Title :
A wireless narrow-band imaging chip for capsule endoscope
Author :
Dung, Lan-Rong ; Wu, Yin-Yi ; Weng, Ping-Kuo
Author_Institution :
Dept. of Electr. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
NBI endoscope has been shown to be a superior diagnostic tool for early stage lesion detection, equally wireless capsule endoscope has been proven a effective means of gastrointestinal tract diagnosis. In this paper, we present the first narrow band imaging wireless capsule endoscope. The dedicated dual-mode COMS sensor can offer both white light and narrow band images. Implementation results show that the designated 512- by-512 CMOS sensor consumes only 2 mA at 3 V power supply. The average current of the NBI capsule with a 8 Mbps RF transmitter is nearly 7 mA that can work for 6 to 8 hours with two 1.5 V 80 mA button batteries while the frame rate is 2 fps.
Keywords :
CMOS image sensors; biomedical communication; biomedical optical imaging; endoscopes; patient diagnosis; wireless sensor networks; RF transmitter; capsule endoscope; current 2 mA; dedicated dual-mode CMOS sensor; early stage lesion detection; gastrointestinal tract diagnosis; voltage 3 V; wireless narrow-band imaging chip; CMOS image sensors; Endoscopes; Gastrointestinal tract; Image sensors; Lesions; Narrowband; Power supplies; Radio frequency; Transmitters; Wireless sensor networks;
Conference_Titel :
Biomedical Circuits and Systems Conference, 2009. BioCAS 2009. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4917-0
Electronic_ISBN :
978-1-4244-4918-7
DOI :
10.1109/BIOCAS.2009.5372044
