| 標題：Digital adjustable chip oscillator |
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| 學年 | 94 |
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| 學期 | 2 |
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| 專利開始日期 | 2006/02/21 |
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| 作品名稱 | Digital adjustable chip oscillator |
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| 作品名稱（其他語言） | |
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| 著者 | Chang, Chia-yang; Chen, Po-chang; Lee, Yang-han; Yang, Ching-yuan |
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| 單位 | 淡江大學電機工程學系 |
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| 著錄名稱、卷期、頁數 | |
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| 描述 | United States Patent: 7,002,414;專利國別：美國;Application number: 10/688,516;國際分類號：H03L 7/00 |
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| 摘要 | A digital adjustable chip oscillator comprises a voltage control oscillator, a reference voltage circuit, a voltage regulation circuit, a digital tuning circuit, a frequency detector and a programmable controller. The oscillator generates an oscillation signal and receives a control voltage and an operating voltage from the voltage regulation circuit and the reference voltage circuit to stabilize and adjust the frequency of oscillation signal. The digital tuning circuit receives a digital code stored in a programmable memory to adjust the control voltage. The frequency detector detects and compares the frequency of oscillation signal with a first and second frequency, wherein when the frequency of the oscillation signal lies between the first and second frequency, the frequency detector outputs a high voltage signal and otherwise the frequency detector outputs a low voltage signal. The programmable controller receives the high voltage signal to stop a programmable counter to acquire the digital code. |
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| 關鍵字 | |
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| 語言 | 英文(美國) |
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| 相關連結 | |
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