TIMING PROGRAM OF SOFTWARE TIMEPIECE
PROBLEM TO BE SOLVED: To carry out a temperature-compensation by executing a software process using a small number of frequency variation tables being previously created, even for variations in the individual crystal oscillators. SOLUTION: A timing program of a software timepiece is provided with a...
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Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To carry out a temperature-compensation by executing a software process using a small number of frequency variation tables being previously created, even for variations in the individual crystal oscillators. SOLUTION: A timing program of a software timepiece is provided with a time-calculating program which calculates the current time from a clock count of a crystal oscillator; a temperature error time calculating program which picks up frequency variation errors, by referring to the frequency variation tables based on temperature data obtained by converting the input value of a temperature detector using a temperature detection table, and outputs error time data at each fixed time interval from the clock count; and an error time correcting program which calculates the display time, by adding to or subtracting from the error time data the current time. The clock count of the crystal oscillator is compensated into a clock count number that has been set from an input from a compensation device. COPYRIGHT: (C)2007,JPO&INPIT |
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