Abstract: According to one embodiment, an electronic device includes a storage device and a processor. The storage device includes a storage and a first nonvolatile memory configured to store first data indicative of the number of times the storage device has been turned on. The processor stores the first data as second data in a second nonvolatile memory before the storage device is turned off, and when the storage device is turned on, determines whether access to the data in the storage is permitted based on a first number indicated by the first data and a second number indicated by the second data prior to the access to the data in the storage.

Abstract: According to one embodiment, a device gives a higher priority to a user when first authentication is successfully carried out than when second authentication is successfully carried out. The device includes a nonvolatile memory which stores a first password used for the first authentication, a position detector which detects a present position of the device, a first display processor which display a first input screen for accepting a third password input when the device is activated, and a second display processor which displays a second input screen for accepting the third password input, when the third password, which is input by using an input module when the first screen is displayed, is determined to be the first password and the present position is out of the permissible range.

Abstract: One embodiment provides an information processing apparatus including: a setting module configured to allow an administrator to set usable-date/time information during which a user is allowed to use the information processing apparatus; a storage module configured to store the usable-date/time information which is set by the administrator; and a control module configured to control use of the information processing apparatus by the user based on the stored usable-date/time information.

Abstract: An information processing apparatus includes: a processor; a first auxiliary storage device that stores data; a second auxiliary storage device that is provided separate from the first auxiliary storage device at a position inaccessible to a user, the second auxiliary storage device being configured to be rewritable; and a firmware memory that stores a firmware program that is initially executed when a power of the apparatus is turned on, wherein the firmware program causes the apparatus to operate: performing an user authentication; permitting an access to the first auxiliary storage device when the user authentication is successful; and initiating an authentication failure processing program that is stored in the second auxiliary storage device to be performed by the processor when is the user authentication is unsuccessful.

Abstract: According to one embodiment, an information processing device which is configured to execute suspending and resuming, the information processing device include a display controller which generates a video signal, a first storage unit in which a program to initialize the display controller is stored, a second storage unit which stores the program stored in the first storage unit during the suspending, and an executing section which executes the program stored in the second storage unit during the resuming.

Abstract: An information processing apparatus according to the present invention includes the following: an input portion; authenticating means for performing authentication processing using authentication information input from the input portion and registered authentication information; a memory portion for storing authentication failure information when the result of the authentication processing performed by the authenticating means is failure; and a display portion for displaying the stored authentication failure information when the result of the authentication processing performed by the authenticating means is success. According to the above-described configuration, useful information for security management can be provided, as well as, a deterrent effect against unauthorized access can be raised.

Abstract: In a boot processing control method for an information processing apparatus according to this invention, the first boot device in which a medium can be loaded or a boot device different from the first boot device is designated. When a boot process cannot be executed from the first boot device in accordance with designation of the first boot device, a user is prompted to load the medium in the first boot device. After the user is prompted to load the medium in the first boot device, when the boot process of the operating system cannot be executed from the first boot device in which the user loads the medium, the boot process of the operating system is executed from the boot device different from the first boot device.

Abstract: An information processing apparatus includes a main body, an input device that is provided on the main body and inputs input data that designates one of a plurality of boot devices, a reproduction unit that reproduces data for identifying the boot device that is designated by the input data, and a unit that executes a process for booting up an operating system from the boot device that is designated by the input data.

Abstract: A reverse rotation preventing apparatus for a hydraulic actuator includes a hydraulic actuator for driving an inertia member, a main valve which is switched to a driving position in which a pressure oil is supplied to one of first and second ports of the hydraulic actuator and another one thereof is communicated with a tank and to a neutral position in which the first and second ports are shut off, a relief valve adapted to flow out a pressure oil in the first or second port to the tank at a time when a pressure on the side of the first or second port is higher than a set high pressure, a suction valve adapted to suck the pressure oil to the first or second port at a time when the pressure on the side of the first or second port is negative, and a reverse rotation preventing valve adapted to communicate the first and second port sides with the tanks respectively at a time when the pressure on the sides of the first and second ports is higher than a set pressure which is a pressure lower than the set high pres

Abstract: A hydraulic pilot valve, including a plurality of pressure reduction valve portions, each having an inlet port, an outlet port and a pressure regulating valve for establishing and blocking communication between both ports by movement of the pressure regulating valve, a plurality of pistons actuating the pressure regulating valves of the pressure reduction valve portions in the direction establishing communication, an operation lever having a pushing member pushing the plurality of pistons, and springs for biasing the pistons upwardly beyond a neutral position to retain them in an abutting relation with a pushing member. An operating lever is rocked from the neutral position in one direction to place the lever in an actuating position and push one piston to place one of the pressure reduction valve portions in a pressurized fluid supply condition to establish communication between the inlet portion and the outlet portion.

Abstract: A hydraulic pilot valve includes a valve body, first, second, third and fourth pressure reduction valves formed in the valve body and respectively having, outlet ports, inlet ports and spools for establishing and blocking communication between the ports, and an operation lever pivotally mounted on the valve body and being movable between a neutral position, a first position and a second position. When the operation lever is in the neutral position, the respective spools of the second and third pressure reduction valves are placed at positions establishing communication between the respective inlet port and outlet port. When the operation lever is in the first position, the respective spools of the first and third pressure reduction valves are placed at positions establishing communication between the respective inlet port and outlet port, and in conjunction therewith, the respective spools of the second and fourth pressure reduction valves block communication between the respective inlet port and outlet port.

Abstract: A working machine fall preventive valve apparatus is constructed with a cylinder side passage, a valve body, a check valve, a flow rate control valve, and a safety valve. The cylinder side passage is adapted to communicate with a cylinder port which is open to a cylinder side mounting surface. The valve body has a directional control valve side passage which is adapted to communicate with a directional control valve port. The check valve is provided in the valve body and prevents a pressure fluid from flowing into the directional control valve side passage from the cylinder side passage. The flow rate control valve provided in the valve body normally blocks communication between the directional control valve side passage and the cylinder side passage is responsive to an external signal for establishing the above mentioned communication. The safety valve is provided in the valve body and relieves a high pressure in the cylinder side passage.

Abstract: A highly reliable pilot valve apparatus controls the direction of the operation of an actuator by pivoting a lever (15) back and forth and to the right and left. A valve body (1) has a directional control spool (27) which shifts between a first position wherein it ensures that a pair of outlet ports (3.sub.3, 3.sub.4) communicate with a pair of main outlet ports (38, 39) in a forward direction and a second position wherein it ensures that the pair of outlet ports communicate with the pair of main outlet ports in a rearward direction. The directional control spool (27) is changed over between the first and second positions by an oil from another pair of outlet ports (3.sub.1, 3.sub.2). Alternatively, the valve body (1) can contain a pressure detecting directional control valve (61) such that in a first position a pressure sensing port (60) is connected to the inlet port (52) and in a second position the pressure sensing port (60) is disconnected from the inlet port ( 52).

Abstract: A reliable pilot valve assembly having a control lever is produced at low cost while installed without requiring any additional switch and wiring and piping work. The assembly has a main valve body (1). A spool (27) is slidably mounted in the body (1) so as to be movable between a first and a second position. The spool (27) permits the pressure oil to circulate in a forward direction through a pair of the outlet ports and a pair of main outlet ports of the assembly when the spool (1) stays in the first position, and permits the pressure oil to circulate in a reverse direction (opposite to the forward one) through the pair of the outlet ports and the pair of the main outlet ports when the spool (1) stays in the second position, the main outlet ports being connected with a hydraulic circuit.

Abstract: The object of the inventioin is to provide a pilot valve which is compact, prevents erroneous operation, and is inexpensive to manufacture. The pilot valve includes a valve body (1), inlet port (2) and outlet ports (3) formed in the valve body, spools (4) operable to interrupt/establish communication between the inlet port (2) and the outlet port (3), pistons (8) for slidably moving the spools (4), a lever (15), and a disk (14) adapted to transmit movement of the lever (15) and having a downwardly directed spherical recess (23). The valve body has a spherical projection (20) pivotably received in the spherical recess (23). A lever mounting shaft (13) is prevented from rotating about its own axis during operation of the lever.

Abstract: A community antenna broadcasting system comprises a transmitting center for broadcasting programs in physical channels, a transmission path, and one or a plurality of home terminals for receiving the programs broadcast from the transmitting center via the transmission path. The transmitting center transmits a main information which includes video and audio information for each of physical channels, and also transmits a control information which includes numbers of logical channels which are contents of the physical channels. The home terminal enters a supervision information which includes a number of a desired logical channel which corresponds to a desired program, and produces a channel selection instruction by collating the control information and the supervision information. A channel selection part is provided within the home terminal. The channel selection part receives the information via the transmission path and selects a physical channel in response to the channel selection instruction.