Method and apparatus for signal conditioning of burst signal
US-2024113790-A1 · Apr 4, 2024 · US
Passive optical network system, optical line terminal, and optical network unit
US8948595B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8948595-B2 |
| Application number | US-201213684484-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 23, 2012 |
| Priority date | Dec 7, 2011 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
Official abstract text for this publication.
An optical line terminal includes the transmission rate control table for storing a minimum bandwidth for an emergency status for each of optical network units in addition to a maximum assigned bandwidth in a normal status. When a decrease in a supply power is detected, the optical line terminal calculates a transmission clock rate providing a minimum bandwidth required by each optical network unit with reference to the transmission rate control table. The optical line terminal determines change timing of downstream and upstream transmission clock rates, and change timing of upstream data for time-division multiplexing to instruct each of the optical network units. Both the optical line terminal and the optical network unit change the transmission clock rates with substantial synchronization therebetween.
First claim
Opening claim text (preview).
The invention claimed is: 1. A passive optical network system comprising: an optical line terminal; and a plurality of optical network units connected to the optical line terminal, wherein at least one of the optical network units comprises: a detecting unit configured to detect a decrease in a supply power to the optical network unit and inform the optical line terminal of the decrease in the supply power when the detecting unit detects the decrease, a transmission control…
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Classifications
Electricity · mapped topic
- H04B10/272Primary
Electricity · mapped topic
Electricity · mapped topic
- H04B10/27Primary
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8948595B2 cover?
- An optical line terminal includes the transmission rate control table for storing a minimum bandwidth for an emergency status for each of optical network units in addition to a maximum assigned bandwidth in a normal status. When a decrease in a supply power is detected, the optical line terminal calculates a transmission clock rate providing a minimum bandwidth required by each optical network …
- Who is the assignee on this patent?
- Hitachi Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04B10/272. 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).