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41.发明授权VERFAHREN ZUM ERFASSEN EINER AN EINER DIGITALEN INFORMATION AUSGEÜBTEN MANIPULATION 失效用于检测数字信息的方法施加MANIPULATION
公开(公告)号：EP0922347B1
公开(公告)日：2000-07-12
申请号：EP97953698.4
申请日：1997-11-25
发明人： ZELLER, Jürgen , GERHÄUSER, Heinz
IPC分类号： H04L9/32
CPC分类号： H04N7/18 , H04L9/3247 , H04L2209/60
摘要： In a process for sensing manipulations of digital information, the erroneous detection of a manipulation due to processing disturbances is avoided in that the information is subdivided into parts. An identification is derived from and attributed to each information part. After the information parts are processed together with their identifications, potentially manipulated information parts are determined on the basis of their identifications. This enables the information as a whole to be rated as manipulated information when at least two time- or space-correlated information parts are sensed as being potentially manipulated.
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42.发明授权
公开(公告)号：EP0885482B1
公开(公告)日：1999-08-04
申请号：EP97929198.6
申请日：1997-06-17
发明人： PERTHOLD, Rainer , GERHÄUSER, Heinz
IPC分类号： H03F1/32
CPC分类号： H03F1/3247 , H03F2200/102 , H03F2201/3233
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43.发明公开TRIGGERUNG EINES MESSVERFAHRENS ZUR QUALITÄTSBEURTEILUNG VON AUDIO- UND/ODER SPRACHSIGNALEN 失效触发测量程序音频和/或语音信号的质量评价
公开(公告)号：EP0891685A1
公开(公告)日：1999-01-20
申请号：EP97912209.0
申请日：1997-10-21
摘要： A process and device (24) for triggering a measurement process for evaluating the quality of audio and/or speech signals enable field measurements to be carried out to determine the quality of a digital transmission. During a first step, digital values of a reference signal underlying at least part of a test signal whose quality is to be evaluated are stored. Digital values of the test signals are also at least temporarily stored. The degree to which a section of the reference signal values coincides with the test signal values is determined to trigger the measurement process as soon as a predetermined degree of coincidence is exceeded, in order to compare a further section of the reference signal values to the test signal values in the relative position in time of the reference signal and test signal values at the moment when a predetermined degree of coincidence occurs.
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44.发明公开
公开(公告)号：EP0885482A1
公开(公告)日：1998-12-23
申请号：EP97929198.0
申请日：1997-06-17
发明人： PERTHOLD, Rainer , GERHÄUSER, Heinz
IPC分类号： H03F1
CPC分类号： H03F1/3247 , H03F2200/102 , H03F2201/3233
摘要： The invention relates to a circuit (10) for pre-distortion of a signal to be transmitted via a non-linear transmission path (18). Said circuit has an envelope detection circuit (24) for detecting the signal (v). A quantisation circuit (22) for forming quantised envelope values on the basis of the envelope detected is connected to the envelope detection circuit (24) and to a chart (16) for delivering complex pre-distortion coefficients which are related to the quantised envelope values and a pre-detected transmission function of the non-linear transmission path (18). An evaluation circuit (14) which is separated from the non-linear transmission path (18) and is meant to carry out complex evaluation, using the complex pre-distortion coefficients, of the signal to be transmitted via the non-linear transmission path (18) enables substantial compensation for the distortion introduced by the non-linear transmission path (18), according to the amount and phase.
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45.发明公开CODIERVERFAHREN ZUR EINBRINGUNG EINES NICHT HÖRBAREN DATENSIGNALS IN EIN AUDIOSIGNAL, DECODIERVERFAHREN, CODIERER UDN DECODIERER 失效编辑有关引入非声音信号DATA IN音频信号解码方法，CODER UDN解码器
公开(公告)号：EP0875107A1
公开(公告)日：1998-11-04
申请号：EP97902223.0
申请日：1997-01-24
发明人： HEUBERGER, Albert , GERHÄUSER, Heinz , PERTHOLD, Rainer , EBERLEIN, Ernst , PLANKENBÜHLER, Roland , SCHOTT, Hartmut , NEUBAUER, Christian
IPC分类号： H04H20
CPC分类号： H04H20/31
摘要： In a coding process and a coder for inserting an inaudible data signal into an audio signal, the audio signal is first converted into a spectrum range and the masking threshold of the audio signal is determined. A pseudo-noise signal and a data signal are prepared and multiplied together to provide a frequency-spread data signal. The spread data signal is weighted by the masking threshold and then the audio signal and the weighted data signal are superimposed. In a process and a decoder for decoding an inaudible data signal inserted into an audio signal, first of all the audio signal is sampled and then the scanned audio signal is non-recursively filtered. Thereupon the filtered audio signal is compared with a threshold in order to re-obtain the data signal.
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46.发明公开VERFAHREN ZUR ERMITTLUNG DER EMPFANGBARKEIT VON FUNKSIGNALEN IN EINEM FUNKSYSTEM 失效用于确定的无线电信号的受理无线电系统
公开(公告)号：EP0740865A1
公开(公告)日：1996-11-06
申请号：EP95906244.0
申请日：1995-01-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , Institut für Rundfunktechnik GmbH
CPC分类号： H04H60/50 , H03J1/0058 , H04H20/16 , H04H20/22 , H04H20/28 , H04H20/67 , H04H60/51 , H04H60/64 , H04H60/65
摘要： The invention describes a process for finding the receivability of radio signals in a radio system and a receiver for performing the steps required on the reception side. The invention is particularly significant for a radio system, especially a synchronised broadcasting system, as in the reception of radio transmitters in mobile recievers, e.g. in a motor vehicle, the user wants to be able to receive the desired programme at the actual point of reception quickly and reliably. With prior art systems, like the radio data signal, this is possible only to a very limited degree, for instance with traffic news. The invention makes it possible, however, to discover which programmes and/or parts thereof can be received at any point, at least for small partial areas of a zone equipped with radio transmitters, and display them for user's individual selection. This gives the user the advantage of being able to see the receivable programmes and to receive the selected programme rapidly. The invention eliminates time-consuming seeking of a desired programme.
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公开(公告)号：EP0340301B1
公开(公告)日：1993-06-16
申请号：EP89901959.0
申请日：1988-10-06
发明人： EBERLEIN, Ernst , GERHÄUSER, Heinz , POPP, Harald , SEITZER, Dieter , SCHOTT, Hartmut , BRANDENBURG, Karl-Heinz
IPC分类号： G10L7/06
CPC分类号： H04B1/667 , G10H7/02 , G10H2250/235 , G10L19/02 , G10L19/0208
摘要： In a digital adaptive transform coding process for transmitting and/or storing acoustic signals, in particular musical signals, scanning values N of the acoustic signals are transformed into spectral coefficients M which are divided into frequency groups, and then quantified and coded. According to the invention, the quantified maximum value of each frequency group is used to characterize the general course of the spectrum. In addition, the same bit number is allocated to all values of a frequency group and the bits are allocated to the individual frequency groups on the basis of the quantified maximum value in the respective frequency group. Also described is a multi-signal processing system, in particular for implementing the process.
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公开(公告)号：EP2737649A1
公开(公告)日：2014-06-04
申请号：EP12740358.2
申请日：2012-07-25
IPC分类号： H04L1/00
CPC分类号： H04L1/004 , H04L1/0045 , H04L1/0047
摘要： The invention relates to a device for demultiplexing a packet-based transport stream (14) of transport stream packets (12), which are each provided with a systematic forward error detection code, wherein the transport stream packets are each assigned to a data sink (20) of a plurality of data sinks (20), such that a data stream (36) of data packets (38) protected by means of a forward error detection code, which data stream is addressed to a particular data sink (20), is embedded into a useful data section of the transport stream packets that are assigned to the same data sink (20), wherein the device is designed to determine a probability value for each of the plurality of data sinks for a predetermined transport stream packet (12) that is erroneous according to the systematic forward error detection code, which probability value specifies the probability that the predetermined transport stream packet (12) is associated with the respective data sink (20), and to associate the predetermined transport stream packet to a selected data sink of the plurality of data sinks on the basis of the probability values for the plurality of data sinks.
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公开(公告)号：EP1295476B1
公开(公告)日：2004-01-21
申请号：EP01964969.8
申请日：2001-06-11
IPC分类号： H04N7/173
CPC分类号： H04N21/6402 , H04N7/165 , H04N7/1675 , H04N7/17318 , H04N21/25891 , H04N21/26606
摘要： The invention relates to a method for addressing subscribers in a system for providing services, according to which attributes are allocated to the subscribers. The method comprises the placement (100) of the subscribers in a multidimensional subscriber matrix (140) in such a way that a plurality of subscribers that have at least one attribute in common are placed in a particular relation to each other. The invention also provides for joint addressing (110) of the plurality of subscribers using the relationship that exists between them in the subscriber matrix (140).
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公开(公告)号：EP1072136B1
公开(公告)日：2002-01-16
申请号：EP98920518.2
申请日：1998-04-14
发明人： EBERLEIN, Ernst , BADRI, Sabah , LIPP, Stefan , BUCHHOLZ, Stephan , HEUBERGER, Albert , GERHÄUSER, Heinz , FISCHER, Robert
IPC分类号： H04L27/26
CPC分类号： H04L27/2602 , H04L27/2657 , H04L27/2679
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