A Selfadjusting Linlog Active Pixel For Wide Dynamic Range Cmos Image Sensor

• doi: 10.1109/ICTP.2015.7427935
• title: A self-adjusting Lin-Log active pixel for wide dynamic range CMOS image sensor
• publisher: IEEE
• isbn: 978-1-4673-8687-6
• issn:
• rank: 1274
• access_type: LOCKED
• content_type: Conferences
• abstract: Due to low cost, low power consumption and better on-chip functionality CMOS Image Sensor has become the main image sensor for consumer electronics, machine vision as well as in research applications. Besides the advantages, a CMOS image sensor suffers from noises, less sensitivity as well as lacks of Dynamic Range (DR). Logarithmic response Active Pixel Sensor (APS) is a solution for wide dynamic range imager maintaining high fill factor. 3T Linear APS (Active Pixel Sensor) has better performance in low illumination, but very poor sensitivity in low illumination. For 3T logarithmic APS has satisfactory performance in high illumination, but limited sensitivity in low illumination. Few reported to implement both linear and logarithmic capture for a single frame which increases the capture time. Implementation of in-pixel circuitry to combine both linear and logarithmic in a single capture which decreases the fill factor of the pixel is also reported. In this paper, we propose a self-adjusting pixel to combine linear and logarithmic response maintaining high fill factor. The proposed pixel was simulated in Cadence Virtuoso in 180nm technology node and analyzed for comparative study of dynamic range.
• article_number: 7427935
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=7427935
• html_url: https://ieeexplore.ieee.org/document/7427935/
• abstract_url: https://ieeexplore.ieee.org/document/7427935/
• publication_title: 2015 IEEE International Conference on Telecommunications and Photonics (ICTP)
• conference_location: Dhaka, Bangladesh
• conference_dates: 26-28 Dec. 2015
• publication_number: 7422344
• is_number: 7427920
• publication_year: 2015
• publication_date: 26-28 Dec. 2015
• start_page: 1
• end_page: 4
• citing_paper_count: 7
• citing_patent_count: 0
• download_count: 787
• insert_date: 20160310
• index_terms:
  • ieee_terms:
    • Lighting
    • Dynamic range
    • Transistors
    • Photoconductivity
    • CMOS image sensors
    • Sensitivity
  • author_terms:
    • Active Pixel Sensor
    • CMOS Image Sensor
    • High Dynamic Range
    • High Fill Factor
    • Lin-Log APS
    • Self-adjusting Lin-Log APS
    • Virtuoso
  • dynamic_index_terms:
    • Dynamic Range
    • Image Sensor
    • Camera Sensor
    • Circuitry
    • Power Consumption
    • Linear Response
    • Poor Sensitivity
    • Active Sensors
    • Fill Factor
    • Machine Vision
    • Visual Navigation
    • Low Illumination
    • High Illumination
    • High Fill Factor
    • Sensor Pixel
    • CCD Camera
    • Charge-coupled Device
    • Photodiode
    • Low Voltage
    • Frame Rate
    • Low Light
    • Good Sensitivity
    • Linear Mode
    • Linear Transition
    • Analog-to-digital Converter
    • Analog-to-digital
    • Digital-to-analog Converter
    • Metal Oxide Semiconductor
    • Gate Electrode
    • Transient Response
    • Voltage Source
    • Linear Sensor
• isbn_formats:
  • format: USB ISBN, value: 978-1-4673-8687-6, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-4673-8688-3, isbnType: New-2005
• authors:
  • Author Name: Minhaz Ibna Abedin
    Affiliation: Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
    Author URL: https://ieeexplore.ieee.org/author/37085442742
    ID: 37085442742
    Order: 1
    Author Affiliations:
    • Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
  • Author Name: Akramul Islam
    Affiliation: Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
    Author URL: https://ieeexplore.ieee.org/author/37085646838
    ID: 37085646838
    Order: 2
    Author Affiliations:
    • Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
  • Author Name: Quazi Delwar Hossain
    Affiliation: Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong, Bangladesh
    Author URL: https://ieeexplore.ieee.org/author/37085344110
    ID: 37085344110
    Order: 3
    Author Affiliations:
    • Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong, Bangladesh

Image Sensor

• sensor_type: CMOS Image Sensor
• resolution: Not specified
• dynamic_range: 140 dB
• pixel_size: Not specified
• dark_current: Not specified

Optical Data

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

Performance Metrics

• power_consumption: 5 μW (approximate at low light)

Applications & Benefits

• cell_imaging: Applicable in applications such as smartphones, medical devices, automotive systems.
• benefits: Low cost, low power consumption, high dynamic range, high fill factor.

Supporting Organizations

• supported_by: Chittagong University of Engineering and Technology, Bangladesh.

Manuscript Details

• publication_date: 26-28 Dec. 2015

Relevancy Score

• score: 9
• missing_fields:
  • resolution
  • pixel_size
  • dark_current
  • focal_length
  • aperture
  • field_of_view
  • distortion
  • frame_rate
  • signal_to_noise_ratio
  • sensitivity
  • shutter_speed
  • noise

Processed JSON Filename

request_31f11339-333c-46d6-aa54-943063c1c42e-a_selfadjusting_linlog_active_pixel_for_wide_dynamic_range_cmos_image_sensor.json