JPH0565160U - Color image reader - Google Patents
Color image readerInfo
- Publication number
- JPH0565160U JPH0565160U JP421992U JP421992U JPH0565160U JP H0565160 U JPH0565160 U JP H0565160U JP 421992 U JP421992 U JP 421992U JP 421992 U JP421992 U JP 421992U JP H0565160 U JPH0565160 U JP H0565160U
- Authority
- JP
- Japan
- Prior art keywords
- reading
- green
- red
- scanning
- blue
- 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.)
- Withdrawn
Links
Landscapes
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
(57)【要約】
【目的】 1ラインの読取走査回数を軽減できるカラー
画像読取走査装置を提供する。
【構成】 赤、緑、青の光の3原色に感応する光電変換
素子10を複数個アレイ配列した読取走査部1A〜1C
を、それぞれの赤、緑、青の光電変換素子10どうしが
上下に整合するように上下3段配置に構成された読取ヘ
ッド1を備えた構成となっている。
(57) [Abstract] [PROBLEMS] To provide a color image reading / scanning apparatus capable of reducing the number of times of scanning for reading one line. [Configuration] Reading / scanning sections 1A to 1C in which a plurality of photoelectric conversion elements 10 sensitive to the three primary colors of red, green, and blue light are arrayed.
The read heads 1 are arranged in a three-tier arrangement so that the red, green, and blue photoelectric conversion elements 10 are vertically aligned.
Description
【0001】[0001]
本考案は、カラーファクシミリ装置などに使用されるカラー画像読取装置の改 良に関する。 The present invention relates to improvement of a color image reading device used in a color facsimile device or the like.
【0002】[0002]
近時においては、原画の色を再現できるカラーファクシミリ装置が普及化され て来たが、従来のこの種のカラーファクシミリ装置の読取ヘッドは、光の3原色 を構成する赤、緑、青の光源からの放射光を原稿面に照射し、その反射光をCC Dなどの読取ヘッドで読取走査しているが、このようなものにあっては、赤、緑 、青の3種類の光源を切り換えて読取走査を行っているため、光源の種類を替え る毎に、同一の原稿面を重複して読取走査する必要がある。このため、通常のカ ラーファクシミリ装置においては、同一原稿紙を3度読取走査する必要があり、 読取走査に時間を要していた。 Recently, color facsimile machines that can reproduce the colors of the original images have become widespread, but the reading head of this type of conventional color facsimile machine uses red, green, and blue light sources that make up the three primary colors of light. The original surface is irradiated with radiated light and the reflected light is read and scanned by a CCD or other reading head. In such a case, three types of light sources, red, green, and blue, are switched. Since the reading and scanning is performed by scanning the same light source, it is necessary to read and scan the same document surface in duplicate every time the type of light source is changed. Therefore, in a normal color facsimile apparatus, it is necessary to read and scan the same original paper sheet three times, and it takes a long time to read and scan.
【0003】[0003]
本考案は、上記事情に鑑みてなされたもので、回路構成が簡単で、かつ読取走 査時間を短縮できたカラー画像読取装置を提供することを目的としている。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a color image reading apparatus having a simple circuit configuration and shortening the reading scanning time.
【0004】[0004]
上記目的を達成するために提案される本考案のカラー画像読取装置は、その読 取走査ヘッドが、赤、緑、青の光の3原色に感応する光電変換素子を複数個アレ イ配列した読取走査部を、それぞれの読取走査部において赤、緑、青の光電変換 素子どうしが上下に整合するように上下3段配置させた構造となっている。 A color image reading apparatus of the present invention proposed to achieve the above object is a reading scanning head in which a plurality of photoelectric conversion elements which are sensitive to three primary colors of red, green and blue are arrayed in an array. The scanning unit has a structure in which the red, green, and blue photoelectric conversion elements are vertically aligned in three stages in each reading and scanning unit.
【0005】[0005]
本考案のカラー画像読取装置によれば、赤、緑、青の光の3原色に感応する3 種類の光電変換素子を、複数個アレイ配列した読取走査部の各光電変換素子列を 同時駆動すれば、原稿面に記された画情報を3ライン同時に読んで、1ライン走 査させることが出来るので読取走査を高速化できる。 According to the color image reading apparatus of the present invention, each photoelectric conversion element row of the reading scanning section in which a plurality of three types of photoelectric conversion elements sensitive to the three primary colors of red, green and blue light are arrayed is driven simultaneously. For example, the image information written on the document surface can be read simultaneously for three lines and can be scanned for one line, so that the scanning speed can be increased.
【0006】[0006]
以下に、添付図を参照して、本考案の一実施例を説明する。 図1は本考案の要部をなす読取ヘッドの構造を示したものである。 図に見るように、読取ヘッド1は赤、緑、青に感応する複数の光電変換素子10 を主走査方向にアレイ配列して構成された読取走査部1A〜1Cを上下3段配置 させた構造体となっており、それぞれの読取走査部1A〜1Cにおける赤、緑、 青の光電変換素子10は、上下方向に互いに整合している。光電変換素子10を CCD素子で構成すれば、面状の薄型構造体に形成できる。 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the structure of a read head which is an essential part of the present invention. As shown in the figure, the reading head 1 has a structure in which reading scanning units 1A to 1C each having a plurality of photoelectric conversion elements 10 sensitive to red, green, and blue arranged in an array in the main scanning direction are arranged in three rows. The red, green, and blue photoelectric conversion elements 10 in each of the scanning units 1A to 1C are vertically aligned with each other. If the photoelectric conversion element 10 is composed of a CCD element, it can be formed into a planar thin structure.
【0007】 図2は読取ヘッドの読取走査手順を示している。 本考案では、同図a)〜c)に示したように、赤、緑、青に感応するそれぞれ の種類の光電変換素子10を、主走査方向に複数個アレイ配置させた読取走査部 1A〜1Cが原画の同一ラインLを重ね読みする。 このようにすれば、原画の同一ラインLの画情報は、赤、緑、青に感応する上下 3段構成の読取走査部1A〜1Cによって、赤、緑、青の光の3原色に応じた色 情報が得られるので、これらの3つの色情報を合成することによって、1画素の 色が再現される。FIG. 2 shows a reading scanning procedure of the reading head. According to the present invention, as shown in a) to c) of the drawing, a reading and scanning unit 1A including a plurality of photoelectric conversion elements 10 sensitive to red, green and blue arranged in an array in the main scanning direction. 1C overreads the same line L of the original image. By doing so, the image information of the same line L of the original image can be read by the reading / scanning units 1A to 1C of the upper and lower three stages which are sensitive to red, green and blue, according to the three primary colors of red, green and blue light. Since color information is obtained, the color of one pixel is reproduced by combining these three color information.
【0008】 図3は、本考案のカラー画像読取装置Aの概略構成を示したものである。 1は赤、緑、青に感応する上下3列のCCD素子で構成された読取走査部1A 〜1Bを備えた読取ヘッド、21〜23は読取ヘッド1の出力信号から赤、緑、 青の色相信号のみを取り出すサンプルホールド回路、31〜33は色相信号のゲ インを調整するためのゲイン調整回路、41〜43はアナログ信号として出力さ れる赤、緑、青の色相信号を複数階調のデジタル信号に変換出力するA/D変換 回路、51〜53はデジタル信号に変換された色相信号を一時的に記憶させるト グルラインメモリ、6は信号処理部を構成するCPUである。FIG. 3 shows a schematic configuration of the color image reading apparatus A of the present invention. Reference numeral 1 is a read head having read / scan units 1A-1B composed of upper and lower three rows of CCD elements that are sensitive to red, green, and blue, and reference numerals 21-23 indicate red, green, and blue hues from the output signal of the read head 1. Sample-and-hold circuits for extracting only the signals, 31 to 33 are gain adjustment circuits for adjusting the gain of the hue signal, and 41 to 43 are red, green, and blue hue signals output as analog signals. A / D conversion circuits 51 to 53 for converting and outputting signals are toggle line memories for temporarily storing the hue signals converted to digital signals, and 6 is a CPU constituting a signal processing unit.
【0009】 基本的な動作を説明すると、原画Gに対する読取走査は、原画を記した原稿紙 Pを読取ヘッド1の読取走査部1A〜1Cの幅寸法に応じたピッチで送り走査し ながら、赤、緑、青の読取走査部1A〜1Cを構成する各CCD素子10を同時 に同期して駆動することによってなされる。 赤、緑、青の読取走査部1A〜1Cより取り込まれた赤、緑、青の光信号は、 読取ヘッド1より同時に出力され、サンプルホールド回路21〜23によって色 相部分のみが取り出され、ゲイン調整回路31〜33によって赤、緑、青のCC D素子の感度に応じたゲイン調整がなされた後、A/D変換回路41〜43によ って所定の階調のデジタル信号に変換される。なお、サンプルホールド回路21 〜23と、A/D変換回路41〜43は、信号処理部6より送出されるイネーブ ル信号によって同期して駆動されている。To explain the basic operation, the scanning for reading the original image G is performed by scanning the original paper P on which the original image is printed at a pitch corresponding to the width dimensions of the reading scanning units 1A to 1C of the reading head 1 while scanning the red image. This is done by simultaneously and synchronously driving the respective CCD elements 10 constituting the green, green, and blue reading scanning sections 1A to 1C. The red, green, and blue optical signals fetched from the red, green, and blue reading scanning units 1A to 1C are simultaneously output from the reading head 1, and only the hue portion is extracted by the sample and hold circuits 21 to 23. The gains are adjusted by the adjusting circuits 31 to 33 according to the sensitivities of the red, green, and blue CCD elements, and then converted into digital signals of predetermined gradations by the A / D conversion circuits 41 to 43. .. The sample hold circuits 21 to 23 and the A / D conversion circuits 41 to 43 are driven in synchronization with the enable signal sent from the signal processing unit 6.
【0010】 A/D変換回路41〜43からデジタル信号に変換されて出力された赤、緑、 青の色相信号は、画像読取部(不図示)より、信号処理部6に送られて来た原稿 画のライン情報とともに、トグルラインメモリ51〜53に順次格納される。 信号処理部6では、トグルラインメモリ51〜53より赤、緑、青のデジタル 化された色相信号を、原稿画のライン情報とともに取り出し、明度、色度データ と合成した後、不図示のファクシミリ通信制御部を通じて、受信側のファクシミ リ装置にカラー画信号を送出する。The red, green, and blue hue signals converted into digital signals from the A / D conversion circuits 41 to 43 and sent to the signal processing unit 6 from an image reading unit (not shown). The line information of the original image is sequentially stored in the toggle line memories 51 to 53. In the signal processing unit 6, the digitized hue signals of red, green, and blue are taken out from the toggle line memories 51 to 53 together with the line information of the original image, combined with the lightness and chromaticity data, and then facsimile communication (not shown) is performed. The color image signal is sent to the fax machine on the receiving side through the control unit.
【0011】 図4は読取ヘッド1の出力信号の処理手順を示したもので、特に赤信号に対応 させた動作を示したタイムチャートである。 同図のa)は読取ヘッドからの出力信号OSR、b)はサンプルホールド駆動信 号S/HR、c)はA/D変換回路に入力されるゲイン調整回路からの出力信号 OSR’からの出力信号を示している。FIG. 4 shows a processing procedure of an output signal of the reading head 1, and is a time chart showing an operation corresponding to a red signal in particular. In the figure, a) is the output signal OSR from the read head, b) is the sample hold drive signal S / HR, and c) is the output signal from the gain adjustment circuit OSR 'which is input to the A / D conversion circuit. The signal is shown.
【0012】[0012]
以上の説明から明らかなように、本考案のカラー画像読取装置によれば、上下 3段構造とされた読取走査部は、赤、緑、青に感応できる複数の光電変換素子を アレイ配置した構造となっているので、色分解フィルターが不要となり、構造を 簡易化できる。 As is apparent from the above description, according to the color image reading apparatus of the present invention, the reading and scanning unit having the upper and lower three-stage structure has a structure in which a plurality of photoelectric conversion elements sensitive to red, green and blue are arranged in an array. Therefore, the color separation filter is not required and the structure can be simplified.
【0013】 また、読取走査部は、光の3原色に感応する光電変換素子を上下に整合配設し た構造となっているため、取り出した色相信号の処理も容易である。 更に、上 下3段配列された読取走査部のそれぞれを、原画の同一ラインに重ねて読取走査 をする構成であるため1画素も小さく出来、光源の種類を替える毎に、同一の原 稿面の読取走査を行っていた従来のカラーファクシミリ装置に比べると、読取走 査も高速化出来る。Further, since the reading / scanning unit has a structure in which photoelectric conversion elements sensitive to the three primary colors of light are vertically arranged, it is easy to process the extracted hue signal. Furthermore, since each of the scanning units arranged in the upper and lower three rows is configured to scan the scanning lines by superimposing them on the same line of the original image, one pixel can be made smaller, and the same original surface can be obtained every time the type of light source is changed. Compared with the conventional color facsimile machine, which scans and scans, the scanning speed can be increased.
【図1】本考案の要部をなす読取ヘッドの構造説明図で
ある。FIG. 1 is a structural explanatory view of a read head which is an essential part of the present invention.
【図2】読取ヘッドによる読取走査の説明図である。FIG. 2 is an explanatory diagram of reading scanning by a reading head.
【図3】本考案のカラー画像読取装置の概略構成を示し
たブロック図である。FIG. 3 is a block diagram showing a schematic configuration of a color image reading device of the present invention.
【図4】(a)〜(c)は、読取ヘッドより出力される
色信号の処理手順を示した図である。4A to 4C are diagrams showing a processing procedure of a color signal output from a reading head.
A・・・カラー画像読取装置 1・・・読取走査部 1A,1B,1C・・・読取走査部 10・・・光電変換素子 A ... Color image reading device 1 ... Reading scanning unit 1A, 1B, 1C ... Reading scanning unit 10 ... Photoelectric conversion element
Claims (1)
変換素子を複数個アレイ配列した読取走査部を、それぞ
れの赤、緑、青の光電変換素子どうしが上下に整合する
ように上下3段配置に構成された読取ヘッドを備えたカ
ラー画像読取装置。1. A reading / scanning section in which a plurality of photoelectric conversion elements sensitive to the three primary colors of red, green, and blue light are arrayed so that the respective red, green, and blue photoelectric conversion elements are vertically aligned. A color image reading apparatus having reading heads arranged in upper and lower three stages.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP421992U JPH0565160U (en) | 1992-02-06 | 1992-02-06 | Color image reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP421992U JPH0565160U (en) | 1992-02-06 | 1992-02-06 | Color image reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0565160U true JPH0565160U (en) | 1993-08-27 |
Family
ID=11578502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP421992U Withdrawn JPH0565160U (en) | 1992-02-06 | 1992-02-06 | Color image reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0565160U (en) |
-
1992
- 1992-02-06 JP JP421992U patent/JPH0565160U/en not_active Withdrawn
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Legal Events
Date | Code | Title | Description |
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A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19960606 |