受験番号：26IPE002

問1
1. An energy dispersive X-ray detection device configured toperform elementary analysis by irradiating an electron beam, an X-ray,or the like, to a sample and detecting a characteristic X-ray generated
from a surface of sample, the energy dispersive X-ray detection device
comprising:an element holder configured to contain a semiconductor X-ray
detecting element, and provided with a cylindrical female screw, anda finger body configured to contain asubstrate including afirst-stage FET for amplifying a single from the semiconductor X-ray
detecting element, including a cooling mechanism, and provided with amale screw,
wherein the semiconductor X-ray detecting element is configured
to be fixed by fastening an element holder and a finger body with thefemale screw and the male screw.
2. The energy dispersive X-ray detection device according toclaim1, wherein while the element holder containing a semiconductor
X-ray detecting element is manufactured with a metal material having
a high coefficient of thermal expansion, the finger body containing asubstrate including a first-stage FET is manufactured with a metalelement having a lower coefficient of thermal expansion than the elementholder.
3. The energy dispersive X-ray detection device according to claim
1, wherein a slit opening is provided on the element holder so as tobe able to run high-voltage wiring for supplying a voltage to an electrodeof semiconductor X-ray detecting element through the element holder.
(*)コメント: 原文にて前記が付されていない語については定冠詞を付しませんでした。
問2
As a conventional and typical image compression method, there
is a JPEG method standardized by ISO. It is known that this method uses
discrete cosine transformation, and in a case that a relatively large
number of coding bits are assigned, provides excellent coded images anddecoded images. However, in a case that the number of coding bits arereduced to a certain extent or more, block distortion becomes remarkableand deterioration becomes subjectively conspicuous.
Meanwhile, in recent years, methods in which an image is divided
into multiple bands by a filter that is called as a filter bank andcombines a high pass filter and a low pass filter, and each of the bands
is coded, are actively studied. Among that, wavelet transformation
coding is regarded as the most likely new technique replacing DCT,
because this coding does not have a flaw in which the block distortion
becomes remarkable in high-compression as DCT.
For example, JPEG2000 for which international standardization
finished on January, 2001, adopts a method combining this wavelet
transformation

andhigh-efficiententropycoding,andrealizes

significant improvement of coding efficiency compared to JPEG.
問3
Specifically, the electronic paper device 26 is a well-known
self-writing type capable of displaying given information as an image
on an image display unit in a state of being applied a voltage, andretaining the image in a state of not being supplied a voltage, in astate that a voltage is not applied by the microcomputer 23, to eachof pixel electrodes configuring a matrix on the image display unit via
a driver, while a negatively (-) charged white particle remains on aback side of the image display unit, a positively (+) charged black
particle remains on a front side, and thus the image display unit turns
into a state of being colored black when viewed from the front side ofthe image display unit. In addition, the driver operates based onelectronic data outputted from the microcomputer 23, inverts polarityof the pixel electrode of a necessary portion of the matrix according
to information to be displayed as an image, then positional relations
among the white particles and the black particles appropriately switch,and the information is displayed as an image on the image display unit
with contrast of the white particles and the black particles. Further,
the electronic paper device 26, even in no power supply condition inwhich a voltage is not applied to each of the pixel electrodes configuring
the matrix on the image display unit via the driver, is capable ofmaintaining an image display state as it is.