Ranging device and ranging method
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United States of America Patent
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Sep 3, 2024
Grant Date -
Nov 5, 2020
app pub date -
Oct 18, 2019
filing date -
Dec 3, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
Ranging devices are disclosed. In one example, a ranging device includes a control register that holds a pixel mode. A pixel array includes light receiving units each detecting the incidence of photons. A reading circuit reads detection signals from each light receiving element with a sampling period. A pixel value generating circuit tallies, in units of pixels, the number of detection signals read from each light receiving element, and generates, for each sampling period, the pixel value of each pixel. A memory stores, for each pixel, a histogram of the pixel values in each sampling period. In a first pixel mode, an area having a first size in the memory is allotted to each pixel. In a second pixel mode, an area having a different, second size in the memory is allotted to each pixel.
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