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    • 2. 发明授权
    • Controlled simultaneous analog and digital communication
    • 同时控制的模拟和数字通信
    • US5537441A
    • 1996-07-16
    • US67519
    • 1993-06-14
    • Gordon BremerJoseph Q. ChapmanP. Michael HendersonKurt E. HolmquistKenneth D. KoRichard K. Smith
    • Gordon BremerJoseph Q. ChapmanP. Michael HendersonKurt E. HolmquistKenneth D. KoRichard K. Smith
    • H04J7/00H04L27/34H04L5/12
    • H04J7/00H04L27/3483
    • A method and apparatus for control of concurrent communication of analog information and digital information. In general terms, when the communication channel is viewed as a multi-dimensional space, the digital information signal is divided into symbols, and the symbols are mapped onto the signal space with a preset distance between them. The analog signal, generally limited in magnitude to less than half the distance separating the symbols, is converted to component signals and added (i.e., vector addition) to the symbols. The sum signal is then transmitted to the receiver where the symbols are detected and subtracted from the received signal to yield the analog signal components. The transmitted analog signal is recreated from those components. Both half-duplex and full-duplex operation is available in accordance with this invention. The illustrative embodiment includes a controller that is sensitive to input signals applied to the modem disclosed herein. To wit, the control is sensitive to signals from the analog port, signals from the digital port, and signals from the port that carries the combined digital and analog signals. Operation of the near-end modem is controlled as well as operation of the far-end modem.
    • 一种用于控制模拟信息和数字信息的并发通信的方法和装置。 一般来说,当通信信道被视为多维空间时,数字信息信号被划分为符号,并且符号以它们之间的预定距离映射到信号空间。 通常将模拟信号限制为小于分隔符号的距离的一半,被转换成分量信号并且相加(即矢量相加)到符号。 然后将和信号发送到接收机,其中检测符号并从接收信号中减去符号以产生模拟信号分量。 传输的模拟信号从这些组件重新创建。 根据本发明,半双工和全双工操作都可用。 说明性实施例包括对施加到本文公开的调制解调器的输入信号敏感的控制器。 就是说,这个控制对来自模拟端口的信号,来自数字端口的信号以及来自端口的信号都是敏感的,这些信号带有组合的数字和模拟信号。 近端调制解调器的操作受到远端调制解调器的操作和控制。