-
1.发明授权Statistic coding arrangement for producing code words comprising a variable number of bits 失效用于生成包含可变数量位数的代码字的统计编码安排
公开(公告)号：US5062125A
公开(公告)日：1991-10-29
申请号：US389721
申请日：1989-08-04
CPC分类号： H03M7/42
摘要： This arrangement has an input (10) for receiving the information to be encoded in the form of fixed words comprising a number of bits, a first transcoding member (20) for applying said variable word to "n" outputs among n parallel outputs, a second transcoding member (22) for supplying from its output the indication of the length (n), and an accumulation member (30) for forming a first "modulo N" accumulated information and a second "modulo 2N" accumulated information, which are the result of operations performed on "n". A cyclic permutation circuit (32) supplies a permuted word which represents the permuted variable code word as a function of the first accumulated information, switching circuit (35) selectively transfers as a function of the second accumulated information the bits of the permuted word to a first and/or to a second register, and detection circuit (30,45) cooperates with the accumulation member for detecting the fill level of one of said registers to act on the transfer circuit so as to transfer the content of the filled register to the output.
摘要翻译： 这种布置具有用于以包括多个位的固定字的形式接收要编码的信息的输入端（10），用于将所述可变字应用于n个并行输出中的“n”个输出的第一代码转换部件（20）， 用于从其输出端提供长度（n）的指示的第二代码转换构件（22），以及用于形成第一“模N”累积信息和第二“模2N”累积信息的累加构件（30） 对“n”执行操作的结果。 循环置换电路（32）提供表示作为第一累积信息的函数的置换的可变码字的置换字，切换电路（35）根据第二累积信息选择性地传送置换字的位到 第一和/或第二寄存器，并且检测电路（30,45）与累积部件配合，用于检测所述寄存器之一的填充电平作用在传送电路上，以便将填充寄存器的内容传送到 输出。
-
2.发明授权Data transmission arrangement using a statistic coding, a transmitter and a receiver section suitable for such an arrangement 失效使用统计编码的数据传输安排，适用于这种安排的发射机和接收机部分
公开(公告)号：US5181229A
公开(公告)日：1993-01-19
申请号：US458121
申请日：1989-12-28
CPC分类号： G06T9/005 , H04J3/0605 , H04L7/041
摘要： A data receiver, and transmitter/receiver combination, for transmitting data using statistic coding. A data transmitter transmits statistic encoded data representing successive sample series in a form having a variable number of bits followed by two self-synchronizing codes, each self-synchronizing code including a suffix formed by a codeword or a concatenation of codewords. A data receiver for use with such a transmitted signal includes a correction circuit which can store at least one sample series, and a write counter for forming address codes defining locations of samples to be stored in the storage portion of the correction circuit. Preferably a sequencer provides a window signal which validates the output of a synchronizing signal detector in a time interval when the synchronizing word will probably be received.
摘要翻译： 数据接收机和发射机/接收机组合，用于使用统计编码来发送数据。 数据发送器以具有可变位数后跟两个自同步码的形式发送表示连续采样序列的统计编码数据，每个自同步码包括由码字形成的后缀或代码字的级联。 与这种发送信号一起使用的数据接收器包括可以存储至少一个采样序列的校正电路和用于形成地址码的写入计数器，该地址码定义要存储在校正电路的存储部分中的样本的位置。 优选地，定序器提供窗口信号，其在同步字可能被接收的时间间隔中验证同步信号检测器的输出。
-
搜索结果
2 条记录 (耗时 0.017 秒)
