Abstract: A network system includes: a plurality of terminals configured to hold a chat and a video conference; and a server configured to cause a candidate for a file of a document to be selected on a screen for the chat at one terminal of the plurality of terminals and to launch the video conference with the document ready to be referenced when a first button for starting the video conference is pressed at the one terminal.

Abstract: In order to return an appropriate response even in a case where a plurality of utterances are successively made, provided are: a pattern identifying section (42) for, in a case where a target utterance with respect to which a phrase is to be determined as a response is accepted, identifying a handling status of another utterance which differs from the target utterance; and a phrase generating section (43) for determining, as a phrase responding to the target utterance, a phrase in accordance with the handling status identified by the pattern identifying section.

Abstract: In order to provide a natural interaction with a speaker, an interactive robot (100) of the present invention includes: a storage section (12); an input management section (21) that accepts an input voice by storing the input voice in the storage section (12) in association with attribute information; a phrase output section (23) that causes a phrase corresponding to the voice to be presented; and an output necessity determination section (22) that determines, in a case where a second voice is inputted before a first phrase corresponding to a first voice is presented, in accordance with at least one piece of attribute information, whether or not the first phrase needs to be presented.

Abstract: [PROBLEMS] A method of producing a precision, low-cost resin molded article capable of improving a light utilizing efficiency and reducing a stray light caused by a light that enters a rise surface and is reflected off a reflection surface in an abnormal direction or refracted.

Abstract: A liquid crystal display unit wherein a first light-refracting means, a second light-refracting means, a first light-reflecting means and a third light-refracting means are disposed in a light path of from a light source means to a liquid crystal panel means, and wherein light-converging power (reciprocal of focal length) of the third light-refracting means is selected to be algebraically small in its outer circumferential portion and large in its inner circumferential portion, so that it is possible to improve the efficiency of use of light of the liquid crystal display unit, the relative corner illuminance, the contrast ratio and the image quality.

Abstract: An electronic calculator with a graph displaying function includes: an input device having various function keys for inputting data and performing various functions; a display device for displaying one of screen images including a numerical value image, a numerical formula image, or a graph image inputted from the input device; a first storage device for storing a control program; a second storage device for if storing at least one of the screen images; and a control device for controlling each of the input device, the display device, the first storage device, and the second storage device by means of the control program, wherein the control device allows a screen image displayed successively on the display device to be stored in the second storage device by a screen storage operation of the input device, and allows each screen image to be successively read out and displayed on the display device in an order of storage in the second storage device by a screen display operation of the input device.

Abstract: White light is input to light diffracting means so composed as to have a structure including macro prisms combined with a lenticular structure and include diffraction gratings at a microscopic level. As the height (h(x)) of unit steps of said diffraction grating is modulated at every period of arranged pixels, the output diffracted light is decomposed into three primary colors, and guided with highly accurate matching to the three respective primary color pixels of a liquid crystal panel means. In the pitch modulation type diffraction grating of the prior art, it was basically impossible to avoid the defect that the converged positions of a red light ray and a blue light ray deviate about 30%.

Abstract: A rear projection type display system with a transmissive screen. A transparent reinforcing plate is coupled to a lenticular sheet of the screen on the light output side by a connective member to broaden the horizontal diverging angle by 60 degrees or more to the right and left sides. The duty factor of a black stripe formed on the lenticular sheet is set to 60% or more so improve the contrast of an image. The diverging angle at each point of a vertically-diffusing lens for diverging light in the vertical direction is modulated in accordance with the height of each point to offer a proper visual angle range in the vertical direction.

Abstract: A liquid crystal display has a light source unit and a liquid crystal panel unit, and includes a unit for emitting rays having wavelengths corresponding to the primary colors in respective three directions, a lens group unit provided on the light incident side of the liquid crystal panel unit; and a lens group unit provided on the light emitting side of the liquid crystal panel unit and having a focal plane disposed outside the liquid crystal panel unit. Angles of propagation directions of emitted rays of the primary colors are made different from one another by the primary-colors three direction emitting unit, the rays of the primary colors are introduced into respective picture elements corresponding to the primary colors by the panel-light incident side lens group unit, and the propagation directions of the emitted rays of the primary colors are made to substantially coincide with one another by the panel-light emitting side lens group unit.

Abstract: A large screen display comprising an image signal source such as a computer, an original image generator, a light-transmission screen, an on-screen pointing-position detecting means, and a light-pen built in an infra-red-ray emitting modulating means, wherein infra-red rays which are modulated by pressing force generated when the light-pen is pressed against the screen by an operator are emitted and the infrared rays are detected and amplified by an infrared-ray detector and demodulated by a demodulating means and then inputted to the image signal source, so that the tone and thickness of each stroke of a figure to be drawn and displayed can be displayed.

Abstract: Disclosed is a projection type liquid crystal display device. The device comprises a light source; collimator elements; a liquid crystal panel which produces an image; a light path wall which defines a closed space and which surrounds and supports at least one of the collimator elements and the liquid crystal panel; a projection lens; and a screen. The light path wall is provided with a heat dissipation promoter on the outer surface thereof.

Abstract: White light is input to light diffracting means so composed as to have a structure including macro prisms combined with a lenticular structure and include diffraction gratings at a microscopic level. As the height (h(x)) of unit steps of said diffraction grating is modulated at every period of arranged pixels, the output diffracted light is decomposed into three primary colors, and guided with highly accurate matching to the three respective primary color pixels of a liquid crystal panel means. In the pitch modulation type diffraction grating of the prior art, it was basically impossible to avoid the defect that the converged positions of a red light ray and a blue light ray deviate about 30%.

Abstract: A liquid crystal projection display capable of functioning at a high light capturing efficiency and a high relative corner illuminance comprises a light source means including a light source, a liquid crystal panel means, a projection lens means and a screen means. A liquid lens formed by sealing a liquid in a space between opposite transparent members is disposed near the light source or the real image of the light source to enhance the relative corner illuminance without reducing the light capturing efficiency by multiplying the angle of divergence of light rays emitted by the light source by the reciprocal of the refractive index of the liquid. A first optical system disposed on the entrance side of the liquid crystal panel is provided with a relative corner illuminance enhancing means comprising a first light converging means disposed relatively near to the light source means, and a second light converging means disposed relatively remote from the light source means.

Abstract: A CRT display device capable of displaying a signal from the existing image signal source, in which a vertical frequency is approximately fixed and a horizontal frequency is widely distributed beyond a ratio of 3:1, on one image screen. The CRT display device includes a scan converter unit and a display unit. The scan converter unit includes an output horizontal frequency unifying circuit, a horizontal blanking period ratio converting circuit, a vertical frequency converting unit and a vertical blanking period ratio converting circuit. The display unit includes a vertical deflection circuit and a circuit for correcting a vertical S-shaped distortion. In a phase synchronous circuit, a lock-out detector is connected to an output of a three state output digital phase detector, and on the basis of an output thereof, a switch is subjected to the "ON"/"OFF" control.

Abstract: A reciprocative deflection type CRT display apparatus includes a reciprocative horizontal deflection circuit formed by a horizontal deflecting direction change-over circuit, a 1/2-frequency divider, a horizontal deflecting coil and an S-like distortion correcting capacitor. The horizontal deflecting direction changeover circuit connects one end of the horizontal deflecting coil to a power source and the ground alternatively upon every horizontal scanning period, whereby horizontal deflection is alternately changed over between forward and backward directions without need for generating a flyback pulse of large amplitude. Power loss involved in operation of a horizontal output switching element constituting the horizontal deflection switching circuit is reduced to about 1/10 or less when compared with the conventional CRT.

Abstract: A liquid crystal display including a light source unit and a liquid crystal panel unit. The liquid crystal panel unit includes picture elements corresponding to three primary colors.

Abstract: A rear projection type display system with a transmissive screen. A transparent reinforcing plate is coupled to a lenticular sheet of the screen on the light output side by a connective member to broaden the horizontal diverging angle by 60 degrees or more to the right and left sides. The duty factor of a black stripe formed on the lenticular sheet is set to 60% or more so improve the contrast of an image. The diverging angle at each point of a vertically-diffusing lens for diverging light in the vertical direction is modulated in accordance with the height of each point to offer a proper visual angle range in the vertical direction.

Abstract: A single-tube type projection display with high light efficiency includes phosphors of three primary colors formed on upper, middle and lower portions of a faceplate of a CRT. Images of three colors are projected on the phosphor layers, and a color picture is obtained by overlapping the three color images on the screen by the projection lenses.

Abstract: A cathode ray tube display in which a signal for detection of a cathode current is inserted into a part of the vertical blanking period of the video signal to be displayed, a cathode current corresponding to the signal for detection is detected, and a cathode voltage or a grid voltage is negative feedback controlled so that the detected cathode current becomes constant, thereby stabilizing the cathode current. The display has a local overscan circuit for executing a vertical scan on the screen with a width larger than a predetermined scan width only at a timing of the cathode current detecting signal inserted for a vertical blanking period, and even in the case where an underscan system to scan by a width smaller than a predetermined display screen width is used as a scan system of the screen display. The invention prevents a harmful visible display image by the cathode current detecting signal appears on the screen.

Abstract: A video display system that includes a housing has arranged thereon a plurality of video input terminals for receiving a plurality of video signals having different scanning frequencies. An expansion/compression processing circuit replaceably mounted on the housing receives and expands/compresses the plurality of video signals and produces at least one video signal expanded/compressed in synchronism with a sync signal selected by a sync switching circuit. At least one of the video signals is synthesized with another video signal, and the synthesized video signal is produced by a video signal synthesis circuit. A video signal from the video signal synthesis circuit is used to generate a video display signal in synchronism with the sync signal. This video display signal is applied to a display. At least one such video display system, an AV controller, a central control console and a lecture table are combined to realize a screen display system.