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1. (WO2019049358) LED DISPLAY SYSTEM AND LED DISPLAY DEVICE
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Pub. No.: WO/2019/049358 International Application No.: PCT/JP2017/032640
Publication Date: 14.03.2019 International Filing Date: 11.09.2017
IPC:
G09G 3/32 (2016.01) ,G09F 9/33 (2006.01) ,G09G 3/20 (2006.01) ,H01L 33/00 (2010.01)
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
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
22
using controlled light sources
30
using electroluminescent panels
32
semiconductive, e.g. diodes
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
F
DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
9
Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
30
in which the desired character or characters are formed by combining individual elements
33
being semiconductor devices, e.g. diodes
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
G
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3
Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20
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
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
L
SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33
Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
Applicants:
三菱電機株式会社 MITSUBISHI ELECTRIC CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目7番3号 7-3, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008310, JP
Inventors:
澤田 清史 SAWADA Kiyoshi; JP
浅村 吉範 ASAMURA Yoshinori; JP
Agent:
吉竹 英俊 YOSHITAKE Hidetoshi; JP
有田 貴弘 ARITA Takahiro; JP
Priority Data:
Title (EN) LED DISPLAY SYSTEM AND LED DISPLAY DEVICE
(FR) PANNEAU D'AFFICHAGE À DEL, ET DISPOSITIF D'AFFICHAGE À DEL
(JA) LED表示システムおよびLED表示装置
Abstract:
(EN) The purpose of the present invention is to provide a technology with which, in an LED display system comprising multiple control devices and comprising LED display devices that display videos on the basis of video signals distributed from the multiple control devices, the control devices perform power-saving control in a synchronized manner so that power consumption of the multiple LED display devices can be suppressed. Control devices 200 each include an average luminance calculation unit 24, a signal line, an average luminance value communication unit 31, a correction coefficient calculation unit 25, and a video signal distribution unit 14. The average luminance calculation unit 24 calculates the average luminance value Yave of pixels composing a frame, and generates a READY signal. The average luminance value communication unit 31 outputs the average luminance value to the signal line after detecting that the calculation of the average luminance value has been completed in all the control devices (200a, 200b, 200c, 200d). The correction coefficient calculation unit 25 calculates a common luminance correction coefficient Cy on the basis of the average luminance value Yave. The video signal distribution unit 14 distributes a video signal and the common luminance correction coefficient Cy to a unit-LED unit 100.
(FR) La présente invention vise à fournir une technologie avec laquelle, dans un système d'affichage à DEL comprenant une pluralité de dispositifs de commande et comprenant des dispositifs d'affichage à DEL qui affichent des vidéos sur la base de signaux vidéo distribués à partir de la pluralité de dispositifs de commande, les dispositifs de commande exécutent une commande d'économie d'énergie de manière synchronisée de telle sorte que la consommation d'énergie de la pluralité de dispositifs d'affichage à DEL peut être supprimée. Les dispositifs de commande 200 comprennent chacun une unité de calcul de luminance moyenne 24, une ligne de signal, une unité de communication de valeur de luminance moyenne 31, une unité de calcul de coefficient de correction 25, et une unité de distribution de signal vidéo 14. L'unité de calcul de luminance moyenne 24 calcule la valeur de luminance moyenne Yave de pixels composant une trame, et génère un signal READY. L'unité de communication de valeur de luminance moyenne 31 délivre en sortie la valeur de luminance moyenne à la ligne de signal après avoir détecté que le calcul de la valeur de luminance moyenne a été accompli dans tous les dispositifs de commande (200a, 200b, 200c, 200d). L'unité de calcul de coefficient de correction 25 calcule un coefficient de correction de luminance commun Cy sur la base de la valeur de luminance moyenne Yave. L'unité de distribution de signal vidéo 14 distribue un signal vidéo et le coefficient de correction de luminance commun Cy à une unité de DEL unitaire 100.
(JA) 複数の制御装置と、複数の制御装置から配信される映像信号に基づいて映像を表示するLED表示装置とを備えるLED表示システムにおいて、各制御装置による省電力制御を同期させて複数のLED表示装置の消費電力を抑制可能な技術を提供することを目的とする。各制御装置200は、平均輝度算出部24と信号線と平均輝度値通信部31と補正係数算出部25と映像信号配信部14とを備える。平均輝度算出部24は、フレームを構成する画素の平均輝度値Yaveを算出し、READY信号を生成する。平均輝度値通信部31は、全ての制御装置(200a,200b,200c,200d)の平均輝度値の算出完了を検出後、平均輝度値を信号線に出力する。補正係数算出部25は、平均輝度値Yaveに基づいて共通の輝度補正係数Cyを算出する。映像信号配信部14は、映像信号と共通の輝度補正係数Cyとを単位LEDユニット100に配信する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)