PAM-4 receiver using pattern-based clock and data recovery circuitry
US-12184290-B2 · Dec 31, 2024 · US
Phase frequency detector
US8957705B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8957705-B2 |
| Application number | US-201213617233-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2012 |
| Priority date | Sep 14, 2012 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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Abstract
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Described is an apparatus comprising: a first phase frequency detector (PFD) to determine a coarse phase difference between a first clock signal and a second clock signal, the first PFD to generate a first output indicating the coarse phase difference; and a second PFD, coupled to the first PFD, to determine a fine phase difference between the first clock signal and the second clock signal, the second PFD to generate a second output indicating the fine phase difference.
First claim
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We claim: 1. An apparatus comprising: a first phase frequency detector (PFD) to determine a coarse phase difference between a first clock signal and a second clock signal, the first PFD to generate a first digital output indicating the coarse phase difference; and a second PFD to determine a fine phase difference between the first clock signal and the second clock signal, the second PFD to generate a second digital output indicating the fine phase difference; an adder, said ad…
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- What does patent US8957705B2 cover?
- Described is an apparatus comprising: a first phase frequency detector (PFD) to determine a coarse phase difference between a first clock signal and a second clock signal, the first PFD to generate a first output indicating the coarse phase difference; and a second PFD, coupled to the first PFD, to determine a fine phase difference between the first clock signal and the second clock signal, the…
- Who is the assignee on this patent?
- Jia Wenyan, Li Shenggao, Spagna Fulvio, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H03L7/087. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 17 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).