JPH01103779A - Image scanner - Google Patents

Image scanner

Info

Publication number
JPH01103779A
JPH01103779A JP62262282A JP26228287A JPH01103779A JP H01103779 A JPH01103779 A JP H01103779A JP 62262282 A JP62262282 A JP 62262282A JP 26228287 A JP26228287 A JP 26228287A JP H01103779 A JPH01103779 A JP H01103779A
Authority
JP
Japan
Prior art keywords
ccd
power source
signal
word processor
image sensor
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
Application number
JP62262282A
Other languages
Japanese (ja)
Inventor
Atsuo Nishijima
西島 敦夫
Haruyuki Koizumi
小泉 治幸
Tokuji Morii
森井 徳治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP62262282A priority Critical patent/JPH01103779A/en
Publication of JPH01103779A publication Critical patent/JPH01103779A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To execute signal accumulating operation in a buffer part without fail by stabilizing a power source from an external equipment with a stabilizing power source and obtaining the power source as a control power source for CCD accumulation. CONSTITUTION:To an image scanner 2, an image sensor 3 composed of a photo- electric converting part 5 to output a CCD signal, a transfer part and a buffer part 7 to accumulate the CCD signal is equipped together with a three-terminal regulator 15 of the stabilizing power source. The supplying power source from the external equipment of a word processor 1, etc., is stabilized by the regulator 15 and goes to the control power source and the buffer part 7 is controlled. Then, the CCD signal accumulating operation is stably executed and the display image quality of the word processor, etc., is extremely improved.

Description

【発明の詳細な説明】 (発明の分野) 本発明は、多数の微小光電変換素子で構成された光電変
換部と、前記光電変換部で光電変換されて出力されてく
る信号(CCD信号)を受け、受けたそのCCD信号を
順次に転送出力する転送部と、前記転送部から順次に転
送出力されてぐるCCD信号を受けるバッファ部とで構
成され、前記バッファ部におけるCCD信号蓄積部での
蓄積動作を制御する電源をワードプロセッサ等の外部機
器から与えられるCCDイメージセンサを具備したイメ
ージスキャナに関する。
Detailed Description of the Invention (Field of the Invention) The present invention relates to a photoelectric conversion section composed of a large number of minute photoelectric conversion elements, and a signal (CCD signal) that is photoelectrically converted and outputted by the photoelectric conversion section. It consists of a transfer section that sequentially transfers and outputs the received CCD signals, and a buffer section that receives the CCD signals that are sequentially transferred and output from the transfer section. The present invention relates to an image scanner equipped with a CCD image sensor whose operation is supplied with power from an external device such as a word processor.

(従来技術とその問題点) 第2図は外部機器としてのワードプロセッサとそれに接
続された従来例のイメージスキャナとの概略構成図であ
る。この図において、■はワードプロセッサ、2はCC
Dイメージセンサ3を具備したイメージスキャナである
。このCCDイメージセンサ3は回路基板4に搭載され
ている。
(Prior art and its problems) FIG. 2 is a schematic diagram of a word processor as an external device and a conventional image scanner connected thereto. In this figure, ■ is a word processor, 2 is a CC
This is an image scanner equipped with a D image sensor 3. This CCD image sensor 3 is mounted on a circuit board 4.

第3図はCCDイメージセンサ3の概略構成図である。FIG. 3 is a schematic diagram of the CCD image sensor 3. As shown in FIG.

第3図において、5は多数の微小光電変換素子5a 、
5a 、・・・で構成された光電変換部、6は光電変換
部5で光電変換されて出力されてくる信号(CCD信号
)を受け、受けたそのCCD信号を順次に転送出力する
転送部、7は転送部6から順次に転送出力されてくるC
CD信号を受けるバッファ部である。
In FIG. 3, 5 is a large number of microphotoelectric conversion elements 5a,
5a, a photoelectric conversion section consisting of . 7 is C that is sequentially transferred and output from the transfer unit 6.
This is a buffer section that receives CD signals.

このように構成されたCCDイメージセンサ3において
、バッファ部7におけるCCD信号蓄積部としてのコン
デンサ8でのCCD信号の蓄積動作について説明する。
In the CCD image sensor 3 configured in this manner, the operation of accumulating CCD signals in the capacitor 8 as a CCD signal accumulating section in the buffer section 7 will be described.

まず、クロックに応答してトランジスタ14がオンする
と、電源端子9に対してワードプロセッサ1から電源線
lOを介して与えられている電源によりそれまでコンデ
ンサ8に蓄積されていた前のCCD信号の電荷が打ち消
されてその蓄積電荷量が一定値に戻される。次いで、ト
ランジスタ14がオフして転送部6からのCCD信号の
電荷がコンデンサ8に蓄積される。
First, when the transistor 14 is turned on in response to a clock, the electric charge of the previous CCD signal that had been accumulated in the capacitor 8 is removed by the power supplied from the word processor 1 to the power supply terminal 9 via the power supply line IO. This is canceled out and the amount of accumulated charge is returned to a constant value. Then, the transistor 14 is turned off and the charge of the CCD signal from the transfer section 6 is accumulated in the capacitor 8.

このようにして、コンデンサ8はワードプロセッサ1か
らの電源により直接その蓄積動作を制御される。
In this way, the storage operation of capacitor 8 is directly controlled by the power supply from word processor 1.

第2図に戻って、11はワードプロセッサ1からイメー
ジスキャナ2に与えられる他の電源線であり、I2はイ
メージスキャナ2からワードプロセッサ1に与えられる
信号の伝送線、13はCCDイメージセンサ3からの信
号の出力用トランジスタである。
Returning to FIG. 2, 11 is another power supply line given from the word processor 1 to the image scanner 2, I2 is a signal transmission line given from the image scanner 2 to the word processor 1, and 13 is a signal from the CCD image sensor 3. This is an output transistor.

このようなイメージスキャナ2においては、ワードプロ
セッサlから直接、電源線10を介してCCDイメージ
センサ3のバッファ部7の電源端子9に電源が供給され
るように構成されているが、その電源線10にはスイッ
チングノイズ等の外来ノイズが乗っており、その外来ノ
イズが乗っている場合では、バッファ部7のコンデンサ
8におけるCCD信号の蓄積動作が不十分になり、その
結果、CCDイメージセンサ3から出力されてくる信号
に基づいてワードプロセッサ1のCRT画面上に表示さ
れる画像の画質が劣化するという問題があった。
In such an image scanner 2, power is supplied directly from the word processor l to the power terminal 9 of the buffer section 7 of the CCD image sensor 3 via the power line 10. is loaded with external noise such as switching noise, and when the external noise is loaded, the storage operation of the CCD signal in the capacitor 8 of the buffer section 7 becomes insufficient, and as a result, the output from the CCD image sensor 3 There is a problem in that the image quality of the image displayed on the CRT screen of the word processor 1 deteriorates based on the received signal.

(発明の目的) 本発明は、このような事情に鑑みてなされたものであっ
て、CCDイメージセンサのバッファ部における信号蓄
積動作を確実に行えるようにしてワードプロセッサ等の
外部機器の表示器画面上での画像の画質を向上させるこ
とを目的としている。
(Object of the Invention) The present invention has been made in view of the above-mentioned circumstances, and it is possible to reliably perform the signal accumulation operation in the buffer section of the CCD image sensor so that the signal can be displayed on the display screen of an external device such as a word processor. The purpose is to improve the image quality of images.

(発明の構成と効果) 本発明は、このような目的を達成するために、上記構成
のCCDイメージセンサに安定化電源を設け、ワードプ
ロセッサ等の外部機器からの電源をこの安定化電源で安
定化してからバッファ部のCCD信号蓄積部での蓄積動
作の制御電源に用いたことを特徴としている。
(Structure and Effects of the Invention) In order to achieve the above object, the present invention provides a stabilized power source in the CCD image sensor having the above configuration, and stabilizes the power source from an external device such as a word processor with this stabilized power source. It is characterized in that it is used as a control power source for the storage operation in the CCD signal storage section of the buffer section.

この構成によれば、外部機器の電源線に外来ノイズが乗
っていても安定化電源により安定化されてから上記蓄積
動作の制御電源としてその外部機器の電源が用いられる
から、その蓄積動作が確実に行える。
According to this configuration, even if there is external noise on the power line of the external device, it is stabilized by the stabilized power supply and then the power source of the external device is used as the control power source for the storage operation, so the storage operation is ensured. can be done.

したがって、本発明では、CCDイメージセンサからの
信号に基づいた外部機器の表示器画面上における画像の
画質を向上させることができる。
Therefore, according to the present invention, it is possible to improve the image quality of an image on the display screen of an external device based on a signal from a CCD image sensor.

(実施例の説明) 以下、本発明の実施例を図面を参照して詳細に説明する
。第1図はワードプロセッサとそのワードプロセッサの
電源により駆動される本発明の実施例に係るイメージス
キャナとの概略構成図であり、第2図と対応する部分に
は同一の符号を付している。第1図において、lはワー
ドプロセッサ、2はイメージスキャナ、3は回路基板4
に搭載されたCCDイメージセンサである。このCCD
イメージセンサ3は従来例と同様にして第3図の回路構
成を具備している。
(Description of Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of a word processor and an image scanner according to an embodiment of the present invention driven by the power source of the word processor, and parts corresponding to those in FIG. 2 are given the same reference numerals. In FIG. 1, l is a word processor, 2 is an image scanner, and 3 is a circuit board 4.
This is a CCD image sensor installed in the. This CCD
The image sensor 3 has the circuit configuration shown in FIG. 3, similar to the conventional example.

本実施例では次の構成に特徴を有している。すなわち、
本実施例のイメージスキャナにあっては、CCDイメー
ジセンサ3搭載の回路基板4にワードプロセッサlから
電源線10を介して与えられる電源を安定化するための
安定化電源としての3端子レギユレータ15を備える。
This embodiment is characterized by the following configuration. That is,
In the image scanner of this embodiment, the circuit board 4 on which the CCD image sensor 3 is mounted is provided with a three-terminal regulator 15 as a stabilizing power source for stabilizing the power supplied from the word processor l via the power line 10. .

そして、この3端子レギユレータ15の出力部I6がC
CDイメージセンサ3の電源端子9に接続されている。
Then, the output part I6 of this three-terminal regulator 15 is C
It is connected to the power supply terminal 9 of the CD image sensor 3.

したがって、CCDイメージセンサ3のバッファ部7の
コンデンサ8はそのCCD信号の電荷の蓄種動作を安定
化された電源により制御されることになる結果、CCD
イメージセンサ3からワードプロセッサ1には、その信
号線12を介して光電変換部5で光電変換された画像に
係るCCD信号が与えられることになり、ワードプロセ
ッサlのCRT画面上での画像の画質は大幅に向上する
Therefore, the operation of the capacitor 8 of the buffer section 7 of the CCD image sensor 3 is controlled by the stabilized power supply for the charge storage operation of the CCD signal, and as a result, the CCD
A CCD signal related to the image photoelectrically converted by the photoelectric converter 5 is given from the image sensor 3 to the word processor 1 via the signal line 12, and the image quality of the image on the CRT screen of the word processor 1 is greatly improved. improve.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はワードプロセッサと本発明の一実施例に係るイ
メージスキャナとの概略構成図、第2図はワードプロセ
ッサと従来例のイメージスキャナとの概略構成図、第3
図はイメージスキャナのCCDイメージセンサの内部回
路構成図である。 ■・・・ワードプロセッサ、2・・・イメージスキャナ
、3・・・CCDイメージセンサ、4・・・回路基板、
5・・光電変換部、6・・・転送部、7・・・バッファ
部、8・・・蓄積部としてのコンデンサ、9・・・電源
端子、10・・・電源線。
FIG. 1 is a schematic configuration diagram of a word processor and an image scanner according to an embodiment of the present invention, FIG. 2 is a schematic configuration diagram of a word processor and a conventional image scanner, and FIG.
The figure is an internal circuit configuration diagram of a CCD image sensor of an image scanner. ■... Word processor, 2... Image scanner, 3... CCD image sensor, 4... Circuit board,
5... Photoelectric conversion unit, 6... Transfer unit, 7... Buffer unit, 8... Capacitor as storage unit, 9... Power terminal, 10... Power line.

Claims (1)

【特許請求の範囲】[Claims] (1)多数の微小光電変換素子で構成された光電変換部
と、前記光電変換部で光電変換されて出力されてくる信
号(CCD信号)を受け、受けたそのCCD信号を順次
に転送出力する転送部と、前記転送部から順次に転送出
力されてくるCCD信号を受けるバッファ部とで構成さ
れ、前記バッファ部におけるCCD信号蓄積部での蓄積
動作を制御する電源をワードプロセッサ等の外部機器か
ら与えられるCCDイメージセンサを具備したイメージ
スキャナにおいて、 前記CCDイメージセンサに安定化電源を設け、前記外
部機器からの電源をこの安定化電源で安定化してから前
記CCD信号蓄積部での蓄積動作の制御電源に用いたこ
とを特徴とするイメージスキャナ。
(1) A photoelectric conversion unit composed of a large number of microphotoelectric conversion elements receives a signal (CCD signal) that is photoelectrically converted and output by the photoelectric conversion unit, and sequentially transfers and outputs the received CCD signal. It is composed of a transfer section and a buffer section that receives CCD signals sequentially transferred and output from the transfer section, and is supplied with power from an external device such as a word processor to control the storage operation in the CCD signal storage section in the buffer section. In an image scanner equipped with a CCD image sensor, the CCD image sensor is provided with a stabilized power supply, and after the power supply from the external device is stabilized by the stabilized power supply, the control power supply for the accumulation operation in the CCD signal accumulation section is provided. An image scanner characterized by being used for.
JP62262282A 1987-10-16 1987-10-16 Image scanner Pending JPH01103779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62262282A JPH01103779A (en) 1987-10-16 1987-10-16 Image scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62262282A JPH01103779A (en) 1987-10-16 1987-10-16 Image scanner

Publications (1)

Publication Number Publication Date
JPH01103779A true JPH01103779A (en) 1989-04-20

Family

ID=17373625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62262282A Pending JPH01103779A (en) 1987-10-16 1987-10-16 Image scanner

Country Status (1)

Country Link
JP (1) JPH01103779A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695530A1 (en) * 1992-09-10 1994-03-11 Sopro Sa Image sensor integrated into data processing system - uses video camera of which image pick=up is distant from control system, with remote sensor control unit and interface combined in extension card, and camera operated from computer system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170282A (en) * 1982-03-31 1983-10-06 Toshiba Corp Optical transmitter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58170282A (en) * 1982-03-31 1983-10-06 Toshiba Corp Optical transmitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695530A1 (en) * 1992-09-10 1994-03-11 Sopro Sa Image sensor integrated into data processing system - uses video camera of which image pick=up is distant from control system, with remote sensor control unit and interface combined in extension card, and camera operated from computer system

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