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    • 41. 发明授权
    • 디지털 스피커 방송 시스템
    • 数字扬声器广播系统
    • KR100781685B1
    • 2007-12-03
    • KR1020060078364
    • 2006-08-18
    • 이재진
    • 이재진
    • H04B3/54G11B20/10G06F15/16H04B1/40
    • H04B3/542H04B3/20H04B3/544H04B2203/5408H04B2203/545
    • A digital speaker broadcasting system is provided to prevent interference or distortion for speaker equipment such as another speaker through serial communication at the same time as adding digital audio information to power on a power line by using a power supply line as a medium. A speaker management device(8) has a program for reception management of a predetermined digital speaker. A PLC(Power Line Communication) unit(9) transmits one common signal from the speaker management device(8). Communication controllers(10A,10B,...10N) are connected to the PLC unit(9). Speakers(20A,20B,...20N) control the communication controllers(10A,10B,...10N). The speaker management device(8), the PLC unit(9), the communication controllers(10A,10B,...10N), and the speakers(20A,20B,...20N) conduct one-way serial communication in an Ethernet communication way using one communication line.
    • 提供了一种数字扬声器广播系统,以通过串行通信同时通过使用电源线作为介质来添加数字音频信息以对电力线路供电来防止诸如另一扬声器的扬声器设备的干扰或失真。 扬声器管理装置(8)具有用于预定数字扬声器的接收管理的程序。 PLC(电力线通信)单元(9)从扬声器管理装置(8)发送一个公共信号。 通信控制器(10A,10B,... 10N)连接到PLC单元(9)。 扬声器(20A,20B,... 20N)控制通信控制器(10A,10B,... 10N)。 扬声器管理装置(8),PLC单元(9),通信控制器(10A,10B,... 10N)和扬声器(20A,20B,... 20N)进行单向串行通信 以太网通信方式使用一条通信线路。