Sony Corporation

Yoshihiro Katsu

Mitsuyasu Asano

Tomohiro Nishi

Akihiro Ohta

Norimasa Furukawa

Mitsunari Hoshi

Masatake Hayashi

Ichiro Murakami

Tetsuji Inada

Tomio Aoki

Kazuto Kimura

Mitsuru Okabe

Disclosed herein is a display device including: a liquid crystal display section adapted to display an image based on a video signal; a backlight; and a processing section adapted to correct the video signal and set the luminance of the backlight based on two pieces of information, a peak level of the video signal in a display screen or in each of a plurality of partial display areas into which the display screen is divided, and factor data obtained from a data map made up of a reference position on the display screen and the factor data that are associated with each other.

Display device and display method

A liquid crystal display includes: a light source unit that includes a light-guiding plate with a light-exit plane partitioned into emission subsections, and one or plural sides, and light sources; a liquid-crystal-display panel that includes pixels, and modulates light emitted from the light source unit, thereby performing image display; and a display control unit that includes a partitioning-drive processing section generating each of a light-emission pattern signal and a partitioning-drive image signal, performs light-emission driving for each light source, and performs display driving for each pixel. The partitioning-drive processing section performs a gain correction of multiplying each pixel signal in the input image signal by a predetermined gain factor that is set so that a value increases as a pixel position of the pixel signal goes away from the light source, and generates the light-emission pattern signal and the partitioning-drive image signal, by using gain-corrected pixel signal.

Liquid crystal display

Disclosed is a backlight control apparatus for controlling a backlight used in a liquid crystal display, the backlight having a lighting area that includes a plurality of blocks in each of which a backlight luminance is individually allowed to change. The apparatus includes a backlight control unit that calculates the backlight luminance of each block so that the absolute value of the difference between a backlight lighting ratio and 1 is at or below a first value, and controls the backlight so as to yield the calculated backlight luminances of the respective blocks, the backlight lighting ratio being the ratio between backlight set values of neighboring blocks.

Apparatus and method for controlling backlight and liquid crystal display

A display apparatus includes a display section, a backlight, and a drive section. The display section is formed from a liquid crystal display apparatus of the transmission type having a display area formed from pixels arranged in a matrix. The backlight is formed from a plurality of light source units disposed individually corresponding to a plurality of display area units which form the display area and configured to illuminate the back side of the display section. The drive section is configured to drive the display section and the backlight based on input signals from the outside. The drive section includes a control section configured to control a light emitting state of the light source unit corresponding to each of the display area units based on a display area unit internal maximum input signal which indicates a maximum value from among the input signals corresponding to the display area unit.

Display apparatus and driving method therefor

A light source system capable of controlling a light emission amount of a light source section more accurately while keeping manufacturing costs low is provided. The light source system includes a light source, a light-sensing device detecting light from the light source, a calculation means, and a light source control means. The calculation means calculates a net light amount by subtracting a measurement environment component from a light amount detected by the light-sensing device. The measurement environment component is independent of a lighting state in the light source. The light source control means controls the light source on the basis of the net light amount obtained by the calculation means.

Light source system

Herein disclosed a backlight apparatus for illuminating a color display panel from the back side, which may include a light source section having a composite light source, a light detecting light introducing plate, a plurality of light amount sensors for the individual colors, and control means.

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Kanagawa, Japan

Yoshihiro Katsu