Mobile phone time automatic correction method

Abstract

Said invention provides a mobile telephone time autocorrection method. It contains signal reception / transmitting unit, time signal sampling unit memory unit, central processing unit and display unit, said method mainly setting mobile telephone initial time, time adjustment cycle, and standard time source connection mode and time request , when need proceeding time correction, said mobile telephone automatically transmitting time request to standard time source and taking standard time then configuring said standard time as system time of mobile telephone to reach higher time precision by using normal quartz oscillator.

Description

【Technical field】 [0001] The invention relates to a time automatic correction method, in particular to a time automatic correction method applied in mobile phones. 【Background technique】 [0002] With the development of communication technology, the popularity rate of mobile phones with clock function is increasing day by day, and the accuracy of the clock is increasingly important in the actual use of mobile phones. For example, the realization of functions such as memorandum and alarm clock now depends on the accuracy. The accuracy of the current clock mainly depends on the accuracy of the oscillator used in the clock circuit. At present, ordinary quartz oscillators are mostly used, and their frequency error is ±20-50ppm (20-50 parts per million), such as 20ppm For example, the time error generated every day will be 1.728 seconds, and the accumulated time error in one year will be 630.72 seconds, which will be as long as 10.5 minutes, so it will bring some inconvenience t...

AI Technical Summary

Problems solved by technology

The disadvantage of the first method is that even if a high-precision crystal oscillator is used, there is still a difference in the load capacitance of the oscillation circuit, so it is actually impossible to obtain the same high precision as a crystal oscillator, so no matter how expensive components are used, It is also impossible to get high-accuracy time

The disadvantage of the second method is that although the cost of using a general quartz oscillator is not too high, it requires a frequency adjustment device, such as a trimmer capacitor, which causes an increase in component costs and a more cumbersome defect in the frequency adjustment process, especially Is an increase in the number of components that will hinder the miniaturization of mobile phones

Images