JP2003198813A5 - - Google Patents

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JP2003198813A5
JP2003198813A5 JP2002292409A JP2002292409A JP2003198813A5 JP 2003198813 A5 JP2003198813 A5 JP 2003198813A5 JP 2002292409 A JP2002292409 A JP 2002292409A JP 2002292409 A JP2002292409 A JP 2002292409A JP 2003198813 A5 JP2003198813 A5 JP 2003198813A5
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signal
light
unit
image reading
reading apparatus
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JP2002292409A
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JP2003198813A (en
JP4065515B2 (en
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Claims (10)

複数のチャネルを有し、被写体からの光を受光可能な受光部と遮光された遮光部とを複数のチャネルに対応して備え、前記受光部から出力される第１の信号と前記遮光部から出力される第２の信号とを前記チャネルごとにそれぞれ出力する撮像手段と、
前記撮像手段から前記チャネルごとに出力される信号を所定の順序に並び替える並び替え手段と、
前記並び替え手段よりも後段に配置され、前記第２の信号と前記受光部に光が入射しないようにした状態で前記受光部から出力される第３の信号とに基づいて前記第１の信号の信号レベルを補正する信号補正手段と、
を有することを特徴とする画像読み取り装置。A plurality of channels, a light receiving unit capable of receiving light from the subject, and a light-shielded light-shielding unit corresponding to the plurality of channels, the first signal output from the light-receiving unit and the light-shielding unit Imaging means for outputting each output second signal for each channel;
Rearrangement means for rearranging signals output from the imaging means for each channel in a predetermined order;
Based on the second signal and the third signal output from the light receiving unit in a state in which light is not incident on the light receiving unit, the first signal is disposed after the rearranging unit. Signal correction means for correcting the signal level of
An image reading apparatus comprising: 前記信号補正手段は、前記第１の信号を前記第２の信号に基づいて補正した後で前記第３の信号に基づいて補正することを特徴とする請求項１に記載の画像読み取り装置。  The image reading apparatus according to claim 1, wherein the signal correction unit corrects the first signal based on the second signal after correcting the first signal based on the second signal. 前記信号補正手段は、前記第２の信号に基づいて前記第３の信号を補正し、補正した前記第３の信号に基いて前記第１の信号を補正することを特徴とする請求項１に記載の画像読み取り装置。  The signal correction means corrects the third signal based on the second signal, and corrects the first signal based on the corrected third signal. The image reading apparatus described. 前記信号補正手段は、前記第１の信号のオフセットレベルを補正することを特徴とする請求項１〜３のいずれかに記載の画像読み取り装置。  The image reading apparatus according to claim 1, wherein the signal correction unit corrects an offset level of the first signal. 前記被写体としての原稿と前記撮像手段とを相対的に移動させる移動手段と、前記撮像手段により複数枚の原稿画像を読み取る場合に、前記信号補正手段が前記複数枚の原稿間において前記第２の信号に基いて前記第１の信号を補正するように制御する制御手段とを有することを特徴とする請求項１〜４のいずれかに記載の画像読み取り装置。  In the case where a plurality of document images are read by the image capturing unit and a moving unit that relatively moves the document as the subject and the image capturing unit, the signal correction unit performs the second correction between the plurality of documents. The image reading apparatus according to claim 1, further comprising a control unit that performs control so as to correct the first signal based on a signal. 前記被写体を照射する光源を有し、前記第３の信号は前記光源が消灯している場合に前記受光部から出力される信号であることを特徴とする請求項１〜５のいずれかに記載の画像読み取り装置。  6. The apparatus according to claim 1, further comprising: a light source that irradiates the subject, wherein the third signal is a signal output from the light receiving unit when the light source is turned off. Image reading device. 前記撮像手段から出力されるアナログ信号をデジタル信号に変換する変換手段を有し、前記信号補正手段は、前記変換手段により変換されたデジタル信号を補正することを特徴とする請求項１〜６のいずれかに記載の画像読み取り装置。  7. The apparatus according to claim 1, further comprising a conversion unit that converts an analog signal output from the imaging unit into a digital signal, wherein the signal correction unit corrects the digital signal converted by the conversion unit. The image reading apparatus according to any one of the above. 前記撮像手段は複数のチップからなり、前記チャネルは前記チップごとに設けられていることを特徴とする請求項１〜７のいずれかに記載の画像読み取り装置。  The image reading apparatus according to claim 1, wherein the imaging unit includes a plurality of chips, and the channel is provided for each chip. 複数のチャネルを有し、被写体からの光を受光可能な受光部と遮光された遮光部とを複数のチャンネルに対応して備え、前記受光部から出力される第１の信号と前記遮光部から出力される第２の信号とを前記チャネルごとにそれぞれ出力する撮像手段を有する画像読み取り装置の信号補正方法であって、
前記撮像手段から前記チャネルごとに出力される信号を所定の順序に並び替え、前記第２の信号と前記受光部に光が入射しないようにした状態で前記受光部から出力される第３の信号とに基づいて前記第１の信号の信号レベルを補正することを特徴とする信号補正方法。A plurality of channels, a light receiving unit capable of receiving light from a subject, and a light-shielded light-shielding unit corresponding to the plurality of channels, the first signal output from the light-receiving unit and the light-shielding unit A signal correction method for an image reading apparatus having imaging means for outputting each output second signal for each channel,
The signals output from the imaging means for each of the channels are rearranged in a predetermined order, and the second signal and the third signal output from the light receiving unit in a state in which light does not enter the light receiving unit. And correcting the signal level of the first signal based on the above. 請求項９に記載の信号補正方法をコンピュータ制御により実行させるためのプログラム。  The program for performing the signal correction method of Claim 9 by computer control.
JP2002292409A 2001-10-17 2002-10-04 Image reading device Expired - Fee Related JP4065515B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002292409A JP4065515B2 (en) 2001-10-17 2002-10-04 Image reading device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-319279 2001-10-17
JP2001319279 2001-10-17
JP2002292409A JP4065515B2 (en) 2001-10-17 2002-10-04 Image reading device

Publications (3)

Publication Number Publication Date
JP2003198813A JP2003198813A (en) 2003-07-11
JP2003198813A5 true JP2003198813A5 (en) 2005-10-20
JP4065515B2 JP4065515B2 (en) 2008-03-26

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008118269A (en) * 2006-11-01 2008-05-22 Ricoh Co Ltd Device for reading image, device for storing image, and digital compounding machine
JP5172267B2 (en) 2007-10-09 2013-03-27 富士フイルム株式会社 Imaging device
JP2010136164A (en) 2008-12-05 2010-06-17 Ricoh Co Ltd Image reading apparatus
JP2011097528A (en) * 2009-11-02 2011-05-12 Ricoh Co Ltd Image reader, and image formation device
JP5652058B2 (en) * 2010-09-01 2015-01-14 株式会社リコー Image reading apparatus and image forming apparatus having the same
WO2016147524A1 (en) 2015-03-19 2016-09-22 パナソニックＩｐマネジメント株式会社 Image reading device
JP6263749B2 (en) 2015-03-19 2018-01-24 パナソニックＩｐマネジメント株式会社 Image reading device
WO2016152013A1 (en) 2015-03-26 2016-09-29 パナソニックＩｐマネジメント株式会社 Image reading device
JP6118997B2 (en) 2015-03-27 2017-04-26 パナソニックＩｐマネジメント株式会社 Image reading device
WO2016157729A1 (en) 2015-03-27 2016-10-06 パナソニックＩｐマネジメント株式会社 Image reading device

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