Abstract: A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second power source. A voltage clamping circuit constructed by switching elements and a clamping capacitor is connected to the current type switching circuit. The converter has a control circuit for cooperatively making switching elements operative so as to control a current flowing in a resonance reactor.

Abstract: The motor function estimating system 1000 has a memory unit 1260, a data processing unit 1220 (analyzing section), and a display unit 1400. The memory unit 1260 memorizes waveform data about the time change of fingers tapping motion that is obtained by a motion sensor attached to a subject person who does the fingers tapping motion that is repetition of the opening and closing motion of two fingers of one hand. The data processing unit 1220 analyzes the waveform data in the memory unit 1260. The display unit 1400 displays an analysis result. The data processing unit 1220 creates motion waveform based on waveform data, and plural characteristics based on the motion waveform. The data processing unit 1220 creates a motion disorder synthesis value that represents degree of motion disorder of the subject person by revising each of the plural characteristics based on characteristics of every age and synthesizing them.

Abstract: To provide a smaller and more efficient switching power supply, the switching power supply includes: a high frequency transformer; a primary side switching circuit adapted to switch a current flowing through a primary winding of the high frequency transformer to thereby generate predetermined voltages in a secondary winding and an auxiliary winding of the high frequency transformer; a secondary side rectifier adapted to rectify a voltage generated in the secondary winding to supply the rectified voltage to a load; a charging circuit adapted to rectify a current flowing through the auxiliary winding and to switch the rectified current to thereby charge a secondary battery at a constant current; and a switch, provided between the secondary battery and the load, which supplies, when the voltage supplied to the load is interrupted, the voltage of the secondary battery to the load without going through the high frequency transformer.

Abstract: A storage control device uses write management information that manages locations of the occurrence of writing in one or more first storage devices in order to specify one or more locations where writing has occurred, and backs up one or more data elements stored in one or more specified locations to a second storage device. In order to perform a restore operation, write management information at the time of a backup is stored, and data elements stored in the second storage device are restored to one or more locations specified from the write management information at that time of backup, or to one or more new locations specified from new write management information indicating one or more new locations corresponding to the one or more locations.

Abstract: A bi-directional DC-DC converter has a transformer for connecting a voltage type full bridge circuit connected to a first power source and a current type switching circuit connected to a second power source. A voltage clamping circuit constructed by switching elements and a clamping capacitor is connected to the current type switching circuit. The converter has a control circuit for cooperatively making switching elements operative so as to control a current flowing in a resonance reactor.

Abstract: A DC backup power supply system having a plurality of loads to which AC from a commercial power source is supplied, and DC power storage means for supplying DC power to the plurality of the loads at the time of a power outage of the commercial power source, said DC backup power supply system including: a control circuit having a first DC backup output for supplying a power from the DC power storage means to the plurality of the loads, including a specific load, only during the power outage of the commercial power source, and a second DC backup output for continuously supplying a power from the DC power storage means to the specific load regardless of the power outage of the commercial power source or sound operation thereof, the control circuit supplying the respective powers from the same DC power storage means to the first and second DC backup outputs.

Abstract: A bidirectional DC-DC converter 10 has smoothing capacitors Cs1 and Cs2, a smoothing reactor Ls, resonant reactors Lr1 and Lr2, and a resonant capacitor Cr, as well as insulated gate bipolar transistors (IGBTs) Q1, Q2, and Q3 to which buffer capacitors C1, C2, and C3 are connected in parallel and diodes D1, D2, and D3 are connected in a back-to-back configuration. After part of the energy stored in the smoothing reactor Ls and/or resonant reactors Lr1 and Lr2 draws charges in the buffer capacitor C3 and is stored in the resonant capacitor Cr, the energy is stored in the resonant reactors Lr1 and Lr2. The energy is used to draw charges in the buffer capacitors C1 and C2, achieving soft switching of IGBTs Q1, Q2, and Q3.

Abstract: An LU management table 61 that associates and stores the LU# of the P-Vol 10p and the LU# of the S-Vol 10s is provided. The CPU 53 specifies the LU# of the S-Vol 10s constituting the save source of the data with respect to the magnetic tape cartridge 74, acquires the LU# of the P-Vol 10p associated with the specified LU# from the LU management table 61, reads the saved data from the magnetic tape cartridge 74 storing the data by means of the magnetic tape drive 71, and stores the data read from the magnetic tape cartridge 74 to the P-Vol 10p with the acquired LU#. As a result, the data can be restored easily and properly to the P-Vol 10p.

Abstract: An optical disc manufacturing apparatus (46) recording a BCA code constituted by plural marks and including a secret code which is modulated in a range capable of recognizing a position in a radial direction of an optical disc and/or a position in a track direction of the plural marks as the BCA code, a BCA history database (44) storing a history including a correspondence between the BCA code of an optical disc (1a) recording the BCA code and the secret code, and a management center (30) reading the BCA code and the secret code recorded on the optical disc so as to compare both on the basis of input of the correspondence between the BCA code and the secret code stored in the BCA history database (44) are employed, whereby an illegally manufactured optical disc (1z) can be easily found by inspecting the recorded BCA code and secret code.

Abstract: An object of the invention is to provide a small and low-cost switching power supply unit with a backup function in which a proper circuit construction can be selected by simple method when it is necessary to compensate for the instantaneous drop or power failure and a disk array system having the switching power supply unit. To accomplish the object, a backup unit which can insert and pull out its hot line into a switching power supply unit casing and has a secondary battery and its state monitoring/control unit is built in the unit, and proper charge/discharge management of the secondary battery can be made. When the backup unit is unnecessary, a backup unit formed by a plurality of capacitors whose hot lines can be similarly inserted and pulled out can be built in an enclosing space of the backup unit.

Abstract: Differential management information that is information representing the difference between a logical volume and a sequential device group after a full backup is updated in response to an update of the logical volume. Partial data that are data representing the difference between the logical volume and sequential device group are specified by using the updated differential management information, information necessary for restoration that is necessary to restore the data group located in the updated logical volume by using the partial data is recorded in the sequential device group, and the partial data are backed up from the updated logical volume into the sequential device group.

Abstract: One or more random access-type storage devices comprise a volume group and a journal volume. The volume group contains a volume pair configured from a primary volume and a secondary volume. Whenever data is received from a host device, this received data is written in the primary volume, a journal containing the write sequence of the data and the data is produced, and the journal is written in a journal volume. A plurality of journals accumulated in a journal volume are written in a sequential access-type storage device. Based on the write sequence recorded in each of the plurality of journals recorded in the sequential access-type storage device, the data of the journals is restored to the primary volume for storing the data and to a secondary volume from which the volume pair is configured.

Abstract: To provide a power supply apparatus having high control resolution of an output power. A PWM signal generating circuit includes: a non-inverting element 31, and an inverting element 32; and further includes a counter 11 for performing count operation in response to rising of a clock signal, a counter 12 for performing count operation in response to falling of the clock signal, comparison circuits 21, 22, and a multiplexer 20. These circuit elements are controlled by PWM control means 10. As another circuit element, the PWM signal generating circuit includes a logical sum element 33. The PWM signal generating circuit serves to arbitrarily change both period and logic “H” time of a PWM signal to be outputted at a time interval which is one half of the clock period. Thus, there is provided a power supply apparatus in which resolution of a PWM signal has been improved within a broad duty range, and fine control of an output power has been performed within a broad output power range.

Abstract: A backup power supply is so constructed that it is provided with multiple DC backup power supplies 111 to 11N, each containing nickel-metal hydride battery, stored upright on the bottom of the disk array unit 100; cooled by cooling air through the vents 1011 for ventilation from the bottom to the top; and connected with the output of the AC/DC converters 121, 122 with the backboard 151. Very compact disk array unit with an uninterruptible power supplying function can be realized.

Abstract: To achieve stable, high capacity, high speed recording. Of two light beams emitted from a light irradiation means, one or two beams are made pass through an optical path changeable member whereof at least one of the thickness and refractive index changes continuously or in two or more steps immediately after emission from the light irradiation means, so that a difference is introduced into the optical path length of the two beams, and the focusing point of one beam is made to vary to coincide with a position in the recording layer used for playback or recording. Another light beam is used for servo. Converging of light during recording or read of a multilayer recording medium is performed with higher precision than in the prior art, so higher density, higher capacity recording/playback can be performed.

Abstract: A plurality of virtual disks that emulate disk devices and a controller for controlling data access commands from a host are provided. The controller reserves a disk space on one or more disk devices with respect to a designated virtual disk among the plurality of virtual disks, reads data to the disk space from a target tape medium constituting a tape medium that corresponds with the designated virtual disk among the plurality of tape media and, when a data access command to the designated virtual disk is received from the host, performs data access to the disk space, not to the target tape medium 132.

Abstract: An optical disc manufacturing apparatus (46) recording a BCA code constituted by plural marks and including a secret code which is modulated in a range capable of recognizing a position in a radial direction of an optical disc and/or a position in a track direction of the plural marks as the BCA code, a BCA history database (44) storing a history including a correspondence between the BCA code of an optical disc (1a) recording the BCA code and the secret code, and a management center (30) reading the BCA code and the secret code recorded on the optical disc so as to compare both on the basis of input of the correspondence between the BCA code and the secret code stored in the BCA history database (44) are employed, whereby an illegally manufactured optical disc (1z) can be easily found by inspecting the recorded BCA code and secret code.

Abstract: A second storage system (SS2) comprises a plurality of tapes, a first storage device capable of performing random access at a rate higher than the tapes, and a virtual storage device emulating the first storage device. A first storage system (SS1) comprises a second storage device and a third storage device that has the virtual storage device mapped therewith. The SS2 reserves a storage space on the first storage device and reads data from the tape corresponding to the virtual storage device into the storage space. The SS1 performs copying between the second storage device and third storage device and, in this process, sends a command for access generated in the third storage device to the virtual storage device. When receiving the Access Command corresponding to the virtual storage device, the SS2 accesses the storage space.

Abstract: An object of the invention is to provide a transfer system, initiator device, and data transfer method that can improve data transfer-related performance by fully utilizing a high-speed interface even when transferring data between devices that execute data processing at different speed. The invention provides a transfer system including: an initiator device, plural target devices, and a switch for switching data transfer targets between the initiator device and target devices, wherein either the initiator device or the target devices are connected to the switch via a high-speed interface and the other is connected to the switch via a low-speed interface, and the initiator device has a control unit for determining the data transfer length of data transferred to a first target device in the target devices according to the status of data transfer to the other target device(s) when transferring data between the initiator device and the first target device.

Abstract: An uninterruptible power system for inputting an AC power, converting the AC power into a desired power, supplying the desired power to a load, and upon occurrence of an AC failure, converting a DC power from energy accumulation means into the desired power and supplying the desired power to the load, wherein the DC power from said energy accumulation means is passed through two serially connected boost means, and thereafter the power is converted into the desired power to be supplied to the load, wherein first boost means of the two serially connected boost means, which is nearer to the energy accumulation means, raises the DC electric power from said energy accumulation means to supply second boost means of the two serially connected boost means when supply of electric power is interrupted, and lowers inputted electric power for charging the electric accumulation means during an ordinary operation.