Abstract: A wireless communication system in which wireless stations perform transmission, a plurality of wireless modules that are operated in a shared frequency band being installed in the wireless stations, wherein the wireless stations each include means for notifying a control device of environment information that includes capacity information regarding the wireless station and information regarding a surrounding wireless environment, and setting frequency channels in the plurality of wireless modules, the wireless stations being notified of the frequency channels by the control device, and the control device includes means for calculating a frequency channel of each wireless module of each wireless station based on the environment information collected from each wireless station, following a control guideline that is determined in advance, and notifying the wireless stations of the frequency channels.

Abstract: A measurement station collects radio base station performance information related to a radio communication performance of each radio base station, radio connection information related to a radio communication performance and a communication status of a corresponding radio terminal station, generates a measurement condition and an expected measurement result based on the radio base station performance information and the radio connection information, and notifies a measurement control signal corresponding to the measurement condition to the radio terminal station through the radio base station; the radio terminal station performs a communication setting of an own station based on the notified measurement control signal, and notifies a measurement preparation status to the measurement station; and the measurement station measures the radio communication performance by causing a flow of a measurement traffic to the radio terminal station through the radio base station, acquiring a measurement result, and determi

Abstract: A wireless communication characteristics evaluation method for evaluating wireless communication characteristics of a wireless communication system where a plurality of wireless communication terminals perform communication by transmitting or exchanging signals, the wireless communication characteristics evaluation method including: a step 1 of acquiring power and a band of an interference signal; a step 2 of calculating an interference band rate showing a rate of the band of the interference signal that overlaps with a band of a desired signal; a step 3 of calculating an interference power rate from interference power and the interference band rate and furthermore, calculating steady noise power from the interference power and the interference power rate; a step 4 of determining a real SINR from received power of the desired signal and the steady noise power; and a step 5 of determining wireless communication characteristics of the desired signal from the real SINR.

Abstract: The invention of the present application provides a transmission parameter control method in a radio communication system that performs, between a radio base station and a plurality of radio terminal stations, communication of a first method in which reception confirmation is enabled and communication of a second method in which reception confirmation is not possible. The radio base station selects transmission parameters including a transmission rate in the communication of the second method with the radio terminal stations, based on radio communication information in the communication of the first method with the radio terminal stations.

Abstract: A wireless communications method for connecting a base station with each of a plurality of terminal stations, the base station being equipped with a plurality of wireless communications units configured to be able to select a plurality of different transmission rates and connectable with one or more of the terminal stations, includes: a collection step of collecting information about a transmission rate and multicast transmission frequency from each of the terminal stations; a policy calculation step of calculating a setting policy for setting a unicast transmission rate and a multicast transmission rate for each of the wireless communications units and a switching policy for setting a condition for switching that one of the wireless communications units which is to be connected, for each of the terminal stations based on the collected information; and a setting step of setting those of the terminal stations which are to be connected, for each of the wireless communications units based on the calculated setti

Abstract: To enable correction or adjustment of a curtain travel curve in a case of driving an opening and closing blade by a power source in which a motor mechanism and a spring mechanism are combined. Provided are the motor mechanism that generates a traveling torque of the opening and closing blade of a mechanical shutter provided in an incident light path to an imaging element by electric conduction to a coil, and the spring mechanism that generates the traveling torque of the opening and closing blade together with the motor mechanism. In this case, a control unit capable of individually controlling a time length from the start of the electric conduction to the coil to the start of traveling of the opening and closing blade, and a value of a current to be supplied to the coil is provided.

Abstract: Provided are a first magnetic drive unit including a first coil and a first magnet, and a second magnetic drive unit including a second coil and a second magnet. Also provided are a first drive lever and a second drive lever operated by the first magnetic drive unit and the second magnetic drive unit, respectively, a first opening and closing blade and a second opening and closing blade that open and close an opening by an operation of the first drive lever and the second drive lever, respectively. A first lock mechanism locks the first drive lever at a predetermined position, and a second lock mechanism that locks the second drive lever at a predetermined position, and a part of the first lock mechanism and a part of the second lock mechanism are located between the first magnetic drive unit and the second magnetic drive unit.

Abstract: To secure a favorable photographing state without causing an increase of power consumption. A blade opening/closing apparatus includes a magnetic driving portion including a coil to which a driving current is supplied and a magnet that is rotated along with energization to the coil; a driving body that includes a to-be-locked portion and is operated by the magnetic driving portion; an opening/closing blade that opens/closes an aperture by an operation of the driving body; and a lock portion that sets a locked state of the opening/closing blade by engaging with the to-be-locked portion, the setting of the locked state and a release of the locked state being carried out in accordance with a rotation position of the magnet.

Abstract: An effect that drive of one of a first magnetic driving unit and a second magnetic driving unit prevents a movement of the other magnetic driving unit is not generated to appropriately control movements of first opening and closing blades and second opening and closing blades. A blade opening and closing device includes a base body which includes an opening for transmitting light, a first magnetic driving unit which includes a first magnet and a first coil, a second magnetic driving unit which includes a second magnet and a second coil, first opening and closing blades which are moved by the first magnetic driving unit relative to the base body and to open and close the opening, and second opening and closing blades which are moved by the second magnetic driving unit relative to the base body and to open and close the opening. A magnetic flux direction of the first magnetic driving unit is opposite to a magnetic flux direction of the second magnetic driving unit.

Abstract: To achieve downsizing while securing favorable functionality by a power assist spring. Provided are a blade opening and closing device including a magnetic drive unit including a coil to which a drive current is supplied and a magnet rotated with electric conduction to the coil, a drive lever configured to be operated by the magnetic drive unit, an opening and closing blade configured to open and close an opening by an operation of the drive lever, and a power assist spring configured to provide at least the drive lever with an energizing force in an operation direction of the drive lever, in which the power assist spring is located at an opposite side of the drive lever across the magnet.

Abstract: To decrease the influence of a magnetic flux generated in one magnetic drive unit on the other magnetic drive unit while securing downsizing.

Abstract: To enable correction or adjustment of a curtain travel curve in a case of driving an opening and closing blade by a power source in which a motor mechanism and a spring mechanism are combined. Provided are the motor mechanism that generates a traveling torque of the opening and closing blade of a mechanical shutter provided in an incident light path to an imaging element by electric conduction to a coil, and the spring mechanism that generates the traveling torque of the opening and closing blade together with the motor mechanism. In this case, a control unit capable of individually controlling a time length from the start of the electric conduction to the coil to the start of traveling of the opening and closing blade, and a value of a current to be supplied to the coil is provided.

Abstract: A mobile advertising holder is provided in the form of bag convenient for carrying where a LED tape light is stored. A mobile advertisement holder has an advertisement bag with a strap, and a LED interior illumination device. An advertisement display unit displays an advertisement image is installed in front of the advertisement bag. The LED interior illumination device includes a set box; a plurality of LED tape lights; a mobile battery; and a USB cable. The LED interior illumination device is stored in the advertisement bag so that the plurality of LED tape lights illuminate the advertisement image of the advertisement display unit to display the advertisement image in a novel and eye-catching manner.

Abstract: To secure a favorable photographing state without causing an increase of power consumption. A blade opening/closing apparatus includes a magnetic driving portion including a coil to which a driving current is supplied and a magnet that is rotated along with energization to the coil; a driving body that includes a to-be-locked portion and is operated by the magnetic driving portion; an opening/closing blade that opens/closes an aperture by an operation of the driving body; and a lock portion that sets a locked state of the opening/closing blade by engaging with the to-be-locked portion, the setting of the locked state and a release of the locked state being carried out in accordance with a rotation position of the magnet.

Abstract: An effect that drive of one of a first magnetic driving unit and a second magnetic driving unit prevents a movement of the other magnetic driving unit is not generated to appropriately control movements of first opening and closing blades and second opening and closing blades. A blade opening and closing device includes a base body which includes an opening for transmitting light, a first magnetic driving unit which includes a first magnet and a first coil, a second magnetic driving unit which includes a second magnet and a second coil, first opening and closing blades which are moved by the first magnetic driving unit relative to the base body and to open and close the opening, and second opening and closing blades which are moved by the second magnetic driving unit relative to the base body and to open and close the opening. A magnetic flux direction of the first magnetic driving unit is opposite to a magnetic flux direction of the second magnetic driving unit.

Abstract: A casting die assembly which does not produce any burrs includes a stationary die and a movable die that are clamped in a condition in which a slide core is caused to move toward a center of a movable die, and a back surface of a protrusion of the slide core contacts a stopper section provided on a frame section. The stopper section is subjected to the pressure applied to the slide core during a casting operation. Since the stopper section is provided on part of the frame section, which is integrally formed on the periphery of the stationary die, the stopper section is not caused to retreat or deform by the casting pressure and as a result, the slide core is not moved and burrs are not produced.

Abstract: A casting die assembly which does not produce any burrs includes a stationary die and a movable die that are clamped in a condition in which a slide core is caused to move toward a center of a movable die, and a back surface of a protrusion of the slide core contacts a stopper section provided on a frame section. The stopper section is subjected to the pressure applied to the slide core during a casting operation. Since the stopper section is provided on part of the frame section, which is integrally formed on the periphery of the stationary die, the stopper section is not caused to retreat or deform by the casting pressure and as a result, the slide core is not moved and burrs are not produced.

Abstract: Disclosed is an imaging apparatus that includes a table rotating device rotationally drives a disc-shaped recording medium; a pickup device capable of recording an information signal of an image corresponding to light from a subject; and an external case having a disc enclosure portion and the pickup device. The imaging apparatus further includes a disc cover rotatably attached to the external case; and a cover opening/closing mechanism capable of locking and unlocking the disc cover. In the imaging apparatus, the cover opening/closing mechanism includes a fixed claw integrally provided with the disc cover and a locking claw rotatably supported on one of the external case and a case-side member fixed to the external case, the fixed claw protruding in a direction substantially perpendicular to a main surface of the disc cover, and a convex portion protruding toward the disc cover provided at a front end of the fixed claw.

Abstract: A moving apparatus with a driving force assist mechanism traveled mainly by human power. This moving apparatus detects, in a non-contact manner, with respect to rotating portion such as traveling wheel, etc., rotation speed of the rotating portion to detect traveling state to deliver, from the driving force assist mechanism, assistant driving force corresponding to speed change information that a person who operates the moving apparatus intends to give on the basis of the detected traveling information to carry out traveling to thereby permit smooth traveling even in the case where traveling by only human power becomes difficult.

Abstract: A cleaned pulling room installed with a plurality of single crystal pulling apparatuses, having a plurality of operation floors and supplied with clean air as a down flow from a ceiling or an upper position neighboring the ceiling, wherein at least three operation floors are provided depending on degrees of cleanness required for operations performed on each of the floors. Thus, there is provided a pulling room that can separate dusting operations such as operations of dismantlement and cleaning of the furnace body and structural members in the furnace body and operations requiring highly clean environment such as charging of raw material into the furnace body as preparation for starting running of the pulling apparatuses, and can secure safety of the operations even when the pulling apparatuses become larger.