Hitachi-lg Data Storage, Inc.

Hitachi, Ltd.

Maxell, Ltd.

Fujitsu Corporation

Hitachi Maxell, Limited

Hitachi Consumer Electronics Co., Ltd.

Hitachi Plasma Patent Licensing Co., Ltd.

Fujitsu Hitachi Plasma Display Limited

Fuji Photo Film Company, Limited

Hitachi Maxwell, Ltd.

Hitachi Plasma Display Limited

Hatachi Plasma Patent Licensing Co., Ltd.

Yoshiho Seo

Satoshi Ouchi

Yasunobu Hashimoto

Yuya Ogi

Tadayoshi Kosaka

Tomoki Kobori

Naoki Itokawa

Toshiteru Nakamura

Takahiro Matsuda

Hajime Inoue

Shoji Yamamoto

Tomoto Kawamura

Koji Hirata

Seiji Murata

Ryuji Ukai

Shinsuke Onoe

Tomokatsu Kishi

Koichi Sakita

Mayumi Nagayoshi

Kazushige Takagi

Hiromi Kusaka

Tetsuya Sakamoto

Takashi Matsubara

Kenichiro Yamada

Kenji Awamoto

Keiichi Betsui

Yoshio Okamoto

Susumu Yoshida

Hidehiro Ikeda

Fumio Haruna

Yuki Nagano

Motonari Kifune

Shingo Hayashi

Tomoyuki Nonaka

Michio Hatagi

Yasushi Ohkawa

Hiroyuki Urata

Toshio Ueda

Yukinobu Tada

Tadashi Kuwabara

Masahiko Yatsu

Osamu Toyoda

Naoki Mori

Ryo Imai

Kouji Fujita

Minoru Hasegawa

Tadatsugu Hirose

Shinya Fukuta

Masayuki Fukui

Yoshihiro Machida

Takahiro Takamori

Tatsuya Ishitobi

Katsuya Irie

Tomonari Misawa

Takayuki Fujiwara

Tomohiko Tanaka

Taiichi Takezaki

Tatsuya Ishikawa

Kunikazu Oonishi

Shinsuke Inoue

Sakiko Narikawa

Akihiro Otsuka

Kenji Kiya

Junichi Yokoyama

Satoshi Oouchi

Masayuki Hatori

Hidenao Saito

Yoshito Onishi

Provided is a video display device wearable on the head of a user, wherein the video display device includes a video display unit capable of switching two or more display methods, a control unit for indicating a display method to the video display unit, a first detection unit for detecting the motion of the head of a user, a second detection unit for detecting the motion of the point of view of the user, and a motion determination unit for determining the motion state of the device user by using the output from the first detection unit and the output from the second detection unit. The control unit indicates a change of display methods to the video display unit in accordance with the determination result of the motion determination unit.

Video display device and control method

An optical scanning device includes: an optical scanning unit configured to repeatedly scan an irradiation destination of irradiation light to a predetermined trajectory; a light emission control unit configured to control light emission of the irradiation light to irradiate irradiation points to the predetermined trajectory; and a driving signal generation unit configured to generate a driving signal for driving the optical scanning unit, wherein the light emission control unit irradiates the irradiation points to the predetermined trajectory so that the irradiation points are substantially uniformly dispersed in a region in which a density of the irradiation points is relatively low in a region in which the irradiation light is irradiated.

Optical scanning device, catheter device, and distance measuring device

An optical scanning device for displaying or capturing an image is used, the device including: an optical scanning unit configured to scan emitted light while drawing a spiral trajectory, wherein the unit includes: a light guide path configured to guide incident light to output the emitted light from an emission end; and a vibration unit configured to vibrate the emission end; a light emission control unit configured to control light emission of the emitted light; a polar coordinate generation unit configured to generate a radius and a deflection angle relating to the spiral trajectory; a driving signal generation unit configured to generate a driving signal for driving the vibration unit; an angle correction unit configured to perform calculation for correcting an angle based on information from the driving signal generation unit and output an corrected angle; and a coordinate calculation unit configured to calculate coordinates of an image.

Optical scanning device, imaging device, and distance measurement device

To propose an optical scanning method for a video device including an optical scanning unit in which one end of a light guide path has a protruding beam-shaped structure. The video device includes the optical scanning unit having the light guide path in which light enters from one end and emits from the other end, and a vibration unit configured to apply vibration to the light guide path via a joint unit in a vicinity of the other end of the light guide path; a drive signal generation unit that generates a drive signal for inducing vibration in the vibration unit; and a scanning trajectory control unit which has a function of independently vibrating the light guide path in a first direction substantially perpendicular to an optical axis direction of the light guide path, and in a second direction substantially perpendicular to the optical axis direction of the light guide path and substantially perpendicular to the first direction by the vibration unit, and which generates a first drive signal configured to drive the vibration unit in the first direction and a second drive signal configured to drive the vibration unit in the second direction with any pattern. The scanning trajectory control unit generates the first drive signal and the second drive signal as sine waves having different phases and a substantially same frequency, and sets a modulation amount of an amplitude modulation of a sine wave of the second drive signal to be larger than a modulation amount of an amplitude modulation of a sine wave of the first drive signal.

Video device

Both uniformity of brightness and uniformity of color of the outside world are seen via a waveguide. A video image is reflected by a partial reflection surface inside the waveguide that includes an incident surface on which video image light is incident, first and second internal reflection surfaces that propagate the video image light incident from the incident surface while totally reflecting the video image light, and are substantially parallel to each other. A plurality of partial reflection surfaces that reflect a part of the video image light propagating by being totally reflected by the first and second internal reflection surfaces, output the part of the video image light as output light from the first internal reflection surface to the outside of the waveguide, and transmit the part of the video image light being incident, and are disposed substantially parallel to each other inside the waveguide.

Waveguide and video image display device

A terminal display device which a user wears on a user's head displays on a display unit an information object to be overlapped with a field of view of the user, detects a motion of the terminal display device, and stores a pattern of a motion of the terminal display device and an operation content of the information object that is displayed in association with each other. An information type management memory unit stores information related to a display mode of each of the information objects. A display control unit determines an operation content of the terminal display device based on the motion that is detected and an association between the motion pattern and the operation content, specifies the information object disposed at a predetermined position of the display unit, and performs an operation specified with the determined operation content on the specified information object.

Display system and display control method of display system

In an optical scanner, a vibration portionincludes first and third elementsandthat vibrate a light guide pathin a direction substantially perpendicular to an optical axis direction, and second and fourth elementsandthat vibrate the light guide path in a direction substantially perpendicular to a vibration direction thereof. A driving signal is applied to each of electrodesto, each of which corresponds to one electrode of each of the first to fourth elements, and the other electrodeis used as a common electrode having a floating potential. A driving signal generatorgenerates a driving signal such that a median value of driving signals Vand Vapplied to the first and third elements and a median value of driving signals Vand Vapplied to the second and fourth elements correspond to substantially the same value.

Optical scanner and imaging apparatus

The video display device includes a laser light source unit, a video processing unit that outputs a video gradation signal, a current gain signal, and a current offset signal, a laser driver that outputs the drive current based on the video gradation signal, the power supply gain signal, and the current offset signal, and a dimming level processing unit that divides a dimming level for designating brightness of a video into a plurality of dimming modes and divides the dimming level into in-mode levels within the divided dimming modes, wherein the video processing unit includes a video gradation value output unit that outputs the video gradation signal obtained by scaling and offsetting a gradation value of the video based on the dimming mode and the in-mode level, a current gain output unit that outputs the current gain signal depending on the dimming mode.

Video display device

According to the present invention, in an image display device that displays two images in parallel, a peak current for light source driving and continuation of a peak current are suppressed without reducing luminance of a display image. An image display device includes a light source unit, two panel units, and a timing control unit. A period of one frame of an image displayed by each panel unit has a standby period in which the panel unit is not illuminated by the light source unit for image generation and a lighting period in which the panel unit is illuminated by the light source unit. The timing control unit controls an operation timing such that the periods of one frame of the images displayed by the respective panel units overlap, and frame start times of the periods are shifted from each other by a predetermined delay time.

Image display device

In a wearable information display terminal, information related to an object is displayed at a timing required by a user in an easily recognized form. Photography is performed in a field-of-vision direction, a first object is detected from a first image obtained by the photography, relevant information related to the first object is acquired from a network, and a second image related to the relevant information is generated. A second object different from the first object is detected from the first image, the second object is used as a display trigger, and the second image is displayed when the second object is close to the first object.

Information display terminal, information display system, and information display method

A solid state light source device includes N (an integer of two or more) sets of solid state light source assemblies having a plurality of solid state light source cells arranged in a matrix pattern a multiple lens block including N incidence faces facing the N sets of solid state light source assemblies and causing light emitted from the solid state light source cells to be incident through multiple lens cells of a matrix pattern and one emission face composing the light incident from the N incidence faces and a dichroic filter that is obliquely arranged on the incidence faces inside the multiple lens block and selectively reflects or transmits incident light based on the incident light wavelength. Light distribution characteristics and color temperature of light exiting the emission face of the multiple lens block are controlled by a ratio of power supplied to the solid state light source cells.

Solid state light source device, automotive lighting using same, image display device, and drive method for solid state light source device

A video projection deviceincludes a video generation sectionthat has a micro display elementwhich generates video and an illuminating optical systemwhich illuminates a micro display element; projection sectionthat project the video which is generated by the video generation section onto the eyes of a user through an eyepiece section; and a mechanical support sectionthat connects the video generation section to the projection section using a housing section. The mechanical support section includes at least one transparent areathat is surrounded by the housing section, and penetrates in a direction parallel to a direction in which the video from the projection section is projected. The illuminating optical system includes a light source that emits light in a plurality of wavelength bands, and a controllerthat controls the output of the light source.

Video projection device and head mounted display using the same

An information display terminal includes an arithmetic unit performing a process that selects a predetermined type of communication unit among a plurality of types of communication units on the basis of, for example, information related to first objects recognized from a captured image, which is stored in advance, and acquires the related information from a predetermined device on the Internet through the communication unit and a process that, when the presence of a second object or a predetermined positional relationship between the first objects and the second object is specified in the captured image, displays the related information of the first objects in a viewing direction, using a display unit.

Information display method and information display terminal

The laser projection display device () includes a laser beam source (), a laser driver () driving the laser beam source, and an image processing unit () supplying a display image signal to the laser driver. The image processing unit applies a preliminary emission signal () to perform preliminary emission to an image signal () in a predetermined period (tto t) immediately before a black pixel signal is switched to a signal except for the black pixel signal when the image signal has a black pixel duration. In particular, the preliminary emission process is performed when the laser beam source is operated in a dark image region while being reduced in maximum light intensity, and, as the preliminary emission signal, a signal (L) corresponding to a light intensity which is 1/10 or less a maximum light intensity (La) in the dark image region.

Laser projection display device and driving method for laser beam source

Growing community of inventors

Tokyo, Japan

Yoshiho Seo