Patent ID: 7522933
Filing Date: 2009-04-21
Classification: H04W

Abstract:
1. A communicating method in a Bluetooth system operating as a master to a first external device, the method comprising: receiving a communication request signal from a second external device while the Bluetooth system operates as the master to the first external device; scanning the received communication request signal to convert the operation of the Bluetooth system from the master to the first external device into a slave to the second external device; transmitting a mode-converting request signal to the second external device such that a link state of the Bluetooth system with the second external device is converted into a sniff mode prior to converting the operation of the Bluetooth system from the slave to the second external device into the master to the first external device; receiving a mode-converting approval signal from the second external device in response to the mode-converting request signal; converting the link state of the Bluetooth system with the second external device into the sniff mode; judging whether it is an expiring time of the sniff mode set between the Bluetooth system and the second external device when the Bluetooth system operates as the master to the first external device; and if it is the expiring time of the sniff mode set between the Bluetooth system and the second external device, converting the operation of the Bluetooth system from the master to the first external device into the slave to the second external device.