摘要:
To stably perform optical recording and optical reproducing under optimum conditions, in an optical recording medium having a writable recording layer on a substrate and having a maker recording area in which recording is performed by a maker on the recording layer, individual drive control information of the optical recording medium is recorded in the maker recording area, and, in optical recording and optical reproducing, optical recording and optical reproducing are performed by the drive control information under optimum conditions.
摘要:
By a process for producing a porous carbon material from a plant-derived material as a raw material, said process including carbonizing the plant-derived material at 800° C. to 1,400° C. and then applying a treatment with an acid or alkali, a porous carbon material having a value of specific surface area of at least 10 m2/g as measured by the nitrogen BET method, a silicon content of at most 1 wt % and a pore volume of at least 0.1 cm3/g is obtainable from a plant-derived material, which has a silicon content of at least 10 wt %, as a raw material. Also provided is a process for producing a porous carbon material equipped with excellent functionality so that the porous carbon material can be used, for example, as an anode material for batteries, an adsorbent, masks, adsorbing sheets, or carriers.
摘要:
A fuel cell is provided which can control an optimum fuel concentration according to an output without a sensor for measuring the fuel concentration. The fuel cell uses a liquid organic compound for fuel and includes a membrane-electrode assembly, a passage for allowing fuel or oxidant to flow, a fuel supply unit for supplying the fuel to the fuel cell and intermittently or periodically changing a rate of fuel supply, and a computation processor for measuring a signal of a voltage or an output of the fuel cell, computing the rate of the fuel supply and the signal, and correcting the rate of the fuel supply. In the fuel cell, the optimum fuel concentration can be easily controlled according to the output by periodically varying the fuel concentration from a reference fuel concentration, measuring a voltage or an output and a variation range of the voltage or the output, and then determining whether the reference fuel concentration is appropriate or not.
摘要:
An electrostatic capacitance element includes: a dielectric layer; and a pair of electrodes or a plurality of pairs of electrodes having one electrode formed on one surface of the dielectric layer and the other electrode formed on the other surface of the dielectric layer by interposing the dielectric layer therebetween. The one electrode and the other electrode are arranged such that longitudinal directions of the electrodes intersect with each other. In addition, the one electrode and/or the other electrode have at least two electrode widths. In a case where the one electrode is formed to be relatively shifted with respect to the other electrode, an area of the electrodes overlapping in a thickness direction of the dielectric layer by interposing the dielectric layer can be changed in a continuous manner or a stepwise manner.
摘要:
A variable capacitance device including: a device body having a plurality of dielectric layers formed by a dielectric material changing in capacitance according to a control signal applied externally and laminated in a predetermined direction and an internal electrode section including at least one internal electrode formed in each of both surfaces of each dielectric layer, three or more capacitors being formed by the plurality of dielectric layers and the internal electrode section, and the three or more capacitors being connected in series with each other; and at least three control terminals supplied with the control signal, and respectively arranged for at least three internal electrodes forming at least two capacitors of the three or more capacitors.
摘要:
The present invention provides a variable capacitor and a control method thereof capable of responding to applications of electronic apparatus including various electronic devices and communication mobile devices. The electronic device and the communication mobile device including the variable capacitor are provided.A variable capacitor according to the invention includes a pair of electrodes formed so as to sandwich a ferroelectric material layer, in which polarization processing higher than a coercive field in hysteresis characteristics of polarization has been performed to the ferroelectric material layer, and the capacitance can be varied in accordance with a control voltage applied to the electrodes.
摘要:
An optical recording medium according to the present invention includes a data recording area forming a double spiral structured track having spiral recording tracks each formed of a groove and a land adjacent to the groove, and a reproduction only area forming a single spiral structured track consisting of a pit row.
摘要:
The invention relates to an optical disc apparatus more particularly relates to an optical disc apparatus which is suitably applied to an magneto-optic disc apparatus to reduce leakage of wobble signal to reproduction signal. To achieve the object, the signal level of the first and second beam quantity detection signals SI and SJ which generate the reproduction signal RF by use of the differential output is corrected based on the signal level SL of the wobble signal component detected from the reproduction signal RF and the phase detection result S.o slashed., or the wobble signal component is extracted respectively from the first and second beam quantity detection signals and subtraction is performed.
摘要:
A signal measurement apparatus is provided which does not require a special pattern to measure and evaluate reproduced data of a digital signal. RF data, which is binary-coded data obtained by reproducing digital recorded signal, and latch data obtained by latching the RF data in response to a reproduction clock signal reproduced by using the RF data are supplied through a signal input terminal thereof and respectively supplied to a first-pattern-length detection section and a second-pattern-length detection section so that the pattern lengths of predetermined patterns are measured. Then, a 2D display section plots the first pattern lengths on the X axis and the second pattern lengths on the Y axis to 2D-display the first and second pattern lengths.
摘要:
A fuel assembly, where crystallographic orientations of a channel box are brought into a random distribution; and cladding tubes, spacers and a channel box are made from highly corrosion-resistant, Fe--Ni, zirconium-based alloy, hardened in the (.alpha.+.beta.) phase or .beta.-phase temperature region, has an average discharge burnup level of 50 to 550 GWd/t.