Method and apparatus for reconfigurable clock data recovery in fading environments
US-2024146500-A1 · May 2, 2024 · US
Node equipment
US8948588B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8948588-B2 |
| Application number | US-201113521354-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2011 |
| Priority date | Apr 22, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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Node equipment 1 , having optical attenuator unit 21 for optically attenuating wavelength division multiplexing signals received and optical multiplexer/demultiplexer unit 5 for performing optical multiplexing/demultiplexing of the wavelength division multiplexing signals received from the optical attenuator unit 21 via an optical cord 11 , includes: output level detecting unit 24 for detecting the optical power level of the wavelength division multiplexing signals at a pre-stage of the optical cord 11 ; input level detecting unit 52 for detecting the optical power level of the wavelength division multiplexing signals at a post-stage of the optical cord 11 ; deciding unit 25 for deciding abnormality of the optical power level loss through the optical cord 11 from the optical power levels detected by the output level detecting unit 24 and input level detecting unit 52 ; and control unit 26 for controlling the optical attenuation of the optical attenuator unit 21 according to the abnormality decision result by the deciding unit 25.
First claim
Opening claim text (preview).
What is claimed is: 1. Node equipment including an optical attenuator that optically attenuates received wavelength division multiplexing signals, and an optical multiplexer/demultiplexer that carries out optical multiplexing/demultiplexing of the wavelength division multiplexing signals received from the optical attenuator via an optical cord, the node equipment comprising: an output level detector that detects an optical power level of the wavelength division multiplexing signal…
Assignees
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Classifications
- H04B10/07955Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H04J14/0221Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8948588B2 cover?
- Node equipment 1 , having optical attenuator unit 21 for optically attenuating wavelength division multiplexing signals received and optical multiplexer/demultiplexer unit 5 for performing optical multiplexing/demultiplexing of the wavelength division multiplexing signals received from the optical attenuator unit 21 via an optical cord 11 , includes: output level detecting unit 24 for…
- Who is the assignee on this patent?
- Sueoka Hideki, Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification H04B10/07955. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 03 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).