JPH0677387B2 - The video signal recording and reproducing apparatus - Google Patents

The video signal recording and reproducing apparatus

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Publication number
JPH0677387B2
JPH0677387B2 JP60166108A JP16610885A JPH0677387B2 JP H0677387 B2 JPH0677387 B2 JP H0677387B2 JP 60166108 A JP60166108 A JP 60166108A JP 16610885 A JP16610885 A JP 16610885A JP H0677387 B2 JPH0677387 B2 JP H0677387B2
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signal
video signal
video
reproducing apparatus
dubbing
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JPS6226681A (en
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芳弘 村上
幸三 神永
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ソニー株式会社
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Publication of JPH0677387B2 publication Critical patent/JPH0677387B2/en
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Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はダビングに好適な映像信号記録再生装置に関する。 DETAILED DESCRIPTION OF THE INVENTION The present invention [relates] relates suitable video signal recording and reproducing apparatus in the dubbing.

〔発明の概要〕 本発明は、ビデオテーブレコーダの再生側で信号処理を行なうようにした映像信号記録再生装置において、信号処理用制御信号及び未処理の再生映像信号とを時分割で出力してダビング用信号とすることにより、ダビングによる再生画像の品位の劣化を防止するようにしたものである。 SUMMARY OF THE INVENTION The present invention, in the video signal recording and reproducing apparatus that performs signal processing on the playback video table recorder outputs by time division and reproduced video signal of the signal processing control signal and untreated with dubbing signal is obtained by so as to prevent quality degradation of the reproduced image due to dubbing.

〔従来の技術〕 [Prior art]

まず、従来のデジタルビデオテープレコーダ(以下、D- First, conventional digital video tape recorder (hereinafter, D-
VTRと略称する)間のダビングについて、第4図を参照しながら説明する。 Dubbing between VTR and abbreviated), it will be described with reference to Figure 4.

第4図において、(1)は主記録再生装置(マスター装置)を全体として示し、カメラCMからのアナログ映像信号が入力端子(11)に供給され、図示を省略したAD変換器によりデジタルビデオデータに変換されて、D-VTR In FIG. 4, (1) the main recording shows apparatus (master unit) as a whole, an analog video signal from the camera CM is supplied to the input terminal (11), the digital video data by an AD converter (not shown) It is converted to, D-VTR
(記録・再生系)(12)に供給される。 It is supplied to the (recording and reproducing system) (12). D-VTR(12)からの再生ビデオデータはデジタル信号処理装置(プロセツサ)(13)に供給される。 Reproducing video data from the D-VTR (12) is supplied to the digital signal processor (processor) (13). (14)はデジタル制御信号発生器であつて、映像利得、彩度利得、色相、セツトアツプ(ペデスタル)、映像位相等の各種調整器を有し、 (14) an alien digital control signal generator comprises video gain, chroma gain, hue, Setsutoatsupu (pedestal), various regulators such as video phase,
これらの調整器の状態に対応するデジタル制御信号(制御データ)が発生器(14)からプロセツサ(13)に供給される。 Digital control signal corresponding to the state of these regulators (control data) is supplied from the generator (14) to the processor (13). プロセツサ(13)においては、これらの制御データに応じて、ビデオデータの演算処理が行なわれる。 In processor (13), in response to these control data, the arithmetic processing of the video data.
プロセツサ(13)で処理されたビデオデータは、ダビング出力端子(15)を介して、従記録再生装置(スレーブ装置)(2)に供給されると共に、図示を省略したDA Video data processed by the processor (13) via a dubbing output terminal (15) is supplied to the slave reproducing apparatus (slave apparatus) (2), not shown DA
変換器によりアナログ映像信号に変換され、モニタ端子(16)を介してモニタMに供給されて、処理結果が確認される。 Is converted into an analog video signal by the transducer, is supplied to the monitor M through the monitor terminal (16), the processing result is verified.

なお、簡単のために、色相の調整は、ビデオデータを一旦アナログ信号に変換してアナログプロセツサによつて行ない、調整されたアナログ映像信号を再びデジタルデータに変換している。 Incidentally, for the sake of simplicity, the adjustment of hue, are converting video data once performed in cowpea analog pro-broken into an analog signal, the adjusted analog video signal back into digital data.

ダビングが行なわれるスレーブ装置(2)は上述のマスタ装置(1)と同一の構成であるので、対応する各部分の符号の10の桁の数字を2とし、1の桁の数字を同じくして、詳細説明を省略する。 Since the slave devices dubbing is performed (2) have the same configuration as the aforementioned master device (1), the 10 digits in the corresponding reference numerals of the parts and 2, and also the first digit , and a detailed description thereof will be omitted.

〔発明が解決しようとする問題点〕 [Problems to be Solved by the Invention]

ところが、上述のデジタル信号処理はデジタル乗算であつて、量子化に起因する或程度の演算誤差が発生する。 However, the digital signal processing mentioned above shall apply in the digital multiplication, the calculation error of some extent due to the quantization occurs.
このため、上述のように、再生側のプロセツサで信号処理を行ないながらダビングを繰返すと、演算誤差が累積されてしまい、例えば、利得調整の場合は波形歪となり、映像位相調整の場合は再生画像の左端、右端のいずれかが欠除するというように、再生画像の品位が劣化するという問題があつた。 Therefore, as described above, the repeated dubbing while performing signal processing in processor on the reproducing side, calculation errors will be accumulated, for example, in the case of the gain adjustment a waveform distortion, in the case of video phase adjustment reproduced image of the left, so that either the right edge of the lack, the quality of the reproduced image is there has been a problem of deterioration.

かかる点に鑑み、本発明の目的は、ダビングによる再生画像の品位の劣化を防止することのできる映像信号記録再生装置を提供するところにある。 View of the foregoing, an object of the present invention is to provide a video signal recording and reproducing apparatus capable of preventing the quality degradation of the reproduced image due to dubbing.

〔問題点を解決する為の手段〕 [It means for solving the problem]

本発明は、ビデオテープレコーダ(12)からの再生映像信号SV及び制御信号発生器(14)からの少くとも利得調整用の制御信号Cを信号処理装置(13)に供給するようにした映像信号記録再生装置(10)において、再生映像信号SV及び制御信号Cが供給される切換えスイツチ回路(17)を設け、この切換えスイツチ回路(17)により再生映像信号SV及び制御信号Cをダビング用信号として時分割に出力するようにした映像信号記録再生装置である。 The present invention is a video signal so as to supply the control signal C for at least gain adjustment from the playback from a video tape recorder (12) the video signal SV and a control signal generator (14) to the signal processor (13) the recording and reproducing apparatus (10), the switching switch circuit reproduced video signal SV and the control signal C is supplied (17) is provided, as dubbing signal reproduced video signal SV and the control signal C by the switching switch circuit (17) when a video signal recording and reproducing apparatus so as to output the division.

〔作用〕 [Action]

かかる構成によれば、信号処理装置を経由しない再生映像信号がダビング用信号として得られ、ダビングによる再生画像の品位の劣化が防止される。 According to such a configuration, the reproduced video signal which does not pass through the signal processing unit is obtained as a dubbing signal quality degradation of the reproduced image due to dubbing can be prevented.

〔実施例〕 〔Example〕

以下、第1図〜第3図を参照しながら、本発明による映像信号記録再生装置をD-VTRに適用した一実施例について説明する。 Hereinafter, with reference to FIG. 1-FIG. 3, a video signal recording and reproducing apparatus according to the present invention describes an embodiment applied to D-VTR.

本発明の一実施例の構成を第1図に示す。 The structure of an embodiment of the present invention shown in Figure 1. この第1図において、第4図に対応する部分には同一の符号を付して重複説明を省略する。 In the first figure, parts corresponding to Figure 4 the duplicated description thereof is omitted with the same reference numerals.

第1図において、(10)はマスタ装置を全体として示し、D-VTR(12)の再生ビデオデータSV 1がプロセツサ(13)に供給される共に、切換えスイツチ回路(電子スイツチ)(17)の一方の固定接点(17a)に供給される。 In FIG. 1, (10) generally represents the master device, both the reproduced video data SV 1 of D-VTR (12) is supplied to the processor (13), switching switch circuit (electronic switch) (17) It is supplied to the fixed contact (17a). また、制御信号発生器(14)の制御データC 1がプロセツサ(13)に供給されると共に、電子スイツチ(17) The control signal generator with control data C 1 (14) is supplied to the processor (13), an electronic switch (17)
の他方の固定接点(17b)に供給され、電子スイツチ(1 Is supplied to the other fixed contact (17b), the electronic switch (1
7)の可動接点(17c)は、ダビング出力端子(15)を介して、スレーブ装置(20)の入力端子(21)は接続される。 7 movable contact (17c) of) via a dubbing output terminal (15), the input terminal (21 of the slave device (20)) are connected. スレーブ装置(20)のD-VTR(22)の再生ビデオデーチSV 2がプロセツサ(23)に供給されると共に、電子スイツチ(27)の一方の固定接点(27a)に供給され、D With reproduction Bideodechi SV 2 of D-VTR of the slave device (20) (22) is supplied to the processor (23) is supplied to one fixed contact of the electronic switch (27) (27a), D
-VTR(22)の再生制御データSCが、加算器(28)において、スイツチ(29)を介してこの加算器(28)に接続される制御信号発生器(24)の制御データC 2と加算される。 Reproduction control data SC for -VTR (22) are added by the adder (28), and the control data C 2 of switch (29) via a control signal generator connected to the adder (28) (24) It is. 加算器(28)の出力がプロセツサ(23)に供給されると共に、電子スイツチ(27)の他方の固定接点(27 The output of the adder (28) is supplied to the processor (23), the other fixed contact of the electronic switch (27) (27
b)に供給される。 Is supplied to the b). 電子スイツチ(27)の可動接点(27 The movable contact of the electronic switch (27) (27
c)はダビング出力端子(26)に接続される。 c) it is connected to the dubbing output terminal (26).

本実施例の動作は次のとおりである。 Operation of this embodiment is as follows.

デジタル制御信号発生器(14)は、例えば第2図に示すように、それぞれ16ビツトの映像利得制御データD VG Digital control signal generator (14), for example, as shown in FIG. 2, the video gain control data D VG for each 16 bits,
彩度利得制御データD CG及び色相制御データD HU並びにそれぞれ8ビツトのセツトアツプ制御データD SU及び映像位相制御データD VP等の各種の制御データと、これら制御データの有無を示すそれぞれ1ビツトのフラグとを発生する。 A saturation gain control data D CG and hue control data D HU and various control data such Setsutoatsupu control data D SU and video phase control data D VP for each 8 bits, flag of 1 bit indicating the presence or absence of these control data to generate the door.

デジタルテレビジヨン方式においては、各垂直ブランキング期間毎に始めの数ラインが補助データ用とされているので、この間、電子スイツチ(17)は図示とは逆の接続状態とされ、上述の各種制御データがダビング出力端子(15)からスレーブ装置(20)のD-VTR(22)に供給されて、第3図のD 1 〜D 3に示すように、補助データラインの1つに、例えば3回以上の繰返して記録され、ドロツプアウト等による誤りの発生が防止される。 In digital television systems, because several lines of the beginning for each vertical blanking period is the auxiliary data, during which the electronic switch (17) is a reverse connection state and shown, above-described various control data is supplied from the dubbing output terminal (15) to the D-VTR of the slave device (20) (22), as shown in D 1 to D 3 of FIG. 3, in one of the auxiliary data lines, for example 3 times are recorded over repeated, generation of error due to dropout or the like is prevented.

各フイールドのビデオデータ記録期間には、電子スイツチ(17)が図示の接続状態となり、マスタ装置(10)の再生ビデオデータSV 1は、従来にようにプロセツサ(1 The video data recording period of each field, become the electronic switch (17) is in the connected state shown, the reproduced video data SV 1 of the master device (10), as in the prior art processor (1
3)を経由することなく、ダビング出力端子(16)からスレーブ装置(20)D-VTR(22)に供給され、記録される。 3) without passing through the supplied from the dubbing output terminal (16) to the slave device (20) D-VTR (22), it is recorded.

スレーブ装置(20)において、プロセツサ(23)にはD- The slave device (20), the processor (23) D-
VTR(22)からの再生ビデオデータSV 2が直接に供給される共に、加算器(28)を介して、再生制御データSCが供給されており、スイツチ(29)が開放された状態では、 Both the reproduced video data SV 2 from VTR (22) is supplied directly, via the adder (28), reproduction control data SC are supplied, in the state where the switch (29) is opened,
プロセツサ(23)は再生ビデオデータSV 2に対してマスタ装置(10)のプロセツサ(13)と全く同一の演算処理を行なう。 Processor (23) performs exactly the same processing and processor (13) of the master device (10) relative to the reproduced video data SV 2. この再生ビデオデータSV 2はD-VTR(22)に供給されたマスタ装置(10)の再生ビデオデータSV 1と異なるところがないので、プロセツサ(25)の出力はマスタ装置(10)のプロセツサ(13)の出力と同一となる。 This reproduced video data SV 2 is not is different from the reproduced video data SV 1 of the master device which is supplied to the D-VTR (22) (10), processor of processor output (25) of the master device (10) (13 ) consisting of output and of the same.

また、スイツチ(29)が閉成された状態では、制御信号発生器(24)の制御データC 2と再生制御データSCとが加算されてプロセツサ(23)に供給されるので、プロセッサ(23)においてプロセッサ(13)におけるものとは異なる新な演算処理が行なわれる。 In a state where switches (29) is closed, the control signal generator and the control data C 2 (24) and a reproduction control data SC is supplied is added to the processor (23), the processor (23) new arithmetic processing which is different from that in the processor (13) in is performed.

上述のように、本実施例においては、D-VTRの未処理の再生ビデオデータを直接にダビング出力端子に供給すると共に、制御データを時分割で同じダビング出力端子に供給するようにしたので、複数回のダビングを行なつても、累積演算誤差により再生画像の品位が劣化することがなく、原画像を忠実に再現することができる。 As described above, in the present embodiment, is supplied directly to the dubbing output terminal reproduced video data unprocessed D-VTR, since then supplied to the same dubbing output terminal by time division control data, multiple dubbing rows of connexion also without deterioration of the quality of the reproduced image due to the accumulation calculation errors, the original image can be faithfully reproduced.

以上、D-VTRについて説明したが、本発明をアナログVTR Having described D-VTR, the analog VTR of the present invention
に適用した場合、例えば、ダビング時の映像利得の変化を除去することができて、再生画像の品位の劣化を防止することができる。 When applied to, for example, to be able to remove the change in the video gain during dubbing, it is possible to prevent the quality deterioration of the reproduced image. なお、この場合、制御信号は、後えば垂直帰線期間に適宜記録される。 In this case, the control signal may appropriately be recorded in the vertical blanking interval if the rear example.

〔発明の効果〕 〔Effect of the invention〕

以上詳述のように、本発明によれば、再生映像信号と制御信号を時分割により出力するようにしたので、ダビングによる再生画像の品位の劣化を防止することができる。 Above in detail as in the above, according to the present invention, since the output by time division reproduced video signal and the control signal, it is possible to prevent the quality deterioration of the reproduced image due to dubbing.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

第1図は本発明による映像信号記録再生装置の一実施例の構成を示すブロック図、第2図及び第3図は本発明の一実施例の制御信号のフオーマツトを示す線図及び波形図、第4図は従来の映像信号記録再生装置の構成例を示すブロツク図である。 Block diagram showing the configuration of an embodiment of FIG. 1 is a video signal recording and reproducing apparatus according to the present invention, diagrams and waveform diagrams showing a the format of the control signal of FIG. 2 and FIG. 3 is an embodiment of the present invention, Figure 4 is a block diagram showing the construction of a conventional video signal recording and reproducing apparatus. (12)はビデオテープレコーダ、(13)は信号処理装置、(14)は制御信号発生器、(17)は切換えスイツチ回路、Cは制御信号、SVは再生映像信号である。 (12) is a video tape recorder, (13) a signal processor (14) is a control signal generator (17) is switched switching circuit, C is the control signal, SV is a reproduced video signal.

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】ビデオテープレコーダからの再生映像信号及び制御信号発生器からの少くとも利得調整用の制御信号を信号処理装置に供給するようにした映像信号記録再生装置において、 上記再生映像信号及び上記制御信号が供給される切換えスイツチ回路を設け、 該切換えスイツチ回路により上記再生映像信号及び上記制御信号をダビング用信号として時分割に出力するようにしたことを特徴とする映像信号記録再生装置。 1. A least a video signal recording and reproducing apparatus that supplies a control signal for the gain control to the signal processor from the reproduced video signal and a control signal generator from the video tape recorder, the reproduced video signal and provided switching switch circuit in which the control signal is supplied, the video signal recording and reproducing apparatus is characterized in that so as to output a time division the reproduced video signal and said control signal by said switching switch circuit as dubbing signal.
JP60166108A 1985-07-27 1985-07-27 The video signal recording and reproducing apparatus Expired - Lifetime JPH0677387B2 (en)

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Application Number Priority Date Filing Date Title
JP60166108A JPH0677387B2 (en) 1985-07-27 1985-07-27 The video signal recording and reproducing apparatus

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JPH0677387B2 true JPH0677387B2 (en) 1994-09-28

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