公开(公告)号：KR1020000047242A

公开(公告)日：2000-07-25

申请号：KR1019980064035

申请日：1998-12-31

Applicant: 주식회사 머큐리 ,  한국전자통신연구원

Inventor： 손민정 ,  안재영 ,  김원호

IPC: H04L29/04

Abstract: PURPOSE: A data communication deveice between a main processor and a plurality of subprocessors is provided to efficently perform data communication between a main processor and a plurality of subprocessors for transmitting and receiving the data in random. CONSTITUTION: A data communication deveice between a main processor and a plurality of subprocessors includes a flag-register(221) for storing a flag data of requiring data transmission applied from each subprocessors(210-217). An original data transmission require flag data is given to the subprocessors(210-217) and forward the flag data when the data is frowarded. The main processor periodically detects the flag data and setup a predetermined data link for corresponding a subprocessor. Then, each processors are connected to data serial ports, respectively.

Abstract translation: 目的：提供主处理器和多个子处理器之间的数据通信，以有效地执行主处理器和多个子处理器之间的数据通信，以随机发送和接收数据。 构成：主处理器和多个子处理器之间的数据通信包括用于存储从每个子处理器（210-217）应用的需要数据传输的标志数据的标志寄存器（221）。 原始数据传输需要向子处理器（210-217）提供标志数据，并且当数据被折返时转发标志数据。 主处理器周期性地检测标志数据，并为相应的一个子处理器建立一个预定的数据链接。 然后，每个处理器分别连接到数据串行端口。

公开(公告)号：KR100256692B1

公开(公告)日：2000-05-15

申请号：KR1019970082626

申请日：1997-12-31

Applicant: 한국전자통신연구원

Inventor： 성낙선 ,  조용훈 ,  안재영 ,  최훈 ,  김원호 ,  전경재 ,  손민정

IPC: H04L12/28 ,  H04B7/14

Abstract: PURPOSE: A network synchronizing apparatus for a multimedia satellite communication system is provided to easily conform data transmission time between each set-top box by transmitting PCR data when a center station transmits a predetermined number of TS packets and synchronizing a data transmission timing signal by every set-top box through the same method when the set-top box receives the PCR data. CONSTITUTION: An ethernet interface(11) generates an IP packet on the basis of an ethernet frame inputted from an IP switch and outputs it. An input buffer(12) sequentially stores the IP packet data outputted through the ethernet interface(11). An IP packet controller(13) determines the type of the input data on the basis of a header of the IP packet data stored in the input buffer(12), controls a packet generation of a PS packet generator(15) and a TS packet generator(16) on the basis of the determining result, and controls a transmission data processing unit on the basis of a control data applied from the ethernet interface(11). A subscriber information storing unit(14) stores a PID allocated for each set-top box(4). The PS packet generator(15) generates a PS(Private Section) packet on the basis of the data inputted from the IP packet controller(13). The TS packet generator(16) generates an MPEG-2 TS packet on the basis of the PS packet data inputted from the PS packet generator(15), a PID applied from the IP packet controller(16) and traffic data stored in the input buffer(12) and outputs it. The TS packet generator(16) counts the number of the TS packets transmitted for the set-top box(4), reads a program clock reference(PCR) value applied from a PCR generator(18) when the count value is a predetermined value, and transmits it to the set-top box(4). A frequency generator(17) generates a 27MHz frequency signal. The PCR generator(18) counts the frequency signal outputted from the frequency generator(17) and outputs the count value data.

Abstract translation: 目的：提供一种用于多媒体卫星通信系统的网络同步装置，用于通过在中心站发送预定数量的TS分组并通过每个机顶盒的数据传输定时信号同步时，通过发送PCR数据来容易地符合每个机顶盒之间的数据传输时间 当机顶盒接收到PCR数据时，通过相同的方法机顶盒。 构成：以太网接口（11）根据从IP交换机输入的以太网帧生成IP包，并输出。 输入缓冲器（12）依次存储通过以太网接口（11）输出的IP分组数据。 IP分组控制器（13）基于存储在输入缓冲器（12）中的IP分组数据的报头来确定输入数据的类型，控制PS分组生成器（15）的分组生成和TS分组 基于确定结果生成器（16），并且基于从以太网接口（11）应用的控制数据来控制传输数据处理单元。 用户信息存储单元（14）存储为每个机顶盒（4）分配的PID。 PS分组生成器（15）基于从IP分组控制器（13）输入的数据生成PS（专用分组）分组。 TS分组生成器（16）基于从PS分组生成器（15）输入的PS分组数据，从IP分组控制器（16）应用的PID和存储在输入中的业务数据，生成MPEG-2TS分组 缓冲器（12）并输出。 TS分组生成器（16）对于机顶盒（4）发送的TS分组的数量进行计数，当计数值为预定值时，读取从PCR产生器（18）应用的程序时钟参考（PCR）值 ，并将其发送到机顶盒（4）。 频率发生器（17）产生27MHz的频率信号。 PCR产生器（18）对从频率发生器（17）输出的频率信号进行计数，并输出计数值数据。