The present invention relates to a mobile terminal (1) for a wireless telecommunication system and a method providing accurate real time information in such a mobile terminal (1). The mobile terminal (1) comprises input means (3) for inputting basic time information (T.sub.0), memory means (4) for storing basic time information (T.sub.0) input via said input means (3), real time means (2, 5) for continuously providing real time information (T.sub.x) on the basis of low frequency oscillation signal and said basic time information (T.sub.0), and processing means (5) for computing a correction value (K) for correcting said real time information T.sub.x to obtain an accurate real time information (T.sub.acc) on the basis of an accurate time difference between a first accurate time information (T.sub.1) and a second accurate time information (T.sub.2) and a real time difference between a first real time information (T.sub.x1) and a second real information (T.sub.x2) from said real time means (2, 5).
Shifts in the apparent charge stored on a floating gate (or other charge storing element) of a non-volatile memory cell can occur because of the coupling of an electric field based on the charge stored in neighboring floating gates (or other neighboring charge storing elements). The problem occurs most pronouncedly between sets of adjacent memory cells that have been programmed at different times. To compensate for this coupling, the read process for a given memory cell will take into account the programmed state of a neighbor memory cell if the neighbor memory cell was programmed subsequent to the given memory cell. Techniques for determining whether the neighbor memory cell was programmed before or after the given memory cell are disclosed.
Shifts in the apparent charge stored on a floating gate (or other charge storing element) of a non-volatile memory cell can occur because of the coupling of an electric field based on the charge stored in neighboring floating gates (or other neighboring charge storing elements). The problem occurs most pronouncedly between sets of adjacent memory cells that have been programmed at different times. To compensate for this coupling, the read process for a given memory cell will take into account the programmed state of a neighbor memory cell if the neighbor memory cell was programmed subsequent to the given memory cell. Techniques for determining whether the neighbor memory cell was programmed before or after the given memory cell are disclosed.
A radio wave correction timepiece has an antenna 21 for receiving external radio information including time information consisting of external time data, a reception circuit 22, and a time counter 53 for producing internal time data. A control circuit 24 has a comparison circuit 54 for determining the difference between received external time data and internal time data, and outputting a difference data value. A reception information storage unit 71 stores at least a plurality of data sets, each consisting of received external time data and its resultant difference data value. A correction calculation unit 62 calculates an estimated correction value using the plurality of stored data sets, and the elapsed time from the last reception. An internal time correction control unit 61 corrects the internal time using the estimated correction value.
A local time adjusting method of a mobile communication terminal includes extending 6-bit local time offset contained in a sync channel message transmitted from a base station to a 7-bit local time offset to calculate an actual local time offset in a corresponding area; and substituting the calculated local time offset (extend_LTM_OFF) and time information to equation (SYS_TIME+(LP_SEC*12.5)+(extend_LTM_OFF*11250) to calculate local time of a current location. By doing that, local time can be adjusted by units of 15 minutes even in an area where 30-minute adjustment of local time offset is not available, and thus, local time can be precisely calculated anywhere in the world.
