JPH0236265U - - Google Patents
Info
- Publication number
- JPH0236265U JPH0236265U JP11560588U JP11560588U JPH0236265U JP H0236265 U JPH0236265 U JP H0236265U JP 11560588 U JP11560588 U JP 11560588U JP 11560588 U JP11560588 U JP 11560588U JP H0236265 U JPH0236265 U JP H0236265U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- contour
- video signal
- input video
- control signal
- 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
Links
- 230000003321 amplification Effects 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000003111 delayed effect Effects 0.000 description 1
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図及び第２図は本考案の輪郭補償回路の夫
々第１及び第２実施例のブロツク構成図、第３図
は本考案回路の動作説明用信号波形図、第４図は
遅延された映像信号波形と輪郭信号との関係を示
す信号波形図、第５図は従来回路の動作説明用信
号波形図、第６図は従来及び本考案の輪郭補償回
路が適用されるビデオカメラの輝度信号処理回路
のブロツク系統図、第７図は従来の代表的な輪郭
補償回路のブロツク構成図、第８図Ａ〜Ｆは第７
図の従来回路各部の信号波形図、第９図Ａ，Ｂは
輪郭抽出回路と遅延回路の具体的回路構成図、第
１０図は本考案の輪郭補償回路の他の実施例のブ
ロツク構成図である。
１０……輪郭補償回路、１１……輪郭抽出回路
、１２……制御信号生成回路、１３……可変増幅
回路、１４……合成回路、１５，１７，１８……
デイレイライン（遅延回路）、１６……γ補正回
路。
1 and 2 are block configuration diagrams of the first and second embodiments of the contour compensation circuit of the present invention, FIG. 3 is a signal waveform diagram for explaining the operation of the circuit of the present invention, and FIG. 4 is a delayed signal waveform diagram. A signal waveform diagram showing the relationship between a video signal waveform and a contour signal, FIG. 5 is a signal waveform diagram for explaining the operation of a conventional circuit, and FIG. 6 is a luminance signal of a video camera to which the conventional contour compensation circuit and the contour compensation circuit of the present invention are applied. FIG. 7 is a block diagram of a typical conventional contour compensation circuit, and FIGS.
9A and 9B are specific circuit configuration diagrams of the contour extraction circuit and delay circuit, and FIG. 10 is a block configuration diagram of another embodiment of the contour compensation circuit of the present invention. be. 10... Contour compensation circuit, 11... Contour extraction circuit, 12... Control signal generation circuit, 13... Variable amplification circuit, 14... Synthesis circuit, 15, 17, 18...
Delay line (delay circuit), 16...γ correction circuit.
Claims (1)
抽出回路と、上記入力映像信号の周波数及びレベ
ルに応じた制御信号を生成する制御信号生成回路
と、該得られた制御信号により上記輪郭抽出回路
の増幅率を制御する可変増幅回路と、該可変増幅
回路の出力信号を上記映像信号を遅延させた映像
信号に加算する合成回路とを備え、上記入力映像
信号の周波数やレベルが変化しても常にほぼ一定
な輪郭補償を行なうよう構成したことを特徴とす
る輪郭補償回路。 (2) 可変増幅回路の出力信号をガンマ補正して
合成回路に出力するガンマ補正回路を更に備えた
ことを特徴とする実用新案登録請求の範囲第１項
記載の輪郭補償回路。[Claims for Utility Model Registration] (1) A contour extraction circuit that extracts contour components from an input video signal, a control signal generation circuit that generates a control signal according to the frequency and level of the input video signal, and a variable amplification circuit that controls the amplification factor of the contour extraction circuit using a control signal obtained from the input video signal; and a synthesis circuit that adds the output signal of the variable amplification circuit to the video signal obtained by delaying the video signal. A contour compensation circuit characterized in that it is configured to always perform approximately constant contour compensation even if the frequency or level changes. (2) The contour compensation circuit according to claim 1, further comprising a gamma correction circuit that gamma-corrects the output signal of the variable amplifier circuit and outputs the gamma correction circuit to the synthesis circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11560588U JPH0236265U (en) | 1988-09-02 | 1988-09-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11560588U JPH0236265U (en) | 1988-09-02 | 1988-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0236265U true JPH0236265U (en) | 1990-03-08 |
Family
ID=31357417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11560588U Pending JPH0236265U (en) | 1988-09-02 | 1988-09-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0236265U (en) |
-
1988
- 1988-09-02 JP JP11560588U patent/JPH0236265U/ja active Pending
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