BACKLIGHT BRIGHTNESS MEASURING APPARATUS, BACKLIGHT BRIGHTNESS MEASURING METHOD, PROGRAM FOR PERFORMING MEASURING METHOD, AND STORAGE MEDIUM RECORDING IT

摘要

PROBLEM TO BE SOLVED: To remove a measurement error caused by the display condition of a display section in backlight brightness measurement.;SOLUTION: When an instruction for brightness measurement is input, an image switching control signal generation section 112 switches an image read from an image data storage memory to a brightness measuring image stored in a brightness measuring image data storage memory 110 by a changeover switch 111. Through a signal of a brightness measuring timing signal generation section 103, a backlight brightness calculation section 104 calculates the brightness of an LED backlight from a first light amount measurement result measured during the lighting period of an LED 109 and a second light amount measurement result measured during the shutoff period of the LED 109.;COPYRIGHT: (C)2007,JPO&INPIT