Image sensor
US-2024380999-A1 · Nov 14, 2024 · US
Imaging apparatus
US8941753B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8941753-B2 |
| Application number | US-201213592969-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 23, 2012 |
| Priority date | Sep 8, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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- Title
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Abstract
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An imaging apparatus includes: a pixel generating a photoelectric conversion signal; a comparator comparing a base signal based on the pixel at a reset state with a time-changing first reference signal, and comparing an effective signal based on the pixel at a non-reset state with a time-changing second reference signal, the second reference signal having a larger time-changing ratio than that of the second reference signal; a counter counting a first count value until an inversion of a magnitude relation between the base signal and the first reference signal, and counting a second count value until an inversion of a magnitude relation between the effective signal and the second reference signal; and a correcting unit configured to correct the difference of resolutions of the first and second count values, and configured to correct the difference between the corrected first and second count values.
First claim
Opening claim text (preview).
What is claimed is: 1. An imaging apparatus comprising: a pixel configured to generate a signal; an A/D conversion unit configured to generate a digital signal based on the signal of the pixel, the A/D conversion unit including a reference signal generating circuit, a comparator and a counter, wherein the reference signal generating circuit is configured to generate a plurality of reference signals, including a first reference signal having a first level changing ratio depending…
Assignees
Inventors
Classifications
- H04N25/616Primary
Electricity · mapped topic
Electricity · mapped topic
- H04N25/78Primary
Electricity · mapped topic
- H04N5/378Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8941753B2 cover?
- An imaging apparatus includes: a pixel generating a photoelectric conversion signal; a comparator comparing a base signal based on the pixel at a reset state with a time-changing first reference signal, and comparing an effective signal based on the pixel at a non-reset state with a time-changing second reference signal, the second reference signal having a larger time-changing ratio than that …
- Who is the assignee on this patent?
- Hashimoto Seiji, Matsuno Yasushi, Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification H04N25/616. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 27 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).