JPS60212091A - Magnetic picture recording and reproducing device - Google Patents

Magnetic picture recording and reproducing device

Info

Publication number
JPS60212091A
JPS60212091A JP59069418A JP6941884A JPS60212091A JP S60212091 A JPS60212091 A JP S60212091A JP 59069418 A JP59069418 A JP 59069418A JP 6941884 A JP6941884 A JP 6941884A JP S60212091 A JPS60212091 A JP S60212091A
Authority
JP
Japan
Prior art keywords
signal
recording
luminance
color
reproduction
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
JP59069418A
Other languages
Japanese (ja)
Inventor
Kazuhiro Konoshima
此島 和弘
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 JP59069418A priority Critical patent/JPS60212091A/en
Publication of JPS60212091A publication Critical patent/JPS60212091A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/79Processing of colour television signals in connection with recording
    • H04N9/80Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/81Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/79Processing of colour television signals in connection with recording
    • H04N9/80Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82Transformation 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To make a filter of each signal unnecessary, and to obtain a satisfactory picture quality by recording independently a luminance recording signal and a color recording signal in different areas on a magnetic recording medium. CONSTITUTION:In terms of a recording system A, an input video signal is inputted to a separator circuit 1, separated into luminance and color signals, which are inputted to recording amplifiers 8 and 9. In this processing, the FM modulated luminance signal will not pass through to an HPF. After the color signal is stored in a memory 7 to apply a time compression, it is inputted to the recording amplifiers 8 and 9. A magnetic head 21 and 22 are separated by 180 deg., while a magnetic tape 24 is wound at an angle of 180 deg.+a deg. (10 deg.<=a deg.<=50 deg.). Thus the luminance recording signal is recorded in an area 31 of the tape 24, while the time-compressed color signal is recorded in an area 22. In such a recording process, two recording signals never pass through the HPF and a BPF to apply the frequency multiplex recording.

Description

【発明の詳細な説明】 [発明の技術分野] この発明は磁気録画再生装置に関し、特にその画質の改
善に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a magnetic recording and reproducing device, and particularly to improving the image quality thereof.

[従来技術] 従来の磁気録画再生装置のビデオデープレコーダ(以後
rVTRJと略す)では、ビデオ信号は輝度信号とカラ
ー信号に分シブられ、llI度信号はFM変調されてカ
ラー信号は低域変換される。これらの信号処理がなされ
た輝度記録信号とカラー記録信号は、磁気テープの同一
パターン上に周波数多重記録を行なうために、それぞれ
バイパスフィルタとバンドパスフィルタに通されて周波
数分割される。第1図はこのように周波数分割された輝
度記録信号とカラー記録信号の周波数分布を示している
。図において、横軸は周波数を表わし縦軸は振幅を示し
ている。すなわちFM変調された輝度記録信号すと低域
変換されたカラー記録信号Cの周波数帯域が臆ならない
ように、それらの信号はその周波数帯域の一部をフィル
タによってカットされている。この周波数帯域のカット
によって、輝度信号においては解像度の劣化を生じ、カ
ラー信号においては色の立上がりの劣化を生ずる。さら
に同一パターン上に輝度信号とカラー信号が周波数多重
記録されるため、両信号が互いに干渉し合ってバターニ
ングなどの症状も生じやすいという欠点がある。
[Prior Art] In a video recorder (hereinafter abbreviated as rVTRJ), which is a conventional magnetic recording and reproducing device, a video signal is divided into a luminance signal and a color signal, the Illimeter signal is FM modulated, and the color signal is low frequency converted. Ru. The luminance recording signal and color recording signal that have been subjected to signal processing are passed through a bypass filter and a bandpass filter to be frequency-divided, respectively, in order to perform frequency multiplex recording on the same pattern on the magnetic tape. FIG. 1 shows the frequency distribution of the luminance recording signal and the color recording signal which are frequency-divided in this way. In the figure, the horizontal axis represents frequency and the vertical axis represents amplitude. That is, so that the frequency bands of the FM-modulated luminance recording signal and the low-frequency-converted color recording signal C are not affected, a part of the frequency band of these signals is cut by a filter. Cutting this frequency band causes deterioration in resolution in luminance signals and deterioration in color rise in color signals. Furthermore, since the luminance signal and the color signal are frequency-multiplexed and recorded on the same pattern, there is a drawback that the two signals interfere with each other, which tends to cause problems such as buttering.

[発明の概要] この発明の目的は、従来の磁気録画再生装置における上
述のような欠点を除去して画質を改善した磁気録画再生
装置を提供することである。
[Summary of the Invention] An object of the present invention is to provide a magnetic recording and reproducing device that improves image quality by eliminating the above-mentioned drawbacks of conventional magnetic recording and reproducing devices.

本発明の磁気録画再生装置における特徴は、ビデオ信号
を111度信号とカラー信号に分離する分離手段と、前
記輝度信号をll痕FM記録信号に変調する輝度信号変
調手段と、前記カラー信号をディジタルカラー信号に変
換するカラー記録信号変換手段と、前記ディジタルカラ
ー信号を時間圧縮のために一時的に記憶してディジタル
カラー圧縮記録信号としで送り出1記録メモリ手段と、
前記輝度FM記録信号と前記ディジタルカラー圧縮記録
信号を磁気記録媒体上の異なワだ領域に記録する電磁変
換記録手段と、記録された磁気記録媒体からIlKFM
再生信号とディジタルカラー圧縮再生信号を再生する電
磁変換再生手段と、前記輝度FM再生信号を輝度再生信
号に復調するEl1度信号復調手段と、復調された前記
1l11rX再生信号を遅延させる遅延手段と、前記デ
ィジタルカラー圧縮再生信号を時間伸長のために一時的
に記憶してディジタルカラー再生i= 8として送り出
す再生メモリ手段と、前記ディジタルカラー再生信号を
カラー再生信号に変換するカラー再生信号変換手段と前
記カラー再生信号と前記遅延手段によって遅延された前
記輝度信号とを合成して再生ピfオi:A号を得る合成
手段を備えたことである。
The magnetic recording/reproducing apparatus of the present invention is characterized by: separating means for separating a video signal into a 111 degree signal and a color signal; a luminance signal modulating means for modulating the luminance signal into a 111 degree FM recording signal; a color recording signal converting means for converting into a color signal; a recording memory means for temporarily storing the digital color signal for time compression and sending it out as a digital color compressed recording signal;
electromagnetic conversion recording means for recording the luminance FM recording signal and the digital color compression recording signal in different wave areas on a magnetic recording medium;
an electromagnetic conversion reproduction means for reproducing a reproduction signal and a digital color compressed reproduction signal; an El1 degree signal demodulation means for demodulating the luminance FM reproduction signal into a luminance reproduction signal; and a delay means for delaying the demodulated 1l11rX reproduction signal; reproduction memory means for temporarily storing the digital color compressed reproduction signal for time expansion and sending it out as digital color reproduction i=8; color reproduction signal conversion means for converting the digital color reproduction signal into a color reproduction signal; The present invention further includes a synthesizing means for synthesizing the color reproduced signal and the luminance signal delayed by the delaying means to obtain a reproduced image i:A.

[発明の実施例] 5121%3は本発明の一実施例を示すブロック図であ
る。以下に本実施例の構成と動作を説明する。
[Embodiment of the Invention] 5121%3 is a block diagram showing an embodiment of the present invention. The configuration and operation of this embodiment will be explained below.

第2図(A)は記録系の構成を示しており、まずビデオ
信号は分離回路1に入力されて輝度信号とカラー信号に
分離される。この分離された輝度信号は、従来と同様に
エンファシス回路2とホワイトクリップ回路(またはA
Cクリップ回路)3を介してFM変調回路4にて規定の
周波数にFM変調された俵に記録アンプ8と9に入力さ
れる。
FIG. 2(A) shows the configuration of the recording system. First, a video signal is input to a separation circuit 1 and separated into a luminance signal and a color signal. This separated luminance signal is sent to the emphasis circuit 2 and the white clip circuit (or A
The bales are FM-modulated to a specified frequency by an FM modulation circuit 4 via a C clip circuit 3 and then input to recording amplifiers 8 and 9.

この過程において、FM変調された輝度信号はバイパス
フィルタに通されないので、FM変調によって生じた側
波帯もすべて記録することができる。
In this process, the FM modulated luminance signal is not passed through the bypass filter, so that all sidebands caused by the FM modulation can also be recorded.

また、分離されたカラー信号は周波数変換回路5によっ
て低域変換されて、A/D変挽回路6によってディジタ
ル信号に変換される。このディジタルカラー信号は、メ
モリ7に一時的に記憶された後に記録アンプ8と9に入
力されて、磁気ヘッドCH1とCH2によって磁気媒体
(図示せず)に記録される。ここで、メモリ7の書込お
よび読出はメモリ制御回路11によって制御されている
Further, the separated color signal is subjected to low frequency conversion by a frequency conversion circuit 5, and converted into a digital signal by an A/D conversion circuit 6. This digital color signal is temporarily stored in the memory 7, then input to the recording amplifiers 8 and 9, and recorded on a magnetic medium (not shown) by the magnetic heads CH1 and CH2. Here, writing and reading of the memory 7 is controlled by a memory control circuit 11.

メモリ制御回路11はクロック発生回路10のクロック
を利用してメモリの書込と続出のKlを変化させている
。そしてディジタルカラー信号は時間圧縮されて輝度信
号とは異なるテープパターンに記録することができる(
第4図参照)。
The memory control circuit 11 uses the clock from the clock generation circuit 10 to change Kl for memory writing and subsequent writing. The digital color signal can then be time-compressed and recorded on a different tape pattern than the luminance signal (
(See Figure 4).

第2図(B)は再生系の構成を示しており、磁気ヘッド
CH1とCH2を介してヘッドアンプ19によって抽出
されたFM輝度信号は、従来と同様にFM復調回路18
とディエンフアシス回路17を介してIII度信号に再
生される1、この再生された輝度信号は、元の同一フィ
ールドのカラー信号と同期させるために、遅延回路16
に通された俵に合成回路12へ供給される。また、ヘッ
ドアンプ19で抽出されたディジタルカラー信号はメモ
リ15に一時記憶された後にD/A変挽回路14へ入力
される。ここで、メモリ15はメtり制御回路11によ
って制御され、その書込と脱出速度は記録時の場合と逆
の速度で行なわれて、時間圧縮されていたディジタルカ
ラー信号は元の時間長さに戻る。D/A変換回路14に
よってアナログ信号に戻されたカラー信号は、周波数変
換回路13によってもとのカラー信号に再生されて合成
回路12へ入力される。合成回路12は、これらの入ツ
ノされるカラー信号と輝度信号を合成してビデオ信号を
出力する。
FIG. 2(B) shows the configuration of the reproduction system, in which the FM luminance signal extracted by the head amplifier 19 via the magnetic heads CH1 and CH2 is sent to the FM demodulation circuit 18 as in the conventional case.
The regenerated luminance signal is then regenerated into a III degree signal via a de-emphasis circuit 17. This regenerated luminance signal is passed through a delay circuit 16 in order to synchronize it with the original color signal of the same field.
The bales passed through are fed to the synthesis circuit 12. Further, the digital color signal extracted by the head amplifier 19 is temporarily stored in the memory 15 and then input to the D/A conversion circuit 14. Here, the memory 15 is controlled by the meter control circuit 11, and its writing and exiting speeds are performed at a speed opposite to that at the time of recording, so that the time-compressed digital color signal is restored to its original time length. Return to The color signal converted back to an analog signal by the D/A conversion circuit 14 is regenerated into the original color signal by the frequency conversion circuit 13 and input to the synthesis circuit 12. The synthesis circuit 12 synthesizes these input color signals and luminance signals and outputs a video signal.

WI3図は第2図のように構成された磁気録画再生装置
を用いて磁気テープに記録する場合の構成を示している
。図において、磁気ヘッド21と22は回転ドラム23
の概略円周上に180°隔てられて設けられており、磁
気テープ24は矢印R方向に回転する回転ドラムの円周
上に180°+8’(10°≦a°≦50°)の角度で
巻付けられて矢印F方向に走行させられる。磁気ヘッド
21と22は第2図のCHlとCH2に相当し、それら
は記録時と再生時において併用されている。
FIG. WI3 shows a configuration for recording on a magnetic tape using the magnetic recording/reproducing apparatus configured as shown in FIG. In the figure, magnetic heads 21 and 22 are connected to a rotating drum 23.
The magnetic tapes 24 are arranged at an angle of 180°+8' (10°≦a°≦50°) on the circumference of a rotating drum rotating in the direction of arrow R. It is wound around and run in the direction of arrow F. The magnetic heads 21 and 22 correspond to CH1 and CH2 in FIG. 2, and are used both during recording and reproduction.

このように記録されたテープの記録パターンを示したの
が第4図である。第4図において、輝度記録信号はテー
プパターンの領域31の180°の範囲に記録され、時
間圧縮されたディジタルカラー信号は領域22のa’の
範囲に記録されることとなる。このように記録された磁
気テープから、2つの磁気ヘッドCHIとCH2を介し
て再生された2つの信号がスイッチングされて出力され
るヘッドアンプ出力の関係を示したのが第5図である。
FIG. 4 shows the recording pattern of the tape recorded in this manner. In FIG. 4, the luminance recording signal is recorded in a 180° range of the tape pattern area 31, and the time-compressed digital color signal is recorded in the area a' of the area 22. FIG. 5 shows the relationship between the head amplifier outputs of the two signals reproduced from the magnetic tape recorded in this manner through the two magnetic heads CHI and CH2, which are switched and output.

図において、FFは磁気ヘッドCHIとOH2の間の輝
度再生信号の出力期間を調整するスイッチング信号であ
る。磁気ヘッドCHIとCH2の出力範囲32′はディ
ジタルカラー圧縮再生信号であり、範囲31′は輝度再
生信号の出力範囲である。このような輝度再生信号31
′とディジタルカラー圧縮再生信号32′は第2図にお
いて述べたような信号処理を経た後に合成回路12によ
って合成されてビデオ信号として出力される。
In the figure, FF is a switching signal that adjusts the output period of the brightness reproduction signal between the magnetic heads CHI and OH2. The output range 32' of the magnetic heads CHI and CH2 is the digital color compression reproduction signal, and the range 31' is the output range of the luminance reproduction signal. Such a luminance reproduction signal 31
' and the digital color compressed reproduction signal 32' are subjected to signal processing as described in FIG. 2, and then synthesized by the synthesis circuit 12 and output as a video signal.

[発明の効果] 以上のように、本発明によれば、ll1度記録信号とカ
ラー記録信号は磁気記録媒体上の異なった領域に別々に
記録されるので、それぞれの信号をフィルタする必要が
なく解像度や色の立上がりにおける劣化のない良好な画
質の磁気記録再生装置を提供することができる。
[Effects of the Invention] As described above, according to the present invention, since the 11 degree recording signal and the color recording signal are recorded separately in different areas on the magnetic recording medium, there is no need to filter each signal. It is possible to provide a magnetic recording and reproducing device with good image quality without deterioration in resolution or color rise.

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

第1図は従来の磁気録画再生装置における輝度信号とカ
ラー信号の周波数分布を示す図である。 第2図は本発明の一実施例を示すブロック図である。 第3図は本発明の一実施例における回転磁気ヘッドと磁
気テープの関係を示す図である。 第4図は本発明によって記録された磁気テープの記録パ
ターンの一例を示す図である。 第5図は第3図の磁気l\ラッド1と22によって再生
されたカラー信号と輝度信号の出力領域を示す図である
。 図において、1は分離回路、2はエンファシス回路、3
はホワイトクリップ−回路(またはACクリップ回路)
、4はFM変調回路、5は周波数変換回路、6はA/D
変換回路、7はメモリ、8は磁気ヘッドCI−IIの記
録アンプ、9は磁気ヘッドCH2の記録アンプ、°10
はクロック発生回路、11はメモリ制御回路、12は合
成回路、13は周波数変換回路、14はD/A変換回路
、15はメモリ、16は遅延回路、17はディエンファ
シス回路、18はFMI11回路、19はヘッドアンプ
、21は第1の磁気ヘッドCHI、22は第2の磁気ヘ
ッドCH2,23は回転ドラム、24は磁気テープ、3
1は輝度記録信号の記録領域、32はディジタルカラー
圧縮記録信号の記録領域、31′は輝度再生信号の出力
領域、32−はディジタルカラー圧縮再生信号の出力領
域を示す。 代理人 大 岩 増 雄 第3図 つ3 H2 第牛図 第5図
FIG. 1 is a diagram showing the frequency distribution of brightness signals and color signals in a conventional magnetic recording/reproducing device. FIG. 2 is a block diagram showing one embodiment of the present invention. FIG. 3 is a diagram showing the relationship between a rotating magnetic head and a magnetic tape in one embodiment of the present invention. FIG. 4 is a diagram showing an example of a recording pattern of a magnetic tape recorded according to the present invention. FIG. 5 is a diagram showing the output area of the color signal and luminance signal reproduced by the magnetic rads 1 and 22 of FIG. In the figure, 1 is a separation circuit, 2 is an emphasis circuit, and 3 is a separation circuit.
is a white clip circuit (or AC clip circuit)
, 4 is an FM modulation circuit, 5 is a frequency conversion circuit, 6 is an A/D
Conversion circuit, 7 memory, 8 recording amplifier for magnetic head CI-II, 9 recording amplifier for magnetic head CH2, °10
11 is a clock generation circuit, 11 is a memory control circuit, 12 is a synthesis circuit, 13 is a frequency conversion circuit, 14 is a D/A conversion circuit, 15 is a memory, 16 is a delay circuit, 17 is a de-emphasis circuit, 18 is an FMI11 circuit, 19 is a head amplifier, 21 is a first magnetic head CHI, 22 is a second magnetic head CH2, 23 is a rotating drum, 24 is a magnetic tape, 3
Reference numeral 1 indicates a recording area for a luminance recording signal, 32 a recording area for a digital color compressed recording signal, 31' an output area for a luminance reproduction signal, and 32- an output area for a digital color compression reproduction signal. Agent Masu Oiwa Figure 3 H2 Figure 5

Claims (2)

【特許請求の範囲】[Claims] (1) 磁気録画再生装置において、 ビデオ信号を輝度信号とカラー信号に分離する分離手段
と、 前記輝度信号を輝度FM記録信号に変調する輝度信号変
調手段と、 前記カラー信号をディジタルカラー信号に変換するカラ
ー記録信号変換手段と、 前記ディジタルカラー信号を時間圧縮のために一時的に
記憶してディジタルカラー圧縮記録信号として送り出す
記録メモリ手段と、 前記輝度FM記録信号と前記ディジタルカラー圧縮記録
信号を磁気記録媒体上の異なった領域に記録する電磁変
換記録手段と、 記録された磁気記録媒体から輝度FM再生信号とディジ
タルカラー圧縮再生信号を再生する電磁変換再生手段と
、 前記輝度FM再生信号を輝度再生信号に復調する輝度信
号復調手段と、 前記輝度再生信号を遅延させて送り出す遅延手段と、 前記ディジタルカラー圧縮再生信号を時間伸長のために
一時的に記憶してディジタルカラー再生信号どして送り
出す再生メモリ手段と、前記ディジタルカラー再生信号
をカラー再生信号に変換するカラー再生メモリ手段と、
前記カラー再生信号と前記遅延手段によって遅延された
前記輝度再生信号とを合成して再生ビデオ信号を得る合
成手段 を備えたことを特徴とする磁気録画再生装置。
(1) A magnetic recording and reproducing device, comprising: separating means for separating a video signal into a luminance signal and a color signal; a luminance signal modulating means for modulating the luminance signal into a luminance FM recording signal; and converting the color signal into a digital color signal. recording memory means for temporarily storing the digital color signal for time compression and sending it out as a digital color compressed recording signal; and converting the luminance FM recording signal and the digital color compressed recording signal into an electromagnetic conversion recording means for recording in different areas on a recording medium; an electromagnetic conversion reproduction means for reproducing a luminance FM reproduction signal and a digital color compression reproduction signal from the recorded magnetic recording medium; and a luminance reproduction means for reproducing the luminance FM reproduction signal. A luminance signal demodulating means for demodulating the luminance signal, a delaying means for delaying and sending out the luminance reproduction signal, and a reproduction device for temporarily storing the digital color compressed reproduction signal for time expansion and transmitting it as a digital color reproduction signal. memory means; and color reproduction memory means for converting the digital color reproduction signal into a color reproduction signal;
A magnetic recording and reproducing apparatus characterized in that the magnetic recording and reproducing apparatus comprises a synthesizing means for synthesizing the color reproduced signal and the luminance reproduced signal delayed by the delay means to obtain a reproduced video signal.
(2) 前記磁気記録媒体は磁気テープであって、 前記電磁変換記録手段と前記電磁変換再生手段は回転ド
ラムの概略円周上に1800隔てられて設けられた2つ
の磁気ヘッドを共用しており、前記磁気テープは前記回
転ドラムの円周上に180°+a’(10°≦a’≦5
0°)の角度で巻付けられて走行させられ、前記2つの
磁気ヘッドによって前記輝度FM記録信号が前記180
’の領域に記録されて、前記ディジタルカラー圧縮記録
信号が80の領域に記録されるように構成されているこ
とを特徴とする特訂請求の範囲第1項記載の磁気録画再
生装置。
(2) The magnetic recording medium is a magnetic tape, and the electromagnetic conversion recording means and the electromagnetic conversion reproducing means share two magnetic heads provided approximately 1800 degrees apart on the circumference of a rotating drum. , the magnetic tape is placed on the circumference of the rotating drum at an angle of 180°+a'(10°≦a'≦5
The two magnetic heads record the brightness FM recording signal at an angle of 180 degrees.
2. The magnetic recording and reproducing apparatus according to claim 1, wherein the digital color compressed recording signal is recorded in an area 80.
JP59069418A 1984-04-05 1984-04-05 Magnetic picture recording and reproducing device Pending JPS60212091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59069418A JPS60212091A (en) 1984-04-05 1984-04-05 Magnetic picture recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59069418A JPS60212091A (en) 1984-04-05 1984-04-05 Magnetic picture recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS60212091A true JPS60212091A (en) 1985-10-24

Family

ID=13402042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59069418A Pending JPS60212091A (en) 1984-04-05 1984-04-05 Magnetic picture recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS60212091A (en)

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