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1. 发明申请

WO1993021694A1 METHOD OF TRANSMITTING AND/OR STORING DIGITIZED DATA-REDUCED AUDIO SIGNALS 审中-公开
标题翻译：用于转移和/或存储数字化数据的方法减量音频信号
公开(公告)号：WO1993021694A1
公开(公告)日：1993-10-28
申请号：PCT/EP1993000690
申请日：1993-03-22
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , PLENGE, Georg , WIESE, Detlef , LINK, Martin
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04B01/66
CPC分类号： H04B1/665 , H04B1/62 , H04B1/66
摘要： In order, during data reduction of an already data-reduced audio signal, or during the first data reduction of an audio signal, to reduce interference effects, making allowance for code violations, the invention proposes that, in the event of a code overload, a code is selected which gives the optimum interference distribution as regards reproduction quality. The time behaviour and/or spectral distribution of the audio signal can be modified, in particular before encoding, in accordance with a selected adjustment model, without any significant signal deterioration being subjectively perceivable by the listener after decoding.

2. 发明申请

WO1993008657A1 METHOD OF TRANSMITTING DIGITIZED STEREOPHONIC SOUND SIGNALS OVER RADIO CHANNELS SUBJECT TO INTERFERENCE 审中-公开
标题翻译：发射干扰信号的无线电通道发射信号的方法
公开(公告)号：WO1993008657A1
公开(公告)日：1993-04-29
申请号：PCT/EP1992002402
申请日：1992-10-20
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , PLENGE, Georg , WIESE, Detlef , STOLL, Gerhard
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04H01/00
CPC分类号： H04H20/88 , H04H20/33 , H04H40/36
摘要： In order to transmit digitized stereophonic sound signals over channels, in particular radio channels, subject to interference, the invention proposes that transmission errors are detected at the decoder end and, if necessary, corrected or screened out. Most of the computer calculations necessary for the correction or screening out of the errors are carried out at the encoder end. The result of the computer calculations is transmitted in coded form as supplementary information to the decoder, which uses the transmitted result in the correction or screening out of errors.

3. 发明申请

WO1993002508A1 PROCESS FOR FINDING THE OVERALL MONITORING THRESHOLD DURING A BIT-RATE-REDUCING SOURCE CODING 审中-公开
标题翻译：在降低比特率源编码期间发现全面监控阈值的过程
公开(公告)号：WO1993002508A1
公开(公告)日：1993-02-04
申请号：PCT/EP1992001658
申请日：1992-07-21
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , SEDLMEYER, Robert , BREFORT, Andreas , GROH, Jens , KRAFFT, Wolfgang , ROSINSKI, Klaus , WIESE, Detlef , STOLL, Gerhard , LINK, Martin
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04B01/66
CPC分类号： H04B1/665
摘要： In oder to find the overall monitoring threshold (6) during a bit-rate-reducing source coding of digitised audio signals (1), a requantization and coding regulation for the time or spectral scanning values (2) of the audio signal is found from the masking effect of all relevant maskers and noise maskers (100, 200, 300) and from the steady audio threshold (400). To this end the masking sides (101, 102, 201, 202, 301, 302) of the selected maskers are segmented and approximated in the individual segments by low-order polynomials, whereby the coefficients of the low-order polynomials are found. The intensities of the maskers converted into a logarithmic level are used to find the coefficients of the low-order polynomials. The overall monitoring threshold (6) is found at individual or eventually selected support points in steps, masker by masker, from the polynomials describing the masking sides of the eventually selected maskers.

4. 发明申请

WO1992019053A1 PROCESS FOR RADIO TRANSMISSION OF A DIGITALLY CODED DATA STREAM 审中-公开
标题翻译：数字编码数据流的无线传输方法
公开(公告)号：WO1992019053A1
公开(公告)日：1992-10-29
申请号：PCT/EP1992000795
申请日：1992-04-08
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , PLENGE, Georg , SCHNEEBERGER, Günter
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04H01/00
CPC分类号： H04H20/33
摘要： The invention concerns a process for radio transmission of a data stream in an already occupied frequency spectrum without disturbing the stations already allocated to the spectrum. To this end, a plurality of RF carriers modulated with the data stream are transmitted either in the frequency spaces between two FM stations ofadjacent frequency ranges at the same place or in the free frequency ranges on either side of an FM station, while avoiding this allocated nominal frequency. The level of the plurality of RF carriers is set sufficiently low in comparison with the level of the RF carrier of the FM stations of adjacent frequency or of the central FM station to obtain a sufficiently large signal-to-noise ratio in the FM reception of the FM station(s) but sufficiently large to preclude interference from the geographically remote FM stations which fall in the frequency range or frequency spaces reserved for the transmission of the plurality of RF carriers. The data stream which modulates the RF carriers has an enhanced error protection to preclude interference from the FM stations of adjacent frequency or from the central FM station.

5. 发明申请

WO1995020276A1 PROCESS FOR FINDING THE RECEIVABILITY OF RADIO SIGNALS IN A RADIO SYSTEM 审中-公开
标题翻译：用于确定的无线电信号的受理无线电系统
公开(公告)号：WO1995020276A1
公开(公告)日：1995-07-27
申请号：PCT/DE1995000055
申请日：1995-01-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , INSTITUT FÜR RUNDFUNKTECHNIK GMBH , GERHÄUSER, Heinz , SEITZER, Dieter , PLENGE, Georg , SEDLMEYER, Robert
发明人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04H01/00
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.
摘要翻译：本发明描述了用于确定无线电信号的无线电系统的接受和用于执行接收侧的措施的接收器的方法。本发明是用于在广播系统中，特别是单频系统，显著特别有用。与移动接收机，例如广播台的接收之后在机动车辆，是希望的用户，他得到在每个接收位置分配款项及所需的程序，他快速又安全。与当前系统中，例如这是非常有限的，例如在交通消息可能的无线电数据信号。本发明允许，但是，但对于每个位置至少确定为通过广播接收区域和用户提供的较小的子部分可接收有程序和/或节目类型将被呈现给他的个人选择的显示器上。使用户有它就会显示在应收项目和选择所需程序后的优势，这也切换还快。费时的搜索找到一个希望的节目，在本发明中省略。

6. 发明申请

WO1993008656A1 PROCESS FOR TRANSMITTING OR STORING OVER DISTURBED CHANNELS A DIGITALIZED, ENCODED AUDIO SIGNAL COMPOSED OF A SERIES OF INFORMATION BLOCKS 审中-公开
标题翻译：发送或存储干扰信道的过程数字化的编码音频信号由一系列信息块组成
公开(公告)号：WO1993008656A1
公开(公告)日：1993-04-29
申请号：PCT/EP1992002401
申请日：1992-10-20
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , WIESE, Detlef
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04H01/00
CPC分类号： H04H20/95 , H04H60/07
摘要： Digitalized encoded audio signals for transmission over disturbed channels are composed of a series of information blocks made of information units containing various types of information, such as control information, scale factor information and information on encoded scanning values derived from partial-band and/or transformation coding at the source. The units of information concerning the encoded scanning values are allocated to a determined spectral structure. Before its transmission or storage, the encoded audio signal is subjected to a channel encoding dependent on the desired error protection. When errors are recognized, they are corrected, and when the errors cannot be corrected, they are concealed. For the channel encoding of the units of information concerning the encoded scanning values, a variable bit error protection is provided depending on the allocation of the individual information unit to a determined spectral structure, i.e., units of information concerning the encoded scanning values of lower frequency audio signal fractions are given a higher bit error protection than units of information concerning the encoded scanning values of higher frequency audio signal fractions. The variable error protection to be selected for the individual information units is further determined depending on the admissible duration and frequency, according to subjective criteria, of the applied error concealment.

7. 发明申请

WO1992013396A1 PROCESS FOR TRANSMITTING DIGITISED, BLOCK-CODED AUDIO SIGNALS USING SCALE FACTORS 审中-公开
标题翻译：使用规模因子发送数字，块编码音频信号的过程
公开(公告)号：WO1992013396A1
公开(公告)日：1992-08-06
申请号：PCT/EP1991001211
申请日：1991-06-27
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , WIESE, Detlef
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04B01/66
CPC分类号： H04B1/667 , H03M7/3053
摘要： The transmission of digitised, block-coded audio signals makes use of scale factors formed in the block-coding of the digitised audio signals from the peak value of a sequence (block) of signal values and added to the scanned and possibly reduced signal values of the sequence concerned in quantified form. When the audio signals are coded, certain differences are formed by sign and amount from a number of k successive scale factors of a partial frequency band or a group of spectrum values of the audio signal divided into n partial bands or spectrum values (with n» 1). These (k-1)*n differences are arranged in value classes, each of which includes a number of one or several possible differences. To the sequence of (k-1)*n value classes is allocated -- separately for each of the n partial bands or spectrum value groups -- a transmission model of new scale factors consisting of control data and a sequence of new scale factors. The number of successive, different new scale factors within the sequence is thereby smaller than or equal to the number of successive, different scale factors of the partial band or spectrum value group of the audio signal under consideration. The control data identify the allocation of the new scale factors to one or more of the k blocks of the scanned and possibly reduced signal values of the relevant partial band or spectrum value group. When the audio signals are decoded, the appropriate new scale factors are allocated to the blocks of scanned and possibly reduced signal values using the control data. From the scanned and possibly reduced new scale factors, audio signals are again generated which correspond more or less to the original audio signals.

8. 发明申请

WO1993026099A1 METHOD OF DETECTING ERRORS IN DIGITIZED DATA-REDUCED AUDIO AND DATA SIGNALS 审中-公开
标题翻译：程序故障检测数字化数据减小的声信号和数据信号
公开(公告)号：WO1993026099A1
公开(公告)日：1993-12-23
申请号：PCT/EP1993001454
申请日：1993-06-09
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , SEDLMEYER, Robert , WIESE, Detlef
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04B01/66
CPC分类号： H04B1/665 , G10L19/005 , H03M13/05 , H04H20/28
摘要： The invention concerns a method of detecting and, if necessary, correcting or masking errors in a digitized data-reduced audio signal consisting of a sequence of data blocks which are to be transmitted or stored, the individual data blocks being, for instance, bit-allocation data, scale-factor selection data, scale factors or encoded sampling values from part-band filtering or transformation in the spectral region, such as Fourier transforms. In this method, one or more received bit patterns for the data units of a data block are graded by their probability of occurrence and, if the probability is low, declared to be erroneous and, if necessary, corrected or masked.

9. 发明申请

WO1993019541A1 PROCESS FOR TRANSMITTING OR STORING DIGITISED MULTI-CHANNEL AUDIO SIGNALS 审中-公开
标题翻译：传输或存储数字多通道音频信号的过程
公开(公告)号：WO1993019541A1
公开(公告)日：1993-09-30
申请号：PCT/EP1993000628
申请日：1993-03-17
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , SCHNEEBERGER, Günther , WIESE, Detlef
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04H05/00
CPC分类号： H04H20/88 , H03M13/23 , H04H20/12 , H04H20/26
摘要： For the transmission and storage of digitised multi-channel audio signals there is a variable bit error protection depending on the differing significance concerning the subjective reproduction quality of the audio channels. In the event of transmission interference, sections of an audio channel in which errors can no longer be corrected are replaced by substantially corrected sections of another audio channel with enhanced error protection.

10. 发明申请

WO1993019542A3 PROCESS FOR TRANSMITTING OR STORING DIGITALIZED, MULTI-CHANNEL AUDIO SIGNALS 审中-公开
公开(公告)号：WO1993019542A3
公开(公告)日：1993-09-30
申请号：PCT/EP1993000629
申请日：1993-03-17
申请人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH , SILZLE, Andreas , STOLL, Gerhard , THEILE, Günther , LINK, Martin
发明人： INSTITUT FÜR RUNDFUNKTECHNIK GMBH
IPC分类号： H04H05/00

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