JPS59221802A - Magnetic recording and reproducing device - Google Patents

Magnetic recording and reproducing device

Info

Publication number
JPS59221802A
JPS59221802A JP9662983A JP9662983A JPS59221802A JP S59221802 A JPS59221802 A JP S59221802A JP 9662983 A JP9662983 A JP 9662983A JP 9662983 A JP9662983 A JP 9662983A JP S59221802 A JPS59221802 A JP S59221802A
Authority
JP
Japan
Prior art keywords
recording
reproducing
signal
video signal
digital 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.)
Pending
Application number
JP9662983A
Other languages
Japanese (ja)
Inventor
Hiroaki Takeuchi
武内 宏壮
Nobuyoshi Kihara
木原 信義
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 JP9662983A priority Critical patent/JPS59221802A/en
Publication of JPS59221802A publication Critical patent/JPS59221802A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00Signal processing not specific to the method of recording or reproducing; Circuits therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

PURPOSE:To record and reproduce simultaneously a video signal and a digital signal, and to use a device for a multi-purpose by providing a recording and reproducing system of a digital signal, in addition to a recording and reproducing system of a video signal. CONSTITUTION:A modulating means 3 FM-modulates a video signal extracted by a separating means 2, a memory means 6 stores temporarily an extracted digital signal of the means 2, and a modulating means 7 executes a digital modulation of an output of the means 6. Also, recording and reproducing means 5, 9 record the modulated signals of the means 3, 7 in different tracks of a magnetic tape, also reproduce them from the tape, and demodulating means 10, 12 demodulate the reproducing signals of the means 5, 9 to the video signal and the digital signal, respectively. Also, the digital signal of the means 12 is stored temporarily in a memory 13, so that a reproducing video signal and a reproducing digital signal can be obtained from the output side of the means 10 and the output side of the means 13, respectively, at the time of reproducing, and a device can be used for a multi-purpose.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は磁気デープ上にビデオ信号とデジタル信号を記
録再生する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 an apparatus for recording and reproducing video signals and digital signals on a magnetic tape.

従来例の構成とその問題点 近年、磁気テープにビデオ信号を記録再生する装置のう
ち、一般家庭向けの装置として、VH3方式、β方式の
2方式のビデオテープレコーダ〈以下V T Rと略す
)が実用化されている。VH8方式は4g準で2時間の
記録再生が可能であり、β方式はF準で1時間の記録再
生が可能である。
Conventional configuration and its problems In recent years, among devices for recording and reproducing video signals on magnetic tape, two types of video tape recorders (hereinafter abbreviated as VTR), VH3 system and β system, have been used as devices for general households. has been put into practical use. The VH8 system allows 2 hours of recording and playback at 4G standard, and the β system allows 1 hour of recording and playback at F standard.

さらに最近では、これらの標準規格の他に同じカセット
でより長時間の記録再生が可能な機種が実用化されてい
る。たとえば、VH8方式のVTRでは2時間の記録再
生ができる同じカセットに3倍の6時間の記録再生が可
能である。これは、テープ送り速度を2時間機の33 
、4am / Sから約1/3゛の11.1M+1/S
の送り速度にしている訳で、このICめにビデオ信号を
記録するトラック幅が狭くなっている。この長時間の記
録再生が可能になった技術前傾には、ビデAトラックガ
狭くなった分のビデオ信号のS / N低下、隣接トラ
ックからのクロストークの問題への対策仁して、高感度
、低ノイズのビデオヘッドの採用や、それに伴うローノ
イズ化などの回路技術の進歩があげられる。
Furthermore, recently, in addition to these standards, models that are capable of recording and playing back for longer periods of time with the same cassette have been put into practical use. For example, with a VH8 system VTR, the same cassette that can record and play back two hours can record and play back three times as long, six hours. This increases the tape feed speed to 33 on a 2 hour machine.
, 11.1M+1/S, about 1/3゛ from 4am/S
Since the feed speed is set to , the track width for recording video signals on this IC is narrower. The advancement in technology that has made long-term recording and playback possible is due to the reduction in S/N of the video signal due to the narrower video A track, as well as measures to address the problem of crosstalk from adjacent tracks, and improvements in high sensitivity. , the adoption of low-noise video heads and accompanying advances in circuit technology such as lower noise.

また、長時間の録画を可能としている記録再生方式とし
て、たとえばVH8方式では、従来から2ヘッド方式、
4ヘッド方式がある。2ヘッド方式は狭トラツク幅の2
.6時間共用の2ヘツドを用いる方式であり、4ヘッド
方式は2時間縁画の用の2ヘツドと6時間縁画専用の2
ヘツドの金目4つのヘッドを、録画時間に応じて使い分
ける方式である。たとえば、前者の2ヘッド方式のテー
プ上での記録パターンの内、ビデオ信号記録部分のみを
簡単に示すと第1図、第2図のようになる。
In addition, as a recording and playback system that enables long-time recording, for example, the VH8 system has traditionally been a two-head system,
There is a 4-head system. The 2-head system has 2 narrow track widths.
.. This is a system that uses 2 heads that are shared for 6 hours, and the 4-head system has 2 heads for 2-hour edges and 2 heads for 6-hour edges.
This system uses four different heads depending on the recording time. For example, of the recording pattern on the tape of the former two-head system, only the video signal recording portion is briefly shown in FIGS. 1 and 2.

第1図は6時間縁画モードのビデオ信号記録パターン図
、第2図は2時間縁画モードのビデオ信号記録パターン
図である。第1図において、トラックピッチは19.3
μ而、トラック幅番誹19.3.μmであるが、第2図
では、トラックピッチはVH8方式VTRの規格である
58μ汎であり、トラック幅は約半分の29μmとなっ
ている。従って、テープ使用効率からづると半分となり
無上が多くな一ンている。一方、文字放送やPCM(P
ulse  CodeModulation )音声等
デジタル信号を同時に記録再生を行なうことの可能な磁
気記録再生装置が望まれている。
FIG. 1 is a video signal recording pattern diagram for the 6-hour edge mode, and FIG. 2 is a video signal recording pattern diagram for the 2-hour edge mode. In Figure 1, the track pitch is 19.3
μ, track width number 19.3. However, in FIG. 2, the track pitch is 58 μm, which is the standard for VH8 VTRs, and the track width is about half, 29 μm. Therefore, in terms of tape usage efficiency, it is halved, which means that there are many cases where there is no improvement. On the other hand, teletext and PCM (P
(ulse Code Modulation) A magnetic recording and reproducing apparatus that can simultaneously record and reproduce digital signals such as audio is desired.

発明の目的 本発明は第2図に示したビデオ信号間にPCM録音や文
字放送等のデジタル信号を記録することにより、多目的
に使用可能な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 An object of the present invention is to provide a magnetic recording and reproducing apparatus that can be used for multiple purposes by recording digital signals such as PCM recording and teletext between the video signals shown in FIG.

発明の構成 本発明の磁気記録再生装置によると、入力テレビジョン
信号をビデオ信号とデジタル信号に分離する分離手段と
、この分離手段で抽出されたビデオ信号をFM変調する
第1の変調手段と、前記分離手段で抽出されたデジタル
信号を一時記憶する第1のメモリ手段と、第1のメモリ
手段の出力のデジタル信号をデジタル変調する第2の変
調手段と、第1、第2の変調手段によって変調された信
号を交互に磁気テープ上の異なるトラックに記録ならび
にこの磁気テープから再生する記録再生手段と、この記
録再生手段によって再生された信号をそれぞれビデオ信
号とデジタル信号に復調する第1、第2の復調手段と、
第2の復調手段の出力のデジタル信号を一時記憶する第
2のメモリ手段とを設け、再生時に第1の復調手段の出
力側から再生ビデオ信号を得、第2のメモリ手段の出力
側から再生デジタル信号を得るよう構成したことを特徴
とする。
Structure of the Invention According to the magnetic recording and reproducing apparatus of the present invention, a separating means separates an input television signal into a video signal and a digital signal; a first modulating means performs FM modulation on the video signal extracted by the separating means; a first memory means for temporarily storing the digital signal extracted by the separation means; a second modulation means for digitally modulating the digital signal output from the first memory means; and first and second modulation means. A recording/reproducing means for alternately recording and reproducing modulated signals on different tracks on a magnetic tape and reproducing them from the magnetic tape; 2 demodulating means;
and second memory means for temporarily storing the digital signal output from the second demodulating means, the reproduced video signal is obtained from the output side of the first demodulating means during reproduction, and the reproduced video signal is reproduced from the output side of the second memory means. It is characterized by being configured to obtain a digital signal.

実施例の説明 第3図は、本発明の一実施例における磁気記録再生装置
の記録再生回路のブロック図を示すものである。1はT
V信号入力端子、2はビデオ信号と文字信号を分離抽出
する文字信号抽出回路、3はビデオ信号をFM変調する
ビデオ信号記録回路、4は第1の記録再生切替えスイッ
チ、5はビデオ信号記録再生ヘッドでヘッドH1とH2
からなる。
DESCRIPTION OF EMBODIMENTS FIG. 3 shows a block diagram of a recording/reproducing circuit of a magnetic recording/reproducing apparatus according to an embodiment of the present invention. 1 is T
V signal input terminal, 2 is a character signal extraction circuit that separates and extracts a video signal and character signal, 3 is a video signal recording circuit that modulates the video signal with FM, 4 is a first recording/playback changeover switch, 5 is a video signal recording/playback Head H1 and H2
Consisting of

6は第1のバッフ7メモリ、7はデジタル(g号をデジ
タル変調するデジタル信号記録回路、8は第2の記録再
生切替えスイッチ、9はデジタル信号記録再生ヘッドで
ヘッドH3とト14とから成る。
6 is a first buffer 7 memory, 7 is a digital signal recording circuit that digitally modulates the g signal, 8 is a second recording/playback changeover switch, and 9 is a digital signal recording/playback head consisting of a head H3 and a head 14. .

10はビデオ信号再生回路、11はビデオ信号出力端子
、12はデジタル信号再生回路、13は第2のバッファ
メモリ、14は映像信号化回路、15は文字情報映像信
号出力端子である。
10 is a video signal reproducing circuit, 11 is a video signal output terminal, 12 is a digital signal reproducing circuit, 13 is a second buffer memory, 14 is a video signal converting circuit, and 15 is a text information video signal output terminal.

TV信号入力端子1より入力されたT V信号は文字信
号抽出回路2へ入力され、文字信号抽出回路2では映像
信号と文字信号に分離した後、映像信号をビデオ信号に
変換し、文字信号をデジタル信号化して出力する。文字
信号抽出回路2より出力されたビデオ信号をビデオ信号
記録回路3に入力し、例えばNTSC方式のビデオ信号
であれば、輝度信号と色信号に分離し、輝度信号は低搬
送波FM信号に変換し、色信号も同じく低域変換色信号
に変換し、両者を重ね合せた信号を第1の記録再生切替
えスイッチに出力する。記録時においては、第1の記録
再生切替えスイッチはビデオ信号記録回路3の方へ接続
されている。ビデオ信号記録再生ヘッド1−11、H2
はビデオ信号記録回路3の出力信号によりドライブされ
、テープ上にビデオ信号が記録される。
The TV signal input from the TV signal input terminal 1 is input to the character signal extraction circuit 2, which separates it into a video signal and a character signal, converts the video signal into a video signal, and converts the character signal into a character signal. Convert to digital signal and output. The video signal output from the character signal extraction circuit 2 is input to the video signal recording circuit 3. For example, if it is an NTSC video signal, it is separated into a luminance signal and a color signal, and the luminance signal is converted into a low carrier FM signal. , the color signal is also converted into a low frequency converted color signal, and a signal obtained by superimposing both is output to the first recording/reproduction changeover switch. During recording, the first recording/reproducing changeover switch is connected to the video signal recording circuit 3. Video signal recording/playback head 1-11, H2
is driven by the output signal of the video signal recording circuit 3, and the video signal is recorded on the tape.

また、文字信号抽出回路2より出力された文字信号を第
1のバッフ7メモリ6へ入力する。一画面分の文字信号
が第1のバッフ7メモリ6へ入力されると、一画面分の
文字信号はデジタル信号記録回路7へ出力される。デジ
タル信号記録回路7では、第4図に示す様にヘッダ部と
データ部から構成される文字信号をn個ごとのブロック
に分割し、各ブロックに同期信号と訂正符号を付加して
フレーム化を行ない、たとえば、M F M変調を加え
た後、第2の記録再生切替えスイッチ8へ出力される。
Further, the character signal outputted from the character signal extraction circuit 2 is inputted to the first buffer 7 memory 6. When the character signals for one screen are input to the first buffer 7 memory 6, the character signals for one screen are output to the digital signal recording circuit 7. In the digital signal recording circuit 7, the character signal consisting of a header part and a data part is divided into every n blocks as shown in FIG. 4, and a synchronization signal and a correction code are added to each block to form a frame. After applying, for example, MFM modulation, the signal is output to the second recording/reproduction changeover switch 8.

デジタル信号記録再生ヘッドH3、H4はデジタル信号
記録回路7より出力された文字信号をテープ上に記録す
る。
The digital signal recording and reproducing heads H3 and H4 record the character signal output from the digital signal recording circuit 7 onto the tape.

第5図はビデオ信号記録再生ヘッド5のヘッドH1、H
2、デジタル信号記録再生ヘッド9のヘッドH3、H4
のロケーションの一例を示し、第6図はテープ上の記録
パターンを示す。第5図において、ビデオ信号を記録再
生覆る2個のヘッドH1、H2は、互いに1800の対
角線上に位置し、同様にデジタル信号を記録再生Jる2
個のヘッドH3、H4も1800の対角線上に位置し、
l−11、H2,1」3、H4はそれぞれ異なったトラ
ックをトレースするよう取り付は高さが調整されている
FIG. 5 shows heads H1 and H of the video signal recording/reproducing head 5.
2. Heads H3 and H4 of the digital signal recording/reproducing head 9
FIG. 6 shows a recording pattern on the tape. In FIG. 5, two heads H1 and H2 for recording and reproducing video signals are located on a diagonal line of 1800 mm from each other, and similarly recording and reproducing digital signals.
The heads H3 and H4 are also located on the diagonal line of 1800,
The mounting heights of 1-11, H2, 1''3, and H4 are adjusted so that they trace different tracks, respectively.

従って、第6図に示す様に、たとえばヘッド1」1がビ
デオ信号を#1トラックに記録する際に同時にヘッドH
3でデジタル信号を#1′1〜ラックに記録することが
できる。ここで、拌1と#1′のトラックは近接するが
、従来技術の傾斜アジマス記録方式をもちいれば、ガー
トバンドが無くても、トラックズレが生じた際の隣接ト
ラックの影響を低減できる。ヘッドH2とH4の関係も
ヘッドH1とH3同様であり、第6図に示づ記録パター
ンが形成される。
Therefore, as shown in FIG. 6, for example, when head 1"1 records a video signal on track #1, head H
3, digital signals can be recorded on racks #1'1 to #1'1. Here, the tracks #1 and #1' are close to each other, but if the prior art inclined azimuth recording method is used, the influence of adjacent tracks when track deviation occurs can be reduced even without a guard band. The relationship between heads H2 and H4 is the same as that between heads H1 and H3, and the recording pattern shown in FIG. 6 is formed.

再生時には、第1の記録再生切替えスイッチ4および第
2の記録再生切替えスイッチ8は、それぞれ、ビデオ信
g H主回路10およびデジタル信号再生回路12に接
続される。ビデオ信号記録再生ヘッド5のヘットト+1
、H2により再生されたビデオ信号は、第1の記録再生
切替えスイッチ4を通って、ビデA信号再生回路10へ
入力される。ビデオ信号再生回路10で【Jl、再生信
号をFM復調し、輝度信号、色16号を0成してビデオ
信号出力端子11より出力する。一方デジタル信号記録
再生ヘッド9のヘッド1−13.1−14により再生さ
れた文字信号は、第2の記録再生切替えスイッチ8を通
ってデジタル信号再生回路12へ入力される。デジタル
信号再生回路12ではMFM復調を行なった後、同ll
I′]信シ]を検出してフレームごとに訂正符号を用い
てエラー訂正を行なった後、文字信号を分離してバッフ
ァメモリ13に出力Jる。バッファメモリ13では一画
面分の文字信号で入力されると、映像信号化回路14へ
出力覆る。映像信号回路14ではデジタル信号である文
字信号を解読し映像信号として文字情報映J&信号出力
端子15より出力する。
During reproduction, the first recording/reproduction changeover switch 4 and the second recording/reproduction changeover switch 8 are connected to the video signal gH main circuit 10 and the digital signal reproduction circuit 12, respectively. Video signal recording/playback head 5 head +1
, H2 is input to the video A signal reproducing circuit 10 through the first recording/reproducing changeover switch 4. The video signal reproducing circuit 10 performs FM demodulation on the reproduced signal, converts the luminance signal and color No. 16 to 0, and outputs the resulting signal from the video signal output terminal 11. On the other hand, the character signal reproduced by the heads 1-13.1-14 of the digital signal recording/reproducing head 9 is inputted to the digital signal reproducing circuit 12 through the second recording/reproducing changeover switch 8. After performing MFM demodulation in the digital signal reproducing circuit 12,
After detecting the signal I'] and performing error correction using a correction code for each frame, character signals are separated and output to the buffer memory 13. When the buffer memory 13 receives character signals for one screen, it is output to the video signal converting circuit 14. The video signal circuit 14 decodes the character signal, which is a digital signal, and outputs it as a video signal from the character information video J& signal output terminal 15.

テレビジョン受像椴への出力を、ビデオ信号と文字情報
映像信号とを切替えることにより、両者を選択して視聴
することが可能となる。
By switching the output to the television receiver between the video signal and the text information video signal, it becomes possible to select and view both.

発明の詳細 な説明のように本発明の磁気記録装置によると、ビデオ
信号の記録再生系とは別にプレビジコン信号中のデジタ
ル信号の記録再4−系を設(プたlこめ、ビデオ信号と
デジタル信号を同時に記録再生でき、従来のものより多
目的に使用できる点でその実用的効果は大きい。
As described in the detailed description of the invention, according to the magnetic recording device of the present invention, a recording and reproducing system for digital signals in previsicon signals is provided separately from a recording and reproducing system for video signals. Its practical effects are great in that it can record and reproduce signals simultaneously and can be used for more purposes than conventional ones.

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

第1図と第2図は従来の磁気記録装置としてのVH8方
式の6時間モードでの記録パターン図と2時間縁画モー
ドでの記録パターン図、第3図は本発明の一実施例にお
(プる磁気記録再生装置のブロック図、第4図は文字情
報のフレーム構成図、第5図は第3図のヘッドの位置の
説明図、第6図は第3図における記録パターン図である
。 1・・・TV信号入力端子、2・・・文字信号抽出回路
〔分離手段〕、3・・・ビデオ信号記録回路(第1の変
調手段)、5・・・ビデオ信号記録再生ヘッド、6・・
・第1のバッファメモリ、7・・・デジタル信号記録回
路、9・・・デジタル信号記録再生ヘッド、10・・・
ビデA伯8再生回路〔第1の復調手段〕、11・・・ビ
デオ信号出力9;((子、12・・・デジタル信号再生
回路〔第2の1す副手段〕、13・・・第2のバッファ
メモリ、15・・・文字情報映像信号出力端子 代1.14人   森  本  挫  弘第1図
Figures 1 and 2 are recording pattern diagrams in the 6-hour mode and 2-hour edge mode of the VH8 system as a conventional magnetic recording device, and Figure 3 shows an example of the present invention. (Figure 4 is a block diagram of a magnetic recording and reproducing device. Figure 4 is a frame configuration diagram of character information. Figure 5 is an explanatory diagram of the position of the head in Figure 3. Figure 6 is a recording pattern diagram in Figure 3.) 1... TV signal input terminal, 2... Character signal extraction circuit [separation means], 3... Video signal recording circuit (first modulation means), 5... Video signal recording/reproducing head, 6・・・
- first buffer memory, 7... digital signal recording circuit, 9... digital signal recording/reproducing head, 10...
Video signal regeneration circuit [first demodulation means], 11... video signal output 9; Buffer memory of 2, 15...Text information video signal output terminal cost 1.14 people Hiroshi Morimoto Figure 1

Claims (1)

【特許請求の範囲】[Claims] 1、入力テレビジョン信号をビデオ信号とデジタル信号
に分前する分離手段と、この分離手段で抽出されたビデ
オ信号をFM変調する第1の変調手段と、前記分離手段
で抽出されたデジタル信号を一時記憶する第1のメモリ
手段と、第1のメモリ手段の出力のデジタル信号をデジ
タル変調する第2の変調手段と、第1、第2の疫調手段
によって変調された信号を交互に磁気テープ上の異なる
トラックに記録ならびにこの磁気テープから再生する記
録再生手段と、この記録再生手段によって再生された信
号をそれぞれビデオ信号とデジタル信号に復調する第1
、第2の復調手段と、第2の復調手段の出力のデジタル
信号を一時記憶する第2のメモリ手段とを設け、再生時
に第1のWi調手段の出力側から再生ビデオ信号を得、
第2のメモリ手段の出力側から再生デジタル信号を得る
よう開成した磁気記録再生装置。
1. Separation means for dividing an input television signal into a video signal and a digital signal; a first modulation means for FM modulating the video signal extracted by the separation means; and a first modulation means for FM modulating the video signal extracted by the separation means; A first memory means for temporarily storing a digital signal, a second modulation means for digitally modulating a digital signal output from the first memory means, and a magnetic tape that alternately modulates the signals modulated by the first and second modulation means. a recording/reproducing means for recording on different tracks on the magnetic tape and reproducing from this magnetic tape; and a first recording/reproducing means for demodulating the signals reproduced by the recording/reproducing means into video signals and digital signals, respectively.
, comprising a second demodulating means and a second memory means for temporarily storing the digital signal output from the second demodulating means, and obtaining a reproduced video signal from the output side of the first Wi modulating means during reproduction;
A magnetic recording/reproducing device developed to obtain a reproduced digital signal from the output side of a second memory means.
JP9662983A 1983-05-30 1983-05-30 Magnetic recording and reproducing device Pending JPS59221802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9662983A JPS59221802A (en) 1983-05-30 1983-05-30 Magnetic recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9662983A JPS59221802A (en) 1983-05-30 1983-05-30 Magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS59221802A true JPS59221802A (en) 1984-12-13

Family

ID=14170123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9662983A Pending JPS59221802A (en) 1983-05-30 1983-05-30 Magnetic recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS59221802A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6257970U (en) * 1985-09-28 1987-04-10
US5335125A (en) * 1991-11-01 1994-08-02 Matsushita Electric Industrial Co., Ltd. Video signal magnetic recording and reproducing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6257970U (en) * 1985-09-28 1987-04-10
US5335125A (en) * 1991-11-01 1994-08-02 Matsushita Electric Industrial Co., Ltd. Video signal magnetic recording and reproducing apparatus

Similar Documents

Publication Publication Date Title
US4303950A (en) Helical scan video tape recorder for recording video and audio signals on contiguous tracks
JPS6362948B2 (en)
DE3266780D1 (en) Videorecorder with improved sound signal recording
EP0312362B1 (en) Magnetic recording and reproducing apparatus
JP2524033B2 (en) Video signal magnetic recording / reproducing device
EP0246883A3 (en) Apparatus for reproducing digital data
JPS59221802A (en) Magnetic recording and reproducing device
EP0169910B1 (en) Rotary head type magnetic image recorder/reproducer
JPH0263296A (en) Recording and reproducing method for video signal and digital video tape recorder
JP2569469B2 (en) Magnetic recording / reproducing device
EP0418767A2 (en) Magnetic recording and reproducing apparatus for wide-band signals
JP3114772B2 (en) Video tape recorder
JPS6094590A (en) Magnetic recording and reproducing device
JPS5827485A (en) Magnetic recorder and reproducer
KR100210547B1 (en) Vtr
KR100240555B1 (en) Video tape recorder
JPH0695751B2 (en) Video and audio signal recording device
JP2939954B2 (en) Video / audio signal magnetic recording device and video / audio signal magnetic recording / reproducing device
JP2911145B2 (en) Video tape recorder
JPS6231294A (en) Video signal recording and reproducing device
JPH0160986B2 (en)
JPS61121673A (en) Magnetic recording/reproducing method
JPH0476555B2 (en)
JPS6171784A (en) Magnetic recording and reproducing device
JPH05122653A (en) Magnetic recording and reproducing device of color video signal and sound signal