Abstract: A method uses an electromagnetic navigation system, including a number of field transmitters and at least one receiver. The method includes receiving a field signal from the at least one receiver, and the field signal includes a number of different frequencies corresponding to each of the field transmitters. The received field signal is multiplied by a synchronization signal using a frequency-division multiplexing scheme, and the received field signal is integrated over a predetermined sampling interval and converted into an integrated signal having only a desired signal based on the synchronization signal. The integrated signal is outputted for subsequent processing of the electromagnetic navigation system.

Abstract: Secured communications between patient portable communicators (PPC) and a central authority (CA) via an unsecured network are implemented using software implemented by a communications device. The communications device provides for detecting, using a multiplicity of disparate communication protocols, presence of entities requesting a network connection and determining whether or not each of the entities is a PPC, establishing, only for the entities determined to be PPCs, a connection to the CA via the unsecured network using the disparate communication protocols, authenticating only the PPCs to the CA, and facilitating communication of PPC data between the PPCs and the CA via the communications device and the unsecured network upon successful PPC authentication. The PPC data comprises at least some patient implantable medical device data acquired by the PPCs.

Abstract: Secured communications between patient portable communicators (PPC) and a central authority (CA) via an unsecured network are implemented using software implemented by a communications device. The communications device provides for detecting, using a multiplicity of disparate communication protocols, presence of entities requesting a network connection and determining whether or not each of the entities is a PPC, establishing, only for the entities determined to be PPCs, a connection to the CA via the unsecured network using the disparate communication protocols, authenticating only the PPCs to the CA, and facilitating communication of PPC data between the PPCs and the CA via the communications device and the unsecured network upon successful PPC authentication. The PPC data comprises at least some patient implantable medical device data acquired by the PPCs.

Abstract: Secured communications between patient portable communicators (PPC) and a central authority (CA) via an unsecured network are implemented using software implemented by a communications device. The communications device provides for detecting, using a multiplicity of disparate communication protocols, presence of entities requesting a network connection and determining whether or not each of the entities is a PPC, establishing, only for the entities determined to be PPCs, a connection to the CA via the unsecured network using the disparate communication protocols, authenticating only the PPCs to the CA, and facilitating communication of PPC data between the PPCs and the CA via the communications device and the unsecured network upon successful PPC authentication. The PPC data comprises at least some patient implantable medical device data acquired by the PPCs.

Abstract: Secured communications between patient portable communicators (PPC) and a central authority (CA) via an unsecured network are implemented using software implemented by a communications device. The communications device provides for detecting, using a multiplicity of disparate communication protocols, presence of entities requesting a network connection and determining whether or not each of the entities is a PPC, establishing, only for the entities determined to be PPCs, a connection to the CA via the unsecured network using the disparate communication protocols, authenticating only the PPCs to the CA, and facilitating communication of PPC data between the PPCs and the CA via the communications device and the unsecured network upon successful PPC authentication. The PPC data comprises at least some patient implantable medical device data acquired by the PPCs.