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    • 5. 发明授权
    • System and method for accessing and distributing electronic documents
    • 用于访问和分发电子文件的系统和方法
    • US6144997A
    • 2000-11-07
    • US181715
    • 1998-10-28
    • Michael LammingMichael J. Flynn
    • Michael LammingMichael J. Flynn
    • G06F13/00G06F15/02G06F17/21G06F21/00H04M11/00H04Q7/06H04Q7/08H04Q7/12G06F15/16
    • G06F21/608G06F15/0225G06F21/35G06F21/6218G06F2221/2141
    • A system including any number workstations, file servers, printers and other fixed devices coupled in a network, and a number of portable devices carried by users and coupled to the network by infrared (IR) link. Each portable device emulates its user's personal satchel for documents: the device is programmed to receive transmit and store document references or tokens, each of which is associated with an electronic document stored in the database. Documents are distributed from one person to another by transmission of document references or tokens, and a document is sent to a printer by beaming that document's reference or token to an IR transceiver associated with that printer. The portable device is preferably a handheld or wristwatch computer with a graphical display for enabling the user to transfer documents, and the fixed devices preferably include a scanner/copier/printer having its own IR transceiver.
    • 包括耦合在网络中的任何数量的工作站,文件服务器,打印机和其他固定设备的系统以及由用户携带并通过红外线(IR)链路耦合到网络的许多便携式设备。 每个便携式设备模拟其用户的个人文书,用于文档:该设备被编程为接收传送和存储文档引用或令牌,其中每一个与存储在数据库中的电子文档相关联。 文件通过传送文件引用或令牌从一个人分发到另一个人,并且通过将该文档的引用或令牌发送到与该打印机相关联的IR收发器将文档发送到打印机。 便携式设备优选地是具有用于使用户能够传送文件的图形显示器的手持计算机,并且固定设备优选地包括具有其自己的IR收发器的扫描器/复印机/打印机。
    • 8. 发明授权
    • Method for radiosynchronization of base stations in a simulcasting
network
    • 同步网络中基站的无线电同步方法
    • US5404575A
    • 1995-04-04
    • US888913
    • 1992-05-26
    • Pekka Lehto
    • Pekka Lehto
    • H04Q7/06H04H20/67H04Q7/08H04Q7/12H04Q7/36H04B7/00
    • H04H20/67
    • A method for radiosynchronization of base stations in a simulcasting network which includes a plurality of base stations to be synchronized, comprising the following steps: a.) a first set of base stations transmitting respective synchronization signals; b.) a second set of base stations receiving at least one of the respective synchronization signals for the purpose of determining several estimates of synchronization error, where each of the several estimates is an estimate of synchronization error between one of the first set of transmitting base stations and one of the second set of receiving base stations; and, c.) adjusting subsequent transmissions of particular base stations to minimize synchronization errors between base stations within the first or second set to achieve simulcast transmission of all base stations in the network, wherein the adjustment is made based upon the several estimates, and wherein each of the several estimates was obtained based upon a synchronization signal which was either received or transmitted by the particular base station being adjusted.
    • 一种用于同时广播网络中的基站的无线电同步的方法,其包括要同步的多个基站,包括以下步骤:a)发送相应同步信号的第一组基站; b。)第二组基站,其接收相应的同步信号中的至少一个,以便确定多个同步误差的估计,其中所述几个估计中的每一个是所述第一组发射基站之一之间的同步误差的估计 站和第二组接收基站之一; 以及c)调整特定基站的后续传输以使所述第一或第二组内的基站之间的同步误差最小化,以实现所述网络中所有基站的联播传输,其中所述调整基于所述若干估计进行,并且其中 基于正被调整的特定基站接收或发送的同步信号获得多个估计中的每一个。
    • 10. 发明授权
    • Paging system with selectively actuable pocket printers
    • 分页系统,带有可选择性致动的口袋打印机
    • US3944724A
    • 1976-03-16
    • US254668
    • 1972-05-18
    • Jack S. KilbyRobert F. SchweitzerJohn McCrady
    • Jack S. KilbyRobert F. SchweitzerJohn McCrady
    • B41J2/345B41J2/355B41J5/30G08B5/22H04L17/00H04L17/02H04L21/00H04L29/00H04Q7/00H04Q7/06H04Q7/08H04Q7/10H04Q7/12H04Q7/14H04Q7/16H04Q7/20
    • G08B5/227
    • A paging system, or the like, having a transmitting station and a plurality of pocket sized subscriber units is disclosed. The transmitting station has a keyboard for encoding alphanumeric characters of a message and a subscriber code, a storage means for a predetermined number of characters of a message, means for converting a binary character code, such as ASCII, to a binary code representative of the character to be displayed in matrix form, and a format circuit for transmitting successive columns of the successive matrix code with blank columns and timing spaces therebetween to facilitate reconstruction of the subscriber code and message. Each of the subscriber units is battery powered and sized to be carried in a pocket of the user's clothing. Each pocket unit includes a receiver, means for detecting a unique subscriber code and enabling the display, for example, a non-impact type thermal printer having a single column of thermal print elements, and a system for advancing a thermally sensitive record tape past the print elements. Synchronism of such pocket printer is controlled by the format of the subscriber code and message, with blank spaces at the end of each column of data being detected to cause the print elements to be heated in accordance with the column data and then the record tape advanced one column width. A receiver having a nonprinting, visual message display is also disclosed.
    • 公开了具有发送站和多个口袋大小的用户单元的寻呼系统等。 发送站具有用于编码消息和订户代码的字母数字字符的键盘,用于消息的预定数量字符的存储装置,用于将诸如ASCII之类的二进制字符代码转换为代表 以矩阵形式显示的字符,以及格式化电路,用于发送连续矩阵码的连续列与空列和其间的定时空间,以便重建用户代码和消息。 每个用户单元是电池供电的并且尺寸被安置在用户衣服的口袋中。 每个口袋单元包括一个接收器,用于检测唯一的用户代码和启用显示器的装置,例如具有单列热打印元件列的非冲击型热敏打印机,以及用于使热敏记录带超过 打印元素。 这种口袋打印机的同步由用户代码和消息的格式控制,每个数据列的末尾都有空白处,以使打印元件根据列数据被加热,然后记录磁带提前 一列宽。 还公开了具有非打印的视觉消息显示的接收机。