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1. 发明公开

EP1325634A2 SYSTEM PROVIDING INDIVIDUALLY COMPLIABLE RADIO SERVICE 有权
标题翻译：系统提供一种独立组装无线业务
公开(公告)号：EP1325634A2
公开(公告)日：2003-07-09
申请号：EP01986814.0
申请日：2001-09-29
申请人： Thomson Licensing S.A.
发明人： AUST, Andreas, Matthias , STEINBORN, Peter , SCHRÖDER, Ernst, F. , SPILLE, Jens , SCHMIDT, Jürgen , SCHREIBER, Ulrich
IPC分类号： H04N7/24 , H04N7/58 , H04H1/00 , H04H1/02 , H04H1/10
CPC分类号： H04H20/10 , H04H60/37
摘要： So that listeners can compile their radio service on an individual basis, broadcasts are classified according to the respective information content, and the broadcasts in each information class are sent in a respective data stream at parallel times. At the reception end, the data streams are simultaneously picked up, are possibly buffer-stored, and are forwarded to a reproduction device according to individual stipulations.

2. 发明公开

EP1568250A2 METHOD AND APPARATUS FOR PROCESSING AUDIO SIGNALS FROM A BITSTREAM 有权
标题翻译：方法和系统用于处理音频信号从流
公开(公告)号：EP1568250A2
公开(公告)日：2005-08-31
申请号：EP03780037.2
申请日：2003-11-24
申请人： Thomson Licensing S.A.
发明人： SCHMIDT, Jürgen , SPILLE, Jens , SCHRÖDER, Ernst, F. , BÖHM, Johannes
IPC分类号： H04S1/00
CPC分类号： H04S3/008 , H04S1/007
摘要： In the MPEG-4 standard ISO/IEC 14496:2001 several audio objects that can be coded with different MPEG-4 format coding types can together form a composed audio system representing a single soundtrack from the several audio substreams. In a receiver the multiple audio objects are decoded separately, but not directly played back to a listener. Instead, transmitted instructions for mixdown are used to prepare a single soundtrack. Mixdown conflicts can occur in case the audio signals to be combined have different channel numbers or configurations. According to the invention an additional audio channel configuration node is used that tags the correct channel configuration information items to the decoded audio data streams to be presented. The invention enables the content provider to set the channel configuration in such a way that the presenter at receiver side can produce a correct channel presentation under all circumstances. An escape code value in the channel configuration data facilitates correct handling of not yet defined channel combinations.

3. 发明公开

EP1444689A1 DETERMINATION OF THE PRESENCE OF ADDITIONAL CODED DATA IN A DATA FRAME 有权
标题翻译：检测的其他数据的存在编码在数据帧的
公开(公告)号：EP1444689A1
公开(公告)日：2004-08-11
申请号：EP02772407.9
申请日：2002-11-02
申请人： Thomson Licensing S.A.
发明人： SCHRÖDER, Ernst, F.
IPC分类号： G10L19/14
CPC分类号： G10L19/167
摘要： An mp3-standard bitstream is formatted into a sequence of fixed-length data frames. These include headers, side infor-mation, main information and a remaining data field without generally defined information denoted as 'ancillary data'. The mp3PRO format is an extension of the mp3 format, wherein the additional mp3PRO data are transferred in the ancillary data fields. In various applications, e.g. Internet music search machines, a necessity arises for a fast determination of the bitstream types. Such determination is normally exe-cuted using an mp3PRO decoder. However, because the frame header does not contain a corresponding pointer to the start address of the ancillary data field, an mp3PRO decoder must first completely decode at least one data frame according to the mp3 standard in order to find the end address of the mp3 data and thereby the following start address of the mp3PRO data in that data frame. Thereafter the mp3PRO decoder must examine the data following in the data stream for character-istics that are typical for mp3PRO additional information. The invention discloses how the bitstream type can be deter-mined without using mp3 decoding and without using an mp3PRO decoder.

4. 发明公开

EP1438712A2 METHOD AND APPARATUS FOR DECODING A CODED DIGITAL AUDIO SIGNAL WHICH IS ARRANGED IN FRAMES CONTAINING HEADERS 有权
标题翻译： IS的方法和装置用于解码编码的数字音频信号在头份含FRAME ARRANGED
公开(公告)号：EP1438712A2
公开(公告)日：2004-07-21
申请号：EP02779477.5
申请日：2002-10-11
申请人： Thomson Licensing S.A.
发明人： SCHRÖDER, Ernst, F. , BÖHM, Johannes
IPC分类号： G10L19/14
CPC分类号： G10L19/167
摘要： With audio data reduction on the basis of ISO/IEC standard 11172-3, a frame length varying by 8 bits is used at a sampling frequency of 44.1 kHz in order to arrive, on average, at a particular fixed data rate. The lengthening of a data frame is signalled by a padding bit in the header of the frames. The invention dispenses with evaluation of the padding bit. Instead, the mean frame length L is calculated, L is rounded down to the next integer, for the subsequent frame it is first established whether the expected sync word for this frame appears, and, if this is so, this frame is decoded without taking into account the padding bit, but if the expected sync word for this frame does not appear, the decoding of the frame is started one 8-bit later without taking into account the padding bit.

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