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59results about How to "Simple and low-cost configuration" patented technology

Hydropneumatic spring

A hydropneumatic spring, which is preferably articulately arranged between a vehicle body and a wheel guiding part in motor vehicles, has a fluid-filled cylinder which is entered by an outwardly sealed piston rod having a piston connected at the internal end. For altering spring force-deflection progressivity characteristic, a first working chamber of the cylinder is in constant hydraulic connection with a first spring energy store device and a second working chamber of the cylinder is in constant hydraulic connection with a second spring energy store device via a second valve device via a first valve device. In a mid spring deflection range, a second spring energy store device is connected via a second valve device and a bypass to the first spring energy store device. The bypass includes an axially extending channel arranged between the first working chamber and the second working chamber. The first and second working spaces are disconnected when the piston is not in the mid-deflection range and the channel does not bypass around the outer surface of the piston.
Owner:MANNESMANN SACHS AG

Method for driving liquid crystal display, liquid crystal display device and monitor provided with the same

A method is provided for driving a liquid crystal display capable of preventing degradation of linearity of a gamma characteristic, of achieving display of a high quality image in a simple and low-priced configuration and of solving problems associated with environmental changes, frequency characteristic of timing signals, change in a gamma characteristic caused by luminance of a backlight, or dispersion in a gamma characteristic occurring during processes of manufacturing a color liquid crystal display. The method includes acquirement of first corrected red data, first corrected green data, and first corrected blue data each being of 10 bits to which information to change a gray scale two or more times for every red data, green data, and blue data has been added when a gamma correction is made to red, green, and blue data each being of 8 bits and generation of data red, green, and blue signals to be fed to a data electrode of a liquid crystal display to perform frame rate control.
Owner:HANNSTAR DISPLAY CORPORATION

Laser radar device

Disclosed is a laser radar device including optical branching couplers each of that branches a laser light oscillated, optical modulators each of that modulates a laser light after being branched, an optical combining coupler that combines laser lights modulated by the optical modulators, an optical combining coupler that combines other laser lights after being branched, an optical system that emits a composite light from the optical combining coupler, and receives lights scattered by a target, an optical combining coupler that combines the scattered lights and a composite light from the optical combining coupler, an optical detector that detects beat signals from a composite light from the optical combining coupler, a signal processing unit that extracts information about the target from the beat signals, and a diffraction grating that emits a light incident thereupon toward a specific direction according to the angle and the frequency of the incident light.
Owner:MITSUBISHI ELECTRIC CORP

Portable telephone compensable for change of antenna impedance

InactiveUS6643497B1Simple and low-cost configurationInfluence of a human body to these antennas can be eliminated or effectively suppressedMultiple-port networksSubstation equipmentAntenna impedanceEngineering
A portable telephone is provided, which eliminates or effectively suppresses the change of the antenna impedance due to approach or contact of a human body with the telephone. The telephone operates without using sensing detection devices for recognizing the actual approach or contact of a human body with the phone. The device insures the desired antenna characteristics with a simple and low-cost configuration. Different impedance values of an impedance matching subsystem are switched so as to be interlocked with a start and stop of a talking state of the portable telephone.
Owner:NEC CORP

RZ-DPSK optical receiver circuit

A received RZ-DPSK signal is guided to an interferometer. The interferometer comprises a 1-bit delaying element in an upper arm. A balanced photodiode converts a pair of optical signals output from the interferometer into electrical signal. A high-pass filter, which has a cut-off frequency equal or approximately equal to the symbol rate of transmission data, filters the signal output from the balanced photodiode. A BPSK demodulator circuit demodulates the output signal of the high-pass filter.
Owner:FUJITSU LTD

Guillotine cutter

A lower guillotine cutter blade (2) is mounted to a frame (1). A guillotine cutter-blade holder (3) holds an upper guillotine cutter blade (4) and vertically reciprocates with respect to the lower guillotine cutter blade (2). Rods (6) are vertically slidably mounted to the guillotine cutter-blade holder (3). A pressing plate (5) is secured to the lower ends of the rods (6). Springs (7) are fitted around the rods (6) between the guillotine cutter-blade holder (3) and the pressing plate (5) for downwardly elastically biasing the rods (6) so that the heads (6a) of the rods are kept abutted against the guillotine cutter-blade holder (3). In a cutting operation, after the pressing plate (5) is brought into abutment with a batch of paper (20), the guillotine cutter-blade holder (3) is further downwardly moved, thereby causing the lower and upper guillotine cutter blades (2 and 4) to cut the batch of paper (20) and also causing the heads (6a) to upwardly protrude from the guillotine cutter-blade holder (3). At this time, a sensor (8) mounted to the guillotine cutter-blade holder (3) detects the distance to the heads (6a). A thickness measuring element (27) determines the thickness of the batch of paper (2) on the basis of the detection signal.
Owner:HORIZON INTERNATIONAL INC

Vehicle motor driving system

A vehicle motor driving system includes a motor that is installed to an unsprung vehicle body and that generates power for rotating a wheel by being fed with electric power, an inverter that is installed to a sprung vehicle body and that converts direct-current electric power into alternating-current electric power and then feeds the electric power to the motor, and a shielded wire as a power cable that electrically connects the motor to the inverter. A shield layer of the shielded wire is grounded at least one of a location near a connecting portion at which a motor case that accommodates the motor is connected to a suspension arm and a location near a mounting portion at which a hub bearing is mounted in the motor case.
Owner:TOYOTA JIDOSHA KK

Wind turbine generator

The present invention provides a wind turbine generator, in which a rotor head that rotates by receiving external wind with turbine blades generates power by driving a generator installed inside a nacelle and in which the nacelle is installed at a top end of a tower, wherein an introducing vent that takes the external wind into an internal space in the wind turbine generator is provided at a portion of an outer circumference surface of the tower or the nacelle that receives positive pressure due to the external wind; and an exhaust vent that externally exhausts cooling air in the internal space is provided at a portion of the outer circumference surface of the tower or the nacelle that receives the negative pressure due to the external wind.
Owner:MITSUBISHI HEAVY IND LTD

Wireless communication system and test method thereof, and access terminal for testing wireless communication system

A wireless communication system and its test method capable of executing a test of the wireless communication apparatus from a remote place by using a terminal generally used in wireless communication systems are implemented with a low-cost configuration and a simple procedure. A terminal obtained by installing a test AP on a general terminal that is used in general wireless communication systems and that can execute APs via a communication network is placed in a coverage area of a wireless communication apparatus. A maintenance center for the wireless communication system activates the terminal. The terminal executes the test AP and conducts communication with the maintenance center by using control signals and test signals for testing wireless communication system. A test is executed by measuring an actual communication state of the wireless communication system.
Owner:FIPA FROHWITTER INTPROP AG

RZ-DPSK optical receiver circuit

A received RZ-DPSK signal is guided to an interferometer. The interferometer comprises a 1-bit delaying element in an upper arm. A balanced photodiode converts a pair of optical signals output from the interferometer into electrical signal. A high-pass filter, which has a cut-off frequency equal or approximately equal to the symbol rate of transmission data, filters the signal output from the balanced photodiode. A BPSK demodulator circuit demodulates the output signal of the high-pass filter.
Owner:FUJITSU LTD

Wireless communication system and test method thereof, and access terminal for testing wireless communication system

A wireless communication system and its test method capable of executing a test of the wireless communication apparatus from a remote place by using a terminal generally used in wireless communication systems are implemented with a low-cost configuration and a simple procedure. A terminal obtained by installing a test AP on a general terminal that is used in general wireless communication systems and that can execute APs via a communication network is placed in a coverage area of a wireless communication apparatus. A maintenance center for the wireless communication system activates the terminal. The terminal executes the test AP and conducts communication with the maintenance center by using control signals and test signals for testing wireless communication system. A test is executed by measuring an actual communication state of the wireless communication system.
Owner:FIPA FROHWITTER INTPROP AG

Device for eliminating the front and end trimmings from series of rolls and for sorting the rolls

The device for removing front and end trimmings in a series of aligned rolls comprises: at least one continuous flexible suction conveyor (13); a suction system (3) associated with the conveyor so as to generate a suction through openings (13A) in the conveyor; a device for eliminating trimmings along a roll transfer path; a device receiving rolls from the conveyor. The receiver comprises at least two alternate paths for the rolls, which are arranged in sequence along the conveyor (13) and onto which the rolls may be alternately sorted.
Owner:FABIO PERINI SPA

Wavelength multiplexing transmission system

A wavelength multiplexing transmission system including an optical transmission and reception device including a plurality of transponders each having a plurality of optical transmitters and receivers, a BER monitoring device to monitor the BERs of the optical transmitters and receivers, variable optical attenuators to attenuate light signals outputted from the optical transmitters and receivers, a controller to control the amounts of attenuation of the variable optical attenuators such that the sum total of the BERs of the optical transmitters and receivers becomes small, and an optical multiplexing and demultiplexing device to multiplex the light signals attenuated into a light signal and transmit this light signal to outside the system, and demultiplex a light signal from outside the system into light signals and transmit these light signals to the optical transmitters and receivers.
Owner:MITSUBISHI ELECTRIC CORP

Cream solder printing metal mask with positioning function and its positioning method

Rectangular positioning lands are formed on a circuit board, and rectangular positioning openings are formed in a metal mask. In addition, the positioning lands and positioning openings are formed such that their long side length becomes identical, and short side of the positioning opening becomes narrower than that of the positioning land. This enables to modify the deviation angle θ between the circuit board and the metal mask, and positional deviation in X and Y directions of the circuit board, during performing test printing, by modifying the position of the metal mask with respect to the circuit board, such that exposed excess parts, on which cream solder is not formed, are formed on the positioning lands, and the excess parts formed upper and lower sides of the cream solder mutually keep a constant spacing to become a same width.
Owner:ORION ELECTRIC CO LTD

High intensity discharge lamp, driving apparatus for high intensity discharge lamp, and high intensity discharge lamp system

In a high intensity discharge lamp, at least one of an arc bend amount and an apparent width of arc is controlled by a simple configuration at low cost. A high intensity discharge lamp system 110 has a high intensity discharge lamp 111 and an operating circuit 113 for driving the high intensity discharge lamp 111. In the high intensity discharge lamp 111, a rare gas and a filling material 136 containing a metal halide as a light generating substance are enclosed in the arc tube 121 provided with a pair of electrodes 122a and 122b. The lamp system is disposed such that the line connecting the electrodes 122a and 122b is horizontal, and by applying a magnetic field having a vertical magnetic flux thereto and by varying the frequency of alternating current for driving the high intensity discharge lamp 111, at least one of an arc bend amount and an apparent width of arc can be easily controlled.
Owner:PANASONIC CORP

Optical pickup apparatus, objective optical element and optical information recording reproducing apparatus

An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. In the optical pickup apparatus, the third light flux which has passed through an optical path difference providing structure forms a first best focus and a second best focus.
Owner:KONICA MINOLTA OPTO

High intensity discharge lamp, driving apparatus for high intensity discharge lamp, and high intensity discharge lamp system

In a high intensity discharge lamp, at least one of an arc bend amount and an apparent width of arc is controlled by a simple configuration at low cost. A high intensity discharge lamp system 110 has a high intensity discharge lamp 111 and an operating circuit 113 for driving the high intensity discharge lamp 111. In the high intensity discharge lamp 111, a rare gas and a filling material 136 containing a metal halide as a light generating substance are enclosed in the arc tube 121 provided with a pair of electrodes 122a and 122b. The lamp system is disposed such that the line connecting the electrodes 122a and 122b is horizontal, and by applying a magnetic field having a vertical magnetic flux thereto and by varying the frequency of alternating current for driving the high intensity discharge lamp 111, at least one of an arc bend amount and an apparent width of arc can be easily controlled.
Owner:PANASONIC CORP

Pitch driving unit for for wind-turbine rotor blade and wind power generator equipped with the same

A pitch driving unit according to the present invention is equipped with hydraulic actuators that change the pitch angles of wind turbine blades; a hydraulic pump that supplies oil to the hydraulic actuators; a high-pressure oil line that guides the oil discharged from the hydraulic pump to the hydraulic actuators; a low-pressure oil line that returns the oil discharged from the hydraulic actuators to the hydraulic pump; and a pressure control unit that stores a surplus amount of the oil and that refills the low-pressure oil line with the oil so as not to generate negative pressure at an oil intake portion of the hydraulic pump, wherein the hydraulic actuators 15, the hydraulic pump, the high-pressure oil line, the low-pressure oil line, and the pressure control unit constitute a closed hydraulic circuit that does not open to the atmosphere, the closed hydraulic circuit being filled with the oil.
Owner:MITSUBISHI HEAVY IND LTD

Mobile communication system

A mobile communication system in accordance with the present invention is a system in which a mobile communication terminal 200 communicates with a plurality of mobile communication base stations 100 simultaneously using a multi-carrier radio communication scheme. It includes an upstream channel quality measuring section 108 for measuring the channel quality information of subcarriers between the mobile communication base stations 100 and the mobile communication terminal 200; and a subcarrier allocation deciding section 16 for deciding the subcarrier allocation for each mobile communication base station 100 according to the channel quality information of subcarriers measured.
Owner:MITSUBISHI ELECTRIC CORP
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