Abstract: For determining time and frequency resources, a first device performs: obtaining groups of time and frequency resources of the wireless communications network so as to form a redrawn grid; allocating time and frequency resources according to the redrawn grid and to a frequency hopping criteria; and providing signalling information representative of the time and frequency resources that have been allocated according to the redrawn grid. In order to determine which time and frequency resources of the initial grid to be used for performing said transmissions, a second device performs: obtaining the signalling information so as to determine the time and frequency resources that have been allocated according to the redrawn grid; and applying a predetermined pattern mask onto the determined time and frequency resources that have been allocated according to the redrawn grid.

Abstract: A radio communication apparatus that performs radio communication according to a multicarrier scheme includes: a transmitting unit including a null inserting unit that dispersedly arranges null symbols in a two-dimensional space of time and frequency in radio data, and a differential modulating unit that performs differential modulation on a data symbol part other than the null symbols; and a receiving unit including an interference measuring unit that measures interference power for a data symbol that is a measurement target by using a null symbol adjacent to the data symbol in the two-dimensional space of time and frequency, and a delay detecting unit that performs weighting on each data symbol according to the interference power measured for each data symbol and that performs delay detection between data symbols.

Abstract: A radio communication apparatus includes antennas, transceiver units respectively connected to the antennas, and a radio control unit that controls the transceiver units, simultaneously inputs same transmission data to the transceiver units, and instructs, every switching cycle of frequency hopping, the transceiver units to start check processing for an idle state of frequency channels. The transceiver units respectively include hopping control units that switch the frequency channels every fixed time in synchronization with a communication partner and control such that each of the transceiver units uses a different frequency at the same hour. When determining that a frequency channel is in an idle state before a predetermined time elapses from the start of the check processing for an idle state, the transceiver units transmit the transmission data to the communication partner using the frequency channel.

Abstract: A magnetoresistive random access memory includes a memory cell line in which memory cells are formed and write bit lines. The memory cell line 1 includes a magnetic recording layer, magnetization fixed layers, reference layers, spacer layers, and nMOS transistors. The spacer layer and the reference layer are located between the magnetization fixed layer and the magnetization fixed layer). The magnetization fixed layers have a magnetization fixed to a direction opposite to that of a magnetization of the magnetization fixed layers. The reference layers also have a fixed magnetization direction. The nMOS transistor is provided between the write bit line and the magnetization fixed layer.

Abstract: A radio communication apparatus includes antennas, transceiver units respectively connected to the antennas, and a radio control unit that controls the transceiver units, simultaneously inputs same transmission data to the transceiver units, and instructs, every switching cycle of frequency hopping, the transceiver units to start check processing for an idle state of frequency channels. The transceiver units respectively include hopping control units that switch the frequency channels every fixed time in synchronization with a communication partner and control such that each of the transceiver units uses a different frequency at the same hour. When determining that a frequency channel is in an idle state before a predetermined time elapses from the start of the check processing for an idle state, the transceiver units transmit the transmission data to the communication partner using the frequency channel.

Abstract: An audio conference device receives and emits sounds to perform transmission/reception of audio signals via communications. The device has a speaker array with a plurality of speakers arranged on the lower surface of an elongated main housing, and a microphone array with a plurality of microphones arranged on the side surface of the main housing along the longitudinal direction. Legs are attached to the main body to support the main housing at a prescribed height above the resting surface and to secure good sound emission characteristics of the speaker array. The device further controls directivity of the microphones.

Abstract: An audio conference device receives and emits sounds to perform transmission/reception of audio signals via communications. The device has a speaker array with a plurality of speakers arranged on the lower surface of an elongated main housing, and a microphone array with a plurality of microphones arranged on the side surface of the main housing along the longitudinal direction. Legs are attached to the main body to support the main housing at a prescribed height above the resting surface and to secure good sound emission characteristics of the speaker array. The device further controls directivity of the microphones.

Abstract: In an audio signal transmission/reception device that receives and emits sounds so as to perform transmission and reception of audio signals via communications, user operability can be improved and the size of a main unit can be reduced. It is equipped with a speaker array for arranging a plurality of speaker units, which are arranged on the lower surface of the main unit, and a microphone array for arranging a plurality of microphones, which are arranged on the side surface of the main unit in its longitudinal direction. Legs having hollow structures are attached to the main unit so as to support the main unit at a prescribed height above the mount surface (e.g., the surface of a desk) and to secure good sound emission characteristics of the speaker array.

Abstract: A magnetoresistive random access memory includes a memory cell line in which memory cells are formed and write bit lines. The memory cell line 1 includes a magnetic recording layer, magnetization fixed layers, reference layers, spacer layers, and nMOS transistors. The spacer layer and the reference layer are located between the magnetization fixed layer and the magnetization fixed layer). The magnetization fixed layers have a magnetization fixed to a direction opposite to that of a magnetization of the magnetization fixed layers. The reference layers also have a fixed magnetization direction. The nMOS transistor is provided between the write bit line and the magnetization fixed layer.

Abstract: An upper-side semiconductor chip is stacked on a lower-side semiconductor chip by connection through microbumps. In the lower-side semiconductor chip that forms a gap with the upper-side semiconductor chip to be filled with an underfill resin, and is sealed with a molding resin, a polyimide film is formed on the chip surface in a peripheral area excluding openings of bonding pads. A stacked semiconductor device and a method for manufacturing the stacked semiconductor device are provided that the device is capable of suppressing generation of a void in the underfill resin layer, prevents a decrease in measurement accuracy of the gap between the stacked semiconductor chips, and prevents peeling of the molding resin.

Abstract: A FIFO buffer circuit is provided which, in data transmission between two circuit areas having different combinations of a power supply voltage and an operation clock frequency, can perform voltage level and clock rate conversion at the same place and time. In an input side area are a plurality of data entry registers, a write entry management circuit and a full signal generating circuit. In an output side area are a read entry management circuit, an empty signal generating circuit and an output selector. On the boundary between the input and output sides are entry management flag circuits that manage the presence or absence of effective data in the respective data entries; and voltage level converting circuits that convert voltage levels of the outputs of the data entry registers to the voltage levels of the output side. In this way, the clock rate replacements and voltage level conversions are performed.

Abstract: In a knee protecting airbag device of the present invention, an airbag is folded and housed on the front side of the knees of a seated passenger. The airbag is protruded rearward of a vehicle from a protruding opening and expanded and inflated upward, when an inflating gas flows in. And, the airbag is arranged on the front side of the knees of the passenger between a member on the body side and the knees of the passenger thereby to protect the knees of the passenger. The protruding opening has a transverse width size set within a range of ? to ? of the transverse width size of the airbag having completed its expansion and inflation.

Abstract: A base 20 made of a steel plate is fasten to a case 10 made of ABS (acrylonitrilebutadiene-styrene) resin, while a pad 30 made of adhesive and elastic material such as urethane or olefin is fastened to the top surface of the base 20. To the reverse side of the surface of the pad 30 which is fastened to the base 20, i.e., to the side which is hit with sticks there is applied zinc oxide starch powder 40. A drumhead configured as described above can maintain flexibility but does not reduce repulsion between the sticks and drumhead.

Abstract: A FIFO buffer circuit is provided which, in data transmission between two circuit areas having different combinations of a power supply voltage and an operation clock frequency, can perform a voltage level conversion and a clock rate conversion at the same place at the same time. In an input side area 1, there are disposed a plurality of data entry registers 11a-11d, a write entry management circuit 10 and a full signal generating circuit 14, while in an output side area 2, there are disposed a read entry management circuit 13, an empty signal generating circuit 15 and an output selector 16. On the boundary between the input and output side areas 1 and 2, there are disposed entry management flag circuits 12a-12d that manage the presence or absence of effective data in the respective data entries; and voltage level converting circuits 17a-17d that convert the voltage levels of the outputs of the data entry registers 11a-11d to the voltage levels of the output side.

Abstract: In a knee protecting airbag device of the present invention, an airbag is folded and housed on the front side of the knees of a seated passenger. The airbag is protruded rearward of a vehicle from a protruding opening and expanded and inflated upward, when an inflating gas flows in. And, the airbag is arranged on the front side of the knees of the passenger between a member on the body side and the knees of the passenger thereby to protect the knees of the passenger. The protruding opening has a transverse width size set within a range of ? to ? of the transverse width size of the airbag having completed its expansion and inflation.

Abstract: In an audio signal transmission/reception device that receives and emits sounds so as to perform transmission and reception of audio signals via communications, user operability can be improved and the size of a main unit can be reduced. It is equipped with a speaker array for arranging a plurality of speaker units, which are arranged on the lower surface of the main unit, and a microphone array for arranging a plurality of microphones, which are arranged on the side surface of the main unit in its longitudinal direction. Legs having hollow structures are attached to the main unit so as to support the main unit at a prescribed height above the mount surface (e.g., the surface of a desk) and to secure good sound emission characteristics of the speaker array.

Abstract: In a knee protecting airbag device of the present invention, an airbag is folded and housed on the front side of the knees of a seated passenger. The airbag is protruded rearward of a vehicle from a protruding opening and expanded and inflated upward, when an inflating gas flows in. And, the airbag is arranged on the front side of the knees of the passenger between a member on the body side and the knees of the passenger thereby to protect the knees of the passenger. The protruding opening has a transverse width size set within a range of ? to ? of the transverse width size of the airbag having completed its expansion and inflation.

Abstract: A semiconductor device has a semiconductor substrate, an insulating layer formed on the semiconductor substrate, a wiring formed in the insulating layer and an antifuse including first and second connecting portions coupled to the wiring. The anti fuse has a space provided between the first connecting portion and the second connecting portion and insulating the first connecting portion from the second connecting portion. The first connecting portion and the second connecting portion may be coupled by a conductive material disposed in the space.

Abstract: A semiconductor device includes at least one semiconductor chip formed on a wafer and a scribeline provided along an outer circumference of the semiconductor chip. The semiconductor device further includes a chipping prevention wall provided close to a blade area in the scribeline to prevent chipping from advancing when the wafer is diced along the blade area.

Abstract: If a signal-to-noise ratio determining unit determines that a ratio of a signal level to a noise level exceeds a threshold, and also if a preamble determining unit determines that logical data matches preamble data, a communication apparatus starts receiving a communication frame. In other words, the communication apparatus starts receiving the communication frame only after confirming existence of a carrier.