Hitachi, Ltd.

Osamu Ebina

Akira Arimoto

Hiroki Kaneko

Seigo Ono

Masahiko Yatsu

Yoshiyuki Kaneko

Kazutaka Tsuji

Jiro Kashio

Susumu Nakayashiki

Tetsuya Ooshima

Hiroyuki Wada

Tetsuya Ohshima

Takeshi Harakawa

Yoshinori Bekki

Hiroshi Nakase

Masahiro Fuse

It is an object of the present invention to implement a display providing high optical efficiency irrespective of the size of a light valve, and capable of enhancing the uniformity of the luminance of an image to be projected. In order to attain the foregoing object, for example, as shown in FIG. , a light valve of a projector is located roughly at the focus point of an illumination lens . Further, as shown in FIG. , a light source is also located roughly at the focus point of the illumination lens . Consequently, it is possible to implement a miniaturized projector.

Picture display device

An image projector, having a light source, an LCD panel into which a light emitted from the light source enters, and a projection lens into which the light emitted from the LCD panel enters. There exists, in an entrance pupil of the projection lens, a range in which light emitted from respective pixels of the LCD panel overlap with each other at least in a horizontal direction. The image projector forms part of an image display.

Projector and display system

A display device comprises a display, an input and a controller. The display displays a three-dimensional image, a vector cursor and a pointing image extending in a direction of movement of the vector cursor. The controller generates a display signal to display the three-dimensional image, vector cursor and pointing image. The controller recognizes the three-dimensional image crossing to the pointing image in response to the pointing signal from the input.

Three-dimensional display device and method for pointing displayed

A station diagnosis method in a communications network system including a closed ring transmission line and a plurality of data stations which can be connected to the ring transmission line by a plurality of line concentrators disposed in the ring transmission line wherein an internal ring transmission line is formed in the line concentrators so that the operation states of the line concentrators are diagnosed by transmitting diagnosis data through the internal ring transmission line.

Network system diagnosis system

A cursor moves at a constant velocity in a constant direction in a display space for displaying a three-dimensional image. When two parameters for representing a direction in a three-dimensional space are entered, the cursor changes its direction according to the entered direction at a rate determined by the entered magnitude. When a parameter for changing the velocity is entered, the cursor velocity is changed. It is not necessary to enter a three-dimensional coordinate to control the cursor to reach the desired position, and the manipulation of the cursor is very much simplified.

Three-dimensional display apparatus

Growing community of inventors

Atsugi, Japan

Osamu Ebina