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    • 21. 发明授权
    • Data communication system for controlling prioritization and transfer of
data and method therefor
    • 用于控制数据的优先级和传输的数据通信系统及其方法
    • US6014722A
    • 2000-01-11
    • US858439
    • 1997-05-19
    • Yehuda RudinYoram YeivinEliezer Weitz
    • Yehuda RudinYoram YeivinEliezer Weitz
    • G06F13/364G06F13/00G06F13/14
    • G06F13/364
    • A data communication system (2) provides a circuit and method for prioritizing and controlling the transfer of data to and from a plurality of communication channels (6-11). The data communication system defines a predetermined data threshold level (X,Y) for a data buffer (16-21) for each of the plurality of communication channels. A service request signal is generated for a one of the plurality of communication channels when a respective data buffer stores data to be transferred. The data communication system generates a threshold signal for a communication channel when a data value stored in a respective data buffer reaches a predetermined data threshold level of the data buffer. The priority levels of the communication channels which generate threshold and service request signals are then compared to determine a high priority communication channel. The highest priority communication channel is then serviced.
    • 数据通信系统(2)提供了用于优先化和控制与多个通信信道(6-11)之间的数据传送的电路和方法。 数据通信系统为多个通信信道中的每个通信信道定义数据缓冲器(16-21)的预定数据阈值电平(X,Y)。 当相应的数据缓冲器存储要传送的数据时,为多个通信信道中的一个通信信道生成服务请求信号。 当存储在相应的数据缓冲器中的数据值达到数据缓冲器的预定数据阈值电平时,数据通信系统产生通信信道的阈值信号。 然后比较产生阈值和服务请求信号的通信信道的优先级,以确定高优先级的通信信道。 然后对最高优先级的通信信道进行维护。
    • 22. 发明授权
    • Multichannel HDLC framing/deframing machine
    • 多通道HDLC框架/解帧机
    • US5671223A
    • 1997-09-23
    • US566444
    • 1995-11-30
    • Boaz ShacharRozen NahumYeivin YoramEliezer Weitz
    • Boaz ShacharRozen NahumYeivin YoramEliezer Weitz
    • H04L29/06H04L29/08H04J13/00H04Q11/04
    • H04L29/06H04L69/324
    • A high speed multichannel HDLC framing machine (112) cycles through Time Division Multiplexed (TDM) channels identifying a channel table (188) for each channel. HDLC state, data to be framed, and a mask are loaded into registers (176, 178), and the framer/deframer (112) is activated. The framer/deframer (112) returns an updated HDLC state, status flags, and a framed code word. The framed code word is multiplexed in a FIFO queue (58) for output on the high speed TDM line (28). A high speed multichannel HDLC deframing machine (112) receives a series of code words from a FIFO queue (56). For each code word received, a corresponding channel table (188) is identified. HDLC state, the code word to be deframed and, a mask are loaded into registers (176, 178), and the framer/deframer (112) is activated. The framer/deframer returns an updated HDLC state, status flags, and potentially a deframed data word.
    • 高速多通道HDLC成帧机(112)循环通过时分复用(TDM)信道,标识每个信道的信道表(188)。 HDLC状态,要成帧的数据和掩码被加载到寄存器(176,178)中,并且成帧器/去帧器(112)被激活。 成帧器/解帧器(112)返回更新的HDLC状态,状态标志和成帧码字。 成帧码字被复用在FIFO队列(58)中,用于在高速TDM线路(28)上输出。 高速多通道HDLC去帧机(112)从FIFO队列(56)接收一系列码字。 对于接收的每个代码字,识别相应的通道表(188)。 HDLC状态,要解帧的码字,并且掩码被加载到寄存器(176,178)中,并且成帧器/去帧器(112)被激活。 成帧器/解帧器返回更新的HDLC状态,状态标志以及可能的反帧数据字。