Hitachi, Ltd.

Other

Hitachi Maxell, Limited

Nohmi Bosai Ltd.

Hitachi Video and Information Systems, Inc.

Toshiba Tec Kabushiki Kaisha

Hitachi-high-technologies Corporation

Hitachi Displays, Ltd.

Toshimitsu Watanabe

Kazuhiko Yoshizawa

Masahisa Tsukahara

Hitoaki Owashi

Nobuaki Kabuto

Yukimi Saiki

Mutsumi Suzuki

Yoshihisa Ooishi

Takeshi Mochizuki

Tetsu Ohishi

Makoto Kitamura

Mitsuo Nakajima

Junichi Ikoma

Kuninori Matsumi

Hidesato Morita

Makoto Masuyama

Yoshiro Mikami

Masakazu Sagawa

Akio Yamamoto

Kouji Kitou

Shigeru Mori

Hiroki Yoshikawa

Sadao Tsuruga

Toshiaki Kusunoki

Yuji Sano

Koji Suso

Go Uchida

Kenji Sato

Kazunari Nakagawa

Fumio Haruna

Yoshie Kodera

Akira Takahashi

Takahiko Yoshida

Masaki Nishikawa

Yoshimasa Yokoyama

Kiyoshi Wada

Junichi Satoh

Tomoharu Nakiri

Toshiaki Yanokura

Maki Furui

Satoshi Ishizuka

Takayuki Tanaka

Tohru Mori

Shigeo Ootsuki

Kazuki Kajima

Yasushi Naito

Eiji Takagi

Tutomu Simada

Naoko Kubo

Kohsuke Ozeki

Yoshinori Matsumura

Yasuhiko Komatsu

An interface is realized that can prevent video signals from being copied easily and which uses a luminance/color difference signal transmission scheme with an excellent harmony with a television circuit. In a video transmission using a digital interface, colorimetry information for defining the conversion from the luminance/color difference signal into a primary color signal and video aspect ratio information are transmitted along with the luminance/color difference type video signal. This allows reproduction of video with high quality and high resolution and also realizes a copyright protection which allows only the users authorized by key information to use the content of the video. With this transmission scheme, it is possible to provide a transmitting apparatus, a receiving apparatus and an interface which highly harmonize with a rationalized television-based circuit.

Video signal transmitting apparatus and video signal receiving apparatus

This mass spectrometric device is provided with a sample container () for placing a measurement sample () therein, a detector () analyzing the mass of a sample and detecting a drug, or the like, in the sample, a dielectric container () linked to the sample container for running a discharge current into air to provoke ionization, a valve () for sending air intermittently to the sample container, the dielectric container and the detector, a barrier discharge high-voltage power source () to be discharged by the dielectric container, a current detection unit () connected to the barrier discharge high-voltage power source for detecting a discharge current (), a discharge-start timing detection unit () connected to the current detection unit for detecting the discharge-start timing based on the current detection result from the current detection unit to send a discharge-start timing signal (), and a control unit () for controlling each constituent.

Mass spectrometric device and mass spectrometric device control method

According to one embodiment, a circuit board includes a board main body, an electrode, a circuit plate and a connector. The board main body includes a first surface, a second surface located opposite to the first surface, a first side edge that extends between the first surface and the second surface, and a second side edge that extends between the first surface and the second surface and intersects the first side edge. The second side edge is provided with a fitting part. The electrode is provided on the first surface. The circuit plate is soldered to the electrode and has flexibility. The connector is attached to the board main body. A cable is inserted into the connector in a direction perpendicular to the first side edge.

Circuit board and method of manufacturing inkjet head

Provided is an alarm device capable of performing transmission and reception reliably while suppressing an amount of current consumption. An alarm device () includes: a fire detection circuit (); a control circuit (); and a transmitting/receiving circuit (). The transmitting/receiving circuit () transmits the status signal to the another alarm device () with a transmission pattern formed by combining transmission periods and transmission suspension periods a predetermined number of times, and receives the status signal transmitted by the another alarm device () in an intermittent reception cycle. A time length of each of the transmission periods and the transmission suspension periods is set so that the another alarm device () that has failed to receive the status signal transmitted in a first intermittent reception cycle can receive the status signal in a second intermittent reception cycle and subsequent intermittent reception cycles.

Alarm device

An alarm system and an alarm device that are capable of enhancing a fail-safe function. A fire alarm device (A) operating as a master unit transmits a switching request signal to fire alarm devices operating as slave units at a predetermined timing. The switching request signal contains at least an own address and an address of a fire alarm device (B) that is to operate as the master unit next (S). Upon reception of the switching request signal, among the fire alarm devices operating as the slave units, the fire alarm device (B) that is to operate as the master unit next judges whether or not switching is possible based on switching availability judgment information for judging whether or not switching to the master unit is possible (S), and, when it is judged that switching is possible, starts operating as the master unit (S).

Alarm system and alarm device

Video signal transmitting apparatus for transmitting different type video signals depending on capability of video signal receiving apparatus

In an FED (Field Emission Display), lowering of a color temperature is suppressed which is caused by that light emission luminance of respective color phosphors is different from each other so as to achieve a better white balance. A display apparatus is equipped with a cathode substrate containing a plurality of electron emitter elements, and an anode substrate. The anode substrate is arranged opposite to the cathode substrate, and contains three colors of red, green, blue phosphors which are excited by electrons emitted from the electron emitter elements so as to emit light. Then, an area of either the red phosphor or an area of the blue phosphor is made smaller than an area of the green phosphor.

Field emission display apparatus with improved white balance

The present invention provides an image display device free of display defects and with high reliability to prevent destruction of electron sources due to injection of electric charge. On the outermost periphery of a display region, there are provided a bottom electrodeserving as data line, a scan line busserving as scan line, and dummy potential fixing electrodesDDDandDnot contributing to image display, and these are connected with electrodesandwith low impedance and constant potential.

Image display device

The present invention reduces smears arising from voltage decreases caused by the wiring resistance of scan lines for electron emission device selection. The display unit includes an FED panel in which scan lines, data lines, and electron supply devices are positioned at the intersections of the data lines and scan-lines. A scan driver for supplying a selection signal to the scan lines, and a data driver for supplying a drive signal to the data lines are provided. Electron emission devices selected by the selection signal are driven by the drive signal. A signal corrector circuit individually corrects the drive signal to be supplied to each data line to compensate for a voltage decrease caused by the wiring resistance in each column of the scan lines.

Display unit

An image display apparatus includes scanning line control circuits for supplying a scanning voltage Vfor selecting a plurality of electron sources in a unit of line to scan them in the vertical direction to the selected electron sources, a signal line control circuit for supplying a drive voltage Vbased on an image signal to the electron sources of one line, and a signal processing circuit having a correction circuit, and the correction circuit corrects the image signal to add to the drive voltage Van offset for compensating a voltage drop caused by an internal resistance R of a switch circuit in the scanning line control circuit, so that the voltage drop caused by the internal resistance of the switch circuit is compensated to lower or suppress reduction of brightness.

Image display apparatus

To improve luminance uniformity in a panel plane, for example, there is set an amplitude of a pixel driving voltage which is an anode current in the neighborhood of a threshold value of electron emission of one pixel and the amplitude is kept as a threshold value correction value for each pixel, and to correct the luminance variation in the high-luminance emission between the pixels, there is set an amplitude of a pixel driving voltage which is an anode current in the neighborhood of a maximum value of electron emission of one pixel and the amplitude is kept as a gain correction value for each pixel. In the configuration, when a video image is displayed, the input video signal is corrected using the threshold correction value and the gain correction value for each pixel.

Display device having luminance correcting function

The present invention provides a bright and high-resolution display apparatus having a dynamic range exceeding the number of gray-scale voltage (or current) outputs, which a signal driver is capable of generating. In accordance with the present invention, a select period, in which a group of pixels on each row is driven, is divided into a plurality of sub-periods. The signal driver supplies a voltage output varying from sub-period to sub-period to selected pixels through a signal electrode. The pixel is capable of expressing various values of a gray scale, the size of which is at least approximately equal to (the number of gray-scale voltage outputs, which the signal driver is capable of generating)&#xd7;(the number of sub-periods). By changing the ratio of the length of a sub-period to the length of another sub-period or the range of the driving voltage (or current), the dynamic range of the display can be further increased.

Display apparatus

Growing community of inventors

Yokohama, Japan

Toshimitsu Watanabe