Title :
Smart-Pixel Array for Imaging Sensors
Author :
Fernandes, A. ; Rocha, J.G. ; Minas, G.
Author_Institution :
Univ. of Minho Campus de Azurem, Guimaraes
Abstract :
This paper describes a CMOS smart-pixel array for applications in microchip size imaging sensor with pixel-level analog to digital conversion. This on-chip conversion is performed using a one-bit first-order sigma-delta converter for each pixel. The sensor outputs digital data in the form of bit streams containing information about the intensity of the incident light. The electronics circuits have been designed for occupying a very small chip area. Each pixel block consists of a photodiode and 19 mosfets. The sensor, the readout circuits and the digital interface are integrated on a single CMOS chip.
Keywords :
CMOS image sensors; analogue-digital conversion; smart pixels; CMOS chip; CMOS smart-pixel array; digital interface; electronics circuits; microchip size imaging sensor; one-bit first-order sigma-delta converter; pixel-level analog to digital conversion; Analog-digital conversion; CMOS image sensors; Delta-sigma modulation; Electronic circuits; Image sensors; Photodiodes; Sensor arrays; Sensor phenomena and characterization; Smart pixels; Streaming media;
Conference_Titel :
Electronics, Circuits and Systems, 2007. ICECS 2007. 14th IEEE International Conference on
Conference_Location :
Marrakech
Print_ISBN :
978-1-4244-1377-5
Electronic_ISBN :
978-1-4244-1378-2
DOI :
10.1109/ICECS.2007.4511013
