Patents by Inventor Koji Izawa

Koji Izawa 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).

  • Patent number: 5179658
    Abstract: An information processing apparatus having a scanner and a magnetic disk, both for supplying data to be stored, and an optical disk for storing the supplied data. The scanner supplies image data. The magnetic disk supplies code data such as document data and drawing data. The processing apparatus stores the image data and the code data into the optical disk, each type of data having a flag indicating its type.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: January 12, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Izawa, Shiro Takagi, Tadanobu Kamiyama
  • Patent number: 5001767
    Abstract: An image processing device capable of processing images containing poorly contrasted letters and/or bold letters in addition to well contrasted letters and pictures such that both resolutions of letters and tones of pictures can be preserved. The device may includes a circuit to distinguish two level images from non two level images according to image concentration related quantity, and a circuit to distinguish picture images out of non two level images according to another image concentration related quantity. The device may include a circuit to distinguish letters from pictures according to the maximum and the minimum values of the image concentration related quantity. The device may includes a circuit to distinguish letters from pictures according to the maximum and the minimum values of changes in the image concentration related quantity.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: March 19, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hitoshi Yoneda, Hironobu Machida, Hiroki Kanno, Koji Izawa
  • Patent number: 4964039
    Abstract: An information processing apparatus is provided with an optical disk for storing image data and code data. The code data stored in the optical disk have different data format. The optical disk further stores a flag indicating the data format of each code data. When retrieving the code data from optical disk, the processing apparatus processes the retrieved code data according to the data format indicated by the flag, and stores the processed data into a floppy disk.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: October 16, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Izawa, Shiro Takagi, Tadanobu Kamiyama
  • Patent number: 4934033
    Abstract: A solid electrolytic capacitor, and a method of manufacturing the same, includes a capacitor element which comprises a metal plate capable of having a dielectric oxidation layer formed thereon, a dielectric oxidation layer formed on a surface of the metal plate, a polymer layer of a heterocyclic compound formed on the dielectric oxidation layer, a conductive layer formed on the polymer layer, wherein the polymer layer near a defect interface of the dielectric oxidation layer is converted into an insulator, and terminals provided on respective ones of the metal plate and conductive layer.
    Type: Grant
    Filed: August 25, 1988
    Date of Patent: June 19, 1990
    Assignee: Nitsuko Corporation
    Inventors: Yoshihiro Harakawa, Koji Izawa, Hiedmitsu Takeuchi, Shinji Nakamura, Sadamu Toita
  • Patent number: 4929316
    Abstract: A method of manufacturing an organic semi-conductor solid electrolytic capacitor wherein a conductive polymer thin film layer of a heterocyclic compound, i.e., pyrrole, thiophene or furan, is formed as a solid electrolyte on the surface of a metal substrate having a dielectric oxide film formed thereon by electrolytic oxidation polymerization carried out in an electrolytic solution which contains pyrrole, thiophene or furan as a heterocyclic compound and an aliphatic or aromatic sulfonic acid or a salt thereof as a supporting electrolyte in an organic solvent, for example, acetonitrile, acetone or propylene carbonate.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: May 29, 1990
    Assignee: Niksuko Corporation
    Inventors: Yoshihiro Harakawa, Seiya Takahashi, Koji Izawa, Hidemitsu Takeuchi, Keizo Ikari
  • Patent number: 4885704
    Abstract: A data processing apparatus includes a scanner for scanning a document, a display device for displaying the picture information, and a file device for filing the picture information. The display device can display the picture information and selection marks, i.e., icons or commands, for selecting the scanner, display device and file device. The marks are designated by a mouse to select the scanner, the display device and file device. Upon the completion of designation of the marks, the scanner, display device and file device are operated in the order in which the selection marks have been designated by the mouse.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: December 5, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shiro Takagi, Minoru Sato, Koji Izawa
  • Patent number: 4841375
    Abstract: Image data having a predetermined pixel density, and output from a personal computer, is supplied to an image-resolution conversion apparatus connected to a printer having a pixel density different from the above predetermined pixel density. In the image resolution conversion apparatus, the pixel density of the input image data is converted, by a pixel converter, to a pixel density matching that of the printer, according to a conversion ratio set by a pixel-density conversion ratio setter for setting a ratio of pixel-density conversion, from the pixel density of the personal computer to that of the printer. The pixel-density converted image data is then supplied to and printed by the printer.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: June 20, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shunichi Nakajima, Koji Izawa
  • Patent number: 4805074
    Abstract: A solid electrolytic capacitor has a capacitor element including a metal plate, such as a plate of aluminum, tantalum, niobium or titanium, capable of having a dielectric oxidation layer formed thereon, a resist layer of a desired shape formed on a predetermined portion of the metal plate, a dielectric oxidation layer formed on a surface of the metal plate at one portion thereof defined by the resist layer, a polymer layer of a heterocyclic compound such as pyrrole, furan or thiophene formed on the dielectric oxidation layer, a conductive layer formed on the polymer layer, a first terminal attached to another portion of the metal plate defined by the resist layer, and a second terminal attached to the conductive layer. In an embodiment, a plurality of the metal plates are stacked to obtain a capacitor element having a multi-layered structure.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: February 14, 1989
    Assignee: Nitsuko Corporation
    Inventors: Yoshihiro Harakawa, Koji Izawa, Hidemitsu Takeuchi, Shinji Nakamura, Sadamu Toita
  • Patent number: 4785380
    Abstract: A solid electrolytic capacitor, and a method of manufacturing the same, includes a capacitor element which comprises a metal plate capable of having a dielectric oxidation layer formed thereon, a dielectric oxidation layer formed on a surface of the metal plate, a polymer layer of a heterocyclic compound formed on the dielectric oxidation layer, a conductive layer formed on the polymer layer, wherein the polymer layer near a defect interface of the dielectric oxidation layer is converted into an insulator, and terminals provided on respective ones of the metal plate and conductive layer.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: November 15, 1988
    Assignee: Nitsuko Corporation
    Inventors: Yoshihiro Harakawa, Koji Izawa, Hidemitsu Takeuchi, Shinji Nakamura, Sadamu Toita
  • Patent number: 4601003
    Abstract: A document rearranging system is disclosed which includes an optical disk device storing a totality of electrical image information representing paper documents, a first CRT for displaying new document image information to be filed, and a second CRT for selectively displaying a first image presenting a perspective pictorial illustration of an actual work place in which various types of document filing office equipment including a desk with drawers and a filing cabinet are arranged and a second image representing desired one set of filing holders among a plurality of sets of filing holders in the office equipments.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: July 15, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Tsuneo Yoneyama, Koji Izawa
  • Patent number: 4534622
    Abstract: A solid-state optical device with a plurality of cells having a plurality of optical functions is disclosed. Each of the cells comprises a transparent substrate, an anti-reflection film formed on the lower surface of the transparent substrate, a MOS transistor and a capacitor formed on the upper surface of the transparent substrate, a liquid crystal display device formed on the MOS transistor and capacitor, and window for leading a light signal incident on the liquid crystal display device from above to the transparent substrate. At least either a channel region of the MOS transistor and a region intervening between pair electrodes of the capacitor is formed of a photoconductive film. A transparent medium intervenes between the transparent substrate and photoconductive film such that light signal led through the window to the transparent substrate is reflected by an object disposed in contact with anti-reflection film to reach the photoconductive film, thereby generating carriers therein.
    Type: Grant
    Filed: January 3, 1984
    Date of Patent: August 13, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Nozomu Harada, Yasuhisa Oana, Keisuke Ogi, Koji Izawa, Akira Taya, Masanori Sakamoto
  • Patent number: 4514738
    Abstract: A recording system has a thermal head having a plurality of thermal heating resistive elements aligned in line and a drive circuit for selectively energizing the thermal heating resistive elements to record image data for one line. The recording system also has a calculator for calculating supply energy data supplied to each resistive element for recording one-line image data in accordance with the one-line image data and the storage energy stored in each of the resistive elements after the immediately preceding line is recorded. A control circuit controls the supply energy supplied to each resistive element through drive circuits in response to the supply energy data.
    Type: Grant
    Filed: November 22, 1983
    Date of Patent: April 30, 1985
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Hitoshi Nagato, Koji Izawa, Shuzo Hirahara
  • Patent number: 4185271
    Abstract: The character reading system is provided with a pretreating system for a pattern recognition and a picture translation wherein a pattern signal obtained by scanning a character pattern on a recording medium is processed at such high threshold level that does not contain a noise component to form a primary kernel pattern, and the pattern signal is processed at such low threshold level that contains said character pattern to obtain a reference pattern. The kernel pattern and the reference pattern are masked on a memory device to have predetermined size and subjected to connecting operation when they are read out by forward scanning to form a connected secondary kernel pattern. The secondary kernel pattern and the reference pattern are masked to have predetermined size and then reversely scanned to subject both patterns to the second connecting operation thereby producing a last kernel pattern.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: January 22, 1980
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Koji Izawa, Kouichi Komatsu, Mitsuyoshi Okamura