A Wireless Capsule Endoscope System With Lowpower Controlling And Processing Asic

• doi: 10.1109/TBCAS.2008.2006493
• title: A Wireless Capsule Endoscope System With Low-Power Controlling and Processing ASIC
• publisher: IEEE
• isbn:
• issn: 1940-9990
• rank: 995
• access_type: LOCKED
• content_type: Journals
• abstract: This paper presents the design of a wireless capsule endoscope system. The proposed system is mainly composed of a CMOS image sensor, a RF transceiver and a low-power controlling and processing application specific integrated circuit (ASIC). Several design challenges involving system power reduction, system miniaturization and wireless wake-up method are resolved by employing optimized system architecture, integration of an area and power efficient image compression module, a power management unit (PMU) and a novel wireless wake-up subsystem with zero standby current in the ASIC design. The ASIC has been fabricated in 0.18-mum CMOS technology with a die area of 3.4 mm * 3.3 mm. The digital baseband can work under a power supply down to 0.95 V with a power dissipation of 1.3 mW. The prototype capsule based on the ASIC and a data recorder has been developed. Test result shows that proposed system architecture with local image compression lead to an average of 45% energy reduction for transmitting an image frame.
• article_number: 4738433
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4738433
• html_url: https://ieeexplore.ieee.org/document/4738433/
• abstract_url: https://ieeexplore.ieee.org/document/4738433/
• publication_title: IEEE Transactions on Biomedical Circuits and Systems
• conference_location:
• conference_dates:
• publication_number: 4156126
• is_number: 4768995
• publication_year: 2009
• publication_date: Feb. 2009
• start_page: 11
• end_page: 22
• citing_paper_count: 125
• citing_patent_count: 3
• download_count: 2186
• insert_date: 20090106
• index_terms:
  • ieee_terms:
    • Endoscopes
    • Process control
    • Control systems
    • Application specific integrated circuits
    • Wireless sensor networks
    • Image coding
    • CMOS technology
    • CMOS image sensors
    • Radio frequency
    • Transceivers
  • author_terms:
    • Application specific integrated circuit (ASIC)
    • image compression
    • JPEG-LS
    • low power
    • power management unit
    • wake-up
    • wireless capsule endoscope
  • dynamic_index_terms:
    • Endoscopic System
    • Wireless Capsule Endoscopy
    • Record Data
    • Image Sensor
    • Camera Sensor
    • Image Frames
    • CMOS Technology
    • Image Compression
    • Compression Efficiency
    • Power Consumption
    • Color Space
    • Color Components
    • Printed Circuit Board
    • Supply Voltage
    • Neighboring Pixels
    • Neighborhood Pixels
    • Image Filtering
    • High Spatial Frequency
    • Contextual Memory
    • RF Power
    • Hardware Architecture
    • Schottky Diode
    • Schottky Barrier Diodes
    • Charge Pump
    • Cyclic Redundancy Check
    • Dc Supply
    • Standby Mode
    • Pipeline Stages
    • Datapath
    • Maximum Frame Rate
    • Maximal Frame
    • Run Mode
    • Conventional Endoscopy
    • State Machine
    • Finite-state
    • Finite State Machine
• authors:
  • Author Name: Xinkai Chen
    Affiliation: Department of Electrical Engineering, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37291283500
    ID: 37291283500
    Order: 1
    Author Affiliations:
    • Department of Electrical Engineering, Tsinghua University, Beijing, China
  • Author Name: Xiaoyu Zhang
    Affiliation: Department of Electrical Engineering, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37577942400
    ID: 37577942400
    Order: 2
    Author Affiliations:
    • Department of Electrical Engineering, Tsinghua University, Beijing, China
  • Author Name: Linwei Zhang
    Affiliation: Institute of Microelectronics, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37578534800
    ID: 37578534800
    Order: 3
    Author Affiliations:
    • Institute of Microelectronics, Tsinghua University, Beijing, China
  • Author Name: Xiaowen Li
    Affiliation: Department of Electrical Engineering, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37423491800
    ID: 37423491800
    Order: 4
    Author Affiliations:
    • Department of Electrical Engineering, Tsinghua University, Beijing, China
  • Author Name: Nan Qi
    Affiliation: Department of Electrical Engineering, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37085494119
    ID: 37085494119
    Order: 5
    Author Affiliations:
    • Department of Electrical Engineering, Tsinghua University, Beijing, China
  • Author Name: Hanjun Jiang
    Affiliation: Institute of Microelectronics, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37272624600
    ID: 37272624600
    Order: 6
    Author Affiliations:
    • Institute of Microelectronics, Tsinghua University, Beijing, China
  • Author Name: Zhihua Wang
    Affiliation: Institute of Microelectronics, Tsinghua University, Beijing, China
    Author URL: https://ieeexplore.ieee.org/author/37279252700
    ID: 37279252700
    Order: 7
    Author Affiliations:
    • Institute of Microelectronics, Tsinghua University, Beijing, China

Image Sensor

• sensor_type: CMOS
• resolution: VGA
• dynamic_range: not stated
• pixel_size: not stated
• dark_current: <10 uA in standby mode

Optical Data

• focal_length: not stated
• aperture: not stated
• field_of_view: not stated
• distortion: not stated

Performance Metrics

• frame_rate: 30 fps
• signal_to_noise_ratio: not stated
• sensitivity: not stated
• shutter_speed: not stated
• power_consumption: 40 mW in active mode, <10 uA in standby mode
• noise: not stated

Applications & Benefits

• cell_imaging: Used for visual examination of the digestive tract in capsule endoscopy.
• benefits: Provides wireless transmission of images, enabling non-invasive procedures.

Supporting Organizations

• supported_by: Tsinghua University, National Natural Science Foundation of China

Manuscript Details

• publication_date: Feb. 2009

Relevancy Score

• score: 9
• missing_fields:
  • fill factor
  • quantum efficiency
  • readout speed
  • temporal noise
  • fixed-pattern noise
  • analog-to-digital conversion techniques
  • microlenses
  • on-chip colour filters
  • global or rolling shutters
  • backside illumination

Processed JSON Filename

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