Column-Parallel ADC Archietctures Comparison

Japanese IEICE Transactions on Electronics publishes Shoji Kawahito paper "Column-Parallel ADCs for CMOS Image Sensors and Their FoM-Based Evaluations."

"The defined FoM are applied to surveyed data on CISs reported and the following conclusions are obtained:
- The performance of CISs should be evaluated with different metrics to high pixel-rate regions (∼> 1000MHz) from those to low or middle pixel-rate regions.
- The conventional FoM (commonly-used FoM) calculated by (noise) x (power) /(pixel-rate) is useful for observing entirely the trend of performance frontline of CISs.
- The FoM calculated by (noise)2 x (power) /(pixel-rate) which considers a model on thermal noise and digital system noise well explain the frontline technologies separately in low/middle and high pixel-rate regions.
- The FoM calculated by (noise) x (power)/ (intrascene dynamic range)/ (pixel-rate) well explains the effectiveness of the recently-reported techniques for extending dynamic range.
- The FoM calculated by (noise) x (power)/ (gray-scale range)/ (pixel-rate) is useful for evaluating the value of having high gray-scale resolution, and cyclic-based and deltasigma ADCs are on the frontline for high and low pixel-rate regions, respectively."

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Polarization Sensing in LWIR Band

KB ViTA kindly sent me an info about their latest LWIR camera that senses polarization: " It all was started with the fact KB ViTA has developed a very sensitive thermal imaging module VLM640, which had a sensitivity of at least 20 mK in 8 — 12 µm band. The sensor manufacturer turned to KB ViTA and offered an engineering sample from an experimental wafer of bolometric detectors with integrated polarization filters. For KB ViTA it was honorable but, at the same time, there was no understanding of what it is expected to ultimately obtain. The technology and the very idea of seeing the own polarization of the thermal photons of objects that surround us is absolutely new and hardly anyone has experience of processing such information. Below we will show you how the polarization in the IR spectrum looks. There were a polarizing sensor and electronics from VLM640 camera with 20 mK sensitivity. The interesting thing about the sensor is each pixel in the group of four is covered with a p...

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Infineon Demos ToF Sensor with 14um Pixels

Infineon demos its new ToF sensor for face recognition based on 14um pixels, the IRS238xC:

King Klon

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