Patent ID: 6728533
Filing Date: 2004-04-27
Classification: G04G,H04M

Abstract:
In a mobile phone having a clock display therein, wherein the mobile phone is associated with a home service area network; is in wireless communication with a base station located in a time zone having a current local time (CLT), and wherein the base station transmits a control signal having carried therein at least a universal coordinated time (UCT) signal, a system identification (SID) signal, a network identification (NID) signals, a CLT signal, and a daylight savings time (DST) flag, wherein the mobile phone is transportable to be in wireless communications with another base station in another time zone, and wherein, upon securing communications with a base station, the phone synchronizes its internal clock to the CLT of the base station; a clock comprising:a selection mechanism for use by a user to select a home time zone (HTZ), and to select a displayed time on the clock display from the group of displayed times consisting of CLT and HTZ; and a displayed time calculating mechanism which determines the time displayed on the clock display as a function of the CLT and the HTZ; wherein the phone further includes a home time zone setting mechanism to set automatically the home time zone to the home system of the phone.