Abstract: Provided is an information processing device which is capable of suppressing a deterioration in accuracy of detecting an anomaly and accuracy of analyzing the anomaly, while suppressing an increase in an amount of data to be stored. The information processing system includes anomaly detection unit that collects event data indicating a predetermined event detected in a process of a device to be monitored, determines whether a predetermined index value related to the event exceeds a preset first threshold, and instructs enhanced monitoring of the device to be monitored and the process related to the event when the index value exceeds the first threshold, and collection instruction unit that determines an additional event being an event to be additionally monitored when the enhanced monitoring is instructed, and instructs the device to be monitored, which is subjected to the enhanced monitoring, to monitor the determined additional event.

Abstract: The present invention provides a production process of a hexagonal honeycomb structure having low deformation of hexagonal cells. This process comprises an extrusion step for obtaining moldings (7) in which partitions (71) are provided in the form of a hexagonal matrix by extrusion molding of a mixed raw material using a horizontal extruder having an extrusion die provided with slits in the form of a hexagonal matrix and in which the direction of extruding is substantially the horizontal direction, a drying step for drying moldings (7), and a baking step for baking moldings (7). The extrusion step is performed such that c axis (700) parallel to two parallel sides (702) and (705) of the six sides (701) through (706) of each hexagon formed by partitions (71) of extruded moldings (7) is substantially vertical relative to the horizontal plane.

Abstract: The present invention provides a production process of a hexagonal honeycomb structure having low deformation of hexagonal cells. This process comprises an extrusion step for obtaining moldings (7) in which partitions (71) are provided in the form of a hexagonal matrix by extrusion molding of a mixed raw material using a horizontal extruder having an extrusion die provided with slits in the form of a hexagonal matrix and in which the direction of extruding is substantially the horizontal direction, a drying step for drying moldings (7), and a baking step for baking moldings (7). The extrusion step is performed such that c axis (700) parallel to two parallel sides (702) and (705) of the six sides (701) through (706) of each hexagon formed by partitions (71) of extruded moldings (7) is substantially vertical relative to the horizontal plane.

Abstract: A transducer position control system capable of shockproofing a hard disk data storage apparatus. Included is an off-track detector circuit relying on servo bursts prerecorded on the disk for detecting if the transducer is positioned within predetermined limits on any desired one of the concentric data tracks on the disk. If not, the off-track detector circuit signals a write circuit to inhibit writing. A programmed microcomputer may be employed to retry the writing of the same data on the disk sector where the transducer has gone off the track.

Abstract: A disklike record medium such as a magnetic data storage disk, and a closed-loop servo control system for positioning a transducer such as a magnetic read/write head on any of a multiplicity of concentric tracks on the record medium. The tracks on the record medium are divided into a plurality of groups, and each track of each group has a different code character prerecorded thereon as in the form of discretely magnetized regions. All the groups of tracks have the same set of code characters assigned thereto for the simplicity of the code characters. Read by the transducer, the code characters enable the control system to individually identify all the tracks of all the groups. In response to an externally supplied track command indicative of a destination track on which the transducer is to be positioned, and to internally supplied track code data, the control system causes translation of the transducer from a departure track to the destination track during track seek operations.

Abstract: In a data storage and retrieval system employing a magnetic disk as the storage medium, a monophase encoder is coupled, typically, to an electric seek motor for optoelectronically producing an output representative of the position of a data transducer with respect to a multiplicity of concentric data tracks on the disk. Electrically connected to the monophase encoder is a triple detector circuit for deriving from the encoder output a transducer position signal representative of the transducer position on the disk, an actual transducer speed signal representative of the transducer speed relative to the disk, and a track boundary signal representative of boundaries between the data tracks on the disk.

Abstract: A digital tape cassette apparatus having a speed sensing roller in frictional contact with the magnetic tape within a cassette housing at a point intermediate the magnetic head and that one of the cassette hubs operating as the takeup hub during forward tape transportation. Utilizing a tape speed signal generated by a speed sensor driven by the speed sensing roller, a closed loop servomechanism controls a pair of drive motors coupled directly to the respective cassette hubs to afford constant tape speed. The servomechanism is associated with a tape tension control circuit whereby a supply side one of the drive motors during tape travel in either direction is energized to an extent increasing with the increase in the diameter of the tape reel on the takeup side hub, thereby affording constant tape tension.