JPS6046688A - Color video camera - Google Patents
Color video cameraInfo
- Publication number
- JPS6046688A JPS6046688A JP58155199A JP15519983A JPS6046688A JP S6046688 A JPS6046688 A JP S6046688A JP 58155199 A JP58155199 A JP 58155199A JP 15519983 A JP15519983 A JP 15519983A JP S6046688 A JPS6046688 A JP S6046688A
- Authority
- JP
- Japan
- Prior art keywords
- color
- color difference
- pulses
- circuits
- video camera
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/74—Circuits for processing colour signals for obtaining special effects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/10—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はセカム方式のカラービデオカメラに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a SECAM color video camera.
従来の構成とその問題点
従来、ＮＴＳＣ方式のカラービデオカメラで、はカラー
タイトル表示が採用されているが、ＮＴＳＣ方式のよう
な振ｌ〕変調方式とは異々るセカム方式の場合、ＦＭ変
調方式となっており、ＮＴＳＣ方式の方法でもってカラ
ータイトル表示をおこなうわけには行かない。Conventional configuration and its problems Traditionally, NTSC color video cameras have adopted color title display, but in the case of the SECAM system, which is different from the NTSC system's modulation system, FM modulation is required. It is not possible to display color titles using the NTSC method.
発明の目的
本発明はカラータイトル表示を行なえるようにしたセカ
ム方式のカラービデオカメラを提供するものである。OBJECTS OF THE INVENTION The present invention provides a SECAM type color video camera capable of displaying color titles.
発明の構成
上記目的を達成するために、本発明はカラー色に対応す
るアナログ電圧をキャラクタパルスのクリップレベル入
力とし、そのクリップされた出力を色差信号にミキシン
グするようにしたものである。Structure of the Invention In order to achieve the above object, the present invention uses an analog voltage corresponding to a color as a clip level input of a character pulse, and mixes the clipped output into a color difference signal.
実施例の説明
以下図面の一実施例により説明する。第１図において１
，２はＹ−Ｒ，Ｂ−Ｙの色差信号が加わる端子、３はキ
ャラクタパルスが加わる端子、４゜６はキャラクタゲー
ト、６，７はディジタル信号ボリュウム、あるいは階段
電圧等を利用して選択されたカラー選択入力が加わる端
子、８，９はキャラクタパルスとカラー選択入力とを入
力し、Ｙ−ＲＥ−Ｙのタイトルカラー信号（色差）（ル
ス）を作る回路、１０，１１はゲート４，６の出力と色
差パルス回路８，９の出力とをミキシングするタイトル
カラー信号ミキソング回路、１２は色差順次回路、１３
はＦＭ変調回路、１４はキャラクタミキシング回路、１
６はクロマ・輝度ミキシング回路である。DESCRIPTION OF EMBODIMENTS The following will explain one embodiment of the present invention with reference to the drawings. In Figure 1, 1
, 2 are terminals to which Y-R and B-Y color difference signals are applied, 3 is a terminal to which character pulses are applied, 4°6 is a character gate, and 6 and 7 are selected using digital signal volume or step voltage. Terminals 8 and 9 are circuits to which character pulses and color selection inputs are input, and generate Y-RE-Y title color signals (color difference). Gates 10 and 11 are gates 4 and 6. 12 is a color difference sequential circuit;
is an FM modulation circuit, 14 is a character mixing circuit, 1
6 is a chroma/luminance mixing circuit.
以下、上記構成の動作を説明する。まず、入力端子１，
２に加わる色差信号（Ｙ−Ｒ，Ｂ−Ｙ）とキャラクタパ
ルスをゲート４，６に加えて、図に示すような信号にす
る。一方、色差ノ＜１１７回路８．９により、キャラク
タパルスをカラー選択入力にもとすいて希望の色の振幅
をもった色差ノ＜ルスに変換する。The operation of the above configuration will be explained below. First, input terminal 1,
The color difference signals (Y-R, B-Y) added to 2 and the character pulses are added to gates 4 and 6 to produce a signal as shown in the figure. On the other hand, the color difference pulse 117 circuit 8.9 converts the character pulse into a color difference pulse having the amplitude of the desired color by using it as a color selection input.
この状態でミキシング回路１０．１１により、ゲート４
，６の出力と色差パルス回路８，９の出力とをミキシン
グし、これを色差順次回路１２に加えるとその出力は図
のようになる。以後色差順次回路１２の出力はＦＭ変調
器１３でＦＭ変調され、ミキシング回路１６で輝度信号
とミキシングされ、セカムカラー信号になる。In this state, the mixing circuit 10.11 controls the gate 4.
, 6 and the outputs of the color difference pulse circuits 8 and 9 are mixed and added to the color difference sequential circuit 12, the output becomes as shown in the figure. Thereafter, the output of the color difference sequential circuit 12 is subjected to FM modulation by an FM modulator 13, and mixed with a luminance signal by a mixing circuit 16 to become a second color signal.
この場合、色差パルス回路８，９は第２図のようにキャ
ラクタパルスと階段電圧を入力とするクリップ回路８１
．９１とし、希望色に応じた電圧をクリンプ回路８１．
９１に加えるようにすれば、色差信号化回路８２．９２
からは希望の色の振巾全もった色差パルスが得られる。In this case, the color difference pulse circuits 8 and 9 are replaced by a clip circuit 81 which inputs the character pulse and step voltage as shown in FIG.
．． 91, and the voltage corresponding to the desired color is applied to the crimp circuit 81.
If added to 91, color difference signal conversion circuit 82.92
From this, a color difference pulse with the full desired color amplitude is obtained.
なお階段電圧の代りに、ボリュウムを使用すればカラー
信号を連続的に変えることができる。Note that if a volume is used instead of a step voltage, the color signal can be changed continuously.
発明の効果
以上実施例により説明したが、本発明によればカラータ
イトル表示がおこなえる一方、色差信号をキャラクタ部
分だけ変えてやる方法をとっているためにその構成も容
易である。なお、カラータイトル用の色信号は色順次化
し、これを色順次化したＹ−Ｒ，Ｂ−Ｙにミキシングす
るようにしてもよい。Effects of the Invention The embodiments have been described above. According to the present invention, a color title display can be performed, and since a method of changing only the character portion of the color difference signal is adopted, the configuration is easy. Note that the color signal for the color title may be color-sequentially converted and mixed into color-sequentially Y-R and B-Y.
第１図は本発明の一実施例におけるカラービデオカメラ
の要部ブロック図、第２図は第１図の一部の詳細なブロ
ック図である。FIG. 1 is a block diagram of main parts of a color video camera according to an embodiment of the present invention, and FIG. 2 is a detailed block diagram of a portion of FIG. 1.
Claims (3)
パルスのクリップのクリップレベル入力トシ、そのクリ
ップされた出力を色差信号にミキシングする手段を設け
たカラービデオカメラ。(1) A color video camera provided with means for inputting an analog voltage corresponding to a color at a clip level for clipping a character pulse, and mixing the clipped output into a color difference signal.
変された電圧からなる特許請求の範囲第１項記載のカラ
ービデオカメラ。(2) The color video camera according to claim 1, wherein the analog voltage is a stepped voltage or a voltage variable with a volume.
した出力と色順次化された色差信号とを特徴とする特許
請求の範囲第１項記載のカラービデオカメラ。(3) The color video camera according to claim 1, wherein the mixing means outputs a color-sequential output of the clipped signal and a color-sequential color difference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58155199A JPS6046688A (en) | 1983-08-24 | 1983-08-24 | Color video camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58155199A JPS6046688A (en) | 1983-08-24 | 1983-08-24 | Color video camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6046688A true JPS6046688A (en) | 1985-03-13 |
Family
ID=15600661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58155199A Pending JPS6046688A (en) | 1983-08-24 | 1983-08-24 | Color video camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6046688A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6154322A (en) * | 1998-02-19 | 2000-11-28 | Canon Kabushiki Kaisha | Zoom lens and photographing apparatus having the same |
| US6934092B1 (en) | 1998-02-19 | 2005-08-23 | Canon Kabushiki Kaisha | Zoom lens and photographing apparatus having the same |
-
1983
- 1983-08-24 JP JP58155199A patent/JPS6046688A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6154322A (en) * | 1998-02-19 | 2000-11-28 | Canon Kabushiki Kaisha | Zoom lens and photographing apparatus having the same |
| US6934092B1 (en) | 1998-02-19 | 2005-08-23 | Canon Kabushiki Kaisha | Zoom lens and photographing apparatus having the same |
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