Method of operation of a radio system
First Claim
1. A method of operating a radio system having a transmitter unit and a receiver unit, the method comprising the steps ofat the transmitter unit, transmitting repeatedly for a predetermined period of time, an initial portion only of the address, followed by a remainder portion of the address, followed by a message, andat the receiver unit, switching from a dormant, low power mode to a receive mode after a period of time in the dormant mode not exceeding the predetermined period of time,in the receive mode, receiving address information,comparing the address information bit by bit with a predetermined address stored at the receiver unit,reverting to the dormant mode as soon as a negative comparison is made, to a predetermined degree of non-correlation, between address information received and the predetermined address, andremaining in the receive mode in the event of a correspondence between the received address and the stored address information until the message is received and thereafter returning to the dormant mode.
1 Assignment
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Accused Products
Abstract
A method is described of operating a radio system having a transmitter unit (10) and a receiver unit (11). At the transmitter unit, at least a potion (50) of an address is transmitted repeatedly for a predetermined period of time (Tw), followed by a message. The receiver unit switches from a dormant, low power mode to a receive mode after a period of time in the dormant mode not exceeding the predetermined period of time (Tw). In the receive mode address information is received and compared bit by bit with a predetermined address stored at the receiver unit. The receiver revels to the dormant mode as soon as a negative comparison is made, to a predetermined degree of non-correlation, between address information received and the predetermined address, thereby saving battery power.
44 Citations
6 Claims
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1. A method of operating a radio system having a transmitter unit and a receiver unit, the method comprising the steps of
at the transmitter unit, transmitting repeatedly for a predetermined period of time, an initial portion only of the address, followed by a remainder portion of the address, followed by a message, and at the receiver unit, switching from a dormant, low power mode to a receive mode after a period of time in the dormant mode not exceeding the predetermined period of time, in the receive mode, receiving address information, comparing the address information bit by bit with a predetermined address stored at the receiver unit, reverting to the dormant mode as soon as a negative comparison is made, to a predetermined degree of non-correlation, between address information received and the predetermined address, and remaining in the receive mode in the event of a correspondence between the received address and the stored address information until the message is received and thereafter returning to the dormant mode.
Specification