摘要:
An antenna-electrode structure includes a feeding radiant-electrode and a grounded portion arranged such that an open-end of the feeding radiant-electrode defines a capacitance to the grounded portion therebetween, and a non-feeding radiant-electrode arranged to electromagnetically couple the feeding radiant-electrode. The non-feeding radiant electrode is arranged such that an open-end thereof defines a capacitance to the grounded portion therebetween to produce a dual-frequency resonance state together with the feeding radiant-electrode. In response to a signal supplied from a signal-supply source, the feeding radiant-electrode performs an antenna action and the non-feeding radiant-electrode in turn performs an antenna action by signal transmission from the feeding radiant-electrode, such that by being excited from these actions, the grounded portion also performs an antenna action. Because of the antenna action of the grounded portion, the sizes of the feeding radiant-electrode and the non-feeding radiant electrode are reduced.
摘要:
A thin-film single magnetic pole head which assures highly efficient magnetic energization of a main magnetic pole and which exhibits optimum recording characteristics even in case of recording on a double-layer perpendicular magnetic recording medium with a high frequency. The thin-film single magnetic pole head includes a main magnetic pole consisting of a soft magnetic thin film and a return yoke. A thin-film coil for energizing the main magnetic pole is constituted by a plurality of conductor layers extending substantially parallel to one another and substantially at right angles to the main magnetic pole. The conductor layers are layered together in the up-and-down direction on both sides of the main magnetic pole. A thin-film coil for magnetically energizing the main magnetic pole is constituted by selectively interconnecting the conductors. In this manner, the thin-film coil can be arranged at the foremost part of the main magnetic pole (towards the perpendicular magnetic recording medium facing surface) to render it possible to energize the foremost part of the main magnetic pole with high efficiency.
摘要:
Provided is a method for producing a high-purity tungsten powder having a phosphorus content of less than 1 wtppm; wherein an ammonium tungstate solution containing 1 wtppm or more of phosphorus as an impurity in terms of the inclusion in tungsten is used as a starting material, this solution is neutralized with hydrochloric acid at a temperature of 50° C. or less to adjust the pH at 4 or more and less than 7 so as to precipitate ammonium paratungstate undecahydrate crystals, the resulting solution is heated to 70 to 90° C. and filtered in a high-temperature state so as to obtain ammonium paratungstate pentahydrate crystals, the obtained crystals are calcined so as to form a tungsten oxide, and the tungsten oxide is subject to hydrogen reduction so as to obtain a high-purity tungsten powder. Additionally provided is a method for producing a high-purity tungsten powder having a phosphorus content of 0.4 wtppm or less; wherein the ammonium tungstate solution is neutralized with hydrochloric acid to adjust the pH at 4 or more and 6 or less, and this solution is subject to the same procedure as described above so as to obtain a high-purity tungsten powder. Consequently, the phosphorus content can be efficiently reduced.
摘要:
Provided are N-digit addition and subtraction units and N-digit addition and subtraction modules in which borrowing and carrying are not propagated in modules having basic digits. In the units and modules, an output pattern of results of addition and subtraction is predicted based on a relation between an augend and an addend and a relation between a minuend and a subtrahend, respectively, thereby preventing borrowing and carrying from being propagated in modules having basic digits.
摘要:
The present invention relates to provide a projection exposure device having a small volume, thereby not occupying a large installation space. The projection exposure device is configured to transfer patterns formed on a mask to a surface of film-shaped tape on an upright exposure stage by projecting the patterns onto the surface using light. This projection exposure device includes a transfer mechanism for feeding the tape to the exposure stage vertically, and a projection optical mechanism for irradiating the surface of the tape with the light. The projection optical mechanism is composed of Dyson optics located opposite the transfer mechanism across the exposure stage, and has an optical axis that is substantially perpendicular to the exposure stage.
摘要:
A data processing apparatus constituting a low-cost audio/video data transmission and reception system is disclosed. A reception buffer monitoring circuit 21 monitors the size of receiver data being accumulated in a reception buffer 6. When the size of accumulated data is found to become higher than a high threshold, the circuit 21 causes a reception clock generation circuit 8 to generate a reception clock with a higher frequency. When the accumulated data size becomes lower than a low threshold, the reception clock is generated with a lower frequency. Based on the reception clock fed from the reception clock generation circuit 8, an audio/video decoder 7 decodes the audio/video data coming from the reception buffer 6. This invention applies advantageously to a television transmission and reception system for transmitting and receiving TV broadcast signals.
摘要:
In an antenna, a feeding radiation element and a first non-feeding radiation element that are loaded with dielectric substances are provided on a ground electrode, and a second non-feeding radiation element is disposed such that substantially the entire second non-feeding radiation element projects outside from a desired side of the ground electrode. More specifically, each of the three electrode elements is loaded with a dielectric substance, and a radiation electrode of the second non-feeding radiation element is electrically connected at a substantially central location of the desired side of the ground electrode via a connection wire.
摘要:
A feed radiation electrode including two branched radiation electrodes is provided on the surface of a substrate. Non-feed radiation electrodes are provided on both sides of the feed radiation electrode and near the branched radiation electrodes. The branched radiation electrode and the non-feed radiation electrode are double-resonated in the same frequency band. The branched radiation electrode and the non-feed radiation electrode are double-resonated in the same frequency band which is higher than that of the branched radiation electrode and the non-feed radiation electrode.
摘要:
An image data encoding apparatus and decoding apparatus which perform encoding and decoding making effective use of the correlation of positional information of characteristic points of the luminance signal element and chrominance signal elements of image data. A first signal analysis unit analyzes the luminance signal Y, from which the low frequency component has been removed, using a filter having several resolution scales s, detects and connects the characteristic points from the results of the analysis, and produces line data. Based on the line data, the values of the results of analysis are extracted. A second signal analysis unit performs similar processing on the chrominance signal U and a third signal analysis unit performs similar processing on the chrominance signal V. First to third analysis result compression units compress the input signal by predictive encoding etc. The first to third signal analysis units produce the low frequency components of the luminance signal Y and the chrominance signals U and V. A low frequency component compression unit compresses the low frequency components. A transformation unit multiplexes and modulates the signal obtained by the above processing and inputs it to the transmission medium etc. connected to the encoding apparatus.
摘要:
A thin film magnetic head has a lower magnetic layer and an upper magnetic layer formed over the lower magnetic layer so that a small gap is formed between a magnetic gap section of the lower magnetic layer near a sliding surface to be brought into sliding contact with a magnetic recording medium and a magnetic gap section of the upper magnetic layer extending in parallel to the magnetic gap section of the lower magnetic layer near the sliding surface. The upper magnetic layer has a first sloping section extending from the magnetic gap section at an inclination .theta..sub.1 in a range defined by 2.degree..ltoreq..theta..sub.1 .ltoreq.25.degree. to the upper surface of the lower magnetic layer, and a second sloping section extending from the first sloping section at an inclination .theta..sub.2 in a range defined by: 30.degree..ltoreq..theta..sub.2 .ltoreq.80.degree. to the upper surface of the lower magnetic layer. Magnetic flux leaks across the lower magnetic layer and the first inclined section of the upper magnetic layer, so that the magnetic saturation of the magnetic gap section of the upper magnetic layer is prevented. Since the second sloping section is inclined at a large inclination, the overwrite characteristics is not deteriorated.