JPH0775409B2 - High sensitivity color camera device - Google Patents
High sensitivity color camera deviceInfo
- Publication number
- JPH0775409B2 JPH0775409B2 JP5063918A JP6391893A JPH0775409B2 JP H0775409 B2 JPH0775409 B2 JP H0775409B2 JP 5063918 A JP5063918 A JP 5063918A JP 6391893 A JP6391893 A JP 6391893A JP H0775409 B2 JPH0775409 B2 JP H0775409B2
- Authority
- JP
- Japan
- Prior art keywords
- solid
- image pickup
- addition control
- control signal
- state image
- 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 - Fee Related
Links
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は高感度カラーカメラ装置
に関し、特に夜間における高解像度化を実現するための
回路方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-sensitivity color camera device, and more particularly to a circuit system for realizing high resolution at night.
【０００２】[0002]
【従来の技術】一般に高感度カラーカメラ装置として固
体撮像素子（例えば、ＣＣＤ）を用いたカメラ装置が知
られている。そして、このような高感度カラーカメラ装
置には昼夜兼用のものがある。2. Description of the Related Art Generally, a camera device using a solid-state image pickup device (for example, CCD) is known as a high-sensitivity color camera device. Some of such high-sensitivity color camera devices are used for both day and night.
【０００３】ここで図５を参照して従来の高感度カラー
カメラ装置について概説する。A conventional high-sensitivity color camera device will be briefly described with reference to FIG.
【０００４】図示の高感度カラーカメラは青（Ｂ）固体
撮像素子１、緑（Ｇ）固体撮像素子２、及び赤（Ｒ）固
体撮像素子３を備えている。これらＢ固体撮像素子１、
Ｇ固体撮像素子２、及びＲ固体撮像素子３はそれぞれサ
ンプルホールド回路９に接続されるとともに駆動信号切
替器４に接続されている。The illustrated high-sensitivity color camera includes a blue (B) solid-state image sensor 1, a green (G) solid-state image sensor 2, and a red (R) solid-state image sensor 3. These B solid-state image sensor 1,
The G solid-state image pickup element 2 and the R solid-state image pickup element 3 are connected to the sample hold circuit 9 and the drive signal switch 4, respectively.
【０００５】各サンプルホールド回路９はプロセス回路
１１に接続され、プロセス回路１１はエンコーダ回路１
２に接続されている。そして、エンコーダ回路１２から
複合カラー信号出力が得られる。駆動信号切替回路４は
画素加算制御回路８を選択的にＢ固体撮像素子１、Ｇ固
体撮像素子２、及びＲ固体撮像素子３に接続するために
用いられる。Each sample and hold circuit 9 is connected to a process circuit 11, and the process circuit 11 is an encoder circuit 1.
Connected to 2. Then, the composite color signal output is obtained from the encoder circuit 12. The drive signal switching circuit 4 is used to selectively connect the pixel addition control circuit 8 to the B solid-state imaging device 1, the G solid-state imaging device 2, and the R solid-state imaging device 3.
【０００６】さらに、高感度カラーカメラ装置は同期信
号発生回路１０を備えており、同期信号発生回路１０か
らサンプルホールド回路９、プロセス回路１１、及びエ
ンコーダ回路１２に対して同期信号（駆動信号）が与え
られる。また、同期信号発生回路１０は駆動信号切替器
６に接続され、駆動信号切替器６によって選択的にＧ固
体撮像素子２、及びＲ固体撮像素子３に接続される。Further, the high-sensitivity color camera device is provided with a synchronizing signal generating circuit 10, and the synchronizing signal (driving signal) is sent from the synchronizing signal generating circuit 10 to the sample hold circuit 9, the process circuit 11 and the encoder circuit 12. Given. Further, the synchronization signal generation circuit 10 is connected to the drive signal switch 6, and the drive signal switch 6 selectively connects the G solid-state image pickup device 2 and the R solid-state image pickup device 3.
【０００７】図示の高感度カラーカメラ装置では高感度
機能の切替は駆動信号切替器４及び６によって行われ
る。通常の駆動、つまり、昼間の状態では駆動信号は画
素加算制御回路８を介することなくＢ固体撮像素子１、
Ｇ固体撮像素子２、及びＲ固体撮像素子３に送られる。
一方、夜間においては、駆動信号は画素加算制御回路８
に送られ、画素加算制御回路８から加算制御信号がＢ固
体撮像素子１、Ｇ固体撮像素子２、及びＲ固体撮像素子
３に送られる。この結果、Ｂ固体撮像素子１、Ｇ固体撮
像素子２、及びＲ固体撮像素子３の出力部分における接
合部の電荷をリセットしない等の手法によって水平方向
の複数の画素加算が実行される。これによって、各画素
の電荷が微弱であっても複数の画素が加算された値がＢ
固体撮像素子１、Ｇ固体撮像素子２、及びＲ固体撮像素
子３から得られ、高感度機能を実現することができる。In the illustrated high-sensitivity color camera device, switching of the high-sensitivity function is performed by the drive signal switches 4 and 6. In the normal drive, that is, in the daytime, the drive signal is transmitted through the B solid-state image sensor 1 without passing through the pixel addition control circuit 8.
It is sent to the G solid-state image sensor 2 and the R solid-state image sensor 3.
On the other hand, at night, the drive signal is the pixel addition control circuit 8
And the addition control signal is sent from the pixel addition control circuit 8 to the B solid-state image pickup device 1, the G solid-state image pickup device 2, and the R solid-state image pickup device 3. As a result, a plurality of pixels are added in the horizontal direction by a technique such as not resetting the charges at the junctions in the output portions of the B solid-state image sensor 1, the G solid-state image sensor 2, and the R solid-state image sensor 3. As a result, the value obtained by adding a plurality of pixels is B even if the charge of each pixel is weak.
It is obtained from the solid-state image pickup device 1, the G solid-state image pickup device 2, and the R solid-state image pickup device 3, and a high sensitivity function can be realized.
【０００８】[0008]
【発明が解決しようとする課題】上述のように、従来の
高感度カラーカメラ装置では、高感度機能状態の際、水
平方向の複数の画素を加算しているから、水平解像度に
寄与する等化的な水平画素数が通常駆動の場合に比べて
１／２となってしまう。つまり、夜間における水平解像
度は昼間の水平解像度に比べて約１／２となってしま
い、水平解像度が劣化するという問題点がある。As described above, in the conventional high-sensitivity color camera device, since a plurality of pixels in the horizontal direction are added in the high-sensitivity function state, equalization contributing to the horizontal resolution is achieved. The number of horizontal pixels is halved compared to the case of normal driving. That is, the horizontal resolution at night becomes about half of the horizontal resolution at daytime, and there is a problem that the horizontal resolution deteriorates.
【０００９】本発明の目的は夜間における水平解像度が
劣化することのない高感度カラーカメラ装置を提供する
ことにある。An object of the present invention is to provide a high-sensitivity color camera device which does not deteriorate the horizontal resolution at night.
【００１０】[0010]
【課題を解決するための手段】本発明によれば、複数の
撮像素子を備え、該撮像素子の各々は加算制御信号に応
じて水平方向の複数の画素を加算して出力し、前記撮像
素子の出力に応じて複合カラー信号出力を得るするよう
にしたカラーカメラ装置において、所定の位相を有する
第１の加算制御信号を生成する加算制御手段と、該第１
の加算制御信号を受け該第１の加算制御信号との間に位
相差を有する第２の加算制御信号を生成する位相制御手
段とを有し、前記撮像素子の少なくとも一つに前記第２
の加算制御信号を前記加算信号として与え前記撮像素子
の残りに前記第１の加算制御信号を前記加算制御信号と
して与えるようにしたことを特徴とする高感度カラーカ
メラ装置が得られる。According to the present invention, a plurality of image pickup devices are provided, and each of the image pickup devices adds and outputs a plurality of pixels in the horizontal direction according to an addition control signal. In a color camera device adapted to obtain a composite color signal output in accordance with the output of the first addition control means for generating a first addition control signal having a predetermined phase;
And a phase control means for generating a second addition control signal having a phase difference from the first addition control signal, the second addition control signal being generated in at least one of the image pickup devices.
A high-sensitivity color camera device is obtained in which the addition control signal of 1) is given as the addition signal and the first addition control signal is given to the rest of the image sensor as the addition control signal.
【００１１】[0011]
【実施例】以下本発明について実施例によって説明す
る。EXAMPLES The present invention will be described below with reference to examples.
【００１２】図１を参照して、ここでは、図５に示す高
感度カラーカメラ装置と同一の構成要素については同一
の参照番号を付し説明を省略する。図示の高感度カラー
カメラ装置はさらに駆動信号切替器５及び位相制御回路
７を備えている。この高感度カラーカメラ装置では駆動
信号切替器４乃至６は連動して一斉に切り替えられる。
つまり、昼間における通常駆動状態と夜間における水平
画素加算駆動状態とを切り替えるため一斉に切り替えら
れる。Referring to FIG. 1, the same components as those of the high-sensitivity color camera device shown in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. The illustrated high-sensitivity color camera device further includes a drive signal switch 5 and a phase control circuit 7. In this high-sensitivity color camera device, the drive signal switching devices 4 to 6 are interlocked and switched at the same time.
That is, the normal drive state in the daytime and the horizontal pixel addition drive state in the nighttime are switched all at once.
【００１３】夜間においては、Ｂ固体撮像素子１及びＲ
固体撮像素子３には画素加算制御回路８からの画素加算
制御信号（第１の加算制御信号）が送られるが、Ｇ固体
撮像素子２には位相制御回路７によって位相制御された
画素加算信号が送られる。つまり、Ｇ固体撮像素子２に
は位相制御回路７から第１の加算制御信号との間に位相
差を有する第２の加算制御信号が送られる。At night, B solid-state image pickup device 1 and R
The pixel addition control signal (first addition control signal) from the pixel addition control circuit 8 is sent to the solid-state image sensor 3, but the G solid-state image sensor 2 receives the pixel addition signal whose phase is controlled by the phase control circuit 7. Sent. That is, the G solid-state imaging device 2 is sent from the phase control circuit 7 with the second addition control signal having a phase difference from the first addition control signal.
【００１４】昼間においては、図２に示すように、通常
駆動が行われる。つまり、水平画素加算を行わない駆動
状態となる。この状態では、水平方向の画素ずらしは行
われていない。In the daytime, as shown in FIG. 2, normal driving is performed. In other words, the driving state is one in which horizontal pixel addition is not performed. In this state, horizontal pixel shift is not performed.
【００１５】Ｂ固体撮像素子１、Ｇ画素撮像素子２、及
びＲ固体撮像素子３ともに水平画素加算を行った場合に
は（この例では水平方向に２画素加算を行った場合につ
いて説明する）、図３に示すように、水平方向に２画素
の加算を行っているため、感度は約２倍となるが、等価
的な水平画素数は１／２となって、その結果、水平解像
度は約１／２となってしまう。When the horizontal solid-state image pickup device 1, the G-pixel solid-state image pickup device 2, and the R solid-state image pickup device 3 are subjected to horizontal pixel addition (in this example, the case where two pixels are added in the horizontal direction will be described). As shown in FIG. 3, since two pixels are added in the horizontal direction, the sensitivity is approximately doubled, but the equivalent number of horizontal pixels is halved, and as a result, the horizontal resolution is approximately It will be halved.
【００１６】一方、本発明による高感度カラーカメラ装
置では、前述のように、Ｂ固体撮像素子１及びＲ固体撮
像素子３に画素加算制御回路８からの画素加算制御信号
を送り、Ｇ画素撮像素子２に位相制御回路７によって位
相制御された画素加算制御信号を送っているから、つま
り、Ｂ固体撮像素子１及びＲ固体撮像素子３に送られる
画素加算制御信号とＧ画素撮像素子２に送られる画素加
算制御信号との間に位相差があるから、この結果、図４
に示すように、加算した画素がそれぞれ１画素づつ交互
に空間的に配置されることになる。このため、エンコー
ダ回路１２で合成された複合カラー信号における輝度信
号成分の水平解像度は図３に示す状態に比べて著しく改
善されることになる。従って、夜間における解像度の低
下を低減することができる。On the other hand, in the high-sensitivity color camera device according to the present invention, as described above, the pixel addition control signal from the pixel addition control circuit 8 is sent to the B solid-state image pickup element 1 and the R solid-state image pickup element 3, and the G pixel image pickup element is sent. Since the pixel addition control signal whose phase is controlled by the phase control circuit 7 is sent to 2, the pixel addition control signal sent to the B solid-state image sensor 1 and the R solid-state image sensor 3 and the G pixel image sensor 2 are sent. Since there is a phase difference with the pixel addition control signal, this results in FIG.
As shown in, the added pixels are spatially arranged alternately one pixel at a time. Therefore, the horizontal resolution of the luminance signal component in the composite color signal combined by the encoder circuit 12 is significantly improved as compared with the state shown in FIG. Therefore, it is possible to reduce the decrease in resolution at night.
【００１７】なお、Ｂ固体撮像素子１、Ｇ画素撮像素子
２、及びＲ固体撮像素子３の出力はそれぞれサンプルホ
ールド回路９で映像信号に変換され、プロセス回路１１
及びエンコーダ回路１２を経て複合カラー映像信号１３
に変換される。The outputs of the B solid-state image pickup device 1, the G pixel image pickup device 2, and the R solid-state image pickup device 3 are converted into video signals by the sample hold circuit 9, and the process circuit 11
And the composite color video signal 13 via the encoder circuit 12.
Is converted to.
【００１８】[0018]
【発明の効果】以上説明したように、本発明では複数の
固体撮像素子で水平方向の複数画素を加算する際、位相
差を持たせ、固体撮像素子間における加算画素を空間的
に異なるように配置したから、夜間における水平解像度
の低下を防止できるという効果がある。As described above, in the present invention, when a plurality of pixels in the horizontal direction are added by a plurality of solid-state image pickup devices, a phase difference is provided so that the added pixels are spatially different. Since it is arranged, there is an effect that it is possible to prevent a decrease in horizontal resolution at night.
【図１】本発明による高感度カラーカメラ装置の一実施
例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of a high sensitivity color camera device according to the present invention.
【図２】水平方向の複数画素を加算しない場合の状態を
説明するための図である。FIG. 2 is a diagram for explaining a state in which a plurality of pixels in the horizontal direction are not added.
【図３】水平方向の複数画素を加算した場合の状態を説
明するための図である。FIG. 3 is a diagram for explaining a state when a plurality of pixels in the horizontal direction are added.
【図４】水平方向の複数画素を位相をずらして加算した
場合の状態を説明するための図である。FIG. 4 is a diagram for explaining a state in which a plurality of pixels in the horizontal direction are shifted in phase and added.
【図５】従来の高感度カラーカメラ装置を示すブロック
図である。FIG. 5 is a block diagram showing a conventional high sensitivity color camera device.
１ 青（Ｂ）固体撮像素子 ２ 緑（Ｇ）固体撮像素子 ３ 赤（Ｒ）固体撮像素子 ４，５，６ 駆動信号切替器 ７ 位相制御回路 ８ 画素加算制御回路 ９ サンプルホールド回路 １０ 同期信号発生回路 １１ プロセス回路 １２ エンコーダ回路 1 Blue (B) solid-state image sensor 2 Green (G) solid-state image sensor 3 Red (R) solid-state image sensor 4, 5, 6 Drive signal switch 7 Phase control circuit 8 Pixel addition control circuit 9 Sample hold circuit 10 Synchronous signal generation Circuit 11 Process circuit 12 Encoder circuit
Claims (1)
々は加算制御信号に応じて水平方向の複数の画素を加算
して出力し、前記撮像素子の出力に応じて複合カラー信
号出力を得るするようにしたカラーカメラ装置におい
て、所定の位相を有する第１の加算制御信号を生成する
加算制御手段と、該第１の加算制御信号を受け該第１の
加算制御信号との間に位相差を有する第２の加算制御信
号を生成する位相制御手段とを有し、前記撮像素子の少
なくとも一つに前記第２の加算制御信号を前記加算信号
として与え前記撮像素子の残りに前記第１の加算制御信
号を前記加算制御信号として与えるようにしたことを特
徴とする高感度カラーカメラ装置。1. A plurality of image pickup devices, each of which adds a plurality of horizontal pixels according to an addition control signal and outputs the result, and outputs a composite color signal output according to the output of the image pickup device. In the color camera device thus obtained, a position between the addition control means for generating a first addition control signal having a predetermined phase and the first addition control signal is received. Phase control means for generating a second addition control signal having a phase difference, and the second addition control signal is given to at least one of the image pickup devices as the addition signal to the first image pickup device to the rest of the image pickup device. The high-sensitivity color camera device is characterized in that the addition control signal of is added as the addition control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5063918A JPH0775409B2 (en) | 1993-03-23 | 1993-03-23 | High sensitivity color camera device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5063918A JPH0775409B2 (en) | 1993-03-23 | 1993-03-23 | High sensitivity color camera device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06276449A JPH06276449A (en) | 1994-09-30 |
| JPH0775409B2 true JPH0775409B2 (en) | 1995-08-09 |
Family
ID=13243207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5063918A Expired - Fee Related JPH0775409B2 (en) | 1993-03-23 | 1993-03-23 | High sensitivity color camera device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0775409B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08307774A (en) * | 1995-05-12 | 1996-11-22 | Nec Corp | Color camera |
| JP2006270298A (en) * | 2005-03-23 | 2006-10-05 | Matsushita Electric Ind Co Ltd | Solid state imaging device |
| JP5089642B2 (en) * | 2009-04-21 | 2012-12-05 | 三菱電機株式会社 | Three-plate imaging device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658711U (en) * | 1979-10-08 | 1981-05-20 | ||
| JPS6047713U (en) * | 1983-09-05 | 1985-04-04 | 株式会社 大日搬送機具製作所 | A conveyor with a movable wall inside the gutter that allows the distance between the conveyor blade and the blade to be adjusted. |
| JPH03130215U (en) * | 1990-04-13 | 1991-12-27 |
-
1993
- 1993-03-23 JP JP5063918A patent/JPH0775409B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06276449A (en) | 1994-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9544517B2 (en) | Electric camera | |
| JP3392886B2 (en) | Still video camera | |
| JP3704238B2 (en) | Imaging device | |
| JP2007235591A (en) | Method for controlling camera apparatus and camera apparatus using the same | |
| EP0558338A2 (en) | Video camera | |
| JPS6129197B2 (en) | ||
| EP0441345B1 (en) | High-definition still picture camera | |
| JPH0775409B2 (en) | High sensitivity color camera device | |
| JPH05236482A (en) | Television camera | |
| JPS6351437B2 (en) | ||
| JPH06269010A (en) | Color separation optical system, image pickup method and image pickup device | |
| JP2797752B2 (en) | Color solid-state imaging device | |
| JP2693845B2 (en) | Color imaging device | |
| JP2655436B2 (en) | Color solid-state imaging device | |
| JP3463695B2 (en) | Imaging equipment | |
| JPS6120192B2 (en) | ||
| JP4240686B2 (en) | Imaging device | |
| JP2000032476A (en) | Image-pickup device | |
| JPS5839172A (en) | Image pickup system | |
| JPS6127955B2 (en) | ||
| JPS62104290A (en) | Image pickup device | |
| JPS60125090A (en) | Color solid-state image pickup device | |
| JPH06233316A (en) | Image pickup device with frame still picture generating function | |
| JPS6243398B2 (en) | ||
| JPH0969977A (en) | Video signal processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960130 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070809 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080809 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080809 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090809 Year of fee payment: 14 |
|
| LAPS | Cancellation because of no payment of annual fees |