摘要:
An optical disk apparatus according to the present invention includes: a controller 111, which receives an instruction that a layer-to-layer jump be performed from a current layer to a target layer; a layer-to-layer jump control section 146, which adjusts a spherical aberration correction value to the target layer and then gets the layer-to-layer jump attempted; a decision section 146 for determining whether the layer-to-layer jump has been carried out successfully; and a layer determining section 146 for determining, if the focus position has been set on a non-target storage layer as a result of the layer-to-layer jump, where the non-target storage layer is located in the optical disk. The layer-to-layer jump control section 146 shifts the focus position of the light beam from that non-target storage layer to the target layer by reference to information indicating which of the multiple storage layers the non-target storage layer is.
摘要:
A storage medium with electronic paper is provided with a disk drive that can refresh the display on the electronic paper using a simple arrangement.A disk drive includes a motor that generates rotational force and a drive shaft support for clamping a disk thereon by contacting with the disk and for turning the disk thereon by the rotational force. The drive shaft support includes at least one output terminal for outputting an electrical signal. If the disk includes electronic paper on which the display is refreshable in response to the electrical signal, the at least one output terminal of the disk drive is arranged so as to contact with at least one input terminal that is arranged on the disk to supply the electrical signal to the electronic paper.
摘要:
A communication unit connects an e-mail data transfer protocol to transfer e-mail data items with an external device. An e-mail data storage unit stores the e-mail data items transferred from the external device. The control unit does not cause the external device to transfer the e-mail data items when the e-mail data transfer protocol is connected and when a total number of subjects of the e-mail data items and a data content of a latest e-mail data item stored in the external device respectively coincide with a total number of subjects of the e-mail data items and a data content of a latest e-mail data item stored in the e-mail data storage unit, at the time point when the e-mail data transfer protocol is connected between the communication unit and the external device.
摘要:
Radome equipment that includes an antenna device, and a radome that protects the antenna device by housing the antenna device therein and that transmits electric power necessary for communication, in which: a matching layer made of a single-layer dielectric is attached to an inner surface of the radome; and the matching layer has a thickness that is set to a value that minimizes reflection based on an impedance estimated from an interface between the matching layer and the radome before the matching layer of the radome is attached, a characteristic impedance of a medium of the matching layer, a wavelength in the matching layer, and a characteristic impedance of a medium of a space in which the radome is disposed.
摘要:
An optical disc apparatus according to the present invention includes a disc type recognizing section for determining whether the optical disc loaded is a first type, of which the number of information storage layers is less than a setting T (where T is an integer that is greater than two), or a second type, of which the number of information storage layers is equal to or greater than the setting T. Depending on whether the optical disc loaded has turned out to be the first type or the second type, the apparatus determines the read/write preprocessing (such as whether a fingerprint detection process needs to be performed or not).
摘要:
A beam forming apparatus of a satellite is configured to: define a perimeter of a coverage area, and define a coordinate grid of a polar coordinate system so as to divide the coverage area into a plurality of small areas; calculate coordinates of borders between basic cells in a Cartesian coordinate system, the basic cells being shaped into regular hexagons arranged to be in contact with one another along their sides and at their vertices or into circles circumscribing the regular hexagons; define a plurality of new cells by converting, through coordinate transformation, the coordinates of the borders between the basic cells in the Cartesian coordinate system into coordinates of borders in the polar coordinate system; and set amplitudes and phases to the plurality of antenna devices that are suitable to form a plurality of beams in respective directions of the plurality of new cells.
摘要:
A layer-to-layer jumping method according to the present invention includes, after a layer-to-layer jump has been started in a multilayer optical disc, the step ST7 of detecting an S-curve signal from an information layer, which is located shallower than the target information layer of the layer-to-layer jump, with a spherical aberration correction made adaptively to that shallower information layer, and the step ST8 of generating a deceleration signal based on the S-curve signal detected to get the layer-to-layer jump done.
摘要:
Basic magnesium sulfate granules having a bulk density of 0.5-1.0 g/cm3, a mean crushing strength of 700-900 g and a water content of 3 wt. % or less which comprises agglomerated particles of fibrous basic magnesium sulfate particles and fibrous xonotolite particles in a weight ratio of 95:5 to 70:30, wherein the fibrous basic magnesium sulfate particles have a mean length of 5-200 μm and a mean thickness of 0.2-1.0 μm and the fibrous xonotolite particles have a mean length less than that of the fibrous magnesium sulfate particles. The basic magnesium sulfate granules can be produced by drying a water-containing granular composition comprising agglomerated particles of fibrous basic magnesium sulfate particles and fibrous xonotolite particles which have a water content of 40 to 60 wt. % for 36 hours or more, thereby obtaining a granular composition having a water content of 3 wt. % or less.
摘要:
A foldable portable terminal of the present invention includes a body cabinet 1 provided with a microphone 14 and a cover cabinet 2 provided with first and second speakers 41, 42, openably/closably coupled to each other. Any one or both of the cabinets are provided with closing means for closing a sound emitting hole 22a of the first speaker in a closed state of the both cabinets. Alternatively, a partition wall for partitioning the first speaker and the second speaker is formed inside the cover cabinet. Alternatively, the body cabinet has an inner surface provided with a transmission unit 6 incorporating a microphone 63 and being rotatable between a first rotational posture where the unit faces the inner surface side of the body cabinet and a second rotational posture where the unit faces a direction deviating from the cover cabinet in a closed position.
摘要:
It is an object to provide a small ultrasonic actuator whose voltage control is easy. The ultrasonic actuator acts on a rotatable rotor to rotate the rotor, the ultrasonic actuator includes: a plate vibrator having one end which contacts the rotor, a corner portion bent at a midpoint in the vibrator, and the other end which is fixed; and a piezoelectric device which contacts a part of the vibrator between the one end and the corner portion, and transmits a vibration to the vibrator by vibrating in response to application of an alternating voltage between one of electrodes provided respectively on both surfaces or the plate vibrator serving as the one of the electrodes and the other of the electrodes.