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CMOS Image Sensor for Ambient Light Suppression by means of Current-mode Pixel Circuit
http://hdl.handle.net/2261/29070
http://hdl.handle.net/2261/290709b34f9e4-9a84-437c-97ed-9b99e9a6b39d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
37066911.pdf (4.1 MB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-08-08 | |||||
| タイトル | ||||||
| タイトル | CMOS Image Sensor for Ambient Light Suppression by means of Current-mode Pixel Circuit | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | cmos image sensor | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | ambient light suppression | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | current-mode | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_46ec | |||||
| タイプ | thesis | |||||
| その他のタイトル | ||||||
| その他のタイトル | 電流モードピクセル回路による背景光除去機能付CMOSイメージセンサ | |||||
| 著者 |
Caner, Basci
× Caner, Basci |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 5805 | |||||
| 姓名 | シャネル, バッチ | |||||
| 著者所属 | ||||||
| 著者所属 | 東京大学大学院工学系研究科 電子工学専攻 | |||||
| 著者所属 | ||||||
| 著者所属 | Department of Electronic Engineering, The University of Tokyo | |||||
| Abstract | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This thesis describes the design and implementation of a new CMOS image sensor for ambient light suppression by using a current-mode pixel circuit. To obtain an acceptable accuracy, a procedure to reduce the negative effects of ambient light on CMOS imaging is proposed and implemented. A prototype pixel circuit including a switched current memory for ambient light storage associated with a subtraction and I-V conversion circuit was designed with a 0.18um technology. The sensor operates with a high accuracy in a very weak current range and the effect of the charge injection related with the ambient light storage is reduced significantly by employing an efficient charge compensation scheme. The simulation results show that the current memorization efficiency of the proposed pixel circuit is more than 99% and the suppression efficiency is around 99% for high background illumination with a very low source current. The sensor can achieve a Signal-to-Background Ratio (SBR) of -32dB. It is also capable of internally generated Region of Interest (ROI) readout. Ambient light suppression and ROI readout options can be chosen by means of its internal sensor controller block. All the timing information is parametrized and Open Core Protocol (OCP) interface implemented in the sensor controller circuit enables the sensor to communicate with the external user. | |||||
| 書誌情報 | 発行日 2008-03-24 | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 549 | |||||
| 学位名 | ||||||
| 学位名 | 修士(工学) | |||||
| 学位 | ||||||
| 値 | master | |||||
| 研究科・専攻 | ||||||
| 工学系研究科電子工学専攻 | ||||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2008-03-24 | |||||
