Abstract: A perforated plate-shaped material in which a surface property/shape of a main surface of the plate-shaped material is maintained in at least a part of a hole surface forming a hole in the plate-shaped material are provided. The perforated plate-shaped material has at least one through hole penetrating from a first main surface to a second main surface opposite thereto, and in its cross-sectional shape, it has a smallest width portion on the hole surface and a first main surface portion where the hole surface terminates on the first main surface and includes a first projecting curve portion between the first main surface portion and the smallest width portion, and at least a part of the first projecting curve portion has a surface property/shape of a non-hole surface on the first main surface.

Abstract: The power supply apparatus includes the feedback winding of a transformer having a first winding, and a second winding whose number of turns is larger than that of the first winding. A voltage output from the transformer is detected. Based on the detected voltage, connection between a switch element and the first winding or the second winding is switched.

Abstract: The power supply apparatus includes the feedback winding of a transformer having a first winding, and a second winding whose number of turns is larger than that of the first winding. A voltage output from the transformer is detected. Based on the detected voltage, connection between a switch element and the first winding or the second winding is switched.

Abstract: An optical wireless communications system has a first optical wireless communications apparatus for transmitting a pilot beam and a second optical wireless communications apparatus for receiving the pilot beam to have a match for an optical axis of the first optical wireless communications apparatus and another optical axis of the second optical wireless communications apparatus. The first optical wireless communications apparatus has a modulator for modulating the pilot beam with a specific signal. The second optical wireless communications apparatus has a demodulator for demodulating the modulated and transmitted pilot beam to reproduce the specific signal and sending the reproduced specific signal to at least either the second optical wireless communications apparatus or an apparatus connected to the second optical wireless communications apparatus.

Abstract: An optical-axis directional indicating apparatus for optical communication includes a photoreceptor having a light-receiving surface and a plurality of optical receiving elements arranged on the surface in a first direction and a second direction orthogonal to the first direction, to receive a transmitted light beam, a detector to detect levels of the light beam received at the optical receiving elements, a plurality of display elements arranged in the first and second directions so as to correspond to the optical receiving elements of the photoreceptor, and a switch circuit to selectively turn on or off the display elements in accordance with the levels of the light beam detected by the detector, to indicate whether or not an optical axis of the light beam is deviated in the first and/or the second direction on the light-receiving surface of the photoreceptor.

Abstract: An electronic device capable of efficiently cooling an integrated circuit element provided in such a way as to enable a heat exchange on a cold plate. The electronic device contains a circuit board mounted with an integrated circuit element requiring measures against heat generation in a single case, comprising: a cold plate mounted on the integrated circuit element in such a way as to enable a heat transfer from the integrated circuit element; a heat exchanger for cooling brine heated by the cold plate by circulating the brine; a fan casing forming an air way from a blower fan at an opening on a surface of the case to the heat exchanger; a reserve tank and a pump provided in order in a brine flow from the heat exchanger to the cold plate; and a linear brine passage formed in the cold plate and having at least one pair of back and forth channels.

Abstract: A retractable roof fixing apparatus capable of drawing the roof to a vehicle body to be snugly fixed thereto by automatically retracting a striker engaged with a latch by a sufficient distance. The retractable roof fixing apparatus comprises: a striker fixed on a roof; a base plate fixed on a body of a vehicle; a slide plate slidably attached to the base plate in a direction of movement of the striker; a latch rotatably mounted on the slide plate that engages the striker with a rotation of the latch; a cam rotatably mounted on the base plate; and a motor that rotates the cam, wherein the motor operates when the striker engages the latch to rotate the cam so as to slide the slide plate away from the roof.

Abstract: An IP address distribution system for distributing an IP address to a client device connected to an IP network based on distribution request information received from the client device, comprises: a lease condition storage unit that stores lease conditions corresponding to the client device indicating conditions relating to approval/prohibition of IP address distribution; an initial control unit that, when the distribution request information is received from the client device, approves the IP address distribution to the client device and stores initial lease conditions corresponding to the client device into lease condition storage unit, if the lease conditions corresponding to the client device are not stored in the lease condition storage unit; a condition modification unit that modifies the lease conditions corresponding to the client device stored in the lease condition storage unit; and an IP address distribution approval/prohibition control unit that controls approval/prohibition of IP address distribu

Abstract: A retractable roof fixing apparatus capable of drawing the roof to a vehicle body to be snugly fixed thereto by automatically retracting a striker engaged with a latch by a sufficient distance. The retractable roof fixing apparatus comprises: a striker fixed on a roof; a base plate fixed on a body of a vehicle; a slide plate slidably attached to the base plate in a direction of movement of the striker; a latch rotatably mounted on the slide plate that engages the striker with a rotation of the latch; a cam rotatably mounted on the base plate; and a motor that rotates the cam, wherein the motor operates when the striker engages the latch to rotate the cam so as to slide the slide plate away from the roof.

Abstract: An electronic device capable of efficiently cooling an integrated circuit element provided in such a way as to enable a heat exchange on a cold plate. The electronic device contains a circuit board mounted with an integrated circuit element requiring measures against heat generation in a single case, comprising: a cold plate mounted on the integrated circuit element in such a way as to enable a heat transfer from the integrated circuit element; a heat exchanger for cooling brine heated by the cold plate by circulating the brine; a fan casing forming an air way from a blower fan at an opening on a surface of the case to the heat exchanger; a reserve tank and a pump provided in order in a brine flow from the heat exchanger to the cold plate; and a linear brine passage formed in the cold plate and having at least one pair of back and forth channels.

Abstract: An optical wireless communications system has a first optical wireless communications apparatus for transmitting a pilot beam and a second optical wireless communications apparatus for receiving the pilot beam to have a match for an optical axis of the first optical wireless communications apparatus and another optical axis of the second optical wireless communications apparatus. The first optical wireless communications apparatus has a modulator for modulating the pilot beam with a specific signal. The second optical wireless communications apparatus has a demodulator for demodulating the modulated and transmitted pilot beam to reproduce the specific signal and sending the reproduced specific signal to at least either the second optical wireless communications apparatus or an apparatus connected to the second optical wireless communications apparatus.

Abstract: An optical-axis directional indicating apparatus for optical communication includes a photoreceptor having a light-receiving surface and a plurality of optical receiving elements arranged on the surface in a first direction and a second direction orthogonal to the first direction, to receive a transmitted light beam, a detector to detect levels of the light beam received at the optical receiving elements, a plurality of display elements arranged in the first and second directions so as to correspond to the optical receiving elements of the photoreceptor, and a switch circuit to selectively turn on or off the display elements in accordance with the levels of the light beam detected by the detector, to indicate whether or not an optical axis of the light beam is deviated in the first and/or the second direction on the light-receiving surface of the photoreceptor.

Abstract: A digital broadcast reception device comprises: a broadcast receiving unit 11 that receives a digital broadcast; a TS processing unit 12 and a decode unit 14 that separate video contents and data contents from the received digital broadcast; a image memory unit 15 that stores the separated video contents and data contents in a special-purpose plane and memorizes the separated video contents and data contents temporarily; an image output unit 16 that synthesizes the video contents and data contents stored in the image memory unit 15, generates image data, and output the image data; a remote control 26, an operation reception unit 13, and a processing control unit 20 that acquire a print instruction from an operator; and a print image generation unit 18 that selects and synthesizes the video contents and data contents stored in the image memory unit 15, generates a print data, and outputs the generated print data to a printer 30 in response to the print instruction.

Abstract: A portable information processing apparatus is configured to dissipate heat generated in a cabinet mainly from a part which a user hardly touches, and thus the temperature at a palm rest is suppressed. The cabinet includes a heat conducting spacer 16 provided over a heat-generating component 15 to conduct heat thereof, a heat absorption area 10ah to absorb the heat of the heat-generating component 15 through the heat conducting spacer 16, and a heat conduction obstructing area 10rb provided on a heat conduction path between the heat absorption area 10ah and the palm rest 11 to reduce a cross-sectional area of the heat conduction path. Accordingly, heat conduction from the high-temperature heat generating component 15 to the palm rest 11 is restricted, and thus the temperature of the palm rest 11 can be limited.

Abstract: An extension device 5 is engaged in a connector provided on one side of a lower case 102 of a cabinet 100 of an PIP apparatus PI. An adjustable foot 6 is provided on the bottom surface 102u to adjust the extension device 5 and the cabinet 100 in height. Therefore, the cabinet 100 can be horizontally placed on a plane. When the extension device 6 is approximately equal in height to the lower case 102, the adjustable foot is retracted into the lower case 102. Therefore, the thickness of the PIP apparatus PI can be minimized.

Abstract: A heat exchanger comprises a tube 11 and fin plates 12 attached to the outer surface of the tube. Each fin plate 12 is in the form of a strip sheet which is wider than the diameter of the tube 11, and each fin plate 12 is fitted on the tube 11 and has a semicylindrical recess 20 in the form corresponding to the cylindrical shape of the tube 11. Flat fins 21 extend from both sides of the semicylindrical recess 20. Cut pieces 22a are formed each by a U-shaped cut 22 at a predetermined pitch in the longitudinal direction of the semicylindrical recess 20, and each cut piece is erected outwardly of the semicylindrical recess to thereby form an upstanding fin 23, which is formed on a first fin plate element 18 as well as a second fin plate element 19. Straight tube portion 15 of the tube 11 is fitted between the semicylindrical recesses 20 of the first fin plate element 18 and the second fin plate element 19. In this way, the tube and the fin plate 12 are secured.

Abstract: A polycrystal silicon rod characterized in that it has a half value width of a peak indicative of crystal orientation (111) of an X-ray diffraction pattern, of 0.3.degree. or less, an internal strain rate in a radial direction of less than 5.0.times.10.sup.-5 cm.sup.-1 and an internal iron concentration of 0.5 ppba or less. The above polycrystal silicon rod having high crystallinity, high purity and low internal strain is produced by heating a core material in a gaseous atmosphere comprising trichlorosilane and hydrogen to deposit silicon on the silicon core material to produce a polycrystal silicon rod, and subjecting the polycrystal silicon rod to a heat treatment without allowing it to contact with the air, to remove strain contained therein.

Abstract: Herein disclosed is a method for mutual transformation between the data of a light-source color on a color CRT monitor and the light-source color. The transformation can be performed by using any of the following two formulas:R.sub.c (.lambda.)=[I.sub.c (.lambda.)/I.sub.g (.lambda.)]R.sub.G (.lambda.);and ##EQU1## wherein: Both R.sub.c (.lambda.), and X, Y and Z express the non-luminous object color data which are designated at a spectral reflectance factor and the CIE tristimulas values, respectively; andBoth I.sub.c (.lambda.), and R.sub.c, G.sub.c and B.sub.c express the light-source color data, which are designated at a spectral distribution and the RGB video drive signals, respectively.Unknown parameters R.sub.G (.lambda.) and I.sub.G (.lambda.), and K.sub.R, K.sub.G and K.sub.