Readout circuit design of the retina-like CMOS image sensor

Fengmei Cao; Shengyu Song; Tingzhu Bai; Nan Cao

doi:10.1117/12.2075962

19 February 2015 Readout circuit design of the retina-like CMOS image sensor

Fengmei Cao, Shengyu Song, Tingzhu Bai, Nan Cao

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94491D (2015) https://doi.org/10.1117/12.2075962
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

Readout circuit is designed for a special retina-like CMOS image sensor. To realize the pixels timing drive and readout of the sensor, the Altera's Cyclone II FPGA is used as a control chip. The voltage of the sensor is supported by a voltage chip initialized by SPI with AVR MCU system. The analog image signal outputted by the sensor is converted to digital image data by 12-bits A/D converter ADS807 and the digital data is memorized in the SRAM. Using the Camera-link image grabber, the data stored in SRAM is transformed to image shown on PC. Experimental results show the circuit works well on retina-like CMOS timing drive and image readout and images can be displayed properly on the PC.

Citation Download Citation

Fengmei Cao, Shengyu Song, Tingzhu Bai, and Nan Cao "Readout circuit design of the retina-like CMOS image sensor", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94491D (19 February 2015); https://doi.org/10.1117/12.2075962

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