JPS6295082A - Recording and reproducing device for video signal - Google Patents

Recording and reproducing device for video signal

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Publication number
JPS6295082A
JPS6295082A JP60236058A JP23605885A JPS6295082A JP S6295082 A JPS6295082 A JP S6295082A JP 60236058 A JP60236058 A JP 60236058A JP 23605885 A JP23605885 A JP 23605885A JP S6295082 A JPS6295082 A JP S6295082A
Authority
JP
Japan
Prior art keywords
signal
vertical synchronization
video signal
recording
synchronization 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
JP60236058A
Other languages
Japanese (ja)
Inventor
Shigeru Awamoto
繁 粟本
Tatsuji Sakauchi
達司 坂内
Kiyoshi Sasaki
清志 佐々木
Mitsuo Chiba
千葉 光雄
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 JP60236058A priority Critical patent/JPS6295082A/en
Publication of JPS6295082A publication Critical patent/JPS6295082A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To reduce a video signal having high picture quality by shifting a vertical synchronizing signal by the phase difference of the vertical synchronizing signal and a reproducing vertical synchronizing signal by extending a time base of a video signal to (n) times, inserting the vertical synchronizing signal, dividing into (n) pieces of a track to record, assemble and edit them. CONSTITUTION:During recording, the time base of the video signal is extended to two times, during the period of the vertical synchronizing signal from the first field to the fourth field, the vertical synchronizing signals of respectively different forms in sequence are inserted to become the recording video signal of two channels and a sylinder and a capstan are in phase synchronized with the control signal 17 of two frame period synchronizing in phase with the vertical synchronizing signal of the recording video signal to record the recording video signal. At the times of assembling and editing, if two fields are dislocated as a reproducing vertical synchronizing signal detecting pulse 18, a system shifts the vertical synchronizing signal of the recording video signal by two fields and a vertical synchronizing signal detecting pulse 16 has the same phase as the reproducing vertical synchronizing signal detecting pulse 18.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は広帯域の映像信号を時間軸伸長して複数個のト
ラックに分割して記録し再生する映像信号の記録再生装
置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video signal recording and reproducing apparatus that expands the time axis of a wideband video signal, divides it into a plurality of tracks, records and reproduces the same.

従来の技術 第2図は、映像信号をn倍に時間軸伸長して1フィール
ド単位をn個のトラックにA及びB一対のそれぞれのチ
ャンネルの回転マルチへノドを用いて磁気テープ上に記
録再生する場合の磁気テープ上の記録パターンである。
Conventional technology Figure 2 shows a method of expanding the time axis of a video signal by n times and recording and reproducing one field unit onto a magnetic tape using a rotary multi-node for each of a pair of channels A and B on n tracks. This is the recording pattern on the magnetic tape when

第2図において、1は磁気テープ、2汀映像信号の記録
トラックである。第Aijトラックは、第】番目のフレ
ームの第iチャンネルの記録映像信号iAのマルチヘッ
ドの第iチャンネルヘッドAを用いて磁気テープ上に記
録した記録トラックである。第Bijトランクについて
も同様である。
In FIG. 2, 1 is a magnetic tape, and 2 is a recording track for a video signal. The Aij-th track is a recording track where the recorded video signal iA of the i-th channel of the ]-th frame is recorded on the magnetic tape using the i-th channel head A of the multi-head. The same applies to the Bij-th trunk.

たとえば、第A11から第A11ラツクは、Aのn個の
チャンネルの回転マルチヘッド全層いて1フィールド期
間内で同時刻に記録されたトラックであり、第1チVン
ネルヘ、ドA1  は、第1フレームの第1フィールド
期間内では第A11トラツクを第2フレームの第1フィ
ールドの期間内では第A1゜トラックを記録する。また
、1トラツク内には、N/2 n個の水平走査期間の記
録映像信号が記録される。ここでNは1フレーム内の水
平走査数(NTSC−525、PAL/SECAM−6
25,高品位−1125)、nは1フィールド期間内に
記録されるトラック数である。
For example, tracks A11 to A11 are tracks recorded at the same time within one field period by all layers of the rotating multi-heads of n channels of A; The A11th track is recorded within the first field period of the frame, and the A1° track is recorded within the first field period of the second frame. Furthermore, recorded video signals of N/2n horizontal scanning periods are recorded within one track. Here, N is the number of horizontal scans in one frame (NTSC-525, PAL/SECAM-6
25, high quality - 1125), n is the number of tracks recorded within one field period.

以後簡単のためN=1125.n:2  として説明す
る。
From now on, for simplicity, N=1125. This will be explained assuming that n:2.

第3図は、上記の場合のA1 チャンネルへノドを用い
て記録する記録映像信号の水平同期信号と垂直同期信号
及び垂直同期信号検出パルス(垂直同期信号のはいって
いる水平同期区間とする)を示す波形図である。第3図
において3は水平同期信号、4は垂直同期信号、5は垂
直同期信号検出パルスである。第2図で示したとおり、
1フイー+425     。
Figure 3 shows the horizontal synchronization signal, vertical synchronization signal, and vertical synchronization signal detection pulse (the horizontal synchronization period in which the vertical synchronization signal is included) of the recording video signal recorded using the gutter on the A1 channel in the above case. FIG. In FIG. 3, 3 is a horizontal synchronizing signal, 4 is a vertical synchronizing signal, and 5 is a vertical synchronizing signal detection pulse. As shown in Figure 2,
1 fee + 425.

ルド内の記録映像信号の水平走査数は一、−H′Cりる
ため垂直同期信号検出パルス5ごとの水平走査数が28
1Hと282Hの場合があり、水平同期信号と垂直同期
信号の位相関係は、4フィールドで1つの単位を構成し
ている。
The number of horizontal scans of the recorded video signal in the field is 1, and the number of horizontal scans for every 5 vertical synchronizing signal detection pulses is 28 because -H'C is
There are cases of 1H and 282H, and the phase relationship between the horizontal synchronization signal and the vertical synchronization signal is such that four fields constitute one unit.

記録装置において、上記4フィールドで1単位を構成す
る映像信号を、T B C%、有する。一般的な映像信
号記録再生装置で記録再生する場合のタイミングダイヤ
グラムを第4図に示す。6は内部基準垂直同期信号、7
は内部基準垂直同期信号検出パルス、8は内部基準制御
信号である。
The recording device has a video signal of T B C%, which constitutes one unit of the four fields. FIG. 4 shows a timing diagram for recording and reproducing with a general video signal recording and reproducing apparatus. 6 is an internal reference vertical synchronization signal, 7
8 is an internal reference vertical synchronization signal detection pulse, and 8 is an internal reference control signal.

記録時、人力映像信号の第1フィールドから第4フィー
ルドの垂直同期信号期間にそれぞれ形状が順序的に異な
る垂直同期信号全挿入して記録映像信号とし、前記垂直
同期信号に位相同期した2フィールド周期の制御信号と
シリンダー及びキャプスタンの回転検出パルスとを同期
させ、記録映像信号全記録する。同時に、磁気テープの
長手方向に沿うコントロールトラ、りには、前記制御信
号を記録する。
During recording, all vertical synchronization signals having different shapes are sequentially inserted into the vertical synchronization signal periods of the first to fourth fields of the human-powered video signal to form a recorded video signal, and a two-field period is synchronized in phase with the vertical synchronization signal. The control signal and the rotation detection pulse of the cylinder and capstan are synchronized, and all recorded video signals are recorded. At the same time, the control signal is recorded on a control track along the longitudinal direction of the magnetic tape.

再生時は、内部基準同期信号発生回路から、内部基準垂
直同期信号6.内部基準垂直同期信号検出パルス7、内
部基準水平同期信号、内部基準クロック信号及び内部基
準垂直同期信号に位相同期した2フィールド周期の内部
基準制御信号8とを得て、前記内部基準制御信号8とを
映像信号記録再生装置のシリンダーの回転検出パルスと
を位相同期させシリンダーを制御し、前記記録時に記録
した制御信号を再生して再生制御信号としたものと、前
記内部基準制御信号とを位相同期させキャプスタンを制
御して、再生映像信号を得る。
During playback, the internal reference vertical synchronization signal 6. is generated from the internal reference synchronization signal generation circuit. Obtain an internal reference vertical synchronization signal detection pulse 7, an internal reference horizontal synchronization signal, an internal reference clock signal, and an internal reference control signal 8 with a 2-field period phase-synchronized with the internal reference vertical synchronization signal. The cylinder is controlled by phase-synchronizing the rotation detection pulse of the cylinder of the video signal recording and reproducing device, and the control signal recorded at the time of recording is reproduced as a reproduction control signal, and the internal reference control signal is phase-synchronized. control the capstan to obtain a playback video signal.

アセンブル編集を行なう場合、上記再生時において内部
基準垂直同期信号6のかわりにアセンブル編集で挿入し
ようとする記録映像信号から分離した垂直同期信号を用
いて、上記再生時と同様の方法で記録映像信号と再生映
像信号を位相同期させておき、アセンブル点から記録映
像信号を記録して行く。
When performing assemble editing, the recorded video signal is processed in the same manner as during the above playback, using a vertical synchronization signal separated from the recorded video signal to be inserted in the assemble edit instead of the internal reference vertical synchronization signal 6 during playback. and the reproduced video signal are synchronized in phase, and the recording video signal is recorded from the assembly point.

発明が解決しようとする問題点 第5図にアセンブル編集を行なう場合のタイミングダイ
ヤグラム金示す。9は記録映像信号から分離しまた垂直
同期信号、10は垂直同期信号検出パルス、11は垂直
同期信号9に位相同期した制御信号、12は再生垂直同
期信号、13は再生垂直同期信号検出パルス、14は再
生垂直同期信号検出パルス13と位相が2フィールド異
なった再生垂直同期信号検出パルス、15は再生垂直向
1υ1信号検出パルスが14の位相であったときU′こ
おける、アセンブル編集後の再生垂直同期信号検出パル
スである。
Problems to be Solved by the Invention FIG. 5 shows a timing diagram when performing assemble editing. 9 is a vertical synchronization signal separated from the recorded video signal, 10 is a vertical synchronization signal detection pulse, 11 is a control signal phase-synchronized with the vertical synchronization signal 9, 12 is a reproduced vertical synchronization signal, 13 is a reproduction vertical synchronization signal detection pulse, 14 is a reproduction vertical synchronization signal detection pulse whose phase is two fields different from that of the reproduction vertical synchronization signal detection pulse 13, and 15 is a reproduction after assembly editing that occurs when the reproduction vertical 1υ1 signal detection pulse has the phase of 14. This is a vertical synchronization signal detection pulse.

第5図に示す従来例では、制御信号11と再生垂直同期
信号12は位相同期してはいるが、映像信号に挿入した
垂直同期信号が4フィールド周期であるにもかかわらず
、映像信号とともに記録(〜である前記再生制御信号と
前記制御信号11ともに2フィールド周期の信号である
ため、再生開始時の記録再生装置におけるシリンダーと
磁気テープの相対位置のずれによって、制御信号11の
位相に対して再生垂直同期信号検出パルス13及び14
となる2つの位相モードが生じうる。
In the conventional example shown in FIG. 5, although the control signal 11 and the reproduced vertical synchronization signal 12 are phase-synchronized, the vertical synchronization signal inserted into the video signal is recorded with the video signal even though the period is 4 fields. (Since both the playback control signal and the control signal 11 are signals with a two-field period, the phase of the control signal 11 may be affected by the deviation in the relative position between the cylinder and the magnetic tape in the recording/playback device at the start of playback.) Reproduction vertical synchronization signal detection pulses 13 and 14
Two phase modes can occur.

再生同期信号検出パルスが13の場合は問題ないが、入
力垂直同期信号検出パルス1Qと再生映像信号との位相
が約2フィールドずれてロックし、再生同期信号検出パ
ルス14となった場合、アセンブル点からアセンブル編
集を行なうと、その再生映像信号はV、→v2→■3→
v4→v1の順序関係が失なわれ、再生垂直同期信号検
出パルス15に示すようになり、それを用いて制御する
TBCの動作に不都合が生じる。
There is no problem if the playback synchronization signal detection pulse is 13, but if the input vertical synchronization signal detection pulse 1Q and the playback video signal are locked with a phase shift of about 2 fields and the playback synchronization signal detection pulse becomes 14, the assemble point When you assemble and edit from
The order relationship of v4→v1 is lost, as shown in the reproduced vertical synchronizing signal detection pulse 15, which causes problems in the operation of the TBC controlled using it.

制御信号の周期を垂直同期信号の周期と等し7くすれば
、上記のような問題は生じないが、記録再生装置の制御
系が複雑になり、また制御系の応答速度も遅くなるため
高画質の映像信号を再生することができなくなり問題で
ある。
If the period of the control signal is made equal to the period of the vertical synchronization signal, which is 7, the above problem will not occur, but the control system of the recording and reproducing device will become complicated, and the response speed of the control system will also be slow, resulting in high performance. This is a problem because it becomes impossible to reproduce the image quality video signal.

本発明はこのような問題を解決した映像信号の記録再生
装置を提供することを目的とする。
An object of the present invention is to provide a video signal recording and reproducing apparatus that solves these problems.

問題点を解決するための手段 本発明は、映像信号をn倍に時間軸伸長して第1フィー
ルドから第2nフィールドの垂直同期信号期間にそれぞ
れ形状が順序的に異なる垂直同期信号を挿入し、n個の
トラックに分割して記録し、同時に前記垂直同期信号に
位相同期した制御信号を磁気テープの長手方向に記録し
、アセンブル編集する際に、記録映像信号に挿入した垂
直同期信号に前記制御信号を再生して得られる再生制御
信号を同期させて前記映像信号を再生し、この再生映像
信号から再生垂直同期信号を検出し、前記垂直同期信号
と前記再生垂直同期信号の位相差を検出して、前記位相
差分だけ前記垂直同期信号をシフトさせて前記再生垂直
同期信号と同一の位相にし、アセンブル編集した後も垂
直同期信号の前記順序関係を保持する映像信号の記録再
生装置である。
Means for Solving the Problems The present invention expands the time axis of a video signal by n times and inserts vertical synchronization signals having sequentially different shapes into the vertical synchronization signal periods of the first field to the second n field. Recording is divided into n tracks, and at the same time a control signal that is phase-synchronized with the vertical synchronization signal is recorded in the longitudinal direction of the magnetic tape, and when assembling and editing, the control signal is added to the vertical synchronization signal inserted into the recorded video signal. Reproducing the video signal by synchronizing a reproduction control signal obtained by reproducing the signal, detecting a reproduced vertical synchronization signal from the reproduced video signal, and detecting a phase difference between the vertical synchronization signal and the reproduction vertical synchronization signal. The video signal recording and reproducing apparatus shifts the vertical synchronizing signal by the phase difference to have the same phase as the reproduced vertical synchronizing signal, and maintains the order relationship of the vertical synchronizing signals even after assembly and editing.

作  用 本発明は前記した構成によシ、再生開始時のシリンダー
と磁気テープの相対位置が記録時と異なるために、例え
ば2フィールド周期の制御信号と2nフィールド周期の
再生垂直同期信号との位相関係に2フィールドの整数倍
の位相ずれが生じた場合、その位相差を検出して前記制
御信号をシフトさせることにより、前記再生開始時のシ
リンダーと磁気テープの相対位置がいかなる位置にあっ
ても記録映像信号の前記垂直同期信号と再生映像信号の
前記再生垂直同期信号との位相全同期させることができ
、どの時点からでもアセンブル編集が行なえる。また通
常の2フィールド周期の制御信号で2nフィールド単位
の映像信号を記録再生するので、複雑な制御系を必要と
せず、応答速度も速く安定性がよい。
Effect of the Invention The present invention has the above-described configuration, but since the relative positions of the cylinder and the magnetic tape at the start of reproduction are different from those at the time of recording, the phase of the control signal with a 2-field period and the reproduction vertical synchronization signal with a 2n-field period, for example, is If a phase shift of an integer multiple of two fields occurs in the relationship, by detecting the phase difference and shifting the control signal, no matter what the relative position of the cylinder and magnetic tape is at the time of the start of playback. The vertical synchronization signal of the recorded video signal and the reproduced vertical synchronization signal of the reproduced video signal can be completely synchronized in phase, and assembling and editing can be performed from any point in time. Furthermore, since the video signal is recorded and reproduced in units of 2n fields using a normal control signal having a period of 2 fields, a complicated control system is not required, and the response speed is fast and stability is good.

実施例 第1図は本発明の実施例の映像信号の記録再生装置にお
けるタイミングダイヤグラムである。同図において、1
6は垂直同期信号検出パルス、17は記録時の2フィー
ルド周期の制御信号、18及び20は再生された映像信
号から検出した再生垂直同期信号検出パルス、19及び
21はそれぞれ再生垂直同期検出パルスが18及び2o
の場合の再生制御信号、22及び24はそれぞれ再生垂
直同期信号検出パルス18及び20から4フィールド周
期の検出パルスのうち第1番目のものを抜き出して作っ
たリセットパルス、23及び25は記録制御信号17全
その立ち上がりをエツジとして2分の1に分周し、それ
ぞれリセットパルス22及び24でリセットした位相検
出信号である。
Embodiment FIG. 1 is a timing diagram of a video signal recording and reproducing apparatus according to an embodiment of the present invention. In the same figure, 1
Reference numeral 6 indicates a vertical synchronization signal detection pulse, 17 indicates a two-field cycle control signal during recording, 18 and 20 indicate reproduction vertical synchronization signal detection pulses detected from the reproduced video signal, and 19 and 21 indicate reproduction vertical synchronization detection pulses, respectively. 18 and 2o
Reproduction control signals 22 and 24 are reset pulses produced by extracting the first detection pulse of 4 field periods from reproduction vertical synchronization signal detection pulses 18 and 20, respectively; 23 and 25 are recording control signals This is a phase detection signal whose frequency is divided by half using the rising edge of 17 as an edge and reset by reset pulses 22 and 24, respectively.

以上のように構成された本実施例の映像信号の記録再生
装置について映像信号1フレームの水平走査数が112
5H1記録時に2倍に映像信号を時場合について以下そ
の動作を説明する。
Regarding the video signal recording and reproducing apparatus of this embodiment configured as described above, the number of horizontal scans of one frame of the video signal is 112.
The operation will be described below when the video signal is doubled during 5H1 recording.

記録時は、映像信号を2倍に時間軸伸長し、第6図に示
すような第1フィールドから第4フィールドの垂直同期
信号期間(垂直同期信号検出パルス期間)にそれぞれ形
状が順序的に異なる垂直同期信号を挿入して2チヤンネ
ルの記録映像信号とし、この記録映像信号の垂直同期信
号と位相同期した2フレ一ム周期の制御信号17にシリ
ンダー及びキャブスタンを位相同期させて記録映像信号
全記録する。
During recording, the time axis of the video signal is expanded twice, and the shape of each vertical synchronization signal period (vertical synchronization signal detection pulse period) from the first field to the fourth field is sequentially different as shown in Fig. 6. A vertical synchronization signal is inserted to obtain a two-channel recording video signal, and the cylinder and cab stan are phase-synchronized with the control signal 17 with a two-frame period, which is phase-synchronized with the vertical synchronization signal of this recording video signal. Record.

アセンブル編集時は、まず制御信号17に7リンダー及
びキャプスタンを位相同期させて映像信号を再生し、ア
センブル点から記録映像信号を挿入していくわけである
が、4フィールドで1単位を構成する映像信号を2フィ
ールド周期の制御信号と再生制御信号を位相同期させて
再生するため、再生開始時のシリンダーと磁気テープの
位置関係によって、垂直同期信号検出パルス16に対し
て再生垂直同期信号検出パルス18及び2002つの位
相モードが生じうる。ただしどちらの位相モードにおい
ても、再生制御信号19及び21は制御信号17と同位
相になっている。
During assembly editing, first the 7linder and capstan are phase-synchronized with the control signal 17 to reproduce the video signal, and then the recorded video signal is inserted from the assemble point, and one unit is made up of four fields. In order to reproduce the video signal by synchronizing the phase of the 2-field period control signal and the reproduction control signal, the reproduction vertical synchronization signal detection pulse is determined relative to the vertical synchronization signal detection pulse 16 depending on the positional relationship between the cylinder and the magnetic tape at the start of reproduction. Two phase modes can occur: 18 and 200. However, in either phase mode, the reproduction control signals 19 and 21 are in the same phase as the control signal 17.

再生垂直同期信号検出パルスの位相が、垂直同期信号検
出パルス16に対して再生垂直同期信号検出パルス18
のように2フィールドずれているとき、制御信号17を
その立ち下がりエツジで2分の1に分周したものを再生
垂直同期信号検出パルス18の”Plに選択したリセッ
トパルス22でリセットしたところの位相検出信号23
を垂直同期信号検出パルス16の■R1パルスでラッチ
すると、そのラッチ出力はHigh レベルとなる。ラ
ッチ出力がHighレベルであること全検出すると、シ
ステムは記録映像信号の垂直同期信号を2フィールド分
77トして、垂直同期信号検出パルス16が再生垂直同
期信号検出パルス18と同じ位相になるようにする。
The phase of the reproduced vertical synchronization signal detection pulse is the same as that of the reproduction vertical synchronization signal detection pulse 18 with respect to the vertical synchronization signal detection pulse 16.
When there is a two-field shift as shown in the figure, the control signal 17 is divided in half at its falling edge and reset by the reset pulse 22 selected as "Pl" of the reproduction vertical synchronization signal detection pulse 18. Phase detection signal 23
When latched by the R1 pulse of the vertical synchronization signal detection pulse 16, the latch output becomes High level. When the system detects that the latch output is at a high level, the system increments the vertical synchronization signal of the recorded video signal by two fields so that the vertical synchronization signal detection pulse 16 has the same phase as the reproduced vertical synchronization signal detection pulse 18. Make it.

再生垂直同期信号検出パルスが20のような位相である
とき、リセットパルスば24、位相検出信号は26のよ
うになり、位相検出信号25を垂直同期信号検出パルス
16の■R1パルスでラッチすると、そのラッチ出力は
Lowレベルとなる。
When the reproduced vertical synchronization signal detection pulse has a phase such as 20, the reset pulse 24 and the phase detection signal become 26, and when the phase detection signal 25 is latched with the R1 pulse of the vertical synchronization signal detection pulse 16, The latch output becomes Low level.

この場合は垂直同期信号検出パルス16と再生垂直同期
信号検出パルス20の位相が合っていることになり、記
録映像信号の垂直同期信号の位相ソフトは行なわれない
。そして以上の動作終了後、アセンブル編集を開始する
In this case, the phases of the vertical synchronizing signal detection pulse 16 and the reproduced vertical synchronizing signal detecting pulse 20 match, and the phase softening of the vertical synchronizing signal of the recorded video signal is not performed. After the above operations are completed, assemble editing is started.

なお本実施例において、リセットパルスは■P1でなく
ても、再生垂直同期信号に位相同期し、記録垂直同期信
号16との2フィールドの位相差テ検出できるものであ
れば何でもよい。
In this embodiment, the reset pulse need not be P1, but any reset pulse may be used as long as it is phase-synchronized with the reproduction vertical synchronization signal and can detect a two-field phase difference with the recording vertical synchronization signal 16.

また本実施例は映像信号′f:2倍に時間軸伸長する場
合について説明したが、3倍以上の場合も同様の方法で
記録垂直同期信号と再生垂直同期信号の位相差をなくす
ことができる。
Furthermore, in this embodiment, the case where the time axis of the video signal 'f is expanded by 2 times has been explained, but even if the time axis is expanded by 3 times or more, the phase difference between the recording vertical synchronization signal and the reproduction vertical synchronization signal can be eliminated using the same method. .

さらに記録制御信号及び再生制御信号を2フィールド周
期としたが、それらを1フィールド周期として、位相差
検出を1フィールドごとに行なってもよい。
Further, although the recording control signal and the reproduction control signal have a period of two fields, they may have a period of one field, and phase difference detection may be performed for each field.

発明の詳細 な説明したように、本発明によれば、映像信号をn倍に
時間軸伸長して第1フィールドから第2nフィールドの
垂直同期信号期間にそれぞれ形状が順序的に異なる垂直
同期信号を挿入し、n個のトランクに分割して記録し、
同時に前記映像信号に位相同期した制御信号を磁気テー
プの長手方向に記録し、アセンブル編集する際に、記録
映像信号に同期させた前記垂直同期信号に前記磁気テー
プの長手方向に記録した制御信号を再生して得られる再
生制御信号を同期させて前記映像信号を再生し、この再
生映像信号から再生垂直同期信号を検出し、前記垂直同
期信号と前記再生垂直同期信号の位相差を検出して、前
記位相差分だけ前記垂直同期信号をシフトさせて前記再
生垂直同期信号と同一の位相てし、アセンブル編集した
後も垂直同期信号の前記順序関係を保つことができるの
で、再生開始時の磁気テープとシリンダーの位置関係を
考慮する必要がない。
As described in detail, according to the present invention, a video signal is expanded in time by n times, and vertical synchronization signals having sequentially different shapes are generated in vertical synchronization signal periods from the first field to the second n field. Insert it, divide it into n trunks and record it,
At the same time, a control signal that is phase-synchronized with the video signal is recorded in the longitudinal direction of the magnetic tape, and when assembling and editing, the control signal recorded in the longitudinal direction of the magnetic tape is added to the vertical synchronization signal that is synchronized with the recorded video signal. reproducing the video signal by synchronizing a reproduction control signal obtained by reproduction, detecting a reproduction vertical synchronization signal from the reproduction video signal, detecting a phase difference between the vertical synchronization signal and the reproduction vertical synchronization signal, By shifting the vertical synchronization signal by the phase difference to make it have the same phase as the reproduced vertical synchronization signal, the order relationship of the vertical synchronization signals can be maintained even after assembly and editing. There is no need to consider the positional relationship of the cylinders.

また、記録再生装置の制御系ば2nフィールド単位の映
像信号を通常の2フィールド周期のl+1 ’1’(信
号で記録再生することができるので、複雑な制御系を必
要としない。また制御系の応答速度も、2nフィールド
周期の制御信号でコントロールするよりも速く安定性が
よいため、高画質の映像信号を再生することができる。
In addition, since the control system of the recording/reproducing device can record and reproduce video signals in units of 2n fields using l+1 '1' (signals) with a normal 2-field period, a complicated control system is not required. The response speed is also faster and more stable than when controlled by a control signal with a 2n field period, so it is possible to reproduce a high-quality video signal.

上記の様に映像信号をn倍に時間軸伸長してn個のトラ
、ツクに分割して記録再生する映像信号の記録再生装置
の実用にあたっては極めてその効果は大きい。
As described above, the video signal recording and reproducing apparatus which expands the time axis of the video signal by n times and divides it into n sections for recording and reproducing is very effective in practical use.

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

第1図は本発明の映像信号の記録再生装置の実姉例のタ
イミングダイヤグラム、第2図は映像信号in倍に時間
軸伸長してnチャンネルに分割した記録パターン図、第
3図は記録映像信号の同期信号タイミングダイヤグラム
、第4図は映像信号記録再生タイミングダイヤグラム、
第5図はアセンブル編集時タイミングダイヤグラム、第
6図は本実施例における垂直同期信号波形図である。 1・・・・・・磁気テープ、2・・・・・・映像信号記
録トラック、3・・・・・・水平同期信号、4・・・・
・・垂直同期信号、5・・・・垂直同期信号検出パルス
、6・・・−・内部基準垂直同期信号、了・・・・・内
部基準垂直同期信号検出パルス、8・−・・・・内部基
準制御信号、9・・・・・・垂直同期信号、1o・・・
・・・垂直同期信号検出パルス、11・・・・制御信号
、12・・・・・再生垂直同期信号、13゜14.15
・・・・再生垂直同期信号検出パルス、16・・・・・
・垂直同期信号検出パルス、17・・・・・・制御信号
、18 、20・・・・再生垂直同期信号検出パルス、
19.21・・・再生垂直同期信号、22.24・・°
・・リセノトハルス、23.25・−・位相検出信代理
人の氏名 弁理士 中 尾 放 男 ほか1名第1図 ご 第 2 図 第4図 第5図 第6図
Fig. 1 is a timing diagram of an actual example of the video signal recording and reproducing device of the present invention, Fig. 2 is a recording pattern diagram of the video signal in which the time axis is expanded by in times and divided into n channels, and Fig. 3 is a recording pattern diagram of the recorded video signal. 4 is a synchronization signal timing diagram, and Fig. 4 is a video signal recording/playback timing diagram.
FIG. 5 is a timing diagram at the time of assembling and editing, and FIG. 6 is a vertical synchronization signal waveform diagram in this embodiment. 1...Magnetic tape, 2...Video signal recording track, 3...Horizontal synchronization signal, 4...
...Vertical synchronization signal, 5...Vertical synchronization signal detection pulse, 6...--Internal reference vertical synchronization signal, Complete...Internal reference vertical synchronization signal detection pulse, 8...-... Internal reference control signal, 9...Vertical synchronization signal, 1o...
... Vertical synchronization signal detection pulse, 11 ... Control signal, 12 ... Reproduction vertical synchronization signal, 13° 14.15
...Reproduction vertical synchronization signal detection pulse, 16...
・Vertical synchronization signal detection pulse, 17... Control signal, 18, 20... Reproduction vertical synchronization signal detection pulse,
19.21...Reproduction vertical synchronization signal, 22.24...°
...Lisenotohals, 23.25 --- Name of phase detection agent: Patent attorney Hiroshi Nakao and one other figure 1, figure 2, figure 4, figure 5, figure 6

Claims (1)

【特許請求の範囲】[Claims] 入力映像信号をn倍に時間軸伸長して、第1フィールド
から第2nフィールドの垂直同期信号期間にそれぞれ形
状が順序的に異なる垂直同期信号を挿入して記録映像信
号とし、単位時間あたりn個のトラックに分割して磁気
テープ上に記録すると同時に前記垂直同期信号に位相同
期した制御信号を前記磁気テープの長手方向に記録し、
アセンブル編集する際に、前記記録映像信号の垂直同期
信号に位相同期した制御信号に、前記磁気テープの長手
方向に記録した制御信号を再生して得られる再生制御信
号を同期させて前記映像信号を再生し、この再生映像信
号の前記第1フィールドから第2nフィールドの期間の
垂直同期信号を分離して再生垂直同期信号とし、前記垂
直同期信号と前記再生垂直同期信号との2フィールド単
位の位相差を検出して、前記位相差分だけ前記垂直同期
信号をシフトさせて前記再生垂直同期信号と同一の位相
にし、アセンブル編集した後も垂直同期信号の前記順序
関係を保持することを特徴とする映像信号の記録再生装
置。
The input video signal is time-expanded by n times, and vertical synchronization signals having sequentially different shapes are inserted into the vertical synchronization signal period of the 1st field to the 2nth field to form a recording video signal, and n times per unit time. recording on the magnetic tape into tracks, and at the same time recording a control signal in phase synchronization with the vertical synchronization signal in the longitudinal direction of the magnetic tape,
When assembling and editing, a playback control signal obtained by playing back a control signal recorded in the longitudinal direction of the magnetic tape is synchronized with a control signal that is phase-synchronized with a vertical synchronization signal of the recorded video signal. The vertical synchronizing signal of the period from the first field to the second nth field of the reproduced video signal is separated to obtain a reproduced vertical synchronizing signal, and the phase difference in units of two fields between the vertical synchronizing signal and the reproduced vertical synchronizing signal is determined. , the vertical synchronization signal is shifted by the phase difference to have the same phase as the reproduced vertical synchronization signal, and the order relationship of the vertical synchronization signals is maintained even after assembly and editing. recording and reproducing equipment.
JP60236058A 1985-10-22 1985-10-22 Recording and reproducing device for video signal Pending JPS6295082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60236058A JPS6295082A (en) 1985-10-22 1985-10-22 Recording and reproducing device for video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60236058A JPS6295082A (en) 1985-10-22 1985-10-22 Recording and reproducing device for video signal

Publications (1)

Publication Number Publication Date
JPS6295082A true JPS6295082A (en) 1987-05-01

Family

ID=16995113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60236058A Pending JPS6295082A (en) 1985-10-22 1985-10-22 Recording and reproducing device for video signal

Country Status (1)

Country Link
JP (1) JPS6295082A (en)

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