Abstract: A measurement signal generating circuit for a linear scale capable of increasing an S/N ratio of a signal for measurement of a linear scale. A photo detector or a low-pass filter for removing noise entering the measurement signal generating circuit is arranged rearwardly of each of an A phase signal generating circuit and a B phase signal generating circuit. Such construction permits a noise component at a different phase as well as that at the same phase to be effectively removed during synthesis of the measurement signal, to thereby reduce an error in measuring by the linear scale.

Abstract: A phosphor is prepared by depositing a compound semiconductor of Groups III-V in the form of fine particles or a thin film on a surface of a carrier particle by hetero-epitaxial growth. Thus, the phosphor increased in quality is obtained with satisfactory reproducibility.

Abstract: A method for preparing a gallium nitride phosphor which is capable of emitting light at luminance increased to a degree sufficient to permit the phosphor to be practically used. A dopant compound containing elements reacted with H2 and gasified by heating is arranged on an upstream side in a calcination oven in which NH3 is flowed and a matrix element compound is arranged on the downstream side therein, resulting in calcination of the compound being carried out. This permits GaN to be surrounded with ammonia and the dopant during the calcination, so that the GaN phosphor may be fully doped with the dopant.

Abstract: A display-integrated tablet device capable of improving luminance of an image displayed while carrying out coordinate detection plural times during a one-image-plane display period. X-coordinate detection is carried out in a manner to take, in an X-coordinate detection section, a voltage obtained by feeding each of second gate electrodes with a pulse generated in a pen-pulse generation circuit. Y-coordinate detection is carried out by inputting a voltage obtained by outputting of a pulse for scanning Y-electrodes (lines) from a stylus pen to a Y-coordinate peak detection circuit. After coordinate detection is thus executed, only Y-electrodes in a predetermined range about a Y-coordinate previously detected are scanned in a Y-coordinate detection period provided after each of block display periods defined by dividing an image display period.

Abstract: A fluorescent display device including a planar cathode is provided which is capable of carrying out setting of an interval between a cathode and an anode and alignment therebetween with high precision. A cathode substrate having an FEC formed thereon is mounted through a lead frame on support members. Lead wires of the lead frame are abutted against bumps on the cathode substrate. An anode substrate having a holding frame attached thereto is positioned with respect to the cathode substrate and the holding frame and lead frame are fixed to each other. Both substrates thus temporarily fixed to each other are combined with a casing while keeping the cathode substrate facing down. Then, the anode substrate and casing are sealedly connected to each other.

Abstract: A fuel regulation apparatus of an engine for a model which is possible to regulate the flow rate of the fuel according to the rotational frequency of the engine is provided. A main body 31 of a fuel regulation apparatus 30 is provided with a fuel inlet 32, a fuel outlet 33, and an air inlet 42 to which air pressure from a crankcase is applied. The inlet 32 and the outlet 33 are connected therewith through a passage 34 having a seat face 37. A regulating valve 35 is placed in the passage 34 to close the seat face 37. A spring 38 pushes the regulating valve 35 in such a direction as to close the seat face. The other end of the regulating valve 35 is in contact with a piston 39. A position of an air inlet 42 can be adjusted by a screw 43. The spring pushes the piston 39 in such a direction as to open the seat face 37. The outlet 33 is connected to a fuel injection apparatus. The fuel injection apparatus injects the fuel into a crankcase.

Abstract: A printer head capable of increasing intensity of dot-like light irradiated onto a record medium without requiring to increase a drive voltage or the number of printer heads arranged. The optical printer head includes a luminous element including two luminous dot arrays arranged in parallel to each other at a predetermined interval in a sub-scanning direction. The luminous dot arrays each are constituted of a plurality of luminous dots which have a dimension in the sub-scanning direction increased by a predetermined magnification as compared with that in a main scanning direction and are spaced from each other at identical intervals in the main scanning direction. The luminous dots of the two luminous dot arrays are arranged in an offset manner while being deviated from each other in the main scanning direction by a distance equal to the dimension thereof in the main scanning direction.

Abstract: A fluorescent material and a display device incorporating the fluorescent material are described. The fluorescent material is a mixture including a phosphor which is excitable at a voltage of 1 kV or higher for emitting light and a phosphor which is excitable at a voltage of 1 kV or lower for emitting light, wherein each phosphor emits light of the same color and the fluorescent material is luminous at an anode voltage of 2 kV or lower. The fluorescent display device accelerates electrons emitted from an electron source at an anode voltage of 2 kV or lower and rushes these electrons against an anode for exciting the fluorescent material present on the anode. The fluorescent material is a mixture as set forth above.

Abstract: A field emission cathode that can uniform the number of electrons emitted from each emitter and can prevent a line defect even when a gate electrode is electrically short-circuited with an emitter. The movement of electrons in a channel formed on the channel forming electrode is controlled by applying a positive voltage to the current control electrode, so that the current supplied from the cathode electrode to the emitter can be controlled. If the emitter is short-circuited with the gate electrode, the increased current density destroys the channel, so that the current supply to the emitter can be stopped.

Abstract: A fluorescent luminous device capable of providing a fluorescent luminous device including a non-sulfide phosphor which is reduced in resistance and emits light of a reddish luminous color. The fluorescent luminous device is so constructed that the phosphor layer is made of a non-sulfide phosphor excited by luminescence of a ZnO:Zn phosphor to emit light of a yellowish red luminous color. The ZnO:Zn phosphor is deposited on the non-sulfide phosphor.

Abstract: A receive antenna selection method and a diversity receive capable of preventing a deterioration in transmission efficiency in a multipath environment. A receive antenna for receiving a packet is selected during a period of time for which a preamble section of the packet is received, to thereby keep change-over between packets from being carried out during receiving of the packet. This eliminates a situation that a packet must be nullified due to generation of a bit error by change-over between receive antennas during receiving of the packet, to thereby keep transmission efficiency from being deteriorated even in a multipath environment.

Abstract: A display device capable of realizing stepless gradation expression depending on a video signal inputted, to thereby highly improve quality of an image displayed. An FET element is arranged for each of cathode electrodes to permit a drain current obtained depending on a voltage of a video signal applied to a gate of each FET element to be fed to each cathode electrode. Also, a video signal correction circuit is arranged for providing the video signal applied to each FET element with characteristics reverse to gate/source voltage-drain current characteristics of the FET element. Such construction permits a cathode current to be controlled in a stepless manner depending on a level of the video signal, to thereby realize stepless gradation expression depending on the video signal, resulting in quality of an image displayed being extensively increased.

Abstract: A field emission element in which a cathode substrate and an anode substrate are spaced from each other and are hermetically sealed. The field emission element comprises cathode electrodes and gate terminals formed on the cathode substrate; an insulating layer overlaying the cathode electrodes and the gate electrodes, the cathode electrodes and the gate terminals being partially extracted outward from the insulating layer, gate electrodes formed on the insulating layer, wherein the gate electrodes are arranged so as to cross said cathode electrodes at intersections, openings each being formed through a cathode electrode and an insulating layer at each of the intersections, a resistance layer at least formed on a part of each of the cathode electrodes, and emitter electrodes each electrically connected to a cathode electrode via the resistance layer formed within an opening.

Abstract: A method for producing a phosphor made of luminous inorganic particles of a nanostructure which is capable of keeping a surface of the phosphor from being polluted by any by-product and controlling a particle diameter distribution of the phosphor as desired. A carbon material and an inorganic salt are mixed together to prepare a mixture, which is then heated, to thereby form an interlaminar compound. Then, the interlaminar compound is subject to a treatment using an eliminating agent, leading to production of luminous inorganic compound particles adhered to the carbon material.

Abstract: A blowing type aroma apparatus, involving no danger of fire and being capable of providing a natural aroma. A body of the aroma apparatus has an opening in its upper surface. A container for containing a liquid aromatic and a cylinder surrounding this container and having open upper and lower ends are located in the opening. An impregnator impregnated with the aromatic is disposed in the container. An axial flow fan is housed beneath the opening within the body and the air flow generated by the axial flow fan passes through the support member and flows into a space between the cylinder and the container. The air becomes a laminar flow and rises in the space between the cylinder and the container. The air flow permits the volatilization of the aromatic contained in the impregnator, whereby the aroma is diffused from the opening at the upper end of the cylinder.

Abstract: A phosphor capable of being reduced in activity of a surface thereof, to thereby minimize adsorption of gas thereon, release of gas therefrom and the like, to thereby ensure protection of the surface. The phosphor of the present invention is coated with a diamond-like carbon (DLC) film. Such coating reduces an activity of a surface of the phosphor. Also, the phosphor may be used for a display section of a display device. This permits durability of the phosphor to be increased and prevents a deterioration of a cathode, resulting in the display device being increased in durability.

Abstract: A field emission type fluorescent display device capable of exhibiting high luminescence under a low voltage while minimizing leakage luminescence and color mixing, to thereby improve display quality. An anode and a field emission cathode are arranged opposite to each other and the cathode is divided into a plurality of unit regions in a matrix-like configuration, which are matrix-driven, resulting in a display being selectively carried out. The unit regions each are divided into a plurality of subregions and the cathode and anode are divided into a plurality of strip-like electrodes perpendicular to each other, respectively. The strip-like electrode each correspond to each of subregions and are commonly connected to each other at every second interval. Also, a focusing electrode may be arranged between the gate and the anode so as to surround the unit regions.

Abstract: A display device capable of realizing stepless gradation expression depending on a video signal inputted, to thereby highly improve quality of an image displayed. An FET element is arranged for each of cathode electrodes to permit a drain current obtained depending on a voltage of a video signal applied to a gate of each FET element to be fed to each cathode electrode. Also, a video signal correction circuit is arranged for providing the video signal applied to each FET element with characteristics reverse to gate/source voltage-drain current characteristics of the FET element. Such construction permits a cathode current to be controlled in a stepless manner depending on a level of the video signal, to thereby realize stepless gradation expression depending on the video signal, resulting in quality of an image displayed being extensively increased.

Abstract: A mesh grid for a fluorescent display tube capable of effectively preventing a deformed mesh from being in contact with fluorescent substance without disturbing indications on an anode display unit. The mesh grid is mounted over an anode substrate with adhesive. A mesh of the mesh grid is disposed over the anode display unit including a plurality of anode segments. The mesh is formed in a hexagonal pattern. On the mesh, protruding portions directed to the anode display unit are formed. The protruding portions are disposed at positions opposing the anode display unit but not opposing each of the anode segments. The protruding portions are formed by pressing the mesh toward the anode display unit with each intersection of fine wires in a hexagonal pattern.

Abstract: A vacuum container capable of arranging a getter member therein while preventing an increase in overall height of an envelope and therefore the vacuum container. An anode substrate on which anode electrodes providing a display section are formed and a cathode substrate on which field emission cathodes are formed are arranged opposite to each other and sealedly joined to each other through an outer periphery thereof, to thereby provide an envelope. The cathode substrate is formed with a through-hole communicating with an interior of the envelope. The through-hole has a getter member received therein. The cathode substrate is provided on a portion of an outer surface thereof at which the through-hole is formed with an evacuation pipe through which the envelope is evacuated.