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179results about How to "Easily affected" patented technology

Contactless power receiver, contactless power feeder, and contactless power transmission system provided with same

Contactless power receiver 1a includes power reception unit having a contactless power reception function using electromagnetic induction; communication unit separately transmitting a plurality of data items in the vicinity of a zero cross point of an alternating current voltage from commercial power supply; and power reception side message division unit dividing a transmission message into a plurality of data items. Contactless power feeder includes power feeding unit having a contactless power feeding function using electromagnetic induction; communication unit separately receiving a plurality of data items in the vicinity of a zero cross point of an alternating current voltage from commercial power supply; and power feeding side message combination unit generating a reception message by combining a plurality of data items. Each of the plurality of data items which are divided by power reception side message division unit and are combined by power feeding side message combination unit has a size transmittable in the vicinity of the zero cross point. According to this configuration, it is possible to accurately perform communication having a large amount of information without being affected by a noise due to contactless power transmission.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Display device, a driving method of a display device, and a semiconductor integrated circuit incorporated in a display device

A display device in which a current supplied to a light emitting element is corrected depending on a degradation level of the light emitting element and display variations due to the degradation of each light emitting element are suppressed. Further, according to the display device of the invention, the effect of variations in TFTs is reduced and writing time of a signal is shortened. To achieve the aforementioned display device, according to the invention, a current value supplied to a light emitting element is corrected in accordance with the degradation thereof instead of correcting a video signal. Further, the display device comprises at least a supply source for supplying a corrected current depending on the degradation of a light emitting element and a current source for supplying the corrected current from the supply source to the light emitting element. Moreover, according to such a display device, a first current source of the supply source supplies a corrected current corresponding to the degradation of the least degraded light emitting element of the light emitting elements connected to the same signal line, meanwhile a second current source supplies a corrected current corresponding to the degradation of the most degraded light emitting element of the light emitting elements connected to the same signal line.
Owner:SEMICON ENERGY LAB CO LTD

Low floor vehicle

A low floor vehicle reduces, when the vehicle enters a curved track, the lateral force of the vehicle, prevents occurrence of vibration and creaking sounds of the vehicle, improves riding quality of passengers, and reduces wear of wheel flanges. A low floor vehicle includes a bogie frame 9 of a bogie 7, a pair of bogie frame cross beams 9a arranged along a vehicle lateral direction in the middle of a vehicle longitudinal direction of the bogie frame 9 and arranged spaced apart from each other in the vehicle longitudinal direction, and a pair of wheels 8 provided in each of a vehicle front edge direction and a vehicle rear edge direction with respect to the pair of bogie frame cross beams 9a of the bogie frame 9 and configured to travel on a track 1. A pair of flexible traction rods 15 arranged along the vehicle longitudinal direction and configured to be capable of extending and retracting in the vehicle longitudinal direction are provided in the bogie 7, the pair of flexible traction rods 15 are arranged spaced apart from each other in a vehicle lateral direction, one ends 15b of the flexible traction rods 15 are attached to the bogie frame cross beams 9a, and the other ends 15c of the flexible traction rods 15 are attached to a receiving section 6c of in the vehicle body 6, and the bogie 7 is configured to be capable of turning with respect to the vehicle body 6.
Owner:MITSUBISHI HEAVY IND LTD

High efficiency single stage bidirectional converter

The present invention focuses on the development of a high-efficiency single-stage bidirectional converter with multi-input power sources. In the present invention, it takes a three-winding coupled inductor as the main component of energy transmission, and utilizes only two power semiconductor switches to accomplish the multi-input function. According to the designed switching conditions, this circuit could be operated at discharge, charge and standalone states to simplify conventional structure in which multiple converters are used in boosting voltage and then connected in parallel to supply power. Moreover, the coupled inductor as the principal part of this circuit has high-voltage gain property, and the present invention fully utilizes the winding voltage in the high-voltage side to further increase the corresponding voltage gain superior to that in the conventional coupled-inductor strategy. This property is helpful to solve the power conversion problem caused by clean energies with inherent low-voltage characteristics. In addition, all switches and diodes have favorable voltage-clamped effects so that the voltage spikes induced by the leakage-induction energy can be alleviated effectively, and there are no high reverse-recovery currents within diodes because the leakage induction can restrain instantaneous changes in the current. Furthermore, the present invention has a charging route of low-voltage conversion without adding additional components, avoiding the power losses induced by the multistage conversion in the traditional auxiliary power systems, and utilizes the synchronous rectification technique to decrease the conducting losses.
Owner:YUAN ZE UNIV
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