JPH02312011A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPH02312011A
JPH02312011A JP13492089A JP13492089A JPH02312011A JP H02312011 A JPH02312011 A JP H02312011A JP 13492089 A JP13492089 A JP 13492089A JP 13492089 A JP13492089 A JP 13492089A JP H02312011 A JPH02312011 A JP H02312011A
Authority
JP
Japan
Prior art keywords
recording
head
reproducing
signal
amplifier
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
Application number
JP13492089A
Other languages
Japanese (ja)
Inventor
Shoji Hamazaki
浜崎 祥司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13492089A priority Critical patent/JPH02312011A/en
Publication of JPH02312011A publication Critical patent/JPH02312011A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To execute recording and reproducing with the aid of using one head even when dust or the like is attached to the other head by simultaneously execution recording and reproducing on one track with the aid of two sets of heads and providing the switching unit of a reproducing signal. CONSTITUTION:A signal whose recording current value is regarded as optimum by a recording amplifier 11 is simultaneously written on an identical track on a tape 23 at a half track width of an ordinary track width like tracks 21 and 22 by the magnetic heads 12 and 13 whose fitting positions on a rotating cylinder are properly selected. Simultaneously the switching unit 14 of the reproducing signal is provided. Then, the recorded signal is simultaneously reproduced by using the magnetic heads 12 and 13 at the time of reproducing. At this time, the switching unit 14 is switched and the reproducing is executed with one head by a reproducing amplifier 15 when the dust is attached to the other head. As the result, the recording and reproducing is correctly executed even when the dust is attached to one head.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、回転ヘッドにより記録再生する磁気記録再生
装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus that records and reproduces information using a rotary head.

従来の技術 磁気記録再生装置、例えばビデオテープレコーダ(VT
Rとする)では、1つのトラックに1つのヘッドで記録
再生し、1つの場面を1つのヘッドで記録再生する構成
となっている。
Conventional technology Magnetic recording and reproducing devices, such as video tape recorders (VT
R), the configuration is such that one track is recorded and reproduced using one head, and one scene is recorded and reproduced using one head.

以下、従来の磁気記録再生装置について説明する。A conventional magnetic recording/reproducing device will be explained below.

第4図は従来の磁気記録再生装置の映像信号記録再生系
を示すブロック図である。第4図において、■は映像入
力端子である。2は映像信号処理ブロックで、記録する
ための処理ブロックである。3は記録電流を最適にする
記録増幅器、4は記録と再生で使用するヘッドである。
FIG. 4 is a block diagram showing a video signal recording and reproducing system of a conventional magnetic recording and reproducing apparatus. In FIG. 4, ■ is a video input terminal. 2 is a video signal processing block, which is a processing block for recording. 3 is a recording amplifier that optimizes the recording current, and 4 is a head used for recording and reproduction.

5は再生増幅器で、6は再生用の映像信号処理ブロック
である。7は映像出力端子である。
5 is a reproducing amplifier, and 6 is a video signal processing block for reproduction. 7 is a video output terminal.

以上のように構成された磁気記録再生装置について以下
その動作について説明する。
The operation of the magnetic recording/reproducing apparatus configured as described above will be explained below.

まず、映像入力端子1より入力された信号は、記録映像
処理ブロック2でテープに記録される状態に処理され、
記録増幅器3により最適の電流値に増幅され、ヘッド4
によりテープに記録される。記録された信号は同じヘッ
ド4で再生され、再生増幅器5により適切な値に増幅さ
れ、再生映像処理回路6により元の映像信号に処理し、
出力端子7より出力される。
First, the signal input from the video input terminal 1 is processed by the recording video processing block 2 to be recorded on tape.
The recording amplifier 3 amplifies the current to the optimum value, and the head 4
recorded on tape. The recorded signal is played back by the same head 4, amplified to an appropriate value by a playback amplifier 5, processed into the original video signal by a playback video processing circuit 6,
It is output from the output terminal 7.

発明が解決しようとする課題 しかしながら上記の従来の構成では、−場面を記録再生
するのに同一の1つのヘッドを用いているので、記録時
にそのヘッドにゴミが付着した場合、実際にはテープ上
に記録ができないのに記録動作をさせてしまうという欠
点を有していた。
Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, one and the same head is used to record and play back scenes, so if dust adheres to the head during recording, it will actually cause damage to the tape. This has the disadvantage that recording operation is performed even though recording is not possible.

本発明は上記従来の課題を解決するもので通常トラック
幅の中に2組の興なるヘッドで、同じ場面を記録再生し
、片方のヘッドにゴミが付着し記録できていない場合で
も、もう片方のヘッドで記録再生することが可能という
磁気記録再生装置を提供することを目的とする。
The present invention solves the above-mentioned conventional problem. Normally, two sets of heads arranged in a track width record and reproduce the same scene, and even if one head is unable to record due to dust, the other head An object of the present invention is to provide a magnetic recording/reproducing device capable of recording/reproducing data using a head of the present invention.

課題を解決するための手段 この目的を達成するために本発明の磁気記録再生装置は
、記録するための信号を増幅する記録増幅器と、その増
幅された信号をテープ上に同一トラックを2分する形で
記録し再生する2組のヘッドと、その2組のヘッドの再
生信号を切り換える切換器と、その出力を再生信号とし
て増幅する再生増幅器とで構成している。
Means for Solving the Problems In order to achieve this object, the magnetic recording and reproducing apparatus of the present invention includes a recording amplifier that amplifies a signal for recording, and a recording amplifier that divides the same track into two on a tape with the amplified signal. It consists of two sets of heads that record and play back data, a switch that switches the reproduction signals of the two sets of heads, and a reproduction amplifier that amplifies the output as a reproduction signal.

作   用 ゛ この構成によって、記録増幅器で、最適な記録電流
値にされた信号を、2組のヘッドで同時にテープ上に記
録、再生することができ、片方のヘッドにゴミが付着し
、記録ができていない場合も、切り換え器を切り換える
ことによりゴミの付着していない方のヘッドで記録した
信号を再生することができる。
Operation: With this configuration, signals that have been adjusted to the optimum recording current value by the recording amplifier can be recorded and reproduced simultaneously on the tape using two sets of heads, and there is no possibility that dust may adhere to one of the heads and the recording will be interrupted. Even if this is not the case, by switching the switch, it is possible to reproduce the signal recorded by the head to which no dust is attached.

実施例 以下本発明の第1の実施例について、図面を参照しなが
ら説明する。第1図は本発明の第1の実施例における磁
気記録再生装置のブロック図を示すものであり、11は
記録増幅器、12は記録再生するヘッド、13はヘッド
12と同じ信号を記録再生するヘッド、14はヘッド1
2と13からの再生出力信号を切り換える切換器、15
は再生増幅器である。
EXAMPLE A first example of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of a magnetic recording and reproducing apparatus according to a first embodiment of the present invention, in which 11 is a recording amplifier, 12 is a head for recording and reproducing, and 13 is a head for recording and reproducing the same signal as the head 12. , 14 is head 1
a switch for switching the playback output signals from 2 and 13; 15;
is a regenerative amplifier.

以上のように構成された磁気記録再生装置について、第
2図及び第3図を用いてその動作を説明する。
The operation of the magnetic recording/reproducing apparatus configured as described above will be explained with reference to FIGS. 2 and 3.

第2図は、2組のヘッドのテープ上の記録パターンを示
すものであり、第3図はシリンダー上でのヘッドの取り
付は位置を示すものである。
FIG. 2 shows the recording patterns of the two sets of heads on the tape, and FIG. 3 shows the mounting positions of the heads on the cylinder.

第2図において、21.22はヘッド12.13により
テープ上に書かれたトラックを示す。23はテープを示
す。第3図において、31はシリンダーで、32.33
はヘッド12.13の取り付は位置を示す。34.35
は反対フィールドのヘッドの取付は位置を示す。
In FIG. 2, 21.22 indicates the tracks written on the tape by heads 12.13. 23 indicates a tape. In Figure 3, 31 is a cylinder, 32.33
indicates the mounting position of the head 12.13. 34.35
indicates the mounting position of the opposite field head.

まず記録増幅器11により、最適記録電流にされ、ヘッ
ド12.13によりテープ上に記録される。ヘッド12
.13はトラック21.22のように、現状のトラック
幅の半分のトラック幅でテープ上に記録し、32.33
の位置に取り付けであるので、トラック21.22のよ
うに同時にテープに書き込むことができる。記録された
信号は、再生時に同じヘッド12.13により読み込ま
れ、切換器14に入力される。切換器14では正しく記
録できているヘッドの方を任意に選択でき、片方のヘッ
ドにゴミが付着し記録できていない場合、切り換えるこ
とができる。切換器14の出力は、再生増幅器15によ
って再生信号として最適な値に増幅される。
First, the recording amplifier 11 sets the optimum recording current, and the head 12.13 records on the tape. head 12
.. 13 is recorded on the tape with a track width that is half the current track width, like tracks 21.22, and 32.33.
Since the tracks 21 and 22 are mounted on the tape, they can be written on the tape at the same time, such as tracks 21 and 22. The recorded signal is read by the same head 12, 13 during reproduction and input to the switch 14. The switch 14 can arbitrarily select the head that is correctly recording, and if one of the heads is not able to record due to dust, it can be switched. The output of the switch 14 is amplified by a regenerative amplifier 15 to an optimum value as a regenerative signal.

以上のように本実施例によれば、例えばVH32時間モ
ードの58μmのトラック幅に、2組のヘッドで同じ信
号を記録再生し、再生時に切換器14にて切り換えるこ
とにより、ゴミ等がヘッドに付着し記録ができていない
場合でも、片方のヘッドで記録再生することができる。
As described above, according to this embodiment, for example, two sets of heads record and reproduce the same signal on a track width of 58 μm in the VH 32-hour mode, and the switch 14 switches the signal during reproduction, so that dust and the like can be removed from the heads. Even if recording is not possible due to adhesion, recording and playback can be performed using one head.

なお第1の実施例において、再生増幅器15は切換器1
4の、前で各ヘッドに再生増幅器を付けてもかまわない
。また、記録増幅器も各ヘッドに付けてもかまわない。
Note that in the first embodiment, the regenerative amplifier 15 is
A regenerative amplifier may be attached to each head in front of step 4. Further, a recording amplifier may also be attached to each head.

発明の効果 以上のように本発明は、1トラツクを2組のヘッドで同
時に記録再生することにより、片方のヘッドにゴミが付
着し記録できなかった場合でも、再生時に切換器でヘッ
ド出力信号を切り換えることにより、正しく記録再生す
ることができるという優れた磁気記録再生装置を実現で
きるものである。
Effects of the Invention As described above, the present invention allows one track to be recorded and reproduced simultaneously using two sets of heads, so that even if one head is not able to record due to dust, the head output signal can be changed by a switch during reproduction. By switching, it is possible to realize an excellent magnetic recording and reproducing device that can perform recording and reproducing correctly.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例における磁気記録再生装置のブ
ロック図、第2図はテープ上の記録パターン図、第3図
はシリンダーのヘッドの取り付は位置を示す配置図、第
4図は従来の磁気記録再生装置の映像系のブロック図で
ある。 11・・・・・・記録増幅器、12・・・・・・ヘッド
、13・・・・・・12と同時に記録するヘッド、14
・・・・・・ヘッド出力信号の切換器、15・・・・・
・再生増幅器、21・・・・・・ヘッド12により書き
込まれた時のトラック幅、22・・・・・・ヘッド13
により書き込まれた時のトラック幅、23・・・・・・
ビデオテープ、31・・・・・・シリンダー、32.3
3・・・・・・同時記録Rチャンネル用ヘッド、34.
35・・・・・・同時記録しチャンネン用ヘッド。 代理人の氏名 弁理士 粟野重孝 ほか1名第1図 第 3 図 第4図
FIG. 1 is a block diagram of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a recording pattern diagram on a tape, FIG. 3 is a layout diagram showing the mounting position of the cylinder head, and FIG. 4 is a diagram showing the mounting position of the cylinder head. 1 is a block diagram of a video system of a conventional magnetic recording/reproducing device. 11... Recording amplifier, 12... Head, 13... Head that records simultaneously with 12, 14
...Head output signal switch, 15...
- Reproducing amplifier, 21... Track width when written by head 12, 22... Head 13
Track width when written by 23...
Videotape, 31...Cylinder, 32.3
3. Simultaneous recording R channel head, 34.
35... Simultaneous recording and channel head. Name of agent: Patent attorney Shigetaka Awano and one other person Figure 1 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 記録するための信号を増幅する記録増幅器と、その増幅
された信号をテープ上に同一トラックを2分する形で記
録し再生する2組のヘッドと、その2組のヘッドの再生
信号を切り換える切換器と、その切換器の出力を再生信
号として増幅する再生増幅器とを備えた磁気記録再生装
置。
A recording amplifier that amplifies the signal for recording, two sets of heads that record and reproduce the amplified signals on the tape by dividing the same track into two, and a switch that switches the reproduction signals of the two sets of heads. A magnetic recording and reproducing device comprising a switch and a reproducing amplifier that amplifies the output of the switch as a reproduction signal.
JP13492089A 1989-05-29 1989-05-29 Magnetic recording and reproducing device Pending JPH02312011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13492089A JPH02312011A (en) 1989-05-29 1989-05-29 Magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13492089A JPH02312011A (en) 1989-05-29 1989-05-29 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPH02312011A true JPH02312011A (en) 1990-12-27

Family

ID=15139631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13492089A Pending JPH02312011A (en) 1989-05-29 1989-05-29 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPH02312011A (en)

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