JPH0636259B2 - Magnetic recording / reproducing device - Google Patents
Magnetic recording / reproducing deviceInfo
- Publication number
- JPH0636259B2 JPH0636259B2 JP58128621A JP12862183A JPH0636259B2 JP H0636259 B2 JPH0636259 B2 JP H0636259B2 JP 58128621 A JP58128621 A JP 58128621A JP 12862183 A JP12862183 A JP 12862183A JP H0636259 B2 JPH0636259 B2 JP H0636259B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- recording
- video signal
- reproducing
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/467—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven
- G11B15/473—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads
- G11B15/4731—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads control of headwheel rotation
- G11B15/4733—Controlling, regulating, or indicating speed in arrangements for recording or reproducing wherein both record carriers and heads are driven by controlling the speed of the heads control of headwheel rotation with provision for information tracking, e.g. for time base correction
Landscapes
- Management Or Editing Of Information On Record Carriers (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は編集等に有用な磁気記録再生装置に関するもの
である。Description: TECHNICAL FIELD The present invention relates to a magnetic recording / reproducing apparatus useful for editing and the like.
従来例の構成とその問題点 磁気記録再生装置（以下ＶＴＲと記す）において、磁気
テープに記録された第２の映像信号に新たに第１の映像
信号を挿入記録する編集操作を行なう場合に、第１の映
像信号と第２の映像信号の垂直同期信号の位相が一致し
ていないと、挿入記録の接続点で第１の映像信号と第２
の映像信号との時間軸誤差が発生し、再生画像の乱れの
原因になる。この乱れを低減するには、第１の映像信号
と第２の映像信号の垂直同期信号の位相差を検出し、こ
の位相差が零になるように、磁気ヘッドを有する回転体
の位相制御を行なう方法が既に提案されている。Configuration of Conventional Example and Problems Thereof When a magnetic recording / reproducing apparatus (hereinafter referred to as VTR) performs an editing operation of newly inserting and recording a first video signal into a second video signal recorded on a magnetic tape, If the phases of the vertical synchronizing signals of the first video signal and the second video signal do not match, the first video signal and the second video signal are
A time-axis error with the video signal of 1 occurs, which causes disturbance of the reproduced image. In order to reduce this disturbance, the phase difference between the vertical synchronizing signals of the first video signal and the second video signal is detected, and the phase control of the rotating body having the magnetic head is performed so that this phase difference becomes zero. Methods to do this have already been proposed.
以下図面を参照しながら上述の従来例についてさらに詳
しく説明する。The above-mentioned conventional example will be described in more detail below with reference to the drawings.
第１図は第１の従来例であるＶＴＲの要部概略構成図で
ある。第１図において、１は磁気テープ上の信号を再生
する再生ヘッドで、再生ヘッド１は再生ヘッド１ａと再
生ヘッド１ｂから構成される。２は磁気テープ上の信号
を消去する消去ヘッドで、消去ヘッド２は消去ヘッド２
ａと消去ヘッド２ｂから構成される。３は磁気テープ上
に信号を記録する記録ヘッドで、記録ヘッド３は記録ヘ
ッド３ａと記録ヘッド３ｂから構成される。６は磁気ヘ
ッドを回転させる回転体である。７は信号を記録する磁
気テープである。FIG. 1 is a schematic configuration diagram of a main part of a VTR which is a first conventional example. In FIG. 1, 1 is a reproducing head for reproducing a signal on a magnetic tape, and the reproducing head 1 is composed of a reproducing head 1a and a reproducing head 1b. 2 is an erasing head for erasing signals on the magnetic tape, and erasing head 2 is erasing head 2
a and an erasing head 2b. A recording head 3 records a signal on a magnetic tape, and the recording head 3 is composed of a recording head 3a and a recording head 3b. Reference numeral 6 is a rotating body for rotating the magnetic head. Reference numeral 7 is a magnetic tape for recording signals.
まず、消去ヘッド２に先行する再生ヘッド１により第２
の映像信号を再生しながら消去ヘッド２により第２の映
像信号を消去する。次に消去ヘッド２で第２の映像信号
を消去しながら記録ヘッド３により第１の映像信号を記
録する。この場合に、第１の映像信号と第２の映像信号
の垂直同期信号の位相差が零になるように、磁気ヘッド
を有する回転体６の位相制御を行なう。First, the reproducing head 1 preceding the erasing head 2
The second video signal is erased by the erasing head 2 while reproducing the second video signal. Next, the erasing head 2 erases the second video signal, and the recording head 3 records the first video signal. In this case, the phase of the rotating body 6 having the magnetic head is controlled so that the phase difference between the vertical synchronizing signals of the first video signal and the second video signal becomes zero.
しかしながら、前記のような構成においては、挿入記録
用の再生ヘッド１が必要であり、かつ第１の映像信号を
記録しながら、その記録された第１の映像信号を再生す
る所謂同時再生を行なうには記録ヘッド３の後方に、さ
らに再生ヘッド１が必要で、磁気ヘッドが４対必要であ
るという欠点を有している。However, in the above-mentioned configuration, the reproducing head 1 for insertion recording is required, and so-called simultaneous reproduction for reproducing the recorded first video signal while recording the first video signal is performed. Has a drawback in that it further requires the reproducing head 1 behind the recording head 3 and requires four pairs of magnetic heads.
次に、第２図は第２の従来例であるＶＴＲの要部概略構
成図である。第２図において、２は消去ヘッド、６は回
転体、７は磁気テープで、以上は第１図の構成と同じも
のである。４はタイミングにより、磁気テープ上に信号
を記録あるいは磁気テープ上の信号を再生する記録再生
ヘッドで、記録再生ヘッド４は記録再生ヘッド４ａと記
録再生ヘッド４ｂから構成される。Next, FIG. 2 is a schematic configuration diagram of a main part of a second conventional VTR. In FIG. 2, reference numeral 2 is an erasing head, 6 is a rotating body, and 7 is a magnetic tape. The above is the same as the configuration of FIG. Reference numeral 4 is a recording / reproducing head for recording a signal on the magnetic tape or reproducing a signal on the magnetic tape according to the timing. The recording / reproducing head 4 comprises a recording / reproducing head 4a and a recording / reproducing head 4b.
まず、消去ヘッド２を第２の映像信号の垂直同期信号部
分のみ働らかせず垂直同期信号を消し残す。そして記録
再生ヘッド４が消し残した垂直同期信号部分を走査する
時、記録再生ヘッド４を再生状態と成し、垂直同期信号
を再生する。垂直同期信号の再生を行なった後、記録再
生ヘッド４を記録状態となし、第１の映像信号を記録す
る。この場合に、第１の映像信号と第２の映像信号の垂
直同期信号の位相差が零になるように、磁気ヘッドを有
する回転体６の位相制御を行なう。First, the erasing head 2 does not work only the vertical synchronizing signal portion of the second video signal, and the vertical synchronizing signal is erased and left. When the recording / reproducing head 4 scans the part of the vertical synchronization signal which has been erased and left, the recording / reproducing head 4 is brought into a reproduction state and the vertical synchronization signal is reproduced. After the vertical synchronizing signal is reproduced, the recording / reproducing head 4 is brought into the recording state and the first video signal is recorded. In this case, the phase of the rotating body 6 having the magnetic head is controlled so that the phase difference between the vertical synchronizing signals of the first video signal and the second video signal becomes zero.
しかしながら、前記のような構成においては、第２の映
像信号の垂直同期信号部分での消去ヘッドのＯＮとＯＦ
Ｆ及び記録再生ヘッドの再生と記録の切り換えが必要で
あり、構成が複雑であるという欠点を有していた。However, in the above-mentioned configuration, the erase head is turned ON and OF in the vertical synchronizing signal portion of the second video signal.
F and the recording / reproducing head have to be switched between reproduction and recording, which has a drawback that the configuration is complicated.
発明の目的 本発明は上記のような欠点を除去するものであり、簡単
な構成で挿入記録部の再生画像の乱れをなくすものであ
り、かつ同時再生を容易に実現することを目的とする。It is an object of the present invention to eliminate the above-mentioned drawbacks, to eliminate the disturbance of the reproduced image of the insertion recording section with a simple structure, and to easily realize the simultaneous reproduction.
発明の構成 この目的を達成するために本発明は、回転体に取り付け
られた再生ヘッドが記録ヘッドの未走査のトラックを走
査するように構成したものである。これにより挿入記録
時の第１の映像信号と第２の映像信号の位相を合わすこ
とができると共に、再生ヘッドの機械的位置を変化させ
ることにより同時再生が可能となるものである。Configuration of the Invention To achieve this object, the present invention is configured so that a reproducing head attached to a rotating body scans an unscanned track of the recording head. This makes it possible to match the phases of the first video signal and the second video signal at the time of insertion recording, and at the same time, by changing the mechanical position of the reproducing head, simultaneous reproduction is possible.
実施例の説明 以下本発明の一実施例について、図面を参照しながら説
明する。Description of Embodiments An embodiment of the present invention will be described below with reference to the drawings.
第３図は本発明の一実施例における要部模式図であり、
第４図は本実施例のブロック図を示すものである。FIG. 3 is a schematic view of an essential part in one embodiment of the present invention,
FIG. 4 shows a block diagram of this embodiment.
図中２は消去ヘッド、３は記録ヘッド、６は回転体、７
は磁気テープで、以上は第１図に示す従来例の構成と同
じものである。５は圧電素子により機械的位置を変化さ
せることを可能にした可動ヘッドで、可動ヘッド５は可
動ヘッド５ａと可動ヘッド５ｂから構成される。In the figure, 2 is an erasing head, 3 is a recording head, 6 is a rotating body, 7
Is a magnetic tape, and the above is the same as the structure of the conventional example shown in FIG. Reference numeral 5 denotes a movable head whose mechanical position can be changed by a piezoelectric element. The movable head 5 is composed of a movable head 5a and a movable head 5b.
また、図中８は、映像信号をＦＭ変調するＦＭ変調器で
ある。９は磁気テープ７からの再生信号をＦＭ復調する
ＦＭ復調器である。１０と１１は映像信号から垂直同期
信号を分離する垂直同期分離回路である。１２はパルス
発生器１７からの信号を整形する波形整形回路である。
１３と１４は２つの入力信号の位相差に応じた信号を出
力する位相差検出回路である。１５は回転体６の回転位
相を制御する制御回路である。１６は制御回路１５の信
号により回転体６を回転させるモータである。１７は回
転体６の回転位相に応じた信号を発生するパルス発生器
である。１８は消去ヘッド２に送られる消去電流を発生
する発振器である。In addition, reference numeral 8 in the drawing denotes an FM modulator that FM-modulates a video signal. An FM demodulator 9 FM demodulates the reproduction signal from the magnetic tape 7. Reference numerals 10 and 11 are vertical sync separation circuits for separating the vertical sync signal from the video signal. Reference numeral 12 is a waveform shaping circuit that shapes the signal from the pulse generator 17.
Reference numerals 13 and 14 are phase difference detection circuits that output signals corresponding to the phase difference between the two input signals. Reference numeral 15 is a control circuit for controlling the rotation phase of the rotating body 6. Reference numeral 16 is a motor that rotates the rotating body 6 in response to a signal from the control circuit 15. Reference numeral 17 denotes a pulse generator that generates a signal according to the rotation phase of the rotating body 6. Reference numeral 18 is an oscillator that generates an erase current sent to the erase head 2.
以上のように構成されたＶＴＲについて、以下その動作
を説明する。The operation of the VTR configured as above will be described below.
まず、記録ヘッド３に先行する消去ヘッド２は発振器１
８からの消去電流によりトラックＡの映像信号を消去す
る。新たに記録されるべき第１の映像信号イはＦＭ変調
器８によりＦＭ変調され、記録ヘッド３により磁気テー
プのトラックＡに記録される。また、第１の映像信号
(イ)は垂直同期分離回路１０に送られ垂直同期信号(ハ)が
得られる。そして回転体６の回転位相に応じたパルスを
発生するパルス発生器１７の出力を波形整形回路１２に
より波形整形されたＰＧパルス(ホ)と垂直同期信号(ハ)は
位相差検出回路１３に送られ、位相差に応じた信号が制
御回路１５に送られる。First, the erasing head 2 preceding the recording head 3 has the oscillator 1
The erasing current from 8 erases the video signal of track A. The first video signal a to be newly recorded is FM-modulated by the FM modulator 8 and recorded on the track A of the magnetic tape by the recording head 3. Also, the first video signal
(A) is sent to the vertical sync separation circuit 10 to obtain a vertical sync signal (c). Then, the output of the pulse generator 17 for generating a pulse corresponding to the rotation phase of the rotating body 6 is sent to the phase difference detection circuit 13 with the PG pulse (e) and the vertical synchronization signal (c) which are waveform-shaped by the waveform shaping circuit 12. Then, a signal corresponding to the phase difference is sent to the control circuit 15.
次に可動ヘッド５はトラックＢの映像信号の垂直同期部
分を再生するために可動ヘッド制御信号(ヘ)により、第
３図(b)に示すようにトラックＢに移される。この時、
記録ヘッドおよび可動ヘッドにより、磁気テープに描か
れる軌跡は異なる。可動ヘッド５によりトラックＢの垂
直同期信号部分のみ走査した後、可動ヘッド制御信号
(ヘ)により、第３図(c)に示すようにトラックＡに戻す。
この時、記録ヘッドおよび可動ヘッドにより、磁気テー
プに描かれる軌跡は同一となる。可動ヘッド５により再
生されたトラックＢの信号はＦＭ復調器９により復調さ
れ、垂直同期分離回路１１により垂直同期信号(ニ)が得
られる。この垂直同期信号(ニ)と前記垂直同期信号(ハ)は
位相差検出回路１４に送られ位相差に応じた信号が制御
回路１５に送られる。制御回路１５では位相差検出回路
１３と位相差検出回路１４からの信号によってモータ１
８の回転位相を制御する。Next, the movable head 5 is moved to the track B as shown in FIG. 3 (b) by the movable head control signal (f) in order to reproduce the vertical synchronizing portion of the video signal of the track B. At this time,
The locus drawn on the magnetic tape differs depending on the recording head and the movable head. After the movable head 5 scans only the vertical synchronizing signal portion of the track B, the movable head control signal
(F) Return to track A as shown in FIG. 3 (c).
At this time, the locus drawn on the magnetic tape becomes the same by the recording head and the movable head. The signal of the track B reproduced by the movable head 5 is demodulated by the FM demodulator 9, and the vertical sync separation circuit 11 obtains the vertical sync signal (d). The vertical synchronizing signal (d) and the vertical synchronizing signal (c) are sent to the phase difference detecting circuit 14 and a signal corresponding to the phase difference is sent to the control circuit 15. The control circuit 15 uses the signals from the phase difference detection circuit 13 and the phase difference detection circuit 14 to output the motor 1
The rotation phase of 8 is controlled.
また、可動ヘッド５により再生された信号はＦＭ復調器
９により復調され、第２の映像信号(ロ)として出力さ
れ、同時再生が行なえる。In addition, the signal reproduced by the movable head 5 is demodulated by the FM demodulator 9 and output as the second video signal (b) for simultaneous reproduction.
以上のように本実施例によれば、可動ヘッド５を用いる
ことにより、挿入記録時での同時再生を実現している。
なお、上の実施例では可動ヘッド５により垂直同期信号
(ニ)をトラックＢから取り出したが、トラックＣあるい
はそれ以降のトラックから再生したものでも良い。ま
た、可動ヘッド５を垂直同期信号(ニ)の期間のみトラッ
クＢを再生した後トラックＡに移したが、トラックＡに
移さないで、そのままトラックＢを再生しても良いこと
は言うまでもない。As described above, according to the present embodiment, by using the movable head 5, simultaneous reproduction at the time of insertion recording is realized.
It should be noted that in the above embodiment, the vertical sync signal is generated by the movable head 5.
Although (d) is taken out from the track B, it may be reproduced from the track C or the subsequent tracks. Further, although the movable head 5 is moved to the track A after reproducing the track B only during the period of the vertical synchronizing signal (d), it goes without saying that the track B may be reproduced as it is without moving to the track A.
発明の効果 以上のように本発明は、可動再生ヘッドを記録ヘッドの
後方で、しかも記録ヘッドが未走査のトラックを走査す
るように配置し、可動ヘッドにより第２の映像信号の垂
直同期信号と、新たに記録すべき第１の映像信号の垂直
同期信号との位相を合わせているので、挿入記録の接続
点における画像の乱れを低減することができる。さら
に、本発明によれば可動再生ヘッドの高さを変えること
により挿入記録しながら第１の映像信号あるいは第２の
映像信号を任意に選択して再生することができる。As described above, according to the present invention, the movable reproducing head is arranged behind the recording head so that the recording head scans an unscanned track, and the movable head generates a vertical synchronizing signal of the second video signal. Since the phase of the first video signal to be newly recorded is matched with that of the vertical synchronizing signal, it is possible to reduce the disturbance of the image at the connection point of the insertion recording. Further, according to the present invention, by changing the height of the movable reproducing head, it is possible to arbitrarily select and reproduce the first video signal or the second video signal while inserting and recording.
第１図(a)は第１の従来例であるＶＴＲの回転体上にお
ける磁気ヘッドの取り付け位置を示す平面図、(b)は同
ＶＴＲの磁気テープ上での磁気ヘッドの位置関係を示す
平面図、第２図(a)は第２の従来例であるＶＴＲの回転
体上における磁気ヘッドの取り付け位置を示す平面図、
(b)は同ＶＴＲの磁気テープ上での磁気ヘッドの位置を
示す平面図、(c)は同ＶＴＲの磁気ヘッドの動作のタイ
ミングを示す動作説明図、第３図(a)は本発明の一実施
例であるＶＴＲの回転体上における磁気ヘッドの取り付
け位置を示す平面図、(b)は同ＶＴＲの可動ヘッドが記
録ヘッドの未走査のトラックを再生する状態を示す平面
図、(c)は同ＶＴＲの記録ヘッドが走査するトラックを
可動ヘッドが再生する場合を示す平面図、第４図は同Ｖ
ＴＲのブロック図である。 １，１ａ，１ｂ……再生ヘッド、２，２ａ，２ｂ……消
去ヘッド、３，３ａ，３ｂ……記録ヘッド、４，４ａ，
４ｂ……記録再生ヘッド、５，５ａ，５ｂ……可動ヘッ
ド、６……回転体、７……磁気テープ、８……ＦＭ変調
器、９……ＦＭ復調器、１０……垂直同期分離回路、１
１……垂直同期分離回路、１２……波形整形回路、１３
……位相差検出回路、１４……位相差検出回路、１５…
…制御回路、１６……モータ、１７……パルス発生器、
１８……発振器、(イ)……第１の映像信号、(ロ)……第２
の映像信号、(ハ)……垂直同期信号、(ニ)……垂直同期信
号、(ホ)……ＰＧパルス、(ヘ)……可動ヘッド制御信号。FIG. 1 (a) is a plan view showing a mounting position of a magnetic head on a rotating body of a first conventional VTR, and FIG. 1 (b) is a plan view showing a positional relationship of magnetic heads on a magnetic tape of the same VTR. FIG. 2 (a) is a plan view showing a mounting position of a magnetic head on a rotating body of a second conventional VTR,
FIG. 3B is a plan view showing the position of the magnetic head on the magnetic tape of the same VTR, FIG. 3C is an operation explanatory view showing the timing of the operation of the magnetic head of the same VTR, and FIG. A plan view showing a mounting position of a magnetic head on a rotating body of a VTR which is an embodiment, (b) a plan view showing a state in which a movable head of the VTR reproduces an unscanned track of a recording head, (c) Is a plan view showing a case where the movable head reproduces a track scanned by the recording head of the VTR, and FIG.
It is a block diagram of TR. 1, 1a, 1b ... reproducing head, 2, 2a, 2b ... erasing head, 3, 3a, 3b ... recording head, 4, 4a,
4b ... Recording / reproducing head, 5, 5a, 5b ... Movable head, 6 ... Rotating body, 7 ... Magnetic tape, 8 ... FM modulator, 9 ... FM demodulator, 10 ... Vertical sync separation circuit 1
1 ... Vertical sync separation circuit, 12 ... Waveform shaping circuit, 13
...... Phase difference detection circuit, 14 …… Phase difference detection circuit, 15 ・ ・ ・
… Control circuit, 16 …… Motor, 17 …… Pulse generator,
18 ... Oscillator, (a) ... 1st video signal, (b) ... 2nd
Video signal, (c) ... vertical sync signal, (d) ... vertical sync signal, (e) ... PG pulse, (f) ... movable head control signal.
Claims (1)
体へ記録する記録ヘッドと、記録媒体に既に記録された
第２の映像信号を再生する再生ヘッドと、前記第２の映
像信号を消去する消去ヘッドと、前記消去ヘッドと前記
記録ヘッドと前記再生ヘッドをそれぞれ複数固有し、か
つ記録媒体に対し前記記録ヘッドが前記再生ヘッドに先
行するように前記記録ヘッドおよび前記再生ヘッドを配
設した回転体と、前記回転体に対する前記再生ヘッドの
高さを選択的に変えるための高さ調整手段と、前記回転
体の回転位相に応じたパルス信号を出力するパルス発生
器と、前記第１の映像信号から垂直同期信号を分離する
第１の垂直同期分離回路と、前記再生ヘッドにより再生
された第２の映像信号から垂直同期信号を分離する第２
の垂直同期分離回路と、前記第１の垂直同期分離回路の
出力と前記パルス発生器の出力との位相差に応じた信号
を出力する第１の位相差検出回路と、前記第１の垂直同
期分離回路の出力と前記第２の垂直同期分離回路の出力
との位相差に応じた信号を出力する第２の位相差検出回
路と、前記第１の位相差検出回路の出力と前記第２の位
相差検出回路の出力により前記回転体の回転位相を制御
する制御回路とを具備し、前記記録ヘッドおよび前記再
生ヘッドにより、前記記録媒体に描かれる走査軌跡を同
一もしくは異なるように選択し、前記第２の映像信号お
よび前記記録ヘッドにより新たに記録された前記第１の
映像信号を選択して再生することができるように構成し
たことを特徴とする磁気記録再生装置。1. A recording head for recording a first video signal to be newly recorded on a recording medium, a reproducing head for reproducing a second video signal already recorded on the recording medium, and the second video signal. A plurality of erasing heads for erasing data, erasing heads, recording heads, and reproducing heads, and arranging the recording heads and the reproducing heads on the recording medium so that the recording heads precede the reproducing heads. A rotating body provided, height adjusting means for selectively changing the height of the reproducing head with respect to the rotating body, a pulse generator for outputting a pulse signal according to a rotation phase of the rotating body, A first vertical sync separation circuit for separating the vertical sync signal from the first video signal; and a second vertical sync signal for separating the vertical sync signal from the second video signal reproduced by the reproducing head.
Vertical synchronization separation circuit, a first phase difference detection circuit that outputs a signal according to the phase difference between the output of the first vertical synchronization separation circuit and the output of the pulse generator, and the first vertical synchronization A second phase difference detection circuit that outputs a signal corresponding to the phase difference between the output of the separation circuit and the output of the second vertical synchronization separation circuit, the output of the first phase difference detection circuit, and the second phase difference detection circuit. A control circuit for controlling the rotational phase of the rotating body according to the output of the phase difference detection circuit, wherein the recording head and the reproducing head select scanning loci drawn on the recording medium to be the same or different, A magnetic recording / reproducing apparatus characterized in that a second video signal and the first video signal newly recorded by the recording head can be selected and reproduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58128621A JPH0636259B2 (en) | 1983-07-14 | 1983-07-14 | Magnetic recording / reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58128621A JPH0636259B2 (en) | 1983-07-14 | 1983-07-14 | Magnetic recording / reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6020348A JPS6020348A (en) | 1985-02-01 |
| JPH0636259B2 true JPH0636259B2 (en) | 1994-05-11 |
Family
ID=14989316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58128621A Expired - Lifetime JPH0636259B2 (en) | 1983-07-14 | 1983-07-14 | Magnetic recording / reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636259B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0264953A (en) * | 1988-08-30 | 1990-03-05 | Toshiba Corp | Video recording and reproducing device |
| JP2590372B2 (en) * | 1988-09-20 | 1997-03-12 | 株式会社日立製作所 | Signal recording / reproducing method and apparatus |
-
1983
- 1983-07-14 JP JP58128621A patent/JPH0636259B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6020348A (en) | 1985-02-01 |
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