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21 条记录 (耗时 0.017 秒)

    METHOD OF INSERTING ADDITIONAL DATA INTO A COMPRESSED SIGNAL
    12.
    发明公开
    METHOD OF INSERTING ADDITIONAL DATA INTO A COMPRESSED SIGNAL 审中-公开
    方法夹杂附加数据成压缩信号

    公开(公告)号：EP1374414A2

    公开(公告)日：2004-01-02

    申请号：EP02711036.0

    申请日：2002-02-08

    申请人： Radioscape Limited

    发明人： FERRIS, Gavin Robert ,  Woodward, Michael Vincent

    IPC分类号： H03M7/30

    CPC分类号： G10L19/00

    摘要： Many compressed audio or video frames contain silence (if audio), or a blank image (if video); these essentially information content free (e.g. silent if audio or blank if video) frames can be both detected whilst still in compressed form and then used to carry the additional data. In an MPEG implementation, subbands associated with silent frames are rendered digitally silent and then used to carry PAD (Programme Associated Data).

    DIGITAL TRANSACTIONS FOR THE DELIVERY OF MEDIA FILES
    14.
    发明公开
    DIGITAL TRANSACTIONS FOR THE DELIVERY OF MEDIA FILES 审中-公开
    DIGITAL交易中传递媒体文件

    公开(公告)号：EP1310056A2

    公开(公告)日：2003-05-14

    申请号：EP01949649.6

    申请日：2001-07-09

    申请人： Radioscape Limited

    发明人： FERRIS, Gavin, Robert

    IPC分类号： H04H1/00 ,  H04N7/167

    CPC分类号： H04H60/14 ,  H04H20/20 ,  H04H20/28 ,  H04H20/71 ,  H04H20/82 ,  H04H60/07 ,  H04H60/23 ,  H04H60/27 ,  H04H60/82 ,  H04H60/91 ,  H04H2201/37

    摘要： An incomplete/partly corrupted media file is delivered 'in the clear'; in addition, a delta file is delivered to users meeting access control criteria which, when combined with the incomplete/partly corrupted parts allows a complete and uncorrupted version of the media file to be re-constructed. The method allows, in one implementation, a secure music purchase system to operate over digital radio: for example, the start of a song when played over the radio is usually deliberately talked over and the end cut short to prevent listeners being able to record a complete copy. With the present system, this practice can continue, but listeners can also purchase the missing or corrupted sections to enable them to possess a complete and uncorrupted version for playback.

    SOFTWARE ENCODER FOR ENCODING DIGITAL AUDIO STREAMS
    18.
    发明公开
    SOFTWARE ENCODER FOR ENCODING DIGITAL AUDIO STREAMS 审中-公开
    软件CODER ENCODE数字音频流

    公开(公告)号：EP1290849A1

    公开(公告)日：2003-03-12

    申请号：EP01931946.6

    申请日：2001-05-25

    申请人： Radioscape Limited

    发明人： FERRIS, Gavin Robert

    IPC分类号： H04L29/06 ,  H04B1/66 ,  H04H1/00

    CPC分类号： G10L19/16 ,  H04H60/04 ,  H04H2201/20

    摘要： An encoder for encoding digital streaming media at a studio site, in which the encoder is a software encoder which uses an IP based protocol to communicate with a remote, central multiplexer. Because the encoder is a software encoder, it is significantly cheaper than conventional, dedicated hardware; the encoder can typically run on a PC or industrial PC. As an IP based protocol is used, the present invention is cheaper to implement than STI over G703/4 or a WG1/2 bus. Similarly, handling reconfiguration data is possible over IP and the software of the encoder also leads to increased reconfigurability. Placing the encoder at the studio site also eliminates the conventional need for extra codecs in a central multiplexing paradigm, further reducing cost and increasing quality.

    DIGITAL WIRELESS BASESTATION
    19.
    发明公开
    DIGITAL WIRELESS BASESTATION 审中-公开
    DIGITAL FUNKBASISSTATION

    公开(公告)号：EP1260028A2

    公开(公告)日：2002-11-27

    申请号：EP01942810.1

    申请日：2001-01-24

    申请人： Radioscape Limited

    发明人： FERRIS, Gavin, Robert,Flat 8, St. Christophers

    IPC分类号： H04B1/40 ,  G06F9/46

    CPC分类号： H04L29/06 ,  H04B1/0003 ,  H04B1/406 ,  H04L69/06 ,  H04L69/16 ,  H04L69/161 ,  H04W80/00 ,  H04W88/08 ,  H04W88/10

    摘要： A digital wireless basestation is disclosed which is programmed with a hardware abstraction layer suitable for enabling one or more baseband processing algorithms to be represented using high level software. Commodity protocols and hardware turn a basestation, previously a highly expensive, vendor-locked, application specific product, into a generic, scalable baseband platform, capable of executing many different modulation standards with simply a change of software. IP is used to connect this device to the backnet, and IP is also used to feed digitised IF to and from third party RF modules, using an open data and control format.