JPS58205379A - Vertical profile adjusting circuit - Google Patents

Vertical profile adjusting circuit

Info

Publication number
JPS58205379A
JPS58205379A JP57088693A JP8869382A JPS58205379A JP S58205379 A JPS58205379 A JP S58205379A JP 57088693 A JP57088693 A JP 57088693A JP 8869382 A JP8869382 A JP 8869382A JP S58205379 A JPS58205379 A JP S58205379A
Authority
JP
Japan
Prior art keywords
circuit
video signal
signal
weighting
delay 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.)
Pending
Application number
JP57088693A
Other languages
Japanese (ja)
Inventor
Shigehiro Ito
伊藤 茂広
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP57088693A priority Critical patent/JPS58205379A/en
Publication of JPS58205379A publication Critical patent/JPS58205379A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/14Picture signal circuitry for video frequency region
    • H04N5/142Edging; Contouring

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)

Abstract

PURPOSE:To attain the emphasis of profile for both luminance and chrominance components at the same time, by varying the component near an odd number multiple to a component near a frequency being an even number multiple of the frequency of 1/4 of a horizontal scanning frequency and to zero. CONSTITUTION:A video signal applied to an input terminal 1 is given to a delay circuit 2HDL1 and an addition circuit ADD1. The video signal delayed for 2H period at the delay circuit 2HDL1 is given to a delay circuit 2HDL2, a weighting circuit W1 and an addition circuit ADD2. The video signal delayed for 2H at the delay circuit 2HDL2 is applied to the addition circuit ADD1 together with the output of the weighting circuit W1. The output of the addition circuit ADD1 is applied to the addition circuit ADD2 via a weighting circuit W3, summed with the video signal from the delay circuit 2HDL1 and the video signal adjusted for the vertical profile of a picture is outputted.

Description

【発明の詳細な説明】 テレビジョン受+t 機、テレビジョンカメラ、VTt
t、ビデオ・ディスク・プレーヤなどのテレビ7・−E
l 7di 5では、輪郭調整回路によって内生画像の
画賛の調整を行なうこと力;らろ。
[Detailed description of the invention] Television receiver+t machine, television camera, VTt
t, TV 7-E such as video disc player, etc.
In 7di 5, the contour adjustment circuit is used to adjust the contour of the endogenous image.

第1図は、垂直輪郭調整回路の従来例のものの−・例を
示すブロック図であって、この第1区において1は映像
信号の入力端子、2は垂直輪郭調整か施こさねた映像信
号の出力端子であって、入力端T−1に供給された映像
信号は、映像信号におけイ)l水平走査期間(IH)と
対応する時間遅延をit’ll’像信号に与える遅延回
路1)(DL、へ入力信号として供給されるとともに、
加算回路ADI)、へそJlの一人力として供給されろ
FIG. 1 is a block diagram showing an example of a conventional vertical contour adjustment circuit. In this first section, 1 is an input terminal for a video signal, and 2 is a video signal for which vertical contour adjustment has not been performed. The video signal supplied to the input terminal T-1, which is the output terminal of ) (DL, is supplied as an input signal to
The adder circuit ADI) should be supplied as the sole power of navel Jl.

前配しrコ遅延回路IHDL、の出力(5L′iは、I
Hの遅延を映像信号に与えろ遅延回路IHDL2と重み
付は回路W、とへ、そJlぞ土1のものの入力(g号と
して供給さねろと共K、加算回路ADD2へ−そオ]の
一力入力として加えらオIろ1、 重み付は回路W1は、遅延回路IHDL、の出力信号の
撫幅に(−2)の重み付けを行なって加算回路ADD、
に与え、まrこ、加算回路ADD、へは遅延回路IHD
L2の出力信号も加えられている。しrこがって、加算
回路ADD、により加算合成さねて加X回路ADD。
The output of the front delay circuit IHDL (5L'i is I
Give a delay of H to the video signal.The delay circuit IHDL2 and the weighting circuit W, and the input of the circuit 1 (supplied as g, and the input circuit K, to the adder circuit ADD2). The weighting circuit W1 weights the stroke width of the output signal of the delay circuit IHDL by (-2), and adds it to the adder circuit ADD.
, adder circuit ADD, and delay circuit IHD.
The output signal of L2 is also added. Then, the adder circuit ADD performs addition and synthesis, and then the adder circuit ADD.

から出力ざわる信号は、入力端子1に供給された映像信
号の振幅に1の重み付けが施こされている信号と、遅延
回111151HDL、の出力信号の振幅K(−2)の
重み付けが施こされている信号と、遅延回路IHDL2
の出力信賜の奈幅に1の重み付けが施こされている信号
とが加算合成さねrこ信号であり、この加算回路ADD
、からの出力信号は、重み付は回路W2において(−α
)の重み付けが施こさねた後に前記した加算回路ADD
2へそれの他方入力として与えらね、加算回路ADD2
では重み付は回路W2からの出力信号と遅延回路IHD
L、からの出力信号との加算を行なって、それからの出
力信号を出力端子2に送出する。
The output signal from the input terminal 1 is a signal in which the amplitude of the video signal supplied to the input terminal 1 is weighted by 1, and the amplitude of the output signal from the delay circuit 111151HDL is weighted by K(-2). signal and delay circuit IHDL2
The signal in which the width of the output signal is weighted by 1 is the addition-synthesis signal.
The output signal from , is weighted in circuit W2 as (-α
) after weighting is not performed, the adder circuit ADD described above
2 as its other input, the adder circuit ADD2
Then, the weighting is the output signal from the circuit W2 and the delay circuit IHD.
The output signal is added to the output signal from L, and the resulting output signal is sent to output terminal 2.

そして、前記した第1図示の垂直輪郭調整回路におけろ
人、出力端子間の総合特性G(ω)は次の(1)式で示
されるものである。
In the vertical contour adjustment circuit shown in the first diagram, the overall characteristic G(ω) between the output terminal and the output terminal is expressed by the following equation (1).

G(ω)−[1+ 2α(1−(!O8(IJT  )
 〕e J(i)TH・・・・・・(1) rこだし、項は1水平走査期間であり、水平走査周波数
fHの逆数で示される。
G(ω)-[1+2α(1-(!O8(IJT)
] e J (i) TH (1) The term r is one horizontal scanning period, and is expressed as the reciprocal of the horizontal scanning frequency fH.

(1)式で示さねろ総合特性は、直流及び水平走査周波
数fl(の整数倍の周波数では利得が1に固定さ第1、
また、その中間位置における利得が(l+4α)となり
、α〉Oのときには最大値となり、αくOのとぎには最
小値となる余弦波状の振幅特性になる。第2図(b)図
はα〉0の場合の総合特性G(ω)を例示したものでる
る。なお、位相特性は全周波数る。
The overall characteristic shown in equation (1) is that the gain is fixed at 1 at DC and horizontal scanning frequencies fl (integer multiples of the frequency fl).
Further, the gain at the intermediate position is (l+4α), which has a cosine wave-like amplitude characteristic that has a maximum value when α>O and a minimum value when α<O. FIG. 2(b) shows an example of the overall characteristic G(ω) when α>0. Note that the phase characteristics apply to all frequencies.

さて、輝度信号と搬送色信号とが周波数間挿(周波数イ
ンターリ−ピング)さtl rこ状態のものとして構成
されているカラーテレビジョン映像信号は、第2図(a
)図示のよってそれの輝度信号成分が水平走査周波数f
Hの整数倍の位置付近に分布し、まrこ、それの搬送色
信号成分が水平走査周波数石の半奇数倍の位置付近に分
布することは周知のとおりであるから、第1図示の従来
の垂直輪郭調整回路が、例えば第2図(b)図示の工う
に、水平走査周波数f)tの整数倍の位置で最小値をと
り、水平走査周波数fHの半奇数倍の位置で最大値をと
る工うな余弦波状の振幅特性を示すフイlレタを形成す
るよう罠、重み付は回路りにおける重み付けが(貿0と
なされているとき(このときのαは正の値でおる)は、
第2図(a)図と第2図(b)図との対応関係工り明ら
かな工うに、輝度信号成分の側波帯の内でそねの高域成
分の値が増強されろことにエリ輝度信号成分は、第2図
(a)図示の状態から第2図(C)図に示されるような
状態のものへと変形し、画像の垂直方向の輪郭が鮮鋭な
ものとなさねる。
Now, a color television video signal in which a luminance signal and a carrier chrominance signal are configured with frequency interleaving (frequency interleaving) is shown in Fig. 2 (a).
) As shown in the figure, its luminance signal component has a horizontal scanning frequency f
It is well known that the carrier color signal components are distributed near the positions of integral multiples of H, and the carrier color signal components thereof are distributed near the positions of half-odd times of the horizontal scanning frequency. For example, as shown in FIG. 2(b), the vertical contour adjustment circuit of FIG. When the weighting in the circuit is set to 0 (in this case α is a positive value), the weighting is set to form a fillet that exhibits a cosine wave-like amplitude characteristic.
It is clear from the correspondence between Figure 2(a) and Figure 2(b) that the value of the higher frequency component within the sideband of the luminance signal component is enhanced. The brightness signal component transforms from the state shown in FIG. 2(a) to the state shown in FIG. 2(C), and the vertical contour of the image becomes sharp.

ところが、第2図(b)図の振幅特性で最大値を示す部
分に存在している搬送色信号成分についてみるとそれの
側波帯の内で中心位置付近の成分が大きく増強されて、
側波帯の高域成分が相対的に小さな値となるため(第2
図Cd1図参照)に、色信号に工ろ画像の垂直方向の輪
郭はなまったものになる。
However, when we look at the carrier color signal component existing in the part where the amplitude characteristic in FIG. 2(b) shows the maximum value, the component near the center position in the sideband is greatly enhanced
Because the high-frequency components of the sidebands have relatively small values (second
(See Figure Cd1), the vertical contour of the image becomes dull due to color signals.

このように、第1図示の従来例回路では、αが正のとぎ
、すなわち、重み付は回路W2における重−IL付けが
(−α)となされている場合には、輝度1−;号による
画像の垂直輪郭を強調させる方向での!RIM輪郭の調
整が行なわれるのと同時に、色信号しくニ五ろ画像の垂
直輪郭をなまらせろ方向での垂直輪郭の調整が行なわれ
るのである。
In this way, in the conventional example circuit shown in FIG. In a direction that emphasizes the vertical contours of the image! At the same time that the RIM contour is adjusted, the vertical contour is adjusted in the direction of dulling the vertical contour of the two-color image in the same way as the color signal.

また、第1図示の従来例回路でα乞負として、すなわち
、重み付は回路W2における重み付けが(−(−α))
=αとなさねている場合には、前述とは逆に、輝度信号
による画像の垂直輪郭をなまらせろ方向で垂直輪郭の調
整が行なわねるのと同時に、色信号による画像の垂直輪
郭を強調させる方向での垂直輪郭の調整が行なわ灼ろの
である。
In addition, in the conventional example circuit shown in FIG. 1, the weighting in the circuit W2 is (-(-α))
= α, contrary to the above, the vertical contour of the image is not adjusted in the direction of dulling the vertical contour of the image using the luminance signal, and at the same time, the vertical contour of the image is emphasized using the color signal. Adjustment of the vertical contour in the direction of the burn is done.

しrこがって、第1図示の従来例の垂直輪郭調整回路は
、輝度信号と搬送色信号とが周波斂間挿さねでいる信号
形態のカラーテレビジョン映像信号を入力信号に用いて
垂直輪郭調整を行なう場合に支障がめる、ということが
判かろ。また、輝度信号と搬送色信号とを櫛型濾波器で
分離し、その分離された輝度信号を入力信号に用いて、
第1図示の従来例の垂直輪郭調整回路にエリ垂直輪郭調
整を行なうようにする場合でも、垂直輪郭の強調のため
にαの値、を大きくしたときに、輝度信号中に残留して
いる微小な搬送色信号成分が大きくなされてしまい、輝
度信号と色信号との分離度を悪化させるという問題点が
ある。
Therefore, the conventional vertical contour adjustment circuit shown in FIG. Do you know that this will cause problems when making contour adjustments? In addition, the luminance signal and the carrier color signal are separated by a comb filter, and the separated luminance signal is used as the input signal.
Even when performing vertical contour adjustment in the conventional vertical contour adjustment circuit shown in Figure 1, when the value of α is increased to emphasize the vertical contour, minute There is a problem in that the carrier color signal component becomes large, which deteriorates the degree of separation between the luminance signal and the color signal.

本発明は、上Geのような問題点のない垂直輪郭調整回
路を提供することを目的としてなされたものであり、以
下、添付図面を参照しながら本発明回路の具体的な内容
について詳細に説明する。
The present invention has been made for the purpose of providing a vertical contour adjustment circuit that does not have the above-mentioned problems.Hereinafter, the specific content of the circuit of the present invention will be explained in detail with reference to the accompanying drawings. do.

第3図及び第4図は、本発明の垂直輪郭調整回路の各異
なる実施態様のブロック図であり、各図において、既述
した第1図示の(ロ)路の構成部分と対応する同一構成
部分には第1図中で使用した図面符号と同一の図面符号
を付しである。
3 and 4 are block diagrams of different embodiments of the vertical contour adjustment circuit of the present invention, and in each figure, the same structure corresponds to the component of path (b) shown in the first diagram. The parts are given the same drawing numbers as those used in FIG. 1.

第3図及び第4図において、2HDL、 、 2HDL
2は、映像信号におけろ水平走査期間(IH)の2倍の
時間遅延を映像信号に与えうる工うに構成されている第
1.第2の遅延回路であり、また、1は入力端子、2は
出力端子、ADD2 は加算回路である。
In Figures 3 and 4, 2HDL, , 2HDL
2 is configured to provide a time delay twice as long as the horizontal scanning period (IH) to the video signal. It is a second delay circuit, 1 is an input terminal, 2 is an output terminal, and ADD2 is an adder circuit.

また、第3図におけるW、 、 W3と第4図における
W、 、 W、などはそねぞれ重み付は回路であり、さ
らに、第3図におけるADD、や第4図におけるADD
3゜ADD4 は加算回路である。
In addition, W, , W3 in Fig. 3 and W, , W, etc. in Fig. 4 are weighted circuits, and furthermore, ADD in Fig. 3 and ADD in Fig. 4
3°ADD4 is an adder circuit.

第3図に示す本発明の実施例回路において、入力端子1
に供給された映像信号は、第1の遅延回g 2HDL、
と加算回路ADD、 とに与えられている。
In the circuit according to the embodiment of the present invention shown in FIG.
The video signal supplied to the first delay circuit g2HDL,
and an adder circuit ADD.

第1の遅延回路2HDL、は映像信号が2H期間だけ遅
延された第1の遅延映像信号を出力し、それを第2の遅
延回路2HDL2と重み付は回路W、と加算回路ADD
2 とに与える。
The first delay circuit 2HDL outputs a first delayed video signal in which the video signal is delayed by a 2H period, and outputs it to the second delay circuit 2HDL2, the weighting circuit W, and the adder circuit ADD.
2 Give to.

第2の遅延回路2HDL2は、前記しfこ第1の遅延−
映像信号%−2H期間だけ遅延させ、第2の遅延映像信
号として出力し、そ1を加算回路ADD、  に与える
。重み付は回路W、は、第1の遅延映像信号シC(−2
)の重み付けを施こし1からそねを加算回路ADD、に
与える。
The second delay circuit 2HDL2 is connected to the first delay circuit 2HDL2.
The video signal is delayed by a period of %-2H, outputted as a second delayed video signal, and the first delayed video signal is given to the adder circuit ADD. The weighting is the circuit W, and the weighting is the first delayed video signal C(-2
) are applied to the adder circuit ADD.

しrこがって、加算回路ADD、からの出力信号は、振
幅に1ニー2:1の重み付けが施こさt]rこ、映像信
号と、第1の遅延映像信号と、第2の遅延映像信号とが
加算合成されている信号であり、この加算回路ADD、
からの出力信号は、それに重み付は回路W3において所
要の重み付けが施こさねた後に、加算回路ADD2 へ
与えられる。
Therefore, the output signal from the adder circuit ADD is weighted with a ratio of 1 to 2 to the amplitude. It is a signal that is added and synthesized with a video signal, and this adder circuit ADD,
The output signal from the circuit W3 is subjected to necessary weighting in the circuit W3, and then applied to the adder circuit ADD2.

今、第3図示の実施例回路において、重み付は回路W3
で−βの重み付けが信号に対して施こされろものとして
、人、出力端子1.2間の総合特性Q(ω)?示すと次
の(2)式のとおりである。
Now, in the embodiment circuit shown in the third figure, the weighting is performed by the circuit W3.
Assuming that −β weighting is applied to the signal, the overall characteristic Q(ω) between the person and the output terminals 1 and 2? The following equation (2) is shown.

Q(cc+)= [1+ 2βい−cos 2ωT、)
 〕ej2(TH・、・・、6)(ただし、−は水平走
査期間である。)そして、前記した総合特性Q(ω)の
振幅特性は、βが正の場合に第5図(b)図に示すよう
なもの、すなわち、総合特性Q(ω)の振幅特性は、映
像信号の水平走査周波数fHの4分の1の周波数を基準
の周零)及び基準の周波数fの偶毅倍の周波数において
利得が1に固定され、また、基準の周波数f3の奇数倍
の周波数において利得が(1+4β)となり、β〉0の
ときに最大値、β〈0のときに最小第5図(al因は、
輝度信号と搬送色信号とが周波V間挿されているカラー
テレビジョン映像信号におけろ輝度信号成分と搬送色信
号成分とのエネルギ分布を示す図であり、これは既述し
た第2図(a1図と同じである。
Q(cc+) = [1+ 2β-cos 2ωT,)
]ej2(TH・,...,6) (where - is the horizontal scanning period.)The amplitude characteristic of the above-mentioned overall characteristic Q(ω) is as shown in FIG. 5(b) when β is positive. As shown in the figure, the amplitude characteristic of the overall characteristic Q(ω) is the frequency of one quarter of the horizontal scanning frequency fH of the video signal as the reference frequency (zero) and the frequency of the reference frequency f even times The gain is fixed at 1 at the frequency, and the gain is (1+4β) at odd multiples of the reference frequency f3, with the maximum value when β>0 and the minimum value when β<0. teeth,
This is a diagram showing the energy distribution of the luminance signal component and the carrier chrominance signal component in a color television video signal in which the luminance signal and the carrier chrominance signal are interpolated at a frequency of V, and this is similar to the previously mentioned FIG. 2 ( It is the same as figure a1.

第3図示の本発明の実施例回路において、βが正の場合
における回路の総合特性Q(ω)は、前記の工うに第5
図(b1図に示すような振幅特性を示すから、この第5
区(b)図示の余弦波状の振幅特性と第5図(、)図に
示す信号のスペクトル分布とを対応させてみると、輝度
信号成分と搬送色信号成分との双方のものについて、そ
れらにおける側波帯の中高域成分が増強さねることが判
かろ。
In the circuit according to the embodiment of the present invention shown in FIG. 3, the overall characteristic Q(ω) of the circuit when β is positive is the fifth
Since the amplitude characteristics shown in Figure (b1) are shown, this fifth
When comparing the amplitude characteristics of the cosine wave shown in Fig. 5 (b) with the spectral distribution of the signal shown in Fig. You can see that the middle and high frequency components of the sidebands are not enhanced.

そして、前記した輝度信号成分と搬送色信号成分との双
方のものにおける側波帯の中高域成分が増強される度合
いは、βの値を正の方向で大ぎくすればするけど大きく
なることはいうまでもなく、輝度信号による画像の垂直
方向の輪郭と色信号に工ろ画像の垂直方向の輪郭との双
方が同様に強調てれるのである。
The degree to which the middle and high frequency sideband components of both the luminance signal component and the carrier color signal component described above are enhanced can be increased by increasing the value of β in the positive direction, but it cannot be increased. Needless to say, both the vertical contour of the image by the luminance signal and the vertical contour of the image by the color signal are emphasized in the same way.

第5図(c)図は輝度信号成分の側波帯の中高域成分の
増強の状態を図示説明した図であり、また第5図(d1
図は搬送色信号成分の側波帯の中高域成分の増強の状態
を図示説明した図である。
FIG. 5(c) is a diagram illustrating and explaining the state of enhancement of the middle and high frequency components of the sideband of the luminance signal component, and FIG.
The figure is a diagram illustrating and explaining the state of enhancement of the middle and high frequency components of the sideband of the carrier color signal component.

前述の場合とは逆に、βが負となされたときには輝度信
号成分と搬送色信号成分との双方の側波帯の中高域成分
が減少されること、になるから、画像の垂直方向の輪郭
が輝度信号による画像と色信号による画像との双方につ
いて同様にぼけることKなろ。
Contrary to the above case, when β is negative, the mid-high frequency components of the sidebands of both the luminance signal component and carrier chrominance signal component are reduced, so the vertical contour of the image It is true that both the image based on the luminance signal and the image based on the color signal are blurred in the same way.

このように、Ia3図示の垂直輪郭調整回路では、輝度
信号に工ろ画像と、色信号による画像との双方の画像に
ついて、垂直方向の輪郭の調整力;同じLうに行なわれ
るので、既述した従来の問題点は良好に解消さねろので
ある。
In this way, in the vertical contour adjustment circuit shown in Ia3, the vertical contour adjustment power is the same for both the image processed by the luminance signal and the image formed by the color signal. The problems of the past have yet to be resolved satisfactorily.

第4図は、本発明の垂直輪郭調整回路の他の実施?lI
を示すブロフク図であり、この第4図示の実施ν1]回
路では、入力端子1に供給さねた映像信号と、第2の遅
延映像信号とを加算回路ADD、において加算し、前記
の加算回路ADD3からの出力信fjに重み付は回路凧
で−05の重み付けを行なった後に加算回路ADD4に
与える。また、加算回路ADD、では前記の重み付は回
路W、から与えられた信号と第1の遅延映像信号とを加
算合成した信号を出力して、それを重み付は回路W、に
与え、重み付は回路W、では信号にγの重み付けを行な
った後に加算回路ADD2に与えろ。加算回路ADD、
、からの出力信号は出力端子2に送出される。
FIG. 4 shows another implementation of the vertical contour adjustment circuit of the present invention. lI
In the implementation ν1] circuit shown in the fourth figure, the video signal that was not supplied to the input terminal 1 and the second delayed video signal are added in the adder circuit ADD, and the adder circuit The output signal fj from ADD3 is weighted by -05 using a circuit kite and then applied to the adder circuit ADD4. Further, the adder circuit ADD outputs a signal obtained by adding and synthesizing the signal given from the weighting circuit W and the first delayed video signal, and gives it to the weighting circuit W. Attached is circuit W, which weights the signal by γ and then supplies it to adder circuit ADD2. adder circuit ADD,
, is sent to output terminal 2.

そして、この第4図示の実施例回路の人、出力端子1.
2間の総合特性はQ(ω)次の(3)式で示されろ。
The output terminal 1 of the circuit according to the fourth embodiment shown in FIG.
The overall characteristic between the two is expressed by the following equation (3) with Q(ω).

Q(cc+)=[1+r (1−cos 2ωTH) 
) e−j2″H・−・(3)(3)式におけるrが2
βと等しければ、第3図示の実施例回路について示した
既述の(2)式と同じになる。
Q(cc+)=[1+r (1-cos 2ωTH)
) e−j2″H・−・(3) r in equation (3) is 2
If it is equal to β, it becomes the same as the above-mentioned equation (2) shown for the embodiment circuit shown in the third figure.

なお、本発明の実施に当って第3図示の実施例回路や第
4図示の実施例回路を2個直列に接続して使用すると、
第5図(b)図に示す余弦波状の振幅特性は、それの2
乗特性となるから、さらに切れ味の良い重上がり特性?
有する振幅特性となり、輝度信号成分や搬送色信号成分
などの側波帯の中高域成分だ対する増強や減少の態様を
既述した場合と異ならせろことができろ。
In addition, when using the embodiment circuit shown in the third figure and the embodiment circuit shown in the fourth figure connected in series in carrying out the present invention,
The cosine wave-like amplitude characteristic shown in Fig. 5(b) is 2
Is it a multiplication characteristic, so it has a sharpening characteristic that makes it even sharper?
It is possible to make the mode of enhancement or reduction of the mid-to-high frequency components of sidebands such as the luminance signal component and the carrier color signal component different from those described above.

まrこ、本発明の垂直輪郭調整回路は、櫛型濾波器など
を用いて輝度信号と搬送色信号とに分離された個々の信
号を入力信号として垂直輪郭調整を行なうこともできる
ことはいうまでもなく、この場合には2つの信号の分離
度を変えることなく、そ第1ぞわの信号の画像の輪郭を
調整することができろ。
It goes without saying that the vertical contour adjustment circuit of the present invention can perform vertical contour adjustment using individual signals separated into a luminance signal and a carrier color signal as input signals using a comb filter or the like. In this case, the outline of the image of the first signal can be adjusted without changing the degree of separation between the two signals.

本発明回路の構成に用いらねイ)遅延回路や重み付は回
路、加算回路などは任意な構成のものを使用することが
できるが、遅延回路としては、信号がアナログ信号の場
合には、例えばCCDやBBDなとのような電荷転送素
子を用いることができ、まfこ、信号がデジタル信号の
場合にはシフトレンスタを遅延回路に用いてもよい。ま
た、重み付は回路は、信号がアナログ信号の場合には増
幅器で、まrこ信号がデジタル信号の場合には乗算器で
そわを構成することができる。さらに、加算回路は信号
がアナログ信号のときには、抵抗加算器または差動増幅
器で、また信号がデジタル信号のとぎには加算器でそれ
を構成できる。信号がアナログ信シ;のときには重み付
は回路と加算回路とを差動増幅器などで一体的に構成す
ることもできる。
(Not used in the configuration of the circuit of the present invention) Delay circuits, weighting circuits, addition circuits, etc. can be of any configuration, but as a delay circuit, if the signal is an analog signal, For example, a charge transfer element such as a CCD or a BBD can be used, and if the signal is a digital signal, a shift lens star may be used as the delay circuit. Further, the weighting circuit can be configured with an amplifier when the signal is an analog signal, and a multiplier when the signal is a digital signal. Furthermore, the summing circuit can be configured with a resistive adder or a differential amplifier when the signal is an analog signal, and with an adder when the signal is a digital signal. When the signal is an analog signal, the weighting circuit and the adding circuit can be integrally constructed using a differential amplifier or the like.

以上、詳細に説明しrこところから明らかな、cへ(・
二、本発明の垂直輪郭調整回路は、輝度信号成分と搬送
色信号成分とに対して同時;こ同様な輪郭調整効果を及
ぼすことができるので、良好な垂直輪郭調整を容易に行
なうことができ、まrこ、遅延回路の遅延時間を変更す
るだけで簡単に従来回路におきかえることも可能でおり
、さらに、回路構成は集積回路化が容易であるから、小
型化でき、かつ、安価に提供できろ。
From the detailed explanation above, it is clear that c.
2. The vertical contour adjustment circuit of the present invention can simultaneously exert a similar contour adjustment effect on the luminance signal component and the carrier color signal component, so that good vertical contour adjustment can be easily performed. It is possible to easily replace the conventional circuit by simply changing the delay time of the delay circuit, and since the circuit configuration is easy to integrate, it can be miniaturized and provided at low cost. You can do it.

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

第1図は従来例回路を示すブロック図、第2図(a)〜
(d1図及び第5図(a)〜(di図は説明用波形図、
第3図及び第4図は本発明の垂直輪郭調整回路の6異な
る実施態様のブー22図である。
Figure 1 is a block diagram showing a conventional example circuit, Figure 2 (a) -
(Figure d1 and Figures 5 (a) to (di are explanatory waveform diagrams,
3 and 4 are diagrams 22 of six different embodiments of the vertical contour adjustment circuit of the present invention.

Claims (1)

【特許請求の範囲】 1 映像信号における水平走査期間数の4分の1の周波
数を基準の周波Vとしたときに、零及び前記の基準の周
波数の偶数倍の周波数近傍の成分に対し、前記の基準の
周波数の奇数倍の周波数近傍の成分を相対的シこ可変で
きるような濾波器を構成し、画像の■直方向の輪郭を調
整するようにした垂直輪郭調整回路 2 それぞれ人力映像信号における水平走査期間の2倍
の時間遅延を映慮信号に与えうる第1゜第2の遅延回路
を直列に接続し、入力映像信号と、入力映像信号が第1
の遅延回路に工って2水平走査期間だけ遅延さ第1rこ
第1の遅延映像信号と、前5e第1の遅延映1−イご号
が第2の遅延回路によって烙らに2水平走食期間だけ遅
延さねたW、2の遅延映像信号とを得ろ手段と、前記し
た入力映像信号と、第1の遅延映像信号と、第2の遅延
映像信号との3倍号を、そねらの振幅比率が1ニー2:
tとなるように重み付けが行なわねた状態で加算合成す
る手段と、前記の加算合成手段からの出力信号について
、重み付けの値が可変となi t+でいる重み付は回路
に工って所要の重み付け?施こす手段と、前記の重み付
は回路からの出力信号と第1の遅延映像信号と’t 1
10 Kする手段とからなる垂直輪郭調整回路
[Scope of Claims] 1. When the frequency of one-fourth of the number of horizontal scanning periods in the video signal is taken as the reference frequency V, the above-mentioned Vertical contour adjustment circuit 2 configured to adjust the vertical contour of the image by configuring a filter that can relatively vary the frequency components near odd multiples of the reference frequency. A first delay circuit and a second delay circuit capable of giving a time delay twice as long as the horizontal scanning period to the consideration signal are connected in series, and the input video signal and the input video signal are connected to the first delay circuit.
The first delayed video signal of 1r and the first delayed video signal of 5e are delayed by two horizontal scanning periods by the delay circuit of Means for obtaining a delayed video signal W delayed by the eclipse period, 3 times the input video signal, the first delayed video signal, and the second delayed video signal. The amplitude ratio of 1 knee 2:
The means for adding and synthesizing in a state where no weighting is performed so that the weighting value is variable, i and the output signal from the above-mentioned adding and synthesizing means, and the weighting that is t+ is modified into a circuit to obtain the required Weighting? means for applying the weighting to the output signal from the circuit, the first delayed video signal and 't 1
10. A vertical contour adjustment circuit comprising:
JP57088693A 1982-05-25 1982-05-25 Vertical profile adjusting circuit Pending JPS58205379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57088693A JPS58205379A (en) 1982-05-25 1982-05-25 Vertical profile adjusting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57088693A JPS58205379A (en) 1982-05-25 1982-05-25 Vertical profile adjusting circuit

Publications (1)

Publication Number Publication Date
JPS58205379A true JPS58205379A (en) 1983-11-30

Family

ID=13949919

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57088693A Pending JPS58205379A (en) 1982-05-25 1982-05-25 Vertical profile adjusting circuit

Country Status (1)

Country Link
JP (1) JPS58205379A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584600A (en) * 1982-10-06 1986-04-22 Itt Industries, Inc. Digital filter for the chrominance channel of a color-television set
JPS6182593A (en) * 1984-08-31 1986-04-26 Olympus Optical Co Ltd Two-dimensional frequency band correction circuit in endoscope using solid-state image pickup element
US5159442A (en) * 1989-10-04 1992-10-27 Sony Corporation Color signal processing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4584600A (en) * 1982-10-06 1986-04-22 Itt Industries, Inc. Digital filter for the chrominance channel of a color-television set
JPS6182593A (en) * 1984-08-31 1986-04-26 Olympus Optical Co Ltd Two-dimensional frequency band correction circuit in endoscope using solid-state image pickup element
US5159442A (en) * 1989-10-04 1992-10-27 Sony Corporation Color signal processing apparatus

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