DE602004015617D1 - Kombinierter exponentieller und linearer RGB LED-Stromsenkender Digital-Analaog-Wandler - Google Patents
Kombinierter exponentieller und linearer RGB LED-Stromsenkender Digital-Analaog-WandlerInfo
- Publication number
- DE602004015617D1 DE602004015617D1 DE602004015617T DE602004015617T DE602004015617D1 DE 602004015617 D1 DE602004015617 D1 DE 602004015617D1 DE 602004015617 T DE602004015617 T DE 602004015617T DE 602004015617 T DE602004015617 T DE 602004015617T DE 602004015617 D1 DE602004015617 D1 DE 602004015617D1
- Authority
- DE
- Germany
- Prior art keywords
- exponential
- linear
- color
- idac
- leds
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04392045A EP1659830B1 (de) | 2004-11-23 | 2004-11-23 | Kombinierter exponentieller und linearer RGB LED-Stromsenkender Digital-Analaog-Wandler |
Publications (1)
Publication Number | Publication Date |
---|---|
DE602004015617D1 true DE602004015617D1 (de) | 2008-09-18 |
Family
ID=34931998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE602004015617T Active DE602004015617D1 (de) | 2004-11-23 | 2004-11-23 | Kombinierter exponentieller und linearer RGB LED-Stromsenkender Digital-Analaog-Wandler |
Country Status (4)
Country | Link |
---|---|
US (2) | US7038402B1 (de) |
EP (1) | EP1659830B1 (de) |
AT (1) | ATE404036T1 (de) |
DE (1) | DE602004015617D1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7384150B2 (en) * | 2005-05-27 | 2008-06-10 | 3M Innovative Properties Company | Light emitting diode (LED) illumination control system and method |
US7830560B2 (en) * | 2007-01-31 | 2010-11-09 | Hewlett-Packard Development Company, L.P. | System and method for adaptive digital ramp current control |
EP2235434A4 (de) * | 2007-12-24 | 2011-04-20 | Moore Benjamin & Co | System zur darstellung von farben mit einer integrierenden lichtkapsel |
US8299729B2 (en) | 2009-09-22 | 2012-10-30 | Infineon Technologies Austria Ag | System and method for non-linear dimming of a light source |
US8937930B2 (en) | 2009-11-19 | 2015-01-20 | Qualcomm, Incorporated | Virtual peripheral hub device and system |
WO2011084837A1 (en) * | 2010-01-05 | 2011-07-14 | 3M Innovative Properties Company | Controlling light sources for colour sequential image displaying |
US10108049B2 (en) | 2010-06-04 | 2018-10-23 | Apple Inc. | Gray scale inversion reduction or prevention in liquid crystal displays |
US9666137B2 (en) | 2010-10-25 | 2017-05-30 | Apple Inc. | OLED driving technique |
US20120182939A1 (en) | 2011-01-14 | 2012-07-19 | Qualcomm Incorporated | Telehealth wireless communication hub and service platform system |
US9035568B2 (en) | 2011-12-05 | 2015-05-19 | Qualcomm Incorporated | Telehealth wireless communication hub device and service platform system |
EP2894944A1 (de) * | 2014-01-14 | 2015-07-15 | Dialog Semiconductor GmbH | Verfahren zur Verbesserung der Genauigkeit eines Exponentialstrom-Digital-Analog-Wandlers (IDAC) mithilfe binär gewichteter MSB |
EP2894943B1 (de) | 2014-01-14 | 2020-02-26 | Dialog Semiconductor (UK) Limited | Vorrichtung zur Verbesserung der Genauigkeit eines Exponentialstrom-Digital-Analog-Wandlers (IDAC) mithilfe binär gewichteter MSB |
DE102015205808A1 (de) * | 2015-03-31 | 2016-10-06 | Osram Gmbh | Schaltungsanordnung zum Betreiben zumindest einer ersten und genau einer zweiten Kaskade von LEDs |
CN111065187B (zh) | 2018-10-17 | 2022-04-26 | 戴洛格半导体(英国)有限公司 | 电流调节器 |
CN110996432B (zh) * | 2019-12-31 | 2021-10-08 | 深圳市创荣发电子有限公司 | 一种调光方法、可读存储介质及led灯 |
CN113905476B (zh) * | 2021-10-28 | 2024-02-02 | 上海艾为电子技术股份有限公司 | 指数调光方法、映射电路、调光电路及电子设备 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4244024A (en) * | 1978-08-10 | 1981-01-06 | Hewlett-Packard Company | Spectrum analyzer having enterable offsets and automatic display zoom |
JPS5995595A (ja) * | 1982-11-25 | 1984-06-01 | ヤマハ株式会社 | 電子楽器 |
JPS59149539A (ja) * | 1983-01-28 | 1984-08-27 | Toshiba Corp | 固定小数点−浮動小数点変換装置 |
US6008820A (en) * | 1995-08-04 | 1999-12-28 | Microsoft Corporation | Processor for controlling the display of rendered image layers and method for controlling same |
US6975079B2 (en) * | 1997-08-26 | 2005-12-13 | Color Kinetics Incorporated | Systems and methods for controlling illumination sources |
US6211626B1 (en) * | 1997-08-26 | 2001-04-03 | Color Kinetics, Incorporated | Illumination components |
CN1116545C (zh) * | 1999-10-14 | 2003-07-30 | 深圳市恒科数码光电有限公司 | 彩色光管 |
US6362578B1 (en) * | 1999-12-23 | 2002-03-26 | Stmicroelectronics, Inc. | LED driver circuit and method |
US6224216B1 (en) * | 2000-02-18 | 2001-05-01 | Infocus Corporation | System and method employing LED light sources for a projection display |
US6388388B1 (en) * | 2000-12-27 | 2002-05-14 | Visteon Global Technologies, Inc. | Brightness control system and method for a backlight display device using backlight efficiency |
US6596977B2 (en) * | 2001-10-05 | 2003-07-22 | Koninklijke Philips Electronics N.V. | Average light sensing for PWM control of RGB LED based white light luminaries |
US6586890B2 (en) * | 2001-12-05 | 2003-07-01 | Koninklijke Philips Electronics N.V. | LED driver circuit with PWM output |
US6683419B2 (en) * | 2002-06-24 | 2004-01-27 | Dialight Corporation | Electrical control for an LED light source, including dimming control |
JP3715969B2 (ja) * | 2003-03-05 | 2005-11-16 | キヤノン株式会社 | 色信号補正装置及び画像表示装置 |
US7158668B2 (en) * | 2003-08-01 | 2007-01-02 | Microsoft Corporation | Image processing using linear light values and other image processing improvements |
KR100670581B1 (ko) * | 2005-02-18 | 2007-01-17 | 삼성전자주식회사 | Led구동장치 |
-
2004
- 2004-11-23 DE DE602004015617T patent/DE602004015617D1/de active Active
- 2004-11-23 EP EP04392045A patent/EP1659830B1/de not_active Not-in-force
- 2004-11-23 AT AT04392045T patent/ATE404036T1/de active
- 2004-11-30 US US10/999,827 patent/US7038402B1/en active Active
-
2006
- 2006-03-29 US US11/392,396 patent/US7551153B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP1659830B1 (de) | 2008-08-06 |
EP1659830A1 (de) | 2006-05-24 |
US20060175990A1 (en) | 2006-08-10 |
US7551153B2 (en) | 2009-06-23 |
US7038402B1 (en) | 2006-05-02 |
ATE404036T1 (de) | 2008-08-15 |
US20060108952A1 (en) | 2006-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |