公开(公告)号：US06473469B1

公开(公告)日：2002-10-29

申请号：US09294088

申请日：1999-04-19

申请人： James R. Leitch

发明人： James R. Leitch

IPC分类号： H04L2720

CPC分类号： H04L27/2335 ,  H04L27/2057

摘要： A local area network is based on a ring of twisted pair cable links (UTP), each carrying at least 1.4 Mbps gross data rate. Each station on the network includes an encoder and a following station includes a decoder for PSK (phase shift keying) modulated serial data. The encoder uses an analog sine wave oscillator and inverter for generating antiphase analog sine wave signals at a carrier frequency and a switching circuit for selecting between the carrier signals according to the data signal to be transmitted. The decoder may use a simple integrator and comparator arrangement. The encoder and decoder may be provided in the form of an adapter circuit, such that a network based on optical fibre can be replaced by a network based on twisted pair cable using the same digital circuits. Generation of the PSK waveform by analog circuitry rather than digital synthesis reduces radio frequency emissions to a level suitable for use in an automotive audio/video communications network.

摘要翻译： 局域网基于一对双绞线电缆链路（UTP），每个端口的总数据速率至少为1.4 Mbps。 网络上的每个站包括编码器，后续站包括用于PSK（相移键控）调制串行数据的解码器。 编码器使用模拟正弦波振荡器和逆变器来产生载波频率的反相模拟正弦波信号和用于根据要发送的数据信号在载波信号之间进行选择的开关电路。 解码器可以使用简单的积分器和比较器装置。 编码器和解码器可以以适配器电路的形式提供，使得基于光纤的网络可以由使用相同数字电路的基于双绞线电缆的网络代替。 通过模拟电路而不是数字合成生成PSK波形将射频发射降低到适用于汽车音频/视频通信网络的水平。

公开(公告)号：US06531889B1

公开(公告)日：2003-03-11

申请号：US09871919

申请日：2001-06-01

申请人： James R. Leitch

发明人： James R. Leitch

IPC分类号： H03K19173

CPC分类号： H03K19/17736 ,  G06F15/7867 ,  H03K19/17732 ,  H03K19/17796

摘要： An configurable integrated-circuit device includes a plurality of regions that each contain electronic circuitry. The configurable integrated-circuit device also includes common circuitry adapted to provide at least one signal to at least two regions of the plurality of regions. The common circuitry and the at least two regions are positioned within the configurable integrated-circuit device so as to improve the latencies of the at least one signal to each of the at least two regions.

摘要翻译： 可配置的集成电路设备包括多个区域，每个区域包含电子电路。 可配置集成电路设备还包括适于向多个区域中的至少两个区域提供至少一个信号的公共电路。 公共电路和至少两个区域被定位在可配置集成电路器件内，以便改善至少一个信号对至少两个区域中的每一个的延迟。