Patent application number | Description | Published |
20090063927 | SEMICONDUCTOR DEVICE AND METHOD OF CONTROLLING THE SAME - A decoding section for decoding inputted first data; a first memory for being adapted to store second data obtained by decoding the first data; a second memory for being adapted to store error information on an error in decoding of the first data; and an output section for outputting the second data, wherein when the output section reads and outputs the second data from the first memory, the output section reads and outputs, as data corresponding to an error of the first data, second data stored in the second memory and serving as a decoding result of the other part of the first data based on the error information stored in the second memory. | 03-05-2009 |
20140270538 | MOVING IMAGE PROCESSING APPARATUS, MOVING IMAGE PROCESSING METHOD, AND COMPUTER PRODUCT - A moving image processing apparatus cumulatively sums for each reference block and in a predetermined sequence, values representing differences between corresponding pixels in a first block of a reduced image of a given image and a reference block within a search range in a reduced reference image; detects a motion vector of the first block, based on a calculation result; compares the amounts of increase among intervals of the summing process when the evaluation value is calculated for the reference block represented by the motion vector; and based on the comparison, determines a sequence to be used when the evaluation value of the reference block is calculated by cumulatively summing the values that represent differences between corresponding pixels in a second block in the given image and corresponding to the first block, and in a reference block within a search range in the reference image indicated by the motion vector. | 09-18-2014 |
20150063443 | QUANTIZATION METHOD, CODING APPARATUS, AND COMPUTER-READABLE RECORDING MEDIUM STORING QUANTIZATION PROGRAM - A quantization method includes: performing, by a computer, scaling on transform coefficients of a target block; quantizing scaled transform coefficients to obtain a plurality of quantization coefficients; calculating, when calculating, based on a quantization error and a first code amount of a coded target block obtained by coding the target block, a cost of coding the target block by using a coefficient absolute value candidate of a plurality of coefficient absolute value candidates of one of the plurality of quantization coefficients, the first code amount according to a second code amount of a coded element for the one of the plurality of quantization coefficients, the second code amount being obtained by binarizing the coded element under one of a first condition and a second condition. | 03-05-2015 |
Patent application number | Description | Published |
20090292744 | SOLUTION METHOD OF IN-DOUBT STATE IN TWO-PHASE COMMIT PROTOCOL OF DISTRIBUTED TRANSACTION - A solution method of an in-doubt state in two-phase commit protocol of a distributed transaction system includes assigning a unique identifier to each log group, and registers information about a database management device having the management right of each log group in a first table, and rewriting the first table in such a way that another database management device may have a management right of a global representative log group when a management right of the global representative log group to the other database management device during an in-doubt state period of two-phase commit, and rewriting the first table in such a way that another database management device may have a management right of the global representative log group when a management right of a log group other than the global representative log group to another database management device during the in-doubt state period of two-phase commit. | 11-26-2009 |
20110173233 | DATABASE SYSTEM AND DATABASE CONTROL METHOD - A database control method comprising a first main system processing in which, upon first data being stored in a second storage unit included in a second server communicably connected with the first server, the first data is stored in a first storage unit following instructions from a host computer, a first inhibiting processing in which, upon detecting an abnormality in communication with the second server, storing the first data in the first storage unit following instructions from a host computer is inhibited, a first query processing performing a first query to an arbitrating device arbitrating between the first server and the second server, and a processing executing or stopping the first main system processing in accordance with instructions from the arbitrating device. | 07-14-2011 |
20120221537 | SOLUTION METHOD OF IN-DOUBT STATE IN TWO-PHASE COMMIT PROTOCOL OF DISTRIBUTED TRANSACTION - A distributed transaction system includes a plurality of log groups each having a unique identifier assigned thereto, a data storage device storing data and a log storage device storing a log of the data. A table is provided in each of the log groups and has registered therein information about a database management device having the management right of each of the log groups. Wherein in response to the management right of the global representative log group moving to another database management device during an in-doubt state period of the two-phase commit, the table is rewritten to reflect moving of the management right of the global representative log group. | 08-30-2012 |
Patent application number | Description | Published |
20080244290 | POWER SAVING DEVICE CONTROLLED BY CONTROLLER OR DISK - This is a disk array device comprising means for operating a plurality of controller modules or disks, means for determining the a future operating state, based on operation history of the controller module or the disk and setting means for setting an operating state of the controller module or disk in such a way as to reduce its power consumption, based on the future operating state of the controller module or disk. | 10-02-2008 |
20090063766 | STORAGE CONTROLLER AND FIRMWARE UPDATING METHOD - A storage controller and method are provided. The storage controller includes control sections including storage sections into which data transmitted from a host unit is cached, one of the control sections being a main control section which controls firmware update in the control sections. The main control section includes an instruction updater sending an update instruction to a sub control section in the control sections in which firmware is to be updated, and an area instructor requesting the sub control section to transmit area information, the sub control section including an area information obtainer obtaining, according to the instruction from the area instructor and an area information transmitter transmitting to the area instructor; and an area setter setting the location of the cache area in the storage section on the basis of the instruction. | 03-05-2009 |
20090172679 | CONTROL APPARATUS, STORAGE SYSTEM, AND MEMORY CONTROLLING METHOD - In order to more efficiently use a cache memory to realize improved response ability in a storage system, there provided are a cache memory which stores the data read from the storage apparatus, an access monitoring unit which monitors a state of access from the upper apparatus to the data stored in the storage apparatus, a schedule information creating unit which creates schedule information that determines contents to be stored in the cache memory based on the access state, and a memory controlling unit which controls record-processing of the data from the storage apparatus to the cache memory and removal-processing of the data from the cache memory based on the schedule information. | 07-02-2009 |
20100057991 | METHOD FOR CONTROLLING STORAGE SYSTEM, STORAGE SYSTEM, AND STORAGE APPARATUS - A storage apparatus comprising a logical volume composed of a plurality of storage media includes an access instruction receiving section receiving, from a server, an instruction to access the logical volume, an access executing section executing an access to the logical volume based on the access instruction, and a power supply control section which, if the logical volume to be accessed is inaccessible, changes a power supply status of a storage medium corresponding to redundancy of the logical volume. | 03-04-2010 |
20100332884 | STORAGE CONTROL APPARATUS AND METHOD - A storage control apparatus includes a controller for receiving an access command from a host computer and controlling an access to a storage device and a monitoring period obtaining section for obtaining a monitoring period corresponding to the access command. The storage device is capable of operating in one of a power saving state and a normal state. The controller causes the storage device to return from the power-saving state to the normal state if the storage device corresponding to the access command is in the power saving state, and sends the host computer a response for preventing a timeout corresponding to the access command if the storage device have not yet returned to the normal state when the monitoring period elapses from receiving the access command. | 12-30-2010 |
20110185213 | STORAGE MANAGEMENT APPARATUS, STORAGE SYSTEM, AND STORAGE MANAGEMENT METHOD - A storage management apparatus includes a memory for storing logical volume information for indicating logical volumes and priority information for determining an order of the logical volumes to be activated, a first interface for connecting storages to the storage management apparatus, at least one of the storages corresponding to one of the logical volumes, a second interface connected to a power supply unit for supplying power to the storages, and a processor for executing determining whether the power supply unit is capable of supplying power for simultaneously starting the storages corresponding to the logical volumes corresponding to an access request for accessing the logical volumes, selecting one logical volume based on the priority information when the power supply unit is incapable of supplying power for simultaneously starting the storages, and transmitting a start request for staring the storages corresponding to the selected logical volume by using the first interface. | 07-28-2011 |
20110246730 | Computer-readable medium storing storage control program, storage control method, and storage control device - A generation section periodically generates access frequency information for identifying an access frequency of each data item according to a status of write access of the data item transmitted from a host device to a storage device. Whenever access frequency information is generated by the generation section, a determination section determines whether to write data saved in a hard disk into the storage medium, or to hold a saved state of the data. A write section writes data into the storage device according to determination by the determination section. | 10-06-2011 |
20110314220 | STORAGE CONTROL APPARATUS, STORAGE SYSTEM AND METHOD - A storage control apparatus includes a controller configured to control to convert an access to logical volume into an access to associated RAID group in response to an access to the corresponding virtual volume on the basis of access conversion information, monitor frequency of access to each of logical volumes, select a logical volume on the basis of the monitored frequency of access, move data stored in a RAID group corresponding to the selected logical volume to a different RAID group corresponding to a logical volume to be a data shift destination, and update the access conversion information to convert access to the RAID group corresponding to the selected logical volume into access to the different RAID group. | 12-22-2011 |
20130080700 | RAID GROUP CONTROL DEVICE - A RAID group control device for performing access control over one or more RAID groups each having redundancy. The RAID group control device includes an acquiring unit to acquire access frequency information with respect to a RAID group among the one or more RAID groups; a scheduling unit to find a time period exhibiting a lower access frequency than access frequencies of anterior and posterior time periods in a specified time range on the basis of the access frequency information, and to determine start timing of a process of rewriting firmware of drives belonging to the RAID group on the basis of the found time period; and a firmware rewrite processing unit to start the process of rewriting the firmware of the drives at the determined start timing. | 03-28-2013 |
20130262813 | STORAGE CONTROL APPARATUS, STORAGE SYSTEM, AND STORAGE CONTROL METHOD - In a storage control apparatus, an acquiring unit acquires first information indicating the frequency of random access to a first logical region and second information indicating the data size of random access, based on the content of access from the information processing apparatus. A controlling unit determines the size of storage areas to be allocated to a second logical region based on the second information indicating the data size of random access when the first information, indicates that the frequency of random access is equal to or greater than a threshold value. The controlling unit creates the second logical region using a plurality of storage devices. The controlling unit controls access from the information processing apparatus such that the access is made to the second logical region instead of the first logical region. | 10-03-2013 |
20140082412 | STORAGE CONTROL SYSTEM, RECORDING MEDIUM STORING RECOVERY PROGRAM, AND METHOD - A storage control system includes: storage units each including a first storage area storing information and a second storage area storing management information that contains attribute information of partition information indicating how information is stored in partitions obtained by partitioning the first storage area; an obtaining unit to obtain the management information from the plurality of storage units; a determination unit to determine whether abnormal management information is present in the obtained management information by comparing the obtained management information with itself; and a recovery unit to reconfigure, when it is determined there is the abnormal management information, for each unit of partition, information stored in the first storage area of the storage unit from which the abnormal management information has been obtained by using one of the storage units from which normal management information has been obtained, based on attribute information of the normal management information in each partition. | 03-20-2014 |