Seiko Epson Corporation

Kiyoshi Miyashita

Shinji Haba

Motoyuki Fujimori

Mutsuya Furuhata

Akitaka Yajima

Akitoshi Kuroda

Tomiyoshi Ushiyama

Keijiro Naito

Takeshi Takizawa

Shoichi Akaiwa

Kazuto Shinohara

Toshiaki Hashizume

Fumio Koyama

Mamoru Kobayashi

Takafumi Itoh

Satoshi Hirashima

Hiroshi Harima

Terunaga Koide

Miki Nagano

Masaru Kono

Jun Arai

Shogo Kurosawa

Kazuyosi Nakamura

An image projection system whereby a position of a pointer on a projected image can be easily controlled from a location separated from the main control means. The system comprises a projector, a computer for controlling the projector to display a pointer on a projected image in accordance with an operational signal from a terminal, and a remote controller for the projector. The remote controller comprises a pointing device and a transmitter for transmitting an operation signal as an infrared ray operational signal. The projector comprises a receiver which is an infrared (IR) optical receiver having directivity, and receives the infrared ray operational signal.

Image projection system and a method of controlling a projected pointer

Commands and data transferred via a network line NL are input to an ASP terminal portionvia a network interface controller. A first CPU loads a client application corresponding to the command and generated user interface image data via a graphics controller. A video signal conversion circuitreceives image data from the graphics controllerand transfers the processed image data to an LCD drive circuit. LCD drive circuitdrives an LCDin response to the received image data to project the desired image data onto a projection screen.

Projector connected to a network, a display system, and a method for displaying images and/or image data via a projector connected to a network

The present invention provides a technology that enables projection images to be overlaid with embellishment effects without depending on the capabilities of the image supply apparatus. A projection display apparatus that projects images onto a screen responsive to given image data, comprises: an embellishment effect memory for storing embellishment effect data representing an embellishment effect image that can be used to embellish an arbitrary image; an image embellishment section that generates embellished image data by overlaying an original image represented by the given image data and the embellishment effect image; a light modulation unit that is driven responsive to the embellished image data pixel by pixel; and an optical system for projecting onto the screen the embellished image obtained by the light modulation unit. A projection display apparatus superimposes the embellishment effect on the projected image without having to rely on the capabilities of an image supply apparatus.

Overlay process of images

Projection display apparatus, display method for same and image display apparatus

The present invention relates to an image projection system whereby a display position of a pointer on a projected image can be easily controlled from a location separated from the main control means. The system comprises a liquid crystal projector, a personal computer for controlling the liquid crystal projector to display a pointer on a projected image in accordance with an operation signal from a main operating section and a predetermined program, and a remote controller for the liquid crystal projector. The remote controller comprises a pointing device and a light emitting portion for wirelessly transmitting an operation signal. The liquid crystal projector comprises a light receiving portion for receiving tirelessly transmitted signals. The personal computer controls the liquid crystal projector to transfer the received signals to the personal computer and further controls the display position of the pointer according to the transferred pointing device operation signals.

A projector includes a first lens plate having a plurality of lenses, a second lens plate having a plurality of lenses, a light valve that modulates an output light beam from the second lens plate, and a light source apparatus. The light-source apparatus has a light-source lamp including an emission tube, a reflective mirror that reflects a divergent light beam from the light-source lamp to output a parallel light beam, the reflecting mirror having a reflective surface, a lamp housing that supports the reflective mirror, and an electrode lead. The electrode lead is led out of an end of the emission tube that is projected forward out of the reflective surface and is connected to an external connection terminal board which is positioned to a rear side of the reflective surface. The electrode lead is routed via the portion of the reflective mirror other than an effective area of the reflective mirror. A portion of the electrode lead positioned on the side of the reflective surface is arranged along a grove of a lens of the plurality of lenses of one of the first and second lens plate.

Light-source lamp unit, light-source device and projection-type display apparatus

A light-source lamp unit includes a light-source lamp unit detachably mounted, and a CPU constituting a drive and controller for the light-source lamp unit. The CPU senses lamp information obtained by a lamp-information storing block in the light-source lamp unit, pertaining to a lamp power rating, lamp life and whether a lamp is new or not, and starts counting operation time when the lamp is lit. The CPU compares the lamp life sensed and the operation time count, and forces the lamp to extinguish when the life of the light-source lamp expires. Prior to this action, the CPU gives a warning display before the life expiration of the lamp by a fixed duration of time, to warn that lamp replacement is needed. Because the lamp-information storing block in the light-source lamp unit stores the information about the lamp type and characteristics of the lamp, the light-source device can properly drive the lamp to light it and determine the lamp life even when a light-source lamp unit of a different type is used.

In a projection display provided with an optical unit, a power source unit, an external case to store the optical unit and the power source unit, a suction opening ( ) is formed in one end part of the power source unit, a discharge opening ( ) is formed in the other end part, and the suction opening ( ) is arranged in the vicinity of an air inlet in the external case. Because the suction opening ( ) and the discharge opening ( ) are provided, the inside of the power source unit can be independently and efficiently cooled, and the optical unit and the power source unit can be arranged closely to each other.

Projector

The present invention relates to an image projection system whereby a display position of a pointer on a projected image can be easily controlled from a location separated from the main control means. The system comprises a liquid crystal projector, a personal computer for controlling the liquid crystal projector to display a pointer on a projected image in accordance with an operation signal from a main operating section and a predetermined program, and a remote controller for the liquid crystal projector. The remote controller comprises a pointing device and a light emitting portion for wirelessly transmitting an operation signal. The liquid crystal projector comprises a light receiving portion for receiving wirelessly transmitted signals. The personal computer controls the liquid crystal projector to transfer the received signals to the personal computer and further controls the display position of the pointer according to the transferred pointing device operation signals.

A projector, which has a main body and a plurality of feet protruding from the main body to support the main body, includes a first adjuster that adjusts stepwise the amount of protrusion of at least one of the plurality of feet, and a second adjuster that infinitely and finely adjusts the amount of protrusion of at least one of the plurality of feet. The position of a projection image of the projector can be easily and speedily adjusted by coarsely adjusting the amount of protrusion of the foot by the first adjuster, and then making fine adjustment by the second adjuster.

A light-source lamp unit,includes a light-source lamp unit,detachably mounted, and CPU,constituting drive and control means for the light-source lamp unit. CPU,senses the lamp information borne by lamp-information storing block,in the light-source lamp unit,, about a lamp power rating, lamp life and whether a lamp is new or not, and starts counting operation time when the lamp is lit. CPU,compares the lamp life sensed and the operation time count, and forces the lamp to extinguish when the life of the light-source lamp expires. Prior to this action, CPU,gives a warning display at a time that is earlier than the life expiration of the lamp by a fixed duration of time, to warn that a lamp replacement is needed. Since the lamp-information storing block,in the light-source lamp unit,stores the information about the lamp type and characteristics of the lamp, the light-source device,can properly drive the lamp to light it and determine the lamp life even when a light-source lamp unit of a different type is used.

Light-source lamp unit, light-source device and projection-type display apparatus and method of use

A projection display device capable of improving cooling efficiency of the power unit includes a light source lamp unit, a projection lens unit, an exhaust fan provided near the light source lamp unit for ventilating an outer case, and a ventilating path provided inside the power unit. A suction fan is provided at the inlet of the ventilating path which is connected to the cooling air intake port through a duct cover to directly conduct fresh air into the ventilating path. Because the interior of the power unit is cooled by fresh air which is cooler than the air inside the outer case, cooling efficiency is enhanced.

Growing community of inventors

Suwa, Japan

Kiyoshi Miyashita