ÖĞÎÄ°æ ENGLISH
Home         |         About Us         |         Products         |         New Product          |         News         |         Feedback         |        Contact Us
Product Catalog
New Products
LED Components
LED Addressable Strip
Digital Led Matrix
Digital Led Controller
LED Strip Light
LED Digital Pixel
LED Strip Kits
LED Controllers
LED Module Light
LED Spotlight
LED Bulb Light
LED Connectors
LED Power Supplier
LED Tube,Flood light,Mining Lamp
Contact Us
Tel: 0755-36649989
Fax: 0755-36649989
E-mail£ºinfo@gree-leds.com
sales@gree-leds.com
Address: 2F,1 building, Logistics Park, Shiyan Town, Bao'an District, Shenzhen, China
Your location£ºHOME >> News
 
The Refresh frequency algorithm
2014/4/22  

1. A general chips,such as : WS2811 \ WS2801 which are the 256 gray levels, 
 a pixel is ( R \ G \ B ) composed of the three primary colors. R\ G\ B  each take on 256 gray levels.

2.Computer adopt two binary algorithm. 2 to the power of 8 equal 256. ( R \ G \ B ) each take on 8bits. then sending 24bits as a complete chip data in the computer.

3 Computer takes 2.5 us for sending 1 bit data. ( 1s = 1000ms = 1000000us. )

4.Calculating base on 512Pixel, Refresh frequency=1000000 / ( 512Pixel * 2.5us * 24bit  ) = 32.55 frame rate / S.The computer's frame rate is 26 per second frame rate / S. So the controller frame rate must exceed the PC frame rate to synchronize the controller's frame rate with the computer's

5 because of the erroring  when the transfer data between controller and chip ,but it is difficult to reach the theoretical value 32.55 frame rate / S, therefore the real frame rate will be about 28 frame rate / S  to 30 frame rate / S.That's why we advice customers each controller port drive 512pixel when they make screen project.
         
                                                                                                               News Centre Of 
                                                                                    Greeled Electronic  Ltd
                                                                                         23th-April,2014

¡¾Print¡¿¡¾Close¡¿   
Copyright © 2011-2012 Greeled Electronic Ltd. All Rights Reserved ÔÁICP±¸111107-1ºÅ