Patent ID: 7499444

Claim:
A method for clock synchronization of a plurality of wireless devices that are in communication with respective nodes, wherein at least some of the respective nodes are attached to different buses, comprising: synchronizing an internal time base of a wireless master device attached to a first bus by receiving a Software Beacon Alert that indicates a time of a subsequent transmission and applying the Software Beacon Alert to a first phase-lock loop circuit associated with the master device to create a filtered Software Beacon Alert, wherein said first phase-lock loop circuit uses a phase detector with an asymmetrical gain about zero error; receiving a timing message transmitted from the master device on the first bus to a second phase-lock loop circuit associated with at least one slave device attached to a second bus; and providing the timing message from the second phase-locked loop to said at least one slave device attached to said a second bus before the master device receives a subsequent Software Beacon Alert message, so that the wireless master device and the at least one slave device are synchronized.