Patent ID: 7098803

Claim:
A method of synchronizing a transmitter connected to a sensor producing a signal indicative of a characteristic of a user with a remotely located characteristic monitor, the method comprising: giving a unique ID code to the transmitter; and transmitting a message from the transmitter to the remotely located characteristic monitor in pseudo-randomly selected time windows based on the unique ID code of the transmitter, wherein the pseudo-randomly selected time windows are established by utilizing the unique ID code of the transmitter to set up a table of transmission time windows that defines an order in which the transmitter will transmit the message; wherein the message includes a message count number which indicates where in the sequence of time windows the transmitter is currently transmitting; setting up a corresponding table of time windows in the characteristic monitor utilizing the unique ID code of the transmitter; synchronizing the characteristic monitor with the transmitter using the received message count number to locate current position in the corresponding table of time windows; and determining when the characteristic monitor must be in a receive mode to acquire a next message.