Patent ID: 7835343
Filing Date: 2010-11-16
Classification: G08B,H04N

Abstract:
1. For use in a building-security system, a method for wireless communication between a control panel device and peripheral devices, each of the devices including a wireless communication circuit to effect wireless communications between the control panel device and the peripheral devices, the method comprising: to effect wireless communications between the control panel device and at least one of the peripheral devices, providing communication intervals to define communication therebetween, the communications intervals defined as a function of a selected one of multiple frequencies for communicating between the control panel device and said at least one peripheral device; communicating between the control panel device and said at least one peripheral device based on the communication intervals of at least said selected one of the multiple frequencies; reducing power consumption in at least one of the control panel device and said at least one peripheral device as a function of the communication intervals and said selected one of the multiple frequencies; synchronizing the control panel device and peripheral devices using periodic wireless communications and a local clock circuit for each of the control panel device and peripheral devices; calculating a transmission anticipation time from, transmitting in response to the transmission anticipation time and an expected activation time of the control panel device, wherein said at least one of the devices relies on a limited power source and the control panel device collects building-security data from the peripheral devices while mitigating power consumption from the limited power source.