Abstract: A digital signage control device includes a display controller that displays information on a digital signage installed in the vicinity of a predetermined road, a target vehicle detector that detects a target vehicle located in a predetermined range on the road in which an occupant visually recognizes the digital signage, and a visual recognition frequency information acquisition unit that acquires visual recognition frequency information on a frequency at which the occupant of the target vehicle visually recognizes the information on the digital signage. The display controller changes content of information to be displayed on the digital signage according to the visual recognition frequency information.

Abstract: An information processing apparatus includes a vehicle movement history information storage unit that stores vehicle movement history information concerning a movement history including position information and clock time information of each of a plurality of vehicles, a terminal movement history information storage unit that stores terminal movement history information concerning a movement history including position information and clock time information of each of a plurality of mobile terminals, and a vehicle specifying unit that specifies one or more vehicles having a possibility of being boarded by a user of each mobile terminal, from among the vehicles, based on the vehicle movement history information and the terminal movement history information.

Abstract: A digital signage control device includes a display controller that displays information on a digital signage installed in the vicinity of a predetermined road, a target vehicle detector that detects a target vehicle located in a predetermined range on the road in which an occupant visually recognizes the digital signage, and a visual recognition frequency information acquisition unit that acquires visual recognition frequency information on a frequency at which the occupant of the target vehicle visually recognizes the information on the digital signage. The display controller changes content of information to be displayed on the digital signage according to the visual recognition frequency information.

Abstract: A digital signage control device includes: a display controller configured to display predetermined information on a digital signage disposed around a predetermined road; a target vehicle detector configured to detect a vehicle located in a predetermined range on the road; and a work load information acquisition unit configured to acquire work load information regarding a work load state of an occupant of the vehicle. The predetermined range on the road is a range in which the occupant of the vehicle visually recognizes the digital signage. The display controller changes the amount of predetermined information to be displayed on the digital signage according to the work load information.

Abstract: A digital signage control device includes: a traffic condition related information acquiring unit configured to acquire the traffic condition related information on traffic conditions near each of a plurality of digital signages; and a display control unit configured to: cause the plurality of digital signages to display advertisement information, and switch a digital signage on which the advertisement information is displayed among the plurality of digital signages based on traffic condition related information.

Abstract: An information providing device includes: a target vehicle detecting unit configured to detect a vehicle which is located near an information display object displaying information; and an information providing unit configured to provide information related to the information displayed on the information display object to at least one of a user in the vehicle and a user who is likely to be in the vehicle when the vehicle detected by the target vehicle detecting unit has passed near the information display object.

Abstract: An information providing device includes: an utterance contents acquiring unit configured to acquire contents of utterance; a feature word extracting unit configured to extract a feature word; an utterance-time information acquiring unit configured to acquire information on a position or a destination of the vehicle when the feature word has been uttered; an utterance number counting unit configured to count the number of times of utterance of each of a plurality of different words for each of position indicators; a current information acquiring unit configured to acquire information on a position or a destination of a predetermined target vehicle; and an information providing unit configured to provide information to the user based on the counting results of the position indicator corresponding to the position of the target vehicle or the destination indicator corresponding to the destination of the target vehicle from the utterance number counting unit.

Abstract: A user guidance system includes a departure point acquisition unit that acquires departure point information, a destination acquisition unit that acquires destination information, a candidate route generation unit that generates a plurality of candidate routes, a point resource acquisition unit that acquires point resource information, a desire information acquisition unit that acquires desire information indicating a via point desired by the attraction desirer, a non-desire information acquisition unit that acquires non-desire information indicating a via point not desired by the attraction desirer, a point calculation unit that calculates a point that is imparted to the candidate route, or a via route or the via point included in the candidate route, and a point providing unit that provides point information indicating the point that is imparted to the candidate route or the via point included in the candidate route to a user.

Abstract: An information processing system providing archive/backup support with privacy assurances by encrypting data stored thereby. Data generated on a source system is encrypted, the key used thereby is separately encrypted, and both the encrypted data and encrypted key are transmitted to and maintained by a data repository system. The repository system receives only the encrypted data and key, while the source system retains the ability to recover the key and in turn, the data. The source system is therefore assured of privacy and integrity of the archived data by retaining access control yet is relieved of the physical management of the warehousing medium.

Abstract: A method for the administration of a differential file backup system in a client-server system is disclosed in which the various component files that comprise a backup file are read from a first memory device of the file backup system to a second memory device and processed by the server. The server processes the various file components, or archive files in which the various file components reside, to reduce the number of access points across the first memory device to enhance the efficiency of the file retrieval, file reconstruction, and file restore operations of the backup file system.

Abstract: A database of known commercial software programs ("Products") is maintained and employed as a template for selection of files for a backup operation. In particular, files which are part of known Products may be excluded during backup operations. Records indicating rules about which files within Product directories are included and excluded from the backup operation are also maintained in the database. Product directories may be determined from a registry or the hard disk may be scanned and directories checked against a list of known Product default directories. If the newly found directory does not match an entry in the list of default directories, then file list codes in the database are checked against the files in the directory to determine whether known Product files are present in the directory. Two types of exclusion commands are employed to identify files for exclusion from the backup operation by exploiting file creation and modification dates.

Abstract: File comparison employs a single function F to calculate a digital signature from data in a sliding window. The digital signature is both incrementally computable and position sensitive. In particular, F is computable without reprocessing each byte in the array when the window is advanced and facilitates detection of such changes as transposed bytes of data. The function F is defined by two qualities. First, for F(A+B), where A is an array, F(A+B)=F(A)+F(B). Second, given a concatenation operator "!" such that "0!A" indicates an array A with 0 inserted before A, the function F has the property that there is a function G such that F(0!A)=G(F(A'0)). Both polynomials and cyclic redundancy checks ("CRC") may be used as that class of function.

Abstract: A information processing system providing archive/backup support with privacy assurances by encrypting data stored thereby. Data generated on a source system is encrypted, the key used thereby is separately encrypted, and both the encrypted data and encrypted key are transmitted to and maintained by a data repository system. The repository system receives only the encrypted data and key, while the source system retains the ability to recover the key and in turn, the data. The source system is therefore assured of privacy and integrity of the archived data by retaining access control yet is relieved of the physical management of the warehousing medium.

Abstract: High performance backup of a computer system includes backing up changed portions of files and selectively choosing files for backup. Files are treated as a collection of blocks, and only those blocks which have changed since a previous backup are transmitted to a backup system. Prior to selecting blocks for backup, files are selectively chosen by excluding previously archived files such as commercial software, and excluding other non-critical applications and data based on, inter alia, commonality, modification date and a list of files which are already present in the backup system. Files may also be pre-loaded into a backup system in anticipation of their presence in the computer system to be backed up.