JPH0822071B2 - Color video signal processor - Google Patents
Color video signal processorInfo
- Publication number
- JPH0822071B2 JPH0822071B2 JP20569387A JP20569387A JPH0822071B2 JP H0822071 B2 JPH0822071 B2 JP H0822071B2 JP 20569387 A JP20569387 A JP 20569387A JP 20569387 A JP20569387 A JP 20569387A JP H0822071 B2 JPH0822071 B2 JP H0822071B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video signal
- color
- signal processing
- circuit
- 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.)
- Expired - Lifetime
Links
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- Color Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明はカラー映像信号を信号処理し、複数に分配す
るカラー映像信号処理装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color video signal processing device that processes a color video signal and distributes it to a plurality of signals.
従来の技術 従来カラー映像信号を信号処理し、複数に分配するカ
ラー映像信号処理装置においては、カラー映像信号の入
出力は複合映像信号の形態で行なわれていた。2. Description of the Related Art Conventionally, in a color video signal processing apparatus which processes a color video signal and distributes the color video signal into a plurality of signals, input / output of the color video signal is performed in the form of a composite video signal.
発明が解決しようとする問題点 上述した従来のカラー映像信号処理装置においてはカ
ラー映像信号は複合映像信号の形態で取り扱われるの
で、カラー映像信号処理装置内での輝度信号と搬送色信
号の周波数分離や周波数多重においてフィルタや増幅器
の不完全性により信号の振幅および位相情報が損なわれ
波形歪が生じたり、回路雑音が付加したりするので伝送
信号の品質が低下するという大きな問題点がある。ま
た、たとえばNTSC方式においては輝度信号と搬送色信号
は周波数インタリーブの関係で周波数多重されており、
輝度信号と色信号間の相互干渉によるクロス・カラーや
クロス・ルミナンスが雑音となって画質に与える悪影響
が大きいという問題点がある。さらにNTSC方式において
は輝度信号の帯域は4.2MHz,色信号の帯域はＩ信号およ
びＱ信号に対してそれぞれ1.5MHzおよび0.54MHzと決ま
っているので当然のことながらNTSC方式の規格で決まっ
ている4.2MHz帯域の輝度信号や1.5MHz帯域の色信号より
も広い帯域の、例えばEDTVの6MHz帯域の輝度信号や、ハ
イビジョンの20MHz帯域の輝度信号や7MHz帯域の色信号
などの輝度信号や色信号を伝送できない。Problems to be Solved by the Invention In the above-described conventional color video signal processing device, since the color video signal is handled in the form of a composite video signal, the frequency separation of the luminance signal and the carrier color signal in the color video signal processing device is performed. In frequency multiplexing, the amplitude and phase information of the signal is impaired due to imperfections of the filter and the amplifier, waveform distortion occurs, and circuit noise is added, so that the quality of the transmission signal deteriorates. Further, for example, in the NTSC system, the luminance signal and the carrier color signal are frequency-multiplexed in the relationship of frequency interleaving,
There is a problem that cross color or cross luminance due to mutual interference between the luminance signal and the color signal becomes noise and has a bad influence on the image quality. Furthermore, in the NTSC system, the luminance signal band is 4.2 MHz, and the chrominance signal band is 1.5 MHz and 0.54 MHz for the I signal and the Q signal, respectively. Transmits luminance signals and chrominance signals such as EDTV 6MHz luminance signal, HDTV 20MHz luminance signal and 7MHz luminance signal, which are wider than MHz luminance signal and 1.5MHz luminance signal. Can not.
NTSC信号などの複合映像信号は放送電波用として用い
られた場合にはその構成は有効であるが、放送電波以外
の場面で使用される場合は複合映像信号としての制約を
受けることが多いのが欠点である。When a composite video signal such as an NTSC signal is used for broadcast waves, its configuration is effective, but when used in a scene other than broadcast waves, it is often subject to restrictions as a composite video signal. It is a drawback.
本発明は上記問題点に鑑み、標準信号としての複合映
像信号を扱う場合よりも広帯域でより臨場感の高いアス
ペクト比の高品質なカラー映像信号の入出力および処理
を行なうことができるカラー映像信号処理装置を提供す
るものである。In view of the above problems, the present invention is a color video signal capable of inputting / outputting and processing a high-quality color video signal with an aspect ratio that is wider and more realistic than in the case of handling a composite video signal as a standard signal. A processing device is provided.
問題点を解決するための手段 上記問題点を解決するために本発明のカラー映像信号
処理装置は、標準テレビジョン信号である複合映像信号
よりも広い帯域を持った輝度信号と搬送色信号とをそれ
ぞれ分離して入力する第１および第２のコンポーネント
映像信号入力端子と、標準テレビジョン信号である複合
映像信号を入力するコンポジット映像信号入力端子と、
前記コンポジット映像信号入力端子から入力された複合
映像信号についてY/C分離された輝度信号と搬送色信号
と、前記第１および第２のコンポーネント映像信号入力
端子より入力された輝度信号と搬送色信号とを、それぞ
れ、切り換えて出力するスイッチャ回路と、前記スイッ
チャ回路から出力される輝度信号と搬送色信号とをそれ
ぞれ２つ以上の複数の信号に分配する分配回路と、前記
分配回路により分配された複数の輝度信号と搬送色信号
を１つの組単位として出力する出力端子とを具備するも
のである。Means for Solving the Problems In order to solve the above problems, a color video signal processing device of the present invention provides a luminance signal and a carrier color signal having a wider band than a composite video signal which is a standard television signal. First and second component video signal input terminals that are separately input, and a composite video signal input terminal that inputs a composite video signal that is a standard television signal,
Luminance signal and carrier color signal Y / C separated from the composite video signal input from the composite video signal input terminal, and luminance signal and carrier color signal input from the first and second component video signal input terminals And a distribution circuit for distributing the luminance signal and the carrier color signal output from the switcher circuit to two or more signals, respectively, and a switcher circuit for switching and outputting It is provided with an output terminal for outputting a plurality of luminance signals and carrier color signals as one set unit.
作用 本発明においは、上記した方法により、従来のNTSC複
合映像信号を扱うカラー映像信号処理装置でありなが
ら、複合映像信号の標準方式規格において定められてい
るよりも広帯域でより臨場感の高いアスペクト比の高品
質映像で、しかもクロス・カラーやクロス・ルミナンス
などの相互干渉がなく、しかも回路系の付加雑音のより
少ない高品質なカラー映像信号処理装置を得ることがで
きる。Effect The present invention is a color video signal processing apparatus that handles a conventional NTSC composite video signal by the above method, but has a wider and more realistic aspect than that specified in the standard system standard of the composite video signal. It is possible to obtain a high-quality color video signal processing device which has a high quality image with a high ratio, has no mutual interference such as cross color and cross luminance, and has less additional noise in the circuit system.
実施例 以下本発明のカラー映像信号処理装置の一実施例につ
いて図面を参照しながら説明する。Embodiment An embodiment of the color video signal processing device of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例における要部ブロック図であ
る。第１図においてカラー映像信号処理装置30の入力端
子である、31と32,33と34および35と36には、それぞれ
輝度信号と搬送色信号（Y1とC1，Y2とC2およびY3とC3）
が入力され、入力端子37にはNTSC複合映像信号が入力さ
れる。入力端子37より入力されたNTSC複合映像信号はY/
C分離回路38において輝度信号Y4と搬送色信号C4に分離
される。そしてY1とC1，Y2とC2およびY3とC3およびY4と
C4はそれぞれスイッチ回路39に導かれ外部から与えられ
るスイッチ切替信号により、それらのペアのうちどれか
が出力信号であるYSとCSとなる。スイッチ回路39の出力
信号YSは輝度信号処理回路40に導かれ振幅調整,DCレベ
ル調整および周波数特性調整された分配器42に入力し、
３つの分配出力に分配され、３つの分配出力はそれぞれ
出力端子44,46および48より出力される。スイッチ回路3
9の出力信号CSは搬送色信号処理回路41に導かれ振幅調
整，周波数特性調整された分配器43に入力し、３つの分
配出力に分配され、３つの分配出力はそれぞれ出力端子
45,47および49より出力される。FIG. 1 is a block diagram of essential parts in an embodiment of the present invention. In FIG. 1, 31 and 32, 33 and 34, and 35 and 36, which are input terminals of the color video signal processing device 30, are respectively luminance signals and carrier color signals (Y 1 and C 1 , Y 2 and C 2 and Y 3 and C 3 )
Is input, and the NTSC composite video signal is input to the input terminal 37. The NTSC composite video signal input from input terminal 37 is Y /
The C separation circuit 38 separates the luminance signal Y 4 and the carrier color signal C 4 . And Y 1 and C 1 , Y 2 and C 2 and Y 3 and C 3 and Y 4 ,
C 4 is turned into a switch circuit 39, and a switch switching signal given from the outside causes one of the pairs to become an output signal Y S and C S. The output signal Y S of the switch circuit 39 is guided to the luminance signal processing circuit 40 and input to the distributor 42 whose amplitude, DC level and frequency characteristics have been adjusted,
It is distributed to three distribution outputs, and the three distribution outputs are output from output terminals 44, 46 and 48, respectively. Switch circuit 3
The output signal C S of 9 is guided to the carrier color signal processing circuit 41 and input to the distributor 43 whose amplitude and frequency characteristics have been adjusted, and is distributed to three distribution outputs, and the three distribution outputs are respectively output terminals.
Output from 45, 47 and 49.
発明の効果 上述したように従来のカラー映像信号処理装置の入出
力は複合映像信号の形態で行なわれており、たとえばNT
SC規格によって輝度信号と色信号の帯域が制限されてい
るし、それぞれの相互干渉による妨害やY/C分離フィル
タなどによる波形歪や回路系の付加雑音が加わり処理さ
れ出力されるカラー映像信号の品質が劣化している。As described above, the input / output of the conventional color video signal processing device is performed in the form of a composite video signal.
The band of the luminance signal and the color signal is limited by the SC standard, and the interference of each mutual interference, the waveform distortion due to the Y / C separation filter, and the additional noise of the circuit system are added to the processed color image signal of the output. The quality is degraded.
本発明によれば、NTSC規格の輝度信号や色信号よりも
広帯域でより臨場感の高いEDTVやHDTVのアスペクト比を
持つ高品質な輝度信号や色信号の処理や出力が可能であ
る。特にVTRなどのカラー映像信号出力が放送波などNTS
C複合映像信号を記録したものでなく、ビデオカメラな
どにおいて特に複合映像信号系を通らないような輝度信
号や色信号である場合には、輝度信号と色信号は常に分
離されたコンポーネント信号として扱われるので本発明
による画質改善の効果は非常に大きい。According to the present invention, it is possible to process and output a high-quality luminance signal or color signal having an aspect ratio of EDTV or HDTV which has a wider sense of presence than a luminance signal or color signal of the NTSC standard. Especially, color video signal output such as VTR is broadcast by NTS
C If a luminance signal or color signal that does not pass through the complex video signal system in a video camera etc. is not recorded as a composite video signal, the luminance signal and the color signal are always treated as separate component signals. Therefore, the effect of improving the image quality according to the present invention is very large.
第１図は本発明の一実施例における要部ブロック図であ
る。 31,33,35……輝度信号入力端子、32,34,36……搬送色信
号入力端子、37……Y/C分離回路、39……スイッチ回
路、42,43……分配回路、44,46,48……輝度信号出力端
子、45,47,49……搬送色信号出力端子。FIG. 1 is a block diagram of essential parts in an embodiment of the present invention. 31,33,35 …… Luminance signal input terminal, 32,34,36 …… Carrier color signal input terminal, 37 …… Y / C separation circuit, 39 …… Switch circuit, 42,43 …… Distribution circuit, 44, 46,48 …… Brightness signal output terminals, 45,47,49 …… Carrier color signal output terminals.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹内 明弘 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 長岡 良富 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 源津 憲昭 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 長崎 左近 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 特開 昭57−65988（ＪＰ，Ａ) 特開 昭59−191550（ＪＰ，Ａ) 実公 昭60−112156（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiro Takeuchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Yoshitomi Nagaoka 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Noriaki Gentsu 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Sakon Nagasaki, 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References 57-65988 (JP, A) JP 59-191550 (JP, A) JP 60-112156 (JP, Y1)
Claims (6)
よりも広い帯域を持った輝度信号と搬送色信号とをそれ
ぞれ分離して入力する第１および第２のコンポーネント
映像信号入力端子と、標準テレビジョン信号である複合
映像信号を入力するコンポジット映像信号入力端子と、
前記コンポジット映像信号入力端子から入力された複合
映像信号ついてY/C分離された輝度信号と搬送色信号
と、前記第１および第２のコンポーネント映像信号入力
端子より入力された輝度信号と搬送色信号とを、それぞ
れ、切り換えて出力するスイッチャ回路と、前記スイッ
チャ回路から出力される輝度信号と搬送色信号とをそれ
ぞれ２つ以上の複数の信号に分配する分配回路と、前記
分配回路により分配された複数の輝度信号と搬送色信号
を１つの組単位として出力する出力端子とを具備するこ
とを特徴とするカラー映像信号処理装置。1. A first and a second component video signal input terminals for separately inputting a luminance signal and a carrier color signal having a band wider than that of a composite video signal which is a standard television signal, and a standard television. A composite video signal input terminal for inputting a composite video signal that is a John signal,
The Y / C separated luminance signal and carrier color signal of the composite video signal input from the composite video signal input terminal, and the luminance signal and carrier color signal input from the first and second component video signal input terminals And a distribution circuit for distributing the luminance signal and the carrier color signal output from the switcher circuit to two or more signals, respectively, and a switcher circuit for switching and outputting A color video signal processing device, comprising: an output terminal for outputting a plurality of luminance signals and a carrier color signal as one set unit.
は、２つの色差信号をNTSC,PALあるいはSECAMなどの複
合映像信号の規格で定まった色副搬送波の周波数の（M/
N）倍の周波数の連続発振信号で直角二相変調された搬
送色信号であることを特徴とする特許請求の範囲第
（１）項記載のカラー映像信号処理装置。2. A carrier color signal, wherein M and N are natural numbers, and two color difference signals have a color subcarrier frequency (M / N / M / N) determined by a composite video signal standard such as NTSC, PAL or SECAM.
The color video signal processing device according to claim (1), which is a carrier color signal which is quadrature two-phase modulated with a continuous oscillation signal of N) times frequency.
調整、DCレベル調整、周波数特性調整を行う輝度信号処
理回路を通過した後、分配回路に導かれることを特徴と
する特許請求の範囲第（１）項記載のカラー映像信号処
理装置。3. A brightness signal input from an input terminal is led to a distribution circuit after passing through a brightness signal processing circuit that performs amplitude adjustment, DC level adjustment, and frequency characteristic adjustment. The color video signal processing device according to item (1).
幅調整、周波数特性調整を行う搬送色信号処理回路を通
過した後、分配回路に導かれることを特徴とする特許請
求の範囲第（１）項記載のカラー映像信号処理装置。4. A carrier color signal input from an input terminal is guided to a distribution circuit after passing through a carrier color signal processing circuit that performs amplitude adjustment and frequency characteristic adjustment. The color video signal processing device according to the item 1).
調整、DCレベル調整、周波数特性調整を行う輝度信号処
理回路を通過した後、出力端子に導かれることを特徴と
する特許請求の範囲第（１）記載のカラー映像信号処理
装置。5. The brightness signal distributed by the distribution circuit is led to an output terminal after passing through a brightness signal processing circuit that performs amplitude adjustment, DC level adjustment, and frequency characteristic adjustment. The color video signal processing device according to (1).
は、振幅調整、周波数特性調整を行う色差信号処理回路
を通過した後、出力端子に導かれることを特徴とする特
許請求の範囲第（１）記載のカラー映像信号処理装置。6. The two color difference signals distributed by the distribution circuit are guided to an output terminal after passing through a color difference signal processing circuit which performs amplitude adjustment and frequency characteristic adjustment. 1) The color video signal processing device as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20569387A JPH0822071B2 (en) | 1987-08-19 | 1987-08-19 | Color video signal processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20569387A JPH0822071B2 (en) | 1987-08-19 | 1987-08-19 | Color video signal processor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61212243A Division JPH0683480B2 (en) | 1986-09-09 | 1986-09-09 | Color video signal transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6372280A JPS6372280A (en) | 1988-04-01 |
| JPH0822071B2 true JPH0822071B2 (en) | 1996-03-04 |
Family
ID=16511145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20569387A Expired - Lifetime JPH0822071B2 (en) | 1987-08-19 | 1987-08-19 | Color video signal processor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0822071B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2999772B2 (en) * | 1988-09-28 | 2000-01-17 | ソニー株式会社 | Selector device |
-
1987
- 1987-08-19 JP JP20569387A patent/JPH0822071B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6372280A (en) | 1988-04-01 |
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Legal Events
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|---|---|---|---|
| EXPY | Cancellation because of completion of term |