Saturday, February 24, 2024

First iToF Sensor With An Integrated Depth-Sensing ISP

By Nidhi Agarwal

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The global shutter sensor debuts for XR and robotics, offering VGA resolution, high quantum efficiency, and multi-drop support, signalling advancements in machine vision applications.

iToF sensor

Samsung Electronics has introduced ISOCELL Vizion 931, a global shutter sensor. It is the first iToF sensor with an integrated depth-sensing hardware image signal processor (ISP). Crafted for capturing swift movements without the “jello effect,” the shutter sensor is a global shutter image sensor. In contrast to rolling shutter sensors, it captures the entire scene simultaneously, eliminating distortion in images of moving objects. 

Suitable for applications like motion-tracking in XR devices, gaming systems, robots, and drones, the Vizion 931 boasts a one-to-one ratio VGA resolution (640 x 640). This makes it perfect for iris recognition, eye tracking, and facial and gesture detection in XR headsets.

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Noteworthy for achieving the industry’s highest quantum efficiency at 850nm infrared light wavelength, reaching an impressive 60%, the Vizion 931 incorporates Front Deep Trench Isolation (FDTI). This innovation places an insulation layer between pixels, maximising light absorption, coupled with the BST method from the ISOCELL Vizion 63D.

The global shutter sensor also supports multi-drop, enabling seamless connection of up to four cameras to the application processor using a single wire. This minimises wiring requirements, providing device manufacturers with enhanced design flexibility.

Some of the key specifications of the ISOCELL Vizion 931 include:

  • Effective Resolution: VGA+ (640 × 640)
  • Pixel Size: 2.2㎛
  • Optical Format: 1/9″
  • Color Filter: Monochrome / RGB
  • Shutter Type: Electronic global shutter
  • Multi-drop Connection: Output Interface
  • MIPI CSI2: Up to 4 sensors
  • ADC Accuracy: 10-bit
  • Operating Temperature: -20℃ to +85℃
  • Output Formats: RAW8, RAW10
  • Analog Gain: Up to 16x

“Engineered with state-of-the-art sensor technologies, Samsung’sSamsung’s ISOCELL Vizion 63D and ISOCELL Vizion 931 will be essential in facilitating machine vision for future high-tech applications like robotics and extended reality (XR),” said Haechang Lee, Executive Vice President of the Next Generation Sensor Development Team at Samsung Electronics. “Leveraging our rich history in technological innovation, we are committed to driving the rapidly expanding image sensor market forward.”

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