A Singlechip Cmos Aps Camera With Direct Frame Difference Output

• doi: 10.1109/4.792618
• title: A single-chip CMOS APS camera with direct frame difference output
• publisher: IEEE
• isbn:
• issn: 1558-173X
• rank: 1293
• access_type: LOCKED
• content_type: Journals
• abstract: A complementary metal-oxide-semiconductor (CMOS) active pixel sensor (APS) camera chip with direct frame difference output is reported in this paper. The proposed APS cell circuit has in-pixel storage for previous frame image data so that the current frame image and the previous frame image can be read out simultaneously in differential mode. The signal swing of the pixel circuit is maximized for low supply voltage operation. The pixel circuit occupies 32.2/spl times/32.2 /spl mu/m/sup 2/ of chip area with a fill factor of 33%. A 128/spl times/98 element prototype camera chip with an on-chip 8-bit analog-to-digital converter has been fabricated in a 0.5-/spl mu/m double-poly double-metal CMOS process and successfully tested. The camera chip consumes 56 mW at 30 frames/s with 3.3 V power supply.
• article_number: 792618
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=792618
• html_url: https://ieeexplore.ieee.org/document/792618/
• abstract_url: https://ieeexplore.ieee.org/document/792618/
• publication_title: IEEE Journal of Solid-State Circuits
• conference_location:
• conference_dates:
• publication_number: 4
• is_number: 17209
• publication_year: 1999
• publication_date: Oct. 1999
• start_page: 1415
• end_page: 1418
• citing_paper_count: 53
• citing_patent_count: 3
• download_count: 468
• insert_date: 20020806
• index_terms:
  • ieee_terms:
    • CMOS image sensors
    • Cameras
    • Circuits
    • Low voltage
    • CMOS process
    • Sensor arrays
    • Image storage
    • Power supplies
    • Pixel
    • Motion detection
  • dynamic_index_terms:
    • Direct Output
    • Direct Yield
    • Active Pixel Sensor
    • Low Voltage
    • Image Frames
    • Supply Voltage
    • Active Sensors
    • Current Frame
    • Previous Frame
    • Low-voltage Operation
    • Signal Processing
    • Photodiode
    • Sample Holder
    • Voltage Drop
    • Potential Drop
    • IR Drop
    • Signal Values
    • Threshold Voltage
    • Motion Detection
    • Motion Sensors
    • Consecutive Frames
    • Sensor Array
    • Least Significant Bit
    • Low Bit
    • Readout Circuit
    • Power Supply Voltage
    • Signal Readout
    • Output Line
    • Video Compression
    • Signal Path
    • Reset Voltage
    • Regeneration Buffer
    • Framebuffer
    • Display Memory
    • Double Sampling
• authors:
  • Author Name: Shyh-Yih Ma
    Affiliation: Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
    Author URL: https://ieeexplore.ieee.org/author/37087074010
    ID: 37087074010
    Order: 1
    Author Affiliations:
    • Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
  • Author Name: Liang-Gee Chen
    Affiliation: Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan
    Author URL: https://ieeexplore.ieee.org/author/37087142734
    ID: 37087142734
    Order: 2
    Author Affiliations:
    • Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan

Image Sensor

• sensor_type: CMOS
• resolution: 128x96 pixels
• dynamic_range: N/A
• pixel_size: 32.2 µm
• dark_current: 0.26 fA

Optical Data

• focal_length: N/A
• aperture: N/A
• field_of_view: N/A
• distortion: N/A

Performance Metrics

• frame_rate: 30 fps
• signal_to_noise_ratio: N/A
• sensitivity: 0.2 V/lux·s
• shutter_speed: N/A
• power_consumption: 56 mW
• noise: 8 mV RMS (1% of saturation level)

Applications & Benefits

• cell_imaging: The sensor has applications in video compression, motion detection, and moving object segmentation systems.
• benefits: The chip can capture high-quality images and effectively suppress fixed-pattern noise.

Supporting Organizations

• supported_by: N/A

Manuscript Details

• publication_date: Oct. 1999

Relevancy Score

• score: 10

Processed JSON Filename

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