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    • 15. 发明授权
    • Printing system including print server
    • 打印系统包括打印服务器
    • US5303336A
    • 1994-04-12
    • US4496
    • 1993-01-14
    • Seiji KageyamaKeiichi NakaneChikahiko Nagata
    • Seiji KageyamaKeiichi NakaneChikahiko Nagata
    • G06F3/12G06F15/00
    • G06F3/1293
    • A printing system in which a plurality of terminals for creating document data with different printing protocols or character codes, the document data including a string of printing commands, are connected to a print server for printing the document data via a network. Each terminal includes a device adding an identifier indicating a printing protocol or character code of the document data to be sent to the print server. The print server includes a converter for converting the different printing protocols or character codes into a common printing protocol or a common set of character codes according to the identifier. The print server may includes a memory for storing command processing programs associated with the different printing protocols or different sets of character codes and a switcher for selecting one command processing program or one set of character codes according to the identifier.
    • 一种打印系统,其中用于使用不同打印协议或字符代码创建文档数据的多个终端,包括一串打印命令的文档数据被连接到打印服务器,用于通过网络打印文档数据。 每个终端包括添加指示要发送到打印服务器的文档数据的打印协议或字符代码的标识符的设备。 打印服务器包括用于根据标识符将不同的打印协议或字符代码转换为通用打印协议或公共字符代码集的转换器。 打印服务器可以包括用于存储与不同打印协议或不同字符代码组相关联的命令处理程序的存储器和用于根据标识符选择一个命令处理程序或一组字符代码的切换器。
    • 20. 发明授权
    • Data communication apparatus having communication-mode changeover
function and method of data communication between data communication
stations having the same
    • 具有通信模式切换功能的数据通信装置和具有该通信模式切换功能的数据通信站之间的数据通信方法
    • US5157662A
    • 1992-10-20
    • US654196
    • 1991-02-12
    • Katsumi TadamuraKeiichi Nakane
    • Katsumi TadamuraKeiichi Nakane
    • H04L29/02H04L12/64H04L29/06H04L29/08H04Q11/04
    • H04Q11/0428
    • In an ISDN network, data communications can be performed in two communication modes corresponding to line and packet switchings in the same network. The line switching is effective in transmitting mass data to a receiving station and receiving the same therefrom at high speed, and accounting is made to a period of time required for communication in a public network. On the other hand, the packet switching is effective in transmitting low-speed data or small amounts of data produced in a discrete manner, and accounting is made to the amount of transmitted data in the public network.With a valve toward making efficient use of the two communication modes, the present invention relates to a data communication apparatus of the type wherein the two communication modes are changed as needed so as to perform data communications, and to a data communication system suitable for use with the data communication apparatus. In other words, a means for performing data communication continuously over two calls is provided so as to change one communication mode to another under data communication based on a user's request.Thus, when the amount of creation of data varies appreciably under communication, data communication is made based on the optimal communication mode determined according to the amount of creation of the data.
    • 在ISDN网络中,可以在对应于同一网络中的线路和分组交换的两种通信模式中执行数据通信。 线路切换在将质量数据传送到接收站并且以高速接收它们的同时有效,并且计算到公共网络中通信所需的时间段。 另一方面,分组交换在传输低速数据或以离散方式产生的少量数据时是有效的,并且对公共网络中的传输数据的量进行计费。 利用有效利用两种通信模式的阀门,本发明涉及一种数据通信设备,其中根据需要改变两种通信模式以执行数据通信,并且涉及适合于使用的数据通信系统 与数据通信装置。 换句话说,提供了一种用于通过两次呼叫连续执行数据通信的装置,以便根据用户的请求在数据通信下将一种通信模式改变为另一种通信模式。 因此,当数据的创建量在通信中变化明显时,基于根据数据的创建量确定的最佳通信模式进行数据通信。