JPH06500438A - Video recorder for television signals with additional signals - Google Patents

Video recorder for television signals with additional signals

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Publication number
JPH06500438A
JPH06500438A JP3513564A JP51356491A JPH06500438A JP H06500438 A JPH06500438 A JP H06500438A JP 3513564 A JP3513564 A JP 3513564A JP 51356491 A JP51356491 A JP 51356491A JP H06500438 A JPH06500438 A JP H06500438A
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Prior art keywords
recorded
frequency
signal
magnetic head
carrier wave
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JP3513564A
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Japanese (ja)
Inventor
クルート，ハンス―ユルゲン
ヴィッパーマン，ホルスト
Original Assignee
ドイチエ　トムソン―ブラント　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング
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Publication of JPH06500438A publication Critical patent/JPH06500438A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/797—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • H04N5/78213—Television signal recording using magnetic recording on tape involving recording in different depths of the magnetic tape
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
    • H04N9/832—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal using an increased bandwidth for the luminance or the chrominance signal

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Television Signal Processing For Recording (AREA)
  • Color Television Systems (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。 (57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 付加信号を有するテレビジョン信号のためのビデオレコーダ 本発明は、請求項１の上位概念に記載のビデオレコーダに関する。[Detailed description of the invention] Video recorder for television signals with additional signals The invention relates to a video recorder according to the preamble of claim 1.

１６．９のワイド画像フォーマットを４：３のフォーマットを有する既存のテレ ビジョン規格（例えばＰＡＬ、ＳＥＣＡＭ、ＮＴＳＣ）　へ両立的に導入するた めに、いわゆる“レターボックス“方式が用いられる。16.9 wide image format to existing TVs with 4:3 format. For compatible implementation with vision standards (e.g. PAL, SECAM, NTSC) For this purpose, a so-called "letterbox" method is used.

１６：９画像を４＝３受像機で表示させるには４３１本の走査線しか表示されず 、他方、残りの１４４本の有効な走査線は、それぞれ７２本の走査線を有する黒 いストライブとして上方の画像周縁部および下方の画像周縁部に現れる。To display a 16:9 image on a 4=3 receiver, only 431 scanning lines are displayed. , while the remaining 144 valid scan lines are black with 72 scan lines each. Appears as thin stripes at the upper and lower image edges.

高品質の１６：９画像を表示させるために、１４４本の走査線中に付加信号を伝 送することが知られている。４：３受像機においてこれらの信号が目立たないよ うにする目的で、これらの付加信号に対して黒レベルと同期パルスの半分のレベ ルとの間の領域が、いわゆる濃い黒の領域が利用される。To display high quality 16:9 images, additional signals are transmitted during 144 scan lines. known to send. These signals are less noticeable on a 4:3 receiver. In order to A so-called deep black area is used for the area between the two lines.

付加信号を有するこの形式の信号を通常のＶＨＳビデオレコーダで記録すると、 付加信号は失われてしまう、それというのはこのレコーダは、濃い黒の領域中の この種の信号の記録には適していないからである。When this type of signal with additional signals is recorded on a regular VHS video recorder, The additional signal will be lost, since this recorder will This is because it is not suitable for recording this type of signal.

しかし他方、高品位テレビジョンに相応する高品質の１６：９画像だけを再生す るためには、この付加信号が必要となる。However, on the other hand, only high-quality 16:9 images corresponding to high-definition television are played back. This additional signal is required in order to

したがって本発明の課題は、通常のビデオレコーダにおいて、４：３再生用の通 常のテレビジョン信号の記録に加えて付加的に、高い信号品買を有する１６：９ 再生用の付加信号の記録も可能にすることである。Therefore, the problem of the present invention is to provide a standard video recorder for 4:3 playback. In addition to the usual recording of television signals, 16:9 with high signal quality It is also possible to record additional signals for reproduction.

この課題は、請求項１に記載された本発明により解決される。請求項２以下には 本発明の有利な実施形態が示されている。This problem is solved by the invention as defined in claim 1. Claim 2 and below An advantageous embodiment of the invention is shown.

本発明は以下の考察に基づく。比較的大きいギャップ幅のヘッドを用いて下方に 位置する磁気装置へ記録することは、５−ＶＨ３磁気テープを用いての５−ＶＨ ＳレコーダまたはＶＨＳレコーダの場合、約１００ｋＨｚ〜４．７ＭＨｚの比較 的僅かな帯域幅を以しか可能でない。しかしこの帯域幅は、１６：９画像再生用 の付加信号に対しては十分である。有利には付加信号の記録は、付加信号により 直角変調された搬送波の形式で、例えばＰＡＬ色搬送波周波数を有する色搬送波 の形式で行われる。一方では本来の４：３信号を、他方では付加信号を、磁気テ ープのそれぞれ別の深さのところに記録することにより、これらの信号間におけ る問題のない分離が達成される。したがって再生の際、ＦＢＡＳ信号は付加信号 から分離されるので、この付加信号によっても４：３フオーマツトを有するテレ ビジョン受像機においていかなる同期化の問題も生じ得ない、１６：９受像管を 有するテレビジョン受像機またはモニタのために、上方の磁気層からの４：３信 号と、その下方に位置するいっそう深い磁気層からの付加信号とが組み合わせら れる。The present invention is based on the following considerations. downward using a head with a relatively large gap width. Recording to a magnetic device located on a 5-VH using a 5-VH3 magnetic tape Comparison of approximately 100kHz to 4.7MHz for S recorder or VHS recorder Only limited bandwidth is possible. However, this bandwidth is limited to 16:9 image playback. This is sufficient for additional signals. Advantageously, the recording of the additional signal is performed by the additional signal. a color carrier in the form of a quadrature modulated carrier, e.g. with a PAL color carrier frequency; It is done in the form of The original 4:3 signal on one side and the additional signal on the other side are By recording at different depths of the Problem-free separation is achieved. Therefore, during playback, the FBAS signal is an additional signal. This additional signal also allows the TV with 4:3 format to be 16:9 picture tube without any synchronization problem in the vision receiver For television receivers or monitors with signal and an additional signal from the deeper magnetic layer below. It will be done.

次に、記録および再生のための実施例における図面に基づき本発明の詳細な説明 する。Next, a detailed description of the invention based on the drawings in an embodiment for recording and playback do.

第１図は記録のためのブロック回路図であり、第２図は２つの磁気層への記録の 原理を示す図であり、第３図は再生のためのブロック回路図である。Figure 1 is a block circuit diagram for recording, and Figure 2 is a block diagram for recording on two magnetic layers. FIG. 3 is a diagram showing the principle, and FIG. 3 is a block circuit diagram for reproduction.

以下の説明において用いられる符号は次の意味および値を有する。The symbols used in the following description have the following meanings and values.

ｆＨ＝走査線周波数　１５．６２５ｋＨｚｆｌ　＝変調されたＰＡＬ色搬送波の 周波数４．４３３６１８７５ＭＨｚ ｆ２　＝記録されるＰＡＬ色搬送波の周波数ｆ３　＝５５０＊ｆＨ＝８．５９３ ７５０ＭＨｚの混合搬送波の周波数 ｆ４　＝４．１６０１３１２５ＭＨｚのＺ変調され記録される搬送波の周波数 Ｆ　＝変調されたＰＡＬ色搬送波周波数ｆＩＦｍ　＝ｆ２である、周波数が低減 されて記録される色搬送波 Ｍ　＝ｆ３である色搬送波 Ｔｌ　＝Ｌ用の周波数変調された音声搬送波１．４ＭＨｚ Ｔ２　＝Ｒ用の周波数変調された音声搬送波１．８ＭＨｚ Ｔ１ｍ＝０．４ＭＨｚである、周波数が低減されて記録される音声搬送波ＴＩ ７２ｍ＝０．８ＭＨｚである、周波数が変換されて記録された音声搬送波Ｔ２ Ｚ　＝高品位テレビジョン再生用付加信号第１図には、以下で順番に説明する種 々異なる作動モードに対する記録用回路が示されている。fH = scan line frequency 15.625kHz fl = modulated PAL color carrier wave Frequency 4.43361875MHz f2 = Frequency of recorded PAL color carrier wave f3 = 550*fH = 8.593 750MHz mixed carrier frequency f4 = 4.16013125MHz Z-modulated and recorded carrier wave frequency F = Modulated PAL color carrier frequency fIFm = f2, the frequency is reduced Color carrier wave recorded by Color carrier wave where M = f3 Tl = Frequency modulated audio carrier for L 1.4MHz T2 = Frequency modulated audio carrier for R 1.8MHz Audio carrier wave TI recorded with reduced frequency, T1m = 0.4 MHz 72m=0.8MHz, frequency-converted and recorded audio carrier wave T2 Z = Additional signal for high-definition television playback Figure 1 shows the types explained below in order. Recording circuits are shown for different modes of operation.

付加信号の記録をともなう第１作動モード図示されているすべてのスイッチは実 線で示された位置にある。端子１におけるＦＢＡＳ信号は、くし形フィルタ２に より信号Ｙ＋Ｚと変調された色搬送波Ｆとに分離される。Ｙ＋Ｚは、６　Ｍ　Ｈ ｚの遮断周波数を有する低域通過フィルタ３を介して帰線消去段４へ達する。こ の帰線消去段は、タイミングのとられた帰線消去および走査によりこの信号を端 子５におけるＺ成分のない純然たる輝度信号ＹとＹ成分のない付加信号Ｚとに分 離する。Ｙは端子５においてＺなしで４＝３の再生に用いることができる。さら にＹはスイッチ６を介してＦＭ変調器７に到達し、このＦＭ変調器は出力側にお いて、Ｙで周波数変調された５−ＶＨ３−システムによる画像搬送波を発生させ る。この画像搬送波はスイッチ５１を介して記録増幅器８へ到達し、ヘッドＫｌ により磁気テープＴの上方の磁気層ＳＬ（第２図）に記録される。1st operating mode with additional signal recording All switches shown are It is located at the position indicated by the line. The FBAS signal at terminal 1 is passed to comb filter 2. The signal is separated into a signal Y+Z and a modulated color carrier F. Y+Z is 6MH A blanking stage 4 is reached via a low-pass filter 3 with a cut-off frequency of z. child The blanking stage terminates this signal by timed blanking and scanning. A pure luminance signal Y without a Z component and an additional signal Z without a Y component in the child 5 are separated. Let go. Y can be used for 4=3 reproduction without Z at terminal 5. Sara Y reaches the FM modulator 7 via the switch 6, and this FM modulator is connected to the output side. to generate an image carrier wave by the 5-VH3-system which is frequency modulated at Y. Ru. This image carrier wave reaches the recording amplifier 8 via the switch 51, and the head Kl The information is recorded on the upper magnetic layer SL (FIG. 2) of the magnetic tape T.

色搬送波Ｆは４．４３土１．２ＭＨｚの通過帯域を有する帯域通過フィルタ９を 介して変換器１０へ到達し、この変換器は色搬送波の周波数をｆｌからｆ２へ変 換する。このようにして周波数の低減された色搬送波Ｆｍ−これはカラーアンダ ー搬送波とも称される−はやはり増幅器８へ到達し、画像搬送波との周波数分割 多重形式でＫｌにより磁気テープＴへ記録される。The color carrier wave F is passed through a bandpass filter 9 having a passband of 4.43MHz and 1.2MHz. to a converter 10 which changes the frequency of the color carrier from fl to f2. exchange. In this way the frequency of the color carrier Fm is reduced - this is the color under – also called carrier wave – also reaches the amplifier 8 and is frequency-divided with the image carrier wave. It is recorded on the magnetic tape T by Kl in multiplex format.

画像始端部と画像終端部におけるいわゆるブラックバー中の２＊７２本の走査線 で伝送される１６：９再生のための付加信号Ｚは、帰線消去段４から振幅圧伸器 ５５を介して単側波帯振幅変調器１０へ到達する。2*72 scanning lines in the so-called black bar at the beginning and end of the image The additional signal Z for 16:9 reproduction transmitted in 55 to the single sideband amplitude modulator 10.

圧伸器５５は再生時のＳＮ比を改善する目的で、約０゜１５Ｖｓ　ｓに振幅の制 限された付加信号Ｚを０．７ｖＳＳの振幅へ高め、再生時に元の値へ低減する役 割を有する。変調器１０において、水晶発振器１１にて発生されるＰＡＬ搬送波 が付加信号Ｚで直角変調により変調される。Ｚで変調されたこの搬送波ＴＺは周 波数変換器１２へ到達し、さらにこの周波数変換器へは周波数ｆ３を有する混合 搬送波Ｍが供給される。Ｍは、同期パルス分離段１３の出力側における走査線同 期パルスから変換器１４により形成される。変換器１２の出力側における搬送波 ＴＺは、ＩＭＨｚの遮断周波数を有する高域通過フィルタ５２、スイッチ１５、 ならびに増幅器１６を介してヘッドに２へ到達し、このヘッドはＴＺを磁気テー プＴの下方の磁気層＜Ｓ層）Ｓ２（第２図）へ記録する。ヘッドに２はヘッドに １よりも大きい約０．４μｍのギャップ幅を有する。The compandor 55 controls the amplitude to approximately 0°15Vs in order to improve the S/N ratio during playback. The function is to increase the limited additional signal Z to an amplitude of 0.7vSS and reduce it to the original value during playback. Has a discount. In the modulator 10, the PAL carrier wave generated by the crystal oscillator 11 is modulated with the additional signal Z by quadrature modulation. This carrier wave TZ modulated by Z has a frequency of The wave number converter 12 is reached, and further to this frequency converter is a mixed signal having a frequency f3. A carrier wave M is supplied. M is the scanning line synchronization at the output side of the synchronization pulse separation stage 13; is formed by the converter 14 from the phase pulses. Carrier wave at the output of converter 12 TZ includes a high-pass filter 52 having a cutoff frequency of IMHz, a switch 15, and the amplifier 16 to the head 2, which connects the TZ to the magnetic tape. Recording is performed on the lower magnetic layer S2 (FIG. 2) of the magnetic layer S2 (FIG. 2). 2 is in the head The gap width is approximately 0.4 μm, which is greater than 1 μm.

ＦＭ変調器１７において、２つのステレオ音声信号Ｌ％Ｒで２つの搬送波Ｔ、Ｔ ２が変調される。これらの搬送波は変換器１９において、０．４ＭＨｚおよび０ ．８ＭＨｚの周波数を有する搬送波７１ｍ、７２ｍへ変換され、これらは切換ス イッチ５４および増幅器１６を介してやはりヘッドに２へ到達する。これにより Ｔｉｎと７２ｍは、周波数分割多重形式でＴＺの周波数スペクトルの下方にに２ によって記録される。In the FM modulator 17, two carrier waves T and T are used for two stereo audio signals L%R. 2 is modulated. These carrier waves are transmitted in converter 19 at 0.4 MHz and 0 ．． It is converted into carrier waves 71m and 72m with a frequency of 8MHz, and these are switched to It also reaches the head 2 via switch 54 and amplifier 16. This results in Tin and 72m are located below the TZ frequency spectrum in frequency division multiplexing format. recorded by.

付加信号の記録をともなう第２の作動モード輝度信号Ｙと色搬送波Ｆは余計な処 凰されずにそのまま記録される。スイッチ５３は破線の位置にあり、したがって ＴＺはもはや帯域幅に関して制限されず、すべての帯域幅でに２により記録され る。スイッチ５１．５４．５６は破線の位置にある。このときＴ１、Ｔ２はに２ によって記録されるのではなく、周波数変換なしで増幅器８へ到達し、ヘッドに １により記録される。スイッチ５１が開かれていることより、ノツチフィルタ５ ０が有効になり、このフィルタは、変調された画像搬送波において１．４ＭＨｚ と１．８ＭＨｚの音声搬送波の周波数帯域を抑圧する。A second operating mode with recording of additional signals, the luminance signal Y and the color carrier F are redundant. It is recorded as it is without being edited. Switch 53 is in the dashed position and therefore TZ is no longer limited in terms of bandwidth and is recorded by 2 at all bandwidths. Ru. Switches 51, 54, 56 are in the dashed position. At this time, T1 and T2 are 2 instead of being recorded by the Recorded by 1. Since the switch 51 is open, the notch filter 5 0 is enabled and this filter is used at 1.4MHz on the modulated image carrier. and suppresses the frequency band of the 1.8 MHz audio carrier wave.

付加信号のない第３の作動モード スイッチ６は破線の位置にある。低域通過フィルタ３の出力側にはＺのない輝度 信号Ｙしか発生せず、既述のようにしてに１により記録される。そして帰線消去 段４はもはや不要である。Ｆの記録もやはりそのもまである。音声搬送波Ｔ１、 Ｔ２は、既述のようにしてヘッドに２により記録される。これはハイファイ音声 を有する通常のＶＨ３記録に該当する。Third operating mode without additional signal Switch 6 is in the position shown by the dashed line. The output side of low-pass filter 3 has a luminance without Z. Only signal Y is generated and recorded by 1 as described above. and blanking Stage 4 is no longer needed. F's record is still there as well. audio carrier wave T1, T2 is recorded by 2 on the head as described above. this is hifi audio This corresponds to a normal VH3 record with .

第２図には、それぞれ異なる磁気層における記録の基本構成が示されている。ヘ ッドＫｌは小さなギャップ幅を有しており、磁気テープＴの上方の磁気層Ｓ１へ の記録しか行なわない、ヘッドに２はそれよりも大きなギャップ幅を有しており 、これにより下方の磁気層Ｓ２への記録も行なわせる。つまり方向２０で送られ る磁気テープＴは、まず最初にに２のところを通過し、次にに１のところを通過 する。Ｋｌによって記録する際、Ｋ２によって上方の磁気層Ｓ１においても行わ れた記録が再び消去される。したがって第２図の場合、Ｙ＋Ｆは磁気層Ｓ１にだ け記録され、付加信号Ｚはそれよりも下方にある磁気層Ｓ２だけに記録される第 ３図の場合、既述の第２の作動モードにおいて第１図にしたがって記録され走査 された信号が再生増幅器２１へ到達し、この増幅器はヘッドＫ１間の切り替えも 行なう。色搬送波Ｆは変換器２２において再び周波数ｆ２からｆｌへ変換され、 ４．４３±０．６ＭＨｚの通過帯域を有する低域通過フィルタ２３を介して端子 ２４へ達する。この端子においてこの色搬送波を元の周波数位置での再生ために 利用できる。Ｙで周波数変調された画像搬送波はＦＭ復調器２５へ到達し、この 復調器は、６　Ｍ　Ｈｚの遮断周波数を有する低域通過フィルタ２６を介して端 子２８において再生用輝度信号Ｙを供給する。したがって端子２８における信号 Ｙは、４：３フオーマツトの両立性のある再生のために用いることができる。に １により記録された音声搬送波Ｔｍは、変換器３２において再び音声搬送波ＴＩ 、Ｔ２へ変換され、これらは切換スイッチ３３を介してＦＭ復調器４６へ到達す る。このＦＭ変調器は再びステレオ音声信号り、Ｒを供給する。さらに変換器３ ２へ周波数変換器３４からの混合搬送波が供給され、この周波数変換器へは同期 信号Ｓが供給される。ヘッドに２は増幅器３５および５　Ｍ　Ｈｚの遮断周波数 を有する低域通過フィルタを介して、付加信号Ｚで変調された搬送波ＴＺを供給 する。この搬送波の周波数は変換１１９３７においてｆ４からｆｌへ変換される 。変換器３７は、変換器３８により混合搬送波Ｍで制御される。FIG. 2 shows the basic configuration of recording in different magnetic layers. F The head Kl has a small gap width and is connected to the upper magnetic layer S1 of the magnetic tape T. 2 has a larger gap width than that in the head. , thereby also recording on the lower magnetic layer S2. In other words, it is sent in direction 20. The magnetic tape T first passes through point 2, then passes through point 1. do. When recording with Kl, recording is also performed in the upper magnetic layer S1 with K2. The recorded records will be erased again. Therefore, in the case of Figure 2, Y+F is in the magnetic layer S1. The additional signal Z is recorded only in the magnetic layer S2 below it. In the case of Fig. 3, the data is recorded and scanned according to Fig. 1 in the second mode of operation described above. The received signal reaches the regenerative amplifier 21, which also switches between the heads K1. Let's do it. The color carrier F is again converted from frequency f2 to fl in the converter 22, Terminal via a low pass filter 23 with a passband of 4.43±0.6MHz Reach 24. In order to reproduce this color carrier wave at its original frequency position at this terminal, Available. The image carrier frequency modulated by Y reaches the FM demodulator 25, and this The demodulator is connected via a low pass filter 26 with a cutoff frequency of 6 MHz. A luminance signal Y for reproduction is supplied to the output terminal 28. Therefore the signal at terminal 28 Y can be used for compatible reproduction of 4:3 formats. to The audio carrier Tm recorded by 1 is converted back into audio carrier TI in the converter 32. , T2, which reach the FM demodulator 46 via the changeover switch 33. Ru. This FM modulator again provides a stereo audio signal, R. Furthermore, converter 3 2 is supplied with a mixed carrier wave from a frequency converter 34, and this frequency converter is supplied with a synchronous A signal S is provided. 2 in the head is an amplifier 35 and a cutoff frequency of 5 MHz. feeding the carrier wave TZ modulated with the additional signal Z through a low-pass filter with do. The frequency of this carrier wave is converted from f4 to fl in transformation 11937 . The converter 37 is controlled with a mixed carrier wave M by a converter 38.

変換器３８は、同期パルス分離段４０により走査線同期パルスＳで制御される。The converter 38 is controlled with scan line synchronization pulses S by a synchronization pulse separation stage 40.

搬送波ＴＺは、４．７ＭＨｚの遮断周波数を有する低域通過フィルタ３９と圧伸 器３０を介して端子３１へ到達し、この端子において１６．９再生のために付加 信号Ｚを利用することができる。The carrier wave TZ is passed through a low-pass filter 39 with a cutoff frequency of 4.7 MHz and a compander. 16.9 is added for reproduction at this terminal. Signal Z can be used.

既述の第１の作動モードにおいて、スイッチ３３は破線の位置へ切り替えられる 。音声搬送波Ｔ１、Ｔ２はこの場合にはヘッドに２から到来し、１．２〜１゜６ 　Ｍ　Ｈｚの通過帯域を有する帯域通過フィルタ４５を介してＦＭ復調器４６へ 導かれる。In the first mode of operation already described, the switch 33 is switched to the position indicated by the dashed line. . In this case, the audio carrier waves T1 and T2 arrive at the head from 2 and have an angle of 1.2 to 1°6. To the FM demodulator 46 via the bandpass filter 45 having a passband of MHz be guided.

加算段４１は、変調された色搬送波Ｆ、Ｚのない輝度信号Ｙ、ならびに圧伸器３ ０の出力側からの付加信号Ｚを受信する。したがって端子４２において信号ＦＢ ＡＳ＋Ｚを、付加信号Ｚを有する出力信号として１６：９再生を行なう装置のた めに利用できる。加算段４３は色搬送波Ｆ、ならびにＺのないＹしか受信せず、 ４．３フオーマツトを有する従来の機器のための、付加信号Ｚの含まれないＦＢ ＡＳ信号を端子４４に供給する。したがってこの信号からは、所望のようにして 同様に記録された付加信号Ｚが取り除かれている。The summing stage 41 receives the modulated color carrier F, the luminance signal Y without Z, and the compandor 3 0 receives an additional signal Z from the output side. Therefore, at terminal 42 the signal FB For devices that perform 16:9 reproduction of AS+Z as an output signal with additional signal Z. It can be used for Addition stage 43 receives only color carrier F and Y without Z; FB without additional signal Z for conventional equipment with 4.3 format The AS signal is supplied to terminal 44. So from this signal, do as you want The additional signal Z, which was also recorded, has been removed.

Ｆ旧、２ ＦＩＧ、３ 国際調査報告 国際調査報告F old, 2 FIG.3 international search report international search report

Claims (10)

【特許請求の範囲】[Claims] １．輝度信号で変調された画像搬送波および色搬送波が、第１の磁気ヘッドによ り磁気テープ（Ｔ）の第１の磁気層（Ｓ１）における斜めトラックに沿って記録 される形式の、付加信号を有するテレビジョン信号のためのビデオレコーダにお いて、 付加信号（Ｚ）は、第１の磁気ヘッド（Ｋ１）よりも大きなギャップ幅を有する 第２の磁気ヘッド（Ｋ２）により、磁気テープ（Ｔ）中の第１の磁気層（Ｓ１） の下方に位置する第２の磁気層（Ｓ２）に記録されることを特徴とするビデオレ コーダ。1. An image carrier wave and a color carrier wave modulated by a luminance signal are transmitted by a first magnetic head. Recording along diagonal tracks in the first magnetic layer (S1) of the magnetic tape (T) video recorder for television signals with additional signals in the format There, The additional signal (Z) has a larger gap width than the first magnetic head (K1) The second magnetic head (K2) drives the first magnetic layer (S1) in the magnetic tape (T). A video recorder characterized in that information is recorded on a second magnetic layer (S2) located below the video recorder. Coda. ２．前記付加信号（Ｚ）は直角変調された搬送波の形式で記録される、請求項１ 記載のレコーダ。2. 2. The additional signal (Z) is recorded in the form of a quadrature modulated carrier wave. Recorder listed. ３．記録および／または再生の際、搬送波の周波数が混合搬送波（Ｍ）により変 換され、該混合搬送波は、信号の走査線同期パルスの周波数逓倍化により得られ る、請求項２記載のレコーダ。3. During recording and/or playback, the frequency of the carrier wave is changed by the mixed carrier wave (M). The mixed carrier wave is obtained by frequency multiplication of the scan line synchronization pulse of the signal. 3. The recorder according to claim 2. ４．前記第２の磁気ヘッド（Ｋ２）は、第１の磁気ヘッド（Ｋ１）よりも大きい 約±３０°のアジマス角を有する、請求項１記載のレコーダ。4. The second magnetic head (K2) is larger than the first magnetic head (K1). 2. The recorder of claim 1, having an azimuth angle of approximately ±30°. ５．前記第２の磁気ヘッド（Ｋ２）により書き込まれるトラックは、これらのト ラックの間のスペースが保たれるような幅を有する、請求項１記載のレコーダ。5. The tracks written by the second magnetic head (K2) are 2. A recorder according to claim 1, having a width such that space between racks is maintained. ６．音声信号（Ｌ，Ｒ）で周波数変調された音声搬送波（Ｔ１，Ｔ２）は、第１ のヘッド（Ｋ１）により第１の磁気層（Ｓ１）に周波数分割多重形式で画像信号 および色搬送波（Ｆ）とともに記録される、請求項１記載のレコーダ。6. Audio carrier waves (T1, T2) frequency-modulated with audio signals (L, R) are first The head (K1) transmits an image signal to the first magnetic layer (S1) in frequency division multiplexing format. 2. Recorder according to claim 1, wherein the recorder is recorded with a color carrier (F) and a color carrier (F). ７．前記音声搬送波（Ｔ１，Ｔ２）は、それ自体第１の磁気層（Ｓ工）に記録さ れた色搬送波の周波数範囲内に位置し、該色搬送波は第２の磁気ヘッド（Ｋ２） により第２の磁気層（Ｓ２）に記録される、請求項１記載のレコーダ。7. The audio carrier waves (T1, T2) are themselves recorded on the first magnetic layer (S). The color carrier is located within the frequency range of the second magnetic head (K2). 2. A recorder according to claim 1, wherein the second magnetic layer (S2) is recorded by: ８．付加信号（Ｚ）を記録するために、記録時には振幅圧縮を行ない再生時には 振幅伸長を行なう圧伸回路が設けられている、請求項１記載のレコーダ。8. In order to record the additional signal (Z), amplitude compression is performed during recording and during playback. 2. The recorder according to claim 1, further comprising a companding circuit for amplitude expansion. ９．第２の磁気ヘッド（Ｋ２）により、記録された付加信号の存在に対する識別 信号が記録される、請求項１記載のレコーダ。9. Identification of the presence of additional signals recorded by the second magnetic head (K2) Recorder according to claim 1, in which the signal is recorded. １０．第１の作動モードにおいて、前記付加信号（Ｚ）、および周波数変換され 音声信号で周波数変調された音声搬送波（Ｔ１ｍ、Ｔ２ｍ）は、周波数分割多重 形式で第２の磁気ヘッド（Ｋ２）により記録され、第２の作動モードにおいて、 前記付加信号（Ｚ）は第２の磁気ヘッド（Ｋ２）により記録され、音声信号で周 波数変調された音声搬送波（Ｔ１，Ｔ２）は、画像搬送波および色搬送波との周 波数分割多重形式で第１の磁気ヘッド（Ｋ１）で記録される、請求項１記載のレ コーダ。10. In a first mode of operation, the additional signal (Z) and the frequency converted Audio carrier waves (T1m, T2m) frequency-modulated with audio signals are frequency-division multiplexed. recorded by the second magnetic head (K2) in the form of The additional signal (Z) is recorded by the second magnetic head (K2) and is reproduced as an audio signal. The wave number modulated audio carrier waves (T1, T2) are frequency-modulated with the image carrier wave and the color carrier wave. The record according to claim 1, wherein the record is recorded by the first magnetic head (K1) in a wave number division multiplexing format. Coda.
JP3513564A 1990-08-30 1991-08-21 Video recorder for television signals with additional signals Pending JPH06500438A (en)

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JPH05344535A (en) * 1992-06-05 1993-12-24 Matsushita Electric Ind Co Ltd Magnetic recording/reproducing device for video signal to which compensation signal is added
JP3093494B2 (en) * 1992-11-18 2000-10-03 株式会社東芝 Diversity signal processing device
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