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    Data transfer between high bit rate buses via unshielded low bit rate bus
    2.
    发明授权
    Data transfer between high bit rate buses via unshielded low bit rate bus 失效
    通过非屏蔽低比特率总线在高比特率总线之间进行数据传输

    公开(公告)号：US5341370A

    公开(公告)日：1994-08-23

    申请号：US25838

    申请日：1993-03-03

    Applicant: Derek J. Nuhn ,  Gordon W. Servant ,  Robert P. Brennan ,  George A. Jeffrey

    Inventor： Derek J. Nuhn ,  Gordon W. Servant ,  Robert P. Brennan ,  George A. Jeffrey

    IPC: H04J3/06 ,  H04M1/253 ,  H04Q11/04 ,  H04B3/00 ,  H04L5/22

    CPC classification number: H04Q11/0442 ,  H04J3/0626 ,  H04M1/253 ,  H04Q11/0471 ,  H04Q2213/216 ,  H04Q2213/297

    Abstract: A method and apparatus for transferring high data rate data between a pair of separated high data rate buses comprising storing a group of high data rate data from one of the buses, one of which is connected to a digital telephone set, reading the stored data at a low data rate, conditioning the low data rate data to remove high frequency components therefrom, applying the conditioned data to an unshielded cable for transmission to the separated other high data rate bus, receiving and storing the conditioned data from the unshielded cable and reading the stored conditioned data at a high data rate to said other bus.

    Abstract translation: 一种用于在一对分离的高数据速率总线之间传送高数据速率数据的方法和装置，包括从一条总线存储一组高数据速率数据，其中一条总线连接到数字电话机，读取存储的数据 低数据速率，调节低数据速率数据以从其中去除高频分量，将经调节的数据应用到非屏蔽电缆以传输到分离的其他高数据速率总线，从非屏蔽电缆接收和存储经调节的数据并读取 以高数据速率将所调节的数据存储到所述另一总线。

    Communications protocol for switching systems
    3.
    发明授权
    Communications protocol for switching systems 失效
    交换系统通信协议

    公开(公告)号：US5333189A

    公开(公告)日：1994-07-26

    申请号：US91474

    申请日：1993-07-13

    Applicant: Robert S. Clary ,  Lars T. Rymert

    Inventor： Robert S. Clary ,  Lars T. Rymert

    IPC: H04L29/06 ,  H04Q11/04 ,  H04M3/00

    CPC classification number: H04Q11/0457 ,  H04L29/06 ,  H04Q11/0407 ,  H04Q2213/216

    Abstract: In a switching network including a central system and at least one end point device connected to the central system, a protocol for communicating between the central and the at least one end point device includes a plurality of signals that may be transmitted from the end point device to the central system, and a plurality of signals that may be transmitted from the central system to the end point device.

    Abstract translation: 在包括中央系统和连接到中央系统的至少一个终端设备的交换网络中，用于在中心和至少一个终点设备之间进行通信的协议包括可从终端设备发送的多个信号 到中央系统，以及可以从中央系统发送到终点设备的多个信号。

    ISDN user-network interface system
    4.
    发明授权
    ISDN user-network interface system 失效
    ISDN用户网络接口系统

    公开(公告)号：US5309440A

    公开(公告)日：1994-05-03

    申请号：US940040

    申请日：1992-09-03

    Applicant: Hajime Nakamura ,  Hiroyuki Kikuta ,  Fumio Watanabe ,  Masanobu Fujioka

    Inventor： Hajime Nakamura ,  Hiroyuki Kikuta ,  Fumio Watanabe ,  Masanobu Fujioka

    IPC: H04J3/06 ,  H04Q11/04

    CPC classification number: H04Q11/0471 ,  H04J3/0682 ,  H04Q2213/194 ,  H04Q2213/211 ,  H04Q2213/216 ,  H04Q2213/36

    Abstract: An ISDN-user-network interface system comprising an interface buffer and an interface adapter. The interface buffer provided between an ISDN network terminal equipment and a terminal equipment to receive an up-signal frame transmitted from said terminal equipment to said network terminal equipment, to store said up-signal frame, and to transmit said stored up-signal frame at a timing when said network terminal equipment is capable of detecting the synchronization of said up-signal frame. The interface adapter provided between said ISDN network terminal equipment and said terminal equipment, to receive an up-signal frame transmitted from said terminal equipment to said network terminal equipment, to detect D-channel bits of said up-signal frame, to transmit said up-signal frame to said network terminal equipment, to copy said detected D-channel bits into echo channel bits of a down-signal frame from said net-work terminal equipment to said terminal equipment received immediately after the transmission of said up-signal frame, and to transmit said down-signal frame to said terminal equipment.

    Abstract translation: 一种包括接口缓冲器和接口适配器的ISDN用户网络接口系统。 提供在ISDN网络终端设备和终端设备之间的接口缓冲器，用于接收从所述终端设备发送到所述网络终端设备的上行信号帧，以存储所述上行信号帧，并将所述存储的上行信号帧发送到 所述网络终端设备能够检测所述上行信号帧的同步的定时。 所述接口适配器设置在所述ISDN网络终端设备和所述终端设备之间，以接收从所述终端设备发送到所述网络终端设备的上行信号帧，以检测所述上行信号帧的D信道比特，以发送所述上行 对所述网络终端设备进行信号复制，将所述检测到的D信道位复制到从所述网络工作终端设备到所述上行信号帧发送之后立即接收到的所述终端设备的下行信号帧的回声信道位中， 并将所述下行信号帧发送到所述终端设备。

    Terminal adapter capable of reducing a memory capacity of a buffer memory
    7.
    发明授权
    Terminal adapter capable of reducing a memory capacity of a buffer memory 失效
    能够减少缓冲存储器的存储容量的终端适配器

    公开(公告)号：US5646959A

    公开(公告)日：1997-07-08

    申请号：US302544

    申请日：1994-09-08

    Applicant: Yoshiyuki Kamishima

    Inventor： Yoshiyuki Kamishima

    IPC: H04Q11/04 ,  H04B1/66 ,  H04B14/06 ,  H04L23/00

    CPC classification number: G06F3/14 ,  H04Q11/0471 ,  G09G2370/025 ,  H04Q2213/034 ,  H04Q2213/103 ,  H04Q2213/174 ,  H04Q2213/216 ,  H04Q2213/297

    Abstract: In a terminal adapter which is located between a data terminal equipment unit (11) and a data communication network (12) and which includes a buffer memory (22, 27) for memorizing an original data signal sequence sent from each of the data terminal equipment unit and the data communication network, the original data signal sequence is subjected to data compression by a data compression circuit to be thereafter memorized into the buffer memory and to be read out of the buffer memory as a readout data signal sequence. The readout data signal sequence is expanded by a data expansion circuit (32, 35) to be sent to the data terminal equipment unit or the data communication network at a transmission rate matched therewith. The data compression may be executed by the use of an LZ method, a modified LZ method, such as LZW, LZSS, or the like.

    Abstract translation: 在位于数据终端设备单元（11）和数据通信网络（12）之间的终端适配器中，包括缓冲存储器（22,27），用于存储从每个数据终端设备发送的原始数据信号序列 单元和数据通信网络，原始数据信号序列由数据压缩电路进行数据压缩，然后被存储到缓冲存储器中，并作为读出数据信号序列从缓冲存储器读出。 读出数据信号序列由数据扩展电路（32,35）扩展，以与之对应的传输速率发送到数据终端设备单元或数据通信网络。 可以通过使用LZ方法，LZW，LZSS等的修改的LZ方法来执行数据压缩。

    Method for multiple access in a digital communication system
    8.
    发明授权
    Method for multiple access in a digital communication system 失效
    一种数字通信系统中多重访问的方法

    公开(公告)号：US5544158A

    公开(公告)日：1996-08-06

    申请号：US191470

    申请日：1994-02-04

    Applicant: Dan Oprea ,  Jacob Cepelinski

    Inventor： Dan Oprea ,  Jacob Cepelinski

    IPC: H04L5/14 ,  H04M9/02 ,  H04Q11/04 ,  H04J3/00

    CPC classification number: H04Q11/0471 ,  H04L5/1492 ,  H04M9/025 ,  H04Q2213/197 ,  H04Q2213/216 ,  H04Q2213/292 ,  H04Q2213/299 ,  H04Q2213/36

    Abstract: A digital data communications system, comprises a master station and a plurality of slave stations communicating with said master station in a multiburst scheme over a digital link having a plurality of communication channels associated respectively with said slave stations. In each frame the master station transmits a master burst over all the channels and the slave stations transmit slave bursts over the respective channels associated therewith.

    Abstract translation: 数字数据通信系统包括主站和多个从站，通过具有分别与所述从站相关联的多个通信信道的数字链路以多波段方案与所述主站通信。 在每个帧中，主站在所有通道上发送主脉冲串，并且从站在与之相关的相应通道上发送从站脉冲串。

    Method of activating tandem digital subscriber lines
    10.
    发明授权
    Method of activating tandem digital subscriber lines 失效
    激活串联数字用户线路的方法

    公开(公告)号：US5243593A

    公开(公告)日：1993-09-07

    申请号：US722086

    申请日：1991-06-27

    Applicant: Jeffrey L. Timbs

    Inventor： Jeffrey L. Timbs

    IPC: H04Q11/04

    CPC classification number: H04Q11/0442 ,  H04Q11/0471 ,  H04Q2213/103 ,  H04Q2213/109 ,  H04Q2213/176 ,  H04Q2213/216

    Abstract: A method for activating tandem digital subscriber lines separated by a carrier system in a communication link connecting a switch and a network termination is implemented by a microcontroller which interfaces with a digital subscriber line transceiver to extract and transmit activation request information and a programmable gate array to relay and interpret activation information conveyed across the carrier system. The microcontroller intelligently combines the activation information received from the carrier system, the activation indicator bit received from the digital subscriber line transceiver, and the transceiver status to independently activate the digital subscriber lines in a controlled sequence, so that a proper response is conveyed to the T-interface to preclude premature regarding of the physical transmission channel as being transparent. This is achieved by not setting the downstream activation bit to the network termination to 1 until each upstream digital subscriber line is fully activated in both directions.

    Abstract translation: 一种用于在连接交换机和网络终端的通信链路中激活由载波系统分离的串联数字用户线的方法由与数字用户线收发器接口的微控制器实现，以将激活请求信息和可编程门阵列提取到 中继和解释通过载体系统传送的激活信息。 微控制器智能地组合从载波系统接收到的激活信息，从数字用户线路收发器接收的激活指示符比特和收发器状态，以受控的顺序独立地激活数字用户线，使得适当的响应被传送到 T接口防止物理传输通道过早的透明。 这通过不将网络终端的下游激活位设置为1，直到每个上游数字用户线在两个方向上被完全激活来实现。

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