Patent ID: 7283789

Claim:
A method for transmitting wireless data using an adaptive frequency selection, the method being used in a device which includes a master and a slave and locally transmits wireless data in a frequency-changeable manner, the method comprising the steps of: setting up a setup channel for data transmission; the master and the slave transmitting data through the setup channel at a first channel frequency; checking whether there is channel interference in the setup channel; checking whether a replacement channel is stored if channel interference within a recoverable range occurs within the setup channel; where no replacement channel is stored, setting a channel having a second frequency different from the first frequency as a temporary replacement channel; and requesting the slave to change the first channel frequency to the second channel frequency; transmitting data through the temporary replacement channel if a response to the request for changing channel frequencies is received from the slave; storing the temporary replacement channel as a replacement channel if there is no channel interference in the temporary replacement channel; checking whether there is interference in the replacement channel and the setup channel while alternately transmitting data through the setup channel and the replacement channels; and when there is continuous channel interference in the setup channel, transmitting data after changing the stored replacement data to a new setup channel.