Abstract: There is provided a novel halogenated zinc phthalocyanine pigment for a color filter, which can form a green color filter having excellent contrast and high luminance. A halogenated zinc phthalocyanine pigment for a color filter shows, in a Raman spectrum, a peak intensity of 3.0% or more at 716±2.2 cm?1 when a peak intensity at 650±10 cm?1 is regarded as 100%.

Abstract: A novel method for forming a positive electrode active material is provided. The method for forming a positive electrode active material includes causing a reaction between a cobalt aqueous solution and an alkaline aqueous solution to form a cobalt compound; mixing the cobalt compound and a lithium compound and performing a first heat treatment to form a first composite oxide; mixing the first composite oxide and a compound containing a first additive element and performing a second heat treatment to form a second composite oxide; and mixing the second composite oxide and a compound containing a second additive element and performing a third heat treatment. The first heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1100° C. The second heat treatment is performed at a temperature higher than or equal to 700° C. and lower than or equal to 1000° C.

Abstract: A system is provided for improving the speed for writing data in a disk array system. The disk array system includes a solid state disk storage device configured with semiconductor flash memory to sequentially store the parity for the disk array. The solid state disk storage device allows data sectors to be assigned sequentially in a cluster consisting of a set of blocks. Each block is a physical unit of erasure. Write operations for a plurality of sectors are written across the set of blocks in the cluster.

Abstract: A method and system are provided for improving the speed for writing data in a disk array system (RAID). Disks are divided into the ones for reading old data and the other ones for writing new data. An external semiconductor storage device is used as a parity device which significantly enhances performance in writing.A disk array system is used for storing data for which a parity group comprises N data units stored in sectors of N magnetic disk drives with parity stored in the parity device. At least N+1 data-storing magnetic disk drives are provided, where sectors of at least one magnetic disk drive are used as redundant sectors.

Abstract: A method and system are provided for improving the speed for writing data in a disk array system (RAID). Sectors of the disks are divided into the ones for reading old data and the other ones for writing new data. An external semiconductor storage device is used as a parity device which significantly enhances performance in writing. Preferably, a disk array system is used for storing data for which a parity group comprises N data units stored in sectors of N magnetic disk drives with parity stored in the parity device. At least N+1 magnetic disk drives are provided, where sectors of at least one magnetic disk drive are used as redundant sectors.