| 摘要 |
An apparatus for generating a supply signal at a predetermined frequency comprises a digital synthesizer connected with an oscillator and a processor; and a temperature sensor connected with the processor. The oscillator provides a periodic excitation signal to the synthesizer, which responds by recurrently accumulating bits in quantum bit step amounts to a maximum bit capacity and returning to a starting bit count in a bit accumulating period. The synthesizer generates the supply signal based upon the bit accumulating period. The processor provides a control signal to the synthesizer to control the quantum bit step amount. The temperature sensor and the processor cooperatively employ a predetermined temperature parameter-correction factor relationship to adjust the control signal to set the quantum bit step amount to establish the bit accumulating period appropriately for the predetermined frequency. The method of the present invention comprises the steps of: (a) in no particular order: (1) providing a correlation base correlating a temperature indicator parameter with a correction factor, (2) providing a temperature sensor, (3) providing a processor; (b) sensing a parameter of ambient temperature; (c) generating the temperature indicator parameter appropriate for the parameter of ambient temperature sensed; (d) cooperatively operating the temperature sensor and the processor with the correlation base to determine a correction factor; and applying the correction factor to the synthesizer to affect the quantum bit change to alter the bit accumulating period appropriately to drive the synthesizer toward generating the source signal at the predetermined frequency.
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