Imaging device and signal processing circuit
JP2026111040APending Publication Date: 2026-07-03CANON KK
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CANON KK
- Filing Date
- 2024-12-23
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
Conventional imaging devices face challenges in achieving both pixel miniaturization and high frame rates due to counter saturation and noise issues from reduced bit width and increased wiring resistance.
Method used
An imaging device with a pixel that includes a light receiving unit, counter, holding unit, and switching unit, which switches and holds higher bits multiple times, allowing for miniaturized pixels and stable signal output.
Benefits of technology
The solution enables both pixel miniaturization and high frame rates by reducing counter bit width and suppressing noise through stable signal output, without decreasing the frame rate.
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Smart Images
Figure 2026111040000001_ABST
Abstract
The present invention provides an imaging device and signal processing circuit that can achieve both pixel miniaturization and a high frame rate. [Solution] The imaging device includes a pixel comprising a light receiving unit that receives light and generates a pulse signal, a counter that counts the pulse signal and holds a multi-bit count value, a holding unit capable of holding the count value, and a switching unit that switches the bit values of the count value to be held by the holding unit. The switching unit causes the holding unit to hold one or more of the higher bits of the count value multiple times. The holding unit outputs multiple higher bits.
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