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1.发明授权Data transmission system adapted to facilitate detection of safe receipt of a transmitted data frame by a receiving station 失效数据传输系统适于便于检测由接收站对发射数据帧的安全接收
公开(公告)号：US4558428A
公开(公告)日：1985-12-10
申请号：US344977
申请日：1982-02-02
IPC分类号： H04L29/08 , H04L12/433 , G06F11/08 , G06F11/16
CPC分类号： H04L12/433
摘要： This invention relates to a loop transmission system which has a plurality of stations connected to a loop transmission path to transmit data among the stations. In the transmission frame to be sent out from the sending station, specific information is included for identifying each frame and this information is held in the sending station. When the transmission frame returns to the sending station after being transmitted through the loop transmission path, the specific information in the frame is received and compared with the information held in the station and, if they coincide, it is decided that the transmission frame has been correctly received by the intended receiving station.
摘要翻译： 本发明涉及一种环路传输系统，其具有连接到环路传输路径的多个站，以在各站之间传输数据。 在从发送站发送的传输帧中，包括用于识别每个帧的特定信息，并且该信息被保存在发送站中。 当发送帧在通过环路传输路径发送后返回到发送站时，接收到帧中的特定信息并将其与保持在站内的信息进行比较，并且如果它们一致，则确定传输帧已被 由目标接收站正确接收。
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公开(公告)号：US4435704A
公开(公告)日：1984-03-06
申请号：US354918
申请日：1982-03-08
IPC分类号： H04L1/22 , H04L12/437 , H04Q9/00 , G06F11/00
CPC分类号： H04L1/22 , H04L12/437
摘要： A loop transmission system including a plurality of stations connected in series in a looped transmission line to transfer data among the stations, wherein the stations include a supervising station and at least one terminal station and the transmission line is duplicated so that when a fault occurs in currently used one of the transmission lines, the other transmission line which has been used as a spare is used for transmission of data, while the supervising station sends out a specific signal to the spare transmission line and the terminal stations each determines one of the transmission lines through which the specific signal is detected, as the spare.
摘要翻译： 一种环路传输系统，包括在循环传输线中串联连接以在站间传输数据的多个站，其中站包括监控站和至少一个终端站，并且传输线被复制，使得当发生故障时 目前使用的传输线之一，已经用作备用的另一传输线用于数据传输，而监控站向备用传输线发送特定信号，并且终端站各自确定传输 检测到特定信号的线路作为备用线路。
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3.再颁专利
公开(公告)号：USRE33181E
公开(公告)日：1990-03-13
申请号：US131110
申请日：1987-12-10
IPC分类号： H04L12/433
CPC分类号： H04L12/433
摘要： This invention relates to a loop transmission system which has a plurality of stations connected to a loop transmission path to transmit data among the stations. In the transmission frame to be sent out from the sending station, specific information is included for identifying each frame and this information is held in the sending station. When the transmission frame returns to the sending station after being transmitted through the loop transmission path, the specific information in the frame is received and compared with the information held in the station and, if they coincide, it is decided that the transmission frame has been correctly received by the intended receiving station.
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公开(公告)号：US4495595A
公开(公告)日：1985-01-22
申请号：US364539
申请日：1982-04-01
CPC分类号： H04L12/42
摘要： In a loop transmission system utilizing specific patterns, a specified station for sending the specific patterns sends a specific pattern S or a specific frame S' which is not delayed in each station in advance of sending a specific pattern G used for data exchanging in each station, thereby ensuring rapid detection of abnormality of the specific pattern G.
摘要翻译： 在利用特定模式的环路传输系统中，用于发送特定模式的指定站发送特定模式S或在每个站中未被延迟的特定帧S'，在发送用于每个站中的数据交换的特定模式G之前 ，从而确保特定模式G的异常的快速检测。
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公开(公告)号：US4506357A
公开(公告)日：1985-03-19
申请号：US359709
申请日：1982-03-19
CPC分类号： H04L12/42
摘要： A method of switching transmission lines for a transmission control system in which a plurality of stations are linked with loop type transmission lines having a stand-by transmission line characterized in that each of the stations is operable to switch the active transmission line to the stand-by transmission line in response to the detection of abnormality in the carrier wave and a station transmitting the carrier wave is operable to halt the transmission of the carrier wave on the active transmission line so that the overall transmission line is switched to the stand-by transmission line, thereby minimizing the system down time.
摘要翻译： 一种切换用于传输控制系统的传输线的方法，其中多个站与具有待机传输线的环路传输线路链接，其特征在于，每个站可操作以将主动传输线路切换到待机传输线路， 通过传输线响应于载波中的异常的检测，并且发送载波的站可操作地停止在主动传输线上的载波的传输，使得整个传输线被切换到备用传输 线，从而最小化系统停机时间。
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