JPS628351A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS628351A
JPS628351A JP60148809A JP14880985A JPS628351A JP S628351 A JPS628351 A JP S628351A JP 60148809 A JP60148809 A JP 60148809A JP 14880985 A JP14880985 A JP 14880985A JP S628351 A JPS628351 A JP S628351A
Authority
JP
Japan
Prior art keywords
signal
circuit
recorded
magnetic tape
control
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
JP60148809A
Other languages
Japanese (ja)
Inventor
Hiroshi Fukunaga
浩 福永
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP60148809A priority Critical patent/JPS628351A/en
Publication of JPS628351A publication Critical patent/JPS628351A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To seek quickly and easily a recorded part by bringing the mode for an unrecorded part of a magnetic tape to the high speed reproduction mode automatically. CONSTITUTION:When no video signal is recorded on a magnetic tape 1, since its vertical synchronizing signal is not recorded, no control signal is extracted from a control head 2. In the reproduction state as above, when no control signal is inputted for a prescribed time to a control circuit 4, a no-signal detection circuit 5 detects it and is operated and outputs a signal commanding the high speed reproduction mode to the control circuit 4. Thus, the control circuit 4 is changed over into the high speed reproduction mode and a drive signal causing the speed of high speed reproduction is outputted to a capstan drive circuit 3 to bring the magnetic tape 1 to the high speed running. When the head 2 comes to a part where a video signal is recorded, the control signal is outputted again, the no-signal detection circuit 5 is turned off and the mode is switched again into the normal reproduction state.

Description

【発明の詳細な説明】 [産業上の利用分野コ この発明は磁気記録再生装置にかかり、特にそれのテー
プ走行速度制御に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing device, and particularly relates to tape running speed control thereof.

[従来の技術] 第2図は従来の磁気記録再生装置の磁気テープ走行制御
系を示す概略構成図で1図において(1)は磁気テープ
、(2)は磁気テープ(1)からコントロール信号を検
出するコントロールヘッド、(3)は磁気テープ(1)
を走行させるキャプスタンモータの駆動回路、(4)は
コントロールヘッド(2)から再生されるコントロール
信号に同期してキャプスターンモータを駆動させるため
の制御回路である。
[Prior Art] Fig. 2 is a schematic configuration diagram showing a magnetic tape running control system of a conventional magnetic recording/reproducing device. The control head to detect (3) is the magnetic tape (1)
(4) is a control circuit for driving the capstan motor in synchronization with a control signal reproduced from the control head (2).

次にその動作について説明する。磁気テープ(1)を再
生すると磁気テープ(1)に記録されたコントロール信
号がコントロールヘッド(2)によって再生され、制御
回路(4)に入力される。制御回路(4)では入力され
たコントロール信号に同期したキャプスタン速度制御信
号をキャプスターンモータ駆動回路(3)に送り、キャ
プスターンモータを駆動する。磁気テープ(1)にコン
トロール信号が記録されていない場合でも制御回路(4
)は再生状態となり、キャプスタンモータ駆動回路(3
)に再生状態のキャプスタン速度制御信号を送り、キャ
プスタンモータを駆動する。
Next, its operation will be explained. When the magnetic tape (1) is reproduced, the control signal recorded on the magnetic tape (1) is reproduced by the control head (2) and input to the control circuit (4). The control circuit (4) sends a capstan speed control signal synchronized with the input control signal to the capstern motor drive circuit (3) to drive the capstan motor. Even if no control signal is recorded on the magnetic tape (1), the control circuit (4)
) enters the regeneration state, and the capstan motor drive circuit (3
) to drive the capstan motor.

[発明が解決しようとする問題点] 従来の磁気記録再生装置は以上のように構成されている
ので、ビデオ信号が記録されていない磁気テープの部分
を再生した場合操作者がビデオ信号の記録されている磁
気テープの部分を探さねばならず、手間がかかるなどの
問題点があった。
[Problems to be Solved by the Invention] Since the conventional magnetic recording/reproducing device is configured as described above, when an operator plays back a portion of a magnetic tape where no video signal is recorded, the operator cannot confirm whether the video signal is recorded or not. This poses problems such as having to search for the part of the magnetic tape that is attached, which is time-consuming.

この発明は上記のような問題点を解消するためになされ
たもので磁気テープの記録部分を速かに探すことができ
る磁気記録再生装置を得ることを目的とする。
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a magnetic recording/reproducing apparatus that can quickly search for a recorded portion of a magnetic tape.

[問題点を解決するための手段] この発明にかかる磁気記録再生装置は磁気テープめ無記
録部分を検出する回路を設け、この回路による再生時の
無記録部分検出に応じ、制御回路を高速度再生状態に切
換えるようにしたものである。
[Means for Solving the Problems] A magnetic recording and reproducing apparatus according to the present invention is provided with a circuit for detecting a non-recorded portion of a magnetic tape, and in response to detection of a non-recorded portion during playback by this circuit, the control circuit is operated at high speed. It is designed to switch to a playback state.

[作 用] この発明は磁気テープの無記録部分が検出され、その検
出に応じ制御回路が高速度再生状態に切換えられ、制御
回路からキャプスタンモータの高速度信号が出力され、
磁気テープが無記録部分で高速に走行され、記録部分を
探すのが容易となる。
[Function] According to the present invention, a non-recorded portion of a magnetic tape is detected, and in response to the detection, the control circuit is switched to a high-speed playback state, and a high-speed signal for the capstan motor is output from the control circuit.
The magnetic tape is run at high speed in the non-recorded area, making it easy to search for the recorded area.

[実施例] 、以下この発明の一実施例を図について説明する。[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

第1図はこの発明の一実施例を示す概略構成図で。FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

図において(1)〜(4)は第2図の従来例の同一符号
と同−或は相当部分を示し、(1)は磁気テープ。
In the figure, (1) to (4) indicate the same or corresponding parts as the same reference numerals in the conventional example in FIG. 2, and (1) is a magnetic tape.

(2)は磁気テープ(1)から垂直同期信号を再生分離
し、コントロール信号として取り出すコントロールヘッ
ド、(3)は磁気テープ(1)を走行させるキャプスタ
ンモータの駆動回路、(4)はコントロールヘッド(2
)からのコントロール信号に同期してキャプスターンモ
ータを駆動させるようキャプスターンモータ駆動回路(
3)を制御する制御回路、(5)はコントロール信号が
記録されていないことを検出し、その検出に応じ制御回
路(4)を高速再生状態に切換える無信号検出回路であ
る。
(2) is a control head that reproduces and separates the vertical synchronization signal from the magnetic tape (1) and takes it out as a control signal; (3) is a drive circuit for the capstan motor that runs the magnetic tape (1); and (4) is a control head. (2
) to drive the capstern motor in synchronization with the control signal from the capstern motor drive circuit (
3), and (5) is a no-signal detection circuit that detects that no control signal is recorded and switches the control circuit (4) to a high-speed reproduction state in response to this detection.

次にその動作について説明する。磁気テープ(1)にビ
デオ信号が記録されており、それの垂直同期信号がコン
トロール信号として再生されている場合は、第2図の従
来例のものと同様であるので詳細説明を省略する。磁気
テープ(1)にビデオ信号が記録されていない場合はそ
れの垂同期信号も記録されていないから再生してもコン
トロールヘッド(2)からコントロール信号が取り出さ
れない。
Next, its operation will be explained. If a video signal is recorded on the magnetic tape (1) and its vertical synchronizing signal is reproduced as a control signal, it is the same as the conventional example shown in FIG. 2, so detailed explanation will be omitted. If no video signal is recorded on the magnetic tape (1), its vertical synchronization signal is also not recorded, so no control signal is taken out from the control head (2) even if it is reproduced.

このような再生状態においてコントロール信号が所定時
間制御回路(4)に入力されないと、無信号検出回路(
5)がこれを検出して動作し、制御回路(4)に高速度
再生状態を指示する信号を出力する。
If a control signal is not input to the control circuit (4) for a predetermined period of time in such a playback state, the no-signal detection circuit (
5) detects this, operates, and outputs a signal instructing the control circuit (4) to a high-speed reproduction state.

これによって制御回路(4)は高速度再生状態に切換え
られ、キャプスタン駆動回路(3)に高速再生の速度と
なる駆動信号が出力され、磁気テープ(1)は高速走行
となる。このようにして磁気テープ(1)のビデオ信号
が記録されていない部分は速かに走行し、ヘッド(2)
がビデオ信号が記録されている部分にくると、再びコン
トロール信号が出力され、無信号検出回路(5)はオフ
となり、通常の再生状態に再び切換えられる。以後は記
録ビデオ信号中の垂直同期信号即ちコントロール信号に
同期して磁気テープ(1)が駆動される。
As a result, the control circuit (4) is switched to a high-speed playback state, and a drive signal corresponding to the high-speed playback speed is output to the capstan drive circuit (3), so that the magnetic tape (1) runs at high speed. In this way, the part of the magnetic tape (1) where the video signal is not recorded runs quickly, and the head (2)
When it reaches the part where the video signal is recorded, the control signal is outputted again, the no-signal detection circuit (5) is turned off, and the normal reproduction state is again switched. Thereafter, the magnetic tape (1) is driven in synchronization with the vertical synchronization signal, ie, the control signal, in the recording video signal.

[発明の効果] 以上のようにこの発明によれば、磁気テープの未記録部
分を自動的に高速度再生となるようにしたので、記録部
分を探するが容易に速かに行い得る磁気記録再生装置が
得られる効果がある。
[Effects of the Invention] As described above, according to the present invention, the unrecorded portion of the magnetic tape is automatically played back at high speed. This has the effect of providing a playback device.

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

第1図はこの発明の一実施例を示す概略構成図、第2図
は従来の磁気記録再生装置の磁気テープ走行制御系を示
す概略構成図である。 図において(1)は磁気テープ、(2)はコントロール
ヘッド、(3)はキャプスタンモータ駆動回路、(4)
は制御回路、(5)は無信号検出回路である。 図中同一符号は同−或は相当部分を示す。
FIG. 1 is a schematic block diagram showing an embodiment of the present invention, and FIG. 2 is a schematic block diagram showing a magnetic tape running control system of a conventional magnetic recording/reproducing apparatus. In the figure, (1) is the magnetic tape, (2) is the control head, (3) is the capstan motor drive circuit, and (4) is the capstan motor drive circuit.
(5) is a control circuit, and (5) is a no-signal detection circuit. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (3)

【特許請求の範囲】[Claims] (1)磁気テープからの再生コントロール信号を検出し
、このコントロール信号に応じた速度でテープ走行用キ
ャプスターンモータを駆動するよう制御する制御回路を
備えた磁気記録再生装置において、上記磁気テープの無
記録部分を検出する回路を設け、この回路による再生時
の無記録部分検出に応じ、上記制御回路を、これが上記
テープ走行用キャプスターンモータを高速度に駆動制御
する高速度再生状態に切換えるようにしたことを特徴と
する磁気記録再生装置。
(1) In a magnetic recording and reproducing apparatus equipped with a control circuit that detects a reproduction control signal from a magnetic tape and controls the tape running capstern motor to be driven at a speed according to the control signal, A circuit for detecting a recorded portion is provided, and in response to detection of a non-recorded portion during playback by this circuit, the control circuit is switched to a high-speed playback state in which the capstern motor for driving the tape is controlled to drive at high speed. A magnetic recording/reproducing device characterized by:
(2)上機無記録部分を検出する回路は上記磁気テープ
からの再生コントロール信号の無信号を検出する無信号
検出回路である特許請求の範囲第1項記載の磁気記録再
生装置。
(2) The magnetic recording/reproducing apparatus according to claim 1, wherein the circuit for detecting a non-recorded portion on the machine is a non-signal detection circuit for detecting a non-signal of a reproduction control signal from the magnetic tape.
(3)上記磁気テープはビデオ信号が記録されたもので
あり、上記コントロール信号は再生ビデオ信号から分離
された垂直同期信号により作られたものである特許請求
の範囲第2項記載の磁気記録再生装置。
(3) The magnetic recording and reproducing device according to claim 2, wherein the magnetic tape has a video signal recorded thereon, and the control signal is generated by a vertical synchronization signal separated from the reproduced video signal. Device.
JP60148809A 1985-07-04 1985-07-04 Magnetic recording and reproducing device Pending JPS628351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60148809A JPS628351A (en) 1985-07-04 1985-07-04 Magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60148809A JPS628351A (en) 1985-07-04 1985-07-04 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS628351A true JPS628351A (en) 1987-01-16

Family

ID=15461193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60148809A Pending JPS628351A (en) 1985-07-04 1985-07-04 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS628351A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03104044A (en) * 1989-09-08 1991-05-01 Samsung Electron Co Ltd At-regeneration nonpicture region skipping method of recording medium drive

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582740B2 (en) * 1973-08-16 1983-01-18 ウイリアム サミユエル フオ−チユン Handa-zuke-yochitsupu

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582740B2 (en) * 1973-08-16 1983-01-18 ウイリアム サミユエル フオ−チユン Handa-zuke-yochitsupu

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03104044A (en) * 1989-09-08 1991-05-01 Samsung Electron Co Ltd At-regeneration nonpicture region skipping method of recording medium drive

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