Abstract:
A prism sheet, a back light unit using the prism sheet, and a transmissive liquid crystal display device. The prism sheet (10) converts the propagation direction of the light (L)incident with the intensity distribution of a predetermined angular range by means of reflection. A reflecting surface which is extended from a base part (12) to a top part (18a) of the sheet and performs total reflection of the light (L) comprises a higher-order surface (18) including at least a surface of small curvature and a surface separate from the surface of small curvature.
Abstract:
Problem To restore data in a transmitted symbol sequence without aligning the clock of the receiver with the clock of the transmitter. Solution Received data oversampled twice is polyphased by the receiver, feedback is applied using an adaptive algorithm, and the filter coefficients (tap coefficient sequence) of a compensation filter are simultaneously shifted when the data shifts. The sampling frequency and the phase offset can be compensated for on the fly using a filter combining a tapped filter whose initial value is a correlation value obtained from the preamble and header of a received signal, and a wavefront aligner. In this configuration, a resampling filter circuit, an equalization filter circuit and a decimation filter circuit are realized in a single compensation filter circuit, which is much smaller than the prior art circuits in terms of size.
Abstract:
The present invention restores data of a series of symbols transmitted into a receiver, without making the clock of the receiver match the clock of a transmitter. In this receiver, received data that was over-sampled by two times is made into polyphase, and the data is shifted and a filter coefficient (a series of tap coefficients) of a compensation filter is shifted at the same time, by applying a feedback of an adaptation algorithm. Sampling frequency and phase offset can be compensated on-the-fly, by making a received signal pass through a filter that is a combination of a tapped filter, which has a correlation value obtained from a preamble or a header of the received signal set as the initial value thereof, and a wavefront aligner (a wavefront matching-box). Such a configuration is equivalent to achieving a resampling filter circuit, an equivalent filter circuit, and a decimation filter circuit with just one compensation filter circuit, and is able to make dimensions of a circuit far smaller than those in prior art.
Abstract:
Es werden eine Energieübertragungseinheit, eine Energieempfangseinheit, ein Energieversorgungssystem und ein Energieversorgungsverfahren bereitgestellt, die Energie durch Aussenden elektromagnetischer Wellen zuführen können. Eine Energieübertragungseinheit (110) weist auf: eine Berechnungseinheit (122) zum Berechnen des Maximalwertes für die ausgesendete Ausgangsleistung elektromagnetischer Wellen, der Bestrahlungsnormen entspricht, auf der Grundlage einer Antwortverzögerungszeit, die durch die Datenaustauschverbindung zwischen der Energieübertragungseinheit (110) und der Energieempfangseinheit (150) gemessen wurde; eine Energieübertragungseinheit (128) zum Übertragen von Energie über eine Energieversorgungsverbindung mit der Energieempfangseinheit (150) mit einer Ausgangsleistung, die den Maximalwert nicht überschreitet; eine Unregelmäßigkeiten-Erkennungseinheit (126) zum Erkennen einer Unregelmäßigkeit bei der Energieversorgungsverbindung auf der Grundlage von Datenaustausch mit der Energieempfangseinheit (150) über die Datenaustauschverbindung; und eine Ausgangssteuereinheit (124) zum Begrenzen der Ausgangsleistung auf der Grundlage der Erkennung einer Unregelmäßigkeit bei der Energieversorgungsverbindung.
Abstract:
The present invention restores data of a series of symbols transmitted into a receiver, without making the clock of the receiver match the clock of a transmitter. In this receiver, received data that was over-sampled by two times is made into polyphase, and the data is shifted and a filter coefficient (a series of tap coefficients) of a compensation filter is shifted at the same time, by applying a feedback of an adaptation algorithm. Sampling frequency and phase offset can be compensated on-the-fly, by making a received signal pass through a filter that is a combination of a tapped filter, which has a correlation value obtained from a preamble or a header of the received signal set as the initial value thereof, and a wavefront aligner (a wavefront matching-box). Such a configuration is equivalent to achieving a resampling filter circuit, an equivalent filter circuit, and a decimation filter circuit with just one compensation filter circuit, and is able to make dimensions of a circuit far smaller than those in prior art.
Abstract:
Problem To restore data in a transmitted symbol sequence without aligning the clock of the receiver with the clock of the transmitter. Solution Received data oversampled twice is polyphased by the receiver, feedback is applied using an adaptive algorithm, and the filter coefficients (tap coefficient sequence) of a compensation filter are simultaneously shifted when the data shifts. The sampling frequency and the phase offset can be compensated for on the fly using a filter combining a tapped filter whose initial value is a correlation value obtained from the preamble and header of a received signal, and a wavefront aligner. In this configuration, a resampling filter circuit, an equalization filter circuit and a decimation filter circuit are realized in a single compensation filter circuit, which is much smaller than the prior art circuits in terms of size.
Abstract:
On-the-Fly Compensation of Sampling Frequency and Phase Offset in Receiver Performing Ultra-High-Speed Wireless CommunicationAbstractThe present invention restores data of a series of symbols transmitted into a receiver, without making the clock of the receiver match the clock of a transmitter. In this receiver, received data that was over-sampled by two times is made into polyphase, and the data is shifted and a filter coefficient (a series of tap coefficients) of a compensation filter is shifted at the same time, by applying a feedback of an adaptation algorithm. Sampling frequency and phase offset can be compensated on-the-fly, by making a received signal pass through a filter that is a combination of a tapped filter, which has a correlation value obtained from a preamble or a header of the received signal set as the initial value thereof, and a wavefront aligner (a wavefront matching-box). Such a configuration is equivalent to achieving a resampling filter circuit, an equivalent filter circuit, and a decimation filter circuit with just one compensation filter circuit, and is able to make dimensions of a circuit far smaller than those in prior art.Fig. 4
Abstract:
compensação on-the-fly de frequência de amostragem e deslocamento de fase no receptor realizando comunicação sem fio de velocidade ultra alta. problema: para restaurar dados de uma sequência de símbolos transmitida sem alinhar o relógio do receptor com o relógio do transmissor. solução: os dados recebidos sobre amostrados duas vezes são polifaseados pelo receptor, o feedback é aplicado usando um algoritmo adaptativo, e os coeficientes de filtro (sequência de coeficiente de tap) de um filtro de compensação são simultaneamente deslocados quando os dados deslocam-se. a frequência de amostragem e o deslocamento de fase podem ser compensados em tempo real usando um filtro combinando um filtro afunilado, cujo valor inicial é um valor de correlação obtido a partir do preâmbulo e do cabeçalho de um sinal recebido, e um alinhador de frente de onda. nesta configuração, um circuito de filtro de reamostragem, um circuito de filtro de equalização e um circuito de filtro de dizimação são realizados em um único circuito de filtro de compensação, o que é muito menor do que os circuitos da técnica anterior, em termos de tamanho.
Abstract:
Energieübertragungsvorrichtung (110), die durch Aussenden elektromagnetischer Wellen Energie zu einer Energieempfangsvorrichtung (150) übertragen kann, wobei die Energieübertragungsvorrichtung (110) aufweist:eine Berechnungseinheit (122) zum Berechnen eines Maximalwertes für eine ausgesendete Ausgangsleistung elektromagnetischer Wellen, der Bestrahlungsnormen entspricht, auf der Grundlage einer Antwortverzögerungszeit, die durch eine drahtlose Datenaustauschverbindung zwischen der Energieübertragungsvorrichtung (110) und der Energieempfangsvorrichtung (150) gemessen wurde, wobei die Berechnungseinheit (122) den Maximalwert für die ausgesendete Ausgangsleistung elektromagnetischer Wellen auf der Grundlage von Bedingungen berechnet, die verhindern, dass ein vorgegebener Bestrahlungswert überschritten wird, wenn elektromagnetische Wellen mit einem Maximalwert über einen Reaktionszeitraum hinweg ausgesendet werden, der mindestens die Antwortverzögerungszeit aufweist, wobei die ausgesendete Ausgangsleistung eine Richtungsabhängigkeit aufweist, wobei jede der Energieübertragungsvorrichtung (110) und der Energieempfangsvorrichtung (150) in der Lage sind, Daten über die drahtlose Datenaustauschverbindung zu übertragen;eine Energieübertragungseinheit (128) zum Übertragen von Energie über eine Energieversorgungsverbindung mit der Energieempfangsvorrichtung (150) mit einer Ausgangsleistung, die den Maximalwert nicht überschreitet;eine Unregelmäßigkeiten-Erkennungseinheit (126) zum Erkennen von Unregelmäßigkeiten bei der Energieversorgungsverbindung auf der Grundlage von Datenaustausch mit der Energieempfangsvorrichtung (150) über die drahtlose Datenaustauschverbindung; undeine Ausgangssteuereinheit (124) zum Begrenzen der Ausgangsleistung auf der Grundlage der Erkennung einer Unregelmäßigkeit bei der Energieversorgungsverbindung, wobei die Ausgangssteuereinheit (124) die ausgesendete Ausgangsleistung elektromagnetischer Wellen in der Energieversorgungsverbindung als Reaktion auf die Erkennung der Unregelmäßigkeit bei der Energieversorgungsverbindung stoppt.