Sony have some dynamic vision sensor related patents:
https://patentscope.wipo.int/search/en/detail.jsf?docId=US331227161US20210227194 - DYNAMIC VISION SENSOR AND PROJECTOR FOR DEPTH IMAGINGAbstractSystems, devices, and techniques related to matching features between a dynamic vision sensor and one or both of a dynamic projector or another dynamic vision sensor are discussed. Such techniques include casting a light pattern with projected features having differing temporal characteristics onto a scene and determining the correspondence(s) based on matching changes in detected luminance and temporal characteristics of the projected features.
https://patentscope.wipo.int/search/en/detail.jsf?docId=EP334741384EP3869791 - DATA RATE CONTROL FOR EVENT-BASED VISION SENSORAbstract
In dynamic vision sensor (DVS) or change detection sensors, the chip or sensor is configured to control or modulate the event rate. For example, this control can be used to keep the event rate close to a desired rate or within desired bounds. Adapting the configuration of the sensor to the scene by changing the ON-event and/or the OFF-event thresholds, allows having necessary amount of data, but not much more than necessary, such that the overall system gets as much information about its state as possible.
"The variable amount of change events to be read out from the sensor can pose problems on the sensor and at the system level, especially if there are more events to be read out than what the processor can process in real-time. "
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samsunghttps://patentscope.wipo.int/search/en/detail.jsf?docId=EP318511029EP3782362 - SEMANTIC MAPPING FOR LOW-POWER AUGMENTED REALITY USING DYNAMIC VISION SENSORAbstract An apparatus includes a dynamic vision sensor (DVS) configured to output an asynchronous stream of sensor event data, a CMOS image sensor configured to output frames of image data, an inertial measurement unit (IMU), a processor and a memory. The memory contains instructions, which when executed by the processor, cause the apparatus to generate a semantic segmentation of a time-stamped frame, which is based on one or more of an output of the CMOS image sensor, or a synthesized event frame based on an output from the DVS and an output from the IMU over a time interval. The semantic segmentation includes a semantic label associated with a region of the time-stamped frame. When executed, the instructions further cause the apparatus to determine, based on the semantic segmentation, a simplified object representation in a coordinate space, and update a stable semantic map based on the simplified object representation.
---I've been watching Samsung and Sony's DVS patents closely since I found out Apples VR/AR patents specify dynamic vision sensors and neuromorphic circuitry.
Obviously, the technology Sony is using, having teamed up with Prophesee, is linked to the JAST learning rules through Bernabe LINARES-BARRANCO:
https://hotcopper.com.au/threads/all-roads-lead-to-jast.5683524/eg
https://www.prophesee.ai/2020/02/19/prophesee-sony-stacked-event-based-vision-sensor/
Prophesee and Sony Develop a Stacked Event-Based Vision Sensor with the Industry’s Smallest*1 Pixels and Highest*1 HDR Performance
(20min delay)