Patents by Inventor Yutaka Hirasawa

Yutaka Hirasawa 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: 5029075
    Abstract: Predetermined information is included in an information portion for a given node, which is included in load information sent through a link selected as a circuit for sending data to the given node. The link used for transmission of load information with the predetermined information can be discriminated from other links. In a node which has received the load information with the predetermined information, the circuit which is used for sending the load information with the predetermined information is excluded from routing candidates.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 2, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Hirasawa
  • Patent number: 4992931
    Abstract: An alignment correction apparatus includes: a first storage section for storing a source data stucture, a second storage section for sequentially storing input block data elements, an alignment data storage section, and a processor. The source data structure includes a plurality of data elements, and each block data element includes at least one data element. Alignment data includes a plurality of alignment data elements independently associated with the block data element. The processor sequentially reads out the alignment data elements from the alignment data storage section, in response to an alignment correction instruction. When the readout alignment data element is predetermined data, a block data element is read out from the first storage section and stored in the second storage section. When the readout alignment data element is not predetermined data, the next alignment data element is read out from the alignment data storage section.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: February 12, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Hirasawa
  • Patent number: 4887075
    Abstract: A LAN system comprises LAN controllers provided for computer systems that constitute a multi-computer system. Each LAN controller has a memory section in which a LAN address common to the multi-computer system is set in accordance with a command from a master computer of the computer systems, and a register section for holding a reception permit command (flag) from the master computer system. Only when the reception permit command is held in the register section, a transmission frame whose destination address is the LAN address held in the memory section is selectively received from a LAN and transferred to the master computer system.
    Type: Grant
    Filed: June 17, 1988
    Date of Patent: December 12, 1989
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Yutaka Hirasawa
  • Patent number: 4675252
    Abstract: Disclosed herein is a base material having dyed membrane(s) on the surface thereof, the dyed membrane(s) being obtained by a process comprising the steps of applying a photoreactive resin composition (D), which comprises (i) a copolymer (A) of a vinyl monomer having photosensitive group(s) and another vinyl monomer which is copolymerizable with the vinyl monomer having photosensitive group(s) and has group(s) having an affinity for an anionic dyestuff, (ii) an initiator (B) of photo-reaction as an optional component of the photoreactive resin composition (D) and (iii) a solvent (C), onto the surface of the base plate, thereby forming a membrane from the thus applied resin composition (D) on the surface of the base material, irradiating the thus formed membrane(s) with activating light, thereby initiating a reaction in the membrane, and thereafter dyeing the thus treated membrane with the anionic dye.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: June 23, 1987
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Matsuo Hashimoto, Masayuki Kiyomoto, Yoshimitsu Karasawa, Kenji Sakamoto, Yasuhiko Kakui, Yutaka Hirasawa