Patents by Inventor Hiromitsu Nishimura

Hiromitsu Nishimura 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).

  • Page alignment indication method, page control method, printer system and printer device
    Patent number: 6388765
    Abstract: On the side of a microcomputer for creating image data, a unique code for showing the page alignment is added to the created image data, and on the printer device side, the unique code is detected independently from the ordinary data analysis. The unique code is constituted by a sequence of a predetermined number or more of identical data of one or more bytes. Based on the results of detection of the unique code, page control and recovery process are executed.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: May 14, 2002
    Assignee: Fujitsu Limited
    Inventors: Noriko Nagano, Hiromitsu Nishimura, Takaji Fujiwara, Yoshikazu Ohnishi, Nobuko Fujiwara
  • Method for saving generated character image in a cache system including a backup cache
    Patent number: 6101576
    Abstract: When a control unit is in a non-operating (non-printing) state, data to be saved (character-image data) in a RAM cache memory is transferred to a disk cache memory at regular intervals in order of priority, thereby saving the data in the disk cache memory. If a power supply is cut off and then power is reintroduced, high-priority character-image data, which has been transferred from the RAM cache memory to the disk cache memory and saved in the disk cache memory when printing is not being carried out, is restored in the RAM cache memory. As a result, the high-priority data saved in the RAM cache memory when the power supply was cut off can be restored in the RAM cache memory, thereby raising the hit rate.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: August 8, 2000
    Assignee: Fujitsu Limited
    Inventors: Sumitake Kobayashi, Atsuo Matsunaga, Ichiro Kawabata, Ryozo Furutani, Tomomi Ohta, Seiichi Kamon, Hiromitsu Nishimura, Akihiro Abe
  • Method of controlling data transfer and a safe shutdown in a hierarchical cache system during power cut-off
    Patent number: 5761406
    Abstract: A method for transferring data from one memory to another within a memory hierarchy in a data processing system. The memory hierarchy includes a random access memory (RAM) cache within a control unit and a lower level disk cache memory. When the control unit is in a non-operating (non-printing) state, data to be saved (character-image data) in the RAM cache memory is transferred to the disk cache memory at regular intervals in order of priority, thereby saving the data in the disk cache memory. If a power supply is cut off and then power is reintroduced, high-priority character-image data, which has been transferred from the RAM cache memory to the disk cache memory and saved in the disk cache memory when printing is not being carried out, is restored in the RAM cache memory. As a result, the high-priority data saved in the RAM cache memory when the power supply was cut off can be restored in the RAM cache memory, thereby raising the hit rate.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: June 2, 1998
    Assignee: Fujitsu Limited
    Inventors: Sumitake Kobayashi, Atsuo Matsunaga, Ichiro Kawabata, Ryozo Furutani, Tomomi Ohta, Seiichi Kamon, Hiromitsu Nishimura, Akihiro Abe