受験番号：26IPE010

門１
Claim 1
An energy-dispersive X-ray detection device for irradiating a sample with anelectron beam, X-rays, etc. to detect and perform elemental analysis on characteristic
X-rays emitted from the surface of the sample, wherein said device is characterized bycomprising an element holder which houses a semiconductor X-ray detection element
and is provided with a cylindrical internal screw, and a finger body which houses a
substrate having a first-stage FET for amplifying signals from the semiconductor X-ray
detection element, has a cooling mechanism, and is provided with an external screw,
the element holder and the finger body being fastened together by means of theinternal screw and the external screw, thereby securing the semiconductor X-ray
detection element.
Claim 2The

energy-dispersive

X-ray

detection

deviceaccording

to

claim

1,

characterized in that the element holder for retaining the semiconductor X-ray
detection element is made from metal stock having a large thermal expansion
coefficient, whereas the finger body retaining the substrate that has the first-stage FET
is made from metal stock having a small thermal expansion coefficient relative to theelement holder.
Claim 3Theenergy-dispersive

X-ray

detection

deviceaccordingtoclaim1,

characterized in that the element holder is provided with a slit opening so thathigh-voltage wiring for supplying voltage to an electrode of the semiconductor X-ray
detection element can be passed through the element holder.
門２
One conventional and representative image compression format is the JPEG
format standardized by the ISO. This format uses discrete cosine transforms (DFT), andis known to yield excellent encoded as well as decoded images when a relatively large
number of encoded bits are allocated. However, reducing the number of encoded bits to acertain extent or more results in pronounced block deformation, whereby deteriorationin image quality becomes subjectively apparent.
Recently, however, there has been a great deal of development of formats inwhich images are divided into a plurality of bands by means of a combination of filtersincluding both high-pass and low-pass filters, known as a filter bank, and then each of
the bands is encoded. From among these developments, wavelet-transform encoding ishighly regarded as a new technique to be used in place of DCT because
wavelet-transform encoding does not suffer from the drawback of pronounced block
deformation at high compression rates, as DCT does.
JPEG 2000, for example, which was fully internationally standardized as ofJanuary 2001, employs a format combining the abovementioned wavelet transform withhighly efficient entropy encoding, and is a vast improvement over JPEG in terms ofencoding efficiency.
門３
More specifically, the electronic paper device 26 is a conventionally known
self-writing electronic paper device that is capable of displaying prescribed information
as an image on a display unit when in a voltage-applied state and maintaining thisdisplay when in a non-powered state. By means of the microcomputer 23, when novoltage is being applied via the driver to the pixel electrodes constituting the matrix onthe display unit, negatively charged white particles remain on the back surface side of
the image display unit, while positively charged black particles remain on the front
surface side of the image display unit, such that the image display unit appears to becolored black when viewed from the front surface side. The driver operates on the basisof electronic data output from the microcomputer 23, and when the polarity of therequisite pixel electrodes of the matrix is reversed in accordance with the information to
be displayed as an image, the positional relationships between the white particles andblack particles are switched, as appropriate, such that information represented by thecontrast between the white particles and black particles is displayed as an image on thedisplay unit. Moreover, the electronic paper device 26 is capable of maintaining, on theimage display unit via the driver, the image display state as is even when in a
non-powered state in which no voltage is applied to the pixel electrodes constituting thematrix.