JPH0432391A - Field video image recorder - Google Patents

Field video image recorder

Info

Publication number
JPH0432391A
JPH0432391A JP2139431A JP13943190A JPH0432391A JP H0432391 A JPH0432391 A JP H0432391A JP 2139431 A JP2139431 A JP 2139431A JP 13943190 A JP13943190 A JP 13943190A JP H0432391 A JPH0432391 A JP H0432391A
Authority
JP
Japan
Prior art keywords
recording
signal
field
video
changeover
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
JP2139431A
Other languages
Japanese (ja)
Inventor
Hiroshi Shimoi
下井 弘
Tomoyuki Takeshita
智幸 武下
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 JP2139431A priority Critical patent/JPH0432391A/en
Publication of JPH0432391A publication Critical patent/JPH0432391A/en
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

PURPOSE:To surely reproduce a video image in the order of changeover sequentially by providing a field video image recording means and a 1/2 subtractor means interleaving a recording end signal into a half and outputting a reduction signal and using the reduction signal as a changeover command signal to a video image changeover means. CONSTITUTION:A 1/2 subtractor means 4 interleaving a recording end signal from a field video recording means 2 into a half and outputting a reduction signal is provided to the recorder. Thus, every time one field recording is finished, the outputted recording end signal 14 is interleaved to a half and the resulting reduction signal is outputted and since the reduction signal is a switching command signal 11 to the video changeover means 1, when a recording medium 3 thus recorded is reproduced in a single field, the data is reproduced in the order of changeover by the switching command signal 11. Thus, even when the recording medium 3 is reproduced in a single field, the data is reproduced in the order of changeover by the switching command signal 11.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、たとえば複数のカメラによる映像を時間順
次に切替えてフィールド記録する方式のタイムラプスV
TRなどに適用されるフィールド映像記録装置に関する
ものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a time lapse V, which is a field recording method in which images from a plurality of cameras are switched in time order and recorded in the field.
The present invention relates to a field video recording device applied to TR and the like.

[従来の技術] フィールド映像記録装置は、インターレース方式の映像
信号の奇数フィールドと偶数フィールドとを交互に記録
するものであり、以下、同期信号の一致した複数の映像
信号を順次切替えて、このフィールド映像記録装置に記
録する場合の記録内容に関して説明する。
[Prior Art] A field video recording device alternately records odd and even fields of an interlaced video signal. The recorded contents when recording on a video recording device will be explained.

第3図は従来のフィールド映像記録装置の構成を示すブ
ロック図であり、同図において、(1)は映像切替手段
で、複数の端子(1a)〜(1n)から入力される複数
個(N個)の映像信号1− nを外部からの切替指令信
号(11)により順次切替えて出力する。(2)はフィ
ールド映像記録手段で、端子(2a)を介して外部から
入力される記録指令信号(12)により上記映像切替手
段(1)から出力される切替映像信号(13)の1フィ
ールド分をテープなどの記録媒体(3)に記録し、その
記録が完了したとき記録完了信号(14)を出力する。
FIG. 3 is a block diagram showing the configuration of a conventional field video recording device. In the same figure, (1) is video switching means, and a plurality of (N The video signals 1-n of 1-n are sequentially switched and outputted by a switching command signal (11) from the outside. (2) is a field video recording means, which records one field of the switching video signal (13) output from the video switching means (1) in response to a recording command signal (12) inputted from the outside through a terminal (2a). is recorded on a recording medium (3) such as a tape, and when the recording is completed, a recording completion signal (14) is output.

この記録完了信号(14)が上記の切替指令信号(11
)となる。
This recording completion signal (14) is the switching command signal (11).
).

つぎに、上記構成の動作について説明する。Next, the operation of the above configuration will be explained.

いま、映像切替手段(1)が映像信号1に切替っている
段階で、4了(2a)からフィールド映像記録手段(2
)に記録指令信号(12)が印加されると、−上記映像
信号Iの1フィールド分が記録媒体(3)にフィールド
記録され、その記録が完了すると。
Now, when the video switching means (1) is switching to video signal 1, the field video recording means (2
), when the recording command signal (12) is applied to - one field of the video signal I is field recorded on the recording medium (3), and when the recording is completed.

フィールド映像記録手段(2)から出力される記録完了
信号(14)が映像切替手段(1)に人力されて、映像
信号2に切替わる。
A recording completion signal (14) output from the field video recording means (2) is manually input to the video switching means (1) and switched to the video signal 2.

以上のようにして、映像信号nまで順次フィールド記録
されると、映像信号lに戻り、以下同様にし、てフィー
ルド記録を繰り返す。
As described above, when the field recording is performed sequentially up to the video signal n, the recording returns to the video signal l, and the field recording is repeated in the same manner.

つぎに、上記のようなパターンの記録がなされた第4図
に示すような記録媒体(3)の再生動作について説明す
る。
Next, the reproduction operation of the recording medium (3) shown in FIG. 4 on which the pattern described above has been recorded will be explained.

一般にVTRなどの映像信号の記録再生装置において、
記録は映像信号の1フレーム中位でおこなわれ、スチル
再生は動きのある映像のブレを防ぐためにフィールド単
位で、か−)片フレームだCづのいわゆるシングルフィ
ールド再生がおこなわれている。
Generally, in video signal recording and reproducing devices such as VTRs,
Recording is performed in the middle of one frame of the video signal, and still playback is performed field by field, so-called single field playback, in which each frame is C.

そのシングルフィールド再生方式により、第4図に示す
記録媒体(3)の記録内容を再生すると、たとえば偶数
フィールドのみのシングルフィールド再生では、2B、
4B、6B、−・n B 。
When the recorded contents of the recording medium (3) shown in FIG. 4 are reproduced using the single field reproduction method, for example, in single field reproduction of only even fields, 2B,
4B, 6B, -・nB.

2B、・・・と再生され、IA、3A、5A、・・・(
n−1)A、IAがまったく再生されないことになる。
2B,... will be played, then IA, 3A, 5A,... (
n-1) A and IA will not be reproduced at all.

[発明が解決しようとする課題] 従来のフィールド映像記録装置は以上のように構成され
ているので、1フイールドごとに切替えられて記録され
た映像信号を一般的なシングルフィールド再生する際に
、1方のフィールドのみが再生され、他方のフィールド
がまったく再生されないという問題があった。
[Problems to be Solved by the Invention] Since the conventional field video recording device is configured as described above, when performing general single field playback of a video signal recorded by switching every field, it is difficult to The problem was that only one field would be played, and the other field would not be played at all.

この発明は上記のような問題点を解消するためになされ
たもので、順次切替えられて映像信号の記録された記録
媒体をシングルフィールド再生する場合、順次切替えら
れた順番で確実に再生することができるフィールド映像
記録装置を提供することを目的とする。
This invention was made to solve the above-mentioned problems, and when a recording medium on which video signals are recorded in a sequential manner is played back in a single field, it is not possible to reliably play back in the order in which the video signals were switched. The purpose is to provide a field video recording device that can.

[課題を解決するための手段] この発明に係るフィールド映像記録装置は、フィールド
映像記録手段より出力される記録完了信号を半分に間引
いた逓減信号を出力する2逓減手段を備えたことを特徴
とする。
[Means for Solving the Problems] A field video recording device according to the present invention is characterized in that it includes a doubling means for outputting a gradual reduction signal obtained by halving the recording completion signal outputted from the field video recording means. do.

[作用] この発明によれば、■フィールドの記録が完了するたび
に出力される記録完了信号を半分に間引いた逓減信号を
出力し、この逓減信号が映像切替手段への切替指令信号
となるため、このようにして記録された記録媒体をシン
グルフィールド再生すると、その切替指令信号により切
替えられた順番で再生ずることが可能となる。
[Function] According to the present invention, (1) a recording completion signal that is output every time recording of a field is completed is outputted as a gradually decreasing signal which is halved, and this decreasing signal becomes a switching command signal to the video switching means. When a recording medium recorded in this manner is reproduced in a single field, it becomes possible to reproduce the data in the order switched by the switching command signal.

[発明の実施例] 以下、この発明の一実施例を図面にもとづいて説明する
[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

第1Mはこの発明の一実施例によるフィールド映像記録
装置の構成を示すブロック図であり、同図において、(
4)は2逓減手段で、記録完了信号(14)を半分に間
引いて逓減13号を出力し、これを映像切替手段(1)
への切替指令信号(11)としだ点においてのみ第3図
の従来例と相違し、その他は第3図の従来例と同一であ
るため、該当部分に同一の符号を付して、それらの説明
を省略する。なお、上記2逓減手段(4)は双安定マル
チバイブレータを用いた回路から簡単に実現できるもの
であり、これは周知であるため、詳細については省略す
る。
1M is a block diagram showing the configuration of a field video recording device according to an embodiment of the present invention;
4) is a step-down means, which decimates the recording completion signal (14) in half and outputs step-down No. 13, which is sent to the video switching means (1).
It differs from the conventional example shown in Fig. 3 only in the switching command signal (11) and the beginning, and is otherwise the same as the conventional example shown in Fig. 3, so the corresponding parts are given the same reference numerals and The explanation will be omitted. Note that the above-mentioned doubling reduction means (4) can be easily realized from a circuit using a bistable multivibrator, and since this is well known, details thereof will be omitted.

つぎに、上記構成の動作について説明する。Next, the operation of the above configuration will be explained.

第2図は上記構成のフィールド映像記録装置により映像
信号1〜nが記録された記録媒体(3)の記録パターン
図であり、この記録媒体(3)には奇数フィールドにも
、偶数フィールドにも同じ映像信号が記録されている。
FIG. 2 is a recording pattern diagram of a recording medium (3) on which video signals 1 to n are recorded by the field video recording device having the above configuration. The same video signal is recorded.

したがって、この記録媒体(3)を、例えば偶数フィー
ルドについてシングルフィールド再生すると、IB、2
B、3B、・・・nB、IBといったように、記録時に
切替指令信号(11)により切替えられた順番に再生す
ることができる。
Therefore, when this recording medium (3) is reproduced, for example, in a single field for even fields, IB, 2
B, 3B, . . . nB, IB, etc., can be reproduced in the order switched by the switching command signal (11) at the time of recording.

[発明の効果] 以上のように、この発明によれば、1フィールドごとに
切替えられた映像信号を記録するフィールド映像記録装
置に記録完了信号を半分に間引く2逓減手段を追加する
ことにより、?フィールド、つまり、1フレームごとに
切替えられた映像信号を記録することが可能になり、そ
の結果、このフィールド映像記録装置によって記録され
た記録媒体をシングルフィールド再生した際にも、上記
切替指令信号により切替えられた順番で再生することが
できる。
[Effects of the Invention] As described above, according to the present invention, by adding a doubling means for thinning the recording completion signal in half to a field video recording device that records video signals switched for each field, ? It is now possible to record a video signal that is switched for each field, that is, for each frame, and as a result, even when a recording medium recorded by this field video recording device is played back in a single field, the switching command signal They can be played back in the switched order.

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

第1図はこの発明の一実施例によるフィールド映像記録
装置の構成を示すブロック図、第2図はフィールド映像
記録装置により映像信号が記録媒体に記録されたときの
記録パターン図、第3図は従来のフィールド映像記録装
置の構成を示すブロック図、第4図は従来のフィールド
映像記録装置により映像信号が記録媒体に記録されたと
きの記録パターン図である。 (1)・・・映像切替手段、(2)・・・フィールド映
像記録手段、(3)・・・記録媒体、(4)・・・2逓
減手段。 (11)・・・切替指令信号(逓減信号)。 なお、図中の同一符号は同一または相当部分を示す。
FIG. 1 is a block diagram showing the configuration of a field video recording device according to an embodiment of the present invention, FIG. 2 is a recording pattern diagram when a video signal is recorded on a recording medium by the field video recording device, and FIG. FIG. 4 is a block diagram showing the configuration of a conventional field video recording device, and is a recording pattern diagram when a video signal is recorded on a recording medium by the conventional field video recording device. (1)...Video switching means, (2)...Field video recording means, (3)...Recording medium, (4)...Double reduction means. (11)...Switching command signal (gradual decrease signal). Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] (1)外部からの切替指令信号により複数の映像信号を
順次切替えて出力する映像切替手段と、この映像切替手
段から出力される切替映像信号の1フィールド分を記録
し記録が完了したとき記録完了信号を出力するフィール
ド映像記録手段と、上記記録完了信号を半分に間引いて
逓減信号を出力する2逓減手段とを備え、上記逓減信号
を上記映像切替手段への切替指令信号とするように構成
したことを特徴とするフィールド映像記録装置。
(1) A video switching means that sequentially switches and outputs a plurality of video signals in response to an external switching command signal, and recording completes when recording one field of the switched video signal output from this video switching means. The field video recording means outputs a signal, and the step-down means outputs a step-down signal by thinning the recording completion signal in half, and the step-down signal is configured to be used as a switching command signal to the video switching means. A field video recording device characterized by:
JP2139431A 1990-05-29 1990-05-29 Field video image recorder Pending JPH0432391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2139431A JPH0432391A (en) 1990-05-29 1990-05-29 Field video image recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2139431A JPH0432391A (en) 1990-05-29 1990-05-29 Field video image recorder

Publications (1)

Publication Number Publication Date
JPH0432391A true JPH0432391A (en) 1992-02-04

Family

ID=15245039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2139431A Pending JPH0432391A (en) 1990-05-29 1990-05-29 Field video image recorder

Country Status (1)

Country Link
JP (1) JPH0432391A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61293080A (en) * 1985-06-20 1986-12-23 Mitsubishi Electric Corp Magnetic recording device for camera signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61293080A (en) * 1985-06-20 1986-12-23 Mitsubishi Electric Corp Magnetic recording device for camera signal

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