상세정보
등록 크리스탈 오실레이터의 온도보상 방법
- 출원번호
- 10464735 (2003.06.19)
- 공개번호
- 20040124937 (2004.07.01)
- 등록번호
- 6870434 (2005.03.22)
- 출원국
- 미국
- 협약과제
- 초록
- The present invention relates to a method for compensating temperature in a crystal oscillator including a capacitor array consisted of a first bank of unit capacitors each with low capacitance and a second bank of unit capacitors each with high capacitance. The method comprising the steps of calculating memory address that stores information about the capacitor array address in accordance with the temperature that is subtracted from present temperature by a temperature offset code; reading data from a memory address corresponding to remain bits excepted lowest bit when the lowest bit is 0 among the memory address; averaging data read from a memory address corresponding to remain bits excepted lowest bit and data of a memory address incremented by 1 from the memory address when the lowest bit is 1 among the memory address; transmitting data read from the memory address or averaged data to the first bank or second bank by comparing the memory address and temperature boundary code; and adjusting the capacitor array with capacitance corresponding to a present temperature by using data transmitted to the first bank or second bank.
- KSP 제안 키워드
- Capacitor array, Crystal Oscillator, Memory address, high capacitance, low capacitance