JPH07177526A - Video signal processor - Google Patents
Video signal processorInfo
- Publication number
- JPH07177526A JPH07177526A JP5320010A JP32001093A JPH07177526A JP H07177526 A JPH07177526 A JP H07177526A JP 5320010 A JP5320010 A JP 5320010A JP 32001093 A JP32001093 A JP 32001093A JP H07177526 A JPH07177526 A JP H07177526A
- Authority
- JP
- Japan
- Prior art keywords
- edge
- signal
- video signal
- mode
- detected
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 4
- 238000003708 edge detection Methods 0.000 abstract description 7
- 239000011159 matrix material Substances 0.000 description 9
- 239000003086 colorant Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は映像信号処理回路に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal processing circuit.
【0002】[0002]
【従来の技術】従来、単板式カメラ信号処理回路におい
てよく用いられる処理として、マトリクス方式または原
色分離方式と呼ばれるものがある。これは、Mg,G
r,Cy,Yeの4色の補色モザイクフィルタを受光面
に張ったCCD等の固体撮像素子の信号から、RGB3
原色信号の形で表された色情報を得るものである。2. Description of the Related Art Conventionally, a process often used in a single-chip camera signal processing circuit is called a matrix system or a primary color separation system. This is Mg, G
From the signals of the solid-state image sensor such as CCD in which the complementary color mosaic filters of four colors of r, Cy and Ye are stretched on the light receiving surface, RGB3
It obtains color information represented in the form of primary color signals.
【0003】[0003]
【発明が解決しようとする課題】上記補色モザイクフィ
ルタを用いた従来の技術では、色キャリア周波数と感度
が高いという利点がある一方、色キャリアの振幅が小さ
いという欠点があり、特に上記マトリクス方式で3原色
信号を生成した場合、BLのS/Nが最も悪く、次いで
RL,GLの順となっており、こうした色によるS/Nの
差が、広帯域輝度信号を含めた最終的な映像信号の画質
に悪影響を及ぼすという問題があった。The conventional technique using the complementary color mosaic filter has the advantage of high color carrier frequency and high sensitivity, but has the disadvantage of small amplitude of the color carrier. When the three primary color signals are generated, the S / N ratio of B L is the worst, followed by R L and G L , and the S / N difference due to these colors is the final difference including the broadband luminance signal. There is a problem that the image quality of the video signal is adversely affected.
【0004】[0004]
【課題を解決するための手段及び作用】上記問題点に鑑
み、本発明ではマトリクス方式により求めたRGB3原
色信号に対して異なる周波数特性のフィルタをかけるこ
とにより、色S/Nを改善する。ただし、上記各RGB
信号に対し、異なる周波数特性のフィルタをかけると、
エッジ部分等の高周波領域では偽色が生ずるので、エッ
ジ部分等では上記フィルタをかけずに偽色を生じさせな
いようにする。さらに、上記エッジ部分等の検出にあた
っては、高輝度時は、γ変換前のダイナミックレンジの
広い映像信号から検出し、低照度時は、映像レベルの強
調されるγ変換後の映像信号から検出することにより、
ダイナミックレンジによらずエッジ検出をうまく行える
ようにするものである。なお、上記マトリクス方式によ
り求めたRGB3原色信号に、広帯域輝度信号を加える
ことにより生成した、疑似的な広帯域RGB信号に対し
て、異なる周波数特性のフィルタをかける場合も含むも
のである。In view of the above problems, the present invention improves the color S / N by filtering the RGB three primary color signals obtained by the matrix method with different frequency characteristics. However, each of the above RGB
If you filter the signals with different frequency characteristics,
Since false color is generated in a high frequency area such as an edge portion, the false color is not generated in the edge portion without applying the filter. Further, in detecting the edge portion and the like, when the luminance is high, it is detected from the video signal having a wide dynamic range before the γ conversion, and when the illuminance is low, it is detected from the video signal after the γ conversion in which the image level is emphasized. By
This makes it possible to perform edge detection well regardless of the dynamic range. The pseudo wideband RGB signal generated by adding the wideband luminance signal to the RGB three-primary color signals obtained by the matrix method is also filtered by different frequency characteristics.
【0005】[0005]
【実施例】図1は、本発明の第1の実施例であり、請求
項(1)〜(4)に関して、単板式カメラ信号処理装置
に適したものである。まず、図1において、1はCCD
撮像素子、2はA/Dコンバータ、3は同時化回路、4
はマトリクス、5−1は第1の加算器、5−2は第2の
加算器、5−3は第3の加算器、6は第1の低域通過フ
ィルタ、7は第1の遅延素子、8はエッジ検出手段、9
は第2の低域通過フィルタであり、9−1はR、9−2
はG、9−3はBの低域通過フィルタ、10は9の低域
通過フィルタとの位相差を合わせる第2の遅延素子であ
り、10−1はR、10−2はG、10−3はBの遅延
素子、11はスイッチであり、11−1はR、11−2
はG、11−3はBのスイッチ、12−1はR信号出力
端子、12−2はG信号出力端子、12−3はB信号出
力端子である。FIG. 1 shows a first embodiment of the present invention, which is suitable for a single-chip camera signal processing device with respect to claims (1) to (4). First, in FIG. 1, 1 is a CCD
Image sensor 2, 2 A / D converter, 3 synchronization circuit, 4
Is a matrix, 5-1 is a first adder, 5-2 is a second adder, 5-3 is a third adder, 6 is a first low-pass filter, and 7 is a first delay element. , 8 are edge detection means, 9
Is a second low pass filter, 9-1 is R, 9-2
Is G, 9-3 is a B low-pass filter, 10 is a second delay element that matches the phase difference with the 9 low-pass filter, 10-1 is R, 10-2 is G, 10- 3 is a delay element of B, 11 is a switch, 11-1 is R, 11-2
Is a G switch, 11-3 is a B switch, 12-1 is an R signal output terminal, 12-2 is a G signal output terminal, and 12-3 is a B signal output terminal.
【0006】次に本発明の第1の実施例の動作について
説明する。1のCCD出力信号は、2のA/Dコンバー
タによりディジタル化されたのち、3の同時化回路と6
の第1の低域通過フィルタに加えられる。まず、3の同
時化回路では、CCD出力信号に含まれる色キャリア成
分から、2つの色差信号CR,CBおよび狭帯域輝度信号
YLが生成される。3の同時化回路が出力したYL,
CR,CBは、4のマトリクスで狭帯域3原色信号RL,
GL,BLに変換される。6の第1の低域通過フィルタで
は、前記CCD出力信号の色キャリア成分を抑圧した広
帯域輝度信号YHが生成され、7の第1の遅延素子と8
のエッジ検出手段に加えられる。7の第1の遅延素子
は、前記YHの位相を、同時化とマトリクス演算で余分
に遅延した前記RL,GL,BLの位相に合わせる。5の
加算器は、位相を合わせた前記RL,GL,BLと前記YH
を加算して疑似広帯域3原色信号RGBを生成する。1
1のスイッチの入力端子Aには9の第2の低域通過フィ
ルタにより帯域制限したRGBが入力され、入力端子B
には10の第2の遅延素子により位相調整されただけの
RGBが入力されている。ここで、9の第2の低域通過
フィルタの遮断周波数は、9−3の低域通過フィルタの
遮断周波数が最も低く、9−2の低域通過フィルタの遮
断周波数を最も高く設定してあるため、B信号に最も多
く含まれる色ノイズ成分が抑圧される。8のエッジ検出
手段は、前記YHからエッジ部分をモニタし、エッジを
検出しない場合には11のスイッチをAとし、検出した
場合にはBとする。したがって画像のエッジが検出され
た場合には9の第2の低域通過フィルタを通らないRG
B信号が12の出力端子から出力されるため、エッジ部
分の偽色の発生が抑えられ、画像のエッジが検出されな
ければ、9の第2の低域通過フィルタを通ったRGB信
号が12の出力端子から出力されるため、色のS/Nの
良い画像が得られる。Next, the operation of the first embodiment of the present invention will be described. The CCD output signal of 1 is digitized by the A / D converter of 2 and then the synchronization circuit of 3 and 6
Of the first low pass filter of First, in the third synchronization circuit, two color difference signals C R and C B and a narrow band luminance signal Y L are generated from the color carrier component included in the CCD output signal. Y L output by the synchronization circuit of 3,
C R and C B are four-matrix narrow band three primary color signals R L ,
It is converted into G L and B L. The first low pass filter 6 generates a wide band luminance signal Y H in which the color carrier component of the CCD output signal is suppressed, and the first delay element 7 and 8
Edge detection means. A first delay element 7 adjusts the phase of the Y H to the phases of the R L , G L , and B L which are delayed by the synchronization and the matrix operation. The adder 5 has the phases R L , G L , and B L and the Y H
Are added to generate a pseudo wideband three primary color signal RGB. 1
RGB whose band is limited by the second low pass filter 9 is input to the input terminal A of the switch 1 and input terminal B
RGB of which only the phase has been adjusted by the second delay elements of 10 are input to. Here, the cut-off frequency of the second low-pass filter 9 is set such that the cut-off frequency of the low-pass filter 9-3 is the lowest and the cut-off frequency of the low-pass filter 9-2 is the highest. Therefore, the color noise component most included in the B signal is suppressed. The edge detecting means 8 monitors the edge portion from the Y H, and when the edge is not detected, the switch 11 is set to A, and when it is detected, it is set to B. Therefore, if the edge of the image is detected, the RG that does not pass through the second low pass filter 9
Since the B signal is output from the 12 output terminals, the occurrence of false color at the edge portion is suppressed, and if the edge of the image is not detected, the RGB signal passed through the second low-pass filter 9 is Since the image is output from the output terminal, an image with good color S / N can be obtained.
【0007】〔他の実施例〕図2は、本発明の第2の実
施例であり、請求項(1)〜(5)に関して、単板式カ
メラ信号処理装置に適用したものである。図2におい
て、1はCCD撮像素子、2はA/Dコンバータ、3は
同時化回路、4はマトリクス、5は第1のγ変換回路で
あり、5−1はR、5−2はG、5−3はBのγ変換回
路、6−1は第1の加算器、6−2は第2の加算器、6
−3は第3の加算器、7は第1の低域通過フィルタ、8
は第2のγ変換回路、9は第1の遅延素子、10は広帯
域輝度信号YHのレベル検出手段、11は第1のスイッ
チ、12はエッジ検出手段、13は第2の低域通過フィ
ルタであり、13−1はR、13−2はG、13−3は
Bの低域通過フィルタ、14は13の低域通過フィルタ
との位相差を合わせる第2の遅延素子であり、14−1
はR、14−2はG、14−3はBの遅延素子、15は
第2のスイッチであり、15−1はR、15−2はG、
15−3はBのスイッチ、16−1はR信号出力端子、
62−2はG信号出力端子、16−3はB信号出力端子
である。[Other Embodiments] FIG. 2 shows a second embodiment of the present invention, which is applied to a single-chip type camera signal processing device according to claims (1) to (5). In FIG. 2, 1 is a CCD image pickup device, 2 is an A / D converter, 3 is a synchronization circuit, 4 is a matrix, 5 is a first γ conversion circuit, 5-1 is R, 5-2 is G, 5-3 is a B γ conversion circuit, 6-1 is a first adder, 6-2 is a second adder, 6
-3 is a third adder, 7 is a first low pass filter, 8
Is a second γ conversion circuit, 9 is a first delay element, 10 is a level detecting means for the broadband luminance signal Y H , 11 is a first switch, 12 is edge detecting means, and 13 is a second low pass filter. , 13-1 is R, 13-2 is G, 13-3 is B low-pass filter, 14 is a second delay element for matching the phase difference with the 13 low-pass filter, 14- 1
Is R, 14-2 is G, 14-3 is a delay element of B, 15 is a second switch, 15-1 is R, 15-2 is G,
15-3 is a B switch, 16-1 is an R signal output terminal,
62-2 is a G signal output terminal and 16-3 is a B signal output terminal.
【0008】次に本発明の第1の実施例の動作について
説明する。1のCCD出力信号は、2のA/Dコンバー
タによりディジタル化されたのち、3の同時化回路と7
の第1の低域通過フィルタに加えられる。まず、3の同
時化回路では、CCD出力信号に含まれる色キャリア成
分から、2つの色差信号CR,CBおよび狭帯域輝度信号
YLが生成される。3の同時化回路が出力したYL,
CR,CBは、4のマトリクスで狭帯域3原色信号RL,
GL,BLに変換され、5の第1のγ変換回路によりγ変
換される。Next, the operation of the first embodiment of the present invention will be described. The CCD output signal of 1 is digitized by the A / D converter of 2 and then the synchronization circuit of 3 and 7
Of the first low pass filter of First, in the third synchronization circuit, two color difference signals C R and C B and a narrow band luminance signal Y L are generated from the color carrier component included in the CCD output signal. Y L output by the synchronization circuit of 3,
C R and C B are four-matrix narrow band three primary color signals R L ,
It is converted into G L and B L , and is gamma converted by the first gamma converter circuit 5.
【0009】一方、7の第1の低域通過フィルタでは、
前記CCD出力信号の色キャリア成分を抑圧した広帯域
輝度信号YHが生成され、8の第2のγ変換回路を通じ
て9の第1の遅延素子に加えられる。9の第1の遅延素
子は、前記YHの位相を、同時化とマトリクス演算で余
分に遅延した前記RL,GL,BLの位相に合わせる。On the other hand, in the first low pass filter 7
The CCD wideband luminance signal Y H of a color carrier component has been suppressed in the output signal is generated and added to the first delay element 9 through the second γ conversion circuit 8. The first delay element 9 matches the phase of the Y H with the phases of the R L , G L , and B L , which are delayed by the synchronization and the matrix operation.
【0010】6の加算器は、位相を合わせた前記RL,
GL,BLと前記YHを加算して疑似広帯域3原色信号R
GBを生成する。15の第2のスイッチの入力端子Cに
は13の第2の低域通過フィルタにより帯域制限したR
GBが入力され、入力端子Dには14の第2の遅延素子
により位相調整されただけのRGBが入力されている。
ここで、13の第2の低域通過フィルタの遮断周波数
は、13−3の低域通過フィルタの遮断周波数が最も低
く、13−2の低域通過フィルタの遮断周波数を最も高
く設定してあるため、B信号に最も多く含まれる色ノイ
ズ成分が抑圧される。The adder of 6 has the phase-matched R L ,
G L , B L and Y H are added to generate a pseudo wideband three primary color signal R
Generate GB. The input terminal C of the 15th second switch has an R band-limited by the 13th second low-pass filter.
GB is input, and RGB whose phase is adjusted by 14 second delay elements is input to the input terminal D.
Here, the cutoff frequency of the second low-pass filter 13 is set such that the cut-off frequency of the low-pass filter 13-3 is the lowest and the cut-off frequency of the low-pass filter 13-2 is the highest. Therefore, the color noise component most included in the B signal is suppressed.
【0011】8の第2のγ変換回路でγ変換される前の
広帯域輝度信号(図2のYH1)は、11の第1のスイッ
チの入力端子Bに加えられ、γ変換された後の広帯域輝
度信号(図のYH2)は、11の第1のスイッチの入力端
子Aに加えられる。11の第1のスイッチは、10のレ
ベル検出手段の出力により切り換えられる。10のレベ
ル検出手段は前記YH2のレベルが所定の値より小さい場
合には、11の第1のスイッチがA側にONするように
動作し、前記YH2のレベルが所定の値以下であれば、1
1の第1のスイッチがB側にONするように動作する。
したがって、12のエッジ検出手段に入力されるY
Hは、高輝度の場合にはγ変換前(図のYH1)、低照度
の場合はγ変換後(図2のYH2)の信号が入力されるた
め、前記YHのダイナミックレンジによらず、エッジ検
出を容易に行うことができる。The wide band luminance signal (Y H1 in FIG. 2) before being gamma converted by the second gamma conversion circuit 8 is applied to the input terminal B of the first switch 11 and is gamma converted. The broadband luminance signal (Y H2 in the figure) is applied to the input terminal A of the eleventh first switch. The first switch of 11 is switched by the output of the level detecting means of 10. When the level of Y H2 is smaller than a predetermined value, the level detecting means 10 operates so that the first switch 11 is turned on to the A side, and the level of Y H2 is below a predetermined value. If 1
The first switch No. 1 operates so as to be turned on to the B side.
Therefore, Y input to the twelve edge detection means
H is before gamma conversion in the case of high luminance (figure Y H1), since the signal after conversion in case of low illuminance gamma (in Y H2 Figure 2) is input, depending on the dynamic range of the Y H Instead, edge detection can be performed easily.
【0012】12のエッジ検出手段は、前記YH1または
YH2からエッジ部分をモニタし、エッジを検出しない場
合には15スイッチをCとし、検出した場合にはDとす
る。したがって画像のエッジが検出された場合には13
第2の低域通過フィルタを通らないRGB信号が16の
出力端子から出力されるため、エッジ部分の偽色の発生
が抑えられ、画像のエッジが検出されなければ、13の
第2の低域通過フィルタを通ったRGB信号が16の出
力端子から出力されるため、色のS/Nの良い画像が得
られる。The twelve edge detecting means monitors the edge portion from the Y H1 or Y H2 , and sets 15 switches to C when no edge is detected, and sets D to 15 when the edge is detected. Therefore, if an edge of the image is detected,
Since the RGB signal that does not pass through the second low-pass filter is output from the 16 output terminals, the occurrence of false color in the edge portion is suppressed, and if the edge of the image is not detected, the second low-pass signal of 13 is generated. Since the RGB signal that has passed through the pass filter is output from 16 output terminals, an image with good color S / N can be obtained.
【0013】[0013]
【発明の効果】以上説明したように、本発明によれば、
疑似的な広帯域RGB信号を生成した場合において、R
GB各信号に対して異なる周波数特性のフィルタをかけ
ることにより、色S/Nが改善され、かつ画像のエッジ
部分等の高周波領域での偽色を抑圧することができる。
さらに、上記エッジ部分等の検出にあたっては、高輝度
時は、γ変換前のダイナミックレンジの広い映像信号か
ら検出し、低照度時は、映像レベルの強調されるγ変換
後の映像信号から検出することにより、ダイナミックレ
ンジによらずエッジ検出がうまく行える。As described above, according to the present invention,
When a pseudo wideband RGB signal is generated, R
By applying filters having different frequency characteristics to each GB signal, the color S / N is improved, and false color in the high frequency region such as the edge portion of the image can be suppressed.
Further, in detecting the edge portion and the like, when the luminance is high, it is detected from the video signal having a wide dynamic range before the γ conversion, and when the illuminance is low, it is detected from the video signal after the γ conversion in which the image level is emphasized. As a result, edge detection can be successfully performed regardless of the dynamic range.
【図1】本発明の第1の実施例を示す図。FIG. 1 is a diagram showing a first embodiment of the present invention.
【図2】本発明の第2の実施例を示す図。FIG. 2 is a diagram showing a second embodiment of the present invention.
Claims (5)
を加算することにより、疑似的な広帯域RGB信号を生
成する手段を備えた映像信号処理装置であって、 前記疑似的な広帯域RGB信号、あるいは前記狭帯域R
GB信号の周波数帯域を所定の帯域に制限する第1のモ
ードと、制限しない第2のモードを備えることを特徴と
する映像信号処理装置。1. A video signal processing device comprising means for generating a pseudo wideband RGB signal by adding a wideband luminance signal to a narrowband RGB signal, wherein the pseudo wideband RGB signal comprises: Alternatively, the narrow band R
A video signal processing device comprising a first mode for limiting a frequency band of a GB signal to a predetermined band and a second mode for not limiting the frequency band.
帯域が、RGB各信号で異なることを特徴とする請求項
(1)記載の映像信号処理装置。2. The video signal processing device according to claim 1, wherein in the first mode, the predetermined band is different for each RGB signal.
し、前記画像のエッジ部分を検出する手段の検出結果に
基づいて第1のモードと第2のモードを切り換えること
を特徴とする請求項(1)記載の映像信号処理装置。3. The method according to claim 1, further comprising means for detecting an edge portion of the image, wherein the first mode and the second mode are switched based on a detection result of the means for detecting the edge portion of the image. (1) The video signal processing device as described above.
して、γ変換前の映像信号を用いる第3のモードと、γ
変換後の映像信号を用いる第4のモードを更に備えるこ
とを特徴とする請求項(1)記載の映像信号処理装置。4. A third mode in which a video signal before γ conversion is used as a video signal provided to the edge detecting means, and γ
The video signal processing device according to claim 1, further comprising a fourth mode in which the converted video signal is used.
輝度レベル検出手段の検出結果に基づいて第3のモード
と第4のモードを切り換えることを特徴とする請求項
(1)記載の映像信号処理装置。5. The image according to claim 1, further comprising image brightness level detection means, and switching between the third mode and the fourth mode based on a detection result of the brightness level detection means. Signal processing device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32001093A JP3507110B2 (en) | 1993-12-20 | 1993-12-20 | Video signal processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32001093A JP3507110B2 (en) | 1993-12-20 | 1993-12-20 | Video signal processing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07177526A true JPH07177526A (en) | 1995-07-14 |
JP3507110B2 JP3507110B2 (en) | 2004-03-15 |
Family
ID=18116747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32001093A Expired - Fee Related JP3507110B2 (en) | 1993-12-20 | 1993-12-20 | Video signal processing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3507110B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7652701B2 (en) | 2000-03-14 | 2010-01-26 | Fujifilm Corporation | Solid-state honeycomb type image pickup apparatus using a complementary color filter and signal processing method therefor |
-
1993
- 1993-12-20 JP JP32001093A patent/JP3507110B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7652701B2 (en) | 2000-03-14 | 2010-01-26 | Fujifilm Corporation | Solid-state honeycomb type image pickup apparatus using a complementary color filter and signal processing method therefor |
Also Published As
Publication number | Publication date |
---|---|
JP3507110B2 (en) | 2004-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5712680A (en) | Image pickup device for obtaining both moving and still images | |
JPH0823543A (en) | Image pickup device | |
JP2003032695A (en) | Image signal processor | |
JPH03114388A (en) | Color image pickup device | |
JP2002159015A (en) | Horizontal profile signal generating circuit for single- plate type color camera | |
JPH0779476B2 (en) | Luminance signal Color signal separation circuit | |
JP3507110B2 (en) | Video signal processing device | |
US4646139A (en) | Color image pickup apparatus with color filter array comprising filter elements of three different colors arranged to provide reduced folding distortion | |
JPH0294988A (en) | Luminance signal and chrominance signal separation circuit | |
JP3126743B2 (en) | Signal interpolator | |
JPH08275185A (en) | Contour correction circuit | |
JP4214558B2 (en) | Imaging device | |
JP3452712B2 (en) | Single color video camera | |
JPH06141337A (en) | Digital signal processing camera | |
JP2557511B2 (en) | Motion detection circuit for television display screen | |
JPS6265570A (en) | Device for special effect of video | |
JP2655436B2 (en) | Color solid-state imaging device | |
JPH06133188A (en) | Video signal processing circuit | |
JPH0898189A (en) | Video signal processing circuit | |
JPS62125792A (en) | Comb-line filter for y/c separation | |
JPH06197240A (en) | Video signal processor | |
JPH05316522A (en) | Ccd camera | |
JPH01319387A (en) | Luminance signal chrominance signal separation circuit | |
JPH08340543A (en) | Solid-state image pickup device | |
JP2000201356A (en) | Luminance signal and color signal separating circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20030715 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20031216 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20031218 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081226 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081226 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091226 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091226 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101226 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111226 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121226 Year of fee payment: 9 |
|
LAPS | Cancellation because of no payment of annual fees |