Patent ID: 7034890

Claim:
A system for updating a clock in an electronic device, comprising: a receiver system having an input for receiving a real time signal and having an output from which is provided digital information representative of the real time signal; an extraction module operatively coupled to the receiver system, the extraction module extracting at least a current time value from the digital information; an update module operatively coupled to the extraction module, the update module updating the clock in the electronic equipment when the current time value of the digital information differs from a current value of the clock in the electronic equipment; wherein the system further comprises a validating until that is operatively coupled between the extraction module and the update module, the validating unit comparing channel identification data derived from the digital information to time zone data in the electronic equipment, the time zone data being indicative of a time zone in which the electronic equipment is currently located; and wherein the clock is updated only when the comparison indicates that a station identified by the channel identification data is in the same time zone as the electronic equipment.