JPS58145289A - Frequency separation type color television camera - Google Patents
Frequency separation type color television cameraInfo
- Publication number
- JPS58145289A JPS58145289A JP57027787A JP2778782A JPS58145289A JP S58145289 A JPS58145289 A JP S58145289A JP 57027787 A JP57027787 A JP 57027787A JP 2778782 A JP2778782 A JP 2778782A JP S58145289 A JPS58145289 A JP S58145289A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- color
- eliminate
- color difference
- color television
- 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
- 238000000926 separation method Methods 0.000 title 1
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 238000012935 Averaging Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 102100024066 Coiled-coil and C2 domain-containing protein 1A Human genes 0.000 description 1
- 101000910423 Homo sapiens Coiled-coil and C2 domain-containing protein 1A Proteins 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- 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
- H04N23/12—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from different wavelengths with one sensor only
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
Description
【発明の詳細な説明】
老
単−搬送波による周波数分離形撮像方式のカラーテレビ
ジョンカメラでは、垂直相関の原理によって、赤信号成
分と青信号成分を復調する。DETAILED DESCRIPTION OF THE INVENTION In a color television camera using a frequency-separated imaging system using monocarrier waves, red signal components and blue signal components are demodulated based on the principle of vertical correlation.
しかし、画面全域にわたり相関が完全にとれないと、１
水平走査（以下率ＫＩＨという）毎のレベル差となり、
色ビートまたはフリ、力が発生する０
左だし、ＳＥＣＡＭ方式以外のＮＴＳＯおよびＰＡＬ方
式では特に問題を生じない。ＮＴＳＣ方式では、エンコ
ーダ回路で変調後、クロマ信号をくし形フィルタで平均
化している。また、ＰＡＬ方式では、受像機内のＩＨ遅
延線によシ乎均化している。ＳＥＯＡＭ方式では、Ｒ−
ＹおよびＢ−Ｙの色差信号を、ＩＨ毎に切換える線順次
方式であるため、これと２：１のインタレースとの関係
により、２フレームでおのおのの信号レベルカー周する
ことになる。すなわち５０／４＝１２．５Ｈ２のフリ、
力が相関のとれない部分で発生することになる。However, if the correlation cannot be taken completely over the entire screen, 1
This is the level difference for each horizontal scan (hereinafter referred to as rate KIH),
Since the color beat or force is generated on the left, there are no particular problems with NTSO and PAL systems other than the SECAM system. In the NTSC system, after being modulated by an encoder circuit, the chroma signal is averaged by a comb filter. Furthermore, in the PAL system, the signal is equalized by an IH delay line within the receiver. In the SEOAM method, R-
Since this is a line sequential method in which the Y and B-Y color difference signals are switched for each IH, the relationship between this and the 2:1 interlacing results in each signal level being cycled in two frames. In other words, 50/4=12.5H2,
Forces will occur in uncorrelated areas.
これを防ぐためには、相関をさまたげている搬送波の走
査線間での位相差、各ストライプ色フィルタと走査線と
の交差角、垂直偏向系の偏向サイズ、また復調器内で与
える位相差、水平走査周波数、微小時間遅延線の遅延時
間、水平偏向系の偏向サイズなどの要因の精度を向上し
、誤差をなくすことで実現できる。In order to prevent this, the phase difference between the carrier wave scanning lines that interferes with the correlation, the intersection angle between each stripe color filter and the scanning line, the deflection size of the vertical deflection system, the phase difference given in the demodulator, the horizontal This can be achieved by improving the accuracy of factors such as the scanning frequency, the delay time of the minute time delay line, and the deflection size of the horizontal deflection system, and eliminating errors.
しかし、前記各要因の誤差をなくすことは困難であるた
め、これらの誤差を軽減するか、誤差が互いに打消しあ
うように相対的に軽減するよう調整するかしていた。However, since it is difficult to eliminate errors due to each of the above factors, adjustments have been made to reduce these errors or to relatively reduce them so that they cancel each other out.
このようにして、部品精度の向上１回路構成の複雑化、
調整の微細化をおこなっても色ビートおよびフリッカは
完全に除去することは難しく、特に低価格カメラでは問
題となっていた。In this way, the accuracy of parts is improved.1 The complexity of the circuit configuration is increased.
Even with finer adjustments, it is difficult to completely eliminate color beat and flicker, and this has been a problem, especially in low-priced cameras.
本発明は、前記問題を解消するためになされたものであ
り、その特徴は、Ｒ−ＹおよびＢ−Ｙの色差信号をおの
おの２水平走査を平均化することによりＩＨ毎のレベル
差”をなくする手段を備えたことにある。The present invention has been made to solve the above problem, and its feature is to eliminate the "level difference between IHs" by averaging two horizontal scans of the R-Y and B-Y color difference signals. The reason is that we have the means to do so.
以下実施例とともに本発明の詳細な説明する。The present invention will be described in detail below along with examples.
第１図は、本発明の一実丸例の構成をプロ、りで示す図
である。FIG. 1 is a diagram showing the configuration of a complete example of the present invention in a professional manner.
本実施例は、第１図に示すように、マトリ、クス回路Ｍ
より出力されるＲ−ＹおよびＢ−Ｙの色差信号を入力と
する変調回路１および２と、これに接続されるＩＨ遅延
線６および４と、遅延前の信号と遅延後の信号を加算す
る加算回路５および６と、この出力信号を復調する検波
回路７および８と、これに接続されるローパスフィルタ
回路９および１００回路プロ、りからなり、変復調に副
搬送波信号ｆｓ を前記変調回路１および２．検波回路
７および８に加え、同期検波用のクランプパルスＣ，Ｐ
を前記変調回路１および２．ＩＨ遅延線３および４．検
波回路７および８にそれぞれ加え、同期検波して２水平
走査（以下単に２Ｈという）するように構成したもので
ある。In this embodiment, as shown in FIG.
Modulation circuits 1 and 2 input the R-Y and B-Y color difference signals output from the IH delay lines 6 and 4 connected to the modulation circuits 1 and 2, which add the signals before delay and the signal after delay. It consists of adder circuits 5 and 6, detection circuits 7 and 8 that demodulate the output signals, and low-pass filter circuits 9 and 100 circuits connected to these circuits. 2. In addition to the detection circuits 7 and 8, clamp pulses C and P for synchronous detection
The modulation circuits 1 and 2. IH delay lines 3 and 4. In addition to the detection circuits 7 and 8, it is configured to perform synchronous detection and perform two horizontal scans (hereinafter simply referred to as 2H).
以下、この動作を説明する。This operation will be explained below.
第１図において、Ｒ，−Ｙおよび１３−Ｙの色差信号は
、それぞれ変調回路１および２で副搬送波によって変調
され、Ｉ Ｈ遅延線６および４に出力される。ここで、
色差信号はＩＨ遅延し、次の加算回路５および６でＩＨ
遅延前の信号と加算され、２Ｈ間のレベル差は平均化さ
れる。２ Ｈ平均化したおのおのの色差信号は、次段の
検波回路７およりされる。In FIG. 1, R, -Y and 13-Y color difference signals are modulated by subcarriers in modulation circuits 1 and 2, respectively, and output to IH delay lines 6 and 4. here,
The color difference signal is delayed by IH, and then processed by IH in the next adder circuits 5 and 6.
It is added to the signal before delay, and the level difference between 2H is averaged. Each of the 2H averaged color difference signals is sent to a detection circuit 7 at the next stage.
このように、マトリ、クス回路Ｍとエンコーダ回路ＥＮ
Ｃとの間に、２Ｈ平均化回路を、ｌ’ｔ−Ｙおよび１１
３−Ｙ色差信号系におのおの設けることにｊｔ）、ＩＨ
毎のレベル差を族なくすることが、ＳＥＣＡＭ方式で実
現できる。In this way, the matrix circuit M and the encoder circuit EN
A 2H averaging circuit is connected between l't-Y and 11
3-Y color difference signal system jt), IH
The SECAM method can eliminate level differences between groups.
以上説明したごとく、本発明によれば、ＳＢＣＡＭ方式
において、色ビートおよびフリ、力を除去することが可
能となり、部品の精度向上および回路設計上の誤差向上
、実装上の信号間の干渉対策などはん雑な問題を解決し
、調整を簡易化し部品価格を低減できるなどの効果があ
り、低価格の形
Ｓ ＥＣＡＭ方式周波数分離カラーテレビジョンカ八
メラへ実現できる。As explained above, according to the present invention, it is possible to eliminate color beats, frizz, and force in the SBCAM system, improve component accuracy, improve errors in circuit design, and countermeasures against interference between signals during mounting. It has the effect of solving complicated problems, simplifying adjustment, and reducing component costs, and can be realized as a low-cost SECAM type frequency-separated color television camera.
第１図は、本発明の一実施例の構成をプロ、りで示す図
である。
１．２ 変調回路 ６．４−ＩＨ遅延線５．６ 加算
回路 ７．８ 検波回路９．１０ ローパスフィルタ
回路
Ｍ マトリ、クス回路
Ｆ、ＮＯ・・エンコーダ回路
代理人 弁理士 秋 １）収 喜FIG. 1 is a schematic diagram showing the configuration of an embodiment of the present invention. 1.2 Modulation circuit 6.4-IH delay line 5.6 Addition circuit 7.8 Detection circuit 9.10 Low-pass filter circuit M Matrix, X circuit F, NO... Encoder circuit agent Patent attorney Aki 1) Shu Ki
Claims (1)
よびＢ−Ｙの色差信号をおのおの２水平走査平均化手段
をマトリックス回路とエンコーダ回路の間に設けたこと
を特徴とするカラーテレビジ、ンカメラ。[Claims] A color television using a frequency-separated imaging system. 1. A color television camera characterized in that, in the SEOAM system for a color television camera, two horizontal scanning averaging means for each of l't-Y and B-Y color difference signals are provided between a matrix circuit and an encoder circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57027787A JPS58145289A (en) | 1982-02-23 | 1982-02-23 | Frequency separation type color television camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57027787A JPS58145289A (en) | 1982-02-23 | 1982-02-23 | Frequency separation type color television camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58145289A true JPS58145289A (en) | 1983-08-30 |
Family
ID=12230681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57027787A Pending JPS58145289A (en) | 1982-02-23 | 1982-02-23 | Frequency separation type color television camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58145289A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60127894A (en) * | 1983-12-15 | 1985-07-08 | Matsushita Electric Ind Co Ltd | Recording method of color video signal |
| JPS61100092A (en) * | 1984-10-23 | 1986-05-19 | Hitachi Ltd | Electronic still camera |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4952527A (en) * | 1972-06-16 | 1974-05-22 |
-
1982
- 1982-02-23 JP JP57027787A patent/JPS58145289A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4952527A (en) * | 1972-06-16 | 1974-05-22 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60127894A (en) * | 1983-12-15 | 1985-07-08 | Matsushita Electric Ind Co Ltd | Recording method of color video signal |
| JPS61100092A (en) * | 1984-10-23 | 1986-05-19 | Hitachi Ltd | Electronic still camera |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7474357B1 (en) | Decoding video signals to separate luma and chroma components | |
| JP2773900B2 (en) | Video processing device for NTSC color television camera | |
| US5208662A (en) | Method of encoding color television signal and a circuit therefor | |
| JPS59151592A (en) | Separating circuit of luminance signal and chrominance signal | |
| GB1593912A (en) | Method and arrangement for encoding or decoding an encoded colour video signal in particular in a colour video recording/playback system | |
| US7167213B1 (en) | Comb filter design for separating luminance and chrominance in video signals | |
| JPS58145289A (en) | Frequency separation type color television camera | |
| JPS612488A (en) | Device for separating carrier chrominance signal from luminance signal | |
| US7151574B2 (en) | Optimized structure for digital separation of composite video signals | |
| JPH02108390A (en) | Luminance signal and chrominance signal separating circuit for pal color television signal | |
| JPH0576034A (en) | Picture signal processor | |
| JPS6238390Y2 (en) | ||
| JP2698637B2 (en) | Luminance signal / chrominance signal separation circuit | |
| US3534151A (en) | Means for improving the color rendition in a pal color television system | |
| JPH0424700Y2 (en) | ||
| JPS6329346Y2 (en) | ||
| KR880000842B1 (en) | Comp filter apparatus | |
| JPH04315392A (en) | Vertical false signal suppression system in color camera | |
| JPH059992B2 (en) | ||
| JPH04315391A (en) | Vertical false signal suppression system in color camera | |
| JPH03182188A (en) | Pal color difference demodulation circuit | |
| JPH01213091A (en) | Color demodulating circuit | |
| JPS585095A (en) | Chroma signal processor | |
| JPH0229170A (en) | Video signal processing circuit | |
| JPH04315393A (en) | Vertical false signal suppression system in color camera |