An Image Sensor With An Inpixel Demodulation Function For Detecting The Intensity Of A Modulated Light Signal

• doi: 10.1109/TED.2002.806479
• title: An image sensor with an in-pixel demodulation function for detecting the intensity of a modulated light signal
• publisher: IEEE
• isbn:
• issn: 1557-9646
• rank: 1578
• access_type: LOCKED
• content_type: Journals
• abstract: An image sensor with an in-pixel demodulation function for detecting modulated light is proposed and demonstrated. The pixel has two floating diffusion regions, one of which stores charges produced by static illumination, and the other stores charges produced by both static and modulated illumination. By subtracting the two outputs, images produced only by the modulated illumination can be obtained. Based on the proposed circuit, an image sensor with 64 /spl times/ 64 pixels is fabricated using a 0.6 /spl mu/m two-poly three-metal CMOS technology. Using this sensor, we successfully demonstrate the extraction of the modulated component of images under constant illumination conditions. In addition, for the application of motion capture, we demonstrate that a marker, which is a modulated light source, can be extracted from a captured image under several light conditions by using this sensor. Finally, means of improving the characteristics of charge transfer efficiency are discussed.
• article_number: 1185178
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1185178
• html_url: https://ieeexplore.ieee.org/document/1185178/
• abstract_url: https://ieeexplore.ieee.org/document/1185178/
• publication_title: IEEE Transactions on Electron Devices
• conference_location:
• conference_dates:
• publication_number: 16
• is_number: 26588
• publication_year: 2003
• publication_date: Jan. 2003
• start_page: 166
• end_page: 172
• citing_paper_count: 25
• citing_patent_count: 1
• download_count: 373
• insert_date: 20030310
• index_terms:
  • ieee_terms:
    • Demodulation
    • Optical modulation
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Modulated Light Signal
    • Demodulation Function
    • Light Source
    • Motion Capture
    • MoCap
    • Illumination Conditions
    • CMOS Technology
    • Parasite
    • Light Intensity
    • Modulation Of Signaling
    • Operation Principle
    • White LED
    • Lead White
    • White Light Emitting Diodes
    • Standard Technology
    • Constant Light
    • Static Background
    • Background Illumination
• authors:
  • Author Name: J. Ohta
    Affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
    Author URL: https://ieeexplore.ieee.org/author/37278016600
    ID: 37278016600
    Order: 1
    Author Affiliations:
    • Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
  • Author Name: K. Yamamoto
    Affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
    Author URL: https://ieeexplore.ieee.org/author/38149498500
    ID: 38149498500
    Order: 2
    Author Affiliations:
    • Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
  • Author Name: T. Hirai
    Affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
    Author URL: https://ieeexplore.ieee.org/author/37089097471
    ID: 37089097471
    Order: 3
    Author Affiliations:
    • Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
  • Author Name: K. Kagawa
    Affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
    Author URL: https://ieeexplore.ieee.org/author/37278023200
    ID: 37278023200
    Order: 4
    Author Affiliations:
    • Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
  • Author Name: M. Nunoshita
    Affiliation: Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
    Author URL: https://ieeexplore.ieee.org/author/37278019400
    ID: 37278019400
    Order: 5
    Author Affiliations:
    • Graduate School of Materials Science, Nara Institute of Science and Technology, Nara, Japan
  • Author Name: M. Yamada
    Affiliation: Microsignal Company Limited, Kyoto, Japan
    Author URL: https://ieeexplore.ieee.org/author/37089120406
    ID: 37089120406
    Order: 6
    Author Affiliations:
    • Microsignal Company Limited, Kyoto, Japan
  • Author Name: Y. Yamasaki
    Affiliation: Microsignal Company Limited, Kyoto, Japan
    Author URL: https://ieeexplore.ieee.org/author/37087698003
    ID: 37087698003
    Order: 7
    Author Affiliations:
    • Microsignal Company Limited, Kyoto, Japan
  • Author Name: S. Sugishita
    Affiliation: Microsignal Company Limited, Kyoto, Japan
    Author URL: https://ieeexplore.ieee.org/author/37087697574
    ID: 37087697574
    Order: 8
    Author Affiliations:
    • Microsignal Company Limited, Kyoto, Japan
  • Author Name: K. Watanabe
    Affiliation: Microsignal Company Limited, Kyoto, Japan
    Author URL: https://ieeexplore.ieee.org/author/37087695753
    ID: 37087695753
    Order: 9
    Author Affiliations:
    • Microsignal Company Limited, Kyoto, Japan

Image Sensor

• sensor_type: CMOS
• resolution: 64x64 pixels
• dynamic_range: 25 dB
• pixel_size: 0.6 µm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• frame_rate: 1.28 ms per frame

Applications & Benefits

• cell_imaging: Applied to motion capture and target tracking under varying illumination conditions, effective in reducing background noise.
• benefits: Can successfully extract modulated components even under constant illumination conditions.

Supporting Organizations

• supported_by: Nara Institute of Science and Technology, Microsignal Co., Ltd.

Manuscript Details

• publication_date: Jan. 2003

Relevancy Score

• score: 10
• missing_fields:
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed
  • power_consumption
  • noise

Processed JSON Filename

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