Canon Kabushiki Kaisha

Hirokuni Takano

Hajime Sato

Katsuyuki Kobayashi

Yuichiro Yoshimura

Akihiro Matsushita

Takayuki Komine

Takayuki Hashimoto

Naoki Umemura

Ritsuo Machii

Takuto Kawahara

Takaya Konishi

A coordinate input apparatus includes a light projecting unit configured to project light parallelly to an effective coordinate input region, a reflection unit configured to retroreflect the light projected by the light projecting unit, and a light receiving unit configured to receive light from the light projecting unit or the reflection unit. The coordinate input apparatus includes a moving unit configured to move a set of the light projecting unit, light receiving unit, and reflection unit in a direction perpendicular to the effective coordinate input region in order to ensure a light amount with which a pointed position in the effective coordinate input region can be calculated based on variations of a light amount distribution obtained from the light receiving unit.

Coordinate input apparatus

A coordinate input apparatus includes a first housing and a second housing each of which incorporate at least two sensor units each including one of the light projecting unit and one of the light receiving unit. A pointed position to an effective coordinate input region is calculated based on variations of a light amount distribution obtained from the light receiving units of each of the first and second housings. In each of the first and second housings, the field range of a light receiving unit is almost parallel to the effective coordinate input region, the optical axis direction of the light receiving unit is a direction perpendicular to a line segment connecting the barycenters of at least two sensor units in a single housing, and the field range is set to be asymmetric to the optical axis direction.

In a rear projection type projector device, a transparent plate-like member is supported so as to incline from a vertical surface, and a lenticular screen and a Fresnel lens are placed on the transparent plate-like member. Accordingly, the lenticular lens and the Fresnel lens are in tight contact with the front plate owing to their own weight, and this makes it unlikely to create spaces between these components.

Rear projection type projector device

In a rear projector for projecting an image from behind a screen, its screen size is variable. In order to permit flexible adaptation to the variation in the screen size, the projector is constructed to permit easy adjustment of a detection device for detecting an image display position or a position indicated on the screen.

Projector

Electronic equipment has a display unit and an operation input unit. The display unit is arranged to be pivotal between a state wherein it obliquely stands on an electronic equipment main body (tilt state), and a state wherein it is folded on the equipment main body (close state), and the operation input unit is arranged to be pivotal between a state wherein it is inclined with respect to the electronic equipment main body, and a horizontal state. The operation input unit is interlocked with the pivotal movement of the display unit. When the display unit is pivoted to the tilt state, the operation input unit is pivoted to the inclined state. When the display unit is pivoted to the close state, the operation input unit is pivoted to the horizontal state.

Growing community of inventors

Yoshikawa, Japan

Hirokuni Takano