Patents by Inventor Shinji Takeuchi
Shinji Takeuchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20060252988Abstract: An endoscope spectral image system is provided and includes: an image recording apparatus for recording a color image provided by using a scope; and a processor apparatus, in which spectroscopic characteristic information including a spectroscopic characteristic of CCD is output from the processor apparatus to the image recording apparatus along with color image data. At the image recording apparatus, matrix data in correspondence with the spectroscopic characteristic information is selected to be read from a plurality of matrix data stored in a memory, matrix operation by the matrix data and color image data is carried out at a spectral image-forming circuit, and a spectral image formed by signals of arbitrarily selected wavelength regions is provided.Type: ApplicationFiled: March 17, 2006Publication date: November 9, 2006Inventors: Daisuke Ayame, Kazunori Abe, Shinji Takeuchi
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Publication number: 20060253036Abstract: An endoscope system apparatus, which facilitate to carry out observation and diagnosis of a fine structure of an object and enable to carry out efficient recording operation by attaching wavelength information in recording a spectral image, is provided. The endoscope system apparatus has a color space conversion processing circuit for carrying out matrix operation by data of an original image and matrix data and forming a spectral image including signals of selected wavelength regions. By one time operation of a recording operation switch, data of the spectral images is transmitted to an image recording apparatus along with data of the original image, and the spectral images are communicated by adding wavelength information of the signals thereto. Further, the spectral images are displayed on a monitor along with the original image.Type: ApplicationFiled: March 17, 2006Publication date: November 9, 2006Inventors: Shinji Takeuchi, Kazunori Abe, Daisuke Ayame
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Publication number: 20060235277Abstract: An endoscope system has an insertion portion and a control portion connected to a base end portion of the insertion portion. An illumination system includes a light guide having a front end positioned near the front end of the insertion portion and a rear end positioned rearward of the base end of the insertion portion, phosphors disposed in the light guide toward the front end thereof and an illumination light source which is positioned toward the rear end of the light guide and emits stimulating light exciting the phosphors.Type: ApplicationFiled: April 19, 2006Publication date: October 19, 2006Inventors: Kazunobu Ohkubo, Masami Hatori, Shinji Takeuchi, Tadashi Ando
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Patent number: 7123288Abstract: The invention provides an endoscope having a scope that takes an image enlarged by driving a movable lens of an optical zoom mechanism by a CCD and displays an image of an object to be observed, wherein a multiplier multiplies RGB color signals by a coefficient set in view of light distribution of illumination light depending on focusing distances of the movable lens, thus eliminating uneven brightness resulting from varying light distribution depending on the focusing distances in enlargement photography. A red component cut filter for cutting a long wavelength side in a red band of the illumination light is provided in a light source unit to improve redness. Further, a coefficient for averaging a brightness signal for a predetermined number of pixels for each horizontal line is calculated, and this coefficient calculation may eliminate unevenness.Type: GrantFiled: September 27, 2002Date of Patent: October 17, 2006Assignee: Fujinon CorporationInventors: Kazunori Abe, Mitsuru Higuchi, Daisuke Ayame, Shinji Takeuchi
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Publication number: 20060211915Abstract: An endoscope apparatus comprises: an endoscope comprising an imaging device that forms a color image signal of a body to be observed; a storage portion that stores matrix data regarding a wavelength range in which a spectral image is constituted; a spectral image forming circuit that conducts matrix calculation based on the color image signals by using the matrix data of the storage portion and forms a spectral image of a selected wavelength range; and a wavelength selecting section that selects the wavelength range of the spectral image formed by the spectral image forming circuit through a continuous changeover or a step-wise changeover.Type: ApplicationFiled: March 2, 2006Publication date: September 21, 2006Inventors: Shinji Takeuchi, Kazunori Abe, Daisuke Ayame, Mitsuru Higuchi
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Publication number: 20060197830Abstract: In an endoscope apparatus in which a scope is connected to a processor unit in a freely attachable and detachable way, the endoscope apparatus wherein matrix calculation is conducted for RGB signals formed by using CCD, a color space conversion processing circuit is provided for forming spectral images of the arbitrarily selected wavelength range. CCD characteristics identification information including types of color filters of the CCD and spectral characteristics or scope characteristics information is stored in the ROM of the scope, a plurality of matrix data corresponding to characteristics identification information is stored in the memory of the processor unit, and matrix data corresponding to the obtained characteristics information is read from the memory, thereby forming an excellent spectral image by using data suitable for characteristics of the CCD or the scope.Type: ApplicationFiled: February 17, 2006Publication date: September 7, 2006Inventors: Shinji Takeuchi, Kazunori Abe, Daisuke Ayame
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Publication number: 20060197831Abstract: An endoscope apparatus comprises: an endoscope comprising an imaging device that forms color image signals of a body to be observed; a Y/C signal processing circuit that forms brightness/color difference signals from a color image signal obtained by the imaging device; a storage portion that stores Y/C matrix data for forming a spectral image based on the brightness/color difference signals; and a Y/C spectral image forming circuit that conducts matrix calculation by the Y/C matrix data of the storage portion and the brightness/color difference signals output from the Y/C signal processing circuit and forms a spectral image of an arbitrarily selected wavelength range.Type: ApplicationFiled: February 17, 2006Publication date: September 7, 2006Inventors: Shinji Takeuchi, Kazunori Abe, Daisuke Ayame
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Publication number: 20060198551Abstract: An endoscope apparatus comprises: an endoscope comprising an imaging device that forms a color image signal of a body to be observed; a storage portion that stores matrix data for forming a spectral image based on the color image signal; a spectral image-forming circuit that conducts matrix calculation based on the color image signal by using the matrix data of the storage portion and forms at least one spectral image signal each of which corresponds to an arbitrarily selected wavelength range; and an amplifier circuit that amplifies said at least one spectral image signal formed by the spectral image-forming circuit.Type: ApplicationFiled: March 2, 2006Publication date: September 7, 2006Inventors: Kazunori Abe, Shinji Takeuchi, Daisuke Ayame
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Patent number: 7042488Abstract: In an electronic endoscope of the present invention, an edge detection circuit detects a down edge section and an up edge section of both ends of a blood vessel in a width direction based on a G signal output from an RGB color conversion circuit, an R coefficient selector and a B coefficient selector select, for example, a coefficient smaller than 1 for the detected down edge section and select, for example, a coefficient larger than 1 for the up edge section, and a multiplier multiplies an R signal and a B signal by these coefficients. As a result, both ends of the blood vessel are highlighted with a left end part expressed blackish and a right end part expressed reddish, making it possible to clearly display blood vessels in mucous membranes on a monitor.Type: GrantFiled: September 26, 2002Date of Patent: May 9, 2006Assignee: Fujinon CorporationInventors: Mitsuru Higuchi, Keiichi Negishi, Daisuke Ayame, Kazunori Abe, Shinji Takeuchi
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Patent number: 6983816Abstract: A steer-by-wire steering apparatus for a vehicle includes an elastic member couples a reaction force actuator to a steering wheel. With respect to the elastic member, a side closer to the steering wheel is referred to as a primary side, and a side closer to the reaction force actuator is referred to as a secondary side. A steering wheel position detector is located at the secondary side. Therefore, the apparatus is capable of giving a feel of a steering reaction force equivalent to an ordinary mechanically connected steering apparatus to an operator and secures stability of a control system.Type: GrantFiled: April 15, 2004Date of Patent: January 10, 2006Assignee: Toyoda Koki Kabushiki KaishaInventors: Toshihiro Takahashi, Shoji Ogawa, Shinji Takeuchi, Hiroshi Kuroyanagi, Shoji Asai
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Publication number: 20050257988Abstract: The control system of a vehicle according to the present invention controls the transmission ratio of the steering angle of a steering wheel relative to a turning angle of front wheels based on a drive force distribution ratio. Thus, the performance of the tires on the front wheels can be used to almost maximum potential, providing effective prevention of understeering. The present invention provides a steering system that limits understeering effectively.Type: ApplicationFiled: May 20, 2005Publication date: November 24, 2005Applicant: Toyoda Koki Kabushiki KaishaInventors: Takayuki Ohta, Shinji Takeuchi, Minekazu Momiyama, Hiroaki Kato, Tsuyoshi Murakami
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Patent number: 6956602Abstract: The apparatus according to the present invention includes a level adjusting circuit that increases a gain of a G (or B) signal output from a color conversion circuit, a binarization circuit that forms a binarized image from this G signal and an edge detection circuit that extracts blood vessel position signals through edge detection based on this binarized signal. Then, the apparatus extracts RGB color signals making up a blood vessel image by using the above-described blood vessel position signals, increases the gains of these blood vessel color signals and then adds the blood vessel color signals to the color signals of an original image. This allows blood vessels to be displayed in high contrast to mucous membranes, etc. Furthermore, the apparatus can also amplify the R signal and B signal by using a signal obtained by differentiating the above-described G signal as a gain signal to highlight blood vessels.Type: GrantFiled: September 26, 2002Date of Patent: October 18, 2005Assignee: Fujinon CorporationInventors: Mitsuru Higuchi, Daisuke Ayame, Kazunori Abe, Shinji Takeuchi, Keiichi Negishi
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Publication number: 20050224277Abstract: In a steering system 30, a transmission ratio R1 which is determined in dependence on the vehicle speed by reference to a transmission ratio decision map is multiplied with a first transmission ratio alteration gain g10 which is determined in dependence on the distribution of a traveling drive torque from an engine 11 to front wheels 14 and rear wheels 15, thereby to alter the ratio R1 of steering torque distribution from a steering handle 31 to the front wheels 14, whereby the variation of the steering feeling due to an increase or decrease in the distribution of the traveling drive torque to the front wheels 14 can be suppressed. Further, the transmission ratio R1 is multiplied with a second transmission ratio alteration gain g11 which is determined in dependence on the gradient of the road surface by reference to a second transmission ratio alteration map, thereby to alter the transmission ratio R1, whereby the variation of the steering feeling due to the variation of the gradient can also be suppressed.Type: ApplicationFiled: April 4, 2005Publication date: October 13, 2005Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Hiroaki Kato, Shinji Takeuchi, Minekazu Momiyama, Akihiro Ohno, Tsuyoshi Murakami
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Publication number: 20050228564Abstract: A vehicle steering apparatus for improving steering feel when changing the angle of a steered wheel with a motor. An IFS torque compensation unit includes an oversteer IFS torque compensation gain calculation unit, which obtains a larger IFS torque compensation gain as a control target element increases during oversteer control. When an oversteer state occurs, the IFS torque compensation control unit outputs a corrected gain, which is based on the IFS torque compensation gain.Type: ApplicationFiled: April 5, 2005Publication date: October 13, 2005Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Hiroaki Kato, Shinji Takeuchi
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Patent number: 6952635Abstract: The present invention is directed to a road condition estimation apparatus for estimating a road condition for use in a vehicle having a steering control unit for actuating a device mechanically independent of a manually operated steering member to steer at least a wheel of front and rear wheels. The apparatus includes an actuating signal detection unit for detecting an actuating signal for actuating the device of the steering control unit, an aligning torque estimation unit for estimating an aligning torque produced on the wheel on the basis of the actuating signal detected by the actuating signal detection unit, and a vehicle state variable detection unit for detecting a state variable of the vehicle.Type: GrantFiled: October 10, 2003Date of Patent: October 4, 2005Assignees: Aisin Seiki Kabushiki Kaisha, Toyoda Koki Kabushiki Kaisha, Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Eiichi Ono, Yuji Muragishi, Shinji Takeuchi, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
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Patent number: 6941213Abstract: The present invention is directed to a road condition estimation apparatus for estimating a road condition for use in a vehicle having steering control unit for actuating a device mechanically independent of a manually operated steering member to steer each wheel.Type: GrantFiled: October 10, 2003Date of Patent: September 6, 2005Assignees: Aisin Seiki Kabushiki Kaisha, Toyoda Koki Kabushiki Kaisha, Advics Co., Ltd.Inventors: Yoshiyuki Yasui, Eiichi Ono, Yuji Muragishi, Shinji Takeuchi, Minekazu Momiyama, Hiroaki Kato, Yuzo Imoto, Hiroaki Aizawa
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Patent number: 6932762Abstract: An endoscope includes a red component cut optical filter having a characteristic that a spectral transmittance becomes half at 630 nm and zero at 670 nm, for example between a light source and an infrared cut filter, to remove a long wavelength component mainly in a red band of illumination light. This restrains scattering of light on a long wavelength side of red light, and allows taking images of mucosa, blood vessels, and other tissue in good contrast in an object to be observed and satisfactorily observing them on a monitor. Further, reduction in light amount resulting from cutting a red component with the filter is eliminated by light amount control with an aperture and gain control of a signal.Type: GrantFiled: September 17, 2002Date of Patent: August 23, 2005Assignee: Fujinon CorporationInventors: Daisuke Ayame, Mitsuru Higuchi, Kazunori Abe, Shinji Takeuchi
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Publication number: 20050159866Abstract: A first system and a second system include a first motor and a second motor for driving a steering mechanism in dependence on the rotational manipulation of a steering wheel. A first ECU and a second ECU mutually monitor abnormalities of the systems each to stop an abnormal system. When the respective systems are normal, the first ECU and the second ECU drivingly control the first motor and the second motor of their own systems to drive the steering mechanism by cooperation of the respective motors. When either one of the both systems is abnormal, the ECU of the other system solely drivingly controls the motor of its own system thereby to drive the steering mechanism. Thus, it can be realized to make the systems low in cost irrespective of the provision of the plural systems.Type: ApplicationFiled: June 12, 2003Publication date: July 21, 2005Applicant: TOYODA KOKI KABUSHIKE KAISHAInventors: Shinji Takeuchi, Jiro Nakano, Kenichi Fukumura, Yutaka Mori
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Publication number: 20050146638Abstract: In an electronic endoscope to image a light illumined observed object by a CCD, openings R1 to R3 Of fixed apertures set in a scope are shaped approximately similar to the pixel shape of the CCD. For example, in case the pixel is rectangular, a rectangular opening R1 similar to this pixel is set. Further, this aperture may be set with openings E1 to E3 with its angle portion arc-shaped, and an oval opening E1 is set for the rectangular pixel. According to this approach, since the confused rectangular shape of the aperture opening matches the pixel shape, a light flux can be allowed to effectively enter from the aperture, thereby increasing the light quantity of a pixel unit. Further, a MTF characteristic in this case does not change with no lowering of the resolution caused.Type: ApplicationFiled: December 28, 2004Publication date: July 7, 2005Applicant: Fujinon CorporationInventor: Shinji Takeuchi
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Publication number: 20050061062Abstract: It is possible to blast air on a surface portion of a measured object from a hole of pressing means, project illumination light in a concentric pattern with an optical element and shoot the measured object with a CCD so as to visually grasp hardness distribution on the surface portion from distortion of the concentric pattern displayed on an observed image. As for the hardness distribution, it is possible to detect luminance distribution of a measured object image obtained by the CCD so as to display the concentric pattern which is the luminance distribution as a conspicuous representation of the hardness distribution. And the luminance distribution can also be represented in the concentric pattern by multiplying a luminance value by an overflowing coefficient.Type: ApplicationFiled: September 15, 2004Publication date: March 24, 2005Applicants: Makoto Kaneko, Tomohiro Kawahara, Fuji Photo Optical Co., Ltd., Shinji TanakaInventors: Makoto Kaneko, Shinji Tanaka, Tomohiro Kawahara, Shinji Takeuchi