Detection of an led module
US-2015373811-A1 · Dec 24, 2015 · US
Over-voltage and over-current protection circuits and electronic devices
US9504117B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9504117-B2 |
| Application number | US-201414647110-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 16, 2014 |
| Priority date | Dec 17, 2013 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention provides an over-voltage and over-current protection circuit ( 30 ), including an over-voltage detection unit ( 31 ) to generate an over-voltage detection voltage, an over-current detection unit ( 32 ) to generate an over-current detection voltage, a LED driving unit ( 33 ) being connected with the over-voltage detection unit and the over-current detection unit to converter a reference voltage into an over-voltage reference voltage and an over-current reference voltage being proportional to the reference voltage, a reference voltage adjusting unit ( 34 ) and a control unit ( 35 ). The control unit ( 35 ) outputs a boost control signal with a high level when it judges that change range of the working voltage of the LED module ( 20 ) exceeds a predetermined value according to a LED characteristic data curve. The present invention provides an electronic device ( 1 ), the over-voltage or over-current protection threshold could be increased along with increasing the working time of the electronic device ( 1 ).
First claim
Opening claim text (preview).
What is claimed is: 1. An over-voltage and over-current protection circuit being used for a LED module of an electronic device which being supplied by a power source, the LED module comprising a positive input and the power source comprising an output, wherein the over-voltage and over-current protection circuit comprise: an over-voltage detection unit being connected between the positive input end and ground to detect the voltage of the positive input of the LED module to generat…
Assignees
Inventors
Classifications
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9504117B2 cover?
- The present invention provides an over-voltage and over-current protection circuit ( 30 ), including an over-voltage detection unit ( 31 ) to generate an over-voltage detection voltage, an over-current detection unit ( 32 ) to generate an over-current detection voltage, a LED driving unit ( 33 ) being connected with the over-voltage detection unit and the over-current detection unit to converte…
- Who is the assignee on this patent?
- Shenzhen China Star Optoelect
- What technology area does this patent fall under?
- Primary CPC classification H05B33/0884. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 22 2016 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).