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SonyGranted patentCameras & imagingInterest 4/10

Sony patents method to detect shapes in data from event cameras

Sony has been granted a patent for a circuit that processes data from event-based vision sensors, which record changes in brightness rather than full images. The system divides the camera's view into small blocks and analyzes the timing and position of these changes to identify specific shapes or lines within each block.

Why it mattersThis technology could help cameras in devices like robots or cars detect movement and shapes more efficiently by focusing only on what changes in the scene.

In the filing’s own words

There is provided a signal processing circuit that processes an event signal generated in an EVS. The signal processing circuit includes a memory for storing a program code and a processor for executing operation in accordance with the program code. The operation includes detecting the relation among at least either positions in a block obtained by dividing a detection region of the EVS regarding the event signals generated in the block or the clock times at which the event signals have been generated.

What exactly they claim (claim 1)

1. A signal processing circuit comprising: a memory for storing a program code; and a processor for executing operations in accordance with the program code, wherein the operations include: processing one or more event signals generated in an event-based vision sensor; dividing a detection region of the event-based vision sensor into a plurality of blocks; distributing the one or more event signals generated in a block among the plurality of blocks to a block event buffer corresponding to the block; detecting, by a detector, a figure including a set of positions of the one or more event signals in the block event buffer; and outputting, from the detector, a block line parameter indicating the detected figure as a relation among the set of positions in the block event buffer.

Facts

Company
Sony (Sony Interactive Entertainment Inc.)
Official title
Signal processing circuit, signal processing method, and program for processing event signals of event-based vision sensor
Patent number
US12750599B2
Application number
18855384
Filed
Apr 27, 2022
Granted
Sep 29, 2026
Inventors
2
Claims
20

Classified under

H04N 25/47 Electricity & electronicsH04N 25/707 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.