Canon Kabushiki Kaisha

Fujitsu Corporation

Masaru Shibata

Hiroshi Yazawa

Toshihide Yanagawa

Himiko Kaneko

Akihiro Yamanaka

Asao Saito

Yusaku Azuma

Katsumi Ishihara

Fumio Ichikawa

Eiji Hamamoto

Yoshio Ookubo

Akira Nakada

Masato Yamagami

In a first management unit for a redundant array of independent disks (RAID management unit), a shared-class setting unit receives a shared-class setting command, for example, from a host computer. If the shared-class setting command includes information about the first RAID management unit and a second RAID management unit, a shared management-information creating unit creates shared management information, writes the created shared management information onto a first disk, notifies the second RAID management unit corresponding to a second disk about the shared management information, and gives an instruction to write the shared management information onto the second disk. The second RAID management unit then writes the notified shared management information onto the second disk.

RAID management apparatus, RAID management method, and computer product

A method of transferring a virtual volume established on a real volume includes acquiring transfer source virtual volume information from a transfer source, acquiring transfer destination real volume information from a transfer destination, generating transfer destination virtual volume information from the transfer source virtual volume information by using the transfer destination real volume information, and establishing a virtual volume at the transfer destination based on the transfer destination virtual volume information.

Virtual volume transfer apparatus, virtual volume transfer method, and computer product

A table having a plurality of holding portions for holding recording heads to be tested is arranged to be pivotal between a printing position and a changing position, so that the recording head located at the changing position can be changed during estimation of the recording head located at the printing position. An estimation pattern in which dots are arranged so as not to contact each other is printed on a recording medium. The printed estimation pattern is read by an image pick-up device, and character amounts in units of dots are extracted from image data obtained by the image pick-up device. Pattern estimated values are calculated according to the dot character amounts and are used to judge whether the recording head is normal. Another printed pattern is read by the image pick-up device, and an edge image is extracted from density image data obtained by the image pick-up device. After enlargement/reduction processing is performed for the edge image, an edge image is extracted again. Shape character values in units of areas separated by edge lines of the edge image are obtained, and the pattern and any stain are discriminated based on the shape character values, thereby detecting a stain state. A one-dimensional average density in the line direction of the pattern is obtained from the density image data, and a line width is obtained based on the average density. A stain is detected on the basis of the line width.

Testing method and apparatus for judging a printing device on the basis

A work pick-up apparatus which picks up an object work out of a plurality of works held on a container case through visual recognition of the position of the object work by a visual sensor. The apparatus comprises: a memory circuit for storing shape characteristic information concerning the shape characteristic of the object work; an input circuit for externally inputting approximate position information representing an approximate position of the object work on the case, the approximate position information being expressed in terms of a coordinate system associated with the work pick-up apparatus; and a measuring circuit for measuring the pick-up position of the work in terms of the coordinate system associated with the pick-up apparatus, by processing the image information concerning the work obtained through the visual sensor in accordance with the approximate position information and the shape characteristic information.

Work pick-up apparatus

Growing community of inventors

Kawasaki, Japan

Masaru Shibata