Abstract: A shaft has a hole that extends radially outward from an inner portion and opens in an outer peripheral surface. An opening of the hole has an outer shape which has a first curvature and a second curvature that is smaller than the first curvature when viewed in a radial direction of the shaft. The hole has, in the radial direction of the shaft, an outer hole portion that extends radially inward from an open end while maintaining the outer shape, a tubular inner hole portion that has a smaller hole diameter than the outer hole portion, and a diameter reduction portion in which the diameter is reduced from the outer hole portion towards the inner hole portion. The outer hole portion, the diameter reduction portion, and the inner hole portion are formed so as to be arranged in this order from the radially outer side.

Abstract: An analysis method using a finite element method includes: selecting an analysis domain to be analyzed; dividing the analysis domain into elements as calculation objects; creating a matrix of each element; integrating a general function term as a product of a Galerkin weight function and a general function; creating simultaneous equations, based on the sum of matrices of respective elements and the sum of values obtained by integrating the general function term, and obtaining a numerical solution from the simultaneous equations. In integrating the general function term, the concept of a nodal domain defined based on a result of discretization of a second-order differential term according to a Galerkin finite element method is introduced, and the general function term using a typical value of the element is integrated.

Abstract: There is disclosed a projector which supplies air cooled by a cooling unit to an optical element group, whereby the occurrence of dew condensation is prevented. The projector includes a cooling apparatus 11 disposed in a main body 1 and functioning as the cooling unit; a sealed or substantially sealed duct 30 through which cold air cooled by a cooler 18 of the cooling apparatus 11 is circulated and supplied to an optical element group 5 to cool the optical element group; an outside air introduction port 32 and an air discharge port 33 which function as a ventilation unit for introducing outside air into this duct 30 to discharge the air from the duct 30, dampers 34 and 35 for opening and closing these ports; and a controller C functioning as a control unit for controlling the dampers 34 and 35 to execute a ventilating operation in the duct 30.

Abstract: A projection system includes a screen, a projection display apparatus for projecting a video image on the screen, and a mount base provided below a projection surface of the screen, for carrying a subject on its upper surface. The projection display apparatus is mechanically coupled to the screen such that video image light from the projection display apparatus is displayed on the screen. Projection display apparatus includes a light source, an imaging portion including the upper surface of the mount base at least in an imaging area, a light modulation portion for modulating light from the light source to generate the video image light based on an input video image or a video image picked up by the imaging portion, and a projection portion for projecting the video image light generated by the light modulation portion.

Abstract: A lens array wheel 4 receives light irradiated in a direction parallel to its rotation axis, to cyclically deflect the light. On each of liquid crystal display panels 7R, 7G, and 7B, the light is circularly scrolled, the effect of substantial intermittent illumination is produced, and hold blurring is reduced. A panel driver 15 starts to feed a pixel-driving signal in the succeeding frame to a pixel existing at a position, through which an illuminating area passes, on each of the liquid crystal display panels 7R, 7G, and 7B.

Abstract: There are provided hue detecting means for detecting a hue component for each pixel from a first color difference signal R?Y and a second color difference signal B?Y, and gain controlling means for controlling for each pixel a gain for arbitrarily selected one of or an arbitrary combination of a luminance signal, a first color difference signal R?Y, and a second color difference signal B?Y depending on the detected hue component for each pixel.

Abstract: In a projection type video display apparatus comprising means for circularly scrolling and irradiating irradiated light in a direction perpendicular to the line direction on a hold-type display panel, a projection type video display apparatus comprises means for varying overdrive in conformity with the timing of irradiation of the irradiated light.

Abstract: There is provided parallax correction means for correcting a parallax for each area calculated by parallax calculation means in accordance with the magnitude of a motion vector for the area detected by motion vector detection means in order to prevent the three-dimensional effect of a conversion video from greatly differing depending on an input video when the MTD method and the CID method are simultaneously used. When a depth estimate is converted into a parallax, the depth estimate is subjected to distance scale conversion in order to suppress the distortion of the conversion image, to find a tentative target phase for each parallax calculation area, and a dynamic range in which a phase difference between the parallax calculation areas is within a distortion allowable range is searched for and is subjected to distance scale conversion, to find a tentative target phase, which operations are repeated.

Abstract: In a telecine converting method for converting a video in a movie film composed of 24 frames per second into a video signal composed of 60 frames per second, a telecine converting method is characterized in that in order that respective integration values of display time periods of frame videos in the movie film become equal after the telecine conversion, used as a video in the predetermined frame after the conversion is an interpolated video obtained by interpolating the frame videos ahead of and behind the video in the movie film.

Abstract: A lens array wheel 4 receives light irradiated in a direction parallel to its rotation axis, to cyclically deflect the light. On each of liquid crystal display panels 7R, 7G, and 7B, the light is circularly scrolled, the effect of substantial intermittent illumination is produced, and hold blurring is reduced. A panel driver 15 starts to feed a pixel-driving signal in the succeeding frame to a pixel existing at a position, through which an illuminating area passes, on each of the liquid crystal display panels 7R, 7G, and 7B.

Abstract: In a projection type video display apparatus comprising means for circularly scrolling and irradiating irradiated light in a direction perpendicular to the line direction on a hold-type display panel, a projection type video display apparatus comprises means for varying overdrive in conformity with the timing of irradiation of the irradiated light.

Abstract: In a telecine converting method for converting a video in a movie film composed of 24 frames per second into a video signal composed of 60 frames per second, a telecine converting method is characterized in that in order that respective integration values of display time periods of frame videos in the movie film become equal after the telecine conversion, used as a video in the predetermined frame after the conversion is an interpolated video obtained by interpolating the frame videos ahead of and behind the video in the movie film.

Abstract: There are provided hue detecting means for detecting a hue component for each pixel from a first color difference signal R-Y and a second color difference signal B-Y, and gain controlling means for controlling for each pixel a gain for arbitrarily selected one of or an arbitrary combination of a luminance signal, a first color difference signal R-Y, and a second color difference signal B-Y depending on the detected hue component for each pixel.

Abstract: An abnormality detection apparatus for detecting an event where a monitored object in a room has lapsed into an abnormal state. The apparatus includes an image pickup system for picking up an image of a scene in the room, and feature-quantity extraction devices for extracting an image feature quantity from the image picked up by the image pickup devices. The apparatus also includes judgment devices for determining whether the monitored object in the room has lapsed into the abnormal state or not based on the time-variations of the image feature quantity extracted by the feature-quantity extraction devices, and outputting an alarm that responds to the determination of the occurrence of the abnormal state.

Abstract: A video camera including an optical zoom mechanism and an electronic zoom circuit which is used at a time that a magnification of the optical zoom mechanism reaches a limit thereof or a time that a picture stabilization is to be performed. If a magnification of an electronic zoom is smaller than “1.2” at a timing when a stabilization switch is turned-on, a microcomputer not only gradually increases an electronic zoom magnification up to “1.2” and but also gradually decreases an optical zoom magnification. If the magnification of the electronic zoom is smaller than “1.2” at a timing when the stabilization switch is turned-off, the microcomputer gradually decreases the electronic zoom magnification to an electronic zoom magnification of a timing when the stabilization switch is turned-on, and gradually increases the optical zoom magnification. Thus, a sudden change of a view angle due to a change of the electronic zoom magnification is suppressed.

Abstract: A stereo-graphic system has an optical apparatus, an imaging apparatus and a recording and reproducing apparatus. The optical apparatus has a first optical device for providing right eye picture information which has a first direction. The optical apparatus also has a second optical device for providing left eye picture information which has a second direction which is coincident with the first direction. The right eye picture information and the left eye picture information are compressed along the first direction. The imaging apparatus has an imaging device which has an imaging area for providing an output image signal. The imaging area has a right region and a left region. A focusing device in the imaging apparatus focuses the right eye picture information and the left eye picture information on the right region and the left region respectively. The recording and reproducing apparatus has a recording medium, a recording device and a reproducing device.

Abstract: A method of converting two-dimensional images into three-dimensional images by producing from a two-dimensional image signal a first image signal which forms a basis and a second image signal delayed by a predetermined number of fields from the first image signal and taking one of the signals as a left eye image signal and the other as a right eye image signal. It is judged whether or not a scene represented by the two-dimensional image signal is changed. When it is judged that the scene is changed, delay indicating how many fields are there from a field corresponding to the first image signal to a field corresponding to the second image signal is set to a predetermined value, for example, zero.

Abstract: A left eye image signal and a right eye image signal which constitute a three-dimensional image are produced from a two-dimensional image signal. The horizontal phase of the produced left eye image signal is shifted, and the horizontal phase of the produced right eye image signal is shifted. Character signals are respectively mixed with the left eye image signal and the right eye image signal. A composite image comprising the three-dimensional image and the character signal is displayed on the basis of the left eye image signal with which the character signal is mixed and the right eye image signal with which the character signal is mixed.

Abstract: In the present invention, two-dimensional images are converted into three-dimensional images by producing from a two-dimensional image signal a main image signal and a sub-image signal delayed from the main image signal. A field delay indicating how many fields are there from a field corresponding to the main image signal to a field corresponding to the sub-image signal is changed depending on the speed of the horizontal movement of the main image signal. The upper limit of the field delay is determined on the basis of vertical components of motion vectors detected from the main image signal. The field delay is so determined that it is not more than the determined upper limit.

Abstract: A stereo-graphic apparatus has first and second imaging devices to provide a first image and a second image, respectively. The first and the second imaging device are spaced from each other to define a predetermined convergence angle. A distance detecting apparatus detects distance from the first and the second imaging device to an object for imaging. A first electric zooming apparatus receives a signal from the first imaging device and extracts image data of a predetermined area from the first image. A second electric zooming apparatus receives a signal from the second imaging device and extracts image data of a predetermined area of image. A control device controls the extraction of image data according to the distance information. According to the distance information, the extracting area is moved so that the focused object is located on the center of each of the provided images. As a result, the convergence angel is substantially changed according to the distance between the object and the imaging device.