Image sensor, image-capturing apparatus, and electronic device
US-12185003-B2 · Dec 31, 2024 · US
Analog-to-digital converter, photoelectric conversion device, and imaging system
US8994866B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8994866-B2 |
| Application number | US-201213612402-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 12, 2012 |
| Priority date | Oct 7, 2011 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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A photoelectric conversion device includes a counter circuit configured to count a first clock signal to output a count signal thereof, a second clock signal generation unit configured to generate a second clock signal based on the first clock signal, and a clock synchronization unit configured to output a count start signal in synchronization with the second clock signal, wherein the counter circuit performs a counting operation in response to the count start signal synchronized with the second clock signal.
First claim
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What is claimed is: 1. A photoelectric conversion device comprising a pixel array including a plurality of columns of pixels, a signal processing unit, and a plurality of analog-to-digital converters, each including a comparator for comparing a reference signal with an analog signal and a storage unit, the photoelectric conversion device further comprising: a reference signal supply unit configured to supply the reference signal, which varies with time, to each comparator of the p…
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Frequently asked questions
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- What does patent US8994866B2 cover?
- A photoelectric conversion device includes a counter circuit configured to count a first clock signal to output a count signal thereof, a second clock signal generation unit configured to generate a second clock signal based on the first clock signal, and a clock synchronization unit configured to output a count start signal in synchronization with the second clock signal, wherein the counter c…
- Who is the assignee on this patent?
- Nakamura Kohichi, Hiyama Hiroki, Itano Tetsuya, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification H04N25/75. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 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).