1
Taro Inoue, Hidenori Umeno, Shunji Tanaka, Tadashi Yamamoto, Toru Ohtsuki: System for recovery from a virtual machine monitor failure with a continuous guest dispatched to a nonguest mode. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, July 25, 1995: US05437033 (159 worldwide citation)

A system and method for continuous operation of a virtual machine system having operation modes including a guest mode in which virtual machines are operated and a nonguest mode in which a virtual machine monitor for controlling the virtual machines is operated. The continuous guest is a virtual mac ...


2
Tadashi Nota, Masaichiro Yoshioka, Seiji Nagai, Shunji Tanaka, Toshiyuki Kinoshita: Fault recovery method and apparatus. Hitachi, Antonelli Terry Stout & Kraus, September 8, 1998: US05805790 (80 worldwide citation)

In a fault recovery method for a multi-processor system including a main storage and a plurality of virtual machines which are assigned to a plurality of processors under control of a host operating system and a plurality of guest operating systems and which operate on the processors associated ther ...


3
Shunji Tanaka, Hidenori Umeno, Nobuyoshi Sugama, Masaru Sato: Virtual machine control method and virtual machine system. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, September 3, 1996: US05553291 (75 worldwide citation)

A virtual machine control method for a supercomputer enables a plurality of virtual machines to use a vector processor. Control of the use of the vector processor is through the scalar processor. When a virtual machine requires use of the vector processor, it is first determined whether one of the o ...


4
Shunji Tanaka, Takayoshi Asai, Taro Inoue, Hidenori Umeno, Tsuyoshi Watanabe: Method and system for controlling/monitoring computer system having plural operating systems to run thereon. Hitachi, Antonelli Terry Stout & Kraus, January 31, 1995: US05386565 (68 worldwide citation)

An OS control method for controlling an operating system (OS) running in a computer system on which a plurality of OSs run and which includes an instruction processor, a control program for controlling running of a plurality of OSs, a main storage, an external storage device, and an address translat ...


5
Shunji Tanaka, Hidenori Umeno: Dispatch control of virtual machine. Hitachi, Sterne Kessler Goldstein & Fox, March 10, 1992: US05095427 (58 worldwide citation)

A method and a system in a virtual machine system controlling a simultaneous run of one or more operating systems (OS's) by use of a virtual machine control program on a real machine including a storage area for each virtual processor constituting the virtual machine for saving a status of each virt ...


6
Shunji Tanaka, Toru Ohtsuki, Hiroaki Sato, Hideo Sawamoto, Ryo Yamagata, Masaya Watanabe, Hidenori Umeno, Masatoshi Haraguchi: Input/output execution apparatus for a plural-OS run system. Hitachi, Antonelli Terry Stout & Kraus, March 12, 1996: US05499379 (37 worldwide citation)

A plural-OS run system in which a plurality of operating systems (OSs) capable of operating on machines of different architectures, respectively, are allowed to run on one bare machine under the control of one control program (CP) or one control means. The input/output instruction and input/output i ...


7
Shunji Tanaka, Hidenori Umeno: Input-output control method in a virtual machine system. Hitachi, Antonelli Terry & Wands, December 12, 1989: US04887202 (37 worldwide citation)

An I/O control system in a virtual machine system has at least one virtual machine (VM) running under control of a virtual machine control program (VMCP) and has a direct I/O execution mode in which an I/O interruption to the I/O device dedicated by the running VM is directly executed without interv ...


8
Yuri Hondou, Hirofumi Nagasuka, Tadashi Yamagishi, Shunji Tanaka, Toshiyuki Kinoshita: Job scheduling analysis method and system using historical job execution data. Hitachi, Fay Sharpe Beall Fagan Minnich & McKee, March 9, 1999: US05881283 (20 worldwide citation)

A job scheduling analysis method and system are disclosed in which a job schedule is analyzed by use of historical job execution data in a computer system in which a plurality of jobs are executed in parallel. Historical execution data of a plurality of jobs and the file names of files accessed by t ...


9
Takashi Araseki, Kazuo Ochiai, Takashi Ogihara, Shunji Tanaka: Echo controller comprising a mode switch for switching echo suppressor and canceller. Nippon Electric Company, January 25, 1977: US04005277 (20 worldwide citation)

An echo controller comprises a parallel circuit of an echo suppressor and a self-adaptive echo canceller near an echo path of a long-distance telephone network. The echo controller further comprises a mode switch responsive to levels of a received signal, an unprocessed signal, and an output signal ...


10
Yuri Hondou, Hirofumi Nagasuka, Tadashi Yamagishi, Shunji Tanaka, Toshiyuki Kinoshita: Job scheduling analysis method and system using historical job execution data. Hitachi, Mattingly Stanger Malur & Brundidge P C, May 3, 2005: US06889243 (19 worldwide citation)

A job scheduling analysis method and system are disclosed in which a job schedule is analyzed by use of historical job execution data in a computer system in which a plurality of jobs are executed in parallel. Historical execution data of a plurality of jobs and the file names of files accessed by t ...



Click the thumbnails below to visualize the patent trend.