摘要:
A color cathode ray tube panel has a glass face portion including a substantially flat outer surface facing a viewer and an inner surface on which a phosphor screen is coated. The inner surface is concavely curved with a radius of curvature R.sub.x in a direction of a horizontal axis of the cathode ray tube, and the following conditions are satisfied: ##EQU1## where W.sub.h denotes a horizontal width of an effective area of picture in the face portion, L denotes an optimum viewing distance, n.sub.1 denotes a refractive index of the face portion, and t denotes a thickness of the face portion at its center.
摘要:
An exposure system including a master mask used for exposing a glass panel to form a plurality of phosphor stripes or dots on an inner surface of the glass panel wherein the master mask and/or a light source are movable for correction of an exposure position, thereby eliminating the need to attach and remove a color selecting mechanism to and from the glass panel when the glass panel is exposed to form a fluorescent screen on the inner surface of the glass panel.
摘要:
A thin flat cathode-ray tube can optimize stress which is generated in each part also when its screen size is increased and maintains high reliability particularly in connection strength in a joint portion between a front glass vessel and a back metal vessel, without deteriorating the joint portion in reliability also in working for mounting electric signal input terminals and an exhaust pipe on the back metal vessel. In the flat cathode-ray tube which is formed by joining side surface portions of the front glass vessel and the back metal vessel with each other, the back metal vessel has the side surface portion of a prescribed width extending along that of the front glass vessel and a bottom surface portion opposed to a fluorescent screen of the front glass vessel, while the bottom surface portion is depressed by a prescribed amount toward the fluorescent portion and a corner portion connecting the side surface portion with the bottom surface portion is at a prescribed radius of curvature.
摘要:
An image display device has a front case provided with a phosphor screen on an inner surface thereof; a rear case facing the front case; a sealing portion with which the front case and the rear case are hermetically sealed so that an airtight chamber is formed between the inner surface of the front case and an inner surface of the rear case; and a cathode board including a cathode which is disposed within the airtight chamber and faces the phosphor screen and a wiring pattern for applying a voltage to the cathode. The the cathode board is held between the front case and the rear case by the sealing portion so that the cathode board is not in contact with the inner surface of the front case and the inner surface of the rear case.
摘要:
A mobile terminal displays a screen image provided by an image data which is produced. An in-vehicle apparatus is fixed to a vehicle or is mounted on the vehicle to be portable. The mobile terminal sends the image data to the in-vehicle apparatus through communication such that a vehicle display portion of the in-vehicle apparatus displays a screen image provided by the image data. In a case where a communication between the in-vehicle apparatus and the mobile terminal is established, when one of the mobile terminal or the in-vehicle apparatus, in which an input operation has been performed prior to the other of the mobile terminal or the in-vehicle apparatus, is in operation, only the one of the mobile terminal or the in-vehicle apparatus is operable.
摘要:
An array antenna apparatus in which an SN ratio is improved. Antenna elements having transmission modules, respectively, are arranged in plurality, wherein the plurality of transmission modules respectively have transmission signal generators that each output a transmission intermediate frequency signal, local oscillation signal generators that each output a local oscillation signal, and transmission mixers that each mix the transmission intermediate frequency signal and the local oscillation signal with each other, thereby to carry out frequency conversion to a transmission high frequency signal. A reference signal source inputs a reference signal to the transmission signal generators and the local oscillation signal generators. The transmission intermediate frequency signal and the local oscillation signal are synchronized with each other by the reference signal.
摘要:
A transmission module including a power supply voltage control unit that sets a power supply voltage to the high frequency amplifier in a variable manner, and a control circuit that controls an amplitude control unit, a phase control unit and the power supply voltage control unit. The control circuit and the power supply voltage control unit control the power supply voltage in accordance with an output power of the high frequency amplifier. The transmission module can carry out not only phase control but also amplitude control in a continuous manner, while suppressing amplitude and phase variation, and a high frequency amplifier in the transmission module is made highly efficient. In addition, a large directional gain, a low side lobe level and a low power consumption are achieved, as a phased array antenna apparatus using a transmission module.
摘要:
A high pressure fuel pump for use with a direct injection engine having a housing which defines a pump chamber. A port is formed in the housing which fluidly connects a fuel in the passageway with the pump chamber. An elongated valve is movably mounted within the housing between an open and a closed position. In its open position, the inlet passageway is fluidly connected with the pump chamber while, conversely, in the closed position the fuel valve blocks the fluid flow between the inlet passageway and the pump chamber. A circuit controls the deceleration of the valve to reduce pump noise.
摘要:
A noise reducing apparatus and associated method and program for improving image quality in an image are provided. The noise reducing apparatus detects a flat area from an image and analyzes the noise from the flat area, and then it suppresses a noise component of the image based on the noise analysis result.
摘要:
A nitride-based semiconductor light-emitting device of an embodiment includes a semiconductor multilayer structure having a growing plane which is an m-plane and being made of a GaN-based semiconductor. The semiconductor multilayer structure includes a n-type semiconductor layer, a p-type semiconductor layer, a p-side electrode provided on the p-type semiconductor layer, and an active layer interposed between the n-type semiconductor layer and the p-type semiconductor layer. The ratio of the thickness of the active layer to the thickness of the n-type semiconductor layer, D, is in the range of 1.8×10−4≦D≦14.1×10−4. The area of the p-side electrode, S, is in the range of 1×102 μm2≦S≦9×104 μm2. A maximum current density which leads to 88% of a maximum of the external quantum efficiency is not less than 2 A/mm2.
摘要翻译:实施方式的氮化物系半导体发光元件具有半导体层叠结构,该半导体层叠结构具有作为m面的生长面并由GaN系半导体构成。 半导体多层结构包括n型半导体层,p型半导体层,设置在p型半导体层上的p侧电极以及介于n型半导体层和p型半导体层之间的有源层 半导体层。 有源层的厚度与n型半导体层的厚度D之比在1.8×10 -4 @ D @ 14.1×10 -4的范围内。 p侧电极S的面积在1×102mum2 @ S @ 9×104mum2的范围内。 导致外部量子效率最大值的88%的最大电流密度不小于2A / mm2。