Hitachi Information & Telecommunication Engineering Ltd. Patent applications |
Patent application number | Title | Published |
20150378614 | STORAGE APPARATUS AND METHOD FOR CONTROLLING STORAGE APPARATUS - Upon receipt of an I/O request instructing storage of data in a storage device | 12-31-2015 |
20150356109 | STORAGE APPARATUS AND DATA MANAGEMENT METHOD - The present invention relates to a storage apparatus that executes de-duplication processing. Specifically, a storage apparatus includes a storing apparatus configured to provide a first storage area and a second storage area and a control unit. The control unit determines, on the basis of a result of comparison of a compression ratio of compressed data with a threshold, whether first duplication determination for determining whether data same as the data compressed without being stored in the first storage area is stored in the second storage area is executed or second duplication determination for determining whether data same as the data compressed after being stored in the first storage area is stored in the second storage area is executed. Further, the control unit changes the threshold on the basis of a state of the storage apparatus. | 12-10-2015 |
20150339199 | STORAGE DEVICE TO BACKUP CONTENT BASED ON A DEDUPLICATION SYSTEM - Chunks that commonly occur in each content type are aggregated in a first container. To be more specific, a storage device used for content backup is configured with: (1) a memory device that provides a memory region for one or a plurality of first containers used to store first chunks that commonly occur in each content type among chunks extracted from the contents of writing targets, and for one or a plurality of second containers used to store other chunks than the first chunks; and (2) a backup unit that decides whether each of the chunks extracted from the contents of the writing targets is a first duplication chunk duplicating a chunk stored in the first container, and further decides, for only a chunk that is decided not to be the first duplication chunk, whether each of the chunks is a second duplication chunk duplicating a chunk stored in the second container, and then stores only a chunk that is decided not to be the second duplication chunk in the second container. | 11-26-2015 |
20150220554 | DATA DUPLICATION DETECTION SYSTEM AND METHOD FOR CONTROLLING DATA DUPLICATION DETECTION SYSTEM - Accurate and efficient detection of data duplication is implemented. A data duplication determination part ( | 08-06-2015 |
20150142755 | STORAGE APPARATUS AND DATA MANAGEMENT METHOD - A control unit of a storage apparatus divides received data into one or more chunks and compresses the divided chunk(s); and regarding the chunk whose compressibility is equal to or lower than a threshold value, the control unit does not store the chunk in the first storage area, but calculates a hash value of the compressed chunk, compares the hash value with a hash value of another data already stored in the second storage area and executes first deduplication processing; and regarding the chunk whose compressibility is higher than the threshold value, the control unit stores the compressed chunk in the first storage area, reads the compressed chunk from the first storage area, calculates a hash value of the compressed chunk, compares the relevant hash value with a hash value of another data already stored in the second storage area, and executes secondary deduplication processing. | 05-21-2015 |
20150060421 | LASER ANNEALING APPARATUS AND LASER ANNEALING METHOD - Metal is locally heated to a predetermined temperature within a predetermined time. | 03-05-2015 |
20140205198 | IMAGE ENCODING APPARATUS - An image encoding apparatus is provided which realizes an encoding process at a high bit rate without degradation in image quality at boundary parts within a picture. The image encoding apparatus | 07-24-2014 |
20140177710 | VIDEO IMAGE COMPRESSION/DECOMPRESSION DEVICE - An image compression/decompression device achieving increased utilization efficiency of the memory bandwidth in the access to the memory used for the compression/decompression operation while maintaining ill effect on the images at a low level is realized. The image compression/decompression device comprises a data conversion unit which reduces the data access rate when original images (as input images at the time of performing the compression) and reference images (used for performing the interframe prediction) are stored in the memory by accessing the memory. The access to the memory is performed in an address sequence (order) that differs between data write and data read. This makes it possible to increase the utilization efficiency of the memory bandwidth, and further to reduce the capacity of the buffer memory used for the data read. | 06-26-2014 |
20140164451 | FILE MANAGEMENT SYSTEM, METHOD AND COMPUTER PROGRAM - A file management system that provide a record file rapidly to a terminal, request source, by saving a record file to a storage device set at the local area, and to make it possible to refer it. A first device creates the record file and attribute information indicating the attribute about the record file, stores the record file in a first storage unit, and transmits the attribute information to the second device through the network. A second device receives the attribute information and the record file transmitted from the first device and stores them in a second storage unit. The terminal requests to acquire the record file based on the acquired attribute information to the first device or the second device. The first device or the second device transmits the record file requested to the terminal. | 06-12-2014 |
20140164450 | FILE MANAGEMENT SYSTEM, METHOD AND COMPUTER PROGRAM - A file management system that transmits a record file of voice data or image data created by a local device to a center device over a network and manages the record file in the center device. A first device creates the record file and attribute information indicating the attribute about the record file, stores the record file in a first storage unit, and transmits the attribute information to the second device through the network. A second device receives the attribute information transmitted from the first device and stores it in a second storage unit. The second device receives the record file transmitted from the first device according to transfer condition that is beforehand determined and store it in the second storage unit. A terminal may acquire the record file by using the attribute information. | 06-12-2014 |
20140161238 | FILE MANAGEMENT SYSTEM, METHOD AND COMPUTER PROGRAM - A file management system that transmits a record file of voice data or image data created by a local device to a center device over a network and manages the record file in the center device. The center device receives attribute information about the record file, including the ID of the record file, which is created in the local device, further acquires extended attribute information associated with the attribute information from a PBX, call control server, or customer server, stores management table including the attribute information and the extended attribute information. The extended attribute information of the record file suggests frequency of the reference for the record file in the local device. The center device decides the timing of the upload request for the record file based on the extended attribute information of the record file. | 06-12-2014 |
20140117936 | POWER STORAGE SYSTEM - A power storage system is provided with a battery and a battery charger which charges a battery pack having a battery voltage and current detection circuit. A charge circuit is structured such as to acquire terminal voltage information of the battery from a battery voltage detection circuit of the battery pack in a charging process, carry out a constant current charge control in a state in which the terminal voltage of the battery is equal to or lower than a previously determined reference voltage value of the battery, and switch to a constant voltage charge control maintaining the output voltage of the charge circuit in the case that the terminal voltage of the battery goes beyond the reference voltage value, thereby carrying on the charge until the battery is fully charged. Therefore, the power storage system can accurately charge the battery to a prescribed amount safely. | 05-01-2014 |
20140117756 | POWER STORAGE SYSTEM AND POWER SOURCE SYSTEM - A power storage system is provided with charge switches, discharge switches, a bidirectional DC/DC converter and a power storage system controller connecting all the battery packs to an external circuit to achieve parallel charge and discharge, and the power storage system starts the charge by setting a rated charge current value per one battery pack to Iset and setting the rated charge current value Iset as an initial value of a charge current command value Iref(1), thereafter monitor the charge current of each of the battery packs after elapse of a predetermined time so as to subtract its maximum value Ibmax(1) from the charge current command value Iref(1), and add the rated charge current value Iset to result of subtraction Ierr (Iref(1)−Ibmax(1)) so as to set as a new charge current command value Iref(2) and carry out pre-charge in such a manner as to carry on the charge. | 05-01-2014 |
20140104907 | Power Supply Unit and Operating Method of the Same - A highly efficient power supply unit compatible with a single-phase three-wire system and an operating method of such a power supply unit are provided. The power supply unit includes first and second switching legs connected in parallel to a first capacitor leg with a DC power supply connected thereto. One end of the second capacitor leg is connected to the middle point of the first switching leg through a first inductor, and the other end is connected to the middle point of the second switching leg through a second inductor. The two ends of the second capacitor leg and the middle point of the second capacitor leg are defined as AC terminals. A switch is provided between middle points of first and second capacitor legs. A control part sets the switch to OFF when power is input/output only between one end of the second capacitor leg and the other end. | 04-17-2014 |
20140092639 | BIDIRECTIONAL DC-DC CONVERTER AND CONTROL METHOD THEREOF - Disclosed is a small-size, high-efficiency, isolated, bidirectional DC-DC converter. The bidirectional DC-DC converter includes a transformer in which windings are magnetically coupled, switching circuits, a diode which is connected in parallel with a switch, smoothing capacitors, and a control section. First and second DC power supplies, which are connected in parallel with the smoothing capacitors, respectively, provide bidirectional electrical power transfer. When electrical power is to be transferred from the first DC power supply to the second DC power supply, the switch is maintained in the ON state. When, on the other hand, electrical power is to be transferred from the second DC power supply to the first DC power supply, the switch is maintained in the OFF state to prevent a reverse electrical power flow from the first DC power supply. | 04-03-2014 |
20140089353 | FILE MANAGEMENT SYSTEM AND METHOD, AND FILE MANAGEMENT PROGRAM - In a file management system that a record file created in a local place is managed in a center, a local device creates a record file of voice data or image data, creates an attribute file indicating the attribute of the record file, stores the record file in a local storage and transmits first the attribute file to a center device. The center device registers information on the attribute file including information indicating the location of the record file into a management table. Then, the local device transmits the record file to the center device in a time zone that a network load is small. When the record file corresponding to the received attribute information is received, the center device changes the storage location of the record file in the management information in the management table. | 03-27-2014 |