Signal processing device for light receiving element and method thereof

The signal processing device detects photon events in parallel and generates histograms, which solves the problem of area increase in lidar sensors when increasing resolution, and realizes a high-resolution and miniaturized lidar sensor.

CN120559615APending Publication Date: 2025-08-29SOLIDVUE INC +1
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Patent Information

Application Number
CN202411579870.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-06-12
Filing Date
2024-11-07
Publication Date
2025-08-29

AI Technical Summary

Technical Problem

When existing lidar sensors increase pixel resolution, the TDC area and sensor size increase, resulting in the inability to achieve high resolution and miniaturization at the same time.

Method used

The photon event detection is performed in parallel by using a signal processing device, and the detection results are accumulated into multiple intervals through the histogram generation unit to generate a histogram to improve the time resolution.

Benefits of technology

While keeping the TDC area unchanged, a multi-resolution light receiving sensor is realized, which improves the resolution and detection range of the lidar sensor.

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Abstract

A signal processing apparatus for a light receiving element and a method thereof are disclosed. The signal processing apparatus includes: a signal detection unit that performs a photon event detection process on at least two light receiving elements of a pixel array in parallel; and a histogram generation unit that generates a histogram by accumulating the photon event detection results determined by the signal detection unit at each predetermined time period into a plurality of sections.
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Citation Information

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