JPS6142753A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To compensate the slack in a tape which is made during a power failure by detecting the device before the power failure being in fast-forward or rewind mode preferentially to other operations after the power failure occurs or when the power source is turned on again, and placing the device in fast-forward or rewind mode for a specific time. CONSTITUTION:When the power failure occurs during the operation of a mechanism 7 and then recovers, a mechanism control part 4 detects the mode of a mode switch 3 preferentially to any external key operation; if the switch is placed at a fast-forward or rewind mode side, the tape is fed fast or rewound in the state for several seconds long enough to take up the slack in the tape and then a mechanism driving motor 6 is driven to move the mechanism 7 in a stop state and set it ready. Thus, the tape slacks in case of a power failure, but the slack in the tape is taken up right after the power source recovers to compensate the slack in the tape which is made during the power failure.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、モータドライブのメカニズムを使用し、キャ
プスタンモータでリールを駆動するヘリカルスキャン型
の磁気記録再生装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a helical scan type magnetic recording and reproducing device that uses a motor drive mechanism and drives a reel with a capstan motor.

従来例の構成とその問題点 第１図は従来の磁気記録再生装置の要部の回路ブロック
図で、（１）は電源、（２）は停電検出回路、（３）は
モードスイッチ、（４）は通常時のメカニズム制御部、
（５）は停電補償回路、（６）はメカニズム駆動用モー
タ、（７）はメカニズムである。メカニズム（７）が動
作中に電源（１）がオフすると、停電検出回路（２）が
停電状態を検出し、さらにモードスイッチ（３）のポジ
ションが早送り又は巻き戻しモードであるか否かを検出
する。メカニズム制御部（４）は、この時動作しない。Configuration of the conventional example and its problems Figure 1 is a circuit block diagram of the main parts of a conventional magnetic recording/reproducing device. (1) is a power supply, (2) is a power failure detection circuit, (3) is a mode switch, and (4) ) is the mechanism control part during normal operation,
(5) is a power failure compensation circuit, (6) is a mechanism drive motor, and (7) is a mechanism. When the power supply (1) is turned off while the mechanism (7) is operating, the power failure detection circuit (2) detects the power failure condition and further detects whether the mode switch (3) position is in fast forward or rewind mode. do. The mechanism control section (4) does not operate at this time.

その結果、早送り又は巻き戻しモードの場合は、停電補
償回路（５）がらメカニズム駆動用モータ（６）に電源
が供給され、メカニズム駆動用モータ（６）がメカニズ
ム（７）を動がし、高速で回転しているテープリールに
ブレーキをかけて、テープの動きを止めて、テープたる
みを防いでいる。しかしながらこのような従来の方法で
は、停電補償回路（５）として、大容量のコンデン弁が
必要で、コストアップとなり、さらに実装面でも不便で
あった。As a result, in the case of fast forward or rewind mode, power is supplied to the mechanism drive motor (6) from the power outage compensation circuit (5), and the mechanism drive motor (6) moves the mechanism (7) at high speed. This applies a brake to the rotating tape reel to stop the tape from moving and prevent the tape from sagging. However, such a conventional method requires a large-capacity condenser valve as the power failure compensation circuit (5), which increases cost and is also inconvenient in terms of implementation.

発明の目的 本発明は上記従来の欠点を解消するもので、大容量のコ
ンデンサ等を用いることなくテープたるみを補償できる
磁気記録再生装置を提供することを目的とする。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and an object thereof is to provide a magnetic recording/reproducing apparatus that can compensate for tape slack without using a large-capacity capacitor or the like.

発明の構成 上記目的を達成するため、本発明の磁気記録再生装置は
、早送り又は巻き戻し中に停電した場合に、電源が再び
入った時、いかなる外部がらのキー操作よりも優先して
、停電前のモードが早送り又は巻き戻しモードであるこ
とを検知し、停電時に発生したテープたるみを取るため
に一定時間巻き戻し又体早送りを行なう構成としたもの
である。Structure of the Invention In order to achieve the above object, the magnetic recording/reproducing device of the present invention has a magnetic recording/reproducing device which, when the power goes out during fast forwarding or rewinding, takes priority over any external key operations when the power goes back on. The system detects whether the previous mode is a fast forward or rewind mode, and performs rewind or fast forward for a certain period of time in order to take up tape slack that occurs during a power outage.

実施例の説明 以下１本発明の一実施例について１図面に基づいて説明
する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to one drawing.

第２図は本発明の一実施例における磁気記録再生装置の
要部の回路ブロック図で、第１図に示す構成要素と同一
の構成要素には同一の符号を付している。第２図におい
て、（１）は電源、（２）はモードスイッチ、（４）は
メカニズム制御部、（６）はメカニズム駆動用モータ、
（７）はメカニズムである。FIG. 2 is a circuit block diagram of the main parts of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, in which the same components as those shown in FIG. 1 are given the same reference numerals. In Fig. 2, (1) is a power supply, (2) is a mode switch, (4) is a mechanism control unit, (6) is a mechanism drive motor,
(7) is the mechanism.

メカニズム（７）が動作中に停電した場合、そのまま放
置しておく。次に停電が復帰した場合、メカニズム制御
部（４）がモードスイッチ（３）のモードを検出して、
そのポジションが早送り又は巻き戻しモードであったら
、そのままの状態で巻き戻し又は早送りを数秒間（テー
プたるみが取れる時間）行なってから、メカニズム駆動
用モータ（６）を動かして、メカニズム（７）を停止状
態まで動かして待機する。If a power outage occurs while mechanism (7) is in operation, leave it as is. Next, when the power is restored, the mechanism control unit (4) detects the mode of the mode switch (3) and
If the position is in fast forward or rewind mode, rewind or fast forward in that state for a few seconds (time to take up the slack in the tape), then move the mechanism drive motor (6) to start the mechanism (7). Move it to a stopped state and wait.

このように本実施例では、停電時はテープたるみが発生
するが、停電復帰後部テープを巻き取っているため、以
後の動作でテープダメージは出ないで、従来例と同等の
効果が得られる。さらに。As described above, in this embodiment, tape slack occurs during a power outage, but since the tape is wound up after the power outage is restored, the tape will not be damaged in subsequent operations, and the same effect as the conventional example can be obtained. moreover.

従来の停電検出回路（２）と停電補償回路（５）とが不
要となり、コストダウンを図れると共に実装の面でもメ
リットが出てくる。また、メカニズム制御部（４）につ
いても、マイクロコンピュータ−等を使用すれば、従来
のものとほぼ同等のもので構成できる。The conventional power failure detection circuit (2) and power failure compensation circuit (5) are no longer necessary, which reduces costs and provides advantages in terms of implementation. Further, the mechanism control section (4) can also be constructed of something substantially equivalent to a conventional one by using a microcomputer or the like.

発明の詳細 な説明したように本発明によれば、停電検出回路や停電
補ｆｆａ回路を用いることなく停電によるテープたるみ
の補償を行なうことができ、コストダウンを実現できる
と共に、実装の面でも有利である。As described in detail, according to the present invention, it is possible to compensate for tape slack due to a power outage without using a power outage detection circuit or a power outage compensating circuit, and it is possible to realize cost reduction and is also advantageous in terms of implementation. It is.

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

第１図は従来の磁気記録再生装置の要部の回路ブロック
図、第２図は本発明の一実施例における磁気記録再生装
置の要部の回路ブロック図である。 （１）・・・電源、（３）・・・モードスイッチ、（４
）・・・メカニズム制御部、（６）・・・メカニズム駆
動用モータ。 （７）・・・メカニズム 代理人　　　　森　　　本　　　義　　　弘第１囚 ダ 第？図FIG. 1 is a circuit block diagram of the main parts of a conventional magnetic recording/reproducing apparatus, and FIG. 2 is a circuit block diagram of the main parts of a magnetic recording/reproducing apparatus according to an embodiment of the present invention. (1)...Power supply, (3)...Mode switch, (4
)... Mechanism control unit, (6)... Mechanism drive motor. (7)... Mechanism agent Yoshihiro Morimoto the first prisoner? figure

Claims (1)

【特許請求の範囲】[Claims] １、早送り又は巻き戻し中に停電した場合に、電源が再
び入った時、いかなる外部からのキー操作よりも優先し
て、停電前のモードが早送り又は巻き戻しモードである
ことを検知し、停電時に発生したテープたるみを取るた
めに一定時間巻き戻し又は早送りを行なう構成とした磁
気記録再生装置。1. If there is a power outage during fast forwarding or rewinding, when the power is turned back on, it will take priority over any external key operations and detect that the mode before the power outage was fast forwarding or rewinding, and A magnetic recording and reproducing device configured to perform rewinding or fast forwarding for a certain period of time to take up tape slack that occurs when the tape is slackened.