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1. 发明授权

US6098058A Postage metering system and method for automatic detection of remote postage security devices on a network 失效
标题翻译：用于自动检测网络上远程邮资安全设备的邮资计费系统和方法
公开(公告)号：US6098058A
公开(公告)日：2000-08-01
申请号：US993353
申请日：1997-12-18
申请人： Linda V. Gravell , David K. Lee , Perry A. Pierce , David W. Riley , Frederick W. Ryan, Jr. , Matthew E. Sanchez
发明人： Linda V. Gravell , David K. Lee , Perry A. Pierce , David W. Riley , Frederick W. Ryan, Jr. , Matthew E. Sanchez
IPC分类号： B65G61/00 , G06Q30/00 , G06Q50/00 , G07B17/00 , G06F17/00
CPC分类号： G07B17/00733 , G07B17/0008 , G07B2017/00096 , G07B2017/00137 , G07B2017/00201 , G07B2017/00241 , G07B2017/00322 , G07B2017/00766 , G07B2017/00967
摘要： A postage metering system includes a plurality of printer modules connected as part of a network and operating as clients on the network. Postal security devices (PSDs) are coupled the clients. Each PSD is local to the coupled client functioning as a host to the PSD and remote to the other of the plurality of clients. The PSD includes unique identification, postal value storage and a digital signature generator. The clients function as a postage metering network wherein a client requests evidence of postage payment from a remote PSD for concluding postage metering transactions. Each of the clients determines which of the remote PSDs are available for metering transactions on the network by broadcast messages and requests. In one embodiment, a broadcast request for the identity of remote PSDs whose host is logged onto the network is sent over the network by a client when the client logs onto the network. Additional broadcast requests are periodically sent over the network by the client to other clients logged onto the network. Broadcast messages indicating the unique identification of the PSD coupled to a host are sent over the network by the host when the host logs onto the network. Additional broadcast messages are sent periodically over the network by the host. Another broadcast message indicating that a PSD is no longer available is sent over the network by the host when it logs off the network. In alternate embodiments a network server controls broadcast requests and messages.
摘要翻译：邮资计费系统包括作为网络的一部分连接并作为网络上的客户端操作的多个打印机模块。邮政安全设备（PSD）与客户端相连。每个PSD对于耦合的客户端是本地的，用作PSD的主机并且远程到多个客户端中的另一个。 PSD包括唯一标识，邮政储值和数字签名生成器。客户端用作邮资计费网络，其中客户端从远程PSD请求邮费的证据，用于结束邮资计费交易。每个客户端通过广播消息和请求确定哪些远程PSD可用于网络上的计量事务。在一个实施例中，当客户端登录到网络上时，客户端通过网络通过网络发送对主机登录到网络上的远程PSD的身份的广播请求。客户端通过网络周期性地将其他广播请求发送到登录到网络的其他客户端。当主机登录到网络上时，通过主机通过网络发送指示耦合到主机的PSD的唯一标识的广播消息。主机通过网络周期性地发送附加的广播消息。主机在注销网络时，通过网络发送指示PSD不再可用的另一广播消息。在替代实施例中，网络服务器控制广播请求和消息。

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