JPS5856570A - Color reader - Google Patents
Color readerInfo
- Publication number
- JPS5856570A JPS5856570A JP15397981A JP15397981A JPS5856570A JP S5856570 A JPS5856570 A JP S5856570A JP 15397981 A JP15397981 A JP 15397981A JP 15397981 A JP15397981 A JP 15397981A JP S5856570 A JPS5856570 A JP S5856570A
- Authority
- JP
- Japan
- Prior art keywords
- image sensor
- color
- original
- width
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
- H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Heads (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、小形で高速なカラー読取装置１１に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compact and high-speed color reading device 11.
第１図は従来のカラー読取装置を示すもので。Figure 1 shows a conventional color reading device.
１はカラー原稿、２は白色光源、３はレンズ、４は赤色
フィルタ、５は緑色フィルタ、６は青色フイルク、１は
光電変換素子、８はハーフミラ−である、これらの動作
は、カラー原稿１を白一色光源２で照明し、その反射光
をハーフミラ−８で３ｉ割し、その各々を赤色フィルタ
４．緑色フィルタ５、青色フィルタ６を通過させること
Ｋより、カラー原稿１上の元１ｇ号を３原色に分離する
。また、それぞれに設けられた光電変換素子７によって
。1 is a color original, 2 is a white light source, 3 is a lens, 4 is a red filter, 5 is a green filter, 6 is a blue film, 1 is a photoelectric conversion element, and 8 is a half mirror. is illuminated with a white light source 2, the reflected light is divided by 3i by a half mirror 8, and each of the reflected lights is passed through a red filter 4. By passing it through a green filter 5 and a blue filter 6, the original No. 1g on the color original 1 is separated into three primary colors. Also, by the photoelectric conversion elements 7 provided in each.
各々の色信号に従った電気信号に変換するものである。It converts each color signal into an electric signal according to the color signal.
しかしながら、かかる従来のカラー読取装置ではレンズ
３を用・いているため、装置か大きく、感度が低い欠点
かあった。However, since such a conventional color reading device uses the lens 3, the device is large and has the disadvantage of low sensitivity.
第２図は別の従来のカラー！取装置を示すもので、１は
カラー原稿、３はレンズ、Ｔは光電変換素子、口は赤色
光源、１０は緑色光源、１１は青色光源、１２は切替え
装置、１３は光源用電源である。これを動作するには、
カラー原稿１を赤色光源９．緑色光源１０．青色光源１
１を時系列に順次点灯して照明し１反射光をレンズ３を
介して光電変換素子１で、赤色、緑色、宵色の時系列の
電気信号に変換するものである。しかＬながら、かかる
従来のカラー読取装置では、光源を順次点灯する方式で
あるため、絖み取る速度は、光称の残光時間に制限され
、高速化が図りに（いという欠点があった。Figure 2 is another conventional color! 1 is a color original, 3 is a lens, T is a photoelectric conversion element, a mouth is a red light source, 10 is a green light source, 11 is a blue light source, 12 is a switching device, and 13 is a power source for the light source. To make this work,
A color original 1 is exposed to a red light source 9. Green light source10. blue light source 1
1 is sequentially turned on and illuminated in chronological order, and the reflected light of 1 is converted through a lens 3 into a time-series electric signal of red, green, and evening color by a photoelectric conversion element 1. However, in such conventional color reading devices, the light sources are turned on sequentially, so the speed of removing the welts is limited by the afterglow time of the light name, and there is a drawback that it is difficult to increase the speed. .
この発明は、これらの欠点を除去するため、色フィルタ
を備えたＩＣイメージセ／すを原稿幅と同一幅に配列し
たＩＣイメージセ／す列と、集束性光ファイバ７レイを
組合わせたことを％黴としたカラー読取装置である。以
下１図面についてこの発明の詳細な説明する。In order to eliminate these drawbacks, this invention combines an IC image cell row in which IC image cells equipped with color filters are arranged in the same width as the document width, and 7-ray focusing optical fiber. This is a color reading device that uses % mold. The present invention will be described in detail below with reference to one drawing.
第３図はこの発明の一実施例の断面図を示し、１はカラ
ー原稿、２は白色光源、１４ｍ、１４ｂは集束性光ファ
イバアレイ、１５ｍ、１５ｂはＣＯＤイメージセンサア
レイである。FIG. 3 shows a sectional view of an embodiment of the present invention, in which 1 is a color original, 2 is a white light source, 14m and 14b are convergent optical fiber arrays, and 15m and 15b are COD image sensor arrays.
第４図はＣＯＤイメージセンサ７ンイ１５ａ。Figure 4 shows the COD image sensor 7-15a.
１５ｂの平面図であって、１６はＣＣＤイメージセンサ
、１７は前記ＣＣＤイメージセンサ１６中のホトダイオ
ードアレイである。ここで、集束性光ファイバ７レイ１
４ｍ、１４ｂは、カラー原稿１０−にわたってカラー原
稿１と１対ｌの結像をするものである。また、ＣＣＤイ
メージセンサ７レイ１！ｉａ、１ｓｂは第４図に示すよ
うに、２組］列になっており、光電変換素子であるホト
ダイオード７レイ１Ｔを原稿投＃して原稿幅と平行方向
に−ｔｉ厨に切れ目、ＩＫなりがなくなるように配置さ
れている。It is a plan view of 15b, and 16 is a CCD image sensor, and 17 is a photodiode array in the CCD image sensor 16. Here, the focusing optical fiber 7 rays 1
4m and 14b form a 1:1 image of the color original 1 over the color original 10-. Also, CCD image sensor 7 ray 1! As shown in Fig. 4, the ia and 1sb are arranged in two rows, and the photodiode 7ray 1T, which is a photoelectric conversion element, is projected onto the document and a cut is made in the -ti direction in the direction parallel to the width of the document. It is arranged so that there is no
第５図はＣＣＤイメージセンサ１ｓの平面拡大図であっ
て、１Ｔはホトダイオード７レイ、１１はチャネルスト
ッパ、１９は透光層、２０は赤色フィルタ、２１は緑色
フィルタ、２２は青色フィルタである。ここで、赤色フ
ィルタ２Ｇ、緑色フィルタ２１．青色フィルタ２２は、
それぞれ交互に配置されており、ホトダイオード７レイ
ＩＴに対応している。FIG. 5 is an enlarged plan view of the CCD image sensor 1s, in which 1T is a photodiode 7 ray, 11 is a channel stopper, 19 is a transparent layer, 20 is a red filter, 21 is a green filter, and 22 is a blue filter. Here, the red filter 2G, the green filter 21. The blue filter 22 is
They are arranged alternately and correspond to the photodiode 7-ray IT.
次に、動作について説明する。Next, the operation will be explained.
第３図、第４図、第５図において、カラー原稿１を白色
光源２で照明し、反射光を集束性光ファイバ７レイ１４
ｍ、１４ｂで、それぞれＣＯＤイメージセンサアレイ１
５ｍ、１５ｂに結像し、ＣＣＤイメージセンサ１６を駆
動することにより一信号を得る。In FIGS. 3, 4, and 5, a color original 1 is illuminated with a white light source 2, and the reflected light is transmitted through a focusing optical fiber 7 ray 14.
m, 14b, respectively COD image sensor array 1
5m and 15b, and one signal is obtained by driving the CCD image sensor 16.
第６図は得られた一信号の一例を示し、２３は一信号を
、２４は色フィルタの種別を示し、ＲｌＧ、Ｂはそれぞ
れ赤色フィルタ２０．緑色フィルタ２１．を色フィルタ
２２を設けたホトダイオード７レイ１Ｔより得られた時
系列な画信号を示す。FIG. 6 shows an example of one signal obtained, 23 indicates one signal, 24 indicates the type of color filter, and RlG and B indicate the red filter 20. Green filter 21. shows a time-series image signal obtained from a photodiode 7 ray 1T provided with a color filter 22.
第７図は画信号処理回路を示し、２５．〜２５ＨはＣＣ
Ｄイメージセンサ駆動回路、２６はスイッチ、２７．２
８は遅延回路、２９は色判別回路である。FIG. 7 shows an image signal processing circuit, 25. ~25H is CC
D image sensor drive circuit, 26 is a switch, 27.2
8 is a delay circuit, and 29 is a color discrimination circuit.
これを動作するには、ＣＯＤイメージセンナ駆動回路２
５．〜２５ｍ１に順次駆動し、時系列で入力する信号を
スイッチ２６で赤色、緑色、青色のフィルタをつけて読
み取った信号を分離し、遅延回路２７．２８を用いて色
判別回路２９に同時に入力し、赤色信号、緑色信号、青
色信号に分離する。このようにＣＣＤイメージセンサ１
６のホトダイオード７レイ１Ｔの３（１を１組として、
］画素の色判別を行う。To operate this, COD image sensor drive circuit 2
5. ~25m1 are sequentially driven, and the signals inputted in time series are separated by the red, green, and blue filters using the switch 26, and simultaneously inputted to the color discrimination circuit 29 using the delay circuits 27 and 28. , separated into red, green, and blue signals. In this way, CCD image sensor 1
6 photodiodes 7 rays 1T 3 (1 set as 1 set,
] Performs pixel color discrimination.
実験に用いたカラー読取装置では、Ａ４判カラーｉ稿１
用としてホトダイオード７レイＩＴのピンチ１３μｍ、
累子数か２０４８の素子のＣＣＤイメージセンサ１６を
８個用い、４個ずつ２列にした１、１画素の大きさは、
ホトダイオード７レイＩＴの３個で構成され、３９ ｐ
ｍ （２５，６”／ｍ）である、また、集束性光フフ
イバ７レイ１４ａ。The color reading device used in the experiment scanned A4 size color i manuscript 1.
For photodiode 7 ray IT pinch 13μm,
Using 8 CCD image sensors 16 with 2048 elements, the size of each pixel is as follows:
Consists of 3 photodiodes 7-ray IT, 39p
m (25,6”/m), and a focusing optical fiber 7 ray 14a.
１４ｂの共役長が２０１１１のものを用い、カラー原′
！Ｉ４１とＣＣＤイメージセンサ１６間の距離は２０肩
菖とした。このような構成になっているため、小形で高
解像度のカラー読取装置が実現できた。また、ＣＣＤイ
メージセンサ１６を用いるため、高速読み取りが可能で
あった。The conjugate length of 14b is 20111, and the color original '
! The distance between I41 and the CCD image sensor 16 was 20 mm. With this configuration, we were able to realize a compact, high-resolution color reading device. Furthermore, since the CCD image sensor 16 was used, high-speed reading was possible.
なお、第３図、第４図、第５図で、ＩＩ！２明の都合上
、集束性光ファイバアレイ１４息、１４ｂ、ＣＣＤイメ
ージセンサアレイ？５ｍ、１５ｂはいずれも２列とした
が、これは１列または複数列であってもよいのはもちろ
んである。また、イメージセンサとしてＣＣＤイメージ
センサ１６を用いたが、ＭＯＳイメージセンサ等ＩＣイ
メージセンサでも同様の効果が得られる。さらに、光源
を白色光源２としたが、発光分布をイメージセンサの分
光感度に合わせたものでよく、ＬＥＤ、ＥＬ等を並べた
ものでもよく、げい光灯でもよいのはもちろんである。In addition, in Figures 3, 4, and 5, II! 2 For convenience, focusing optical fiber array 14, 14b, CCD image sensor array? 5m and 15b are both arranged in two rows, but it goes without saying that there may be one or more rows. Furthermore, although the CCD image sensor 16 is used as the image sensor, similar effects can be obtained with an IC image sensor such as a MOS image sensor. Furthermore, although the light source is the white light source 2, the light source may be one whose emission distribution matches the spectral sensitivity of the image sensor, and it may be an arrangement of LEDs, ELs, etc., or a fluorescent lamp may of course be used.
また、＃１４図ではホトダイオード７レイ１１の端部に
おいて、丁度接続されるような構造としたが、接続の容
易性を得るため、各ホトダイオード７レイ１１を互いに
重なるように配置して、電気的処理によって一走査線の
信号を得るようにしてもよい。In addition, in Figure #14, the photodiodes 7 and 11 are connected exactly at the ends, but in order to facilitate the connection, the photodiodes 7 and 11 are arranged so as to overlap each other to electrically connect them. The signal of one scanning line may be obtained by processing.
さらに１上記実施例では、ＣＯＤイメージセンサ１６を
千鳥状に配列し、２本の集束性光ファイバ７レイ１４ｍ
、１４ｂを用いたが、イメージセンサな１列に接続り、
１本の集束性光ファイバ７レイで構成する場合もこの発
明に含まれることはいうまでもない。Furthermore, in the above embodiment, the COD image sensors 16 are arranged in a staggered manner, and two focusing optical fibers 7 rays 14 m long are arranged in a staggered manner.
, 14b was used, but connected to one row of image sensors,
It goes without saying that the present invention also includes a configuration of one convergent optical fiber 7 ray.
以上説ｔ１４したように、この発明は、色フィルタを具
備したＩＣイメージセンサを原稿幅と同一幅に並べたＩ
Ｃイメージセンサ７レイと、集束性光ファイバ７レイを
組合わせてカラー読取装置を構成しているため、小形で
高解像度、そして高速であるとい５利点かあり、カラー
７７クシξす装置。As explained above, the present invention provides an integrated circuit in which IC image sensors equipped with color filters are arranged in the same width as the document width.
Since the color reading device is constructed by combining the C image sensor 7 rays and the focusing optical fiber 7 rays, it has the advantages of being small, high resolution, and high speed.
電算機入力装置等の光電変換系に用いることが可能であ
る。It can be used in photoelectric conversion systems such as computer input devices.
第１図、第２図は従来のカラー読取装置を示す構成図、
第３図はこの発明の一実施例を示す断面図、第４図は同
じ（ＣＣＤイメージセンサアレイを示す平面図、第５図
は同じ＜ ＣＣＤイメージセンサを示す平向拡大図、第
６図は同じく画信号出力例を示す波形図、第７図はこの
発明に用いる画信号処理回路の一例を示すブｐツク図で
ある。
図中、１はカラー原稿、２は白色光源、１４ａ。
１４ｂは集束性光ファイバ７レイ、１５ａ、Ｉｓ゛・ｎ
：１１１はＣＣＤイメージセンサアレイ、１６はＣＣＤ
Ｅζ’（、ｙｔ−９ヤシケ、１７ｔｉｙｈ）＊イオー、
ア、イ、１８はチャネルストッパ、１９は遮光層、２．
０は赤色フィルタ、２１は緑色フィルタ、２２は青色フ
ィルタ、２３は画信号、２４は色フィルタの種別、２５
１〜２５ＮはＣＯＤイメージセンサ駆動（ロ）路、・２
６はスイッチ、２７．２８は遅延回路。
−
２９は色別回路である。
第５図
胆
第６図
第７図FIGS. 1 and 2 are configuration diagrams showing a conventional color reading device,
FIG. 3 is a sectional view showing an embodiment of the present invention, FIG. 4 is a plan view showing the CCD image sensor array, FIG. 5 is the same. Similarly, FIG. 7 is a waveform diagram showing an example of the image signal output, and FIG. 7 is a book diagram showing an example of the image signal processing circuit used in the present invention. In the figure, 1 is a color original, 2 is a white light source, 14a and 14b are Focusing optical fiber 7 rays, 15a, Is゛・n: 111 is CCD image sensor array, 16 is CCD
Eζ'(,yt-9yashike,17tiyh)*Ioh,
A, B, 18 is a channel stopper, 19 is a light shielding layer, 2.
0 is a red filter, 21 is a green filter, 22 is a blue filter, 23 is an image signal, 24 is a type of color filter, 25
1 to 25N are COD image sensor drive (b) paths, ・2
6 is a switch, 27.28 is a delay circuit. -29 is a color-coded circuit. Figure 5 Figure 6 Figure 7
Claims (1)
備した１次元イメージセンサを複数個接続して読み取り
原稿幅と同−ｍＫ並べたＩＣイメージセンサ７レイと、
前記画素にカラー原稿からの情報光を導くように設置し
た集束性光ファイバ７レイと、前記各イメージセンサか
ら得られる各色信号を抽出処理する電気回路とからなる
ことを特徴とするカラー読取装置・KA alternates red, green, and blue filters corresponding to each pixel
A plurality of one-dimensional image sensors equipped with the IC image sensor 7 rays are connected and lined up to the same width as the width of the original to be read.
A color reading device comprising a convergent optical fiber 7 ray installed to guide information light from a color document to the pixel, and an electric circuit for extracting and processing each color signal obtained from each of the image sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15397981A JPS5856570A (en) | 1981-09-30 | 1981-09-30 | Color reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15397981A JPS5856570A (en) | 1981-09-30 | 1981-09-30 | Color reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5856570A true JPS5856570A (en) | 1983-04-04 |
Family
ID=15574253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15397981A Pending JPS5856570A (en) | 1981-09-30 | 1981-09-30 | Color reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5856570A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5986361A (en) * | 1982-11-09 | 1984-05-18 | Toshiba Corp | Color close-contact sensor |
| JPS6143870A (en) * | 1985-08-08 | 1986-03-03 | Toshiba Corp | Contact sensor |
| US4716456A (en) * | 1982-10-28 | 1987-12-29 | Tokya Shibaura Denki Kabushiki Kaisha | CCD Color image sensor with a light source having a spectrum distribution characteristic having peaks at 470 nm and 590 nm and having no wavelengths above 700 nm |
| US4839719A (en) * | 1987-01-30 | 1989-06-13 | Minolta Camera Kabushiki Kaisha | Color image reading apparatus with an improved sensor |
| US4862286A (en) * | 1986-11-14 | 1989-08-29 | Canon Kabushiki Kaisha | Image reading apparatus which adjusts image signals to improve signal balance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998512A (en) * | 1973-01-22 | 1974-09-18 | ||
| JPS54116821A (en) * | 1978-03-03 | 1979-09-11 | Hitachi Ltd | Photo detector |
| JPS5657358A (en) * | 1979-09-28 | 1981-05-19 | Siemens Ag | Linear scanning monolithic integrated circuit and method of driving same |
-
1981
- 1981-09-30 JP JP15397981A patent/JPS5856570A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998512A (en) * | 1973-01-22 | 1974-09-18 | ||
| JPS54116821A (en) * | 1978-03-03 | 1979-09-11 | Hitachi Ltd | Photo detector |
| JPS5657358A (en) * | 1979-09-28 | 1981-05-19 | Siemens Ag | Linear scanning monolithic integrated circuit and method of driving same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4716456A (en) * | 1982-10-28 | 1987-12-29 | Tokya Shibaura Denki Kabushiki Kaisha | CCD Color image sensor with a light source having a spectrum distribution characteristic having peaks at 470 nm and 590 nm and having no wavelengths above 700 nm |
| JPS5986361A (en) * | 1982-11-09 | 1984-05-18 | Toshiba Corp | Color close-contact sensor |
| JPS6143870A (en) * | 1985-08-08 | 1986-03-03 | Toshiba Corp | Contact sensor |
| JPH0216073B2 (en) * | 1985-08-08 | 1990-04-16 | Tokyo Shibaura Electric Co | |
| US4862286A (en) * | 1986-11-14 | 1989-08-29 | Canon Kabushiki Kaisha | Image reading apparatus which adjusts image signals to improve signal balance |
| US4839719A (en) * | 1987-01-30 | 1989-06-13 | Minolta Camera Kabushiki Kaisha | Color image reading apparatus with an improved sensor |
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| JPS61161758A (en) | Direct reading type image sensor | |
| JPS5838062A (en) | Reader | |
| JPS61136367A (en) | Image read element |