CMOS Image Sensor Using Negative-Feedback Resetting to Obtain Variably Smoothed Images

• IKEBE Masayuki

  Graduate School of Information Science and Technology, Hokkaido University

• SAITO Keita

  Graduate School of Information Science and Technology, Hokkaido University

Abstract

We designed a CMOS image sensor capable of capturing variably smoothed images. This sensor uses a negative-feedback technique to set photodiode (PD) capacitance in the pixel circuit to any intermediate voltage during charge accumulation and it provides a neighboring-pixel operation by using their average value when resetting the PD capacitance. Smoothing-filter coefficients are changed by adjusting timing of the pixel-readout and neighboring-pixels operations. The performance of the proposed sensor was evaluated by SPICE simulation and numerical analysis.

Journal

• IEICE transactions on electronics

  IEICE transactions on electronics 89 (11), 1662-1669, 2006-11-01

  The Institute of Electronics, Information and Communication Engineers

Keywords

• CMOS-image sensor
• negative feedback reset
• filtersize

Details

• CRID: 1572824502428571776
• NII Article ID: 110007538705
• NII Book ID: AA10826283
• ISSN: 09168524
• Text Lang: en
• Data Source:
  • CiNii Articles