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公开(公告)号：US12058459B2
公开(公告)日：2024-08-06
申请号：US17609438
申请日：2020-05-08
Applicant: SONY ADVANCED VISUAL SENSING AG
Inventor： Raphael Berner , Chistian Brändli
IPC: H04N25/75 , H04N25/71 , H04N25/771 , H04N25/79
CPC classification number: H04N25/75 , H04N25/745 , H04N25/771 , H04N25/79
Abstract: An NMOS-only operational transconductance amplifier (OTA) replaces the PMOS transistors with switched capacitor pseudo-resistors in the pixels of an optical sensor such as a dynamic vision sensor or event-based vision sensor. Thus, if a stacked CMOS image sensor (CIS) process is employed, then the upper wafer can be kept free from N-wells, while still having the complete OTA on the upper wafer. Thus, it is possible to have only one wafer-to-wafer connection per pixel. Moreover, by operating the switched capacitor pseudo-resistors as three terminal devices, the gain can further be increased.
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公开(公告)号：US20220264035A1
公开(公告)日：2022-08-18
申请号：US17617416
申请日：2020-06-30
Applicant: Sony Advanced Visual Sensing AG
Inventor： Raphael Berner , Marc Osswald , Massimo Zannoni
Abstract: An event based pixel sensor system employs regions of interest or regions of non-interest, which are preferably dynamic, to isolate change events and reduce data from non-interesting events.
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公开(公告)号：US20220094863A1
公开(公告)日：2022-03-24
申请号：US17541559
申请日：2021-12-03
Applicant: Sony Advanced Visual Sensing AG
Inventor： Raphael Berner , Christian Brandli , Massimo Zannoni
Abstract: An event-based vision sensor system comprises an event-based pixel array including pixels that detect light, a readout circuit for reading out events associated with light received by each pixel and with the position it occupies in the array, and a memory controller that enables writing of each event, or event-related data, associated with a certain pixel to a certain address in a memory.
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公开(公告)号：US11076114B2
公开(公告)日：2021-07-27
申请号：US16737987
申请日：2020-01-09
Applicant: Sony Advanced Visual Sensing AG
Inventor： Raphael Berner , Christian Brändli
IPC: H04N5/335 , H04N5/3745 , G01J1/46 , H04N5/355 , H04N5/374 , H04N5/341 , H04N5/378 , G06F11/00 , G06T7/20
Abstract: A dynamic vision sensor (DVS) or change detection sensor reacts to changes in light intensity and in this way monitors how a scene changes. This disclosure covers both single pixel and array architectures. The DVS may contain one pixel or 2-dimensional or 1-dimensional array of pixels. The change of intensities registered by pixels are compared, and pixel addresses where the change is positive or negative are recorded and processed. Analyzing frames based on just three values for pixels, increase, decrease or unchanged, the proposed DVS can process visual information much faster than traditional computer vision systems, which correlate multi-bit color or gray level pixel values between successive frames.
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公开(公告)号：US10923520B2
公开(公告)日：2021-02-16
申请号：US16297267
申请日：2019-03-08
Applicant: Sony Advanced Visual Sensing AG
Inventor： Raphael Berner , Christian Brändli , Massimo Zannoni
IPC: H01L27/146 , H04N5/351 , H04N5/369 , H01L29/423 , H04N5/3745
Abstract: An event-based vision sensor is fabricated using an advanced stacking technique, known as Three-Dimensional Integrated Circuit, which stacks more wafers (or dies) and interconnects them vertically. The electronic integrated circuits of the sensor are then distributed between the two or more electrically connected dies.
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Patent Agency Ranking
公开(公告)号：US12010447B2
公开(公告)日：2024-06-11
申请号：US18206634
申请日：2023-06-07
Applicant: SONY ADVANCED VISUAL SENSING AG
Inventor： Raphael Berner , Christian Brändli
IPC: H04N25/77 , G01J1/46 , G06F11/00 , G06T7/20 , H04N25/40 , H04N25/47 , H04N25/571 , H04N25/75 , H04N25/766 , H04N25/772
CPC classification number: H04N25/75 , G01J1/46 , G06F11/004 , G06T7/20 , H04N25/40 , H04N25/47 , H04N25/573 , H04N25/766 , H04N25/77 , H04N25/772 , G06F2201/86 , G06F2201/88
Abstract: A dynamic vision sensor (DVS) or change detection sensor reacts to changes in light intensity and in this way monitors how a scene changes. This disclosure covers both single pixel and array architectures. The DVS may contain one pixel or 2-dimensional or 1-dimensional array of pixels. The change of intensities registered by pixels are compared, and pixel addresses where the change is positive or negative are recorded and processed. Analyzing frames based on just three values for pixels, increase, decrease or unchanged, the proposed DVS can process visual information much faster than traditional computer vision systems, which correlate multi-bit color or gray level pixel values between successive frames.
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公开(公告)号：US20240187750A1
公开(公告)日：2024-06-06
申请号：US18442512
申请日：2024-02-15
Applicant: Sony Advanced Visual Sensing AG
Inventor： Raphael Berner , Christian Brandli , Massimo Zannoni
CPC classification number: H04N25/50 , H04N25/44 , H04N25/745 , H04N25/75 , H04N25/77 , H04N25/771 , H04N25/79
Abstract: An event-based vision sensor system comprises an event-based pixel array including pixels that detect light, a readout circuit for reading out events associated with light received by each pixel and with the position it occupies in the array, and a memory controller that enables writing of each event, or event-related data, associated with a certain pixel to a certain address in a memory.
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公开(公告)号：US11652126B2
公开(公告)日：2023-05-16
申请号：US17161961
申请日：2021-01-29
Applicant: SONY ADVANCED VISUAL SENSING AG
Inventor： Raphael Berner , Christian Brändli , Massimo Zannoni
IPC: H01L27/146 , H04N5/351 , H04N5/369 , H01L29/423 , H04N5/3745
CPC classification number: H01L27/14634 , H01L27/1469 , H01L27/14614 , H01L27/14636 , H01L29/42364 , H04N5/351 , H04N5/379 , H04N5/3745 , G06F2201/86
Abstract: An event-based vision sensor is fabricated using an advanced stacking technique, known as Three-Dimensional Integrated Circuit, which stacks more wafers (or dies) and interconnects them vertically. The electronic integrated circuits of the sensor are then distributed between the two or more electrically connected dies.
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公开(公告)号：US20220224856A1
公开(公告)日：2022-07-14
申请号：US17609439
申请日：2020-05-08
Applicant: SONY ADVANCED VISUAL SENSING AG
Inventor： Christian Brändli , Raphael Berner
IPC: H04N5/3745 , H04N5/374 , H04N5/378 , H04N5/341
Abstract: A dynamic vision sensor such as an event based vision sensor employs analog to digital converters (ADC), such as ramp ADCs, that analog to digital converts the signals from photoreceptors. Only previous light values need to be stored in the pixels. This is accomplished by generating three ramps. In addition, log compression can be implemented by increasing the count linearly while increasing the reference voltage exponentially, or increasing the count logarithmically while increasing the reference voltage linearly.
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公开(公告)号：US11336859B2
公开(公告)日：2022-05-17
申请号：US16824189
申请日：2020-03-19
Applicant: Sony Advanced Visual Sensing AG
Inventor： Raphael Berner , Christian Brändli
IPC: H04N5/378 , H04N5/3745 , H04N5/374 , H04N5/335 , H04N5/341 , G01J1/46 , G06F11/00 , G06T7/20 , H04N5/355
Abstract: In an image sensor, some pixels in an array contain a sampling circuit to sample the light intensity and a capacitor to store an analog value representing the intensity at that pixel. Alternatively, a group of pixel circuits will be equipped with such sampling and capacitor circuits. This allows simple redundancy-reducing computations with a relatively simple pixel architecture.
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