Sony sandwiches DRAM into image sensors for better captures
by from Techreport on (#2BZ8B)
Stacking layers of silicon is all the rage these days, and Sony is getting in on the party with a new image sensor for smartphones at the ISSCC conference. The company is using 3D fabrication to layer a 125MB DRAM cache in between a conventional backside-illuminated image sensor and the accompanying processing circuitry. That DRAM buffer solves some annoying problems with smartphone image capture and lets the sensor capture more frames per second of slow-motion video.
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