JPH0693782B2 - Camera device - Google Patents
Camera deviceInfo
- Publication number
- JPH0693782B2 JPH0693782B2 JP60056711A JP5671185A JPH0693782B2 JP H0693782 B2 JPH0693782 B2 JP H0693782B2 JP 60056711 A JP60056711 A JP 60056711A JP 5671185 A JP5671185 A JP 5671185A JP H0693782 B2 JPH0693782 B2 JP H0693782B2
- Authority
- JP
- Japan
- Prior art keywords
- information
- illumination
- correction
- light
- light source
- 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.)
- Expired - Lifetime
Links
- 238000012937 correction Methods 0.000 claims description 46
- 238000005286 illumination Methods 0.000 claims description 44
- 238000000034 method Methods 0.000 claims 1
- 230000005457 Black-body radiation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001228 spectrum Methods 0.000 description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
Landscapes
- Color Television Image Signal Generators (AREA)
- Processing Of Color Television Signals (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は電子式カメラ装置等のカメラ装置に関し、特に
そのホワイトバランス調整に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera device such as an electronic camera device, and more particularly to white balance adjustment thereof.
従来の技術 従来のカメラ装置について、第３図を用いて説明する。
第３図に従来のカメラ装置の回路ブロックを示す。第３
図において、301は撮像素子、302は撮像素子301の出力
をR,Y,B信号に分離する分離回路、303,304は電圧制御型
の可変利得部分を有する映像増幅器、305はＲ−Ｙ信号
を得るための差動増幅器、306はＢ−Ｙ信号を得るため
の差動増幅器、307はエンコーダである。308,309,310は
各赤，緑，青の光成分を検出する光検出器311,312,313
は各色成分の光検出器出力の増幅器、314,315は差動増
幅器である。2. Description of the Related Art A conventional camera device will be described with reference to FIG.
FIG. 3 shows a circuit block of a conventional camera device. Third
In the figure, 301 is an image sensor, 302 is a separation circuit for separating the output of the image sensor 301 into R, Y, and B signals, 303 and 304 are video amplifiers having a voltage-controlled variable gain portion, and 305 is an RY signal. 306 is a differential amplifier for obtaining a BY signal, and 307 is an encoder. 308, 309 and 310 are photo detectors 311, 312 and 313 for detecting red, green and blue light components, respectively.
Is a photodetector output amplifier for each color component, and 314 and 315 are differential amplifiers.
以上のように構成された従来のカメラ装置のホワイトバ
ランス調整は、撮像素子301と独立した赤，緑，青の光
成分を検出する検出器308,309,310によって広画角の被
写体（白の被写体に相当）から各色の光成分信号を得、
増幅器311,312,313で増幅した後、差動増幅314,315によ
って「赤−緑」「青−緑」の光成分信号を得る。この得
られた光成分信号を制御信号として利得可変映像増幅器
303,304の利得を変化させ、分離回路302の出力信号であ
るR,Bの映像信号のレベルを制御して差動増幅器305,306
の出力である色差信号（Ｒ−Ｙ），（Ｂ−Ｙ）を調整す
ることによってホワイトバランス調整を自動的に行なっ
ている。The white balance adjustment of the conventional camera device configured as described above is performed by the detectors 308, 309, and 310, which are independent of the image sensor 301 and detect red, green, and blue light components, and have a wide-angle object (corresponding to a white object). From each color light component signal,
After being amplified by the amplifiers 311, 312, 313, the "red-green" and "blue-green" light component signals are obtained by the differential amplifiers 314, 315. Variable gain video amplifier using the obtained light component signal as a control signal
The differential amplifiers 305 and 306 are controlled by changing the gains of the 303 and 304 and controlling the levels of the R and B video signals which are the output signals of the separation circuit 302.
The white balance adjustment is automatically performed by adjusting the color difference signals (R-Y) and (B-Y) which are the outputs of.
発明が解決しようとする問題点 しかしながら、上記のオートホワイトバランス回路によ
れば、光検出器308,309,310が黒体放射のスペクトルに
近似できうる太陽光やタングステンランプなどの下で被
写体光のR,G,B成分を検知していれば、常に適正なホワ
イトバランスが得られることになる。しかし、光源が蛍
光灯などの場合は、蛍光灯光源は黒体放射のスペクトル
とは異なる特異なスペクトルを有しているので、この種
光源の下で上記回路を有したカラービデオカメラ等を用
いる場合にはホワイトバランスの調整量にずれを生じて
良好なホワイトバランス調整が行なわれないものであっ
た。Problems to be Solved by the Invention However, according to the above-described auto white balance circuit, the photodetectors 308, 309, 310 can approximate the spectrum of black body radiation, R, G of the subject light under sunlight or a tungsten lamp, etc. If the B component is detected, an appropriate white balance will always be obtained. However, when the light source is a fluorescent lamp or the like, since the fluorescent lamp light source has a unique spectrum different from the spectrum of black body radiation, a color video camera or the like having the above circuit is used under this kind of light source. In this case, the amount of white balance adjustment is shifted, and good white balance adjustment cannot be performed.
そこで上記蛍光灯などの特殊光源にも対応できるよう
に、R,G,Bの３原色のスペクトルをセンサーによって検
出すると共に特有のスペクトルをも別のセンサーで検出
するホワイトバランス回路が特開昭57−127376号公報に
示されている。しかし、この回路ではセンサーを複数個
必要とし蛍光灯光源にも多くの種類があることから、さ
らにセンサーを多く用いたり回路構成が複雑化するなど
してコストが高価になる欠点があった。Therefore, in order to correspond to the special light source such as the above-mentioned fluorescent lamp, there is a white balance circuit in which the spectrum of the three primary colors of R, G and B is detected by a sensor and the unique spectrum is also detected by another sensor. -127376. However, since this circuit requires a plurality of sensors and there are many types of fluorescent lamp light sources, there is a drawback that the cost is increased due to the use of more sensors and the complicated circuit configuration.
また、蛍光灯光源の発する光に対して受光素子でフリッ
カーを検出することで、蛍光灯光源とそれ以外の光源と
を区別するホワイトバランス回路が特開昭59−141888号
公報に示されている。Further, Japanese Patent Laid-Open No. 59-141888 discloses a white balance circuit that distinguishes a fluorescent light source from other light sources by detecting flicker with a light receiving element for light emitted from a fluorescent light source. .
しかし実際の撮影では、黒体放射に近似できうる太陽光
やタングステンランプと、蛍光灯などの特殊光源とが混
合している場合があるので、単なるフリッカーを検出し
て蛍光灯光源の存在を検出するだけでは、撮影状態にあ
った良好なホワイトバランス調整が行なわれないという
問題点を有している。However, in actual shooting, there are cases where sunlight or a tungsten lamp that can approximate black body radiation and a special light source such as a fluorescent lamp are mixed, so simply detecting flicker to detect the presence of the fluorescent lamp light source. However, there is a problem in that the white balance adjustment that is suitable for the shooting state cannot be performed only by performing the adjustment.
本発明はかかる点に鑑み、実際の撮影状態にあったホワ
イトバランス調整を行なうことのできるホワイトバラン
ス回路を備えたカメラ装置を提供することを目的とす
る。The present invention has been made in view of the above points, and an object of the present invention is to provide a camera device provided with a white balance circuit capable of performing white balance adjustment suitable for an actual shooting state.
問題点を解決するための手段 本発明は上記問題点を解決するため、照明光の光量情報
を得る手段と、照明光に含まれる蛍光灯光源を検出する
蛍光灯情報検出手段と、この蛍光灯情報と上記光量情報
を用い照明光源に含まれる蛍光灯光源成分比を演算し照
明情報を得る第２の演算手段と、この照明情報により蛍
光灯光源成分比に対応した補正電圧を決定し、上記制御
電圧を補正する補正手段を備えたカメラ装置である。Means for Solving the Problems In order to solve the above problems, the present invention provides means for obtaining light quantity information of illumination light, fluorescent light information detection means for detecting a fluorescent light source included in the illumination light, and this fluorescent light. Second computing means for obtaining the illumination information by computing the fluorescent light source component ratio contained in the illumination light source using the information and the light quantity information, and the correction voltage corresponding to the fluorescent lamp light source component ratio is determined by this illumination information, and The camera device includes a correction unit that corrects the control voltage.
作用 本発明は前記した構成により、照明光の光量情報と、照
明光に含まれる蛍光灯光源情報を検出し、この蛍光灯情
報と上記光量情報を用い照明光源に含まれる蛍光灯成分
比を演算し、照明光を判断して、黒体放射に近似できる
光源と蛍光灯光源との混合照明状態時にもこの照明情報
により補正電圧を決定し、良好なホワイトバランス調整
を行う。Effect The present invention detects the light quantity information of the illumination light and the fluorescent lamp light source information included in the illumination light by the above-described configuration, and calculates the fluorescent lamp component ratio included in the illumination light source using the fluorescent light information and the light quantity information. Then, the illumination light is judged, and the correction voltage is determined based on this illumination information even in the mixed illumination state of the light source and the fluorescent lamp light source that can approximate the black body radiation, and the good white balance adjustment is performed.
実施例 第１図は本発明の第１の実施例におけるカメラ装置のブ
ロック図を示すものである。第１図において101は撮像
素子、102は撮像素子の出力をR,Y,Bに分離する分離回
路、103,104は電圧制御型の可変利得部分を有する映像
増幅器、105,106はそれぞれＲ−Ｙ信号,B−Ｙ信号を得
るための差動増幅器、107はエンコーダである。108は測
光用光検出器、109,110はそれぞれ広画角の被写体から
Ｒ信号,B信号を検出する光検出器、111は増幅器、112,1
13は各赤，青に対応した信号を光の強弱に無関係に増幅
するための対数増幅器、114は青色と赤色との信号レベ
ル差を検出する差動増幅器、115は差動増幅器の出力信
号に含まれる蛍光灯光源のフリッカー電気的にはリップ
ルを検出する蛍光灯検出器、116は差動増幅器の出力信
号を必要な電圧特性に変換する制御信号発生回路、117
は光量情報である増幅器111の出力信号と、蛍光灯情報
である蛍光灯検出器115の出力信号より照明光を判別す
るための比較演算回路、118は比較演算回路117の出力信
号によって制御電圧発生回路116の出力信号を補正する
補正電圧を発生する回路、119は蛍光灯検出器115の出力
信号によって補正電圧を加算又は減算する制御電圧変換
器である。Embodiment 1 FIG. 1 is a block diagram of a camera device according to a first embodiment of the present invention. In FIG. 1, 101 is an image sensor, 102 is a separation circuit for separating the output of the image sensor into R, Y and B, 103 and 104 are video amplifiers having a voltage controlled variable gain portion, 105 and 106 are RY signals and B respectively. A differential amplifier for obtaining the -Y signal, and 107 an encoder. Reference numeral 108 is a photometric photodetector, 109 and 110 are photodetectors that detect R and B signals from a subject having a wide angle of view, respectively, 111 is an amplifier, and 112 and 1
13 is a logarithmic amplifier for amplifying the signals corresponding to each red and blue regardless of the intensity of light, 114 is a differential amplifier that detects the signal level difference between blue and red, 115 is the output signal of the differential amplifier Flicker of fluorescent light source included Fluorescent lamp detector that electrically detects ripple, 116 is a control signal generation circuit that converts the output signal of the differential amplifier into a required voltage characteristic, 117
Is a comparison arithmetic circuit for discriminating the illumination light from the output signal of the amplifier 111 which is the light quantity information and the output signal of the fluorescent lamp detector 115 which is the fluorescent lamp information, 118 is a control voltage generated by the output signal of the comparison arithmetic circuit 117 A circuit for generating a correction voltage for correcting the output signal of the circuit 116, and a control voltage converter 119 for adding or subtracting the correction voltage according to the output signal of the fluorescent lamp detector 115.
以上のように構成された本実施例のカメラ装置について
以下その動作を説明する。The operation of the camera device of this embodiment configured as described above will be described below.
広画角の被写体光をＲ信号検出器109およびＢ信号検出
器110で検出して得た光電流IR，IBのＲ信号、Ｂ信号は
それぞれ対数増幅器112,113に導かれ対数値logIR,logIB
に変換される。対数増幅器の出力信号は差動増幅器114
に導かれ、logIR−logIB＝log（IR／IB）の信号を出力
する。この出力信号log（IR／IB）は入射光量に無関係
な色温度情報を示す信号となっているので、制御電圧発
生器116によってホワイトバランス調整に必要な「色温
度−電圧」特性を持つ制御電圧VR1，VB1に変換される。
また上記の差動増幅器114の出力信号は蛍光灯検出回路1
15に入力され、照明光に含まれる蛍光灯成分を検出す
る。そしてこの照明光中の蛍光灯成分である蛍光灯情報
と測光用検出器からの光量情報を用いて、比較演算回路
117が蛍光灯情報と光量情報の比より照明状態を判断し
て補正電圧発生器118を制御し、照明状態にあった補正
電圧値ΔR,ΔＢを発生する。そして制御電圧変換器119
は蛍光灯検出器115によって制御され、蛍光灯検出器が
照明光は蛍光灯以外の光源だと判断した時は、前述の制
御電圧VR1，VB1を、そのまま出力し、蛍光灯等の特殊光
源だと判断した時は制御電圧VR1，VB1に照明状態にあっ
た補正電圧ΔR,ΔＢを加算又は減算して補正後出力す
る。この出力電圧VR，VBによって可変利得型映像増幅器
103,104を制御してホワイトバランスのあった信号を得
ることができる。The R and B signals of the photocurrents I R and I B obtained by detecting the object light with a wide angle of view by the R signal detector 109 and the B signal detector 110 are guided to logarithmic amplifiers 112 and 113, respectively, and logarithmic value logI R , logI B
Is converted to. The output signal of the logarithmic amplifier is the differential amplifier 114.
, And outputs a signal of logI R −logI B = log (I R / I B ). This output signal log (I R / I B) has a signal indicating the extraneous color temperature information to the amount of incident light, necessary for the white balance adjusted by the control voltage generator 116 - with "color temperature voltage" characteristic Converted to control voltages V R1 and V B1 .
The output signal of the differential amplifier 114 is the fluorescent lamp detection circuit 1
It is input to 15 and detects the fluorescent lamp component contained in the illumination light. Then, by using the fluorescent light information which is the fluorescent light component in the illumination light and the light amount information from the photometric detector, a comparison operation circuit
117 determines the illumination state based on the ratio of the fluorescent lamp information and the light amount information and controls the correction voltage generator 118 to generate the correction voltage values ΔR and ΔB that are in the illumination state. And the control voltage converter 119
Is controlled by the fluorescent lamp detector 115, and when the fluorescent lamp detector determines that the illumination light is a light source other than the fluorescent lamp, the control voltages V R1 and V B1 described above are output as they are, and a special lamp such as a fluorescent lamp is used. When it is determined that the light source is used, the control voltages V R1 and V B1 are added or subtracted with the correction voltages ΔR and ΔB that are in the illumination state, and the corrected voltages are output. This output voltage V R , V B controls the variable gain type video amplifier.
A signal with white balance can be obtained by controlling 103 and 104.
以上のように構成された本実施例のカメラ装置では、蛍
光灯検出回路が照明光は蛍光灯等の特殊光源だと判断し
た時は、蛍光灯情報と光量情報から得た照明情報によっ
て決定される補正電圧で補正するので、照明光にあった
制御電圧を得ることができ、良好なホワイトバランス調
整を行なうことができる。In the camera device of the present embodiment configured as described above, when the fluorescent light detection circuit determines that the illumination light is a special light source such as a fluorescent light, it is determined by the illumination information obtained from the fluorescent light information and the light amount information. Since it is corrected by the correction voltage, the control voltage suitable for the illumination light can be obtained, and the white balance can be adjusted well.
次に第２図は本発明の第２の実施例を示すカメラ装置の
ブロック図である。同図において第１の実施例と異な
る、制御電圧を得る部分を示している。201は色温度情
報より必要な電圧特性の制御電圧を発生する制御信号発
生回路、202は光量情報と蛍光灯情報より照明光を判別
するための比較演算回路、203は制御電圧発生回路201の
出力信号を補正する第１の補正電圧を発生する回路、20
4は比較演算回路202の出力信号によって制御電圧発生回
路201の出力信号を補正する第２の補正電圧を発生する
回路、205は蛍光灯情報により補正電圧発生器１の出力
信号に補正電圧発生器２の出力信号を加減算する回路、
206は蛍光灯情報により加減算回路205の出力信号を加算
又は減算する制御電圧変換器。Next, FIG. 2 is a block diagram of a camera device showing a second embodiment of the present invention. In the figure, a portion for obtaining a control voltage, which is different from the first embodiment, is shown. 201 is a control signal generation circuit that generates a control voltage having a required voltage characteristic from color temperature information, 202 is a comparison operation circuit for determining illumination light based on light amount information and fluorescent lamp information, and 203 is an output of the control voltage generation circuit 201. A circuit for generating a first correction voltage for correcting the signal, 20
4 is a circuit for generating a second correction voltage for correcting the output signal of the control voltage generation circuit 201 according to the output signal of the comparison calculation circuit 202, and 205 is a correction voltage generator for the output signal of the correction voltage generator 1 according to the fluorescent lamp information. A circuit for adding and subtracting the output signals of 2;
206 is a control voltage converter for adding or subtracting the output signal of the adder / subtractor circuit 205 according to the fluorescent lamp information.
以上のように構成された第２の実施例のカメラ装置につ
いて、以下その動作を説明する。補正電圧発生器１の出
力信号ΔR1，ΔB1は照明光が蛍光灯等の特殊光源の時
に、制御信号発生回路の出力信号VR1，VB1を補正するた
めの信号である。そして補正電圧発生器２の出力信号Δ
R2，ΔB2は照明光が黒体放射と見なせる光源と蛍光灯の
特殊光源の混合である時に、比較演算回路が光量情報と
蛍光灯情報の比より照明情報を得、この照明情報によっ
て第１の補正電圧ΔR1，ΔB1をさらに補正する信号であ
る。The operation of the camera device of the second embodiment configured as described above will be described below. The output signals ΔR 1 and ΔB 1 of the correction voltage generator 1 are signals for correcting the output signals V R1 and V B1 of the control signal generation circuit when the illumination light is a special light source such as a fluorescent lamp. The output signal Δ of the correction voltage generator 2
When the illumination light is a mixture of a light source that can be regarded as black body radiation and a special light source of a fluorescent lamp, R 2 and ΔB 2 are obtained by the comparison calculation circuit from the ratio of the light quantity information and the fluorescent lamp information, and This is a signal for further correcting the correction voltages ΔR 1 and ΔB 1 of 1 .
このように照明が蛍光灯以外の時は、色温度情報より得
られる制御信号VR1，VB1が制御電圧変換器より出力さ
れ、照明が蛍光灯等の特殊光源の時は、照明情報により
加減算回路を制御して第１の補正電圧ΔR1，ΔB1が補正
信号ΔR,ΔＢとして加減算回路より出力され制御電圧変
換器でVR1，VB1が補正され出力される。又、照明が蛍光
灯等の特殊光源と太陽等の光源との混合である時は、光
量情報と蛍光灯情報を演算して両者光源の混合比率を検
出し、この照明情報によって制御される第２の補正電圧
ΔR2，ΔB2を用いて加減算回路で第１の補正電圧ΔR1，
ΔB1をさらに補正し、照明状態にあった補正信号ΔR,Δ
Ｂが得られる、この補正信号を用いて制御電圧変換器で
VR1，VB1を補正して出力される。こうして、すべての照
明状態にあった制御電圧VR，VBを得ることができ、ホワ
イトバランスの合った信号を得ることができる。As described above, when the illumination is not a fluorescent lamp, the control signals V R1 and V B1 obtained from the color temperature information are output from the control voltage converter, and when the illumination is a special light source such as a fluorescent lamp, addition / subtraction is performed according to the illumination information. By controlling the circuit, the first correction voltages ΔR 1 and ΔB 1 are output as correction signals ΔR and ΔB from the adder / subtractor circuit, and V R1 and V B1 are corrected and output from the control voltage converter. Also, when the illumination is a mixture of a special light source such as a fluorescent lamp and a light source such as the sun, the light amount information and the fluorescent lamp information are calculated to detect the mixture ratio of the two light sources, and the lighting information controls The second correction voltage ΔR 2 , ΔB 2 is used to add and subtract the first correction voltage ΔR 1 ,
Further correcting the .DELTA.B 1, correction signal ΔR was in lighting conditions, delta
B is obtained, using this correction signal in the control voltage converter
V R1 and V B1 are corrected and output. In this way, it is possible to obtain the control voltages V R and V B that are suitable for all lighting conditions, and obtain signals with white balance.
以上のように第２の実施例によれば、蛍光灯等の特殊光
源のための補正電圧を、さらに照明情報で制御される第
２の補正電圧で補正し、照明状態にあった補正信号を得
るので、より確実なホワイトバランス調整を行なうこと
ができる。As described above, according to the second embodiment, the correction voltage for the special light source such as the fluorescent lamp is further corrected by the second correction voltage controlled by the illumination information, and the correction signal suitable for the illumination state is obtained. As a result, more reliable white balance adjustment can be performed.
さらに、ここで第１の実施例での補正電圧発生器及び第
２の実施例での補正電圧発生器２において照明情報を用
いて必要な補正電圧を得る構成は、上記補正電圧発生器
が照明情報に対して補正電圧が連続的に変化する「照明
情報−補正電圧」特性を有しており比較演算回路の出力
信号によって必要な補正電圧を得る構成、又は補正電圧
発生器が離散的な補正電圧を発生する機能を有してお
り、比較演算回路の出力信号によって、その離散的な補
正信号を選択する構成等が考えられる。Further, here, the configuration in which the correction voltage generator in the first embodiment and the correction voltage generator 2 in the second embodiment obtain the necessary correction voltage by using the illumination information is The configuration has the "illumination information-correction voltage" characteristic in which the correction voltage continuously changes with respect to information, and the necessary correction voltage is obtained by the output signal of the comparison operation circuit, or the correction voltage generator makes discrete corrections. A configuration having a function of generating a voltage and selecting the discrete correction signal according to the output signal of the comparison operation circuit can be considered.
また第１の実施例では、R,Y,B信号を用いてホワイトバ
ランス調整を行なう場合を示したがこれに限らないし、
エンコーダでNTSC信号を得る構成を示したが色差信号を
用いる他のカメラ装置でもよいことも言うまでもない。In the first embodiment, the case where the white balance adjustment is performed using the R, Y, B signals is shown, but the present invention is not limited to this.
Although the configuration has been shown in which the encoder obtains the NTSC signal, it goes without saying that another camera device using a color difference signal may be used.
発明の効果 以上発明したように、本発明によれば、黒体放射に近似
できる光源と蛍光灯光源との混合照明状態下でも両者光
源の混合比率を検出することにより、照明状態にあった
補正信号を得ることができるので、蛍光灯と太陽光の混
合した場合でも、その混合比に対応した良好なホワイト
バランス調整を行うことができ、その実用的効果は大き
い。EFFECTS OF THE INVENTION As described above, according to the present invention, even in a mixed illumination state of a light source and a fluorescent lamp light source that can approximate black body radiation, the correction ratio in the illumination state is detected by detecting the mixture ratio of the two light sources. Since a signal can be obtained, even if a fluorescent lamp and sunlight are mixed, good white balance adjustment corresponding to the mixing ratio can be performed, and the practical effect is great.
第１図は本発明における第１の実施例のカメラ装置のブ
ロック図、第２図は第２の実施例のカメラ装置のブロッ
ク図、第３図は従来のカメラ装置のブロック図である。 101……撮像素子、102……分離回路、103,104……可変
利得型映像増幅器、105,106……差動増幅器、107……エ
ンコーダ、108……測光用検出器、109……Ｒ信号光検出
器、110……Ｂ信号光検出器、111……増幅器、112,113
……対数増幅器、114……差動増幅器、115……蛍光灯検
出器、116……制御信号発生回路、117……比較演算回
路、118……補正電圧発生器、119……制御電圧変換器、
203……補正電圧発生器１、204……補正電圧発生器２、
205……加減算回路。FIG. 1 is a block diagram of a camera device according to a first embodiment of the present invention, FIG. 2 is a block diagram of a camera device according to a second embodiment, and FIG. 3 is a block diagram of a conventional camera device. 101 ... Image sensor, 102 ... Separation circuit, 103, 104 ... Variable gain type video amplifier, 105, 106 ... Differential amplifier, 107 ... Encoder, 108 ... Photometric detector, 109 ... R signal photodetector, 110 ... B signal photodetector, 111 ... amplifier, 112,113
...... Logarithmic amplifier, 114 ...... Differential amplifier, 115 …… Fluorescent lamp detector, 116 …… Control signal generation circuit, 117 …… Comparison circuit, 118 …… Correction voltage generator, 119 …… Control voltage converter ,
203 ... correction voltage generator 1, 204 ... correction voltage generator 2,
205 ... Addition / subtraction circuit.
Claims (4)
得る第１の演算手段と、この第１の演算手段からの色温
度情報により前記カラー撮像素子の出力のホワイトバラ
ンス調整を行うための制御電圧を発生する制御電圧発生
手段と、照明光の光量情報を得る手段と、照明光に含ま
れる蛍光灯光源を検出する蛍光灯情報検出手段と、この
蛍光灯情報と上記光量情報を用い照明光源に含まれる蛍
光灯光源成分比を演算し照明情報を得る第２の演算手段
と、この照明情報により蛍光灯光源成分比に対応した補
正電圧を決定し、上記制御電圧を補正する補正手段を備
えたカメラ装置。1. A color image pickup device, a first calculation means for obtaining color temperature information of illumination light, and white balance adjustment of an output of the color image pickup device based on the color temperature information from the first calculation means. Control voltage generating means for generating the control voltage, means for obtaining the light quantity information of the illumination light, fluorescent light information detecting means for detecting the fluorescent light source included in the illumination light, using the fluorescent light information and the light quantity information Second computing means for computing the fluorescent light source component ratio included in the illumination light source to obtain illumination information, and correction means for determining a correction voltage corresponding to the fluorescent lamp light source component ratio based on this illumination information and correcting the control voltage. Camera device equipped with.
発生手段の出力信号に加算または減算する直流成分を制
御する構成とした特許請求の範囲第１項記載のカメラ装
置。2. The camera device according to claim 1, wherein the correction means for correcting the control voltage is configured to control a DC component to be added to or subtracted from the output signal of the control voltage generation means.
は、照明情報に対して連続的に変化する補正電圧のなか
から必要な補正電圧値を得る構成とした特許請求の範囲
第１項、又は第２項記載のカメラ装置。3. The method according to claim 1, wherein the means for determining the correction voltage based on the illumination information is configured to obtain a necessary correction voltage value from the correction voltages that continuously change with respect to the illumination information. The camera device according to item 2.
は、照明情報を用いて離散的な補正電圧のなかから選択
する構成とした特許請求の範囲第１項、又は第２項記載
のカメラ装置。4. The camera device according to claim 1 or 2, wherein the means for determining the correction voltage based on the illumination information is configured to select from the discrete correction voltages using the illumination information. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60056711A JPH0693782B2 (en) | 1985-03-20 | 1985-03-20 | Camera device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60056711A JPH0693782B2 (en) | 1985-03-20 | 1985-03-20 | Camera device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61214890A JPS61214890A (en) | 1986-09-24 |
| JPH0693782B2 true JPH0693782B2 (en) | 1994-11-16 |
Family
ID=13035061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60056711A Expired - Lifetime JPH0693782B2 (en) | 1985-03-20 | 1985-03-20 | Camera device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0693782B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62159592A (en) * | 1986-01-07 | 1987-07-15 | Victor Co Of Japan Ltd | Automatic white color adjuster for television camera |
| JPH02272892A (en) * | 1989-04-14 | 1990-11-07 | Hitachi Ltd | White balance controller |
| US10567723B2 (en) | 2017-08-11 | 2020-02-18 | Samsung Electronics Co., Ltd. | System and method for detecting light sources in a multi-illuminated environment using a composite RGB-IR sensor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57127376A (en) * | 1981-01-30 | 1982-08-07 | Nippon Kogaku Kk <Nikon> | White balance circuit |
| JPS59141888A (en) * | 1983-02-02 | 1984-08-14 | Olympus Optical Co Ltd | Automatic white balancing circuit |
-
1985
- 1985-03-20 JP JP60056711A patent/JPH0693782B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61214890A (en) | 1986-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |