JPS63135077A - Vtr device - Google Patents

Vtr device

Info

Publication number
JPS63135077A
JPS63135077A JP61281268A JP28126886A JPS63135077A JP S63135077 A JPS63135077 A JP S63135077A JP 61281268 A JP61281268 A JP 61281268A JP 28126886 A JP28126886 A JP 28126886A JP S63135077 A JPS63135077 A JP S63135077A
Authority
JP
Japan
Prior art keywords
band compression
signal
vtr
band
video
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
JP61281268A
Other languages
Japanese (ja)
Inventor
Kazuaki Hanaoka
花岡 一昶
Tadashi Ochiai
落合 忠
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General 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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP61281268A priority Critical patent/JPS63135077A/en
Publication of JPS63135077A publication Critical patent/JPS63135077A/en
Pending legal-status Critical Current

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  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To attain high definition and high picture quality by connecting a band compression encoder in parallel with a video recording processing circuit and a band compression decoder in parallel with a reproduction processing circuit via a selector switch. CONSTITUTION:In selecting the band compression mode by selector switches 2a-2d, a video input signal uses the band compression encoder 4 to be compressed into nearly 1/2 and the compressed video signal is recorded on a video tape by a video recording part of the VTR 5. In selecting the band compression mode by the selector switches 2a-2d at reproduction, the video reproducing signal obtained by the reproduction section of the VTR 5 is expanded into nearly twice band by the band compression decoder 7. As a result, the video input original signal to which resolution is improved is reproduced. In selecting the normal mode by the selector switch, the signal is recorded by the VHS, 8mm or the beta system and reproduced.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は、映像信号の帯域圧縮モードと通常モードとを
選択的に切換え可能にしたVTR装置に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a VTR device that can selectively switch between a video signal band compression mode and a normal mode.

「従来の技術」 現在の家庭用VTRの場合、録画可能な周波数帯域が狭
いため解像度が250〜280本程度の画質しか得られ
ない。そこで、映像信号を帯域圧縮方式であるMUSE
方式やTAT方式により杓子に圧縮することにより解像
度を上げる方式が種々発表されている(特開昭61−6
2286号、テレビジョン学会誌Vo1.39、No、
 10(1985) (7)P934(84)−940
(90)など)。
``Prior Art'' In the case of current home VTRs, the frequency band in which recording can be performed is narrow, so that image quality with a resolution of only about 250 to 280 lines can be obtained. Therefore, the video signal is processed using MUSE, which is a band compression method.
Various methods have been announced to increase the resolution by compressing the image using the TAT method or the TAT method (Japanese Patent Laid-Open No. 61-6
No. 2286, Television Society Journal Vol. 1.39, No.
10 (1985) (7) P934 (84)-940
(90) etc.).

ところが従来は、通常方式のVTRと帯域圧縮方式のV
TRとはそれぞれ独立して構成されてぃた。
However, in the past, the normal system VTR and the band compression system VTR
Each was configured independently from TR.

「発明が解決しようとする問題点」 しかるに、従来のように通常方式のVTRと圧縮方式の
VTRとが独立して構成されていると、互換性がなく、
従来のVTRでは高精細化、高画質化を図ることができ
ないという問題があった。
``Problem to be solved by the invention'' However, if the normal system VTR and the compression system VTR are configured independently as in the past, they are not compatible.
Conventional VTRs have had the problem of not being able to achieve high definition and high image quality.

「問題点を解決するための手段」 本発明はこのような問題点を解決するためになされたも
ので、ビデオ信号を、帯域圧縮しない通常方式の録画処
理回路を介してVTRに録画し、さらに、このVTRか
ら帯域圧縮しない通常方式の再生処理回路を介してモニ
タTVへ送るようにしたものにおいて、前記通常方式の
録画処理回路と並列に、帯域圧縮エンコーダを選択スイ
ッチを介して結合するとともに、前記通常方式の再生処
理回路と並列に帯域圧縮デコーダを選択スイッチを介し
て結合してなるものである。
"Means for Solving the Problems" The present invention was made to solve these problems, and it records video signals on a VTR through a normal recording processing circuit that does not compress bands, and further , in which data is transmitted from the VTR to the monitor TV via a normal type playback processing circuit that does not perform band compression, a band compression encoder is coupled via a selection switch in parallel with the normal type recording processing circuit; A band compression decoder is connected in parallel to the normal type reproduction processing circuit via a selection switch.

「作用」 選択スイッチによって帯域圧縮モードを選択すると、ビ
デオ入力信号は帯域圧縮エンコーダにより約+の帯域に
圧縮される。圧縮されたビデオ信号はVTRの録画部に
よりビデオテープに記録される。再生時には選択スイッ
チにより帯域圧縮モードを選択するとVTRの再生部よ
り得られたビデオ再生信号は帯域圧縮デコーダにより約
2倍の帯域に伸長され、この結果、解像度の向上したビ
デオ入力原信号が再生される。選択スイッチにより通常
モードを選択した時は従来のV HS、8ミリまたはベ
ータ方式により録画され、かつ再生される。
"Operation" When the band compression mode is selected by the selection switch, the video input signal is compressed to approximately + band by the band compression encoder. The compressed video signal is recorded on videotape by the recording section of the VTR. During playback, when the band compression mode is selected using the selection switch, the video playback signal obtained from the playback section of the VTR is expanded to about twice the band by the band compression decoder, and as a result, the original video input signal with improved resolution is played back. Ru. When the normal mode is selected by the selection switch, recording and playback are performed in conventional VHS, 8mm or Beta format.

「実施例」 以下、本発明の一実施例を図面により説明する。"Example" An embodiment of the present invention will be described below with reference to the drawings.

第1図において、(1)はビデオ信号入力端子で、この
ビデオ信号入力端子(1)は第1の選択スイッチ(2a
)を介して通常方式の録画処理回路(3)と帯域圧縮エ
ンコーダ(4)に接続され、これらは第2の選択スイッ
チ(2b)を介してV T R(5)の入力側に結合さ
れている。このV T R(5)の出力側は第3の選択
スイッチ(2c)を介して通常方式の再生処理回路(6
)と帯域圧縮デコーダ(7)に接続され、これらは第4
の選択スイッチ(2d)を介してビデオ信号出力端子(
8)に結合されている。
In FIG. 1, (1) is a video signal input terminal, and this video signal input terminal (1) is connected to the first selection switch (2a
) to a normal recording processing circuit (3) and a band compression encoder (4), which are coupled to the input side of the VTR (5) via a second selection switch (2b). There is. The output side of this VTR (5) is connected to a normal reproduction processing circuit (6) via a third selection switch (2c).
) and a band compression decoder (7), which are connected to the fourth
The video signal output terminal (
8).

前記通常の録画処理回路(3)と再生処理回路(6)は
それぞれ輝度信号処理回路(9) (10)と色信号処
理回路(11)(12)からなる。
The normal recording processing circuit (3) and playback processing circuit (6) each include a luminance signal processing circuit (9) (10) and a color signal processing circuit (11) (12).

つぎに、以上のような回路構成の作用を説明する。Next, the operation of the circuit configuration as described above will be explained.

(1)互いに連動する第1、第2.第3、第4の選択ス
イッチ(2a) (2b) (2c) (2d)を通常
方式に結合すると、ビデオ信号はVH3,8ミリ、ベー
タ方式のいずれかの方式によってV T R(5)に録
画され、また、この録画されたビデオ信号はV HS、
8ミリ、ベータのいずれかの方式で再生される。
(1) The first and second . When the third and fourth selection switches (2a) (2b) (2c) (2d) are connected to the normal method, the video signal is sent to the VTR (5) using either the VH3, 8mm, or Beta method. The recorded video signal is VHS,
It will be played in either 8mm or Beta format.

(2)第1、第2、第3、第4の選択スイッチ(2a)
(2b) (2c) (2d)を帯域圧縮方式側に切換
えると、帯域圧縮エンコーダ(4)により例えば杓子の
帯域に圧縮され、圧縮されたビデオ信号は、V T R
(5)の録画部によってビデオテープに記録される。再
生時には、V T R(5)の再生部により得られたビ
デオ再生信号が帯域圧縮デコーダ(7)により約2倍の
帯域に伸長されてビデオ入力原信号が再生される。
(2) First, second, third, fourth selection switch (2a)
(2b) (2c) When (2d) is switched to the band compression method side, the band compression encoder (4) compresses the video signal to, for example, a small band, and the compressed video signal is converted to VTR.
(5) Recorded on video tape by the recording section. During playback, the video playback signal obtained by the playback section of the VTR (5) is expanded to about twice the band by the band compression decoder (7), and the video input original signal is played back.

この帯域圧縮方式には、TAT方式、MUSE方式など
があるが、以下にTAT方式による帯域圧縮について説
明する。 現行の家庭用VTRの水平解像度は約200
本捏度しかないが、TAT方式により帯域圧縮してV 
T R(5)に記録し、再生後に元の帯域に戻すことに
より、V T R(5)の解像度を2倍以上の解像度に
向上することができる。
Bandwidth compression methods include the TAT method, the MUSE method, and the like. Bandwidth compression using the TAT method will be described below. The horizontal resolution of current home VTRs is approximately 200
Although there is only this modification, the bandwidth is compressed using the TAT method and V
By recording on the VTR (5) and returning to the original band after playback, the resolution of the VTR (5) can be improved to more than double the resolution.

TAT方式は、第7図(b)に示すように精細でない部
分の画素を選択的に間引く(間引いた基本画素が従来の
VTRと同程度)ことにより帯域を圧縮するもので1画
素の間引き方の情報をモード情報というものとする。T
AT方式では第5図に示すように色信号と輝度信号を時
間軸圧縮多重したTCI信号に対して帯域圧縮を行うた
め、従来のVTRの記録方式のように低域変換色信号を
必要としない。そこで、帯域圧縮されたTCI信号は従
来の輝度信号帯域にFM方式により記録し、モード情報
は従来の低域変換色信号帯域に4相PSKにより記録す
る。
As shown in Figure 7(b), the TAT method compresses the band by selectively thinning out pixels in areas that are not fine (the thinned out basic pixels are the same as those of conventional VTRs). This information is called mode information. T
As shown in Figure 5, the AT system performs band compression on the TCI signal, which is a time-base compression multiplexed color signal and luminance signal, so there is no need for a low frequency conversion color signal as in the conventional VTR recording system. . Therefore, the band-compressed TCI signal is recorded in the conventional luminance signal band using the FM method, and the mode information is recorded in the conventional low-frequency conversion color signal band using 4-phase PSK.

第2図は帯域エンコーダ(4)、第3図は帯域圧縮デコ
ーダ(7)の具体的回路を示す。輝度信号と色信号はT
CIエンコーダ(13)によりTCI信号に変換され、
TATエンコーダ(14)で帯域圧縮処理される。帯域
圧縮されたTCI信号は、VD付加回路(15)で垂直
同期信号を付加し、FM変調器(16)でFM変調する
。一方、TATエンコーダ(14)から出力されるモー
ド情報は、4相PSK変調器(17)で変調し、FM信
号と混合回路(18)で混合された後、V T R(5
)のビデオテープ上に記録される。4相P’SKのキャ
リアは、再生時のりサンプリングクロックを作成するた
めにも使用されるので、サンプリングクロックを分周し
て得ている。
FIG. 2 shows a specific circuit of the band encoder (4), and FIG. 3 shows a specific circuit of the band compression decoder (7). The luminance signal and color signal are T
It is converted into a TCI signal by a CI encoder (13),
Band compression processing is performed by the TAT encoder (14). A VD addition circuit (15) adds a vertical synchronization signal to the band-compressed TCI signal, and an FM modulator (16) performs FM modulation. On the other hand, the mode information output from the TAT encoder (14) is modulated by a 4-phase PSK modulator (17), mixed with the FM signal by a mixing circuit (18), and then sent to the VTR (5
) recorded on videotape. Since the 4-phase P'SK carrier is also used to create a sampling clock during reproduction, it is obtained by frequency-dividing the sampling clock.

再生時には、混合されているFM信号と4相PSK信号
をB P F (19) (20)で分離し、それぞれ
の復調器(21) (22)により復調する。復調され
たTCr信号は、VD分離回路(23)で垂直同期信号
を分離し、TATデコーダ(24)でもとの帯域にもど
される。4相PSK復調器(22)から出力される再生
キャリアはP L L (25)によりてい倍されて、
リサンプリングクロックとして用いられる。そして、リ
サンプリングクロックと垂直同期信号より水平同期信号
が作成され、TATデコーダ(24)に入力される。T
CI信号はTCIデコーダ(26)により輝度信号と色
信号に分離され、もとの画像信号を得る。(27)はH
D作成回路である。以上のTAT方式の処理は第6図(
a) (b)のフローチャートによって示され、また、
基本画素だけのCモードと、基本画素に追加画素を補間
したEモードのサンプリングパターンが第7図(a) 
(b)に示される。
During reproduction, the mixed FM signal and 4-phase PSK signal are separated by B P F (19) (20) and demodulated by respective demodulators (21) (22). The demodulated TCr signal is separated into vertical synchronization signals by a VD separation circuit (23), and returned to its original band by a TAT decoder (24). The reproduced carrier output from the 4-phase PSK demodulator (22) is multiplied by P L L (25),
Used as a resampling clock. Then, a horizontal synchronization signal is created from the resampling clock and the vertical synchronization signal, and is input to the TAT decoder (24). T
The CI signal is separated into a luminance signal and a color signal by a TCI decoder (26) to obtain the original image signal. (27) is H
This is a D creation circuit. The above TAT method processing is shown in Figure 6 (
a) is illustrated by the flowchart in (b), and
Figure 7(a) shows the sampling patterns of C mode with only basic pixels and E mode with interpolation of additional pixels to basic pixels.
Shown in (b).

前記実施例では、同じビデオ信号入力端子からのビデオ
信号を、通常方式かまたは帯域圧縮方式のいずれかを使
用者が選択して録画再生するようにしたが、第4図に示
すように、2個のビデオ信号入力端子(28) (29
)を有し、一方の高帯域用ビデオカメラからの信号のと
きは帯域圧縮方式とし、通常のビデオカメラからの信号
のときは通常方式%式% この場合再生系において、ビデオ信号が帯域圧縮された
信号であることを帯域圧縮デコーダ(7)にて判別でき
れば、手動の選択スイッチ(2d)に代えて自動的な選
択スイッチ(2)として自動切換えとすることができる
。帯域圧縮された信号であるか通常方式の信号かどうか
の判別は例えばモード情報の有無によつ、て行うことが
できる。
In the above embodiment, the user selects either the normal method or the band compression method to record and play back the video signal from the same video signal input terminal, but as shown in FIG. video signal input terminals (28) (29
), and when the signal is from a high-band video camera, the band compression method is used, and when the signal is from a normal video camera, the normal method is used.In this case, in the playback system, the video signal is band-compressed. If the band compression decoder (7) can determine that the signal is the same as the one shown in FIG. Whether the signal is a band-compressed signal or a normal signal can be determined based on, for example, the presence or absence of mode information.

「発明の効果」 本発明は上述のように構成したので、帯域圧縮方式を選
択したときは通常方式の2倍以上の解像度の向上ができ
、また、従来方式もそのまま利用できるので、互換性を
もたせることができる。
"Effects of the Invention" Since the present invention is configured as described above, when the band compression method is selected, the resolution can be improved by more than twice that of the normal method, and the conventional method can also be used as is, improving compatibility. It can be made to stand.

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

第1図は本発明によるVTR装置の第1実施例のブロッ
ク図、第2図はTAT方式の帯域圧縮エンコーダのブロ
ック図、第3図はTAT方式の帯域圧縮デコーダのブロ
ック図、第4図は本発明の他の実施例のブロック図、第
5図はTCI信号波形図、第6図はフローチャート、第
7図はモード別画素配列図である。 (1) (28) (29)−・ビデオ信号入力端子、
 (2) (2a) (2b)(2c)(2d)・・・
選択スイッチ、(3)・・・通常方式の録画処理回路、
(4)・・・帯域圧縮エンコーダ、(5)・・・VTR
1(6)・・・通常方式の再生処理回路、(7)・・・
帯域圧縮デコーダ、(8)・・・ビデオ出力端子。 出願人  株式会社富士通ゼネラル 第  5  図 第6図 第7図 oooo    xxxx     O’4no&業0
00o  ・×・×   x記録ぽい画素oooo  
    xxxx
FIG. 1 is a block diagram of a first embodiment of a VTR device according to the present invention, FIG. 2 is a block diagram of a TAT band compression encoder, FIG. 3 is a block diagram of a TAT band compression decoder, and FIG. 4 is a block diagram of a TAT band compression decoder. FIG. 5 is a block diagram of another embodiment of the present invention, FIG. 5 is a TCI signal waveform diagram, FIG. 6 is a flowchart, and FIG. 7 is a pixel arrangement diagram for each mode. (1) (28) (29)--Video signal input terminal,
(2) (2a) (2b) (2c) (2d)...
Selection switch, (3)...Normal recording processing circuit,
(4)...bandwidth compression encoder, (5)...VTR
1(6)...Normal type regeneration processing circuit, (7)...
Band compression decoder, (8)...video output terminal. Applicant Fujitsu General Ltd. Figure 5 Figure 6 Figure 7 oooo xxxx O'4no&0
00o ・×・× x Recording-like pixelsoooo
xxxx

Claims (5)

【特許請求の範囲】[Claims] (1)ビデオ信号を、帯域圧縮しない通常方式の録画処
理回路を介してVTRに録画し、さらに、このVTRか
ら帯域圧縮しない通常方式の再生処理回路を介してモニ
タTVへ送るようにしたものにおいて、前記通常方式の
録画処理回路と並列に、帯域圧縮エンコーダを選択スイ
ッチを介して結合するとともに、前記通常方式の再生処
理回路と並列に帯域圧縮デコーダを選択スイッチを介し
て結合してなることを特徴とするVTR装置。
(1) In a system in which a video signal is recorded on a VTR via a normal recording processing circuit that does not compress bandwidth, and is further sent from the VTR to a monitor TV via a normal playback processing circuit that does not compress bandwidth. , a band compression encoder is coupled in parallel with the normal type recording processing circuit via a selection switch, and a band compression decoder is coupled in parallel with the normal type playback processing circuit via a selection switch. Characteristic VTR device.
(2)帯域圧縮方式はTAT(Time−Axis T
ransform、時間軸変換)方式からなる特許請求
の範囲第1項記載のVTR装置。
(2) The band compression method is TAT (Time-Axis T
2. The VTR device according to claim 1, comprising a time axis conversion (transform, time axis conversion) system.
(3)通常方式はVHS、8ミリまたはベータ方式から
なる特許請求の範囲第1項記載のVTR装置。
(3) The VTR device according to claim 1, wherein the normal system is VHS, 8mm or Beta system.
(4)選択スイッチは手動型からなる特許請求の範囲第
1項記載のVTR装置。
(4) The VTR device according to claim 1, wherein the selection switch is of a manual type.
(5)選択スイッチは帯域圧縮モード情報に対応して切
換わる自動型からなる特許請求の範囲第1項記載のVT
R装置。
(5) The VT according to claim 1, wherein the selection switch is an automatic type that switches in response to band compression mode information.
R device.
JP61281268A 1986-11-26 1986-11-26 Vtr device Pending JPS63135077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61281268A JPS63135077A (en) 1986-11-26 1986-11-26 Vtr device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61281268A JPS63135077A (en) 1986-11-26 1986-11-26 Vtr device

Publications (1)

Publication Number Publication Date
JPS63135077A true JPS63135077A (en) 1988-06-07

Family

ID=17636703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61281268A Pending JPS63135077A (en) 1986-11-26 1986-11-26 Vtr device

Country Status (1)

Country Link
JP (1) JPS63135077A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0214468A (en) * 1988-07-01 1990-01-18 Canon Inc Digital signal recorder
JPH02257780A (en) * 1989-03-30 1990-10-18 Canon Inc Still video camera

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377607A (en) * 1976-12-21 1978-07-10 Matsushita Electric Ind Co Ltd Video recorder and reproducer
JPS6028388A (en) * 1983-07-27 1985-02-13 Hitachi Ltd Magnetic recording and reproducing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5377607A (en) * 1976-12-21 1978-07-10 Matsushita Electric Ind Co Ltd Video recorder and reproducer
JPS6028388A (en) * 1983-07-27 1985-02-13 Hitachi Ltd Magnetic recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0214468A (en) * 1988-07-01 1990-01-18 Canon Inc Digital signal recorder
JPH02257780A (en) * 1989-03-30 1990-10-18 Canon Inc Still video camera

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