Abstract: Data representing a ground contact time of a tire is transmitted from a tire side device, and received by a vehicle side device to calculate the ground contact time of the tire, to thereby calculate a ground contact length of the tire at that time. In a situation where a tire air pressure may change such as a tire exchange, the ground contact length at that time is set as a reference ground contact length, and a determination reference value is set on the basis of the reference ground contact length. As a result, the relative determination reference value corresponding to the tire type can be set, and a variation of the reduction rate of the tire air pressure when it is determined that the tire air pressure is reduced can be reduced. As a result, the reduction in the tire air pressure can be detected with high precision regardless of the tire type.

Abstract: A communication device changes an applied voltage output from a voltage circuit, and allows a capacitance measuring device to measure the respective capacitance values of a variable capacitance element before and after a change in the applied voltage. The communication device calculates a voltage correction value for correcting an initial variation of the capacitance value of the variable capacitance element using the respective capacitance values of the variable capacitance element before and after the change in the applied voltage, and respective applied voltage values before and after the change, and a correction voltage for canceling the initial variation in the capacitance value of the variable capacitance element, and outputs the correction voltage from the voltage circuit.

Abstract: A road surface condition estimation device includes a tire side device and a vehicle side device. The tire side device includes a vibration detection unit outputting a detection signal indicating a tire vibration magnitude, a signal processing unit, and a transmitter. The signal processing unit extracts a ground contact duration during which a portion of the tread corresponding to an arrangement position of the vibration detection unit is in contact with a ground, calculates a high frequency component level of the detection signal detected during the ground contact duration, counts cumulative rotation number of the tire, and corrects the level of the high frequency component based on the cumulative rotation number of the tire. The transmitter transmits corrected level of the high frequency component as road surface condition data. The vehicle side device estimates a road surface condition of the travelling road based on the received road surface condition data.

Abstract: A road surface condition estimation device includes a tire side device and a vehicle side device. The tire side device includes a vibration detection unit attached to a back surface of a tire tread and outputting a detection signal indicating a tire vibration magnitude, a signal processing unit, and a transmitter. The signal processing unit extracts a ground contact duration during which a portion of the tread corresponding to an arrangement position of the vibration detection unit is in contact with a ground, and calculates a high frequency component level of the detection signal detected during the ground contact duration as road surface condition data. When the ground contact duration is ended, a transmission trigger is transmitted to the transmitter and the transmitter transmits the road surface condition data. The vehicle side device estimates a road surface condition of the travelling road based on the road surface condition data.

Abstract: In a vehicular control device, an operating intention detection unit is disposed on a tire or wheel rim of a vehicle to detect an operating intention of a user relative to an opening/closing body of the vehicle. An operating intention acquisition unit is disposed on the vehicle body of the vehicle to acquire the operating intention. An ID code acquisition unit acquires, from a mobile device carried by the user, an ID code that identifies the user or the mobile device. An ID code determination unit determines whether the ID code is correct. The condition establishment determination unit determines, based on the operating intention of the user and on the result of ID code determination, whether an output condition for outputting operating instruction information that designates an operation of the opening/closing body is established. An output unit outputs the operating instruction information when the output conditions are established.

Abstract: An image reading apparatus includes a feeding mechanism that individually feeds documents, a conveying mechanism that conveys the document fed by the feeding mechanism so that the document passes a reading position, a reading unit that reads the document at the reading position, and a control unit that controls the feeding mechanism and the conveying mechanism. When the control unit causes the feeding mechanism and the conveying mechanism to feed and convey a plurality of documents at constant intervals, the control unit causes the feeding mechanism to stop feeding after a trailing edge of a preceding document passes the reading position.

Abstract: A tire device includes a vibration power generating element, a signal processing unit, and a transmitter. The vibration power generating element is arranged inside a tire and outputs a voltage corresponding to a time variation of a vibration generated in a tread of the tire. The signal processing unit is disposed inside the tire and performs signal processing on the voltage outputted from the vibration power generating element. The transmitter is arranged inside the tire and sends data subjected to the signal processing in the signal processing unit to a device provided outside the tire. The signal processing unit and the transmitter are driven by power generated in the vibration power generating element.

Abstract: A solder joint layer has a structure in which plural fine-grained second crystal sections (22) precipitate at crystal grain boundaries between first crystal sections (21) dispersed in a matrix. The first crystal sections (21) are Sn crystal grains containing tin and antimony in a predetermined proportion. The second crystal sections (22) are made up of a first portion containing a predetermined proportion of Ag atoms with respect to Sn atoms, or a second portion containing a predetermined proportion of Cu atoms with respect to Sn atoms, or both. The solder joint layer may have third crystal sections (23) which are crystal grains that contain a predetermined proportion of Sb atoms with respect to Sn atoms. As a result, solder joining is enabled at a low melting point, and a highly reliable solder joint layer having a substantially uniform metal structure can be formed.

Abstract: The communication system includes a first communication device, a second communication device, and a third communication device. The first communication device outputs a high frequency alternating current power, and a power receiving circuit of the second communication device receives the high frequency alternating current power via a second antenna. A power line is connected between the second antenna and the power receiving circuit. A first power line has a first semicircle portion and a second power line has a second semicircle portion. The first and second semicircle portions are combined together to provide a loop-shaped antenna. The third communication device receives the high frequency alternating current power output from the loop-shaped antenna. At least two of the first, second, or third communication devices transmit or receive communication signals using respective antennas. The first and second power lines are twisted with each other at a portion other than the loop-shaped antenna.

Abstract: An image reading apparatus includes a feeding mechanism that individually feeds documents, a conveying mechanism that conveys the document fed by the feeding mechanism so that the document passes a reading position, a reading unit that reads the document at the reading position, and a control unit that controls the feeding mechanism and the conveying mechanism. When the control unit causes the feeding mechanism and the conveying mechanism to feed and convey a plurality of documents at constant intervals, the control unit causes the feeding mechanism to stop feeding after a trailing edge of a preceding document passes the reading position.

Abstract: A communication device changes an applied voltage output from a voltage circuit, and allows a capacitance measuring device to measure the respective capacitance values of a variable capacitance element before and after a change in the applied voltage. The communication device calculates a voltage correction value for correcting an initial variation of the capacitance value of the variable capacitance element using the respective capacitance values of the variable capacitance element before and after the change in the applied voltage, and respective applied voltage values before and after the change, and a correction voltage for canceling the initial variation in the capacitance value of the variable capacitance element, and outputs the correction voltage from the voltage circuit.

Abstract: A data processing rack unit including: a rack; a data processing device; a cable; a coupling member that is connected to a water pipe that is formed at a column positioned on the one side out of a plurality of columns and through which cooling water flows, and that extends toward one side; a cooling water pipe that is provided at the data processing device and cools an internal portion of the data processing device; and a coupled-to member that is provided at a location on the one side of the data processing device, that is connected to the cooling water pipe, that extends toward the opposite side from the one side, and that is coupled to the coupling member accompanying insertion of the data processing device into the rack.

Abstract: A triplate line inter-layer connector and a planar array antenna are provided. The triplate line inter-layer connector has an electrical connection structure between a first triplate line and a second triplate line, a first patch pattern formed at a connection-side terminal end of a first feeder line, a first feed substrate having a first shield spacer disposed therebeneath, and a second shield spacer disposed thereabove. Each of the first and second shield spacers has a hollow portion hollowed out to a size encompassing the first feeder line and the first patch pattern so as to define a corresponding one of first and second dielectrics. A second feeder line is provided on a second feed substrate together with a second patch pattern, and a second ground conductor has a first slit formed in a portion thereof located approximately intermediate between the first and second patch patterns.

Abstract: A planar antenna module according to one preferred embodiment of the present invention comprises an antenna portion (101), a feeder portion (102), and a connection plate (18). The antenna portion (101) includes a first ground plate (11) having a first slot (21), a second ground plate (12) having dielectrics, an antenna substrate having a radiation element (41), a third ground plate (13) having dielectrics, a fourth ground plate (14). The feeder portion (102) includes the fourth ground plate (14), a fifth ground plate (15), a feed substrate (50), a sixth ground plate (16), a seventh ground plate (17). The connection plate (18) has a second waveguide opening portion (64).

Abstract: A ground conductor (1) has a through hole provided through an area thereof for connection with a waveguide (6), with dimensions substantially equal to cavity dimensions of the waveguide (6), and a metallic spacer (7a) is provided as a holding element for a film substrate (4), with an even thickness to a dielectric substrate (2a), the metallic spacer (7a) having dimensions E1 and E2 of cavity walls thereof changed in accordance with a desirable frequency, and cooperating with another metallic spacer (7b) having substantially equal dimensions to the metallic spacer (7a), to sandwich the film substrate (4) in between, and in addition, an upper ground conductor (5) is arranged on the other metallic spacer (7b), and a quadrate resonant patch pattern (8) is formed at an end of the strip line conductor (3) formed to the film subs ate (4), on an area corresponding to a transducer end of the waveguide (6), while a combination of the quadrate resonant patch pattern (8) and the waveguide (6) is arranged such that the qu

Abstract: In a filter circuit, first and second coils are connected to first and second communication lines, respectively. At a secondary side of the first and second coils, first and second capacitors are connected in series between the first and second communication lines. At a primary side of the first and second coils, third and fourth capacitors are connected in series between the first and second communication lines. A connection node between the first and second capacitors is grounded. A connection node between the third and fourth capacitors is grounded. The first and second coils are adjacently arranged in order to have a reversed polarity to each other. The filter circuit having the above structure works as a n-type filter capable of eliminate both common mode noise and normal mode noise. The filter circuit can eliminate noise caused by the first and second coils.

Abstract: An underrun protector mounting structure includes: a chassis frame; a front underrun protector which is disposed at the front or rear of the chassis frame and extended in a lateral direction of the vehicle; a bracket 6 for fixing the front underrun protector to the chassis frame; and a support part interposed between the front underrun protector and the bracket. The support part has a first plate part disposed on the front underrun protector side and a second plate part disposed on the first plate part on the bracket 6 side. The first plate part is formed to be wider in the lateral direction of the vehicle than the second plate part 32. The first and second plate parts are stacked to form a leaf spring shape in a longitudinal direction of the vehicle.

Abstract: An underrun protector mounting structure 3 includes: a chassis frame 4; a front underrun protector 5 which is disposed at the front or rear of the chassis frame 4 and extended in a lateral direction of the vehicle; a bracket 6 for fixing the front underrun protector 5 to the chassis frame 4; and a support part 7 interposed between the front underrun protector 5 and the bracket 6. The support part 7 has ribs 46 projected toward the bracket 6 and extended along the lateral direction of the vehicle. The bracket 6 has a plurality of rib receiving parts 30 which are formed approximately parallel to each other in a vertical direction of the vehicle with a space therebetween and which fit to the ribs 46. A mounting height of the support part 7 relative to the bracket 6 is set by selecting and fitting one of the plurality of rib receiving parts 30.

Abstract: Provided is a triplate line inter-layer connector having excellent loss suppression capability and allowing for inter-layer connection at any position, and a planar array antenna having uniform frequency characteristics in a beam direction. The triplate line inter-layer connector has an electrical connection structure between a first triplate line and a second triplate line. A first patch pattern is formed at a connection-side terminal end of a first feeder line. A first feed substrate has a first shield spacer disposed therebeneath, and a second shield spacer disposed just thereabove. Each of the first and second shield spacers has a hollow portion hollowed out to a size encompassing the first feeder line and the first patch pattern so as to define a corresponding one of first and second dielectrics in a respective one of the positions beneath and just above the first feed substrate.

Abstract: In a wheel identifying apparatus, first and second devices respectively transmit first and second trigger signals. The first device is mounted on the body of a vehicle closer to the front axle than the rear axle and closer to one of the front wheels than the other; it has the same height as the front axle and an orientation angle in a range of 0 to 90°. The second device is mounted on the vehicle body closer to the rear axle than the front axle and closer to one of the rear wheels than the other; it has the same height as the rear axle and an orientation angle in a range of 0 to 90°. Consequently, the first trigger signal can be reliably received by transceivers on the front wheels, and the second trigger signal can be reliably received by transceivers on the rear wheels.