-
公开(公告)号：US4879756A
公开(公告)日：1989-11-07
申请号：US141242
申请日：1988-01-06
CPC分类号： G06K17/0022 , H04L27/18 , H04L5/1492 , G09G2380/04
摘要： The invention comprises a low power broadcast system that is applicable especially to the so-called "electronic shelf" for retail stores, wherein the shelf edge carries price displaying modules that can be addressed and controlled from a central computer operated station. The system also permits the modules to broadcast back to the central station to confirm safe receipt of data and to give information as to stock levels, etc. A broadcast system avoids the need for wiring so that location changes are facilitated. To overcome the extremely noisy environment and to conserve power consumption, and hence battery life, the system employs a low frequency (132 kHz) reference carrier transmitted by the base station in discrete segmented packages, each of which frames a base data word transmitted by the base station and a corresponding module data word transmitted by the module a fixed period after the end of the base word; the base receiver then has precise time information for receipt of the module word and can "look" for it among the noise. The carrier received by the module is divided and the lower frequency used to demodulate the information-carrying transmission from the base station of the same frequency, avoiding the need for a phase locked loop detector; this lower frequency is also used for the module transmission. The module employs an air-cored loop antenna coil for the lower frequency and a ferrite-cored loop antenna for the higher reference frequency, while the store antenna is segmented for selection of the group of modules to be addressed; the antenna contacts the metal shelving to provide electromagnetic coupling thereto. Each module contains a microprocessor which controls the operation. Each module has "concealed" buttons which can be enabled and used to insert data to be transmitted therefrom. A charging circuit can be used as the power source employing the received RF carrier energy.
摘要翻译： 本发明包括一种低功率广播系统，其特别适用于零售商店的所谓“电子货架”，其中货架边缘携带可从中央计算机操作的站址寻址和控制的价格显示模块。 该系统还允许模块广播回到中央站，以确认数据的安全接收并提供关于库存等级的信息等。广播系统避免了对布线的需要，从而便于位置改变。 为了克服极其嘈杂的环境并节省电力消耗，并因此节省电池寿命，该系统采用由基站在离散分段封装中传输的低频（132kHz）参考载波，其中每个包含由 基站和相应的模块数据字在模块结束后固定的时间段发送; 基地接收机然后具有用于接收模块字的精确时间信息，并且可以在噪声中“寻找”它。 由模块接收的载波被划分，较低的频率用于解调来自相同频率的基站的信息传输传输，避免了对锁相环检测器的需要; 该较低频率也用于模块传输。 该模块采用较低频率的空心环形天线线圈和用于更高参考频率的铁氧体磁芯环形天线，而存储天线被分段以选择要寻址的模块组; 天线接触金属搁架以提供电磁耦合。 每个模块都包含一个控制操作的微处理器。 每个模块都具有“隐藏”按钮，可以启用并将其用于插入要传输的数据。 充电电路可以用作采用所接收的RF载波能量的电源。
-
公开(公告)号：US4937586A
公开(公告)日：1990-06-26
申请号：US141246
申请日：1988-01-06
CPC分类号： G06K17/0022 , H04L27/18 , H04L5/1492 , G09G2370/16 , G09G2380/04
摘要： The invention comprises a low power broadcast system that is applicable especially to the so-called "electronic shelf" for retail stores, wherein the shelf edge carries price displaying modules that can be addressed and controlled from a central computer operated station. The system also permits the modules to broadcast back to the central station to confirm safe receipt of data and to give information as to stock levels, etc. A broadcast system avoids the need for wiring so that location changes are facilitated. To overcome the extremely noisy environment and to conserve power consumption, and hence battery life, the system employs a low frequency (132 kHz) reference carrier transmitted by the base station in discrete segmented packages, each of which frames a base data word transmitted by the base station and a corresponding module data word transmitted by the module a fixed period after the end of the base word; the base receiver than has precise time information for receipt of the module word and can "look" for it among the noise. The carrier received by the module is divided and the lower frequency used to demodulate the information-carrying transmission from the base station of the same frequency, avoiding the need for a phase locked loop detector; this lower frequency is also used for the module transmission. The module employs an air-cored loop antenna coil for the lower frequency and a ferrite-cored loop antenna for the higher reference frequency, while the store antenna is segmented for selection of the group of modules to be addressed; the antenna contacts the metal shelving to provide electromagnetic coupling thereto. Each module contains a microprocessor which controls the operation. Each module has "concealed" buttons which can be enabled and used to insert data to be transmitted therefrom. A charging circuit can be used as the power source employing the received RF carrier energy.
摘要翻译： 本发明包括一种低功率广播系统，其特别适用于零售商店的所谓“电子货架”，其中货架边缘携带可从中央计算机操作的站址寻址和控制的价格显示模块。 该系统还允许模块广播回到中央站，以确认数据的安全接收并提供关于库存等级的信息等。广播系统避免了对布线的需要，从而便于位置改变。 为了克服极其嘈杂的环境并节省电力消耗，并因此节省电池寿命，该系统采用由基站在离散分段封装中传输的低频（132kHz）参考载波，其中每个包含由 基站和相应的模块数据字在模块结束后固定的时间段发送; 基本接收机具有用于接收模块字的精确时间信息，并且可以在噪声中“查找”它。 由模块接收的载波被划分，较低的频率用于解调来自相同频率的基站的信息传输传输，避免了对锁相环检测器的需要; 该较低频率也用于模块传输。 该模块采用较低频率的空心环形天线线圈和用于更高参考频率的铁氧体磁芯环形天线，而存储天线被分段以选择要寻址的模块组; 天线接触金属搁架以提供电磁耦合。 每个模块都包含一个控制操作的微处理器。 每个模块都具有“隐藏”按钮，可以启用并将其用于插入要传输的数据。 充电电路可以用作采用所接收的RF载波能量的电源。
-
公开(公告)号：US4821291A
公开(公告)日：1989-04-11
申请号：US909548
申请日：1986-09-22
CPC分类号： H04L27/18 , G06K17/0022 , H04L5/1492 , G09G2380/04
摘要： The invention comprises a low power broadcast system that is applicable especially to the so-called "electronic shelf" for retail stores, wherein the shelf edge carries price displaying modules that can be addressed and controlled from a central computer operated station. The system also permits the modules to broadcast back to the central station to confirm safe receipt of data and to give information as to stock levels, etc. A broadcast system avoids the need for wiring so that location changes are facilitated. To overcome the extremely noisy environment and to conserve power consumption, and hence battery life, the system employs a low frequency (132 kHz) reference carrier transmitted by the base station in discrete segmented packages, each of which frames a base data word transmitted by the base station and a corresponding module data word transmitted by the module a fixed period after the end of the base word; the base receiver then has precise time information for receipt of the module word and can "look" for it among the noise. The carrier received by the module is divided and the lower frequency used to demodulate the information-carrying transmission from the base station of the same frequency, avoiding the need for a phase locked loop detector; this lower frequency is also used for the module transmission. The module employs an air-cored loop antenna coil for the lower frequency and a ferrite-cored loop antenna for the higher reference frequency, while the store antenna is segmented for selection of the group of modules to be addressed; the antenna contacts the metal shelving to provide electromagnetic coupling thereto. Each module contains a microprocessor which controls the operation. Each module has "concealed" buttons which can be enabled and used to insert data to be transmitted therefrom. A charging circuit can be used as the power source employing the received RF carrier energy.
摘要翻译： 本发明包括一种低功率广播系统，其特别适用于零售商店的所谓“电子货架”，其中货架边缘携带可从中央计算机操作的站址寻址和控制的价格显示模块。 该系统还允许模块广播回到中央站，以确认数据的安全接收并提供关于库存等级的信息等。广播系统避免了对布线的需要，从而便于位置改变。 为了克服极其嘈杂的环境并节省电力消耗，并因此节省电池寿命，该系统采用由基站在离散分段封装中传输的低频（132kHz）参考载波，其中每个包含由 基站和相应的模块数据字在模块结束后固定的时间段发送; 基地接收机然后具有用于接收模块字的精确时间信息，并且可以在噪声中“寻找”它。 由模块接收的载波被划分，较低的频率用于解调来自相同频率的基站的信息传输传输，避免了对锁相环检测器的需要; 该较低频率也用于模块传输。 该模块采用较低频率的空心环形天线线圈和用于更高参考频率的铁氧体磁芯环形天线，而存储天线被分段以选择要寻址的模块组; 天线接触金属搁架以提供电磁耦合。 每个模块都包含一个控制操作的微处理器。 每个模块都具有“隐藏”按钮，可以启用并将其用于插入要传输的数据。 充电电路可以用作采用所接收的RF载波能量的电源。
-
4.发明授权Wireless velocity detector for a bicycle having a rotating AC magnetic field and receiver coils 失效用于具有旋转交流磁场和接收线圈的自行车的无线速度检测器
公开(公告)号：US5177432A
公开(公告)日：1993-01-05
申请号：US708602
申请日：1991-05-31
CPC分类号： B62J99/00 , G01C22/002 , G01P1/00 , G01P3/48 , B62J2099/0013 , B62J2099/0026 , B62J2099/0033
摘要： A wireless velocity detector for a bicycle includes a coil mounted on the wheel hub of the bicycle which generates a rotating magnetic field as the wheel rotates, a receiver mounted on the handlebars that includes a pair of coils that sense variations in the strength of the rotating field as the bicycle moves and generates signals in response to the field variations and a microprocessor which converts the signals into information related to the movement of the bicycle, e.g. speed and distance. A liquid crystal display is used to display the information to the cyclist.
摘要翻译： 用于自行车的无线速度检测器包括安装在自行车的轮毂上的线圈，其在车轮旋转时产生旋转磁场;安装在车把上的接收器，其包括一对线圈，其感测旋转强度的变化 随着自行车移动并响应于场变化而产生信号，以及将信号转换成与自行车的运动有关的信息的微处理器，例如 速度和距离。 使用液晶显示器将信息显示给骑车人。
-
公开(公告)号：US4792796A
公开(公告)日：1988-12-20
申请号：US13025
申请日：1987-02-10
CPC分类号： G08B13/14
摘要： In electronic alarm apparatus for monitoring the presence or absence of objects within a given area, a transmitter attachable to an object, a shift register for storing a digital identification code, and an electronic circuit including a time delay circuit for periodically transmitting the digital identification code as a radio frequency signal; a monitor including a logic timing circuit for activating a receiver for receiving the radio frequency signal, a check circuit for comparing the received signal with a stored identification code and audio logic circuit and liquid crystal display for providing audio and visual indications upon failure of receiving a given number of consecutive transmissions from a given transmitter; the transmitter further including tamper switch and tamper flag logic circuit for changing the digital identification code stored in the shift register upon premature removal of the transmitter from the object.
摘要翻译： 在用于监视给定区域内的物体的存在或不存在的电子报警装置中，可附接到物体的发射器，用于存储数字识别码的移位寄存器和包括用于周期性地发送数字识别码的时间延迟电路的电子电路 作为射频信号; 监视器，包括用于激活用于接收射频信号的接收机的逻辑定时电路，用于将接收到的信号与存储的识别码和音频逻辑电路进行比较的检查电路和用于在接收到无线电频率信号失败时提供音频和视觉指示的液晶显示器 给定发射机的连续传输次数; 所述发射机还包括防拆开关和篡改标志逻辑电路，用于在从所述物体过早移除所述发射器时改变存储在所述移位寄存器中的数字识别码。
-
-
-
-
搜索结果
5 条记录 (耗时 0.019 秒)
