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    • 1. 发明公开
    • DOWNLINK AND UPLINK COMPRESSION METHOD AND DEVICE USING NON-STANDARD BANDWIDTH OF LTE SYSTEM
    • 使用LTE系统的非标准带宽的下行链路和上行链路压缩方法和设备
    • EP3288303A1
    • 2018-02-28
    • EP15892101.5
    • 2015-05-15
    • Huawei Technologies Co., Ltd.
    • YE, Jiyu
    • H04W16/00
    • H04W28/06H04B1/66H04L5/0098H04L27/2601H04L69/04H04W16/00H04W16/14H04W72/0413H04W72/042
    • Embodiments of the present invention provide a method and an apparatus for downlink and uplink compression of a nonstandard bandwidth of an LTE system. A base station filters a baseband signal by using a filter whose bandwidth is a nonstandard bandwidth of LTE, and filters out a signal outside the nonstandard bandwidth of LTE; and the base station may send a signal to a terminal by using the nonstandard bandwidth of LTE that can be provided by an operator. For example, the operator can provide only an LTE nonstandard bandwidth of 3M that falls within 1-4M, and a standard bandwidth of the LTE is 5M, and therefore, the filter needs to filter out signals within bandwidths 0-1M and 4-5M. During final sending, the base station uses the LTE nonstandard bandwidth of 3M; during receiving, the terminal uses the LTE standard bandwidth of 5M for receiving; and the base station has no signal within bandwidths 0-1M and 4-5M. The base station also needs to send the nonstandard bandwidth of the LTE system to the terminal, so that the terminal sends data to the base station according to the nonstandard bandwidth of the LTE system.
    • 本发明实施例提供了一种LTE系统非标准带宽的下行和上行压缩方法及装置。 基站通过使用带宽为LTE的非标准带宽的滤波器对基带信号进行滤波,滤除LTE非标准带宽之外的信号; 基站可以通过运营商可以提供的LTE的非标准带宽向终端发送信号。 例如,运营商只能提供3M的LTE非标准带宽在1-4M之内,LTE的标准带宽为5M,因此,过滤器需要过滤掉0-1M和4-5M带宽内的信号 。 在最终发送期间,基站使用3M的LTE非标准带宽; 终端在接收时使用5M的LTE标准带宽接收; 并且基站在0-1M和4-5M的带宽内没有信号。 基站还需要将LTE系统的非标准带宽发送给终端,以便终端根据LTE系统的非标准带宽向基站发送数据。
    • 3. 发明授权
    • SENDER UND EMPFÄNGER FÜR EIN DRAHTLOSES AUDIO-ÜBERTRAGUNGSSYSTEM
    • 发送器和接收无线音频传输系统
    • EP1813026B1
    • 2012-06-13
    • EP05807495.6
    • 2005-10-27
    • Sennheiser electronic GmbH & Co. KG
    • MEYER, RolfPEISSIG, JürgenBUHE, Gerrit
    • H04B1/64H03G7/00H04B1/66H04B1/04
    • H04B1/04H04B1/66
    • A transmitter for a wireless audio transmission system has at least one analogue/digital conversion unit for the analogue/digital conversion of the analogue audio signals to be transmitted, at least one digital signal processing unit with compressing/encoding means for compressing and encoding the digitised signals to be transmitted, a digital/analogue conversion unit for the digital/analogue conversion of the digital output signals from the digital signal processing unit into analogue signals, and a transmission unit for wirelessly transmitting the output signals from the analogue/digital conversion unit. Also disclosed is a receiver for a wireless audio transmission system having a reception unit for receiving wirelessly transmitted analogue H.F. signals, an intermediate frequency unit for mixing the H.F. signals into intermediate frequency signals, at least one analogue/digital conversion unit for the analogue/digital conversion of the wirelessly received signals, at least one digital signal processing unit with expanding/decoding means for expanding and decoding the signals digitised by the at least one analogue/digital conversion unit, and at least one digital/analogue conversion unit for converting the digital output signals from the digital signal processing unit into analogue signals.
    • 4. 发明授权
    • Audio signal processing apparatus
    • 用于音频信号处理的设备
    • EP1737138B1
    • 2012-04-04
    • EP06021572.0
    • 1999-09-27
    • VICTOR COMPANY OF JAPAN, LTD.
    • Fuchigami, Norihiko, c/o Victor Company of Japan, Ltd.Ueno, ShojiTanaka, Yoshiaki
    • H04B1/66H04B14/06
    • G10L19/008G10L19/04H04B1/66H04S1/007
    • In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals.