公开(公告)号：US20090305660A1

公开(公告)日：2009-12-10

申请号：US12512037

申请日：2009-07-30

Applicant: Feng-Yu Liu

Inventor： Feng-Yu Liu

IPC: H04M11/04

CPC classification number: H04H20/59 ,  H04H60/13 ,  H04H60/16 ,  H04H60/51 ,  H04H2201/70

Abstract: Disclosed is a system for conveying and announcing an emergency message with radios, which provides a broadcast system to be set up in a building, a community, or a public place such as an organization or a school. An emergency receiving device combines at least one radio receiver unit to receive an emergency event message transmitted from a public channel or an on-site channel in radio frequency and incorporates a speech amplifier to amplify and broadcast a voice signal to announce the emergency message to people within the area.

Abstract translation: 公开了一种用于传送和通知具有无线电的紧急消息的系统，其提供要在建筑物，社区或公共场所（例如组织或学校）中建立的广播系统。 紧急接收装置组合至少一个无线电接收机单元以接收从公共频道或射频现场频道发送的紧急事件消息，并结合语音放大器来放大和广播语音信号以向人们通报紧急消息 在该地区内。

公开(公告)号：US20090208036A1

公开(公告)日：2009-08-20

申请号：US12031707

申请日：2008-02-15

Applicant: Feng-Yu Liu

Inventor： Feng-Yu Liu

IPC: H03F21/00 ,  H04M1/00

CPC classification number: H04M19/04

Abstract: A tone alert amplifier includes a pickup coil, a filter unit, a converting unit, a micro-control unit, an amplifier, and a loud speaker unit. The pickup coil senses a magnetic signal to induce an input signal, and the filter unit performs a specific filtering operation upon the input signal to generate a filtered input signal. Next, the converting unit converts the filtered input signal into the digital signal, and the micro-control unit receives the digital signal to generate at least one output signal. Then the amplifier amplifies the output signal to generate an audio signal, and finally, the speaker unit outputs the audio signal.

Abstract translation: 音调警报放大器包括拾取线圈，滤波器单元，转换单元，微控制单元，放大器和扬声器单元。 拾取线圈感测磁信号以感应输入信号，并且滤波器单元对输入信号执行特定滤波操作以产生滤波后的输入信号。 接下来，转换单元将滤波的输入信号转换为数字信号，并且微控制单元接收数字信号以产生至少一个输出信号。 然后放大器放大输出信号以产生音频信号，最后扬声器单元输出音频信号。