会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 9. 发明授权
    • Process for the transmission of images
    • 图像传输过程
    • US5771102A
    • 1998-06-23
    • US553467
    • 1995-12-22
    • Wilhelm VogtDirk LappeRodolfo Mann PelzOliver VogtGunnar NitscheFrieder Mundt
    • Wilhelm VogtDirk LappeRodolfo Mann PelzOliver VogtGunnar NitscheFrieder Mundt
    • H04N7/26H04L1/00H04N7/50H04N7/52H04N7/64H04N7/66H04N19/00H04N19/61H04N19/89H04N1/415H03M13/02
    • H04N19/00H04N19/61H04N19/89H04N7/52H04L2001/0098H04N19/70
    • The process for transmission of images enables various classes of source-coded image data to be channel-coded and transmitted at various class code rates. For this purpose, source-coded image data to be transmitted are divided into classes of different sensitivity with respect to transmission errors and the classes are provided with different error protection and are channel-coded for transmission. Information words are provided at the beginning of each class containing information regarding the class type, code rate, number of data bits belonging to a particular class and regarding the error protection employed. In addition, a synchronizing word is added to the image data for each image. In the receiver the first information words are channel-decoded according to a fixed code rate and the information stored in the first information words including code rate is used for the channel-decoding of the received coded image data. The image data are subsequently subjected to an image source decoding and read out.
    • PCT No.PCT / DE95 / 00320 Sec。 371 1995年12月22日第 102(e)日期1995年12月22日PCT 1995年3月8日PCT PCT。 出版物WO95 / 24770 日期1995年9月14日图像传输过程使各种类型的源编码图像数据能够以各种类码率进行通道编码和传输。 为此,要发送的源编码图像数据被分成相对于传输错误的不同灵敏度的类别,并且这些类别被提供有不同的错误保护,并且被传送用于传输。 在每个类的开始处提供信息字,其中包含关于类类型,码率,属于特定类的数据位的数量以及关于所采用的错误保护的信息。 此外,对每个图像的图像数据添加同步字。 在接收机中,根据固定码率对第一信息字进行信道解码,并且将存储在包括码率的第一信息字中的信息用于接收的编码图像数据的信道解码。 随后对图像数据进行图像源解码和读出。
    • 10. 发明授权
    • Method for arithmetic decoding
    • 算术解码方法
    • US5737345A
    • 1998-04-07
    • US517540
    • 1995-08-21
    • Rodolfo Mann PelzBechir Jannet
    • Rodolfo Mann PelzBechir Jannet
    • H03M7/40H03M13/23H03M13/39H04N7/24H03M13/12
    • H04N21/2383H03M13/39H04N21/4382
    • A method for arithmetic decoding improves the reliability of the arithmetic coding. For the purpose of channel decoding, use is made of a soft output Viterbi algorithm which, along-side the decided data item, supplies an item of reliability information. In addition, a data item is predicted for the decided data item in accordance with channel-decoded and arithmetically decoded data already transmitted, and subsequently arithmetically coded and compared with the channel-decoded data item. If the two data items do not correspond, the distribution density function used for the arithmetic decoding is changed by using the reliability information, and the channel-decoded data item is subsequently arithmetically decoded using the new distribution density function.
    • 一种算术解码方法提高了算术编码的可靠性。 为了进行信道解码,使用软输出维特比算法,该算法沿着决定的数据项提供可靠性信息项。 此外,根据已经发送的信道解码和算术解码的数据,对所决定的数据项目预测数据项,并随后进行算术编码并与信道解码的数据项进行比较。 如果两个数据项不对应,则通过使用可靠性信息来改变用于算术解码的分布密度函数,并且随后使用新的分布密度函数对通道解码的数据项进行算术解码。