Apparatus and method for dynamically controlling backlight source

A dynamic backlight source control device is used for receiving a pixel input data to output a pixel output data and a pulse width modulation (PWM) signal. The device comprises an image analysis unit which receives the pixel input data, and outputs an image data after analyzing the image; a data uni...

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Bibliographische Detailangaben
1. Verfasser:	HONG JIANYOU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION BASIC ELECTRONIC CIRCUITRY 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 PULSE TECHNIQUE SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A dynamic backlight source control device is used for receiving a pixel input data to output a pixel output data and a pulse width modulation (PWM) signal. The device comprises an image analysis unit which receives the pixel input data, and outputs an image data after analyzing the image; a data unit which stores a relational data in relation to a brightness adjustment data and a PWM adjustment data within a gray scale range; a brightness computing unit which receives the image data and the relational data of the data unit, computes a required gray scale value corresponding to the required brightness, and also respectively outputs a required pixel brightness data and a required PWM data according to the required gray scale value; a PWM adjustment unit which receives the needed PWM data tooutput the PWM signal; and a multiplication unit which receives the pixel input data, and adjusts the brightness based on the required pixel brightness data to output the pixel output data.