Abstract: A vibration gyro having high bias stability, and a method of using the gyro for obtaining a precise angular velocity signal by correcting the bias. The gyro has: a drive signal generating part configured to generate a multiplexed drive signal; first and second demodulation circuits configured to generate first and second demodulation signals, respectively; first and second control circuits configured to generate first and second feedback amplitude signals, respectively; a feedback signal generating part configured to generate a first multiplexed feedback signal by multiplexing a first feedback signal obtained by modulating the first feedback amplitude signal at the first frequency, and at least one second feedback signal obtained by modulating the second feedback amplitude signal at the at least one second frequency; and a subtracter configured to output an angular velocity signal by subtracting the second feedback amplitude signal from the first feedback amplitude signal.

Abstract: A surgical simulation model generating method which includes a first process in which a computing unit acquires geometrical information of an organ from a medical image stored in a storage unit, including an image of the organ, and generates volume data for the organ; a second process in which, after the first process, the computing unit forms nodal points by meshing the organ represented by the generated volume data; a third process in which the computing unit generates a simulated membrane that covers the organ represented by the volume data meshed in the second process; and a fourth process in which the computing unit generates a simulated organ by drawing an imaginary line so as to extend from each nodal point formed on a surface of the organ represented by the volume data meshed in the second process in a direction that intersects the simulated membrane.

Abstract: A surgical simulation model generating method includes: a first process in which a computing unit acquires geometrical information of an organ from a medical image stored in a storage unit, including an image of the organ, and generates volume data for the organ; a second process in which, after the first process, the computing unit forms nodal points by meshing the organ represented by the generated volume data; a third process in which the computing unit generates a simulated membrane that covers the organ represented by the volume data meshed in the second process; and a fourth process in which the computing unit generates a simulated organ by drawing an imaginary line so as to extend from each nodal point formed on a surface of the organ represented by the volume data meshed in the second process in a direction that intersects the simulated membrane and thereby forming a membrane nodal point at a point where the imaginary line intersects the simulated membrane generated in the third process, and by arrang

Abstract: A vibration gyro having a structure for canceling a quadrature error generated by structural asymmetricity due to production tolerance and a means for correcting a bias value when an angular velocity is zero. In order to apply a counter torque to a sense mass for canceling the quadrature error, left correction comb electrodes are fixed to a substrate adjacent to a left drive mass, and comb electrodes opposed to the correction comb electrodes are arranged on an inner portion of a frame member which constitutes the left drive mass. By applying DC voltage to the correction electrodes, electrostatic force, for canceling the leakage rotational displacement of the sense mass generated when the input angular velocity is zero, is generated.

Abstract: In order to combine N (N?3) pieces of image data including not only color data but also distance data and opacity data, when images that are to be combined are input, distance data of each pixel in each image data is sorted in parallel for each pixel data at identical coordinates in a plurality of images so as to determine the distance relationship as the order relationship concerning the input image data. On the other hand, color data and opacity data of each input image that are to be combined are stored in a pixel-by-pixel manner. The color data and opacity data stored in the storing step are read and rearranged in parallel by using the order relationship concerning the input image data obtained in the sorting step so that the color data and opacity data are arranged in the order relationship corresponding to the input images. The color data and opacity data rearranged in the rearranging step are combined, in an alpha blending technique, in parallel.

Abstract: The invention is directed to the provision of a method for generating a model for a preoperative simulation, wherein the method includes: a first step of constructing volume data for necessary organs by acquiring geometrical information from a medical image; a second step of manipulating the volume data to reposition and reorient an operator-designated organ to achieve a position and orientation appropriate for a surgical operation; a third step of generating a blood-vessel model, depicting a blood vessel to be joined to the designated organ, so as to match the position and orientation of the designated organ; a fourth step of generating volume data by forming a fat model of prescribed thickness around a prescribed organ contained in the earlier constructed volume data, after the blood-vessel model has been joined to the designated organ; a fifth step of thereafter meshing the organ represented by the generated volume data; a sixth step of manipulating a template model of a prescribed shape by using a templat

Abstract: A vibration gyro having a structure for canceling a quadrature error generated by structural asymmetricity due to production tolerance and a means for correcting a bias value when an angular velocity is zero. In order to apply a counter torque to a sense mass for canceling the quadrature error, left correction comb electrodes are fixed to a substrate adjacent to a left drive mass, and comb electrodes opposed to the correction comb electrodes are arranged on an inner portion of a frame member which constitutes the left drive mass. By applying DC voltage to the correction electrodes, electrostatic force, for canceling the leakage rotational displacement of the sense mass generated when the input angular velocity is zero, is generated.

Abstract: Medical image data is utilized, physical values are assigned to body parts based on image information, and the target organs are separated from the image data to prepare a 3D biodata model to thereby realize a data model unique to a patient, having an internal structure, and enabling dynamic simulation of a live body. The same target part of a body is captured by CT and MRI to obtain medical images. Sets of pairs of CT images and MRI images are set, a plurality of features showing the same locations are selected and set from the sets of CT images and MRI images, a conversion coefficient between the CT images and MRI images is obtained, and this conversion coefficient is used to rearrange the MRI images by projection transforms and linear interpolation, combine them with the contours of the CT images, and correct their positions in the contours. Further, the images are used to prepare a 3D data model.

Abstract: A surgical simulation model generating method includes: a first process in which a computing unit acquires geometrical information of an organ from a medical image stored in a storage unit, including an image of the organ, and generates volume data for the organ; a second process in which, after the first process, the computing unit forms nodal points by meshing the organ represented by the generated volume data; a third process in which the computing unit generates a simulated membrane that covers the organ represented by the volume data meshed in the second process; and a fourth process in which the computing unit generates a simulated organ by drawing an imaginary line so as to extend from each nodal point formed on a surface of the organ represented by the volume data meshed in the second process in a direction that intersects the simulated membrane and thereby forming a membrane nodal point at a point where the imaginary line intersects the simulated membrane generated in the third process, and by arrang

Abstract: Medical image data is utilized, physical values are assigned to body parts based on image information, and the target organs are separated from the image data to prepare a 3D biodata model to thereby realize a data model unique to a patient, having an internal structure, and enabling dynamic simulation of a live body. The same target part of a body is captured by CT and MRI to obtain medical images. Sets of pairs of CT images and MRI images are set, a plurality of features showing the same locations are selected and set from the sets of CT images and MRI images, a conversion coefficient between the CT images and MRI images is obtained, and this conversion coefficient is used to rearrange the MRI images by projection transforms and linear interpolation, combine them with the contours of the CT images, and correct their positions in the contours. Further, the images are used to prepare a 3D data model.

Abstract: The invention provides a simulation system and method having an image generating function that can visualize the behavior of an object of analysis in real time. The behavior of the object of analysis is divided into a plurality of subspaces, and is visualized as subspace images by an MP method by performing simulation computations for the respective subspaces at nodes 431 to 438. The subspace images are sent to a pipelined composer 44 where the images are blended together by considering occlusion relationships determined by reference to a viewpoint by a BSP method. The resulting composited image is corrected for distortion at a server 40 by using a texture mapping function, and is displayed on a display apparatus 41.

Abstract: The present invention provides an image composing apparatus that can composite images at high speed and in which the apparatus configuration can be easily expanded as the number of images to be composed increases. Sub-images generated by node computers are synchronized each other by a synchronizing section. Then, each pair of synchronized sub-image data is composed into a single sub-image in a first-layer image composing section, comprising a plurality of image composing circuits each for composing two sub-images, and the resulting sub-images are composed iteratively through a second-layer image composing section, a third-layer image composing section, and so on, that have the same configuration as the first-layer image composing section.

Abstract: In order to combine N (N≧3) pieces of image data including not only color data but also distance data and opacity data, when images that are to be combined are input, distance data of each pixel in each image data is sorted in parallel for each pixel data at identical coordinates in a plurality of images so as to determine the distance relationship as the order relationship concerning the input image data. On the other hand, color data and opacity data of each input image that are to be combined are stored in a pixel-by-pixel manner. The color data and opacity data stored in the storing step are read and rearranged in parallel by using the order relationship concerning the input image data obtained in the sorting step so that the color data and opacity data are arranged in the order relationship corresponding to the input images. The color data and opacity data rearranged in the rearranging step are combined, in an alpha blending technique, in parallel.

Abstract: An apparatus for measuring the dynamic characteristics of the vehicle wheel alignment in non-contact fashion with high accuracy is disclosed. A laser light source (4) emits a laser beam of a predetermined geometric pattern toward the wheel side surface. A laser beam control device (6) controls the width of the laser beam in such a manner as to be radiated only in a predetermined range of the wheel side surface. Two laser light sources (120), (121) emit non-parallel laser beams. A photdetecting device (122) receives the two laser beams and converts them to two corresponding image data. A processing unit calculates the distance between the two images based on the two image data and calculates the wheel alignment based on the same distance.

Abstract: An information service system comprises a portable unit carried by the user and an identification tag for supplying information on the present position of the user or the place where the user is approaching. The identification tag transmits the transmission information including the specified information stored in advance using infrared light or the like. The portable unit that has entered a predetermined range of the identification tag, upon receipt of the transmission information, demodulates the specified information and outputs the specified information from an information output unit such as a speaker. By the way, in the case where the specified information is an identification tag ID for specifying the particular identification tag, the portable unit selects the guide information corresponding to the identification tag ID through the portable unit controller and outputs it from the information output unit.

Abstract: A relative angle detecting system permitting a wider range of detectable angles and offering a small detection error by using polarization and a virtual reality providing system using the same are disclosed. The relative angle detecting system includes a light source having a given polarizing direction and a light reception unit in which a plurality of polarization filters having different polarizing directions other than 90 degree and a plurality of light-receiving devices for receiving light passing through the filters are incorporated, and a relative angle is calculated on the basis of a combination of strengths of output signals of the plurality of light-receiving devices.

Abstract: A free weight unit with a spinning mass element, which comprises a casing for accommodating the spinning mass element in a rotatable manner about a rotation axis, and also accommodating an electric motor for rotationally driving the mass element and a battery for the electric motor. This free weight unit is designed to be used effectively for training, rehabilitating or physical exercising of the human body, and the-casing generally has a relatively large dimension sufficient to accommodate a relatively large mass element, which may be difficult to be gripped directly by hand. In this free weight unit, a certain vector of the precessional output torque is generated due to an input torque applied to the spinning mass element rotating about the rotation axis, by operating a selected one of the two elongated sections of the shiftable member to turn about a certain input axis extending in a direction different from a direction of the rotation axis.

Abstract: A measuring apparatus is provided in one of two objects moving relatively to each other. The apparatus includes a circuit for effecting a direct spread modulation with respect to a transmission carrier signal using modulation codes; an antenna unit for transmitting the modulated carrier signal toward the other of the two objects and for receiving a reflection wave therefrom; a circuit for demodulating the received reflection wave signal using the transmission carrier signal; a circuit for making correlation between the demodulated output signal and a signal having the same code as that of the modulation code and having a phase delayed by a predetermined time; a unit for extracting a Doppler frequency component contained in a signal which has been propagated through a propagation path existing in a specified distance range; and a circuit for properly processing the extracted Doppler frequency component.

Abstract: A speed measuring apparatus includes: a modulation circuit for carrying out a direct spread modulation with respect to a transmission carrier signal using coded two-phase random signals; an antenna unit for transmitting the modulated transmission carrier signal as a radio-wave toward an object and for receiving a reflected wave from the object; a demodulation circuit for demodulating a signal corresponding to the received reflected wave using the transmission carrier signal, to thereby generate intermediate frequency signals; a correlation circuit for making correlation between the intermediate frequency signals and signals each having the same code as that of the coded two-phase random signal and having a phase delayed by a predetermined time; a Doppler detecting unit for extracting from an output signal of the correlation circuit a Doppler frequency component contained in a signal which has been propagated by way of a propagation path existing in a specified distance range, and for generating speed informat