US Patent No. 9,530,360

SENSOR DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, SENSING METHOD AND PROGRAM


Patent No. 9,530,360
Issue Date December 27, 2016
Title Sensor Device, Liquid Crystal Display Device, Sensing Method And Program
Inventorship Katsuyuki Matsui, Tokyo (JP)
Assignee NEC DISPLAY SOLUTIONS, LTD., Tokyo (JP)

Claim of US Patent No. 9,530,360

1. A sensor device, comprising:
a light sensor that acquires a first light quantity measurement value that is proportional to a light quantity of a backlight
and a first measurement time;

a light quantity target value calculating unit that calculates a light quantity target value based on a user setting for the
backlight;

a measurement time calculating unit that calculates a second measurement time for when the light sensor acquires a second
light quantity measurement value a next time, based on the acquired first light quantity measurement value and the light quantity
target value;

a normalizing unit that divides the acquired first light quantity measurement value by the first measurement time, to obtain
a normalized light quantity measurement value; and

a light quantity reference value setting unit that calculates an absolute value of a difference between the normalized light
quantity measurement value and the light quantity target value.