fig. 1 is a plan view of a rotating drum of a magnetic recording/reproducing device according to an embodiment of the present invention, Fig. 2 is a diagram of a tape pattern recorded by the same embodiment, and Fig. 3 is a circuit system during recording of the same embodiment. 4 is a block diagram showing the circuit system during reproduction in the same embodiment, FIG. 5 is an explanatory diagram of the head height position control method during recording in the same embodiment, and FIG. 6 is a diagram showing the same embodiment. 7 is a diagram of the bimorph applied voltage waveform when detecting a track bend in the same embodiment. FIG. 8 is a diagram of the time relationship between recording and reproduction of video and audio signals, signal processing time, etc. in the same embodiment. 9 is a plan view of a rotating drum of a conventional magnetic recording/reproducing device, FIG. 10 is a tape pattern diagram recorded by the conventional device, and FIG. 11 is a timing diagram showing the time relationship between conventional video and audio signals. It's a chat. 9A, 9B...Circuit magnetic head, 10A, 10
B...Bimorph, 11...Bimorph drive circuit.
Claims (1)
を、磁気テープの斜め方向に固定ヘツド記録領域
をはさんで両側に分割記録あるいは再生する回転
磁気ヘツドと、この回転磁気ヘツドをトラツク幅
方向に変位させる手段と、前記固定ヘツド記録領
域に信号を記録再生する固定磁気ヘツドとを備
え、前記回転磁気ヘツドが固定磁気ヘツド記録領
域を走査する期間に、ビデオ信号よりオーデイオ
信号を相対的に先行再生する方向に前記回転磁気
ヘツドを変位させる様構成したことを特徴とする
磁気記録再生装置。1. A rotating magnetic head for recording or reproducing time-axis compressed audio and video signals diagonally across a fixed head recording area on both sides of the magnetic tape, and a means for displacing this rotating magnetic head in the track width direction. and a fixed magnetic head for recording and reproducing signals in the fixed head recording area, and the apparatus is configured to reproduce an audio signal relatively earlier than a video signal during a period in which the rotating magnetic head scans the fixed magnetic head recording area. A magnetic recording/reproducing apparatus characterized in that the rotating magnetic head is configured to be displaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP520685A JPS61165805A (en) | 1985-01-16 | 1985-01-16 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP520685A JPS61165805A (en) | 1985-01-16 | 1985-01-16 | Magnetic recording and reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61165805A JPS61165805A (en) | 1986-07-26 |
| JPH0576084B2 true JPH0576084B2 (en) | 1993-10-21 |
Family
ID=11604717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP520685A Granted JPS61165805A (en) | 1985-01-16 | 1985-01-16 | Magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61165805A (en) |
-
1985
- 1985-01-16 JP JP520685A patent/JPS61165805A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61165805A (en) | 1986-07-26 |
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