Patents by Inventor Masahiko Iwane

Masahiko Iwane 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).

  • Microprogrammed information processing system having self-checking function
    Patent number: 4355389
    Abstract: An information processing system of the microprogram control type having a control storage is provided with an exclusive memory unit for storing only the address information of a microprogram stored in the control storage and an exclusive control circuit for reading a specific microprogram out of the control storage by the address information from the exclusive memory unit and executing the program read out. The exclusive control circuit operates when the information processing unit is an idle state to execute successively the micro-steps of the specified microprogram read out in accordance with the address information in the exclusive memory unit, thereby to verify the information processing unit.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: October 19, 1982
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Fumitaka Sato, Masahiko Iwane, Masaki Murayama
  • Information processing system with an operation console for processing both normal operation and maintenance commands
    Patent number: 4305125
    Abstract: An information processing system includes an information processing unit and an operation console. The information processing unit includes a CPU having a fault diagnostic unit which is coupled with the diagnostic interface port of the operation console, through a diagnostic interface. The operation console is provided with a microprocessor having a first operation mode carrying out at least a normal operation processing function and a second mode executing both a maintenance command processing function and a normal operation processing function, and with a memory for storing a maintenance command processing routine for executing the maintenance command processing function. When an operator issues an instruction for shifting the first operation mode to the second operation mode control is transferred to the operation console so that the microprocessor executes the maintenance command processing function and the normal operation processing function.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: December 8, 1981
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Fumitaka Sato, Masahiko Iwane, Masaki Murayama
  • Information processing system
    Patent number: 4212059
    Abstract: An information processing system includes an information processing unit and an operation console. The information processing unit includes a CPU having a fault diagnostic unit which is coupled with the diagnostic interface port of the operation console, through a diagnostic interface. The operation console is provided with a microprocessor having a first operation mode carrying out at least a normal operation processing function and a second mode executing both a maintenance command processing function and a normal operation processing function, and with a memory for storing a maintenance command processing routine for executing the maintenance command processing function. When an operator issues an instruction for shifting the first operation mode to the second operation mode control is transferred to the operation console so that the microprocessor executes the maintenance command processing function and the normal operation processing function.
    Type: Grant
    Filed: March 14, 1978
    Date of Patent: July 8, 1980
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Fumitaka Sato, Masahiko Iwane, Masaki Murayama