Abstract: An information processing apparatus that is connected to a storage device that stores a file includes processing circuitry. The processing circuitry is configured to receive an instruction of an end process during execution of a predetermined process related to the file, determine, after the predetermined process is completed, whether the instruction of the end process was received during the execution of the predetermined process, and execute the end process after it is determined that the instruction of the end process was received.

Abstract: An information processing apparatus includes circuitry that retains firmware and performs processing based on the firmware, receives a command from an external device, and transmits a predetermined response to the external device as processing of the firmware in a case where the received command is a predetermined authentication command.

Abstract: According to one aspect of the disclosure, there is provided a storage device that includes: a storage medium; and circuitry that reads identification information stored on an integrated circuit card (IC card), and performs authentication using the identification information read by the circuitry and basic identification information stored in a specific area of the storage medium.

Abstract: There is provided a magnetic disk device including a magnetic disk, and circuitry configured to receive a control command for instructing to write data in the magnetic disk or to rear the data from the magnetic disk, perform a data access process of writing the data in the magnetic disk or reading the data from the magnetic disk according to the received control command, specify a data amount of object data of the data access process, calculate a cumulative value of the data amount of the object data from a start of an operation, and perform notification when the cumulative value is equal to or larger than a predetermined threshold.

Abstract: There is provided a magnetic disk device including a magnetic disk, and circuitry configured to receive a control command for instructing to write data in the magnetic disk or to rear the data from the magnetic disk, perform a data access process of writing the data in the magnetic disk or reading the data from the magnetic disk according to the received control command, specify a data amount of object data of the data access process, calculate a cumulative value of the data amount of the object data from a start of an operation, and perform notification when the cumulative value is equal to or larger than a predetermined threshold.

Abstract: An information processing apparatus includes circuitry that retains firmware and performs processing based on the firmware, receives a command from an external device, and transmits a predetermined response to the external device as processing of the firmware in a case where the received command is a predetermined authentication command.

Abstract: According to one aspect of the disclosure, there is provided a storage device that includes: a storage medium; and circuitry that reads identification information stored on an integrated circuit card (IC card), and performs authentication using the identification information read by the circuitry and basic identification information stored in a specific area of the storage medium.

Abstract: An object of the present invention is to provide a chain structure which has a simple construction and can prevent a chain from being detached from a gear tooth of a sprocket wheel due to a great wave force and prevent the chain and a flight plate from dropping so as to break members of the chain and the flight plate and the other portions of the chain structure. For accomplishing the object in a chain structure (40) provided with a sprocket wheel (6) in which a plurality of gear teeth capable of engaging with a chain (42) are formed in an outer peripheral portion, and the chain (42) in which a pair of side plate members (18, 20, 44) facing to each other are coupled in an endless manner at plural sets in a length direction.

Abstract: An object of the present invention is to provide a chain structure which has a simple construction and can prevent a chain from being detached from a gear tooth of a sprocket wheel due to a great wave force and prevent the chain and a flight plate from dropping so as to break members of the chain and the flight plate and the other portions of the chain structure. For accomplishing the object in a chain structure (40) provided with a sprocket wheel (6) in which a plurality of gear teeth capable of engaging with a chain (42) are formed in an outer peripheral portion, and the chain (42) in which a pair of side plate members (18, 20, 44) facing to each other are coupled in an endless manner at plural sets in a length direction.

Abstract: A RAM disk driver 112 receives the user's specification for the capacity of a RAM disk 122 via an operation screen image 10 (step S20). The RAM disk driver 112 sets a continuous region in an OS invisible area, which is beyond management of an operating system installed in a computer, on a RAM 120 for a storage area of the RAM disk 122 having the user's specified capacity (step S30). When the user's specified capacity is greater than the capacity of the OS invisible area on the RAM 120, the RAM disk driver 112 reduces the range of an OS visible area, which is managed by the operating system, on the RAM 120 and sets the storage area of the RAM disk 122 in the expanded OS invisible area. This arrangement effectively boosts up access to the RAM 120 as the primary storage in the computer.

Abstract: After an initialization process (S10), the access controller of the external storage device performs authentication using a password (S20, S30). If authentication is successful, the successfully authenticated state is saved, and the host computer is notified that the HD storage portion is accessible (S40). Subsequently, it is decided whether SOF packets are being periodically sent from the host computer (S50), and if periodic sending has been interrupted (S50: NO), the connection to the host computer will be deemed lost, and the saved authenticated state will be deleted (S60).

Abstract: A peripheral device of the invention is capable of data communication with a host device via one of a first-type interface and a second-type interface having different data communication-related specifications. The peripheral device has a single connector for making electric connection selectively with a first-type connector or a second-type connector. The peripheral device also has a controller for performing an initial connection process that makes a logical connection between the peripheral device and the host device via the first-type interface or the second-type interface. While the physical connection is maintained, the controller breaks the logical connection established by the initial connection process and subsequently makes another logical connection between the peripheral device and the host device.

Abstract: An electronic device has: an operation unit; a power supply unit; an input changeover switch; and a controller. The power supply unit is supplied commercial power and supplies the operating power to the operation unit. The input changeover switch switches between supplying or not supplying the commercial power to the power supply unit. The controller controls the input changeover switch. The controller includes: a power input portion; a control signal input portion; and a switching signal output portion. When the device power is being supplied from a master electronic device to the power input portion and the control signal from the master electronic device is received by the control signal input portion, the switching signal output portion outputs to the input changeover switch a signal instructing to switch and supply the commercial power to the power supply unit.

Abstract: Provided is a peripheral device including: a connection portion capable of selectively connecting to multiple types of connectors corresponding to multiple types of interfaces, the connection portion including a power terminal for receiving a supply of power from a host device via a connector; a control section for initiating, upon receiving a supply of power, a connection process to form a logical connection with the host device by using any one of the multiple types interfaces; a power line connecting the control section and the terminal; and a delay process section for delaying supply of power to the control section having started by the connector being connected to the connection portion, for a predetermined time, the delay process section being disposed along the power line.

Abstract: A peripheral device of the invention is capable of data communication with a host device via one of a first-type interface and a second-type interface having different data communication-related specifications. The peripheral device has a single connector for making electric connection selectively with a first-type connector or a second-type connector. The peripheral device also has a controller for performing an initial connection process that makes a logical connection between the peripheral device and the host device via the first-type interface or the second-type interface. While the physical connection is maintained, the controller breaks the logical connection established by the initial connection process and subsequently makes another logical connection between the peripheral device and the host device.

Abstract: A RAM disk driver 112 receives the user's specification for the capacity of a RAM disk 122 via an operation screen image 10 (step S20). The RAM disk driver 112 sets a continuous region in an OS invisible area, which is beyond management of an operating system installed in a computer, on a RAM 120 for a storage area of the RAM disk 122 having the user's specified capacity (step S30). When the user's specified capacity is greater than the capacity of the OS invisible area on the RAM 120, the RAM disk driver 112 reduces the range of an OS visible area, which is managed by the operating system, on the RAM 120 and sets the storage area of the RAM disk 122 in the expanded OS invisible area. This arrangement effectively boosts up access to the RAM 120 as the primary storage in the computer.

Abstract: When a hard disk drive 200 is initially connected, the CPU 110 of a personal computer 100 assigns respective drive letters to a virtual CD-ROM drive area 222 and a hard disk drive 224 in the hard disk drive 200, and records information relating the drive letter assignments as drive letter information in the registry. The CPU 110 then executes auxiliary application software stored in the virtual CD-ROM drive area 222 to delete and disable assignment of a drive letter to the virtual CD-ROM drive area 222.

Abstract: A storage device with an authentication feature providing enhanced convenience during locking. The device is a USB hard disk designed for connection to a personal computer, and includes a disk, an access controller, and a push-button. The access controller includes an encryption/decryption module 35; and, as functions executed by the CPU, an authentication module, an authenticated status holding module, and a decryption restricting module. When the push-button is depressed (S210: YES), the access controller resets itself (Step S220). When the access controller is reset, the startup control routine is executed again, and the access controller enters the locked state requiring password authentication by an operator.

Abstract: After an initialization process (S10), the access controller of the external storage device performs authentication using a password (S20, S30). If authentication is successful, the successfully authenticated state is saved, and the host computer is notified that the HD storage portion is accessible (S40). Subsequently, it is decided whether SOF packets are being periodically sent from the host computer (S50), and if periodic sending has been interrupted (S50: NO), the connection to the host computer will be deemed lost, and the saved authenticated state will be deleted (S60).

Abstract: The external storage device has a read-only section and a read/write enabled section in a storage section. In the read-only section there is stored an antivirus software detection program adapted to detect the presence of antivirus software installed on a host computer. When the external storage device is connected to the host computer, the antivirus software detection program will be executed automatically by the host computer. When a storage section access controller provided to the external storage device receives from the antivirus software detection program a notification that the presence of antivirus software has been detected, it will allow writing to the read/write enabled section.