Inivation Ag

Samsung Electronics Co., Ltd.

Universitaet Zuerich

Chenghan Li

Shih-Chii Liu

Tobi Delbruck

Christian Brandli

Kynan Eng

Hongjie Liu

Pierre Giraud

Thomas Debrunner

Arnaud Defernez

Giovanni Lippolis

Andreas Georgiou

Adam Radomski

An eye tracking device including an event-based optical sensor, configured to receive radiation reflected off an eye of a user and produce a signal stream of events, each event corresponding to detection of a temporal change in the received radiation at one or more pixels of said optical sensor, and a controller, which is connected to said optical sensor and configured to: a) receive the signal stream of events from the optical sensor, b) generate an inference frame based on the stream of events, c) utilize the inference frame as input to a machine learning module and operate the machine learning module to obtain output data, and e) extract from the output data information related to the eye of the user, wherein the controller is configured to generate the inference frame utilizing a first artificial neural network.

Eye tracking device, eye tracking method, and computer-readable medium

An event sensor including a pixel array and configured to produce a signal stream comprising event data in reaction to light incident on the pixel array. The event sensor includes: for each pixel of the pixel array a photovoltaic converter and an electronic converter connected to the photovoltaic converter. The photovoltaic converter and the electronic converter are configured to produce and store a digital current pixel value, which is dependent on the intensity of light incident on the photovoltaic converter; for each pixel of the pixel array a corresponding multi-bit digital storage configured to store a previous pixel value; and a readout processor connected to the electronic converter and the multi-bit digital storage and configured to generate a pixel event value of the event data based on a pixel subtraction result of subtracting the previous pixel value from the current pixel value.

Event sensor and method for generating a signal stream comprising event data

A switched capacitor circuit, including a metal-oxide-semiconductor field-effect transistor-based switch comprising: a first metal-oxide-semiconductor field-effect transistor having a gate, a source and a drain, wherein the source is connected to a first node and the drain is connected to a second node or wherein the drain is connected to the first node and the source is connected to the second node; a second metal-oxide-semiconductor field-effect transistor having a gate, a source and a drain, wherein the source is connected to the drain and the source and the drain are together connected to the second node; a first capacitor connected between the first node and a third node; and a second capacitor connected between the second node and the third node.

Switched capacitor circuit

A photoarray for detecting time-dependent image data, comprising an array of multiple device cells, wherein each device cell comprises a group of photosensors, each photosensor configured to generate an analog sensor signal dependent on a light intensity at said photosensor, for each photosensor a pixel encoding circuit configured to transform the analog sensor signal generated by said photosensor into a digital pixel information stemming from said photosensor, and a processing unit, which comprises a correlation logic configured to correlate said pixel information stemming from the photosensors of said group of photosensors and to produce as a result a request signal indicating that said cell contains pixel information to be read and/or a pass signal utilized in the processing unit to allow pixel information contained in said cell to be transmitted.

Array of cells for detecting time-dependent image data

An image sensor for detecting time-dependent image data, comprising multiple photovoltaic converters and multiple electronic converters arranged in arrays and linked by switching elements. Each of the photovoltaic converters and one of the electronic converters form a pair that generates digital information dependent on light intensity on the photovoltaic converter. The switching elements are arranged to selectively connect at least two of the photovoltaic converters to one of the electronic converters and at least two of the electronic converters to one of the photovoltaic converters.

Image sensor and sensor device for imaging temporal and spatial contrast

A device for controlling a transfer of information from a plurality of electronic components through a communication bus to a host device, comprising a chain of processing blocks connected to the electronic components, each of the processing blocks associated with one, or a set, of the electronic components, which processing blocks are arranged such that during the transfer of information an authorization signal propagates through the chain of processing blocks and, when the authorization signal encounters a processing block associated with one of the electronic components or one of the sets of electronic components which contains an information value to be transferred, effecting the transfer of the information value through the communication bus to the host device. The processing blocks are arranged to coordinate their processing in accordance with a clock signal generated independent of a propagation status of the authorization signal within the chain of processing blocks.

Device and method for controlling a transfer of information from a plurality of electronic components through a communication bus to a host device

An event-based sensor is provided and may include a sensor configured to generate an event signal that includes identification information that relates to an active pixel that detects an event from among a plurality of sensing pixels, a determiner configured to determine whether the event signal is to be filtered based on a predetermined condition, and an outputter configured to output the event signal based on a result of the determination.

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Zurich, Switzerland

Chenghan Li