Patent ID: 6587694
Filing Date: 2003-07-01
Classification: H04M

Abstract:
A method of synchronizing a clock of a first wireless device with a clock of a second wireless device, comprising:electrically coupling said first wireless device to said second wireless device; providing a start transition and an end transition in a charge signal to indicate a start of said time period and an end of said time period, respectively, said charge signal being provided by said second wireless device to charge a power source of said first wireless device while said first wireless device is electrically coupled to said second wireless device; counting pulses of said clock of said first wireless device and pulses of said clock of said second wireless device during a time period indicated by said start transition and said end transition; and adjusting a frequency of one of said clock of said first wireless device and said clock of said second wireless device based on said counted pulses of said clock of said first wireless device and said counted pulses of said clock of said second wireless device.