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    • 2. 发明公开
    • System and circuitry for television signal processing
    • 系统和Schaltung zur Verarbeitung eines Fernsehsignals。
    • EP0271846A2
    • 1988-06-22
    • EP87118427.1
    • 1987-12-12
    • ALCATEL ITALIA Società per Azioni
    • Cucchi, SilvioModena, MarcoPeruta, Roberto
    • H04N11/04
    • H04N11/044H04N19/00
    • This invention permits a coloured TV signal to be efficiently encoded by unidimensional or bidimensional transform, thereby adopting a variable frequency sampling clock and a digital processing of the sampled signal.
      In this way, one single analog signal can be changed into three signals having statistical characteristics similar to the component signals' (Y,U,V in case of PAL).
      Encoding through transform of the signals obtained with the system of this invention permits to reach high compression of the information to be transmitted.
      It is further possible to uniformly treat said composite signals and the component signals by means of practically identical hardware.
    • 本发明允许通过一维或二维变换有效地对彩色TV信号进行编码,从而采用可变频率采样时钟和采样信号的数字处理。 以这种方式,一个模拟信号可以被改变成具有类似于分量信号(PAL的情况下的Y,U,V)的统计特性的三个信号。 通过使用本发明的系统获得的信号的变换进行编码,可以实现要传输的信息的高压缩。 还可以通过实际上相同的硬件来均匀地对待所述复合信号和分量信号。
    • 7. 发明公开
    • System, packet structuring and device for processing output information from a signal encoder
    • System,Packetaufbau und Einrichtung zur Verarbeitung der Ausgangsinformation eines Signalkodierers。
    • EP0441168A2
    • 1991-08-14
    • EP91100769.8
    • 1991-01-22
    • ALCATEL ITALIA Società per Azioni
    • Cucchi, SilvioParladori, GiorgioVecchietti, GiovannaModena, Marco
    • H04N7/32H04N7/06
    • H04N21/434H04N19/30H04N19/61H04N19/70H04N21/236
    • The invention refers to a system for structurizing the information outgoing at variable bit rate from a video signal encoder and for organizing it in information units, the so-called cells or packets suitable for being transmitted and treated by packet transmission networks which are able to send transmission data streams at variable speed. Preferably it is used an encoder belonging to a certain cathegory; there are located some VIDEO UNITS, and the information related to each of them is classified into three classe; each VIDEO UNIT is associated to a VIDEO PACKET comprising a header and a body; each of the previous classes related to a VIDEO UNIT uses a different technique for the protection against transmission errors and/or cell loss. According to the technique used for the error protection, the error concealment can be implemented or cannot be implemented.
    • 本发明涉及一种用于结构化从视频信号编码器以可变比特率输出的信息并用于以信息单元组织的系统,所谓的小区或分组适合于由能够发送的分组传输网络发送和处理 以可变速度传输数据流。 优选地,它使用属于某一导管的编码器; 有一些视频单位,与每个视频单位相关的信息分为三个部分; 每个视频单元与包括标题和主体的视频分组相关联; 与VIDEO UNIT有关的每个先前类别都使用不同的技术来防止传输错误和/或信元丢失。 根据用于错误保护的技术,错误隐藏可以实现或不能实现。