MULTI-LEVEL RADIO-FREQUENCY COMMUNICATION SYSTEM
    5.
    发明授权
    MULTI-LEVEL RADIO-FREQUENCY COMMUNICATION SYSTEM 失效
    MULTINIVEAURADIOKOMMUNIKATIONSSYSTEM

    公开(公告)号:EP0494298B1

    公开(公告)日:1997-06-04

    申请号:EP91914315.6

    申请日:1991-07-24

    IPC分类号: H04B7/15 G07G1/14 G08C17/00

    摘要: A digital data communication system enables host computer to communicate with a great number of data terminals having specified functions. Communication from the host computer proceeds through a medium or long distance, high power transceiver and through a multiplex system to one of a number of portable communication devices. The communication devices preferably contain internal power supplies, such as rechargeable NiCad battery packs. The devices may be carried on a person's belt, or may be mounted within or on a service vehicle, for example, a forklift truck for use in warehouse operations or a merchandise delivery route vehicle. The communication devices are adapted to function as communication relay devices between the host computer and selected ones of the data terminals. Each communication device includes a first type, low power transceiver to communicate within a first channel and at a low power transmission level with a selected number of the data terminals which also feature such first type transceivers. Each communication device further includes a high power transceiver to communicate within a second channel with the transceiver of the host computer. A microprocessor operated address controller allows the communication device to control low power communication among the data terminals by receiving and re-transmitting locally directed communications. The controller and the controlling protocol further relays data messages between the low power communication level and host computer. In operation the device receives data messages on one of the transceivers and transmits them on the other. The communication device further may contain sufficient memory capacity to permit periodic batch type data transmission between the host computer and the communication device. The ability to switch from a high power, high precision and high cost transmission system to a low power, low precision and low cost transmission system at the level at which a great number of data terminal devices are used provides system flexibility at a reasonable cost.

    摘要翻译: 数字数据通信系统使得主机能够与具有指定功能的大量数据终端进行通信。 来自主计算机的通信通过中长距离,大功率收发器和通过多路复用系统进行到多个便携式通信设备之一。 通信设备优选地包含诸如可充电NiCad电池组的内部电源。 这些装置可以携带在人的皮带上,或者可以安装在服务车辆内或其上,例如用于仓库操作的叉车或商品运送路线车辆。 通信设备适于在主计算机和所选择的数据终端之间用作通信中继设备。 每个通信设备包括第一类型的低功率收发器,用于在第一通道内以低功率传输级别与选定数量的数据终端进行通信,该数据终端还具有这种第一类型的收发器。 每个通信设备还包括大功率收发器,以在第二信道内与主计算机的收发信机进行通信。 微处理器操作的地址控制器允许通信设备通过接收和重新发送本地定向的通信来控制数据终端之间的低功率通信。 控制器和控制协议进一步在低功率通信级别和主机之间中继数据消息。 在操作中,设备在其中一个收发器上接收数据消息,并在另一个收发器上传送它们。 通信设备还可以包含足够的存储器容量以允许主计算机和通信设备之间的周期性批量类型数据传输。 从大功率,高精度和高成本传输系统切换到低功耗,低精度和低成本传输系统的能力,在大量数据终端设备的使用水平上,以合理的成本提供了系统灵活性。

    HAND-HELD DATA CAPTURE SYSTEM WITH INTERCHANGEABLE MODULES AND INTERACTIVE CONTROL CIRCUITS
    6.
    发明授权
    HAND-HELD DATA CAPTURE SYSTEM WITH INTERCHANGEABLE MODULES AND INTERACTIVE CONTROL CIRCUITS 失效
    TRAGBARES DATENERFASSUNGSSYSTEM MIT AUSTAUSCHBAREN MODULEN UND INTERKKENTE STEUERSCHALTUNGEN

    公开(公告)号:EP0573567B1

    公开(公告)日:2000-05-17

    申请号:EP92907710.5

    申请日:1992-02-25

    IPC分类号: G06K7/10 G06K17/00

    摘要: A battery powered, portable, hand-held data terminal (10) of modular structure includes a base module (16, 136) with a keyboard (18) and a display screen (19) and their respective electrical functions (167, 164). A data and communications module may be selected from a number of different data and communications modules (48, 55, 75, 135) each having different types of data communications transceiver, or including in addition data collection devices, such as shelf label readers or bar code readers (76). The base module (16, 136) includes a microprocessor-controlled data communications and control interface having a predetermined protocol. To adapt the various type of data and communications modules for selection of any one thereof to become attached to the base module and function therewith, each of the data and communications modules includes a microprocessor (125, 144) operable to function as an emulator to interact with the microprocessor of the base module (16, 136).

    摘要翻译: 具有模块化结构的电池供电的便携式手持式数据终端(10)包括具有键盘(18)和显示屏(19)的基本模块(16,136)及其各自的电功能(167,164)。 数据和通信模块可以从多个不同数据和通信模块(48,55,75,1005)中选择,每个数据和通信模块具有不同类型的数据通信收发器,或者还包括数据采集设备,例如货架标签读取器或条 代码阅读器(76)。 基本模块(16,136)包括具有预定协议的微处理器控制的数据通信和控制接口。 为了适应各种类型的数据和通信模块以选择其中任何一个,以附加到基本模块并且与其一起发挥作用,每个数据和通信模块包括微处理器(125,144),其可操作以用作仿真器以进行交互 与基本模块(16,136)的微处理器连接。

    MULTI-LEVEL RADIO-FREQUENCY COMMUNICATION SYSTEM
    7.
    发明公开
    MULTI-LEVEL RADIO-FREQUENCY COMMUNICATION SYSTEM 失效
    MULTINIVEAURADIOKOMMUNIKATIONSSYSTEM。

    公开(公告)号:EP0494298A1

    公开(公告)日:1992-07-15

    申请号:EP91914315.0

    申请日:1991-07-24

    摘要: A digital data communication system enables host computer to communicate with a great number of data terminals having specified functions. Communication from the host computer proceeds through a medium or long distance, high power transceiver and through a multiplex system to one of a number of portable communication devices. The communication devices preferably contain internal power supplies, such as rechargeable NiCad battery packs. The devices may be carried on a person's belt, or may be mounted within or on a service vehicle, for example, a forklift truck for use in warehouse operations or a merchandise delivery route vehicle. The communication devices are adapted to function as communication relay devices between the host computer and selected ones of the data terminals. Each communication device includes a first type, low power transceiver to communicate within a first channel and at a low power transmission level with a selected number of the data terminals which also feature such first type transceivers. Each communication device further includes a high power transceiver to communicate within a second channel with the transceiver of the host computer. A microprocessor operated address controller allows the communication device to control low power communication among the data terminals by receiving and re-transmitting locally directed communications. The controller and the controlling protocol further relays data messages between the low power communication level and host computer. In operation the device receives data messages on one of the transceivers and transmits them on the other. The communication device further may contain sufficient memory capacity to permit periodic batch type data transmission between the host computer and the communication device. The ability to switch from a high power, high precision and high cost transmission system to a low power, low precision and low cost transmission system at the level at which a great number of data terminal devices are used provides system flexibility at a reasonable cost.

    摘要翻译: 数字数据通信系统使得主机能够与具有指定功能的大量数据终端进行通信。 来自主计算机的通信通过中长距离,大功率收发器和通过多路复用系统进行到多个便携式通信设备之一。 通信设备优选地包含诸如可充电NiCad电池组的内部电源。 这些装置可以携带在人的皮带上,或者可以安装在服务车辆内或其上,例如用于仓库操作的叉车或商品运送路线车辆。 通信设备适于在主计算机和所选择的数据终端之间用作通信中继设备。 每个通信设备包括第一类型的低功率收发器,用于在第一通道内以低功率传输级别与选定数量的数据终端进行通信,该数据终端还具有这种第一类型的收发器。 每个通信设备还包括大功率收发器,以在第二信道内与主计算机的收发器进行通信。 微处理器操作的地址控制器允许通信设备通过接收和重新发送本地定向的通信来控制数据终端之间的低功率通信。 控制器和控制协议进一步在低功率通信级别和主机之间中继数据消息。 在操作中,设备在其中一个收发器上接收数据消息,并在另一个收发器上传送它们。 通信设备还可以包含足够的存储器容量以允许主计算机和通信设备之间的周期性批量类型数据传输。 从大功率,高精度和高成本传输系统切换到低功耗,低精度和低成本传输系统的能力,在大量数据终端设备的使用水平上,以合理的成本提供了系统灵活性。