公开(公告)号：US07187936B2

公开(公告)日：2007-03-06

申请号：US11025865

申请日：2004-12-21

申请人： James F. Allyn ,  John D. Miller ,  Sheng-Hui J. Chu

发明人： James F. Allyn ,  John D. Miller ,  Sheng-Hui J. Chu

IPC分类号： H04Q7/20 ,  H04Q11/00 ,  H04M1/38 ,  G08B13/14

CPC分类号： G08B21/023 ,  G08B13/1427

摘要： A radio frequency transmission device including electronic circuitry. A digital logic circuit is alternate-able from a sleep mode to an active mode after a pre-determined time period, and back to the sleep mode immediately after transmission of a digital signal. The digital signal includes a unique and pre-determined sequence of fixed length pulses routed to a transmission circuit to transmit a radio signal in a specific frequency range. An output display signal from the output circuitry is displayed with an LED. An input circuitry is manually activated. A radio frequency signal is received with a receiver circuitry, sensed to determine if the received signal has a compatible characteristic of an expected signal. The radio frequency signal is converted into a digital form and sent to the microprocessor. Every associated transmitter device is tracked with a counter maintained by a microprocessor. Personnel, belongings and pets can be tracked with this device.

摘要翻译： 一种包括电子电路的射频传输装置。 数字逻辑电路在预定时间段之后从睡眠模式切换到活动模式，并且在数字信号传输之后立即返回睡眠模式。 数字信号包括路由到传输电路以在特定频率范围内传输无线电信号的固定长度脉冲的唯一和预定序列。 来自输出电路的输出显示信号用LED显示。 手动启动输入电路。 用接收机电路接收射频信号，被检测以确定接收到的信号是否具有预期信号的兼容特性。 射频信号被转换为数字形式并发送到微处理器。 每个相关联的发射机设备都由微处理器维护的计数器跟踪。 人员，物品和宠物可以使用此设备进行跟踪。