Sharp Kabushiki Kaisha Corporation

Yasushi Tetsuka

Kazuyoshi Yoshiyama

Ryoji Sakurai

Hideki Suzuki

Tomoo Nishigaki

Naoaki Shibamoto

Toshiyuki Fujine

Naoko Kondoh

Toshiyuki Gotoh

Masahiro Okui

Ryuichi Niiyama

Tetsu Araki

Katsuo Kojima

Shiroh Takeda

A technology of preventing feeling of a viewer on brightness from significantly changing when content is switched is provided. A video display device () includes a calculation unit () that calculates video feature relating to a display video, and a mute video display unit that displays a mute video posterior to a first display video, in which luminance of the mute video is luminance corresponding to a value of the video feature relating to the first display video.

Video display device, television receiver, transmitting device, control program, and recording medium

A technology of preventing feeling of a viewer on brightness from significantly changing when content is switched is provided. A transmitting device () includes a calculation unit () that calculates a video feature of a transmission video signal, and a mute video generation unit () that generates a mute video posterior to a first video signal, in which luminance of the mute video is luminance corresponding to a value of a video feature relating to the first video signal.

Video processing device, transmitting device, control program, and recording medium

The occurrence of the halo phenomenon caused in a display panel unit is detected in a liquid crystal display device that displays an image in the display panel unit including color filters of a plurality of colors by respectively controlling emission ratios of a plurality of LEDs emitting lights of colors respectively corresponding to the plurality of color filters. Upon detection, a part of the display panel unit, for example, the channel number and the vicinity thereof are set as a non-detection area in which the detection of the halo phenomenon is restricted and the remaining area is set as a detection area. The chroma of light, which corresponds to mixed light from the plurality of LEDs, is reduced by controlling the emission ratios of the LEDs on the basis of the detection result in the detection area, so that the color of light is closer to white.

Image display device and image display method

Brightness expression without solid white pattern is enabled, and video expression with an improved black level is achieved. A distortion module () reduces the luminance of a backlight source according to the histogram of the video signal so that the contrast may be a predetermined target one. A configuration design unit () sets the gain according to the luminance level (BL) of the backlight source selected by the distortion module (). When setting the gain, the luminance level (BL) for reference of the backlight source preset according to the video feature value is referenced. If the video feature value meets a predetermined condition, the input video signal is always amplified with the gain. If not, depending on the relation between the BLand the BL, the input video signal is amplified or not.

Video display apparatus for adjusting the degree of amplification of the input image according to image characteristics

Growing community of inventors

Sakai, Japan

Yasushi Tetsuka