发明授权
US09398619B1 Emergency alert notification and verification 有权
紧急警报通知和验证

Emergency alert notification and verification
摘要:
A device configured to determine whether it is outside a designated emergency alert area based on the number and/or frequency of received emergency alert system (EAS) signals. A communications network configured to map a location of the device with respect to the designated alert area and verify that the EAS alert signals were properly broadcast. The network may also be configured to transmit a signal to a second device indicating whether the device is outside the designated alert area. The network may further be configured to cause the EAS alert signals to be broadcast via a first transceiver serving at least a portion of the designated alert area and to cause non-emergency signals to be broadcast by a second transceiver serving at least a portion of an area outside of the designated alert area.
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