BRPI0815027A2 - Método para computar correntes de acionamento para uma pluralidade de leds em um pixel de um letreiro para obter uma cor desejada em uma intensidade luminosa desejada - Google Patents
Método para computar correntes de acionamento para uma pluralidade de leds em um pixel de um letreiro para obter uma cor desejada em uma intensidade luminosa desejadaInfo
- Publication number
- BRPI0815027A2 BRPI0815027A2 BRPI0815027-3A BRPI0815027A BRPI0815027A2 BR PI0815027 A2 BRPI0815027 A2 BR PI0815027A2 BR PI0815027 A BRPI0815027 A BR PI0815027A BR PI0815027 A2 BRPI0815027 A2 BR PI0815027A2
- Authority
- BR
- Brazil
- Prior art keywords
- leds
- light intensity
- drive currents
- desired color
- sign pixel
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
- G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
- G09G3/14—Semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
- G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0693—Calibration of display systems
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/10—Dealing with defective pixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen
- G09G2360/147—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
- G09G2360/148—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel the light being detected by light detection means within each pixel
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/836,125 | 2007-08-08 | ||
US11/836,125 US9779644B2 (en) | 2007-08-08 | 2007-08-08 | Method for computing drive currents for a plurality of LEDs in a pixel of a signboard to achieve a desired color at a desired luminous intensity |
PCT/US2008/072282 WO2009021002A1 (en) | 2007-08-08 | 2008-08-06 | Method for computing drive currents for a plurality of leds in a pixel of a signboard to achieve a desired color at a desired luminous intensity |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0815027A2 true BRPI0815027A2 (pt) | 2015-06-16 |
BRPI0815027B1 BRPI0815027B1 (pt) | 2021-01-19 |
Family
ID=39739662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0815027-3A BRPI0815027B1 (pt) | 2007-08-08 | 2008-08-06 | método para calcular correntes de acionamento para uma pluralidade de leds em um pixel de um letreiro para obter uma cor desejada em uma intensidade de luminosidade desejada |
Country Status (6)
Country | Link |
---|---|
US (1) | US9779644B2 (pt) |
EP (1) | EP2181443B1 (pt) |
CN (1) | CN101816029B (pt) |
BR (1) | BRPI0815027B1 (pt) |
ES (1) | ES2490142T3 (pt) |
WO (1) | WO2009021002A1 (pt) |
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-
2007
- 2007-08-08 US US11/836,125 patent/US9779644B2/en active Active
-
2008
- 2008-08-06 ES ES08782632.7T patent/ES2490142T3/es active Active
- 2008-08-06 WO PCT/US2008/072282 patent/WO2009021002A1/en active Application Filing
- 2008-08-06 BR BRPI0815027-3A patent/BRPI0815027B1/pt active IP Right Grant
- 2008-08-06 EP EP08782632.7A patent/EP2181443B1/en active Active
- 2008-08-06 CN CN2008801018221A patent/CN101816029B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN101816029A (zh) | 2010-08-25 |
US9779644B2 (en) | 2017-10-03 |
CN101816029B (zh) | 2013-01-30 |
BRPI0815027B1 (pt) | 2021-01-19 |
EP2181443B1 (en) | 2014-05-07 |
EP2181443A1 (en) | 2010-05-05 |
ES2490142T3 (es) | 2014-09-03 |
WO2009021002A1 (en) | 2009-02-12 |
US20090040154A1 (en) | 2009-02-12 |
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