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1.发明授权
公开(公告)号：US5280281A
公开(公告)日：1994-01-18
申请号：US781885
申请日：1991-10-24
CPC分类号： B60R16/0315 , B60R2016/0322
摘要： A communication network, such as an audiovisual system, on an automobile has a master unit and a plurality of slave units which are connected to a common communication bus. Each of the master and slave units is capable of successively issuing a plurality of command data through asynchronous transmission to another unit and returning acknowledgement data in response to the command data transmitted from another unit. The units add received command data to acknowledgement data when the acknowledgement data is to be returned. The command data includes first command data requiring acknowledgement data and second command data requiring no acknowledgement data. Each unit handles the first and second command data differently when the acknowledgement data is to be returned. When communication data is to be transmitted between the units, major classification data and subclassification data, depending on the contents of the communication data, are added to a leading portion of the communication data.
摘要翻译： 汽车上的诸如视听系统的通信网络具有连接到公共通信总线的主单元和多个从单元。 主单元和从单元中的每一个能够通过异步传输连续地发出多个命令数据到另一单元，并且响应于从另一单元发送的命令数据返回确认数据。 当要返回确认数据时，单元将收到的命令数据添加到确认数据。 命令数据包括需要确认数据的第一命令数据和不需要确认数据的第二命令数据。 当要返回确认数据时，每个单元处理第一和第二命令数据的方式不同。 当在单元之间传送通信数据时，根据通信数据的内容，将主要分类数据和子分类数据添加到通信数据的前导部分。
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公开(公告)号：US5351041A
公开(公告)日：1994-09-27
申请号：US782382
申请日：1991-10-24
IPC分类号： H04L12/403 , H04J3/02
CPC分类号： H04L12/40013 , H04L12/403
摘要： A communication network, such as an audiovisual system, on an automobile has a master unit and a plurality of slave units which are connected to a common communication bus. When the communication network starts operating, connection confirmation request information is transmitted from the slave units to the master unit. The master unit awaits connection confirmation request information from at least one of the slave units for a predetermined period of time after the communication network starts operating. Thereafter, the predetermined period of time is extended if the reception of connection confirmation request information from all the slave units that were connected when the connection network stopped operating in a preceding cycle is not completed. If reception acknowledgement information from the master unit is not detected for a predetermined period of time, then the slave units automatically enter a low power consumption mode.
摘要翻译： 汽车上的诸如视听系统的通信网络具有连接到公共通信总线的主单元和多个从单元。 当通信网络开始运行时，连接确认请求信息从从单元发送到主单元。 在通信网络开始操作之后的预定时间段，主单元等待来自至少一个从单元的连接确认请求信息。 此后，如果连接网络在前一周期中停止工作时连接的所有从属单元的连接确认请求信息的接收未完成，则延长预定时间。 如果在预定时间段内没有检测到来自主单元的接收确认信息，则从设备自动进入低功耗模式。
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公开(公告)号：US5436851A
公开(公告)日：1995-07-25
申请号：US291837
申请日：1994-08-17
IPC分类号： H04B1/20 , H04L12/403 , G06F17/00
CPC分类号： H04L12/403 , H04B1/205 , H04L2012/40273
摘要： A communication network, such as an audiovisual system, on an automobile has a master unit and a plurality of slave units which are connected to a common communication bus. The display unit displays operation of the other slave units based on display data transmitted from the other slave units. The display data includes character data regarding a character to be displayed and/or standard bit data common with the slave units. The character data and/or the standard bit data may be positioned at the leading end of the display data.
摘要翻译： 汽车上的诸如视听系统的通信网络具有连接到公共通信总线的主单元和多个从单元。 显示单元基于从其他从单元发送的显示数据来显示其他从单元的操作。 显示数据包括关于要显示的字符和/或与从属单元共用的标准位数据的字符数据。 字符数据和/或标准位数据可以位于显示数据的前端。
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公开(公告)号：US5305355A
公开(公告)日：1994-04-19
申请号：US874968
申请日：1992-04-27
CPC分类号： G06F15/177 , B60R16/0315
摘要： A data communication system for use on a motor vehicle includes at least one master unit and at least one slave unit which are connected to a communication bus. When the master unit is enabled, the master controller of the master unit outputs connection request demand data to the slave unit. The slave unit has a slave controller which transmits its own connection request information to the master unit in response to the connection request demand data from the master unit. The slave controller transmits, to the master unit, first change information indicating whether the connection information stored in a first memory and connection information of the slave unit that has been transmitted to the master unit are identical to each other or not. The master controller transmits some or all of connection information stored in a second memory to slave units based on the first change information of the slave units. When the data communication system is enabled, the slave controller of each slave unit transmits its own connection request information to the master unit. In response to the connection request information, the master controller establishes a communication address of each slave unit different from those of the other slave units and transmits the established communication address to the slave unit.
摘要翻译： 用于机动车辆的数据通信系统包括连接到通信总线的至少一个主单元和至少一个从单元。 当主单元使能时，主单元的主控制器向从单元输出连接请求数据。 从单元具有从控制器，其响应于来自主单元的连接请求需求数据向主单元发送其自己的连接请求信息。 从控制器向主单元发送第一改变信息，指示存储在第一存储器中的连接信息和已发送到主单元的从单元的连接信息是否彼此相同。 主控制器基于从单元的第一改变信息将存储在第二存储器中的一些或全部连接信息发送到从单元。 当启用数据通信系统时，每个从单元的从控制器向主机发送自己的连接请求信息。 响应于连接请求信息，主控制器建立与其他从单元不同的每个从单元的通信地址，并将建立的通信地址发送到从单元。
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