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Kameyama, Kawasaki

Hiroaki Kameyama, Kawasaki JP

Patent application numberDescriptionPublished
20080201581Method and apparatus for storing data - According to an aspect of an embodiment, a method comprises providing a matrix comprising m rows and n columns, each of the rows and columns comprising elements of zero and one, dividing data into n data blocks, associating each of the data blocks with each of the columns, calculating an exclusive-OR of selected data blocks in reference to one of the rows, the selected data blocks being determined by the element of one in the associated columns in the one of the rows, repeating the calculating in other rows and storing separately the calculated data resulting from the exclusive-OR of data blocks in association with the associated rows, respectively.08-21-2008
20100002726DATA TRANSFER APPARATUS, DATA TRANSFER METHOD AND COMPUTER-READABLE STORAGE MEDIUM STORING A DATA TRANSFER PROGRAM - A data transfer apparatus includes a data accumulation unit to accumulate data to be transferred, an encoding matrix storage unit to store an encoding matrix for encoding data of each of a plurality of data sizes, an encoding size determination unit to determine a block of data to be transmitted in descending order of data size based on the data sizes of the data accumulated in the encoding matrix storage unit, an encoding unit to acquire an encoding matrix corresponding to the data size of the determined block form the encoding size determination unit and encode data accumulated in the data accumulation unit for each block using the acquired encoding matrix, a packet generation unit to generate a packet by adding encoding information about the encoding matrix used for encoding the encoded data, and a transmission unit to transmit the generated packet.01-07-2010
20100095108DATA TRANSFER DEVICE AND DATA TRANSFER METHOD - A data transfer device and method include obtaining a compression ratio and a compression speed of data for each of a plurality of compression levels, obtaining a compression ratio of data for each of the compression levels, adding a predicted time required for the compression and a predicted time required for the transfer of the data for each of the compression levels to determine a compression level for which the added predicted time is shortest, compressing the data to be transferred at the determined compression level and transferring the compressed to a transfer destination.04-15-2010
20100199146STORAGE SYSTEM, STORAGE CONTROLLER AND METHOD FOR CONTROLLING STORAGE SYSTEM - In a storage controller provided for a storage system provided with a plurality of disk devices, for controlling to storage data in the plurality of disk devices, an encoding unit encodes data to be stored in the plurality of disk devices by erasure correction coding to obtain encoded data. A storage/reading unit stores the encoded data in the plurality of disk devices and fetches the encoded data from the plurality of disk devices, according to instructions from a personal computer. A transmitting unit transmits the encoded data fetched from the plurality of disk devices by the storage/reading unit to a storage system 08-05-2010
20110115654DATA ENCODING PROCESS, DATA DECODING PROCESS, COMPUTER-READABLE RECORDING MEDIUM STORING DATA ENCODING PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM STORING DATA DECODING PROGRAM - In a data encoding process: data is encoded by using unit bit series obtained from an encoding bit series; the encoding bit series is searched for a first bit series identical to a portion of the encoded data; the portion is substituted with a second bit series which includes a leading code indicating a leading position of a substitution range and position information indicating the position of the first bit series in the encoding bit series. In a data decoding process: the position information is detected from the substitution range in received data after the leading code is detected in the data; a substitution bit series is extracted from the position in the encoding bit series indicated by the position information; and the data in the substitution range is substituted with the substitution bit series so as to restore the encoded data.05-19-2011

Patent applications by Hiroaki Kameyama, Kawasaki JP

Masaki Kameyama, Kawasaki JP

Patent application numberDescriptionPublished
20090231759HEAD SLIDER, HEAD ASSEMBLY AND INFORMATION STORAGE DEVICE - A head slider body includes a main body having a protruding air bearing surface, and a wall portion protruding from the air bearing surface near one end in one axial direction of the main body. Extending in the other axial direction in the air bearing surface, a groove portion extends between the wall portion and the air bearing surface in the main body. A read/write head is provided near the other end in the one axial direction of the head slider body.09-17-2009

Patent applications by Masaki Kameyama, Kawasaki JP

Shigeki Kameyama, Kawasaki JP

Patent application numberDescriptionPublished
20080284687Display apparatus - A display apparatus, that can prevent thermal destruction and burning with a simple structure, has been disclosed. In the apparatus it is judged that there is possibility of a pattern, whose area with high brightness is small, being displayed frequently, when a state in which the total light emission pulse number remains large occurs with high frequency, and if such a state is detected, the total light emission pulse number (sustain frequency) is reduced to prevent the thermal destruction and burning.11-20-2008
20100141691Display apparatus - A display apparatus, that can prevent thermal destruction and burning with a simple structure, has been disclosed. In the apparatus it is judged that there is possibility of a pattern, whose area with high brightness is small, being displayed frequently, when a state in which the total light emission pulse number remains large occurs with high frequency, and if such a state is detected, the total light emission pulse number (sustain frequency) is reduced to prevent the thermal destruction and burning.06-10-2010

Patent applications by Shigeki Kameyama, Kawasaki JP

Shuichi Kameyama, Kawasaki JP

Patent application numberDescriptionPublished
20080316725Connector, printed circuit board, connecting device connecting them, and method of testing electronic part, using them - The invention has an object of providing a connector for connecting between a printed circuit board and a test device, capable of easily attaching and detaching the connector at low cost. The connector includes at least one conducting pin 12-25-2008
20100044097Connector, printed circuit board, connecting device connecting them, and method of testing electronic part, using them - The invention has an object of providing a connector for connecting between a printed circuit board and a test device, capable of easily attaching and detaching the connector at low cost. The connector includes at least one conducting pin 02-25-2010

Patent applications by Shuichi Kameyama, Kawasaki JP