A Buildin Pseudoevent Driven Readout Circuit For 3D Dtof Image Sensor

• doi: 10.1109/ICIVC58118.2023.10270245
• title: A Build-in Pseudo-Event Driven Readout Circuit for 3D dToF Image Sensor
• publisher: IEEE
• isbn: 979-8-3503-3524-8
• issn:
• rank: 525
• access_type: LOCKED
• content_type: Conferences
• abstract: The SPAD-based 3D dToF image sensor boasts a wide range of applications, attributed by its excellent photon sensitivity. However, increasing the number of time-to-digital converters (TDCs) per pixel does not necessarily enhance measurement efficiency, as photon throughput is limited by readout bandwidth. Moreover, an immense volume of TDC data put the readout circuit under enormous press. A $\mathbf{128}\times \mathbf{128}$ pixels image sensor with an integrated pseudo-event driven readout circuit and 8-bit shared TDC which is designed and fabricated in 180-nm CMOS technology is demonstrated for the ability of reducing data scale and increasing read bandwidth effectively. The proposed pseudo-event driven circuit substantially diminishes the amount of readout data, achieving 94% reduction in data volume at point rate 3%. The chip is capable of both grayscale and depth imaging paired with an area array laser, offering 3 cm accuracy and a maximum range of up to 200 m.
• article_number: 10270245
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10270245
• html_url: https://ieeexplore.ieee.org/document/10270245/
• abstract_url: https://ieeexplore.ieee.org/document/10270245/
• publication_title: 2023 8th International Conference on Image, Vision and Computing (ICIVC)
• conference_location: Dalian, China
• conference_dates: 27-29 July 2023
• publication_number: 10269794
• is_number: 10269801
• publication_year: 2023
• publication_date: 27-29 July 2023
• start_page: 548
• end_page: 552
• citing_paper_count: 0
• citing_patent_count: 0
• download_count: 264
• insert_date: 20231009
• index_terms:
  • ieee_terms:
    • Image sensors
    • Presses
    • Three-dimensional displays
    • Image resolution
    • Sensitivity
    • Bandwidth
    • Throughput
  • author_terms:
    • dToF
    • image sensor
    • circuit
    • laser
    • SPAD
    • event driven readout
  • dynamic_index_terms:
    • Image Sensor
    • Camera Sensor
    • Readout Circuit
    • Volume Of Data
    • Intensity Data
    • Grayscale Images
    • Greyscale Images
    • Depth Images
    • Time-to-digital Converter
    • Data Readout
    • Validation Data
    • Time-of-flight
    • 3D Images
    • Laser Power
    • Output Data
    • Yield Data
    • Range Resolution
    • Environmental Noise
    • Data Frame
    • Time-correlated Single-photon Counting
    • TCSPC
    • High Frame Rate
    • Fluorescence Lifetime Imaging Microscopy
    • FLIM
    • Fluorescence Lifetime Imaging
    • 3D Mode
    • Single-photon Avalanche Diode
• isbn_formats:
  • format: Print on Demand(PoD) ISBN, value: 979-8-3503-3524-8, isbnType: New-2005
  • format: USB ISBN, value: 979-8-3503-3522-4, isbnType: New-2005
  • format: Electronic ISBN, value: 979-8-3503-3523-1, isbnType: New-2005
• authors:
  • Author Name: Xin Sun
    Affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, China
    Author URL: https://ieeexplore.ieee.org/author/37090038272
    ID: 37090038272
    Order: 1
    Author Affiliations:
    • School of Electronic Science and Engineering, Nanjing University, Nanjing, China
  • Author Name: Jingyi Zhao
    Affiliation: College of Information Science and Engineering, China University of Petroleum, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37090036374
    ID: 37090036374
    Order: 2
    Author Affiliations:
    • College of Information Science and Engineering, China University of Petroleum, Beijing, China
  • Author Name: Cheng Mao
    Affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, China
    Author URL: https://ieeexplore.ieee.org/author/37086612065
    ID: 37086612065
    Order: 3
    Author Affiliations:
    • School of Electronic Science and Engineering, Nanjing University, Nanjing, China
  • Author Name: Hu Yan
    Affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, China
    Author URL: https://ieeexplore.ieee.org/author/37090036089
    ID: 37090036089
    Order: 4
    Author Affiliations:
    • School of Electronic Science and Engineering, Nanjing University, Nanjing, China
  • Author Name: Hongcun He
    Affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, China
    Author URL: https://ieeexplore.ieee.org/author/37090035674
    ID: 37090035674
    Order: 5
    Author Affiliations:
    • School of Electronic Science and Engineering, Nanjing University, Nanjing, China
  • Author Name: Xiangshun Kong
    Affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, China
    Author URL: https://ieeexplore.ieee.org/author/37086611652
    ID: 37086611652
    Order: 6
    Author Affiliations:
    • School of Electronic Science and Engineering, Nanjing University, Nanjing, China

Image Sensor

• sensor_type: SPAD-based 3D dToF image sensor
• resolution: 128x128 pixels
• dynamic_range: not specified
• pixel_size: 64 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: 20 kHz (laser synchronization)
• noise: 0.61 LSB measurement time jitter

Applications & Benefits

• cell_imaging: Not directly addressed, but implies application in 3D imaging and possibly medical imaging.
• benefits: Reduces readout data volume by 94% at low point rates, enabling higher efficiency in imaging.

Supporting Organizations

• supported_by: Nanjing University, China University of Petroleum

Manuscript Details

• publication_date: 27-29 July 2023

Relevancy Score

• score: 10

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