公开(公告)号：US6167045A

公开(公告)日：2000-12-26

申请号：US973370

申请日：1997-12-08

申请人： Tullio Pirovano ,  Franco Maggioni

发明人： Tullio Pirovano ,  Franco Maggioni

IPC分类号： H04H20/40 ,  H04H60/15 ,  H04H60/17 ,  H04H60/44 ,  H04N5/44 ,  H04N7/167 ,  H04L12/56

CPC分类号： H04H60/17 ,  H04H20/16 ,  H04H20/40 ,  H04H60/15 ,  H04H60/44 ,  H04H2201/70 ,  H04N5/4401 ,  H04N7/1675 ,  H04N21/42684 ,  H04N21/64322

摘要： Information providers act as sources of information consisting of a plurality of variable length messages and issue control packets, enabling/disabling packets and data packets. Each data receiver has a unique address as a permanent attribute. The enabling/disabling packets selectively enable or disable a specific data receiver or a specific group of data receivers. Therefore to avoid that the loss of the enabling/disabling packet leads to the loss of the corresponding whole set of packets, each data receiver stores data packets for later use in the re-establishment of the entire set of transmission packets. However, only data packets provided by any FRIEND information provider (i.e. information provider from which the data receiver is authorized to receive information on a selective basis) are managed by the data receiver. Then when, during a re-transmission, a enabling/disabling packet related to the information stored into the data receiver is received, such information is immediately made available to the user of the data receiver, without waiting for its complete re-transmission.

摘要翻译： PCT No.PCT / EP95 / 02348 371 1997年12月8日第 102（e）日期1997年12月8日PCT Filed 1995年6月19日PCT公布。 公开号WO97 / 00563 日期1997年1月3日信息提供者作为包含多个可变长度消息和发布控制数据包的信息源，启用/禁用数据包和数据包。 每个数据接收器具有唯一的地址作为永久属性。 启用/禁用数据包选择性地启用或禁用特定数据接收器或特定数据接收器组。 因此，为了避免使能/禁用分组的丢失导致相应的整个分组的丢失，每个数据接收器存储数据分组以备以后用于重新建立整个传输分组集合。 然而，仅由数据接收机来管理任何FRIEND信息提供者提供的数据分组（即数据接收机被授权从其选择性地接收信息的信息提供者）。 然后，在重新发送期间，接收到与存储在数据接收器中的信息相关的启用/禁用分组，这样的信息立即可用于数据接收机的用户，而不等待其完全重传。