Patent ID: 7315258

Claim:
A system for programming a code for a wireless short range radio frequency (RF) emergency call transmitter used for determining the location of a resident during an emergency within a monitored area having a plurality of residences or rooms comprising: an emergency call transmitter comprising a sealed housing configured as a wireless pendant to be worn by a user having a receive coil and processor positioned within the housing that processes a transmitter code identifying the emergency call transmitter, and RF transmitter in the housing that is resident activated during an emergency and transmits a help request as the transmitter code in a single RF transmission indicating the identity of the emergency call transmitter, and further comprising a receiver section that receives an infrared or acoustic signal containing a location code received from a location monitor identifying a location, and in response transmitting an RF signal containing the location code to a emergency call receiver, said processor performing level analysis to discriminate comparatively high level signals from a location monitor within a residence or room in which it is located from comparatively low level signals from nearby residences or rooms; a programming fixture having a transmit coil and a receptacle configured for receiving the housing of the emergency call transmitter such that when the emergency call transmitter is received within the receptacle, the coils within the emergency call transmitter and the programming fixture form an air-core transformer and are aligned in proximity to each other, and a processor operative with the transmit coil for keying an AC signal applied to the transmit coil and imparting a data stream from the receive coil to the processor and programming a new code within the processor of the emergency call transmitter; and wherein the emergency call transmitter is normally in a sleep mode and activated into a wake-up mode when data is received from the programming fixture and from the receive coil for programming a code.