摘要:
A disk device and a disk medium are disclosed in which a plurality of servo cylinders on the surface of at least one disk are divided into several areas, and a different servo signal frequency is set and recorded for each of the areas. The servo cylinders are divided into predetermined areas, and a different servo signal frequency for each of the areas is set so that the recording density of the servo signal recorded in the disk can be set so as to allow the servo signal demodulation characteristic to be included in a relatively superior range. In the disk device, the boundary between the area of a first servo signal frequency and the area of a second servo signal frequency adjoining the first servo signal frequency area is preferably formed with an area in which a servo signal pattern written with the first servo signal frequency and a servo signal pattern written with the second servo signal frequency are arranged on the same servo cylinders.
摘要:
The electrode material for a lithium secondary battery according to the present invention includes particles of a solid state alloy having silicon as a main component, wherein the particles of the solid state alloy have a microcrystal or amorphous material including an element other than silicon, dispersed in microcrystalline silicon or amorphized silicon. The solid state alloy preferably contains a pure metal or a solid solution. The composition of the alloy preferably has an element composition in which the alloy is completely mixed in a melted liquid state, whereby the alloy has a single phase in a melted liquid state without presence of two or more phases. The element composition can be determined by the kind of elements constituting the alloy and an atomic ratio of the elements.
摘要:
A storage device employing the ramp load/unload technique for an actuator is disclosed that has high shock-resistance, high vibration-resistance, and is capable of rapid and stable ramp load/unload operations. A position detection unit integrates the speed of the actuator, obtained by detecting a back electromotive force generated in a VCM, to calculate the present position of the magnetic head. A position determination unit compares the present position of the magnetic head with a series of position thresholds, and based on the comparison results, a bandwidth switching unit switches the bandwidth of a PI controller for feedback control of the actuator, from a narrow bandwidth to a wide bandwidth and vice versa. At positions where the speed starts to change or the speed change becomes small, the position determination is performed and the bandwidth is appropriately switched.
摘要:
A method for producing nano-carbon materials, having a step wherein a starting material comprising one or more kinds of compounds selected from the group consisting saturated hydrocarbons, unsaturated hydrocarbons, saturated cyclic hydrocarbons, and alcohols whose atomic ratio of the component carbon to the component oxygen is more than 2.0 and a catalyst are together treated at a temperature in a range of from 100 to 800° C. while being compressed at a pressure in a range of from 0.2 to 60 MPa, where said starting material is converted into a supercritical fluid or a subcritical fluid while said supercritical fluid or said subcritical fluid being contacted with said catalyst, or a step wherein said starting material, said catalyst and a supplementary material capable of functioning as a reaction promotion medium are together treated at a temperature in a range of from 100 to 800° C. while being compressed at a pressure in a range of from 0.2 to 60 MPa, where at least said supplementary material is converted into a supercritical fluid or a subcritical fluid and said starting material is contacted with said supercritical fluid or said subcritical fluid formed from said supplementary material while being contacted with said catalyst.
摘要:
A laminated ceramic electronic component includes an embedded portion formed in the periphery of an external terminal electrode so as to extend and be embedded in a component main member defined by ceramic layers, whereby affects of a small edge angle are eliminated.
摘要:
The present invention provides: an electrode material for a lithium secondary battery containing lithium boron mixed oxide having a monoclinic LiBO2 structure and represented by a chemical formula LiB1-xDxO2-yEy (wherein, D represents a substitution element of boron B, E represents a substitution element of oxygen O, 0
摘要:
A method for producing an aluminum nitride/aluminum base composite material comprising the steps of; (A) charging aluminum nitride powder into a container provided in a molten metal pressure apparatus, (B) applying pressure to the aluminum nitride powder in the container, (C) pouring a molten aluminum base material into the container, and, (D) applying pressure to the molten aluminum base material in the container to fill the aluminum base material in space between the aluminum nitride powder particles.
摘要:
A display device comprises a substrate; a gate line formed over the substrate; a first insulating film formed over the substrate and the gate line; a semiconductor film formed over the first insulating film; a drain electrode formed over the semiconductor film; a source electrode formed over the semiconductor film; a data line connected to the drain electrode and formed over the first insulating film; a second insulating film formed over the source electrode and the data line; a pixel electrode electrically connected to the source electrode and formed over the second insulating film; and a transparent conductive film connected to the data line through a contact hole formed in the second insulating film, the transparent conductive film being adapted to be electrically connected to an external drive circuit, wherein the transparent conductive film has a portion a lower surface of which is nearer to a surface of the substrate than is a lower surface of the transparent conductive film in the contact hole.
摘要:
An active matrix type display device having first and second substrates, and a plurality of drain lines and gate lines formed on the first substrate and crossing each other in a matrix form. A plurality of pixels are formed by adjoining the drain lines and the gate lines. A gate terminal is connected to the gate line formed on the first substrate, and a drain terminal is connected to the drain line formed on the first substrate. At least a pixel electrode is formed on the first substrate in each pixel, at least a counter electrode is formed on the first substrate in each pixel, and the gate terminal and the drain terminal are formed by the same layer of the counter electrode.
摘要:
A disk apparatus having a ramp loading mechanism. A disk medium on which second servo patterns have been written in a landing area on the medium at a finer interval than that of first servo patterns written in a data area is used. When a head is moved from a ramp to the landing area on the medium, a lead-in processing unit performs a servo lead-in on the basis of the second servo patterns written in the landing area at a fine interval.