Abstract: The present invention relates to a file device and file access method that divides a file into units of clusters or blocks and records, and has as its object to provide a file device and file access method such that even when there is a failure and the data is not recorded correctly to the end the data that has been recorded can be accessed. When recording a file to an external storage device divided among a plurality of blocks, the blocks that are to record the file are pre-allocated in the external storage device, management information that indicates the allocated blocks is created and the management information is recorded in the external storage device, after which the data that makes up the file is recorded in the external storage device.

Abstract: A search index generation apparatus includes: an information manipulation monitor unit detecting an information manipulation performed by a user on a computer by monitoring the information manipulation of the user on the computer; an information manipulation database for accumulation of data relating to an information manipulation detected by the information manipulation monitor unit; and a task detection unit analyzing the data relating to the information manipulation accumulated in the information manipulation database, detecting a task of the user, identifying an information group processed in the task, and recording the data relating to the task in the task database.

Abstract: A search query generator apparatus comprises an information manipulation monitor unit for detecting information manipulations that a user has performed in a computer by monitoring information manipulations in the computer by the user, an information manipulation DB (database) for accumulating data relating to the information manipulations detected by the information manipulation monitor unit, and a task detection unit for detecting a user task by analyzing the data relating to the information manipulations accumulated in the information manipulation DB.

Abstract: Video data is managed in units of management blocks set in a storage area of a storage device. An access to the storage device is made in an access unit obtained for each video according to an encoding rate, etc. Additionally, a video is recorded so that only video data of the same program is recorded in one management block. As a result, an empty area can be prevented from being fragmented, and videos can be recorded even if the video data are recorded/reproduced at different encoding rates from a plurality of channels.

Abstract: A plurality of processes executed on an operating system of a computer are monitored, the correspondence relations between each process and pieces of information processed by each process are registered in a process management table. Then, the relations between the pieces of information are extracted by analyzing what processes have been executed between the pieces of information of each process by referring to the result of the monitoring of the processes and to the process management table. The extracted relations between the pieces of information are registered into an attribute information table created for each piece of information of each process. A plural pieces of related information are displayed in a related information list based on the attribute information table of certain information being processed and pieces of related information selected in the list are accessed.

Abstract: An apparatus for recording digital video images in an endless fashion. The apparatus includes (a) a video data recording mechanism, (b) a mark setting mechanism, (c) a mark management mechanism, (d) a mark erasure mechanism, and (e) a playback allowing area setting mechanism. Upon playback of endlessly recorded video images, seamless video playback can be achieved without suffering from a disorder of video images caused by playback of destroyed video data.

Abstract: When an object file is read from a recording medium by a file system, a jump table retrieving section retrieves a unit-record-area number, corresponding to the unit record area to which individual desired data of the object file is allocated or a unit-record-area number near individual desired data, from a jump table corresponding to the object file. And a unit record area retrieving section retrieves a unit record area containing the individual desired data by referring a file allocation table based on the retrieved unit-record-area number. Then an accessing section takes access to the recording medium to read out the individual data recorded in the unit record area. This system realizes high-speed retrieving of intended unit record areas when writing/reading a file to/from the recording medium.

Abstract: An information storage device stores data evenly in each of a plurality of external information-storage devices even if the number of external information-storage devices provided in the information storage system is changed. A division processing unit divides the information to be stored in the information storage devices and distributes the divided information to the information storage devices. A division control unit controls the division processing unit so as to divide the information in accordance with a number of the information storage devices. When the number of the information storage devices is changed, the division control unit controls the division processing unit so that the information stored in the information storage devices is divided by a dividing method suitable for the number of the information storage devices after being changed.

Abstract: A delivery server comprises image contents and informational data about the image contents in its storage device. From a video recorder being a client, a request to deliver image contents that a user of the video recorder desires is issued to the delivery server. At this time, the user transmits informational data about the image contents to the delivery server. The delivery server searches for the image contents of the server itself based on the informational data transmitted from the video recorder, and delivers the image contents that the user of the video recorder desires to the video recorder.

Abstract: An endless video recording apparatus for recording digital video images in an endless fashion is disclosed.

Abstract: Video data is managed in units of management blocks set in a storage area of a storage device. An access to the storage device is made in an access unit obtained for each video according to an encoding rate, etc. Additionally, a video is recorded so that only video data of the same program is recorded in one management block. As a result, an empty area can be prevented from being fragmented, and videos can be recorded even if the video data are recorded/reproduced at different encoding rates from a plurality of channels.

Abstract: The present invention relates to a file device and file access method that divides a file into units of clusters or blocks and records, and has as its object to provide a file device and file access method such that even when there is a failure and the data is not recorded correctly to the end the data that has been recorded can be accessed. When recording a file to an external storage device 102 divided among a plurality of blocks, the blocks that are to record the file are pre-allocated in the external storage device 102, management information 113 that indicates the allocated blocks is created and the management information 113 is recorded in the external storage device 102, after which the data that makes up the file is recorded in the external storage device 102.

Abstract: A technique related to a data backup for a computer. There are provided a selection section, an archive file creation section, and a backup processing section. The selection section selects data files satisfying given conditions from among data files stored in a first storage section. The archive file creation section creates N (N is a natural number) archive files by grouping the plurality of data files selected by the selection section and which repeats the archive file creation processing M (M is a natural number) times. The backup processing section stores the archive files created by the archive file creation section into a second storage section. The technique enables efficient copying of a data file in a short period of time.

Abstract: An information storage device stores data evenly in each of a plurality of external information-storage devices even if the number of external information-storage devices provided in the information storage system is changed. A division processing unit divides the information to be stored in the information storage devices and distributes the divided information to the information storage devices. A division control unit controls the division processing unit so as to divide the information in accordance with a number of the information storage devices. When the number of the information storage devices is changed, the division control unit controls the division processing unit so that the information stored in the information storage devices is divided by a dividing method suitable for the number of the information storage devices after being changed.

Abstract: When an object file is read from a recording medium by a file system, a jump table retrieving section retrieves a unit-record-area number, corresponding to the unit record area to which individual desired data of the object file is allocated or a unit-record-area number near individual desired data, from a jump table corresponding to the object file. And a unit record area retrieving section retrieves a unit record area containing the individual desired data by referring a file allocation table based on the retrieved unit-record-area number. Then an accessing section takes access to the recording medium to read out the individual data recorded in the unit record area. This system realizes high-speed retrieving of intended unit record areas when writing/reading a file to/from the recording medium.