Patents by Inventor Shigemi Nagata

Shigemi Nagata 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: 20020105541
    Abstract: A multimedia information arranging apparatus that utilizes various feature values contained in multimedia information, carries out a flexible retrieval and classification and displays the information in an information set arrangement space is provided.
    Type: Application
    Filed: March 20, 2002
    Publication date: August 8, 2002
    Applicant: FUJITSU LIMITED
    Inventors: Susumu Endou, Naoki Sashida, Daiki Masumoto, Shigemi Nagata
  • Publication number: 20010038714
    Abstract: The variations in appearance of an object caused by the variations in a capturing environment are estimated to be modeled, and the object model thus obtained is previously registered in a database. Picture information of an object to be a recognition target is input, and the input picture information is matched with the previously registered object model. The similarity with respect to the registered object model is determined, and the type of the object to be a recognition target is output, which is determined to be most similar among the registered object models. Information of a plurality of pictures captured by changing the relative position and posture of an object is input, and the variations in appearance of an object caused by the possible variations in a capturing environment are estimated to be modeled based on the input information of a plurality of pictures.
    Type: Application
    Filed: January 31, 2001
    Publication date: November 8, 2001
    Inventors: Daiki Masumoto, Naoki Sashida, Hiroki Kitagawa, Shigemi Nagata
  • Publication number: 20010038713
    Abstract: A window picture (robust window picture) is selected as a model window picture, which is unlikely to be influenced by the variations in an environment and selected irrespective of the variations in an environment of pictures assumed to be inputted in a recognition phase. Alternatively, a window picture (stable window picture) is selected as a model window picture, in which the changes in a feature value are small even though an environment is varied. For example, a tracking window picture group is obtained from a registered picture group in which an environment is continuously varied, by tracking window pictures of a basic registered picture. Then, a static extraction window picture is obtained by extracting window pictures as independent pictures from a series of pictures. Then, a window picture selected both in the tracking window picture group and in the static extraction window picture is set as a robust window picture, and picture matching is conducted using the robust window picture.
    Type: Application
    Filed: January 25, 2001
    Publication date: November 8, 2001
    Inventors: Hiroki Kitagawa, Daiki Masumoto, Naoki Sashida, Masahiko Sugimura, Shigemi Nagata
  • Patent number: 6016154
    Abstract: An image forming apparatus, such as a laser printer, ink jet printer, or a thermal transfer, which comprises a neural network. The apparatus improves image quality by reducing a zigzag included, e.g., in input image data, reducing the circuit size by reducing the number of bits having small weights for an input combination, and concurrently correcting the size of center, left and right picture elements in a predetermined window. The neural network outputs correction data for the size and position of the center dot in a window in response to an input of dot image data in a window or subdot pattern exposure data for the center dot. Additionally, the neural network uses any of the three values, +1, -1 and 0, for the coefficient of input combination for a hidden layer neuron, e.g., after a teacher pattern is learned. Further, the neural network outputs correction data for 3.times.N subblocks of picture elements obtained by dividing blocks of picture elements in the center, left and right of a window.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: January 18, 2000
    Assignee: Fujitsu Limited
    Inventors: Jun Moroo, Tomohisa Mikami, Masahiro Mori, Hirotaka Chiba, Shigemi Nagata, Shigeyoshi Nakamura, Toshio Konaka, Kazuhiko Sato
  • Patent number: 5579442
    Abstract: A network is provided in which the direct model of the controlled target is learned, and an actuation amount for realizing a target control amount is generated using this network in accordance with the relaxation algorithm. A recognizing network and a prediction network are provided, wherein the recognition result of the recognizing network is input to the prediction network, and the prediction result of the predicting network is fed back to the recognizing network. Moreover, the predicting network is utilized so as to generate a command relating to the motion in accordance with the relaxation algorithm.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: November 26, 1996
    Assignee: Fujitsu Limited
    Inventors: Takashi Kimoto, Daiki Masumoto, Hiroshi Yamakawa, Shigemi Nagata
  • Patent number: 5498943
    Abstract: A feedback control device at a certain control time, predicts a feedback quantity at the next control time on the basis of a feedback quantity fed back from a controlled object and then performs a control operation based on the predicted feedback quantity. The feedback control device includes a predictive control unit for producing such an actuating signal as to decrease a deviation between the predicted feedback quantity and a desired value. The actuating signal is used to control the controlled object. This eliminates the detrimental effects of time delays associated with the controlled object or the control device, thus ensuring good control. The use of the predictive control unit permits the controlled quantity from the controlled object to converge to the desired value monotonically and quickly.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: March 12, 1996
    Assignee: Fujitsu Limited
    Inventors: Takashi Kimoto, Daiki Masumoto, Hiroshi Yamakawa, Shigemi Nagata
  • Patent number: 5434883
    Abstract: An adaptive equalizer detects characteristics of a transmission line in radio and cable communications and equalizes received signals by using the detected results. Equalization is for not only linear distortion but also nonlinear distortion in accordance with variation of characteristics of the transmission line. The adaptive equalizer includes a characteristic detection unit 11 for detecting real part and imaginary parts of a transfer function by using an output signal corresponding to an input signal of an object to be equalized to compensate for deterioration, for example a transmission line; and an equalizing unit 12 for equalizing an output signal of the object to be equalized 10 in accordance with an unknown input signal by using the detected result of the characteristic detection unit 11.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: July 18, 1995
    Assignee: Fujitsu Limited
    Inventors: Takashi Kimoto, Yoshinori Yaginuma, Kazuo Asakawa, Shigemi Nagata
  • Patent number: 5420964
    Abstract: This invention pertains to neural network system for learning an external evaluation standard and for learning the evaluation from the outside for the processing result, in a system capable of internal evaluation of the correspondence between external information and the processing result of its own system for the input information. It purports to learn the external evaluation as the internal evaluation standard of the internal evaluation time.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: May 30, 1995
    Assignee: Fujitsu Limited
    Inventors: Tamami Sugasaka, Kazushige Saga, Minoru Sekiguchi, Shigemi Nagata
  • Patent number: 5420810
    Abstract: The adaptive input-output apparatus comprises a data holding portion which holds sample data for determining an input/output function, a data selector which uses a predetermined evaluation standard to select valid sample data from said sample data, and an input/output portion which determines an input/output function in accordance with sample data selected by the data selector and outputs on the basis of the input/output function and in accordance with external input. Accordingly, the adaptive input-output apparatus removes unnecessary sample data or uses a predetermined condition to remove sample data having a small evaluation quantity and validity when the input/output function is determined, extracts sample data having a high validity and determines an input/output function using a reduced set of sample data.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: May 30, 1995
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Yamakawa, Daiki Masumoto, Takashi Kimoto, Shigemi Nagata
  • Patent number: 5285377
    Abstract: A control apparatus structuring system for facilitated handling of a nonlinear control object, using a generic form of control rules, and which stably reaches a target value by setting plural virtual target values corresponding to the system states and by selecting one according to the distance to the target value. A processor performs a signal conversion function to realize input/output characteristics for a given teacher signal group. A virtual target controller controls advance knowledge about data relations between control state volumes. A calculator calculates a correction volume of a control state volume from the control state volume of a control object and a virtual target value defined by the control data of the virtual target controller corresponding to the control state volume.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: February 8, 1994
    Assignee: Fujitsu Limited
    Inventors: Tamami Sugasaka, Minoru Sekiguchi, Shigemi Nagata
  • Patent number: 4853885
    Abstract: A method of curve approximation comprises a dividing step for dividing a curve into arcs classified into four quadrant directions according to a normal thereof, each having a single-value monotone increasing or decreasing function, and a calculating step for calculating an approximate curve represented by a curve approximation function by using an interval between end points of each arc as a curve approximation interval.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: August 1, 1989
    Assignee: Fujitsu Limited
    Inventors: Satoshi Naoi, Akira Inoue, Katsuhiko Nishikawa, Shigemi Nagata