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    • 1. 发明申请
    • METHOD AND DEVICE FOR REPRESENTING AN OBJECT BY MEANS OF AN IRRADIATION, AND FOR RECONSTRUCTING SAID OBJECT
    • 使用模拟BY辐射数据的物体通过辐射和重建生产资料PRESENTATION
    • WO0231767A3
    • 2002-07-25
    • PCT/EP0111796
    • 2001-10-11
    • FRAUNHOFER GES FORSCHUNGHANKE RANDOLFSCHROEPFER STEFANGERHAEUSER HEINZPAULUS DIETRICH
    • HANKE RANDOLFSCHROEPFER STEFANGERHAEUSER HEINZPAULUS DIETRICH
    • G06T11/00
    • G06T11/005A61B6/5258
    • The invention is based on the fact that a representation of an object can be improved by means of an irradiation, in view of an ensuing reconstruction of the object based on the representation. In order to achieve this, simulated data corresponding to a simulated irradiation of the object is used, before a reconstruction, as prior information for measuring an irradiation of the object and/or for producing the representation from a measured irradiation. The invention relates to a method for representing an object (10) by means of an irradiation. Said method involves preparing simulated data corresponding to a simulated irradiation of the object (10), in a memory (20) for example; using the simulated data for measuring an irradiation of the object (10) by means of a control mechanism (24), in a CT scanner (12) for example, in order to obtain the irradiation of the object; and/or using the simulated data for producing the representation from a measured irradiation by means of a data preparation device (26).
    • 本发明是基于通过相对于所述对象的后续重建的照射的手段的对象的表示可以基于由对应于所述对象的模拟照射模拟数据的表示改进的实现,重构作为测量先验信息之前 对象和/或的照射被用于生成从由辐射测定的表示。 用于通过辐射通过的装置上显示的对象(10)根据本发明的方法包括:提供对应于所述对象(10)的模拟照射模拟数据,在例如一个存储器(20),并使用所模拟的数据,用于测量所述对象的照射 (10),诸如计算机断层摄影(12)以接收所述对象的照射,通过驱动器(24)和/或使用该模拟数据通过数据处理装置(26),以产生从测量照射所述表示。
    • 4. 发明申请
    • GROUND STATION FOR USE IN RADIO TRANSMISSION VIA SATELLITE AND METHOD FOR GENERATING A DATA STREAM THAT COMPRISES A MAIN PROGRAM AND AN ADDITIONAL PROGRAM
    • 地面站无线电传输通过卫星和方法用于生成数据流与主程序和附加程序
    • WO0156201A3
    • 2002-11-14
    • PCT/EP0100876
    • 2001-01-26
    • FRAUNHOFER GES FORSCHUNGPERTHOLD RAINERGERHAEUSER HEINZ
    • PERTHOLD RAINERGERHAEUSER HEINZ
    • H04B7/185H04H20/51H04H1/00H04J3/00
    • H04B7/18517H04H20/10H04H20/51H04H2201/19
    • The invention relates to a ground station (10) for generating a data stream (20) that comprises a main program and an additional program. Said ground station comprises a memory (12) that stores the additional program, which is for example a commercial, while the main program is a radio program produced in a sound studio. The ground station further comprises a multiplexer (14) with a first input (14a) for receiving the main program and a second input (14b) for receiving the additional program from the memory, and with an output. A control device (16) for controlling the multiplexer (14) switches, at a first interval, an output (14c) of the multiplexer (14) from the first input to the second input and at a second interval from the second input back to the first input, thereby inserting the additional program into the main program between the first interval and the second interval. The ground station further comprises a transmitter device (18) that is connected to the output of the multiplexer (14) on the input side and that is connected to a transmitting antenna (22) on the output side so as to provide the transmitting antenna with the data stream (20). The inventive method provides a simple means for inserting commercials into the data stream without requiring special devices in the sound studio. The ground station can easily detect at which intervals commercials were inserted. The commercials can be exchanged or updated via an optional remote maintenance device of the ground station with little effort.
    • 地面站(10),用于生成包括主节目的数据流(20)和一个附加程序,包括用于存储所述辅助程序,其是例如在商业的存储器(12),而主节目是在声音工作室广播节目产生的信号。 地面站还包括具有用于接收所述主程序以及用于从所述存储器和输出接收的补充方案(14B)的第二输入端的第一输入端(14a)的一个多路复用器(14)。 它进一步用于控制多路复用器(14)的控制装置(16)被提供,以使多路复用器的输出(图14C)(14)中的时刻的第一输入的第一时间连接到所述第二输入端和第二点 被切换到所述第二输入到第一输入键上的第一次和在主程序中的第二时间之间的附加程序。 地面站最后包括具有连接到多路转换器(14)的输出的输入侧的传输装置(18),并且其具有的输出连接到一个发送天线(22)提供的发送天线的数据流(20)。 在根据本发明的商业广告以简单的方式可以被键入到数据流中,而不需要特殊的设备,需要在录音棚。 地面站也能够容易地检测该被键入时的商业广告。 商业广告最终可替换或与地面站的可选的远程维护装置容易地更新。
    • 5. 发明申请
    • COARSE FREQUENCY SYNCHRONISATION IN MULTICARRIER SYSTEMS
    • 混合系统中的同步频率同步
    • WO9953666A8
    • 2000-08-10
    • PCT/EP9802170
    • 1998-04-14
    • FRAUNHOFER GES FORSCHUNGEBERLEIN ERNSTBADRI SABAHLIPP STEFANBUCHHOLZ STEPHANHEUBERGER ALBERTGERHAEUSER HEINZ
    • EBERLEIN ERNSTBADRI SABAHLIPP STEFANBUCHHOLZ STEPHANHEUBERGER ALBERTGERHAEUSER HEINZ
    • H04J11/00H04J1/00H04L27/00H04L27/26
    • H04L27/2613H04L27/2659H04L27/2675H04L2027/003
    • For performing a coarse frequency synchronization compensating for a carrier frequency deviation from an oscillator frequency in a demodulation system (130) capable of demodulating a signal having a frame structure, the frame structure comprising at least one useful symbol (162) and a reference symbol (166) which is an amplitude-modulated sequence, firstly the signal is received. Thereafter, the received signal is down-converted. Then, an amplitude-demodulation of the down-converted signal is performed in order to generate an envelope. This envelope is correlated with a predetermined reference pattern in order to determine the carrier frequency deviation. Finally, the oscillator frequency is controlled based on the carrier frequency deviation. The reference symbol may comprise two identical sequences (300). In this case, the envelope obtained by the amplitude-demodulation has two portions which are based on the identical sequences (300). One of the portions of the envelope is correlated with the other one of the portions in order to determine the carrier frequence deviation. The oscillator frequency is controlled based on the determined carrier frequency deviation.
    • 为了在能够解调具有帧结构的信号的解调系统(130)中执行补偿来自振荡器频率的载波频率偏差的粗频率同步,所述帧结构包括至少一个有用符号(162)和参考符号( 166),其是幅度调制序列,首先接收信号。 此后,接收到的信号被下变频。 然后,执行下变频信号的幅度解调,以便产生一个信封。 该包络与预定的参考模式相关,以便确定载波频率偏差。 最后,振荡器频率根据载波频率偏差进行控制。 参考符号可以包括两个相同的序列(300)。 在这种情况下,通过幅度解调获得的包络具有基于相同序列(300)的两个部分。 为了确定载波频率偏差,包络线的一部分与另一部分相关。 基于确定的载波频率偏差来控制振荡器频率。
    • 6. 发明申请
    • METHODS AND DEVICES FOR ENCODING AUDIO SIGNALS AND METHODS AND DEVICES FOR DECODING A BIT STREAM
    • 用于解码比特流的方法和设备,用于编码音频信号的方法和装置
    • WO9922451A3
    • 1999-07-29
    • PCT/EP9804200
    • 1998-07-07
    • FRAUNHOFER GES FORSCHUNGGRILL BERNHARDHERRE JUERGENTEICHMANN BODOBRANDENBURG KARLHEINZGERHAEUSER HEINZ
    • GRILL BERNHARDHERRE JUERGENTEICHMANN BODOBRANDENBURG KARLHEINZGERHAEUSER HEINZ
    • G10L19/02G10L19/00H03H17/00H03M7/30H04B1/66H04B14/04
    • H04B1/665H04B14/046
    • The invention makes it possible to combine a scaleable audio coder with TNS technology. According to the inventive method for encoding time signals (x1) sampled in a first sampling rate, second time signals (x2) with a sampling rate smaller than the first sampling rate are generated (12). The second time signals (x2) are then encoded (14) according to a first coding algorithm, and written into a bit stream (xAUS) (16). The encoded second time signals (x2c) are then decoded (14) again and are transformed (23, 24) into the frequency range, as are the first time signals. TNS prediction coefficients are then calculated (25) from a spectral representation of the first time signals (X1). The transformed output signal (X2cd) of the coder/decoder (14) with the first coding algorithm and the spectral representation (X1) of the first time signal are subjected to a prediction of the frequency (27) in order to obtain spectral residual values for both signals using the prediction coefficients calculated on the basis of the first time signals alone. These two signals are evaluated against each other (26, 28). The evaluated spectral residual values (Xb) are then encoded by means of a second coding algorithm in order to obtain coded evaluated spectral residual values (Xcb). These evaluated spectral residual values are written into the bit stream (xAUS) in addition to side information with the prediction coefficients.
    • 本发明允许与TNS技术可扩展的Audiocodieres的组合。 在用于在第一采样时间的信号(X1)取样编码的方法是第一第二时间信号(×2)产生(12),其采样速率为小于所述第一采样率。 现在,在根据第一编码算法的第二次信号(×2)进行编码(14),并在比特流(XOFF)写入(16)。 编码的第二时间信号(X2C),但是,再次解码(14)和就像变换到频率范围(23,24)在第一时间信号。 从第一时间信号(X1)的频谱表示是计算(25)TNS预测系数。 所述变换后的输出信号(X2CD)编码器/解码器Dieres(14)与所述第一编码算法,如进行的预测在频率的第一时间信号的频谱表示(X1)(27)以获得两个信号,频谱残余值的其中仅 由于用于计算预测系数的第一次信号。 这两个信号相对于彼此(26,28)进行评价。 所评估的残余频谱值(XB)至由第二编码算法(30),以获得编码的评价的残余频谱值(XCB)具有所计算的预测系数的相邻页的信息,也是在比特流(XOFF)写入随后进行编码。
    • 8. 发明申请
    • METHOD AND DEVICE FOR DETECTING A TRANSIENT IN A DISCRETE-TIME AUDIOSIGNAL
    • 方法和装置用于记录攻击在时间离散音频信号
    • WO9910886A3
    • 1999-06-10
    • PCT/EP9803603
    • 1998-06-15
    • FRAUNHOFER GES FORSCHUNGHILPERT JOHANNESHERRE JUERGENGRILL BERNHARDBUCHTA RAINERBRANDENBURG KARLHEINZGERHAEUSER HEINZ
    • HILPERT JOHANNESHERRE JUERGENGRILL BERNHARDBUCHTA RAINERBRANDENBURG KARLHEINZGERHAEUSER HEINZ
    • H04B1/66
    • H04B1/665
    • The invention relates to a method for detecting a transient in a discrete-time audiosignal (x(k)) which is carried out entirely in the time domain. Said method comprises a step in which the discrete-time audiosignal is segmented so as generate consecutive segments of identical length with unfiltered discrete-time audiosignals (xs(T), xs(T-1), xs(T-2), ...), after which the discrete-time audiosignal (xs(T)) in a current segment is filtered. Thereafter there are two options: either the energy (Ef(T)) of the filtered discrete-time audiosignal (Ys(T)) in the current segment can be compared with the energy (Ef(T-1)) of the filtered discrete-time audiosignal (Ys(T-1)) in a preceding segment, or a current relationship can be generated between the energy (Ef(T)) of the filtered discrete-time audiosignal (Ys(T)) in the current segment and the energy (Eu(T)) of the unfiltered discrete-time audiosignal (Xs(T)) in the current segment and said current relationship compared with a corresponding preceding relationship. On the basis of the one comparison and/or the other comparison it is determined whether a transient is present in the discrete-time audiosignal.
    • 在离散时间检测音频信号中的止挡(X(k))的一种方法,在时域中完全进行,并且包括分割所述离散时间的音频信号以与未滤波的离散时间的音频信号(XS(T),XS相同长度的连续片段的步骤(T 生产1),XS(T-2)...)。 然后在当前段离散时间的音频信号(XS(T))进行过滤。 现在,无论是在与能量当前段的能量滤波的离散时间的音频信号的(EF(T))(YS(T))(EF(T-1))在经滤波的离散时间的音频信号(YS(T-1))的 先前片段进行比较时,或者它可以是在当前段中的能量滤波的离散时间的音频信号的(EF(T))(YS(T))和能量未滤波的离散时间的音频信号的(EU(T))(XS(之间的电流关系 T))形成在当前段和该电流关系与前面的对应关系进行比较。 上的比较和/或其它比较的基础上它检测到停止是否存在于离散时间的音频信号。