Abstract: A storage control apparatus includes a processor that creates a snapshot of a first volume of a storage device. The processor deduplicates unupdated data among data of the first volume. The processor compresses the deduplicated data to create compressed data. The processor stores the compressed data in a second volume of the storage device. The processor selects, when the snapshot is created for two or more generations, the second volume corresponding to each of a plurality of snapshots of generations earlier than a predetermined generation. The processor detects unpopular data from the compressed data existing in the selected second volume based on a reference count. The processor collects and decompresses detected pieces of the unpopular data when the number of the detected pieces of the unpopular data is equal to or more than a predetermined threshold value. The processor combines and recompresses the decompressed data to create recompressed data.

Abstract: A storage control apparatus includes a processor that creates a snapshot of a first volume of a storage device. The processor deduplicates unupdated data among data of the first volume. The processor compresses the deduplicated data to create compressed data. The processor stores the compressed data in a second volume of the storage device. The processor selects, when the snapshot is created for two or more generations, the second volume corresponding to each of a plurality of snapshots of generations earlier than a predetermined generation. The processor detects unpopular data from the compressed data existing in the selected second volume based on a reference count. The processor collects and decompresses detected pieces of the unpopular data when the number of the detected pieces of the unpopular data is equal to or more than a predetermined threshold value. The processor combines and recompresses the decompressed data to create recompressed data.

Abstract: When the capacity of a buffer region runs short, storing a first generation data set, a second generation data set, and a third generation data set, a control unit selects the first generation data set as a designated data set. The control unit creates, and stores in a storage unit, update record information based on the first generation data set. The control unit identifies the position where the first generation data set is to be stored in the copy source volume according to correspondence relation information, and updates the copy source volume with the first generation data set. The control unit deletes the first generation data set from the buffer region, and also deletes the correspondence relation information corresponding to the first generation data set from the storage unit.

Abstract: When the capacity of a buffer region runs short, storing a first generation data set, a second generation data set, and a third generation data set, a control unit selects the first generation data set as a designated data set. The control unit creates, and stores in a storage unit, update record information based on the first generation data set. The control unit identifies the position where the first generation data set is to be stored in the copy source volume according to correspondence relation information, and updates the copy source volume with the first generation data set. The control unit deletes the first generation data set from the buffer region, and also deletes the correspondence relation information corresponding to the first generation data set from the storage unit.

Abstract: An electronic device is provided that has excellent portability because it can be folded to a compact size at coupling means. In addition, a first display portion of a first display unit and a second display portion of a second display unit can form a single, large-screen display portion when the first display unit is rotated 90° clockwise and the second display unit is rotated 90° counterclockwise.

Abstract: A positive electrode active material and a nonaqueous electrolyte secondary battery containing a lithium-containing composite metal oxide having a composition represented by: Li1+yM1?y?zM1zPO4 where M is at least one of Co and Ni, and M1 is at least one of Mg, Zr and Al, the molar ration y is larger than 0 and smaller than 0.5, and the molar ration z is larger than 0 and not larger than 0.5 is provided.

Abstract: A battery-powered vacuum cleaner is provided with a battery pack that generates heat and is capable of efficiently cooling the battery pack. The battery-powered vacuum cleaner comprises a battery pack (3) including a plurality of secondary batteries, a battery pack container (2) containing the battery pack, a motor (7) driven for operation by power supplied by the battery pack, a fan (5) driven by the motor to suck air, a dust cup (9) for separating dust from air sucked therein by the fan and storing the dust separated from the sucked air, a housing (1) containing the battery pack container, the motor, the fan and the dust cup, and provided with a first suction opening (30) through which external air is sucked, a first airflow duct (32) for guiding the air sucked in by the fun through the dust cup to the motor, and a second airflow duct (36), for guiding air for cooling the battery pack through the battery pack, joined to the first airflow duct at a junction (34) on the upstream side of the fan.

Abstract: An electronic device is provided that has excellent portability because it can be folded to a compact size at coupling means. In addition, a first display portion of a first display unit and a second display portion of a second display unit can form a single, large-screen display portion when the first display unit is rotated 90° clockwise and the second display unit is rotated 90° counterclockwise.

Abstract: A rechargeable battery with a nonaqueous electrolyte using a constituent material, which has high energy density and a high level of safety. The constituent material includes a positive electrode having a lithium compound-containing active material and a current collector, and a negative electrode facing the positive electrode. The negative electrode an active material and a current collector. At least one of the current collectors being formed of an assembly of rectangular sheet pieces. The constituent material satisfies formula S/???×d, where d represents distance between the current collectors which face each other; S represents the largest facing area in one rectangular sheet piece in the positive electrode current collector and the negative electrode current collector; ? represents aspect ratio of one rectangular sheet piece in the positive electrode or negative electrode current collector; and ? is a coeffieient which is a number of 900 to 720.

Abstract: A battery-powered vacuum cleaner is provided with a battery pack that generates heat and is capable of efficiently cooling the battery pack. The battery pack of the battery-powered vacuum cleaner is cooled by a vacuum cleaner cooling method.

Abstract: A battery-powered vacuum cleaner is provided with a battery pack that generates heat and is capable of efficiently cooling the battery pack. The battery pack of the battery-powered vacuum cleaner is cooled by a vacuum cleaner cooling method.

Abstract: A battery pack includes an outer case, and a plurality of cylindrical lithium ion secondary batteries accommodated in the outer case in vertical N rows and lateral M rows (N rows?M rows), with a gap between the secondary batteries, wherein the outer case has a draft port opened in a first wall facing an outer circumferential surface of the secondary batteries in the first vertical row, and an exhaust port opened in a second wall positioned at the opposite side of the first wall, in each secondary battery in the first vertical row and the second vertical row, a part of the outer circumferential surface, which is at a shorter distance from the first wall than any other parts, faces the draft port of the outer case.

Abstract: A positive electrode active material and a nonaqueous electrolyte secondary battery containing a lithium-containing composite metal oxide having a composition represented by: Li1+yM1?y?zM1zPO4 where M is at least one of Co and Ni, and M1 is at least one of Mg, Zr and Al, the molar ration y is larger than 0 and smaller than 0.5, and the molar ration z is larger than 0 and not larger than 0.5 is provided.

Abstract: A positive electrode active material and a nonaqueous electrolyte secondary battery containing a lithium-containing composite metal oxide having a composition represented by: Li1+yM1?y?zM1zPO4 where M is at least one of Co and Ni, and M1 is at least one of Mg, Zr and Al, the molar ratio y is larger than 0 and smaller than 0.5, and the molar ratio z is larger than 0 and not larger than 0.5 is provided.

Abstract: The invention provides a battery pack comprising an outer case, and a plurality of cylindrical lithium ion secondary batteries accommodated in the outer case in vertical N rows and lateral M rows (N rows?M rows), with a gap between the secondary batteries, wherein the outer case has a draft port opened in a first wall facing an outer circumferential surface of the secondary batteries in the first vertical row, and an exhaust port opened in a second wall positioned at the opposite side of the first wall, in each secondary battery in the first vertical row and the second vertical row, a part of the outer circumferential surface, which is at a shorter distance from the first wall than any other parts, faces the draft port of the outer case.

Abstract: The present invention provides a positive electrode active material containing a composite oxide having a composition represented by a structural formula (1) given below: Lix(Ni1-yMe1y)(O2-zXz)+A??(1)

Abstract: An advertising information memory area for storing advertising information for displaying prescribed advertisement, and a label information memory area for storing label information for presenting a space for displaying advertisement, are provided. A personal computer refers the label information memory area and the advertising information memory area, synthesizes advertisement images and character strings based on the advertising information, and displays the same in the label image based on the label information. An advertising environment is provided which is highly effective in a personal computer environment.

Abstract: A battery-powered vacuum cleaner is provided with a battery pack that generates heat and is capable of efficiently cooling the battery pack. The battery pack of the battery-powered vacuum cleaner is cooled by a vacuum cleaner cooling method.

Abstract: The invention provides a battery pack comprising an outer case, and a plurality of cylindrical lithium ion secondary batteries accommodated in the outer case in vertical N rows and lateral M rows (N rows≦M rows), with a gap between the secondary batteries, wherein the outer case has a draft port opened in a first wall facing an outer circumferential surface of the secondary batteries in the first vertical row, and an exhaust port opened in a second wall positioned at the opposite side of the first wall, in each secondary battery in the first vertical row and the second vertical row, a part of the outer circumferential surface, which is at a shorter distance from the first wall than any other parts, faces the draft port of the outer case.

Abstract: The present invention provides a positive electrode active material containing a lithium-containing composite metal oxide having a composition represented by formula (1) given below: