Light emitting module drive apparatus and its drive method

The present invention discloses a driving device of a light emitting module, and the drive device is used to generate a drive current according to a first input voltage and a second input voltage to the light emitting module. The driving device comprises an amplifier, a first loop circuit and a seco...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG SHUWEN, LIN QIXIU, XIE BOKUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY EDUCATION ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	The present invention discloses a driving device of a light emitting module, and the drive device is used to generate a drive current according to a first input voltage and a second input voltage to the light emitting module. The driving device comprises an amplifier, a first loop circuit and a second loop circuit. The amplifier comprises a first input end, a second input end and an output end; a first reactive circuit is used to determine a first reactive voltage inputted to the first input end according to an output voltage produced by the amplifier and the first input voltage; a second reactive circuit is used to determine a second reactive voltage inputted to the second input end according to an output voltage generated by the amplifier and the second input voltage.