Sequential Linear LED System With Low Output Ripple
US-2015382414-A1 · Dec 31, 2015 · US
LED dimmer, LED lighting device comprising same, and method for controlling dimming of LED lighting device
US9220143B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9220143-B2 |
| Application number | US-201314397472-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 25, 2013 |
| Priority date | Apr 25, 2012 |
| Publication date | Dec 22, 2015 |
| Grant date | Dec 22, 2015 |
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Abstract
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A light-emitting diode (LED) dimmer for an LED lighting device, including a power switch, a drive voltage supply, and a LED light-emitting unit. Operating zones of the LED lighting device are changed in accordance with the switching of the power switch, and a dimming level for a next operating zone is determined on the basis of the dimming level and time while the power switch was on during the previous operating period.
First claim
Opening claim text (preview).
The invention claimed is: 1. A light-emitting diode (LED) dimmer for an LED lighting device, comprising: a power switch; a drive voltage supply; and an LED light-emitting unit, wherein, when operating zones of the LED lighting device are changed due to switching the power switch; the LED dimmer is configured to select a first dimming level of (k+1) th operating zone after switching the power switch, k being a positive integer; the first dimming level being different tha…
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Classifications
Electricity · mapped topic
- H05B45/395Primary
Electricity · mapped topic
- H05B33/0845Primary
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
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- What does patent US9220143B2 cover?
- A light-emitting diode (LED) dimmer for an LED lighting device, including a power switch, a drive voltage supply, and a LED light-emitting unit. Operating zones of the LED lighting device are changed in accordance with the switching of the power switch, and a dimming level for a next operating zone is determined on the basis of the dimming level and time while the power switch was on during the…
- Who is the assignee on this patent?
- Seoul Semiconductor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H05B45/395. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 22 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).