JPS62219892A - Method for recording video signal - Google Patents
Method for recording video signalInfo
- Publication number
- JPS62219892A JPS62219892A JP61062295A JP6229586A JPS62219892A JP S62219892 A JPS62219892 A JP S62219892A JP 61062295 A JP61062295 A JP 61062295A JP 6229586 A JP6229586 A JP 6229586A JP S62219892 A JPS62219892 A JP S62219892A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- signal
- signals
- tracks
- time
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000008707 rearrangement Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は映像信号記録再生方法に関する。特に輝度信号
と線順次色信号を時間軸多重した信号を多チャンネルに
分割し並列記録する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a video signal recording and reproducing method. In particular, it relates to a method of dividing a signal obtained by time-axis multiplexing a luminance signal and a line-sequential color signal into multiple channels and recording them in parallel.
従来の技術
回転２ヘツドヘリカルスキヤンＶＴＲは、ＶＨ５および
β方式に代表される多くのＶＴＲに基本方式として採用
されている。これは、回転ドラム上の互いに１８σの位
置に磁気ヘッドを取シ付け、ドラムが１回転する間にテ
ープ上の２本のトラックとして２フイールド（１フレー
ム）を記録するものである。Conventional technology A rotating two-head helical scan VTR is employed as a basic system in many VTRs, typified by the VH5 and β systems. In this system, magnetic heads are mounted on a rotating drum at positions 18σ from each other, and two fields (one frame) are recorded as two tracks on a tape during one revolution of the drum.
標準方式のテレビジョン信号を記録するための上記ＶＴ
Ｒを用いて、標準方式の２倍の帯域を持つ広帯域映像信
号を２チャンネルの標準方式と同じ帯域の信号に分割し
て２チャンネル同時に並列に記録する方法がある。The above VT for recording standard television signals.
There is a method using R to divide a wideband video signal having twice the band of the standard method into two channels of signals of the same band as the standard method, and record the two channels simultaneously in parallel.
一方、カラー映像信号を記録する方法として輝度信号に
、時間軸圧縮した色信号を時間軸上で多重したＴ ＣＩ
（Ｔｉｍｅ Ｃｏｍｐｒｅｓｓｅｄ Ｉｎｔｅｇｒａ
ｔｉｏｎ ）信号の形に変換した後、記録する方法があ
る。On the other hand, as a method for recording color video signals, TCI is used that multiplexes a time-axis compressed color signal onto a luminance signal on the time axis.
(Time Compressed Integra
There is a method of converting the signal into a signal form and then recording it.
これら２つの方法を組みあわせ、以下のような記録方法
が考えられる。記録すべき信号の帯域として、輝度（Ｙ
）信号が９ＭＨｚ、色（Ｃ）信号が３Ｍ１ｌｚのものを
考える。ここで色信号は線順次のものを考える。すなわ
ちラインごとに、第１の色信号Ｃ１と第２の色信号Ｃ２
が交互に記録されるものとする。The following recording method can be considered by combining these two methods. The luminance (Y
) signal is 9MHz, and the color (C) signal is 3M1lz. Here, consider a line-sequential color signal. That is, for each line, the first color signal C1 and the second color signal C2
shall be recorded alternately.
この信号を記録するために、Ｙを１Ｈごとに１．５倍に
時間軸伸長し２チャンネルに分割した後、これらにＣを
２倍に時間軸圧縮した信号を時間軸多重する。In order to record this signal, Y is expanded in the time axis by 1.5 times every 1H and divided into two channels, and then a signal obtained by compressing the time axis of C by twice is time-axis multiplexed onto these channels.
これによってｅＭＨｚ帯域の２チャンネルの信号が得ら
れる。以上のようすを第３図で説明する。As a result, two-channel signals in the eMHz band are obtained. The above situation will be explained with reference to FIG.
ａは入力信号であシ、数字はライン番号である。a is an input signal, and the numbers are line numbers.
Ｃ４，０□においてライン番号が記入されていないライ
ンは記録されないものである。Lines for which line numbers are not written in C4,0□ are not recorded.
ｂは記録信号である。人、Ｂはそれぞれ２チャンネルに
分割された信号であシ、上記したようにＹを１．６倍時
間軸圧縮したものと、線順次Ｃ信号を２倍に時間軸圧縮
したものが時間軸多重された形になっている。なおこの
ように時間軸圧縮処理を行なった場合には記録再生系を
通ることによって生ずる時間軸変動を除くために、同期
信号およびバースト信号を挿入するのが普通である。b is a recording signal. Human and B signals are each divided into two channels, and as mentioned above, the Y signal is time-axis compressed by 1.6 times, and the line-sequential C signal is time-axis compressed by 2 times, and the signal is time-axis multiplexed. It is in the shape of Note that when time axis compression processing is performed in this manner, a synchronization signal and a burst signal are usually inserted in order to eliminate time axis fluctuations caused by passing through a recording/reproducing system.
この信号を２チャンネル同時に記録すれば、第４図のよ
うになる。１２は磁気テープ、１３ム、１３Ｂは記録ト
ラック、Ｈはヘッド走行方向、Ｔはテープ走行方向であ
る。１３ムと１３Ｂにおいて、互いに隣接する！信号は
互いに類似した信号となっているが、Ｃ信号については
全くことなるＣ１と０２が隣接して記録されることにな
るため、互いにクロストークの悪影響が画面に現われる
おそれがある。If this signal is recorded on two channels simultaneously, the result will be as shown in Fig. 4. 12 is a magnetic tape, 13 is a recording track, 13B is a recording track, H is a head running direction, and T is a tape running direction. Adjacent to each other in 13m and 13B! Although the signals are similar to each other, since the C signals C1 and 02, which are completely different, are recorded adjacent to each other, there is a possibility that an adverse effect of crosstalk between them will appear on the screen.
発明が解決しようとする問題点
以上のような記録方法においては、互いに異なる色信号
が隣接して記録されるため、この部分でのクロストーク
の影響は避けられない。本発明はこのような問題を解決
する新しい記録方法を提供しようとするものである。Problems to be Solved by the Invention In the recording method described above, different color signals are recorded adjacent to each other, so the influence of crosstalk in this portion is unavoidable. The present invention aims to provide a new recording method that solves these problems.
問題点を解決するための手段
本発明は上記問題点を解決するために、時間軸伸長して
２チャンネルに分割した輝度信号と、時間軸圧縮した線
順次色信号を時間軸多重して作成した２チャンネルの信
号を、画面上で隣接する輝度信号同志、互いに近接する
同種の色信号同志を記録パターン上で隣接するように記
録することにより、クロストークの影響を軽減した記録
方法を提供しようとするものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention creates a luminance signal that is time-axis expanded and divided into two channels, and a time-axis compressed line-sequential color signal that is time-axis multiplexed. An attempt is made to provide a recording method that reduces the influence of crosstalk by recording two-channel signals so that luminance signals adjacent to each other on the screen and color signals of the same type that are adjacent to each other are adjacent to each other on the recording pattern. It is something to do.
作用
本発明によれば、上記した方法により画面上で互いに近
接した輝度信号と同種の色信号が記録パターン上で隣接
して記録されるため、再生時に隣接トラックからのクロ
ストークノイズが軽減される。According to the present invention, luminance signals and color signals of the same type that are close to each other on the screen are recorded adjacent to each other on the recording pattern by the method described above, so that crosstalk noise from adjacent tracks is reduced during playback. .
実施例
第１図に本発明の一実施例における信号処理、第２図に
記録パターンを示す。このように同時に並列して記録す
る色信号を同種のものとなるようにＣ１はＣ１同志、Ｃ
２はＣ２同志並べることによｆｉＹ、Ｃともに隣接トラ
ックに類似の信号が記録される。なお、上記バースト信
号はＣ１ラインとＣ２ラインの区別ができるように位相
を反転しておく。このようなカラー信号の並べかえは、
小規模のメモリを使用して比較的簡単な処理を行なうこ
とにより可能である。Embodiment FIG. 1 shows signal processing in an embodiment of the present invention, and FIG. 2 shows a recording pattern. In this way, so that the color signals recorded simultaneously in parallel are of the same type, C1 is connected to C1,
By arranging C2 and C2, similar signals are recorded on adjacent tracks for both fiY and C. Note that the phase of the burst signal is inverted so that the C1 line and the C2 line can be distinguished. This kind of rearrangement of color signals is
This is possible by using a small amount of memory and performing relatively simple processing.
以上のように記録することにより同時に記録される記録
トラック１３Ａ 、 １ ａＢは互いに異なるアジマス
角を持つヘッドにより記録すれば比較的近接して記録し
ても隣接のクロストークの影響を軽減することができる
。回転ヘッドの１回の走査に関しては以上のようにして
互いのクロストークの影響が軽減できるが、更に１３Ｂ
に対しては前の走査で記録した１４ムからのクロストー
クがある。By recording as described above, if the recording tracks 13A and 1aB that are simultaneously recorded are recorded with heads having different azimuth angles, it is possible to reduce the influence of adjacent crosstalk even if they are recorded relatively close to each other. can. Regarding one scan of the rotating head, the influence of mutual crosstalk can be reduced in the above manner, but in addition, 13B
There is crosstalk from the 14mm recorded in the previous scan.
このトラックの信号は１走査で１フイールドを記録する
場合には画面上で近接する走査線の信号が記録されるた
め１３Ｂと１４人の信号を、１３人と１４１の関係と同
様の考え方で並べれば同様の効果がある。一方、セグメ
ント記録のように２回以上の走査で１フイールドを記録
する場合のように、１３人、１３Ｂと１４人、１４Ｂが
画面の全く異なる部分が記録される場合、１３Ｂと１４
Ａには全く相関性のない信号が記録されることになる。When recording one field in one scan, the signals of this track will record the signals of adjacent scanning lines on the screen, so the signals of 13B and 14 can be arranged in the same way as the relationship between 13 and 141. It has a similar effect. On the other hand, when 13 people, 13B, 14 people, and 14B are completely different parts of the screen, as in the case of segment recording where one field is recorded in two or more scans, 13B and 14
A signal with no correlation at all will be recorded.
この場合には１３Ａと１３Ｂのトラック間隔に比べ１３
Ｂと１４Ａのトラック間隔を広くとることにより影響を
軽減することができる。In this case, compared to the track spacing between 13A and 13B, 13
The influence can be reduced by widening the track interval between tracks B and 14A.
さらにセグメント記録の場合には、特殊再生時に各セグ
メントが入り乱れた画面が再生されるが、これを改良す
るために本来の再生ヘッドのほかに高さを変えて補助ヘ
ッドを取り付け、異なるフィールドの同一セグメントを
同時に再生し、本来の再生ヘッドが他のセグメントを再
生している間は補助ヘッドの出力に切りかえる方法があ
るが、この補助ヘッドも本来は２チャンネルが必要であ
る。Furthermore, in the case of segment recording, a screen with mixed segments is played back during special playback. There is a method of playing back segments simultaneously and switching to the output of an auxiliary head while the original playback head is playing another segment, but this auxiliary head also originally requires two channels.
この補助ヘッドを１チャンネルにした場合には、１Ｈお
きの情報しか再生されないが、補間等の処理を行なえば
垂直解像度を２分の１にした状態の画面が得られる。こ
のとき、第４図に示す従来のパターンで記録されていれ
ば第１または第２の色信号しか得られないため再生画像
には色はつかない。一方、第２図に示す本発明になるパ
ターンでは、第１および第２の色信号が交互に得られる
ため色の付いた再生画像が得られる。When this auxiliary head is set to one channel, only information every 1H is reproduced, but if processing such as interpolation is performed, a screen with vertical resolution halved can be obtained. At this time, if the conventional pattern shown in FIG. 4 is recorded, only the first or second color signal will be obtained, so the reproduced image will not be colored. On the other hand, in the pattern according to the present invention shown in FIG. 2, the first and second color signals are obtained alternately, so that a colored reproduced image is obtained.
以上のように本発明をセグメント記録に適用した場合に
は、より少ない補助ヘッドで可変速再生時にカラー画像
が得られる。As described above, when the present invention is applied to segment recording, color images can be obtained during variable speed reproduction with fewer auxiliary heads.
発明の効果
以上詳述したように、本発明によれば記録時に簡単な信
号処理をすることにより線順次で記録した色信号のクロ
ストークの悪影響を軽減することができる。また、セグ
メント記録の場合特殊再生時に比較的簡単に良好な色を
つけることができる。Effects of the Invention As detailed above, according to the present invention, by performing simple signal processing during recording, it is possible to reduce the adverse effects of crosstalk of color signals recorded line-sequentially. Furthermore, in the case of segment recording, it is relatively easy to add good colors during special playback.
第１図は本発明の一実施例方法の入力信号と記録信号の
関係図、第２図は本発明の一実施例方法の記録パターン
図、第３図は従来の記録方法の入力信号と記録信号の関
係図、第４図は従来の記録方法の記録パターン図である
。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
２ ４ ６ 、？ １０八−立＝
ニエ一二ゴロ二二二≧ご一セー（ｂ）
Ｂ Ｙ２ ＣＩ Ｙａ Ｃ２４Ｙ６ Ｃ１７
Ｙａ Ｃ２ｕｌ ＹｌＯＣ＋ｕ第２図FIG. 1 is a diagram showing the relationship between input signals and recording signals in a method according to an embodiment of the present invention, FIG. 2 is a recording pattern diagram according to a method according to an embodiment of the present invention, and FIG. 3 is a diagram showing input signals and recording signals in a conventional recording method. The signal relationship diagram, FIG. 4, is a recording pattern diagram of a conventional recording method. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 4 6 ? 108-tachi=
Nie 12 Goro 222 ≧ Goichisee (b) B Y2 CI Ya C24Y6 C17
Ya C2ul YlOC+uFigure 2
Claims (3)
する時間軸伸長処理により２チャンネルに分割するステ
ップと、比較的狭帯域の第１および第２の色信号を線順
次色信号とした後時間軸圧縮するステップと、上記伸長
輝度信号に上記圧縮線順次色信号を時間軸多重するステ
ップと、上記２チャンネルの時間軸多重信号を２トラッ
クに並列に同時記録するステップを含む映像信号記録方
法であって、上記２トラック間で第１の色信号同志、第
２の色信号同志が隣接するように記録することを特徴と
する映像信号記録方法。(1) A step of dividing a relatively wide-band luminance signal into two channels by time-axis expansion processing using a horizontal scanning period as a unit, and converting the relatively narrow-band first and second color signals into line-sequential color signals. Video signal recording including the step of post-time axis compression, the step of time axis multiplexing the compressed line sequential color signal on the expanded luminance signal, and the step of simultaneously recording the two channels of time axis multiplexed signals in parallel on two tracks. A video signal recording method, characterized in that recording is performed so that the first color signals and the second color signals are adjacent to each other between the two tracks.
るステップにおいて、第１および第２の色信号を区別す
る識別信号を水平帰線期間に挿入記録するステップを含
むことを特徴とする特許請求の範囲第１項記載の映像信
号記録方法。(2) The step of time-axis multiplexing the compressed line-sequential color signal on the expanded luminance signal is characterized by including the step of inserting and recording an identification signal for distinguishing the first and second color signals into the horizontal retrace period. A video signal recording method according to claim 1.
する時間軸伸長処理により２チャンネルに分割するステ
ップと、比較的狭帯域の第１および第２の色信号を線順
次色信号とした後時間軸圧縮するステップと、上記伸長
輝度信号に上記圧縮線順次色信号を時間軸多重するステ
ップとを含み、上記２チャンネルの時間軸多重信号を２
トラックに並列同時記録する際に上記２トラック間で第
１の色信号同志、第２の色信号同志が隣接するように記
録する映像信号記録方法であって、セグメント記録方式
を採用し、並列記録するトラック間のガードバンド幅よ
りも異なるセグメントを記録したトラック間のガードバ
ンド幅を大として記録することを特徴とする映像信号記
録方法。(3) A step of dividing a relatively wide-band luminance signal into two channels by time-axis expansion processing using a horizontal scanning period as a unit, and converting the relatively narrow-band first and second color signals into line-sequential color signals. and a step of time-axis multiplexing the compressed line-sequential color signal on the expanded luminance signal.
A video signal recording method in which the first color signal and the second color signal are recorded adjacent to each other between the two tracks when simultaneously recording in parallel on the tracks, the segment recording method is adopted, and parallel recording is performed. A video signal recording method characterized in that recording is performed with a guard band width between tracks in which different segments are recorded being larger than a guard band width between tracks.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61062295A JPS62219892A (en) | 1986-03-20 | 1986-03-20 | Method for recording video signal |
| DE87102244T DE3787184T2 (en) | 1986-02-18 | 1987-02-17 | Video signal recording method and device for field recording. |
| KR1019870001285A KR900007470B1 (en) | 1986-02-18 | 1987-02-17 | The method of recording video signal and apparatus for video signal |
| EP87102244A EP0234483B1 (en) | 1986-02-18 | 1987-02-17 | Video signal recording method and apparatus for field-segment recording |
| CN87100725.8A CN1005523B (en) | 1986-02-18 | 1987-02-18 | Video signal recording method and recording and/or playback apparatus |
| US07/344,513 US4910605A (en) | 1986-02-18 | 1989-04-26 | Video signal recording method and apparatus for field-segment recording |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61062295A JPS62219892A (en) | 1986-03-20 | 1986-03-20 | Method for recording video signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62219892A true JPS62219892A (en) | 1987-09-28 |
Family
ID=13195980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61062295A Pending JPS62219892A (en) | 1986-02-18 | 1986-03-20 | Method for recording video signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62219892A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104095A (en) * | 1988-10-12 | 1990-04-17 | Sony Corp | Recorder for video disk |
| JPH02180492A (en) * | 1988-12-29 | 1990-07-13 | Sony Corp | Video disk recording system and reproducing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838091A (en) * | 1981-08-12 | 1983-03-05 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method and device for recording and reproducing wide band signal |
| JPS6094591A (en) * | 1983-10-28 | 1985-05-27 | Matsushita Electric Ind Co Ltd | Recording and reproduction device of video signal |
| JPS60214693A (en) * | 1984-04-11 | 1985-10-26 | Matsushita Electric Ind Co Ltd | Recording and reproducing method of video signal |
-
1986
- 1986-03-20 JP JP61062295A patent/JPS62219892A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838091A (en) * | 1981-08-12 | 1983-03-05 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Method and device for recording and reproducing wide band signal |
| JPS6094591A (en) * | 1983-10-28 | 1985-05-27 | Matsushita Electric Ind Co Ltd | Recording and reproduction device of video signal |
| JPS60214693A (en) * | 1984-04-11 | 1985-10-26 | Matsushita Electric Ind Co Ltd | Recording and reproducing method of video signal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02104095A (en) * | 1988-10-12 | 1990-04-17 | Sony Corp | Recorder for video disk |
| JPH02180492A (en) * | 1988-12-29 | 1990-07-13 | Sony Corp | Video disk recording system and reproducing device |
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