Fujitsu Corporation

Masahiro Nakada

Kenichi Utsumi

Hiroshi Suzuki

Satoshi Itami

Masaru Nakahara

Kazuo Nakashima

Nagaaki Koshino

Hisashi Kojima

Kazunori Naito

Toshikatsu Narumi

Yasuyuki Goto

Iwao Tsugawa

Seiichi Iwasa

Yoshiaki Uchida

Takashi Tsubokura

Koichi Ogawa

Satoshi Komura

Tetsuya Shioda

Kyouko Miyabe

An information processing device includes a processor configured to generate one or more sets of data corresponding to information about a testing method set in advance, to input the sets of generated data into a test device, to identify sets of data making the test device exhibit predetermined behavior, among the sets of generated data, and to refer to information common among the sets of identified data, to aggregate the sets of generated data.

Information processing device, filtering system, and filtering method

An apparatus filters data received through a network and outputs the filtered data to a protection target device. The apparatus includes a processor to execute a process including: comparing the received data with a predetermined pattern and outputting a result of comparison, the predetermined pattern being one of a plurality of patterns that are given to a test device configured to estimate a behavior of the protection target device, the target device exhibiting a predetermined behavior to the predetermined pattern; and intercepting the received data when the result of comparison is a positive result that indicates intercepting the data.

Network filtering apparatus and filtering method

An apparatus includes: a memory; a management memory for storing first virtual addresses used by the first program, second virtual addresses used by the second program and management information indicative of association between first and second virtual addresses and physical addresses of the memory; and a processor for executing the first, the second and a management programs, the management program including: receiving a request to assign a shared area to be shared by the first and second programs from the second program; determining a physical address of the shared area corresponding to one of the first and one of the second virtual addresses; transmitting a notification of data writing by the first program to the second program; locking the shared area so as to prevent the second program from writing data after the notification; and unlocking the shared area after the second program has read data from the shared area.

Information processing program, information processing device and information processing method

A plurality of programs are recorded on a storage medium, selection information for selecting whether or not to permit starting for each program are registered as management information, and, when a program on the storage medium is to be started by a computer, a program only that is permitted for selection is displayed on a display unit with reference to the management information, for selection by a user. A selection-not-permitted sign is set in the portion of the management information involving a program not selected by the user so as to delete a selection-not-permitted program from the storage medium.

Program management method for computer to which storage medium is attached, computer and storage medium

An optical disk includes a user accessible area having a plurality of blocks and flag data recorded on the optical disk. The flag data indicates whether or not each of the blocks is in an erased state in which there is no recorded data. A flag area stores the flag data, and area data indicating that the optical disk has the flag area is recorded on the optical disk.

Optical disk and optical disk apparatus

In a method for preventing unauthorized use of a recording medium having a user accessible area and a user inaccessible area, first information is read from the user inaccessible area of the recording medium. The first information is compared with second information concerning a true recording medium (lawfully produced copy). It is then concluded that the recording medium is the true recording medium when the first information corresponds to the second information.

Unauthorized use preventing method for optical disks, optical disk

The present invention was made in order to provide a file server, wherein a distributing device for storing parts of data to be stored by a server between the server for providing data and a terminal device for outputting data provided by the server, the distributing device reads data and sends them to the terminal device if said data requested to be provided have been stored when receiving the requests from the terminal device, transfers the provision requests to the server if the data requested to be provided have not been stored, and when receiving requested data from the server, it newly registers the requested data and at the same time sends the data to the terminal device.

File server

Optical disk having an erased-state indicator and optical disk apparatus

A host apparatus has examination-period changing means for monitoring the state of use of a data input unit, such as how frequently a user is using the keys on a keyboard, and for changing, in dependence upon the monitored state of use, a period at which a check is performed to determine whether a recording medium has been loaded in an external storage unit and medium-loading monitoring means for performing the check, at the checking period decided. The examination-period changing means lengthens the checking period if frequency of use of the data input unit is high and shortens the checking period if frequency of use is low. In a case where a plurality of external storage units have been connected to the computer system, the checking of medium loading is executed only with regard to external storage units in which a recording medium has not been loaded. The host apparatus executes predetermined processing upon detecting that a recording medium has been loaded in an external storage unit.

System for changing period to examine external storage unit for storage

A file management system for a partially rewritable single storage medium increases a Rewritable Zone and an unrewritable Read Only Zone, where a desired number of files and pieces of medium management information, including management information for respective files, are written when the Read Only Zone is manufactured. The file management system comprises a reading device and a creating device. The reading device reads the medium management information written in the Read Only Zone upon commencing the use of the storage medium. The creating device creates, in the Rewritable Zone, file management information necessary for using the storage medium based on the medium management information read from the reading device, according to the usage status of the storage medium.

File management system for a partially rewritable storage medium where

Unauthorized use prevention method for optical disks, optical disk

An apparatus for making a musical database including a converting unit for converting musical information representing a music piece into note data items, each of note data items being a set of values associated with a period of a single sound denoted by a musical note and a scale level of the single sound denoted by the musical note, a position unit for producing position data items for the note data items, the position data items representing positions at which the note data items are positioned in the musical information, a unit for producing an index indicating relationships between the note data items and the position data items, and a storage unit for storing the index. A retrieval apparatus retrieves a string of note data items from a musical database using the index stored in the storage unit.

Apparatus for making music database and retrieval apparatus for such

A character string retrieval system retrieves a character string corresponding to a retrieval key input thereto from a text file including a plurality of characters. The system includes an index indicating position data identifying a position of each of characters in the text file and indicating next character data identifying either a character or a character string formed of a plurality of characters arranged next to each of the characters in the text file, a selecting unit for selecting a first character from characters forming the character string corresponding to the retrieval key, a determining unit for determining, with reference to said index, whether or not a character or a character string next to the first character, selected by said selecting unit, in the retrieval key is equal to a character or a character string identified by the character data corresponding to the first character; and output unit for outputting a retrieval result when said determining unit determines that a character or a character string next to the first character in the retrieval key is equal to a character or a character string identified by the character data corresponding to the first character, the retrieval result being obtained based on the position data corresponding to the first character in said index.

Character string retrieval system using index and unit for making the

A write control method for writing optical disk data wherein pits are written by a write signal composed of mark signal parts and space signal parts, and a length of each pit represents the optical disk data, comprising the steps of: converting the mark signal parts to pulses and generating a series of pulse trains which correspond to lengths of the mark signal parts, respectively; controlling a lengths and/or amplitude of each of the pulse trains in accordance with a length of the space signal part immediately before the mark signal part; and applying successively the controlled pulse trains to a laser irradiation device so that the pits are written.

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Kawasaki, Japan

Masahiro Nakada