Automatic time setting method of asynchronous mobile communication terminal
AssigneeLG Electronics Inc.
InventorIn-Bok Chung
Life of this patent
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Abstract
In an automatic time setting method of an asynchronous mobile communication terminal, when a user moves from a first area to a second area in a GSM/GPRS network, a time difference between the two areas is calculated by using LAIs or RAIs of the first and second areas, and a time of the terminal is reset according to the calculated time difference. The asynchronous mobile communication terminal includes a RTC (real time clock) circuit for generating time information; a memory for storing time difference information between areas; and a CPU for reading a time difference corresponding to area information of a first and a second areas from the memory when a user moves from the first area to the second area and controlling the RTC circuit.
Claims21
An asynchronous mobile communication terminal, comprising:
- a RTC (real time clock) circuit for generating time information;
- a memory for storing time difference information between areas;
- and
- a CPU for reading a time difference corresponding to area information of a first area and a second area from the memory when a user moves from the first area to the second area and controlling the RTC circuit.
An asynchronous mobile communication terminal, comprising:
- a RTC (real time clock) circuit for generating time information;
- a time difference table for storing time difference information between areas;
- a CPU for reading a time difference corresponding to a LAI (location area identification) or a RAI (routing area identification) of a first area and a second area from the time table when a user moves from the first area to the second area in a certain network and controlling the RTC circuit;
- and
- a LCD for displaying the time information generated by the RTC circuit.
A time setting method of an asynchronous mobile communication terminal, comprising:
- requesting area information of a second area to a base station when a user moves from a first area to the second area in an asynchronous network;
- storing the area information of the second area provided from the base station in a time difference table;
- reading a time difference corresponding to the area information of the first and second areas from the time difference table;
- and
- resetting a time of the terminal by using the read time difference.
Dependencies are inferred from the claim text.