JPH04366448A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of signal deterioration at the time of dubbing, etc., by providing a host device which converts FM signals reproduced from one magnetic recording medium into optical signal and a slave device which converts the optical signals into FM signals and records the FM signals on the other magnetic recording medium. CONSTITUTION:When a host device 11 reproduces magnetic recorded signals on a master tape 1, a reproducing head 2a converts the signals into FM signals and transmits the FM signals to a rotary transformer 3a. The reproduced FM signals are subject to noise removal, F-characteristic improvement, etc., at a reproduced FM signal processing circuit 30 after the FM signals are amplified by means of a reproduction amplifier 4. The processed FM signals are inputted to a slave device 24 from its optical signal input terminal 34 through an optical signal output terminal 32 and optical cable 33 after the signals are converted into optical signals by means of an FM/optical signal conversion circuit 31. Then the optical signals are recorded on a dubbing tape 23 through a recording head 2b, etc., after the optical signals are processed for noise removal, f-characteristic improvement, etc., by means of a recording FM signal processing circuit 36. Thus the tape 23 which faithfully records the recorded signals of the tape 1 can be produced.

Description

【発明の詳細な説明】[Detailed description of the invention]

【０００１】0001

【産業上の利用分野】この発明は、ビデオテープ等のダ
ビング時において、親機の再生出力をダイレクトに子機
（記録側）に光伝送して記録する磁気記録再生装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus that directly optically transmits and records the reproduction output of a master unit to a slave unit (recording side) when dubbing a video tape or the like.

【０００２】0002

【従来の技術】図２は従来の磁気記録再生装置における
ダビング時の簡略構成図を示している。図２において、
１はマスターテープ、２ａは回転可能に設けられた再生
ヘッド、３ａはロータリートランス、４は再生アンプ、
５ａはハイパスフィルタ（以下、ＨＰＦと称す。）、６
ａはローパスフィルタ（以下、ＬＰＦと称す。）、７は
再生輝度信号処理回路、８は再生色信号処理回路、９は
再生信号合成回路、１０は出力アンプ、１２は出力端子
である。１１Ａは親機で、上記再生ヘッド２ａ〜出力端
子１２の構成要素で構成されている。2. Description of the Related Art FIG. 2 shows a simplified configuration diagram of a conventional magnetic recording/reproducing apparatus during dubbing. In Figure 2,
1 is a master tape, 2a is a rotatably provided playback head, 3a is a rotary transformer, 4 is a playback amplifier,
5a is a high pass filter (hereinafter referred to as HPF); 6
a is a low-pass filter (hereinafter referred to as LPF); 7 is a reproduction luminance signal processing circuit; 8 is a reproduction color signal processing circuit; 9 is a reproduction signal synthesis circuit; 10 is an output amplifier; and 12 is an output terminal. Reference numeral 11A denotes a parent unit, which is composed of components from the playback head 2a to the output terminal 12.

【０００３】１３はケーブル、１４は入力端子、１５は
自動利得制御回路（以下、ＡＧＣと称す。）、１６はＹ
／Ｃ分離回路、１７は記録輝度信号処理回路、１８は記
録色信号処理回路、５ｂはＨＰＦ、６ｂはＬＰＦ、１９
は記録信号合成回路、２１は記録アンプ、３ｂはロータ
リートランス、２ｂは回転可能に設けられた記録ヘッド
、２３はダビングテープ、２４Ａは子機で、上記入力端
子１４〜記録ヘッド２ｂの構成要素で構成されている。13 is a cable, 14 is an input terminal, 15 is an automatic gain control circuit (hereinafter referred to as AGC), and 16 is a Y
/C separation circuit, 17 is a recording luminance signal processing circuit, 18 is a recording color signal processing circuit, 5b is an HPF, 6b is an LPF, 19
21 is a recording signal synthesis circuit, 21 is a recording amplifier, 3b is a rotary transformer, 2b is a rotatably provided recording head, 23 is a dubbing tape, and 24A is a slave device, which is a component of the input terminal 14 to the recording head 2b. It is configured.

【０００４】図示矢印方向に駆動されているマスターテ
ープ１を再生ヘッド２ａにより再生すると、再生ヘッド
２ａにより磁気記録信号がＦＭ信号に変換され、ロータ
リートランス３ａを介して再生アンプ４に伝送される。 このＦＭ信号は再生アンプ４により増幅された後、ＨＰ
Ｆ５ａ及びＬＰＦ６ａへ入力される。ＨＰＦ５ａの出力
は再生輝度信号処理回路７を通り輝度信号（以下、Ｙ信
号と称す。）に復調される。ＬＰＦ６ａの出力は、再生
色信号処理回路８を通り色信号（以下、Ｃ信号と称す。 ）に変換される。Ｙ信号とＣ信号は再生信号合成回路９
により合成されて映像信号となり、出力アンプ１０を経
て出力端子１２より出力される。When the master tape 1 being driven in the direction of the arrow shown in the figure is reproduced by the reproduction head 2a, the magnetic recording signal is converted into an FM signal by the reproduction head 2a and transmitted to the reproduction amplifier 4 via the rotary transformer 3a. After this FM signal is amplified by the reproduction amplifier 4,
It is input to F5a and LPF6a. The output of the HPF 5a passes through a reproduced luminance signal processing circuit 7 and is demodulated into a luminance signal (hereinafter referred to as a Y signal). The output of the LPF 6a passes through a reproduced color signal processing circuit 8 and is converted into a color signal (hereinafter referred to as a C signal). Y signal and C signal are reproduced signal synthesis circuit 9
The signals are combined into a video signal, which is outputted from an output terminal 12 via an output amplifier 10.

【０００５】親機１１Ａの出力端子１２より出力された
この映像信号はケーブル１３を通り、子機２４Ａの入力
端子１４から入力される。入力された映像信号はＡＧＣ
１５を通り一定レベルにされた後、Ｙ／Ｃ分離回路１６
を経て、再びＹ信号とＣ信号に分離される。Ｙ信号は記
録輝度信号処理回路１７を経て復調されてＨＰＦ５ｂへ
、Ｃ信号は記録色信号処理回路１８を経て低域変換され
てＬＰＦ６ｂへと入力される。ＨＰＦ５ｂ及びＬＰＦ６
ｂのそれぞれの出力は記録信号合成回路１９にて合成さ
れ、記録アンプ２１にて増幅された後にロータリートラ
ンス３ｂにて伝送され、記録ヘッド２ｂにて図示矢印方
向に駆動されているダビングテープ２３に記録される。This video signal outputted from the output terminal 12 of the base unit 11A passes through the cable 13 and is inputted from the input terminal 14 of the slave unit 24A. The input video signal is AGC
15 to a constant level, Y/C separation circuit 16
After that, it is separated again into a Y signal and a C signal. The Y signal is demodulated via the recording luminance signal processing circuit 17 and input to the HPF 5b, and the C signal is low frequency converted via the recording color signal processing circuit 18 and input to the LPF 6b. HPF5b and LPF6
The respective outputs of b are synthesized by a recording signal synthesis circuit 19, amplified by a recording amplifier 21, transmitted by a rotary transformer 3b, and sent to a dubbing tape 23 driven by a recording head 2b in the direction of the arrow in the figure. recorded.

【０００６】[0006]

【発明が解決しようとする課題】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、ダビング時にお
いて、マスターテープからダビングテープに行くまでの
プロセスに多くの回路及び妨害を受け易いシールド線ケ
ーブルを使用しているため、ダビング映像が劣化する問
題点があった。[Problems to be Solved by the Invention] Since the conventional magnetic recording and reproducing apparatus is constructed as described above, during dubbing, the process from the master tape to the dubbing tape requires many circuits and shields that are susceptible to interference. Because a line cable was used, there was a problem that the dubbed video deteriorated.

【０００７】また、親機の再生ヘッドからの再生信号を
直接、子機の記録信号とすれば多くの回路を通らずにす
むが、伝送路であるケーブル上で妨害等を受けてしまう
などの問題点があった。[0007]Also, if the playback signal from the playback head of the parent unit is directly used as the recording signal of the slave unit, it does not have to pass through many circuits, but it may be subject to interference on the cable, which is the transmission path. There was a problem.

【０００８】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、ダビング等による信号の劣化を
防ぐことの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 device that can prevent signal deterioration due to dubbing or the like.

【０００９】[0009]

【課題を解決するための手段】この発明の磁気記録再生
装置は、一方の磁気記録媒体から再生したＦＭ信号を光
信号に変換する親機と、この光信号をＦＭ信号に変換し
て他方の磁気記録媒体に記録する子機と、親機から子機
へ光信号を伝送する光伝送手段を設けたものである。[Means for Solving the Problems] The magnetic recording and reproducing apparatus of the present invention includes a master unit that converts an FM signal reproduced from one magnetic recording medium into an optical signal, and a main unit that converts the optical signal into an FM signal and transmits the FM signal to the other magnetic recording medium. It is equipped with a slave unit that records on a magnetic recording medium and an optical transmission means that transmits optical signals from the master unit to the slave unit.

【００１０】また、親機と子機の少なくとも一方にＦＭ
信号を改善する改善手段を設けたものである。[0010] Furthermore, at least one of the base unit and the slave unit has an FM
An improvement means is provided to improve the signal.

【００１１】[0011]

【作用】この発明における磁気記録再生装置は、ダビン
グ時において、親機にて再生したＦＭ信号を光信号にし
て光伝送手段により子機に伝送し、再びＦＭ信号に変換
して記録する。[Operation] During dubbing, the magnetic recording/reproducing apparatus of the present invention converts the FM signal reproduced by the parent unit into an optical signal, transmits it to the slave unit by the optical transmission means, converts it back into an FM signal, and records the signal.

【００１２】また、改善手段によりＦＭ信号のノイズ除
去や周波数特性の改善等を行なってより忠実化したＦＭ
信号で記録する。[0012] Furthermore, the improvement means removes noise from the FM signal, improves the frequency characteristics, etc., and improves the fidelity of the FM signal.
Record with a signal.

【００１３】[0013]

【実施例】以下、この発明の一実施例を図について説明
する。図１はダビング時の磁気記録再生装置の簡略構成
を示すものである。図１において、従来例と同一部分に
は同一符号１，２ａ，３ａ，４，２３，２ｂ，３ｂ，２
１を付してあり、再生ヘッド２ａはロータリートランス
３ａを介して再生アンプ４の入力端子に接続され、記録
アンプ２１の出力端子はロータリートランス３ｂを介し
て記録ヘッド２ｂに接続され、従来と同じ構成になって
いる。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a simplified configuration of a magnetic recording/reproducing apparatus for dubbing. In FIG. 1, the same parts as the conventional example have the same reference numerals 1, 2a, 3a, 4, 23, 2b, 3b, 2.
The playback head 2a is connected to the input terminal of the playback amplifier 4 via the rotary transformer 3a, and the output terminal of the recording amplifier 21 is connected to the recording head 2b via the rotary transformer 3b. It is configured.

【００１４】３０は再生アンプ４の後段に設けられ、再
生ＦＭ信号のノイズ除去や周波数特性（以下、ｆ特と称
す。）を改善する再生ＦＭ信号処理回路、３１は再生Ｆ
Ｍ信号処理回路３０の後段に設けられ、ＦＭ信号を光信
号に変換するＦＭ→光信号変換回路であり、その光信号
を光信号出力端子３２に出力する。１１は親機であり、
上記再生ヘッド２ａ〜光信号出力端子３２の構成要素で
構成されている。30 is a reproduction FM signal processing circuit provided after the reproduction amplifier 4 and improves noise removal and frequency characteristics (hereinafter referred to as f characteristics) of the reproduction FM signal; 31 is a reproduction FM signal processing circuit;
It is an FM→optical signal conversion circuit that is provided after the M signal processing circuit 30 and converts the FM signal into an optical signal, and outputs the optical signal to the optical signal output terminal 32. 11 is the main unit,
It is composed of the components of the above-mentioned reproducing head 2a to optical signal output terminal 32.

【００１５】３４は光信号を入力する光信号入力端子、
３５はその光信号をＦＭ信号に変換する光→ＦＭ信号変
換回路、３６は光→ＦＭ信号変換回路３５の後段に設け
られ、ＦＭ信号のノイズ除去やｆ特の改善等の処理をす
る記録ＦＭ信号処理回路であり、その出力は記録アンプ
２１に与えられる。２４は子機であり、光信号入力端子
３４〜記録ヘッド２ｂの構成要素で構成されている。ま
た、３３は光ケーブルであり、光信号出力端子３２と光
信号入力端子３４を接続し、親機１１から子機２４へ光
信号を伝送する。34 is an optical signal input terminal for inputting an optical signal;
35 is an optical to FM signal conversion circuit that converts the optical signal into an FM signal, and 36 is a recording FM that is provided after the optical to FM signal conversion circuit 35 and performs processing such as noise removal and f characteristic improvement of the FM signal. It is a signal processing circuit, and its output is given to the recording amplifier 21. Reference numeral 24 denotes a slave device, which is composed of components from an optical signal input terminal 34 to a recording head 2b. Further, 33 is an optical cable, which connects the optical signal output terminal 32 and the optical signal input terminal 34, and transmits the optical signal from the base unit 11 to the slave unit 24.

【００１６】次に図１を参照して動作について説明する
。親機１１が図示矢印方向に駆動されているマスターテ
ープ１を再生すると、再生ヘッド２ａによりその磁気記
録信号が再生ＦＭ信号に変換されて取り出され、ロータ
リートランス３ａにて伝送される。この再生ＦＭ信号は
再生アンプ４にて増幅された後、再生ＦＭ信号処理回路
３０にてノイズの除去やｆ特改善等の処理を施こされる
。この処理された再生ＦＭ信号は、ＦＭ→光信号変換回
路３１により光信号に変換された後、光信号出力端子３
２より光ケーブル３３を通り、光信号入力端子３４より
入力され、子機２４に伝送される。Next, the operation will be explained with reference to FIG. When the master unit 11 reproduces the master tape 1 driven in the direction of the arrow shown in the figure, the magnetic recording signal is converted into a reproduced FM signal by the reproduction head 2a and taken out, and transmitted by the rotary transformer 3a. This reproduced FM signal is amplified by the reproduction amplifier 4, and then subjected to processing such as noise removal and f-characteristic improvement in the reproduction FM signal processing circuit 30. This processed reproduced FM signal is converted into an optical signal by an FM→optical signal conversion circuit 31, and then is converted to an optical signal by an optical signal output terminal 3.
2, passes through the optical cable 33, is input from the optical signal input terminal 34, and is transmitted to the slave device 24.

【００１７】子機２４に伝送された光信号は光→ＦＭ信
号変換回路３５によりＦＭ信号に変換された後、記録Ｆ
Ｍ信号処理回路３６にて、ノイズ除去やｆ特改善等の処
理を施こされ、記録アンプ２１にて増幅される。この増
幅されたＦＭ信号はロータリートランス３ｂにて伝送さ
れ、記録ヘッド２ｂに伝送される。ここで、ＦＭ信号は
記録ヘッド２ｂにより磁気記録信号に変換され図示矢印
方向に駆動されているダビングテープ２３に記録される
。The optical signal transmitted to the slave device 24 is converted into an FM signal by an optical to FM signal conversion circuit 35, and then recorded on the recording F.
The M signal processing circuit 36 performs processing such as noise removal and f-characteristic improvement, and the recording amplifier 21 amplifies the signal. This amplified FM signal is transmitted by the rotary transformer 3b and then transmitted to the recording head 2b. Here, the FM signal is converted into a magnetic recording signal by the recording head 2b and recorded on the dubbing tape 23 which is being driven in the direction of the arrow in the figure.

【００１８】また、上記実施例では、映像信号の場合に
ついて説明したが、音声信号、その他の情報を持った信
号であってもよく、上記実施例と同様の効果を奏する。Further, in the above embodiment, the case of a video signal has been explained, but it may be an audio signal or a signal having other information, and the same effects as in the above embodiment can be obtained.

【００１９】[0019]

【発明の効果】以上のように、この発明によれば再生し
たＦＭ信号を光信号に変換して光伝送し、この光伝送さ
れた光信号をＦＭ信号に変換して磁気記録媒体に記録す
るように構成したので、余分な処理回路を通らず、劣化
の少ない、マスターテープに記録された信号により忠実
な信号を記録したダビングテープを作成できる効果があ
る。[Effects of the Invention] As described above, according to the present invention, a reproduced FM signal is converted into an optical signal and optically transmitted, and the optically transmitted optical signal is converted into an FM signal and recorded on a magnetic recording medium. With this configuration, it is possible to create a dubbing tape that does not pass through an extra processing circuit, has less deterioration, and has more faithful signals than those recorded on the master tape.

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

【図１】この発明の一実施例によるダビング時の磁気記
録再生装置の簡略構成図である。FIG. 1 is a simplified configuration diagram of a magnetic recording and reproducing apparatus during dubbing according to an embodiment of the present invention.

【図２】従来装置のダビング時の簡略構成図である。FIG. 2 is a simplified configuration diagram of a conventional device during dubbing.

【符号の説明】[Explanation of symbols]

１　　マスターテープ（磁気記録媒体）２ａ　　再生ヘ
ッド（再生手段） ２ｂ　　記録ヘッド（記録手段） １１　　親機 ２３　　ダビングテープ（磁気記録媒体）２４　　子機 ３０　　再生ＦＭ信号処理回路（改善手段）３１　　Ｆ
Ｍ→光信号変換回路（第１の変換手段）３３　　光ケー
ブル（光伝送手段）1 Master tape (magnetic recording medium) 2a Playback head (playback means) 2b Recording head (recording means) 11 Master device 23 Dubbing tape (magnetic recording medium) 24 Child device 30 Playback FM signal processing circuit (improvement means) 31 F
M→Optical signal conversion circuit (first conversion means) 33 Optical cable (optical transmission means)

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】　　一方の磁気記録媒体に記録されたＦＭ
信号を再生する再生手段、該再生されたＦＭ信号を光信
号に変換する第１の変換手段を備えた親機と、該親機か
ら伝送されてきた光信号をＦＭ信号に変換する第２の変
換手段、該変換されたＦＭ信号を他方の磁気記録媒体に
記録する記録手段を備えた子機と、上記光信号を上記親
機から上記子機へ伝送する光伝送手段を備えた磁気記録
再生装置。Claim 1: FM recorded on one magnetic recording medium
a base unit including a reproduction means for reproducing a signal, a first conversion means for converting the reproduced FM signal into an optical signal, and a second base unit for converting the optical signal transmitted from the base unit into an FM signal. A magnetic recording and reproducing device comprising: a converting means; a slave device comprising a recording means for recording the converted FM signal on the other magnetic recording medium; and an optical transmission means for transmitting the optical signal from the master device to the slave device. Device. 【請求項２】　　親機と子機の少なくとも一方にＦＭ信
号を改善する改善手段を設けた事を特徴とする請求項１
記載の磁気記録再生装置。Claim 2: Claim 1, characterized in that at least one of the base unit and the slave unit is provided with an improvement means for improving the FM signal.
The magnetic recording and reproducing device described above.