초록 ▼

A personal alarm system remote unit (602) includes a navigational receiver (606) for receiving navigational information, a demodulator (608) for demodulating the received navigational information, timing circuits (610) for providing precise time-of-day information, a manually operated switch definin

A personal alarm system remote unit (602) includes a navigational receiver (606) for receiving navigational information, a demodulator (608) for demodulating the received navigational information, timing circuits (610) for providing precise time-of-day information, a manually operated switch defining a panic button and having an output signal defining a switch status wherein operation of the panic button produces a change in the switch status, and a radio transmitter (614) for transmitting the demodulated navigational information, the precise time-of-day information, and the switch status. Additional embodiments define remote units for a man-over-board system, an invisible fence system, and a weather alarm system.

대표청구항 ▼

[What is claimed is:] [12.]radio transmitting means and radio receiving means permitting two-way radio communication;at least one sensor means for detecting a personal hazard, the transmitting means being responsive for communicating a detected personal hazard;the radio transmitting means being able

[What is claimed is:] [12.]radio transmitting means and radio receiving means permitting two-way radio communication;at least one sensor means for detecting a personal hazard, the transmitting means being responsive for communicating a detected personal hazard;the radio transmitting means being able to transmit at more than one power level and defining a higher power level;means for enabling transmission at the higher power level when a personal hazard is detected; andmeans for enabling transmission at the higher power level when a transmit-at-high power command is received via the radio receiving means.