An image display device and method therefor, which improve a visual contrast feeling by regulating a contrast and light source with a correlation maintained therebetween. A feature detection unit (11) detects MAX, MIN and APL of an input image signal. A control data generating unit (12) determines Gain for amplifying the difference between the MAX and the MIN up to a dynamic range width, and Offset for affording a DC level shift amount at which the input image signal to be amplified by the Gain falls within the output dynamic range of a DC level regulating unit (13B). A signal amplitude regulating unit (13A) amplifies the input image signal based on the APL and according to the Gain. The DC level regulating unit (13B) level-shifts the amplified input image signal according to the Offset value. The light source control unit (16) controls a light source (18) based on the Offset so that a visual brightness level on the screen is identical with a brightness level of the input image signal.
申请公布号
WO0068926(A1)
申请公布日期
2000.11.16
申请号
WO2000JP02938
申请日期
2000.05.09
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.;FUNAMOTO, TARO;MACHIDORI, WATARU;KOBAYASHI, TAKAHIRO;OTA, YOSHIHITO;ARIMOTO, KATSUYUKI