公开(公告)号：US4156867A

公开(公告)日：1979-05-29

申请号：US830531

申请日：1977-09-06

申请人： Stephen M. Bench ,  William R. Dirkes ,  Manohar A. Joglekar ,  James C. Secora ,  Michael A. Stepien

发明人： Stephen M. Bench ,  William R. Dirkes ,  Manohar A. Joglekar ,  James C. Secora ,  Michael A. Stepien

IPC分类号： H03G3/34 ,  H04B7/26 ,  H04L1/00 ,  H04L7/033 ,  H04L7/04 ,  G06F11/12

CPC分类号： H04L1/0057 ,  H03G3/34 ,  H04B7/2675 ,  H04W56/0085 ,  H04L1/0071 ,  H04L7/033 ,  H04L7/041

摘要： A data communication system for use in the control and monitoring of mobile stations, for example, in a bus monitoring system, from a central station over a communication channel carrying both data and voice information. Information is encoded into digital messages having a start code followed by one or more data blocks. The start code identifies the beginning of the data block that follows and enables synchronization of clock circuitry to the received data frequency. The data blocks have N digital words with M binary bits where one word is a parity word and N-1 words are data words. Each of the data words has a data portion and parity portion coded for correction of at least one error. Reliability is enhanced by a data detector which discriminates between data and noise or voice to provide an indication of the presence of data. In transmitting the digital messages, the bits of the N words in each data block are interleaved to provide protection against error bursts.

摘要翻译： 一种数据通信系统，用于通过承载数据和语音信息的通信信道从中央站控制和监视移动站，例如在总线监控系统中。 信息被编码成具有开始码后跟一个或多个数据块的数字消息。 起始码标识随后的数据块的开始，并启用时钟电路与接收数据频率的同步。 数据块具有N个具有M个二进制位的数字字，其中一个字是奇偶校验字，而N-1个字是数据字。 每个数据字具有编码用于校正至少一个错误的数据部分和奇偶校验部分。 通过数据检测器增强可靠性，数据检测器区分数据和噪声或语音以提供数据存在的指示。 在发送数字消息时，每个数据块中的N个字的比特被交织以提供防止错误突发的保护。

公开(公告)号：US4276651A

公开(公告)日：1981-06-30

申请号：US7087

申请日：1979-01-29

申请人： Stephen M. Bench ,  William R. Dirkes ,  Manohar A. Juglekar ,  James C. Secora ,  Michael A. Stephen

发明人： Stephen M. Bench ,  William R. Dirkes ,  Manohar A. Juglekar ,  James C. Secora ,  Michael A. Stephen

IPC分类号： H04B7/26 ,  H04L1/00 ,  H04L7/033 ,  H04L7/04 ,  H03L7/06

CPC分类号： H04L1/0057 ,  H04L1/0071 ,  H04L7/033 ,  H04L7/041 ,  H04W56/001 ,  H04W56/0035

摘要： A data communication system for use in the control and monitoring of mobile stations, for example, in a bus monitoring system, from a central station over a communication channel carrying both data and voice information. Information is encoded into digital messages having a start code followed by one or more data blocks. The start code identifies the beginning of the data block that follows and enables synchronization of clock circuitry to the received data frequency. The data blocks have N digital words with M binary bits where one word is a parity word and N-1 words are data words. Each of the data words has a data portion and parity portion coded for correction of at least one error. Reliability is enhanced by a data detector which discriminates between data and noise or voice to provide an indication of the presence of data. In transmitting the digital messages, the bits of the N words in each data block are interleaved to provide protection against error bursts.

摘要翻译： 一种数据通信系统，用于通过承载数据和语音信息的通信信道从中央站控制和监视移动站，例如在总线监控系统中。 信息被编码成具有开始码后跟一个或多个数据块的数字消息。 起始码标识随后的数据块的开始，并启用时钟电路与接收数据频率的同步。 数据块具有N个具有M个二进制位的数字字，其中一个字是奇偶校验字，而N-1个字是数据字。 每个数据字具有编码用于校正至少一个错误的数据部分和奇偶校验部分。 通过数据检测器增强可靠性，数据检测器区分数据和噪声或语音以提供数据存在的指示。 在发送数字消息时，每个数据块中的N个字的比特被交织以提供防止错误突发的保护。