Sharp Kabushiki Kaisha Corporation

Atsushi Aoki

Tsuyoshi Muramatsu

Hiroshi Tanaka

Takashi Morisue

Toshiyuki Iwai

Hiroaki Niwamoto

Masahiro Esashi

Manabu Yumoto

Daiji Kitagawa

Masashi Mayumi

Tsukasa Kaminokado

Norimasa Yamaguchi

Mikihiro Noma

Tatsuhiko Suyama

Shinichi Miyazaki

Takatoshi Kira

Masayuki Ehiro

Noboru Kubo

Yousuke Nakamura

Teruhisa Masui

Daisuke Suehiro

Yumi Yamauchi

Kunihiko Iizuka

There is achieved an electronic device including a position detector that can detect a touch position with high accuracy even when thickness reduction proceeds. A touch position detection method includes: a first determination step (S) of determining whether or not negative-value data is included in mutual capacitance detection data; a second determination step (S) of determining whether or not a mutual capacitance detection region and a self-capacitance detection region overlap; a third determination step (S) of determining whether or not the maximum value of the absolute value of negative-value data and the area of a negative-value data region are equal to or greater than thresholds; a correction step (S) of correcting the mutual capacitance detection data on the basis of self-capacitance detection data; and a touch position specification step (S) of specifying a touch position on the basis of the mutual capacitance detection data after the correction.

Electronic device provided with position detector and touch position detection method

A liquid crystal panel is provided which is capable of performing displaying with sufficiently high quality while reducing power consumption. The liquid crystal panelincludes a plurality of pixel electrodes, a plurality of counter electrodes which are smaller in number and larger in individual size than the plurality of pixel electrodes, a liquid crystal layer disposed between the plurality of pixel electrodes and the plurality of counter electrodes, and a control unit configured to control a voltage applied to the plurality of pixel electrodes and a voltage applied to the plurality of counter electrodes. In a predetermined case, the control unit operates in a power saving operation mode in which the control unit performs control such that a fixed voltage is applied to the plurality of pixel electrodes and a voltage corresponding to an image signal is applied to the plurality of counter electrodes.

Liquid crystal panel

A position detection device includes a sensor driving unit driving a touch sensor by providing a drive signal of a sine-wave to the touch sensor and a position detecting unit detecting a position of a touch on the touch sensor. The position detecting unit includes a first detection processing unit performing a touch detection process using an amplitude modulation scheme during a first detection processing period and a second detection processing unit performing the touch detection process using a frequency modulation scheme during a second detection processing period. A position detection method includes a sensor driving step of driving the touch sensor and a position detecting step of detecting the position. The position detecting step includes a first detection processing step of performing the touch detection process using the amplitude modulation scheme and a second detection processing step of performing the touch detection process using the frequency modulation scheme.

Position detection device, electronic device equipped with same, and position detection method

Provided is a technique of preventing a decrease in touch detection sensitivity even in the case where an air layer is present between electrodes for touch detection in a mutual capacitance touch panel-equipped display device. A touch panel-equipped display deviceincludes: a substrate; a plurality of first electrodes Rx spaced from each other on the substrate; a second electrode Tx located around or inside the plurality of first electrodes Rx on the substrate, to form a capacitance with each of the first electrodes; and a translucent cover portion C facing the substrate. Each of the first electrodes Tx or the second electrode Rx is in contact with the cover portion C, and an air layer AG is interposed between the substrateand the cover portion C in a region in which an electrode not in contact with the cover portion C is located.

Touch panel-equipped display device

In a transmissive liquid crystal display device including a liquid crystal panel and a backlight, the liquid crystal panel has pixels each divided into four subpixels, namely red (R), green (G), blue (B), and white (W) subpixels. Further, the backlight is a white backlight whose light emission luminance is controllable. Furthermore, a color-saturation conversion section performs a color-saturation reduction process on a first input RGB input signal serving as an original input signal, and then a gamma-correction section performs a gamma-correction process on the first RGB input signal. An output signal generation section calculates transmittances and a backlight value in accordance with gamma-corrected RGB input signal obtained after the gamma-correction process has been performed by the gamma-correction section.

Transmissive liquid crystal display device having color saturation conversion section

In a transmissive liquid crystal display device including a liquid crystal panel and a backlight, the liquid crystal panel contains pixels each divided into four subpixels, a red (R), a green (G), a blue (B), and a white (W) subpixel. The backlight is a white backlight emitting light with controllable emission luminance. A luminance lowering section performs luminance lowering processing on input RGB signals (original input signals) for transformation into luminance-lowered RGB signals. An output signal generating section obtains transmittances and a backlight value from the luminance-lowered RGB signals.

Transmissive liquid crystal display device having control section for controlling emission luminance of backlight

In a transmissive-type liquid crystal display device including a liquid crystal panel and a backlight, the liquid crystal panel has pixels each divided into four subpixels red (R), green (G), blue (B), and white (W). The backlight is a white backlight by which luminance of emitted light is controllable. A color-saturation reducing section carries out a process of reducing color saturation on a first RGB input signal, which is an original input signal, so that the first RGB input signal becomes a second RGB input signal. Thereafter, an output signal generating section obtains a transmissivity and a backlight value on the basis of the second RGB input signal.

Transmissive-type liquid crystal display device

The transmission liquid crystal display device includes a liquid crystal panel and a backlight, wherein the liquid crystal panel has pixels each of which is divided into four sub pixels as red (R), green (G), blue (B), and white (W) sub pixels. Further, an emission luminance of the backlight can be controlled.

Transmission liquid crystal display device

Each of image data sorted so as to correspond to divided areas respectively is stored in an in-area image memory. A maximum luminance extracting section extracts the maximum luminance value therefrom and records it onto the maximum luminance storage section. In accordance with the maximum luminance value that is thus stored in the maximum luminance storage section and that each of the areas has, a BL candidate value calculating section and a BL luminance difference adjusting section determine an emitted-light luminance in a target area such that a difference between the backlight luminance in the target area and the backlight luminance in its adjacent area is not more than a tolerance value.

Transmissive display device

The data interpolation sectionincludes: a direction data calculation sectionfor calculating a plurality of direction data, each of the plurality of direction date indicating a directional amount along a plurality of directions including at least one of an upper right direction and a lower right direction within the vicinity of a target pixel; a direction detection sectionfor detecting at least one direction of the edge within the vicinity of the target pixel by using the plurality of direction data calculated by the direction data calculation section; a direction color signal calculation sectionfor calculating at least one color signal corresponding to the at least one direction detected by the direction detection section; and a target pixel color signal calculation sectionfor calculating a color signal for the target pixel by using the at least one color signal calculated by the direction color signal calculating section

Image processing apparatus, imaging apparatus, image processing method, image processing program and recording medium

A digital information recording carrier has a planar recording surface having an information recording area in which cells corresponding to bits are virtually set in a matrix form, each cell being provided with an optically recognizable mark corresponding to digital information so that the digital information is recorded in the information recording area as a two-dimensional pattern. The carrier also has specific patterns each consisting of a plurality of cells which are linked together and which are given marks in a given pattern. Some of the specific patterns are placed in an inner portion apart from a perimeter of the information recording area.

Method and apparatus for recording digital information in two-dimensional pattern, carrier of digital information recorded thereby, and a method and apparatus for decoding such digital information

A digital information recording carrier has a planar recording surface having an information recording area in which meshes corresponding to bits are virtually set in a matrix form, each mesh being provided with an optically recognizable mark corresponding to digital information so that the digital information is recorded in the information recording area as a two-dimensional pattern. The carrier also has specific patterns each consisting of a plurality of meshes which are linked together and which are given marks in a given pattern. Some of the specific patterns are placed in an inner portion apart from a perimeter of the information recording area.

There is provided a method for recording digital information that, when digital information is recorded as a two-dimensional pattern on a planar recording surface, the digital information can be easily coded and decoded. A specific pattern for representing a location within the recording surface is made up by giving marks in a specified pattern to a plurality of meshes which are adjoined to one another into a specific shape. A rectangular block is composed of a plurality of meshes adjoined to one another longitudinally and transversely into a rectangular shape and has longitudinal and transverse dimensions larger than those of the specific pattern. A segment in which the specific patterns are overlaid in the units of meshes or circumscribed to the rectangular block is set. An information recording area for expressing the two-dimensional pattern is composed by arraying a plurality of the segments without clearances on the recording surface. The digital information to be recorded is divided according to the number of the segments and then resulting pieces of unitary information are recorded into the segments.

Recording method, decoding method, and decoding apparatus for digital

An information processing apparatus has a capability of opening two or more windows and processing an object such as text, graphics, and a picture on each page. This information processing unit includes a pasting unit for pasting a tag window at any location on each page, a registering unit for registering one or more objects in the tag window, and a linking unit for linking the page to the tag window or unlinking the tag window from the page.

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Nara, Japan

Atsushi Aoki