Sharp Kabushiki Kaisha Corporation

Sharp Corporation

Ezel Inc.

Hideo Takemura

Toshiya Okamoto

Noritoshi Kako

Yasukuni Yamane

Keisuke Iwasaki

Masaki Takakura

Yoji Noguchi

Toshiya Aoki

Motoki Takase

Hideto Hayasaki

Masao Izumi

Seido Kawanaka

Shiro Ida

Kouji Kumetani

Unevenness in brightness of a plane light source is controlled to improve a display quality of a plane light source. An LED module comprising one or a plurality of light source sections with a high brightness peak value and a large light and dark contrast difference, and an LED module comprising one or a plurality of light source sections with a low brightness peak value and a small light and dark contrast difference, are alternately arranged. The one or the plurality of light source sections comprise a white resist arranged on a substrate region around LED, as a reflection material. The light source section with a large brightness peak value and a large light and dark contrast difference, and the light source with a low brightness peak value and a small light and dark contrast difference, are formed by the difference in a reflection rate of the white resist.

Light source apparatus and liquid crystal display apparatus

Lighting device, and display apparatus providing lighting device

A video image transfer device includes a transfer section arranged to selectively transfer to a display device a plurality of video signals acquired from at least one image pickup device, an assigning section arranged to divide a refresh rate of the display device into portions and assign the portions among the plurality of video signals, and a transfer controller arranged to control the transfer section in such a manner that each of the video signals is transferred to the display device at a timing according to the portion of the refresh rate assigned to each of the video signals. This makes it possible to prevent a dropped frame and an insufficient resolution of an important video image.

Video image transfer device and display system including the device

The present invention relates to a method for discriminating between figure areas, e.g., half-tone photographs, drawings and the like, and text areas in an image. More specifically, an image is processed to determine the difference between maximum and minimum brightnesses in convolutions thereof. When the difference between the maximum and minimum brightnesses is less than or equal to a predetermined level, the center pixel in the convolution is determined to be a half-tone pixel. A half-tone area is detected by determining areas of the image having at least a predetermined number of half-tone pixels. In another aspect of the invention, contiguous areas of the image having fewer than a predetermined number of configuration pixels are determined to be vacant areas having neither figure nor character information.

Method for discriminating between figure and text areas of an image

An image processing device includes a multipurpose memory which stores intensity information as well as label information and a look-up memory. The output from the multipurpose memory is connected to an address of the look-up table memory and is converted by the look-up table memory. The image processing device operates to select an area in an image without erasing the data of an image to be processed and to change the color at a very high speed.

Image processing device

Growing community of inventors

Osaka, Japan

Hideo Takemura