JPH01274582A - Transmission system for picture signal - Google Patents
Transmission system for picture signalInfo
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- JPH01274582A JPH01274582A JP10479588A JP10479588A JPH01274582A JP H01274582 A JPH01274582 A JP H01274582A JP 10479588 A JP10479588 A JP 10479588A JP 10479588 A JP10479588 A JP 10479588A JP H01274582 A JPH01274582 A JP H01274582A
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- 230000005540 biological transmission Effects 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims description 13
- 230000008054 signal transmission Effects 0.000 claims description 7
- 230000002123 temporal effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 description 12
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】 技術分野 本発明は、画像信号の伝送方式に関する。[Detailed description of the invention] Technical field The present invention relates to an image signal transmission method.
背景技術
画像信号の伝送方式のうちの１つとして周知のＮＴＳＣ
方式においては、色信号（以下、Ｃ信号と称す）のうち
Ｉ幀と称される色信号のベクトルの座標軸に対応するい
わゆるＩ信号を１． ５ＭＨ２に帯域制限し、Ｑ軸と称
される色信号のベクトルの座標軸に対応するいわゆるＱ
信号を０．５ＭＨｚに帯域制限し、帯域制限したＩ信号
及びＱ信号によって３．５８ＭＨｚのカラーサブキャリ
ヤを平衡変調して得た搬送色信号を輝度信号（以下、Ｙ
信号と称す）に混合している。ＮＴＳＣ方式による画像
信号の帯域分布を２次元周波数平面に示すと、第１２図
に示す如くなる。第１２図において、ｆｘは水平方向の
２次元周波数すなわち水平方向空間周波数であり、ｆｙ
は垂直方向の２次元周波数すなわち垂直方向空間周波数
である。Ｙ信号は領域Ｇ内に存在し、Ｃ信号は領域Ｇに
含まれている領域Ｈ内に存在し、Ｙ信号とＣ信号とが重
なっている部分が存在する。尚、ＮＴＳＣ方式において
はＹ信号は４．２ＭＨｚに帯域が制限されているので実
際の帯域分布は第１２図と若干異なっている。Background Art NTSC is well-known as one of the image signal transmission systems.
In this method, a so-called I signal corresponding to a coordinate axis of a vector of a color signal (hereinafter referred to as a C signal), which is called an I signal, is 1. The band is limited to 5MH2, and the so-called Q-axis corresponds to the coordinate axis of the color signal vector called the Q-axis.
The carrier color signal obtained by band-limiting the signal to 0.5 MHz and balanced modulating the 3.58 MHz color subcarrier with the band-limited I signal and Q signal is called a luminance signal (hereinafter referred to as Y
signal). When the band distribution of the image signal according to the NTSC system is shown on a two-dimensional frequency plane, it becomes as shown in FIG. In FIG. 12, fx is a horizontal two-dimensional frequency, that is, a horizontal spatial frequency, and fy
is a vertical two-dimensional frequency, that is, a vertical spatial frequency. The Y signal exists in area G, the C signal exists in area H included in area G, and there is a portion where the Y signal and C signal overlap. Note that in the NTSC system, the band of the Y signal is limited to 4.2 MHz, so the actual band distribution is slightly different from that shown in FIG.
以上の如（ＮＴＳＣ方式においては、２次元周波数平面
上でＹ信号帯域とＣ信号帯域とが重なり合っているので
、クロスカラー、ドツト妨害が発生する。As described above, in the NTSC system, since the Y signal band and the C signal band overlap on the two-dimensional frequency plane, cross color and dot interference occur.
そこで、ＹＣ分離方式によってＮＴＳＣ方式による画像
信号のＹ信号帯域とＣ信号帯域とが重なり合わないよう
に分離して画像信号を伝送する方式が考えられている。Therefore, a method has been considered in which the Y-C separation method is used to separate the Y signal band and C signal band of an image signal based on the NTSC method so that they do not overlap, and then transmit the image signal.
このＹＣ分離方式においては帯域分布は第１３図に示す
如くなり、Ｙ信号は領域■内に存在し、Ｃ信号は領域Ｊ
に存在することとなり、９向の２次元周波数が３．５８
ＭＨ２１垂直方向の２次元周波数が５２５本／４となる
ような斜め縞模様のＹ信号は再生できないという欠点が
あった。In this YC separation method, the band distribution is as shown in Fig. 13, where the Y signal exists in the area J, and the C signal exists in the area J.
Therefore, the two-dimensional frequency in 9 directions is 3.58
MH21 had a drawback in that it could not reproduce a Y signal with a diagonal striped pattern in which the two-dimensional frequency in the vertical direction was 525 lines/4.
発明の概要
本発明は、上記した点に鑑みてなされたものであって、
クロスカラー、ドツト妨害が生じることなく画像信号を
伝送することができる画像信号の伝送方式を提供するこ
とを目的とする。Summary of the Invention The present invention has been made in view of the above points, and includes:
An object of the present invention is to provide an image signal transmission system that can transmit image signals without causing cross color or dot interference.
本発明による画像信号の伝送方式は、画像情報の水平方
向空間周波数の基準となる第１座標軸及び垂直方向空間
周波数の基準となる第２座標軸によって表わされる２次
元周波数平面又は第１及び第２座標軸並びに時間方向周
波数の基準となる第３座標軸によって表わされる３次元
周波数空間において輝度信号成分のうちの色信号成分が
占める領域に重なって存在する部分を抜き出して色信号
成分が占める領域以外の他の領域に移し変えて伝送する
ことを特徴としている。The image signal transmission method according to the present invention includes a two-dimensional frequency plane or first and second coordinate axes represented by a first coordinate axis serving as a reference for horizontal spatial frequency of image information and a second coordinate axis serving as a reference for vertical spatial frequency. In addition, in the three-dimensional frequency space represented by the third coordinate axis that serves as the reference for the temporal frequency, a portion of the luminance signal component that overlaps with the area occupied by the color signal component is extracted and other areas other than the area occupied by the color signal component are extracted. It is characterized by being transferred to another area and transmitted.
実施例
以下、本発明の実施例につき第１図乃至第１１図を参照
して詳細に説明する。EXAMPLES Hereinafter, examples of the present invention will be described in detail with reference to FIGS. 1 to 11.
第１図において、１はテレビカメラである。テレビカメ
ラ１は、例えばＲＳＧ、Ｂの３つの原色信号をそれぞれ
出力する３本の撮像管、これら３本の撮像管の出力から
Ｙ信号並びに！信号及びＱ信号を形成するマトリクス回
路、同期信号及びカラーバースト信号を発生する回路等
からなっている。このテレビカメラ１から出力されたＹ
信号は、帯域制限回路２及び３に供給される。帯域制限
回路２は、例えば第２図に示す如き２次元周波数平面上
の領域Ａ内の成分のみを通過させるような周波数特性を
有する２次元ディジタルフィルタと、この２次元ディジ
タルフィルタの入力及び出力をそれぞれディジタル信号
及びアナログ信号に変換するＡ／Ｄ変換器及びＤ／Ａ変
換器とからなっている。また、帯域制限回路３は、例え
ば第３図に示す如き２次元周波数平面上の領域Ｂ内の成
分のみを通過させるような周波数特性を有する２次元デ
ィジタルフィルタと、この２次元ディジタルフィルタの
入力及び出力をそれぞれディジタル信号及びアナログ信
号に変換するＡ／Ｄ変換器及びＤ／Ａ変換器とからなっ
ている。In FIG. 1, 1 is a television camera. The television camera 1 includes, for example, three image pickup tubes that output three primary color signals, RSG and B, respectively, and Y signals and ! from the outputs of these three image pickup tubes. It consists of a matrix circuit that forms signals and Q signals, a circuit that generates synchronization signals and color burst signals, etc. Y output from this TV camera 1
The signals are supplied to band limiting circuits 2 and 3. The band limiting circuit 2 includes, for example, a two-dimensional digital filter having a frequency characteristic that passes only components within a region A on a two-dimensional frequency plane as shown in FIG. 2, and an input and an output of this two-dimensional digital filter. It consists of an A/D converter and a D/A converter that convert into digital and analog signals, respectively. The band limiting circuit 3 also includes a two-dimensional digital filter having a frequency characteristic that passes only the components within a region B on a two-dimensional frequency plane as shown in FIG. It consists of an A/D converter and a D/A converter that convert the output into a digital signal and an analog signal, respectively.
帯域制限回路２の出力は、加算器等からなる混合回路４
に供給される。また、帯域制限回路３の出力は、帯域移
行回路５に供給される。帯域移行回路５は、例えば水平
方向の２次元周波数ｆｘを３．５８ＭＨｚ／２だけ変化
させる周波数変換回路と、垂直方向の２次元周波数ｒｙ
を５２５本／８だけ変化させる周波数変換回路とからな
っており、第３図に示す如き２次元周波数平面上の領域
Ｂ内の成分を領域Ｃ内に移行させる構成となっている。The output of the band limiting circuit 2 is sent to a mixing circuit 4 consisting of an adder, etc.
supplied to Further, the output of the band limiting circuit 3 is supplied to the band shifting circuit 5. The band shifting circuit 5 includes, for example, a frequency conversion circuit that changes the two-dimensional frequency fx in the horizontal direction by 3.58 MHz/2, and a two-dimensional frequency ry in the vertical direction.
The frequency conversion circuit changes the frequency by 525 lines/8, and is configured to shift components in region B on a two-dimensional frequency plane to region C as shown in FIG.
この帯域移行回路５の出力は、混合回路４に供給される
。The output of this band shifting circuit 5 is supplied to a mixing circuit 4.
一方、テレビカメラ１から出力されたＩ信号及びＱ信号
の各々は、帯域制限回路６．７の各々を介してクロマ平
衡変調回路８に供給される。帯域制限回路６．７は、例
えば第４図に示す如き２次元周波数平面上の領域り内の
成分のみを通過させるような周波数特性を有する２次元
ディジタルフィルタと、この２次元ディジタルフィルタ
の入力及び出力をそれぞれディジタル信号及びアナログ
信号に変換するＡ／Ｄ変換器及びＤ／Ａ変換器とからな
っている。クロマ平衡変調回路８において、互いに位相
が９０＠異なる２つの３．５８ＭＨｚの副搬送波をｌ信
号及びＱ信号によってそれぞれ振幅変調して得られる信
号の両側波帯成分のみが取り出されて出力される。この
クロマ平衡変調回路８の出力は、混合回路４に供給され
て帯域制限されたＹ信号と混合される。混合回路４の出
力は、同期及びバースト信号付加回路９に供給されてテ
レビカメラ１から出力される同期信号及びバースト信号
が挿入される。On the other hand, each of the I signal and Q signal output from the television camera 1 is supplied to the chroma balance modulation circuit 8 via each of the band limiting circuits 6.7. The band limiting circuit 6.7 includes, for example, a two-dimensional digital filter having a frequency characteristic that passes only components within a region on a two-dimensional frequency plane as shown in FIG. It consists of an A/D converter and a D/A converter that convert the output into a digital signal and an analog signal, respectively. In the chroma balance modulation circuit 8, only the double sideband components of the signal obtained by amplitude modulating two 3.58 MHz subcarriers whose phases are different from each other by 90@ with the l signal and the Q signal are extracted and output. The output of this chroma balance modulation circuit 8 is supplied to the mixing circuit 4 and mixed with the band-limited Y signal. The output of the mixing circuit 4 is supplied to a synchronization and burst signal addition circuit 9, into which the synchronization signal and burst signal output from the television camera 1 are inserted.
以上の如き送信装置によって得られる信号の各成分の帯
域分布を２次元周波数平面に示すと第５図に示す如くな
る。第５図において領域Ａには輝度信号成分が存在し、
領域Ｂには平衡変調された色信号成分が存在し、領域Ｃ
には領域Ｂから移行された輝度信号成分が存在する。従
って、Ｙ信号とＣ信号とが完全に分離され、クロスカラ
ーやドツト妨害等のＹ信号とＣ信号間のクロストークに
起因する妨害が生じないこととなる。また、水平方向の
２次元周波数が３．５８ＭＨｚ、垂直方向の２次元周波
数が５２５本／４のＹ信号成分は領域Ｃに移行されて伝
送されるので、該Ｙ信号を妨害なしに再生することがで
きる。The band distribution of each component of the signal obtained by the above-mentioned transmitting device is shown on a two-dimensional frequency plane as shown in FIG. In FIG. 5, a luminance signal component exists in area A,
Region B contains balanced modulated color signal components, and region C
There is a luminance signal component transferred from area B. Therefore, the Y signal and the C signal are completely separated, and interference caused by crosstalk between the Y signal and the C signal, such as cross color or dot interference, does not occur. Furthermore, since the Y signal component with a two-dimensional frequency in the horizontal direction of 3.58 MHz and a two-dimensional frequency in the vertical direction of 525 lines/4 is transferred to area C and transmitted, the Y signal can be reproduced without interference. I can do it.
また、ＮＴＳＣ方式においてはＣ信号はｌ信号が１．５
ＭＨｚＳＱ信号が０．５ＭＨｚまでしか伝送できないの
に対して、本発明による方式においてはＣ信号の帯域を
水平方向に１．７９ＭＨｚまで確保できる。In addition, in the NTSC system, the C signal has an l signal of 1.5
While the MHz SQ signal can only be transmitted up to 0.5 MHz, the method according to the present invention can secure the C signal band up to 1.79 MHz in the horizontal direction.
また、ＮＴＳＣ方式による画像信号の再生処理のみが行
なえるモニタテレビ等の画像再生装置に本発明によって
得られる信号を供給した場合、色帯域と重なるようなＹ
信号成分は含まれていないので、クロスカラー妨害は発
生しない。Furthermore, when the signal obtained by the present invention is supplied to an image reproduction device such as a monitor television that can only reproduce image signals according to the NTSC system, Y
Since no signal components are included, cross-color interference does not occur.
次に、本発明による受信装置を第６図に示す。Next, a receiving apparatus according to the present invention is shown in FIG.
同図において、入力信号はＹ分離回路１１．１２及びＣ
分離回路１３に供給される。Ｙ分離回路１１は、例えば
第７図に示す如き２次元周波数平面上の領域Ａ内の成分
のみを通過させるような周波数特性を有する２次元ディ
ジタルフィルタと、この２次元ディジタルフィルタの入
力及び出力をそれぞれディジタル信号及びアナログ信号
に変換するＡ／Ｄ変換器及びＤ／Ａ変換器とからなって
いる。また、Ｙ分離回路１２は、例えば第８図に示す如
き２次元周波数平面上の領域Ｃ内の成分のみを通過させ
るような周波数特性を有する２次元ディジタルフィルタ
と、この２次元ディジタルフィルタの入力及び出力をそ
れぞれディジタル信号及びアナログ信号に変換するＡ／
Ｄ変換器及びＤ／Ａ変換器とからなっている。また、Ｃ
分離回路１３は、例えば第９図に示す如き２次元周波数
平面上の領域Ｂ内の成分のみを通過させるような周波数
特性を有する２次元ディジタルフィルタと、この２次元
ディジタルフィルタの入力及び出力をそれぞれディジタ
ル信号及びアナログ信号に変換するＡ／Ｄ変換器及びＤ
／Ａ変換器とからなっている。In the same figure, input signals are input to Y separation circuits 11 and 12 and C
It is supplied to the separation circuit 13. The Y separation circuit 11 includes, for example, a two-dimensional digital filter having a frequency characteristic that passes only the components within a region A on a two-dimensional frequency plane as shown in FIG. 7, and the input and output of this two-dimensional digital filter. It consists of an A/D converter and a D/A converter that convert into digital and analog signals, respectively. Further, the Y separation circuit 12 includes a two-dimensional digital filter having a frequency characteristic that passes only the components within a region C on a two-dimensional frequency plane as shown in FIG. A/A converting the output into digital and analog signals, respectively.
It consists of a D converter and a D/A converter. Also, C
The separation circuit 13 includes, for example, a two-dimensional digital filter having a frequency characteristic that passes only the components in region B on a two-dimensional frequency plane as shown in FIG. 9, and an input and output of this two-dimensional digital filter, respectively. A/D converter and D to convert into digital signal and analog signal
/A converter.
Ｙ分離回路１１の出力は、加算器等からなる混合回路１
４に供給される。また、Ｙ分離回路１２の出力は、帯域
移行回路１５に供給される。帯域移行回路１５は、例え
ば水平方向の２次元周波数ｆｘを−３，５８ＭＨｚ／２
だけ変化させる周波数変換回路と、垂直方向の２次元周
波数ｆｙを一５２５本／８だけ変化させる周波数変換回
路とからなっており、第８図に示す如き２次元周波数平
面上の領域Ｃ内の成分を領域Ｂ内に移行させる構成とな
っている。この帯域移行回路１５の出力は、混合回路１
４に供給されてＹ分離回路１１の出力と混合され、輝度
信号Ｙが形成される。また、Ｃ分離回路１３の出力は、
同期検波回路等からなる復調回路１６に供給される。こ
の復調回路１６によってｌ信号及びＱ信号が復調される
。The output of the Y separation circuit 11 is sent to a mixing circuit 1 consisting of an adder, etc.
4. Further, the output of the Y separation circuit 12 is supplied to a band shifting circuit 15. For example, the band shifting circuit 15 changes the horizontal two-dimensional frequency fx to −3,58 MHz/2.
It consists of a frequency conversion circuit that changes the two-dimensional frequency fy in the vertical direction by 1525 lines/8, and a frequency conversion circuit that changes the two-dimensional frequency fy in the vertical direction by 1525 lines/8. is configured to move into area B. The output of this band shifting circuit 15 is the output of the mixing circuit 1
4 and is mixed with the output of the Y separation circuit 11 to form a luminance signal Y. Moreover, the output of the C separation circuit 13 is
The signal is supplied to a demodulation circuit 16 consisting of a synchronous detection circuit and the like. This demodulation circuit 16 demodulates the l signal and the Q signal.
以上、画像信号を２次元構造として処理する場合につい
て説明したが、画像信号を３次元構造として処理する場
合は、平衡変調された色信号は第１０図及び第１１図に
それぞれ示す如き３次元周波数空間の領域り内に存在す
る。第１０図及び第１１図において、ｆｔは時間方向の
３次元周波数、ｆｘは水平方向の３次元周波数、ｆｙは
垂直方向の３次元周波数である。領域りは、３次元周波
数空間内の各点を（ｆｔ、ｆｘＳ ｆｙ）で表わすとき
、点ｐ（１５Ｈｚ、３．５８ＭＨｚ、５２５本／４）を
中心とする正八面体の領域である。この領域りの６個の
頂点ａ−ｆのうち点ａ及びｂは、中心点０をｆｘ軸方向
に±３．５８ＭＨｚ／２だけ移動させた位置に存在する
。また、点Ｃ及びｄは、中心点０をｆｙ軸方向に±５２
５本／８だけ移動した位置に存在する。また、点ｅ及び
ｆは、中心点０をｆｔ軸方向に±１５Ｈｚ／２だけ移動
した位置に存在する。The case where the image signal is processed as a two-dimensional structure has been described above, but when the image signal is processed as a three-dimensional structure, the balanced modulated color signal has a three-dimensional frequency as shown in FIGS. 10 and 11, respectively. Exists within the realm of space. In FIGS. 10 and 11, ft is a three-dimensional frequency in the time direction, fx is a three-dimensional frequency in the horizontal direction, and fy is a three-dimensional frequency in the vertical direction. The region is a regular octahedral region centered on the point p (15 Hz, 3.58 MHz, 525 lines/4), where each point in the three-dimensional frequency space is represented by (ft, fxS fy). Points a and b among the six vertices a to f in this area are located at positions where the center point 0 is moved by ±3.58 MHz/2 in the fx axis direction. Also, points C and d are ±52 in the fy axis direction from the center point 0.
It exists at a position moved by 5/8. Further, points e and f exist at positions where the center point 0 is moved by ±15 Hz/2 in the ft-axis direction.
領域りに重なるＹ信号成分は、例えば第１０図に示す如
く領域りに線分ａ−ｃを境界線にして接する領域Ｅに移
行させるか又は第１１図に示す如く領域りと面ａ−ｃ−
ｅを境界にして接する領域Ｆに移行させることにより第
１図の装置と同様の効果が得られる。For example, the Y signal component that overlaps the area may be transferred to the area E, which is in contact with the area using the line segment a-c as a boundary line, as shown in FIG. −
The same effect as that of the device shown in FIG. 1 can be obtained by moving the area F to the adjacent area F with e as the boundary.
以上、ＮＴＳＣ方式の画像信号の伝送について説明した
が、本発明は、ＰＡＬ、ＳＥＣＡＭ等の他の方式の画像
信号の伝送にも適用することができる。Although the transmission of image signals of the NTSC system has been described above, the present invention can also be applied to the transmission of image signals of other systems such as PAL and SECAM.
また、本発明はビデオディスク等の記録媒体により画像
信号を伝送する場合、或いは衛星放送等の如く帯域を広
くすることができる伝送媒体により画像信号を伝送する
場合にも適用することができる。Furthermore, the present invention can be applied to the case where an image signal is transmitted by a recording medium such as a video disk, or the case where an image signal is transmitted by a transmission medium capable of widening the band such as satellite broadcasting.
発明の効果
以上詳述した如く本発明による画像信号の伝送方式は、
画像情報の水平方向空間周波数の基準となる第１座標軸
及び垂直方向空間周波数の基準となる第２座標軸によっ
て表わされる２次元周波数平面又は第１及び第２座標軸
並びに時間方向周波数の基準となる第３座標軸によって
表わされる３次元周波数空間において輝度信号成分のう
ちの色信号成分が占める領域に重なって存在する部分を
抜き出して色信号成分が占める領域以外の他の領域に移
し変えて伝送するので、輝度信号と色信号とが完全に分
離され、クロスカラーやドツト妨害等の輝度信号と色信
号間のクロストークに起因する妨害が生じないこととな
る。また、色信号帯域と重なり合う水平方向の２次元周
波数が３．５８Ｍ Ｈｚ 、垂直方向の２次元周波数が
５２５本／４の輝度信号成分は色信号成分が占める領域
以外の他の領域に移し変えて伝送されるので、該輝度信
号を妨害なしに再生することができる。Effects of the Invention As detailed above, the image signal transmission method according to the present invention has the following effects:
A two-dimensional frequency plane represented by a first coordinate axis serving as a reference for the horizontal spatial frequency of image information and a second coordinate axis serving as the reference for the vertical spatial frequency, or the first and second coordinate axes and a third coordinate axis serving as the reference for the temporal frequency. In the three-dimensional frequency space represented by the coordinate axes, the portion of the luminance signal component that overlaps the area occupied by the color signal component is extracted and transferred to another area other than the area occupied by the color signal component for transmission. The signal and color signal are completely separated, and interference caused by crosstalk between the luminance signal and the color signal, such as cross color or dot interference, does not occur. In addition, the luminance signal component with a horizontal two-dimensional frequency of 3.58 MHz and a vertical two-dimensional frequency of 525 lines/4, which overlaps with the color signal band, is transferred to an area other than the area occupied by the color signal component. Since the luminance signal is transmitted, the luminance signal can be reproduced without interference.
また、ＮＴＳＣ方式においては色信号は工信号が１．５
ＭＨｚ％Ｑ信号が０．５ＭＨｚまでしか伝送できないの
に対して、本発明による方式においては色信号の帯域を
水平方向に１．７９ＭＨｚまで確保できる。In addition, in the NTSC system, the color signal has an engineering signal of 1.5
While the MHz%Q signal can only be transmitted up to 0.5 MHz, the method according to the present invention can secure a color signal band up to 1.79 MHz in the horizontal direction.
また、ＮＴＳＣ方式による画像信号の再生処理のみが行
なえる従来のモニタテレビ等の画像再生装置に本発明に
よって得られる信号を供給した場合、色帯域と重なるよ
うな輝度信号成分は含まれていないので、クロスカラー
妨害は発生しないのである。Furthermore, when the signal obtained by the present invention is supplied to an image reproduction device such as a conventional monitor television that can only reproduce image signals according to the NTSC system, it does not contain luminance signal components that overlap with the color band. , no cross-color interference occurs.
第１図は、本発明による送信装置の一例を示すブロック
図、第２図、第３図及び第４図は、第１図の装置の各部
の動作を示す図、第５図は、第１図の装置の出力の帯域
分布を示す図、第６図は、本発明による受信装置の一例
を示すブロック図、第７図、第８図及び第９図は、第６
図の装置の各部の動作を示す図、第１０図及び第１１図
は、本発明の他の実施例を示す図、第１２図は、ＮＴＳ
Ｃ方式の信号の帯域分布を示す図、第１３図は、適応Ｙ
Ｃ分離方式による信号の帯域分布を示す図である。
出願人 パイオニア株式会社
、 代理人 弁理士 藤村元彦FIG. 1 is a block diagram showing an example of a transmitting device according to the present invention, FIGS. 2, 3, and 4 are diagrams showing the operation of each part of the device in FIG. 1, and FIG. FIG. 6 is a block diagram showing an example of the receiving device according to the present invention, and FIGS.
10 and 11 are diagrams showing other embodiments of the present invention, and FIG. 12 is a diagram showing the operation of each part of the device shown in FIG.
FIG. 13 is a diagram showing the band distribution of the signal of the C method.
FIG. 3 is a diagram showing the band distribution of signals according to the C separation method. Applicant: Pioneer Corporation, agent: Motohiko Fujimura, patent attorney
Claims (2)
なる画像信号の伝送方式であって、画像情報の水平方向
空間周波数の基準となる第１座標軸と、垂直方向空間周
波数の基準となる第２座標軸とによって表わされる２次
元周波数平面において前記輝度信号成分のうちの前記色
信号成分が占める領域に重なって存在する部分を抜き出
して前記色信号成分が占める領域以外の他の領域に移し
変えて伝送することを特徴とする画像信号の伝送方式。(1) A transmission method for an image signal consisting of a luminance signal component and a balanced modulated color signal component, in which the first coordinate axis serves as a reference for the horizontal spatial frequency of image information, and the first coordinate axis serves as a reference for the vertical spatial frequency. In the two-dimensional frequency plane represented by the second coordinate axis, a portion of the luminance signal component that overlaps with the area occupied by the color signal component is extracted and transferred to another area other than the area occupied by the color signal component. An image signal transmission method characterized by transmitting an image signal.
なる画像信号の伝送方式であって、画像情報の水平方向
空間周波数の基準となる第１座標軸と、垂直方向空間周
波数の基準となる第２座標軸と、時間方向周波数の基準
となる第３座標軸によって表わされる３次元周波数空間
において前記輝度信号成分のうちの前記色信号成分が占
める領域に重なって存在する部分を抜き出して前記色信
号成分が占める領域以外の他の領域に移し変えて伝送す
ることを特徴とする画像信号の伝送方式。(2) A transmission method for an image signal consisting of a luminance signal component and a balanced modulated color signal component, in which the first coordinate axis serves as a reference for the horizontal spatial frequency of image information, and the first coordinate axis serves as a reference for the vertical spatial frequency. A portion of the luminance signal component that overlaps with a region occupied by the color signal component is extracted from the luminance signal component in a three-dimensional frequency space represented by a second coordinate axis and a third coordinate axis serving as a reference for the temporal frequency, and the color signal component is extracted. An image signal transmission method characterized by transferring and transmitting an image signal to an area other than the area occupied by the image signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10479588A JPH01274582A (en) | 1988-04-27 | 1988-04-27 | Transmission system for picture signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10479588A JPH01274582A (en) | 1988-04-27 | 1988-04-27 | Transmission system for picture signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01274582A true JPH01274582A (en) | 1989-11-02 |
Family
ID=14390381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10479588A Pending JPH01274582A (en) | 1988-04-27 | 1988-04-27 | Transmission system for picture signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01274582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0233292A (en) * | 1988-07-22 | 1990-02-02 | Matsushita Electric Ind Co Ltd | Television signal processor |
-
1988
- 1988-04-27 JP JP10479588A patent/JPH01274582A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0233292A (en) * | 1988-07-22 | 1990-02-02 | Matsushita Electric Ind Co Ltd | Television signal processor |
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