Patents by Inventor Takashi Iizumi

Takashi Iizumi 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).

  • Publication number: 20070112452
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Application
    Filed: January 3, 2007
    Publication date: May 17, 2007
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi
  • Patent number: 7177715
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: February 13, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi
  • Publication number: 20070029478
    Abstract: An object of the present invention is to provide a sample image forming method and a charged particle beam apparatus which are suitable for realizing suppressing of the view area displacement with high accuracy while the influence of charging due to irradiation of the charged particle beam is being suppressed. In order to attain the above object, the present invention provide a method of forming a sample image by scanning a charged particle beam on a sample and forming an image based on secondary signals emitted from the sample, the method comprising the steps of forming a plurality of composite images by superposing a plurality of images obtained by a plurality of scanning times; and forming a further composite image by correcting positional displacements among the plurality of composite images and superposing the plurality of composite images, and a charged particle beam apparatus for realizing the above method.
    Type: Application
    Filed: August 9, 2006
    Publication date: February 8, 2007
    Inventors: Mitsugu Sato, Atsushi Takane, Takashi Iizumi, Tadashi Otaka, Hideo Todokoro, Satoru Yamaguchi, Kazutaka Nimura
  • Patent number: 7164126
    Abstract: An object of the present invention is to provide a sample image forming method and a charged particle beam apparatus which are suitable for realizing suppressing of the view area displacement with high accuracy while the influence of charging due to irradiation of the charged particle beam is being suppressed. In order to attain the above object, the present invention provide a method of forming a sample image by scanning a charged particle beam on a sample and forming an image based on secondary signals emitted from the sample, the method comprising the steps of forming a plurality of composite images by superposing a plurality of images obtained by a plurality of scanning times; and forming a further composite image by correcting positional displacements among the plurality of composite images and superposing the plurality of composite images, and a charged particle beam apparatus for realizing the above method.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: January 16, 2007
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Mitsugu Sato, Atsushi Takane, Takashi Iizumi, Tadashi Otaka, Hideo Todokoro, Satoru Yamaguchi, Kazutaka Nimura
  • Publication number: 20060269121
    Abstract: A system for measuring a pattern on a sample, including: a data processing system that processes a set of two-dimensional distribution data of intensities from the sample, to calculate: a set of edge points indicative of position of edges of said pattern in a two-dimensional plane from said two-dimensional distribution data; an approximation edge indicative of the edge of the pattern; an edge roughness data by calculating a difference between the set of edge points and said approximation edge; and a correlation between a first portion of the edge roughness data and a second portion of the edge roughness data.
    Type: Application
    Filed: August 10, 2006
    Publication date: November 30, 2006
    Inventors: Atsuko Yamaguchi, Tsuneo Terasawa, Tadashi Otaka, Takashi Iizumi, Osamu Komuro
  • Patent number: 7095884
    Abstract: The present invention provides a circuit pattern edge inspection method of finding out a failure in a fabricating process and image distortion in an observing apparatus by analyzing, by a non-destructive inspection, the shape of an edge of a line of a fine pattern in which characteristics of the material, process, and an exposure optical system in a semiconductor fabricating process appear, and performing analysis quantitatively. The method includes a step of detecting a set of edge points indicative of positions of edges of the pattern in a two-dimensional plane by a threshold method; a step of obtaining an approximation line for the set of edge points detected; and a step of obtaining an edge roughness shape and a characteristic by calculating the difference between the set of the edge points and the approximation line. A plurality of values are used as thresholds used for the threshold method.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: August 22, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Atsuko Yamaguchi, Tsuneo Terasawa, Tadashi Otaka, Takashi Iizumi, Osamu Komuro
  • Patent number: 7047096
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: May 16, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi
  • Publication number: 20060097158
    Abstract: An object of the present invention is to provide a scanning electron microscope for reducing a process concerning inspection positioning or an input operation, thereby functioning with high precision at high speed. To accomplish the above object, the present invention provides a scanning electron microscope having a function for identifying a desired position on the basis of a pattern registered beforehand, which includes a means for setting information concerning the pattern kind, the interval between a plurality of parts constituting the pattern, and the size of parts constituting the pattern and a means for forming a pattern image composed of a plurality of parts on the basis of the information obtained by the concerned means.
    Type: Application
    Filed: December 2, 2005
    Publication date: May 11, 2006
    Inventors: Satoru Yamaguchi, Takashi Iizumi, Osamu Komuro, Hidetoshi Morokuma, Tatsuya Maeda, Juntaro Arima, Yasuhiko Ozawa
  • Patent number: 7034296
    Abstract: An object of the present invention is to provide a sample image forming method and a charged particle beam apparatus which are suitable for realizing suppressing of the view area displacement with high accuracy while the influence of charging due to irradiation of the charged particle beam is being suppressed. In order to attain the above object, the present invention provide a method of forming a sample image by scanning a charged particle beam on a sample and forming an image based on secondary signals emitted from the sample, the method comprising the steps of forming a plurality of composite images by superposing a plurality of images obtained by a plurality of scanning times; and forming a further composite image by correcting positional displacements among the plurality of composite images and superposing the plurality of composite images, and a charged particle beam apparatus for realizing the above method.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: April 25, 2006
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Mitsugu Sato, Atsushi Takane, Takashi Iizumi, Tadashi Otaka, Hideo Todokoro, Satoru Yamaguchi, Kazutaka Nimura
  • Patent number: 7002151
    Abstract: An object of the present invention is to provide a scanning electron microscope for reducing a process concerning inspection positioning or an input operation, thereby functioning with high precision at high speed. To accomplish the above object, the present invention provides a scanning electron microscope having a function for identifying a desired position on the basis of a pattern registered beforehand, which includes a means for setting information concerning the pattern kind, the interval between a plurality of parts constituting the pattern, and the size of parts constituting the pattern and a means for forming a pattern image composed of a plurality of parts on the basis of the information obtained by the concerned means.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: February 21, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Satoru Yamaguchi, Takashi Iizumi, Osamu Komuro, Hidetoshi Morokuma, Tatsuya Maeda, Juntaro Arima, Yasuhiko Ozawa
  • Publication number: 20050247876
    Abstract: An object of the present invention is to suppress measurement errors caused by the fact that the shrink amount due to scan of an electron beam differs pattern by pattern. To accomplish this object, according to the invention, functions indicative of a process of change of pattern dimension when the electron beam is irradiated on a sample are prepared in respect of the kinds of sample patterns, and dimension values of a particular pattern measured by scanning the electron beam on the particular pattern are fitted to a function prepared for the particular pattern to calculate a dimension of the particular pattern before it changes.
    Type: Application
    Filed: May 19, 2003
    Publication date: November 10, 2005
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Hiroki Kawada, Takashi Iizumi, Tadashi Otaka
  • Patent number: 6954677
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: October 11, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi
  • Publication number: 20050207673
    Abstract: The present invention is relates to a method for measuring average line width of line and space patterns in a simplified manner and at high speed without measuring at many positions. An average line width, an average space width, and an average pitch width are calculated from peak intervals of auto-correlation values of a differentiated image of the line and space patterns or peak patterns corresponding to line edges on projection data of the differentiated image.
    Type: Application
    Filed: December 22, 2004
    Publication date: September 22, 2005
    Inventors: Atsushi Takane, Tatsuya Maeda, Takashi Iizumi
  • Publication number: 20050199811
    Abstract: Image evaluation method capable of objectively evaluating the image resolution of a microscope image. An image resolution method is characterized in that resolution in partial regions of an image is obtained over an entire area of the image or a portion of the image, averaging is performed over the entire area of the image or the portion of the image, and the averaged value is established as the resolution evaluation value of the entire area of the image or the portion of the image. This method eliminates the subjective impressions of the evaluator from evaluation of microscope image resolution, so image resolution evaluation values of high accuracy and good repeatability can be obtained.
    Type: Application
    Filed: May 9, 2005
    Publication date: September 15, 2005
    Inventors: Tohru Ishitani, Mitsugu Sato, Hideo Todokoro, Tadashi Otaka, Takashi Iizumi, Atsushi Takane
  • Publication number: 20050189501
    Abstract: A charged particle beam apparatus capable of automatically measuring an image magnification error of an apparatus and capable of automatically calibrating the image magnification in high precision is provided. To this end, while an image processing operation of either an auto-correlation function or an FFT transformation is employed with respect to a scanning image of a reference material having a periodic structure, the averaged pitch dimension of which is known, averaged periodic information owned by the scanning image is detected so as to measure an image magnification error of the apparatus. Also, the information as to the acquired image magnification error is fed back to an image magnification control means of the apparatus so as to automatically execute a calibration as to the image magnification in high precision.
    Type: Application
    Filed: January 21, 2005
    Publication date: September 1, 2005
    Inventors: Mitsugu Sato, Atsushi Takane, Shigeto Isakozawa, Takashi Iizumi, Tatsuya Maeda, Hiromi Inada
  • Patent number: 6909930
    Abstract: To realize a method for detecting variations in conditions (drift of the exposure and drift of the focus) in exposure equipment at a product wafer level in lithography process, the process is specified in such a way that calculation results of feature quantities such as electron beam images, line profiles, dimensions, etc. under various sets of the exposure and the focus are stored as a library, and an electron beam image of the product wafer is compared with these pieces of data in the library so that detection of drifts of the exposure and the focus a check of the results on the screen can easily be performed.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: June 21, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Chie Shishido, Yuji Takagi, Masahiro Watanabe, Yasuhiro Yoshitake, Shunichi Matsumoto, Takashi Iizumi, Osamu Komuro, Maki Tanaka, Hidetoshi Morokuma
  • Publication number: 20050109937
    Abstract: An object of the present invention is to provide a scanning electron microscope for reducing a process concerning inspection positioning or an input operation, thereby functioning with high precision at high speed. To accomplish the above object, the present invention provides a scanning electron microscope having a function for identifying a desired position on the basis of a pattern registered beforehand, which includes a means for setting information concerning the pattern kind, the interval between a plurality of parts constituting the pattern, and the size of parts constituting the pattern and a means for forming a pattern image composed of a plurality of parts on the basis of the information obtained by the concerned means.
    Type: Application
    Filed: September 3, 2004
    Publication date: May 26, 2005
    Inventors: Satoru Yamaguchi, Takashi Iizumi, Osamu Komuro, Hidetoshi Morokuma, Tatsuya Maeda, Juntaro Arima, Yasuhiko Ozawa
  • Patent number: 6862485
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: March 1, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi
  • Publication number: 20050038546
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Application
    Filed: September 20, 2004
    Publication date: February 17, 2005
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi
  • Publication number: 20050038545
    Abstract: The present invention provides a remote maintenance method, a remote maintenance system, and an industrial device for enabling control and thorough services and billing according to the contents of the remote maintenance operation and the request destination of maintenance and enabling access limit according to the attribute of a service person, access limit according to the device state, and output limit according to the output mode. The industrial device 123 installed at the factory 120 and the operation device 113 installed in the maintenance center 110 are connected via the network 100.
    Type: Application
    Filed: September 20, 2004
    Publication date: February 17, 2005
    Inventors: Juntaro Arima, Masaaki Inaba, Takeiki Aizono, Takashi Iizumi