TEMPERATURE MEASUREMENT CIRCUIT INTEGRATED CIRCUIT AND TEMPERATURE MEASUREMENT METHOD
The present invention relates to a temperature measuring circuit, an integrated circuit, and a temperature measuring method. It is possible to flexibly cope with required accuracy as a temperature sensor. An oscillator (11) generates a clock signal. The oscillator (11) is configured so that relation...
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Format | Patent |
Language | English Korean |
Published |
23.03.2018
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Abstract | The present invention relates to a temperature measuring circuit, an integrated circuit, and a temperature measuring method. It is possible to flexibly cope with required accuracy as a temperature sensor. An oscillator (11) generates a clock signal. The oscillator (11) is configured so that relationship between frequency and temperature of the generated clock signal can be changed. A counter (13) counts the clock signal generated by the oscillator (11) by using a reference signal whose frequency is not changed depending on the temperature. A CPU (16) generates temperature information based on the relationship between the frequency and the temperature of the clock signal in the oscillator (11) and the count value of the counter (13). A control circuit (14) changes the relationship between the frequency and the temperature of the clock signal in the oscillator (11) when the counter (13) overflows.
온도 센서로서 요구 정밀도에 따른 유연한 대응을 행하는 것을 가능하게 한다. 발진기(11)는 클럭 신호를 생성한다. 발진기(11)는 생성하는 클럭 신호의 주파수와 온도의 관계가 변경 가능하게 구성된다. 카운터(13)는 발진기(11)에 의해 생성된 클럭 신호를, 온도에 의존하여 주파수가 변화되지 않는 기준 신호를 사용하여 카운트한다. CPU(16)는, 발진기(11)에 있어서의 클럭 신호의 주파수와 온도 사이의 관계, 및 카운터(13)의 카운트값에 기초하여 온도 정보를 생성한다. 제어 회로(14)는 카운터(13)가 오버플로우한 경우에, 발진기(11)에 있어서의 클럭 신호의 주파수와 온도의 관계를 변화시킨다. |
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AbstractList | The present invention relates to a temperature measuring circuit, an integrated circuit, and a temperature measuring method. It is possible to flexibly cope with required accuracy as a temperature sensor. An oscillator (11) generates a clock signal. The oscillator (11) is configured so that relationship between frequency and temperature of the generated clock signal can be changed. A counter (13) counts the clock signal generated by the oscillator (11) by using a reference signal whose frequency is not changed depending on the temperature. A CPU (16) generates temperature information based on the relationship between the frequency and the temperature of the clock signal in the oscillator (11) and the count value of the counter (13). A control circuit (14) changes the relationship between the frequency and the temperature of the clock signal in the oscillator (11) when the counter (13) overflows.
온도 센서로서 요구 정밀도에 따른 유연한 대응을 행하는 것을 가능하게 한다. 발진기(11)는 클럭 신호를 생성한다. 발진기(11)는 생성하는 클럭 신호의 주파수와 온도의 관계가 변경 가능하게 구성된다. 카운터(13)는 발진기(11)에 의해 생성된 클럭 신호를, 온도에 의존하여 주파수가 변화되지 않는 기준 신호를 사용하여 카운트한다. CPU(16)는, 발진기(11)에 있어서의 클럭 신호의 주파수와 온도 사이의 관계, 및 카운터(13)의 카운트값에 기초하여 온도 정보를 생성한다. 제어 회로(14)는 카운터(13)가 오버플로우한 경우에, 발진기(11)에 있어서의 클럭 신호의 주파수와 온도의 관계를 변화시킨다. |
Author | MATSUZAKI TOMOKAZU |
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DocumentTitleAlternate | 온도 계측 회로, 집적 회로 및 온도 계측 방법 |
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RelatedCompanies | RENESAS ELECTRONICS CORPORATION |
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Snippet | The present invention relates to a temperature measuring circuit, an integrated circuit, and a temperature measuring method. It is possible to flexibly cope... |
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SubjectTerms | AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY ELECTRICITY GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE PHYSICS TESTING THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR |
Title | TEMPERATURE MEASUREMENT CIRCUIT INTEGRATED CIRCUIT AND TEMPERATURE MEASUREMENT METHOD |
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