WO2009095867A3 - String of light modules - Google Patents

String of light modules Download PDF

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Publication number
WO2009095867A3
WO2009095867A3 PCT/IB2009/050344 IB2009050344W WO2009095867A3 WO 2009095867 A3 WO2009095867 A3 WO 2009095867A3 IB 2009050344 W IB2009050344 W IB 2009050344W WO 2009095867 A3 WO2009095867 A3 WO 2009095867A3
Authority
WO
WIPO (PCT)
Prior art keywords
shift register
string
register system
boundary scan
controlled
Prior art date
Application number
PCT/IB2009/050344
Other languages
French (fr)
Other versions
WO2009095867A2 (en
Inventor
Sebastiaan Constant Verhelst
Original Assignee
Nxp B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nxp B.V. filed Critical Nxp B.V.
Publication of WO2009095867A2 publication Critical patent/WO2009095867A2/en
Publication of WO2009095867A3 publication Critical patent/WO2009095867A3/en

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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • 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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines

Abstract

The present invention relates to a controlled lighting system (100) comprising a control system (10) and a string (40) of light modules (30). Each light module (30) consists of a light bar of LEDs (210, 211, 212) and each LED (210, 211, 212) is controlled by a shift register system (230) through a respective driver (220, 221, 222). The shift register system (230) receives an input data signal (TDI) and at least two control signals (TCK, TMS), while transmitting to the input of the next shift register system (230) an output data signal (TDO) and the same at least two control signals (TCK, TMS). In an embodiment, the shift register system (230) refers to a boundary scan test interface. Through the shift register system (230), each driver (220, 221, 222) is controlled by at least one 1-bit boundary scan cell implementing a boundary scan function. Thus, the intensity of each LED (210, 211, 212) in a string (40) of light modules (30) can be controllable, and the string (40) be effectively shortened using the bypass register (320) of the shift register system (230).
PCT/IB2009/050344 2008-01-30 2009-01-28 String of light modules WO2009095867A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08101107.4 2008-01-30
EP08101107 2008-01-30

Publications (2)

Publication Number Publication Date
WO2009095867A2 WO2009095867A2 (en) 2009-08-06
WO2009095867A3 true WO2009095867A3 (en) 2010-03-11

Family

ID=40913353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/050344 WO2009095867A2 (en) 2008-01-30 2009-01-28 String of light modules

Country Status (1)

Country Link
WO (1) WO2009095867A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340909B (en) * 2010-07-23 2014-01-15 聚积科技股份有限公司 Serial controller and serial bidirectional controller

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009044058A1 (en) * 2009-09-18 2011-03-31 Müller, Dietmar Dimmable fairy lights and switches for this
CN102714899B (en) * 2010-01-22 2015-09-23 皇家飞利浦电子股份有限公司 Comprise the lighting apparatus of multiple light tiles block
TWI410930B (en) * 2010-05-24 2013-10-01 Macroblock Inc Led driver and led driving system
CN102264176B (en) * 2010-05-31 2014-01-29 聚积科技股份有限公司 Driving device of LED (light emitting diode)
TWI414207B (en) * 2010-07-16 2013-11-01 Macroblock Inc Serial controller and serial bi-directional controller
GB2519587A (en) 2013-10-28 2015-04-29 Barco Nv Tiled Display and method for assembling same

Citations (6)

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Publication number Priority date Publication date Assignee Title
GB2308664A (en) * 1995-12-28 1997-07-02 Eastman Kodak Co Boundary scanning interface for testing and controlling the operation of an IC
WO2005101916A1 (en) * 2004-04-19 2005-10-27 Tir Systems Ltd. Parallel pulse code modulation system and method
EP1694099A2 (en) * 2005-02-18 2006-08-23 Samsung Electronics Co., Ltd. LED driver device
WO2007023454A1 (en) * 2005-08-26 2007-03-01 Koninklijke Philips Electronics N.V. Led light source for backlighting with integrated electronics
US20070236156A1 (en) * 2001-05-30 2007-10-11 Color Kinetics Incorporated Methods and apparatus for controlling devices in a networked lighting system
US20080292344A1 (en) * 2007-05-22 2008-11-27 Oki Data Corporation Drive circuit, light emitting diode head, and image forming apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2308664A (en) * 1995-12-28 1997-07-02 Eastman Kodak Co Boundary scanning interface for testing and controlling the operation of an IC
US20070236156A1 (en) * 2001-05-30 2007-10-11 Color Kinetics Incorporated Methods and apparatus for controlling devices in a networked lighting system
WO2005101916A1 (en) * 2004-04-19 2005-10-27 Tir Systems Ltd. Parallel pulse code modulation system and method
EP1694099A2 (en) * 2005-02-18 2006-08-23 Samsung Electronics Co., Ltd. LED driver device
WO2007023454A1 (en) * 2005-08-26 2007-03-01 Koninklijke Philips Electronics N.V. Led light source for backlighting with integrated electronics
US20080292344A1 (en) * 2007-05-22 2008-11-27 Oki Data Corporation Drive circuit, light emitting diode head, and image forming apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BURKHART J ET AL: "A Monolithically Integrated 128 Led-Driver and Its Application", IEEE TRANSACTIONS ON CONSUMER ELECTRONICS, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 52, no. 1, 1 February 1986 (1986-02-01), pages 26 - 31, XP011158441 *
T-F WU ET AL: "Sequential Color LED Backlight Driving System for LCD Panels with Area Control", POWER ELECTRONICS SPECIALISTS CONFERENCE, 2007. PESC 2007. IEEE, IEEE, PISCATAWAY, NJ, USA, 17 June 2007 (2007-06-17), pages 2947 - 2952, XP031218723 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102340909B (en) * 2010-07-23 2014-01-15 聚积科技股份有限公司 Serial controller and serial bidirectional controller

Also Published As

Publication number Publication date
WO2009095867A2 (en) 2009-08-06

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