Patent ID: 7607077

Claim:
A mobile communication terminal, comprising: a speaker through which audio data are outputted; a display unit on which text data are outputted; a multimedia controller that analyzes multimedia data, compensates for error of an output time of the text data based on the compensated output time, the multimedia controller comprises: a multimedia data play unit that plays selected multimedia data and updates output time information according to the play of multimedia data; an error compensation unit that calculates compensated temporal information based on a difference between output time information of the multimedia data play unit and an output audio signal; and a text output unit that outputs text data based on the compensated temporal information of the error compensation unit; wherein the multimedia data play unit comprises: a data analysis unit that analyzes a header of the multimedia data in order to play the selected multimedia data; an address measurement unit that measures address information about the output audio signal while multimedia data is played; and wherein the error compensation unit comprises: a temporal information calculation unit that calculates temporal information about the output audio signal based on the measured address information; and an error calculation unit that calculates compensated temporal information by calculating temporal error based on the calculated temporal information, wherein the error calculation unit calculates temporal error between output time information of the multimedia data play unit and the temporal information of the output audio signal, wherein the error calculation unit calculates proportional temporal error occurring in proportion to the output time based on the calculated temporal error, and wherein the error calculation unit adds or subtracts the calculated temporal error to or from the output time information of the multimedia data play unit, and subtracts the proportional temporal error to calculate compensated temporal information.