Title:
LED ELECTRONIC DISPLAY BOARD SYSTEM WITH CURRENT CONTROL FOR PREVENTING REDUCING DISPLAY QUALITY
Document Type and Number:
WIPO Patent Application WO/2021/091129
Kind Code:
A1
Abstract:
The LED electronic display board system according to the present invention comprises first to Mth sub-controllers 2-1, 2-2,..., 2-M (here, N and M are a natural number), each of which comprises first to Nth LED modules 1-1, 1-2,..., 1-N, to control the first to Nth LED modules 1-1, 1-2,..., 1-N; and a main controller 3 which is connected to the first to Mth sub-controllers 2-1, 2-2,..., 2-M to control the first to Mth sub-controllers 2-1, 2-2,..., 2-M, wherein the first to Mth sub-controllers 2-1, 2-2,..., 2-M each further comprise a constant current roller 20 and a variable resistance block 21, and the constant current controller 20 adjusts a resistance value of the variable resistance block 21 according to a signal of the main controller 3 to adjust the size of current.
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Inventors:
LEE JEONG JAE (KR)
LEE JEONG YONG (KR)
LEE JEONG YONG (KR)
Application Number:
PCT/KR2020/014524
Publication Date:
May 14, 2021
Filing Date:
October 22, 2020
Export Citation:
Assignee:
ASONE CO LTD (KR)
International Classes:
G09G3/14; G09F9/33; G09G3/32
Foreign References:
| KR20100040486A | 2010-04-20 | |||
| KR100896413B1 | 2009-05-08 | |||
| KR20090040704A | 2009-04-27 | |||
| KR101028529B1 | 2011-04-11 | |||
| US20110089824A1 | 2011-04-21 | |||
| KR102105798B1 | 2020-04-28 |
Attorney, Agent or Firm:
LEE, Sung Rok (KR)
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