JPS6145281A - Brightness corrector for large screen video apparatus - Google Patents
Brightness corrector for large screen video apparatusInfo
- Publication number
- JPS6145281A JPS6145281A JP16652384A JP16652384A JPS6145281A JP S6145281 A JPS6145281 A JP S6145281A JP 16652384 A JP16652384 A JP 16652384A JP 16652384 A JP16652384 A JP 16652384A JP S6145281 A JPS6145281 A JP S6145281A
- Authority
- JP
- Japan
- Prior art keywords
- brightness
- correction
- light emitting
- large screen
- screen video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Transforming Electric Information Into Light Information (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は大画面映像装置用輝度補正装置に関する。本発
明による輝度補正装置は例えば競技場、野球場等におい
て記録等を表示する大画面映像装置Ｏ輝度補正に用いら
れる。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a brightness correction device for a large screen video device. The brightness correction device according to the present invention is used to correct the brightness of a large screen video device O for displaying records, etc., in stadiums, baseball stadiums, etc., for example.
従来、大画面映像装置の輝度補正あるいは輝度制御には
種々の方式が用いられている。例えば、マトリックス表
示板０輝度を各絵素に印加される駆動／４ルスＯ−９ル
ス振幅と輝度制御・々ルスの・ぐルス幅との組合せくよ
多制御する方式（特公昭５６−４０３５８）、あるいは
選択駆動される一方Ｏ軸に振幅および・９ルス幅が一定
な駆動・々ルスを印加し、これに対応する他方の軸に振
幅を一定にし輝度レベルにより・譬ルス幅が異なる駆動
・マルスを印加する方式等である。さらにマトリックス
形表示−４ネルの発光素子を画像メモリ、輝度メモリ、
カラ／り、コンーヤレータ等を用いて・ｆルス時間＠０
変化で点灯時間を変えることにより輝度８Ｉ！４整する
方式（特願昭５８−１０２８３２）が提案されている。Conventionally, various methods have been used for brightness correction or brightness control of large screen video devices. For example, a method (Japanese Patent Publication No. 56-40358 ), or apply a drive pulse with a constant amplitude and pulse width to one O-axis that is selectively driven, and a drive with a constant amplitude and pulse width to the corresponding other axis and a pulse width that varies depending on the brightness level. - A method of applying Mars, etc. In addition, matrix type display - 4 channels of light emitting elements are used as image memory, brightness memory,
Using color/liquid, conveyor, etc. ・f Lux time @ 0
Brightness 8I by changing the lighting time! A method of arranging the number of 4 times has been proposed (Japanese Patent Application No. 58-102832).
上記の方式にあっては、発光素子の輝度階調制御を駆動
−９ルスあるいは輝度制御・臂ルスの・母ルス振幅およ
び・母ルス幅を変化させることにより制御している。し
かしながら、発光素子自体にバラツキがある几めにこＯ
ようなｄルス振幅および・臂ルス幅の制御を行っても一
様な輝度制御を行うことは困難であり、そのため対策と
して表示装置に発光素子を取付ける前に個々に輝度につ
いて検査選別し、規格外を予め使用しないようＫするほ
か設置後に明暗Ｏ著しい素子については保守点検Ｏ際交
換するなどを行っているが、検査選別品であっても経時
変化による劣化がｂカ、さらに保守点検では人的手段に
頼シかつ多大の時間を必要とするなど問題が多かり几・
〔問題点を解決するための手段〕
本発明は上記の問題点を解消し次大画面映像装置用ｆ４
度補正装置であって、発光素子の輝度を・ぐルス時間幅
により制御する場合、特に・やルス時間幅と輝度との間
に経時変化などによりて比例関係が存在しない場合に、
基準発光素子と実使用発光素子と０間の基準入力に基づ
く輝度の差を素子補正メモリーに記憶し実際点灯Ｏ際輝
度補正することができる輝度補正装置を提供するもＯで
、その手段は、少なくとも輝度試験入出力装置を有する
大画面映像装置用の輝度補正装置において、該輝度補正
装置が、該大画面映像装置の発光素子の輝度を検出する
輝度センサーと、該譚度セッサーＯアナｑグ出力をデジ
タル出力に変換するアナログ・デノタル変換器と、該輝
度試験入出力装置から発生されるイニシャル輝度データ
により点灯された基準発光素子の輝度データを一時記憶
し、該輝度データと該イニシャル輝度データにより点灯
され７を実使用発光素子Ｏ輝度データとを比較し差値を
算出する比較・補正回路と、該比較・補正回路により得
られた該差値を記憶する素子補正メモリと、該素子補正
メモリと同一〇内容を記憶する不揮発性記憶媒体とを具
備することを特徴とする。In the above method, the luminance gradation control of the light emitting element is controlled by changing the base pulse amplitude and base pulse width of the driving pulse or the luminance control arm pulse. However, due to variations in the light emitting elements themselves,
It is difficult to achieve uniform brightness control even if the d-lux amplitude and arm-lux width are controlled, so as a countermeasure, each light-emitting element is inspected and sorted for brightness before it is installed in a display device, and the standard In addition to preventing the outside from being used in advance, we also replace elements that are markedly bright or dark after installation during maintenance inspections, but even inspected and selected products deteriorate over time, and furthermore, maintenance inspections require human intervention. [Means for Solving the Problems] The present invention solves the above problems and provides an F4 for the next large screen video device.
When the brightness of a light emitting element is controlled by a pulse time width, especially when there is no proportional relationship between the pulse time width and the brightness due to changes over time, etc.
To provide a brightness correction device capable of storing a difference in brightness based on a reference input between a reference light emitting element, an actually used light emitting element, and 0 in an element correction memory, and correcting the brightness during actual lighting. In a brightness correction device for a large screen video device having at least a brightness test input/output device, the brightness correction device includes a brightness sensor that detects the brightness of a light emitting element of the large screen video device, and a brightness sensor O analog Temporarily stores the luminance data of the reference light emitting element lit by the initial luminance data generated from the analog/digital converter that converts the output into digital output and the luminance test input/output device, and stores the luminance data and the initial luminance data. a comparison/correction circuit that calculates a difference value by comparing the luminance data of the light-emitting element O in actual use; an element correction memory that stores the difference value obtained by the comparison/correction circuit; It is characterized by comprising a nonvolatile storage medium that stores the same contents as the memory.
添付図面は本発明による一実施例としての輝度補正装置
およびこＯ装置が使用されるすでに提案Ｏ大ｉｉｉ面映
像装置用輝度制御装置Ｃ％願昭５８−１０２８３２）の
概略プロ、り線図を示す。図において、輝度補正装置１
は、制御機構１０ｍに取付けられた輝度上ンｔ−１０、
アナログ−デジタル変換器（Ａ／Ｄ）１１、比較・補正
回路１２、素子補正メモリー１３、およびフロッピーデ
ィスク（Ｆ／Ｄ）１４により構成される。このような構
成において、大画面映像装置２のマ） ＩＪフックス状
配列された基準発光素子群２７は、最初に、輝度試験入
出力装置としてのマイクロプロセッサ２１から発生され
るイニシャル輝度補正データのテストプログラムによっ
て、階調データメモリ２２、加算器２５、点灯回路２６
を経て点灯される。輝度センサー１０は本実施例ではフ
ォトダイオードを使用し、イニシャル輝度補正データに
よ〕点灯された基準発元素子２７の表面をアドレス信号
（ＡＤＤ）に基づいて縦横に走査し輝度を検出する。The attached drawings show a schematic diagram of a brightness correction device according to an embodiment of the present invention and a brightness control device for a large-screen video device, which has already been proposed. show. In the figure, the brightness correction device 1
is the luminance top t-10 attached to the control mechanism 10m,
It is composed of an analog-to-digital converter (A/D) 11, a comparison/correction circuit 12, an element correction memory 13, and a floppy disk (F/D) 14. In such a configuration, the reference light emitting element group 27 arranged in the shape of an IJ hook of the large screen video device 2 first tests the initial brightness correction data generated from the microprocessor 21 as a brightness test input/output device. Depending on the program, the gradation data memory 22, adder 25, lighting circuit 26
It will be lit after. In this embodiment, the brightness sensor 10 uses a photodiode, and detects the brightness by scanning the surface of the reference light emitting element 27, which is turned on according to the initial brightness correction data, vertically and horizontally based on the address signal (ADD).
検出された輝度はＡ／Ｄ １１によりてデジタル値に変
換され比較Φ補正回路１２に一時記憶される。The detected luminance is converted into a digital value by the A/D 11 and temporarily stored in the comparison Φ correction circuit 12.
次に、基準発光素子は実際使用する発光素子に取替えら
れ再びマイクロプロセッサ２１からのイニシャル輝度補
正データによりて点灯され、発光輝度は再び輝度センサ
ー１０により検出される。この値は前述のようにＡ／Ｄ
１１によりデジタル信号に変換され、比較・補正回路
１２において基準発光素子の場合の輝度データとして一
時記憶され九膵度データとアドレス信号（ＡＤＤ）に基
づいて比較されさらに差値が算出され、この差値は素子
補正メモリー１４に記憶される。記憶された補正差値は
加算器２５に出力される。この補正差値は階調メそり２
２からの実際の画像データと加算器２５において輝度加
算され、点灯回路２６を経て送られ穴輝度加算された画
像データによって発光素子群２７が発光される。ここで
素子補正メモリ１３は階調データメモリ２２と同勢のリ
ード／ライト速度を必要とする几めに本実施例ではダイ
ナミックＲＡＭ （ＤＲｊｕりが用いられまｆｃＦ／Ｄ
１４は不揮発性記憶媒体として素子補正メモリ１３に記
憶された補正差値を保存するために用いられる。Next, the reference light emitting element is replaced with a light emitting element that is actually used and is again turned on based on the initial brightness correction data from the microprocessor 21, and the luminance of the light emitted by the light emitting element is detected by the brightness sensor 10 again. This value is determined by A/D as mentioned above.
11 into a digital signal, which is temporarily stored in the comparison/correction circuit 12 as luminance data for the reference light emitting element, and compared with the nine pancreatic degree data based on the address signal (ADD), and a difference value is calculated. The value is stored in element correction memory 14. The stored correction difference value is output to the adder 25. This correction difference value is gradation mesori 2
The luminance is added to the actual image data from 2 in an adder 25, and the light emitting element group 27 emits light based on the image data sent through a lighting circuit 26 and added with the hole luminance. Here, the element correction memory 13 requires a read/write speed similar to that of the gradation data memory 22, so in this embodiment, a dynamic RAM (DR) is used.
14 is used as a non-volatile storage medium to store the correction difference value stored in the element correction memory 13.
従って、発光素子自体が０年変化等により発光輝度にバ
ッノΦを生ずるとＦ／Ｄ １４に記憶された補正差値に
基づいて輝度補正が行われる。Therefore, when the light emitting element itself causes a change in luminance Φ due to a yearly change or the like, the luminance is corrected based on the correction difference value stored in the F/D 14.
本発明による輝度補正装置によって発光素子使用前の検
査選別に依存することなく、ま几保守点検を必要とせず
かつ表示画面０品質を大幅に向上および維持することが
できる。With the brightness correction device according to the present invention, the quality of the display screen can be significantly improved and maintained without relying on inspection and selection before use of the light emitting elements, without the need for machine maintenance and inspection.
添付図面は本発明による一実施例としての輝度補正装置
および該装置が使用される大画面映像装置ｏプロ、り線
図である。
（符号の説明）
１・・・輝度補正装置、２・・・大画面映像装置用輝度
制御装置、ｌＯ・・・輝度センサー、１１・・・アナロ
グ・デジタル変換器、１２・・・比較・補正回路、１３
・・・素子補正メモリ、１４・・・フロッピーディスク
、２１・・・輝度試験入出力装置、２２・・・階調デー
タメモリ、２５・・・加算器、２６・・・点灯回路、２
７・・・発光素子。The accompanying drawings are line diagrams of a brightness correction device and a large screen video device in which the device is used as an embodiment of the present invention. (Explanation of symbols) 1... Brightness correction device, 2... Brightness control device for large screen video device, lO... Brightness sensor, 11... Analog-to-digital converter, 12... Comparison/correction circuit, 13
... Element correction memory, 14... Floppy disk, 21... Brightness test input/output device, 22... Gradation data memory, 25... Adder, 26... Lighting circuit, 2
7... Light emitting element.
Claims (1)
装置用の輝度補正装置において、該輝度補正装置が、該
大画面映像装置の発光素子の輝度を検出する輝度センサ
ーと、該輝度センサーのアナログ出力をデジタル出力に
変換するアナログ・デジタル変換器と、該輝度試験入出
力装置から発生されるイニシャル輝度データにより点灯
された基準発光素子の輝度データを一時記憶し、該輝度
データと該イニシャル輝度データにより点灯された実使
用発光素子の輝度データとを比較し差値を算出する比較
・補正回路と、該比較・補正回路により得られた該差値
を記憶する素子補正メモリと、該素子補正メモリと同一
の内容を記憶する不揮発性記憶媒体とを具備することを
特徴とする大画面映像装置用輝度補正装置。1. In a brightness correction device for a large screen video device having at least a brightness test input/output device, the brightness correction device includes a brightness sensor that detects the brightness of a light emitting element of the large screen video device, and an analog output of the brightness sensor. Temporarily stores the luminance data of the reference light emitting element lit by the initial luminance data generated from the luminance test input/output device and the analog/digital converter that converts the luminance test input/output device into a digital output. A comparison/correction circuit that calculates a difference value by comparing the luminance data of the actually used light emitting element that is lit, an element correction memory that stores the difference value obtained by the comparison/correction circuit, and the element correction memory. 1. A brightness correction device for a large screen video device, comprising: a nonvolatile storage medium that stores the same content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16652384A JPS6145281A (en) | 1984-08-10 | 1984-08-10 | Brightness corrector for large screen video apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16652384A JPS6145281A (en) | 1984-08-10 | 1984-08-10 | Brightness corrector for large screen video apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6145281A true JPS6145281A (en) | 1986-03-05 |
| JPH0544678B2 JPH0544678B2 (en) | 1993-07-07 |
Family
ID=15832891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16652384A Granted JPS6145281A (en) | 1984-08-10 | 1984-08-10 | Brightness corrector for large screen video apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6145281A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04269790A (en) * | 1991-02-26 | 1992-09-25 | Matsushita Electric Ind Co Ltd | Information display device |
| WO1998040871A1 (en) * | 1997-03-12 | 1998-09-17 | Seiko Epson Corporation | Pixel circuit, display device and electronic equipment having current-driven light-emitting device |
| JP2004038209A (en) * | 1997-03-12 | 2004-02-05 | Seiko Epson Corp | Display device and electronic equipment |
| JP2004038210A (en) * | 1997-03-12 | 2004-02-05 | Seiko Epson Corp | Display device and electronic equipment |
| KR100550020B1 (en) * | 1997-03-12 | 2006-10-31 | 세이코 엡슨 가부시키가이샤 | Pixel circuits, displays and electronics equipped with current-driven light emitting devices |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101663645B1 (en) * | 2015-06-15 | 2016-10-13 | 이선인 | Dental water jet having sterilizer |
-
1984
- 1984-08-10 JP JP16652384A patent/JPS6145281A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04269790A (en) * | 1991-02-26 | 1992-09-25 | Matsushita Electric Ind Co Ltd | Information display device |
| WO1998040871A1 (en) * | 1997-03-12 | 1998-09-17 | Seiko Epson Corporation | Pixel circuit, display device and electronic equipment having current-driven light-emitting device |
| US6518962B2 (en) | 1997-03-12 | 2003-02-11 | Seiko Epson Corporation | Pixel circuit display apparatus and electronic apparatus equipped with current driving type light-emitting device |
| JP2004038209A (en) * | 1997-03-12 | 2004-02-05 | Seiko Epson Corp | Display device and electronic equipment |
| JP2004038210A (en) * | 1997-03-12 | 2004-02-05 | Seiko Epson Corp | Display device and electronic equipment |
| KR100550020B1 (en) * | 1997-03-12 | 2006-10-31 | 세이코 엡슨 가부시키가이샤 | Pixel circuits, displays and electronics equipped with current-driven light emitting devices |
| JP3887826B2 (en) * | 1997-03-12 | 2007-02-28 | セイコーエプソン株式会社 | Display device and electronic device |
| US7362322B2 (en) | 1997-03-12 | 2008-04-22 | Seiko Epson Corporation | Pixel circuit, display apparatus and electronic apparatus equipped with current driving type light-emitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0544678B2 (en) | 1993-07-07 |
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