A system and method for the non-contact transmission of data
    12.
    发明公开
    A system and method for the non-contact transmission of data 无效
    用于非接触式传输数据的系统和方法

    公开(公告)号:EP0492569A3

    公开(公告)日:1993-10-27

    申请号:EP91122099.4

    申请日:1991-12-23

    IPC分类号: G06K7/08 G06K19/07 H04L25/48

    CPC分类号: G06K7/0008 G06K19/0723

    摘要: A data transmission system for the non-contact transmission of data between a station (1) and a portable data carrier (2). The station (1) includes a station transmitter (3) operating at a predetermined frequency for generating a first signal and a demodulator (35) for detecting a second signal superimposed on the first signal. An antenna (5) is coupled via a length of cable (4) to the station transmitter (3) via a matching circuit (6) so as to be operative at said frequency regardless of the length of the cable (4). The portable data carrier (2) includes supply means (13) for coupling to a source of electric power and a data carrier tuned antenna circuit (10, 55) inductively coupled with the station transmitter (3) so as to receive power from the station (1). A data carrier data modulator (14) is provided for modulating the first signal with the second signal in response to data stored within the data carrier (2) and, by means of said inductive coupling, enabling the data to be transmitted from the data carrier (2) to the station (1).

    Self-healing data network and network node controller
    13.
    发明公开
    Self-healing data network and network node controller 失效
    塞尔维亚人Datennetz und Netzwerkknotensteuerungseinheit。

    公开(公告)号:EP0405756A2

    公开(公告)日:1991-01-02

    申请号:EP90305900.4

    申请日:1990-05-31

    IPC分类号: H04L12/42 H04L25/48

    CPC分类号: H04L12/437

    摘要: A self-healing data network and network node controller. Data transmission of data cells to form messages permitting self-clocking operation of each node and elastic buffering implemented to allow receipt of messages without regard to the phase of messages allows asynchronous operation of each node relative to other nodes. Fault detection and network self-­healing are performed by each node independently of other nodes.

    摘要翻译: 自愈数据网络和网络节点控制器。 数据信元的数据传输以形成允许每个节点进行自时钟操作的消息,并且实现为允许消息的接收而不考虑消息阶段的弹性缓冲允许每个节点相对于其他节点的异步操作。 故障检测和网络自愈由每个节点独立于其他节点执行。

    Alternate pulse inversion encoding scheme for serial data transmission
    14.
    发明公开
    Alternate pulse inversion encoding scheme for serial data transmission 失效
    用于串行数据传输的替代脉冲反相编码方案

    公开(公告)号:EP0384258A3

    公开(公告)日:1990-12-12

    申请号:EP90102673.2

    申请日:1990-02-12

    IPC分类号: H04L25/48 H04L25/49

    CPC分类号: H04L25/4925 H04L25/4902

    摘要: A method is provided for encoding and decoding data to be transmitted over a communication network via transformer coupling. The data is pulse width modulated, and split into separate first and second data streams containing alternate pulses. The first data stream is inverted, and recombined with the second data stream to produce a pulse width modulated bi-polar data signal having an alternating pulse sequence. The data is decoded at the receiver by inverting the pulses of one polarity, and combining them with the pulses of the other polarity to form a pulse width modulated data stream.

    摘要翻译: 提供了一种通过变压器耦合对通过通信网络发送的数据进行编码和解码的方法。 数据被脉冲宽度调制,并分成包含交替脉冲的分离的第一和第二数据流。 第一数据流被反转,并与第二数据流重组以产生具有交替脉冲序列的脉宽调制双极数据信号。 通过反转一个极性的脉冲并将其与另一极性的脉冲组合在一起,在接收器处对数据进行解码以形成脉宽调制数据流。

    Alternate pulse inversion encoding scheme for serial data transmission
    15.
    发明公开
    Alternate pulse inversion encoding scheme for serial data transmission 失效
    Kodierung mit alternierender PulsumkehrfürserielleDatenübertragung。

    公开(公告)号:EP0384258A2

    公开(公告)日:1990-08-29

    申请号:EP90102673.2

    申请日:1990-02-12

    IPC分类号: H04L25/48 H04L25/49

    CPC分类号: H04L25/4925 H04L25/4902

    摘要: A method is provided for encoding and decoding data to be transmitted over a communication network via transformer coupling. The data is pulse width modulated, and split into separate first and second data streams containing alternate pulses. The first data stream is inverted, and recombined with the second data stream to produce a pulse width modulated bi-polar data signal having an alternating pulse sequence. The data is decoded at the receiver by inverting the pulses of one polarity, and combining them with the pulses of the other polarity to form a pulse width modulated data stream.

    摘要翻译: 提供了一种通过变压器耦合对通过通信网络发送的数据进行编码和解码的方法。 数据被脉冲宽度调制,并分成包含交替脉冲的分离的第一和第二数据流。 第一数据流被反转,并与第二数据流重组以产生具有交替脉冲序列的脉宽调制双极数据信号。 通过反转一个极性的脉冲并将其与另一极性的脉冲组合在一起,在接收器处对数据进行解码以形成脉宽调制数据流。

    Duplex transmission system using high reliability data waveforms
    17.
    发明公开
    Duplex transmission system using high reliability data waveforms 失效
    双工传输系统中,与具有高可靠性的三角数据波形。

    公开(公告)号:EP0184325A2

    公开(公告)日:1986-06-11

    申请号:EP85307978.8

    申请日:1985-11-04

    发明人: Bell, Clifford

    摘要: A data system for transmitting multi-state data streams between a data transmitting station (1, 10) and a data receiving station (2), coupled together by a data transmission line (3). Associated with the data transmitting station (1, 10) is an encoder (10) for encoding the data stream prior to transmission and associated with the data receiving station (2) is a decoder (23, 24) for decoding the received signals.
    The encoder (10) comprises signal generating means (15, 16, 17) which selectively generates a first waveform (Fig. 2(b)(i)) corresponding to the integral of a positive pulse having a negative d.c. offset and a second waveform (Fig. 2(b)(ii)) corresponding to the integral of a negative pulse having a positive d.c. offset. The time average of each waveform and its associated d.c. offsets is substantially zero. The encoder (10) further comprises means (18) for reading the multi-state data stream and for outputting a composite waveform onto the data transmission line (3) consisting of a respective combination of the first and second waveforms for each state read from the multi-state data stream.
    The decoder (23, 24) comprises a differentiating circuit.

    Multilevel weighted transmission method and multilevel weighted transmission and reception apparatus
    20.
    发明公开
    Multilevel weighted transmission method and multilevel weighted transmission and reception apparatus 失效
    用于发送和接收加权的多级传输加权多级传输的方法和装置

    公开(公告)号:EP0702476A2

    公开(公告)日:1996-03-20

    申请号:EP95111926.2

    申请日:1995-07-28

    摘要: According to this invention, there are provided a multilevel weighted transmission method which allows error correction encoders to be reduced to one without error propagation and an apparatus using this method. The multilevel weighted transmission method is such that a plurality of hierarchic information source data strings are subjected to different multilevel weighted coding and modulation by a trellis-coded modulation scheme and the resulting strings are transmitted, and on the reception side, the received signal is subjected to the multilevel weighted demodulation and decoding according to the transmission side to obtain the original hierarchic information source data strings. When the specific first subsets are allocated to the hierarchic levels of the transmission channel in the multilevel weighted transmission and time-division multiplexed at a predetermined ratio, the order of time-division multiplexing the hierarchic levels of the transmission channel is ascending order of the quality of transmission error characteristic.

    摘要翻译: 。根据本发明,提供了允许误差校正编码器降低到一个没有误差传播和使用该方法的装置的多值加权的发送方法。 检查该多级加权的发送方法并分层信息源的数据串的一个多元化经受由网格编码调制方案不同的多级加权的编码和调制,并将所得的字符串是反式mitted,和在接收侧,所接收的信号进行 所述多级加权的解调和解码gemäß到发送侧以获得原始信息分层源数据串。 当特定的第一子集被以预定的比率分配给传输信道的分层电平在所述多级加权的发送和时分多路复用,时分的顺序复用传输信道的分层等级是升序的质量的顺序 的传输误差特性。