Abstract:
The present invention relates to a power generation controller of a vehicle power generator, which includes: voltage detection means for sampling a voltage of a battery based on a reference clock signal; duty range setting means for setting a range for an ON/OFF ratio of a field switching element from the rotation speed of the power generator; control duty computation means for computing the ON/OFF ratio of the field switching element based on thus set duty range from a deviation between a power generation target voltage and voltage information as a result of sampling; and field PWM drive means for controlling the ON/OFF switching operation of the field switching element with an interval based on the reference clock signal from the computed ON/OFF ratio.
Abstract:
In a method for identifying blistered film in layered films, a focused ion beam irradiates the approximate center of the blister and a portion which has no blister, and individual sets of the measurement data relating to the respective numbers of secondary electrons generated by the irradiation are compared to determine which film of layered films has blistered. Since the focused ion beam is employed, the present method is applicable to the detection of a small blister in layered films. Furthermore, since an enormous number of cutting operations as might have been required in the prior art are eliminated, the present method can be carried out, stably, positively and economically.
Abstract:
The present invention relates to a power generation controller of a vehicle power generator, which includes: voltage detection means for sampling a voltage of a battery based on a reference clock signal; duty range setting means for setting a range for an ON/OFF ratio of a field switching element from the rotation speed of the power generator; control duty computation means for computing the ON/OFF ratio of the field switching element based on thus set duty range from a deviation between a power generation target voltage and voltage information as a result of sampling; and field PWM drive means for controlling the ON/OFF switching operation of the field switching element with an interval based on the reference clock signal from the computed ON/OFF ratio.
Abstract:
Disclosed are an apparatus for wiring a semiconductor device and a wiring method therefor which allow a manufacturing step to be simplified without deteriorating an insulation characteristic of an aerial wiring. The semiconductor device wiring apparatus includes a first beam column 1a disposed above a substrate 50 and a second beam column 1b disposed horizontally thereto. Therefore, a wiring portion of the aerial wiring to be formed upwardly is formed by using the first beam column 1a and a wiring portion to be formed horizontally to wiring layer of the substrate 50 is formed by using the second beam column, which results in that no insulating film for the aerial wiring is required to simplify manufacturing steps.
Abstract:
A process for forming electrodes for semiconductor devices having a semiconductor substrate and an electrically conductive portion covered and protected by an electrically insulating coating. The process includes the steps of forming an electrically conductive film on the electrically insulating coating, forming an electrode to be connected to an external circuit on the electrically conductive film at a position overlying the electrically conductive portion by exposing portions of the electrically insulating coating and the first electrically conductive film to a converged ion beam, electrically connecting the electrode to the exposed portions of the electrically conductive film, and removing the portions of the electrically conductive film not covered by the electrode. As a result, the likelihood of breakdown of the internal circuit of the semiconductor device connected to the electrically conductive portion while the electrode is being formed is greatly reduced.
Abstract:
A display control circuit capable of performing arbitration with the use of a simple configuration. The display control circuit exchanges, with a plurality of masters, attribute information defining conditions for displaying video on a display, and includes a memory for storing the attribute information, a plurality of channels associated with the respective masters for accepting, from the masters, access requests to access the memory, and an arbitration controller configured by hardware. The arbitration controller arbitrates the access requests accepted via the respective channels and permits a selected one of the access requests to access the memory.
Abstract:
A data transfer device for preventing a PCI-X bus from hanging up, which can be caused when a sender of data aborts. An abort signal-receiving section receives an abort signal delivered by the sender of data when the sender aborts. When the abort signal-receiving section receives the abort signal, a dummy data-generating section generates dummy data. When the abort signal-receiving section receives the abort signal, an erroneous parity data-generating section generates erroneous parity data for indicating that the dummy data generated by the dummy data-generating section is a dummy. A data-transmitting section transmits the dummy data generated by the dummy data-generating section and the erroneous parity data generated by the erroneous parity data-generating section, to a recipient of the data via the PCI-X bus.
Abstract:
Accurate etching control using focused ion beams can be achieved if the etching is performed in accordance with a detection signal obtained by detecting an electric current passing from a semiconductor device to ground or secondary electrons generated when the charged beams are spirally applied to a predetermined area during the charged-beam scanning operation. Therefore, the end point of the process can be accurately detected and uniform processing results can be obtained. As a result, precise etching control can be performed and a reliable semiconductor device can be manufactured.
Abstract:
In a manufacturing method of a junction gate field effect transistor, impurities of a first conductivity type are first implanted at a predetermined concentration into a monocrystal silicon layer separately formed on a region to be used as an active region in an insulating layer, and then surfaces of the monocrystal silicon layer and an insulating substrate are covered with a silicon oxide film. Then, impurities of a second conductivity type are implanted at a predetermined concentration into a portion to be used as a gate electrode in a monocrystal silicon layer by a focused ion beam method, and metal ions are implanted at a predetermined concentration into a portion to be used as a gate electrode of the silicon oxide film covering the monocrystal silicon layer by the focused ion beam method. Then, a polycrystal silicon gate electrode doped with impurities and having an area larger than the portion to be used as the gate electrode of the silicon oxide film is formed to cover a surface of the portion to be used as the gate electrode. Thereafter, impurities of the second conductivity type are implanted at a predetermined concentration into the monocrystal silicon layer, using this polycrystal silicon gate electrode as a mask, to form a source region and a drain region.
Abstract:
A photomask material according to the present invention comprises a transparent substrate and a silicide film of a transition metal formed on the transparent substrate.