JP2003216280A - Electronic device and cold starting method thereof - Google Patents
Electronic device and cold starting method thereofInfo
- Publication number
- JP2003216280A JP2003216280A JP2002017044A JP2002017044A JP2003216280A JP 2003216280 A JP2003216280 A JP 2003216280A JP 2002017044 A JP2002017044 A JP 2002017044A JP 2002017044 A JP2002017044 A JP 2002017044A JP 2003216280 A JP2003216280 A JP 2003216280A
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- Japan
- Prior art keywords
- temperature
- electronic device
- microprocessor
- temperature sensor
- measured
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、マイクロプロセッサ(C
PU)及び周辺部品を搭載した電子装置において、動作温
度範囲を超えた低温度の状態でも装置の起動（稼動）を
可能にした電子装置及びそのコールドスタート方法に関
する。The present invention relates to a microprocessor (C
The present invention relates to an electronic device having a PU) and peripheral parts mounted therein, which makes it possible to start (operate) the device even at a low temperature exceeding an operating temperature range, and a cold start method thereof.
【０００２】[0002]
【従来の技術】無線基地局装置の如き電子装置は、屋外
に設置されることも多く、山間部等の屋外では冬季に
は、氷点下10℃以下になることも多い。そして、無線基
地局装置の如き電子装置には、装置の制御のためにマイ
クロプロセッサ(CPU)を搭載しているのが普通である。2. Description of the Related Art Electronic devices such as radio base station devices are often installed outdoors, and in the outdoors, such as in mountainous areas, the freezing point is often below 10 ° C. in winter. An electronic device such as a wireless base station device is usually equipped with a microprocessor (CPU) for controlling the device.
【０００３】[0003]
【本発明が解決しようとする課題】そして、一般民生用
のマイクロプロセッサ(CPU)には、個々に動作温度範囲
（例えば、０℃〜70℃）が設定されており、当該設定温
度外では正常な動作を行えないため、電子装置としての
機能を果たすことができない場合があった。特に、山間
部等の寒冷地に設置されている無線基地局装置の如き電
子装置ではマイクロプロセッサの動作温度範囲（例え
ば、０℃〜70℃）の内の低い限界値である０℃以下の状
態での動作において問題が生じるときが多い。更に、無
線基地局装置の如き電子装置の動作継続中には、装置に
電流が流れることによって自己発熱しているために、マ
イクロプロセッサの温度が０℃以下になることは少ない
が、停止状態では外気の温度と同じ温度になるので、外
気が０℃以下になった場合の起動時に正常な装置の起動
ができないという問題が生じることになる。The operating temperature range (for example, 0.degree. C. to 70.degree. C.) is individually set for the general-purpose consumer microprocessors (CPUs), and the operating temperature range is normal outside the set temperature. In some cases, it is not possible to perform a proper operation, so that it may not be possible to function as an electronic device. In particular, in an electronic device such as a wireless base station device installed in a cold area such as a mountain area, a state of 0 ° C. or lower which is a lower limit value within the operating temperature range (for example, 0 ° C. to 70 ° C.) of the microprocessor. Often problems occur in the operation of. Furthermore, during the continuous operation of an electronic device such as a wireless base station device, the temperature of the microprocessor rarely becomes 0 ° C. or less because it self-heats due to the current flowing through the device, but in the stopped state Since the temperature is the same as the temperature of the outside air, there arises a problem that the normal device cannot be started at the time of starting when the outside air becomes 0 ° C. or less.
【０００４】本発明の課題(目的)は、マイクロプロセッ
サ(CPU)及び周辺部品を搭載した電子装置において、動
作温度範囲を超えた低温度の状態でも装置の起動（稼
動）を可能にした電子装置及びそのコールドスタート方
式を提供することにある。An object (object) of the present invention is to provide an electronic device equipped with a microprocessor (CPU) and peripheral components, which enables the device to be started (operated) even in a low temperature state exceeding an operating temperature range. And to provide its cold start method.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するため
に、マイクロプロセッサ及び周辺部品を搭載した電子装
置において、前記マイクロプロセッサ及び周辺部品の設
けられたプリント基板の表面温度を測定する温度センサ
と、前記温度センサの測定温度が第１の設定温度以下の
場合にオンにし、第２の設定温度以上ではオフに制御す
る。（請求項１）In order to solve the above problems, in an electronic device equipped with a microprocessor and peripheral components, a temperature sensor for measuring the surface temperature of a printed circuit board on which the microprocessor and peripheral components are provided. The temperature sensor is turned on when the temperature measured by the temperature sensor is equal to or lower than the first set temperature, and is turned off when the measured temperature is equal to or higher than the second set temperature. (Claim 1)
【０００６】また、前記温度センサは、マイクロプロセ
ッサの近辺のプリント基板上に設けられると共に、前記
加熱手段は、 前記マイクロプロセッサ及び周辺部品の
設けられたプリント基板が固定される基板台座内に設け
る。（請求項２）
また、前記加熱手段は、温度センサの測定値と第１の設
定温度との差に応じた加熱電流で制御する。（請求項
３）Further, the temperature sensor is provided on a printed board near the microprocessor, and the heating means is provided in a board pedestal to which the printed board provided with the microprocessor and peripheral parts is fixed. (Claim 2) Further, the heating means controls the heating current according to the difference between the measured value of the temperature sensor and the first set temperature. (Claim 3)
【０００７】また、前記温度センサの測定温度が第３の
設定温度になった際に、前記マイクロプロセッサに対す
るリセットを解除するリセット手段を備える。（請求項
４）
また、前記請求項１〜４のいずれか１項に記載の電子装
置において、 前記温度センサの測定温度が第３の設定
温度以上になった後に、前記マイクロプロセッサに対す
るリセットを解除して前記電子装置を起動する。（請求
項５）Further, there is provided reset means for releasing the reset to the microprocessor when the temperature measured by the temperature sensor reaches a third set temperature. (Claim 4) Moreover, in the electronic device according to any one of claims 1 to 4, after the temperature measured by the temperature sensor becomes equal to or higher than a third set temperature, the reset to the microprocessor is released. Then, the electronic device is activated. (Claim 5)
【０００８】[0008]
【発明の実施の形態】以下図１及び図２を用いて本発明
の電子装置及びそのコールドスタート方式の説明を行
う。図１は、本発明のマイクロプロセッサ(CPU)及び周
辺部品を搭載した電子装置の概略図である。図１におい
て、１は図示しないマイクロプロセッサ(CPU)及び周辺
部品が搭載されたプリント基板であって、該基板にはマ
イクロプロセッサ及び周辺部品の周辺のプリント基板の
表面温度を測定するために温度センサ３が設けられてい
る。BEST MODE FOR CARRYING OUT THE INVENTION The electronic device of the present invention and its cold start method will be described below with reference to FIGS. FIG. 1 is a schematic diagram of an electronic device equipped with a microprocessor (CPU) and peripheral components of the present invention. In FIG. 1, reference numeral 1 denotes a printed circuit board on which a microprocessor (CPU) and peripheral components (not shown) are mounted, and a temperature sensor for measuring the surface temperature of the printed circuit board around the microprocessor and the peripheral components. 3 is provided.
【０００９】また、２は前記プリント基板１が固定され
る基板台座であって、該基板台座には、前記プリント基
板を加熱するためのヒータ（加熱手段）が設けられてい
る。また、図１には示されてはいないが、前記温度セン
サの検出温度に応じて前記加熱手段のオン・オフの制御
を実行する制御手段が前記基板台座２内又は他の位置に
設けられている。Reference numeral 2 denotes a board pedestal to which the printed board 1 is fixed, and a heater (heating means) for heating the printed board is provided on the board pedestal. Although not shown in FIG. 1, control means for executing on / off control of the heating means according to the temperature detected by the temperature sensor is provided in the substrate pedestal 2 or at another position. There is.
【００１０】図２は、本発明の機能別の構成を示すブロ
ック図である。図２のは、マイクロプロセッサ(CPU)
及び周辺部品の搭載されたプリント基板の機能の内のマ
イクロプロセッサに関連した構成を示すブロック図であ
る。図２のにおいて、2-1は温度センサ、2-2は比較回
路、2-3はリセット回路及び2-4はマイクロプロセッサ
（CPU）である。FIG. 2 is a block diagram showing the structure of each function of the present invention. Figure 2 shows the microprocessor (CPU)
FIG. 3 is a block diagram showing a configuration related to a microprocessor among the functions of a printed circuit board on which peripheral components are mounted. In FIG. 2, 2-1 is a temperature sensor, 2-2 is a comparison circuit, 2-3 is a reset circuit, and 2-4 is a microprocessor (CPU).
【００１１】前記温度センサ2-1では、プリント基板の
表面温度を測定してその測定値を前記比較回路に出力す
る。温度センサとしては、例えば、外気の温度に準じた
温度範囲（例えば、−20〜40℃）程度の温度の測定が可
能で、プリント基板に対する組み込みが可能なものであ
れば、種々の形式の温度センサを用いることが可能であ
る。The temperature sensor 2-1 measures the surface temperature of the printed circuit board and outputs the measured value to the comparison circuit. As the temperature sensor, for example, various types of temperature sensors can be used as long as they can measure temperature in a temperature range (for example, −20 to 40 ° C.) according to the temperature of outside air and can be incorporated in a printed circuit board. It is possible to use a sensor.
【００１２】また、前記比較回路2-2では、前記温度セ
ンサ2-1から入力された測定値と予め設定された第3の設
定の温度(T3)との比較を行い、マイクロプロセッサに対
するリセット解除信号を出力するリセット回路2-3に出
力する。ここで、第３の設定温度は、マイクロプロセッ
サが安定した動作を行うことが可能な温度（例えば10
℃）であって、温度センサの測定値がこの第３の設定温
度（T3）以上になった際に、リセット回路2-3に出力信
号が与えられる。The comparison circuit 2-2 compares the measured value input from the temperature sensor 2-1 with a preset third set temperature (T3), and resets the microprocessor. It outputs to the reset circuit 2-3 which outputs a signal. Here, the third set temperature is a temperature (for example, 10
When the measured value of the temperature sensor exceeds the third set temperature (T3), an output signal is given to the reset circuit 2-3.
【００１３】また、リセット回路2-3は、前記比較回路2
-2からの出力信号に応じて、マイクロプロセッサ(CPU)
に対してリセット信号を出力する。このリセット回路2-
3からのリセット信号は、前記温度センサ2-1の測定値が
第３の設定温度（T3）以上になるまで継続して出力され
ている。（即ち、プリント基板の表面温度がマイクロプ
ロセッサが安定な動作可能な所定の温度（T3）以上にな
るまでは継続して出され、第３の設定温度（T3）になる
とリセット状態が解除される。）マイクロプロセッサに
対するリセット解除信号によって、マイクロプロセッサ
が起動され、マイクロプロセッサ及び周辺部品に対して
流れる電流によって、生じる自己発熱分が後述のヒータ
（加熱手段）による発熱に加わって基板の温度が上昇し
ていく。The reset circuit 2-3 includes the comparison circuit 2
-Microprocessor (CPU) depending on the output signal from
A reset signal is output to. This reset circuit 2-
The reset signal from 3 is continuously output until the measured value of the temperature sensor 2-1 becomes equal to or higher than the third set temperature (T3). (That is, it is continuously output until the surface temperature of the printed circuit board becomes equal to or higher than a predetermined temperature (T3) at which the microprocessor can operate stably, and when the temperature reaches the third set temperature (T3), the reset state is released. The reset release signal to the microprocessor activates the microprocessor, and the self-generated heat generated by the current flowing to the microprocessor and its peripheral components is added to the heat generated by the heater (heating means) described later, and the temperature of the substrate rises. I will do it.
【００１４】図２のは、温度センサの測定値に応じた
ヒータ（加熱手段）の制御に関連した構成を示すブロッ
ク図である。図２のにおいて、3-1は温度センサ、3-2
は比較回路、3-3はヒータ制御回路及び3-4はヒータであ
る。FIG. 2 is a block diagram showing a configuration related to the control of the heater (heating means) according to the measured value of the temperature sensor. In FIG. 2, 3-1 is a temperature sensor, 3-2
Is a comparison circuit, 3-3 is a heater control circuit, and 3-4 is a heater.
【００１５】前記温度センサ3-1では、プリント基板の
表面温度を測定してその測定値を前記比較回路に出力す
る。この温度センサ3-1は、図２のの温度センサと同
じもので良い。また、前記比較回路3-2では、前記温度
センサ3-1から入力された測定値と予め設定された第１
の設定温度（T1）との比較を行い、その比較結果ヒータ
制御回路3-3に出力する。ここで、第１の設定温度（T
1）は、マイクロプロセッサが搭載された基板を加熱す
る必要がある温度（例えば０℃）であって、温度センサ
の測定値がこの第１の設定温度（T1）以下である場合
に、ヒータ制御回路3-3に出力信号が与えられる。ま
た、温度センサの測定値が第２の設定温度（T2）になる
と比較回路からヒータ制御回路に対する出力信号は停止
される。The temperature sensor 3-1 measures the surface temperature of the printed circuit board and outputs the measured value to the comparison circuit. This temperature sensor 3-1 may be the same as the temperature sensor of FIG. In the comparison circuit 3-2, the measured value input from the temperature sensor 3-1 and the preset first value are used.
The set temperature (T1) is compared and the comparison result is output to the heater control circuit 3-3. Here, the first set temperature (T
1) is a temperature at which it is necessary to heat the substrate on which the microprocessor is mounted (for example, 0 ° C.), and the heater control is performed when the measured value of the temperature sensor is equal to or lower than the first set temperature (T1). The output signal is provided to the circuit 3-3. When the measured value of the temperature sensor reaches the second set temperature (T2), the output signal from the comparison circuit to the heater control circuit is stopped.
【００１６】また、ヒータ制御回路では、温度センサの
測定温度が第１の設定温度（T1）以下の際にマイクロプ
ロセッサが搭載された基板をヒータ3-4によって加熱し
て、基板の表面温度を前記第２の設定温度（T2）以上に
保つ制御を実行するものである。なお、前記第１〜３の
設定温度（T1,T2,T3）の関係は、
T1＜T3＜T2 に設定される。ヒータの加熱制御の形態と
しては、温度センサの測定温度が第１の設定温度以下の
際に一定の電流を流して加熱する方式（ON−OFF制御）
や、温度センサの測定温度が第１の設定温度を下回る程
度に応じてヒータに流す電流を制御する方式（フィード
バック制御）を適宜選択できる。Further, in the heater control circuit, when the temperature measured by the temperature sensor is equal to or lower than the first set temperature (T1), the substrate on which the microprocessor is mounted is heated by the heater 3-4 to change the surface temperature of the substrate. The control for maintaining the temperature at the second set temperature (T2) or higher is executed. The relationship between the first to third set temperatures (T1, T2, T3) is set to T1 <T3 <T2. As the heating control mode of the heater, when the temperature measured by the temperature sensor is equal to or lower than the first set temperature, a constant current is applied to heat the heater (ON-OFF control)
Alternatively, a method (feedback control) of controlling the current flowing through the heater can be appropriately selected depending on the degree to which the temperature measured by the temperature sensor falls below the first set temperature.
【００１７】また、ヒータの加熱制御の別の形態として
は、マイクロプロセッサ(CPU)及び周辺部品の搭載され
た電子装置が常時使用（稼動）状態にある場合には、常
時ヒータ制御回路を動作させておいて、電子装置内の基
板の表面温度を外気の温度変化に関わらず常時第２の設
定温度以上に保つのが望ましい。また、電子装置が常時
使用（稼動）状態になく、起動及び停止を伴う場合に
は、電子装置のヒータ制御回路を起動直前に動作させ
て、電子装置内の基板の表面温度を電子装置の使用時に
のみ、外気の温度変化に関わらず常時第２の設定温度以
上に保つことによって、無駄な電力の消費を低減でき
る。As another mode of heating control of the heater, the heater control circuit is always operated when the electronic device equipped with the microprocessor (CPU) and peripheral parts is always in use (operating). In this regard, it is desirable that the surface temperature of the substrate in the electronic device is always maintained at the second set temperature or higher regardless of the temperature change of the outside air. In addition, when the electronic device is not always in use (operating) and is accompanied by starting and stopping, the heater control circuit of the electronic device is operated immediately before starting, and the surface temperature of the substrate in the electronic device is used. Only occasionally, useless power consumption can be reduced by always keeping the second set temperature or higher regardless of the temperature change of the outside air.
【００１８】[0018]
【発明の効果】請求項１に記載の発明では、マイクロプ
ロセッサ及び周辺部品を搭載した電子装置において、前
記マイクロプロセッサ及び周辺部品の設けられたプリン
ト基板の表面温度を測定する温度センサと、前記温度セ
ンサの測定温度が第１の設定温度以下の場合にオンに
し、第２の設定温度以上ではオフに制御することによっ
て、CPUの動作範囲以下に外気の温度がなった場合に
も、安定した装置の動作を行うことができる。According to the invention described in claim 1, in an electronic device having a microprocessor and peripheral components mounted therein, a temperature sensor for measuring a surface temperature of a printed circuit board provided with the microprocessor and peripheral components, and the temperature sensor. By turning on the sensor when the measured temperature is below the first set temperature and turning it off when above the second set temperature, the device is stable even when the outside air temperature falls below the operating range of the CPU. The operation of can be performed.
【００１９】また、請求項２に記載の発明では、前記温
度センサは、マイクロプロセッサの近辺のプリント基板
上に設けられると共に、前記加熱手段は、 前記マイク
ロプロセッサ及び周辺部品の設けられたプリント基板が
固定される基板台座内に設けられているので、効率よく
CPUの搭載されたプリント基板の加熱が行える。また、
請求項３に記載の発明では、前記加熱手段は、温度セン
サの測定値と第１の設定温度との差に応じた加熱電流で
制御するので、外気の温度と動作範囲の最低温度との差
が大きい場合にはより大きな加熱電流を流して短時間で
動作温度範囲内にすることができる。Further, in the invention described in claim 2, the temperature sensor is provided on a printed circuit board in the vicinity of a microprocessor, and the heating means is a printed circuit board provided with the microprocessor and peripheral components. Efficient because it is provided inside the fixed board pedestal
Can heat the printed circuit board on which the CPU is mounted. Also,
In the invention according to claim 3, since the heating means is controlled by the heating current according to the difference between the measured value of the temperature sensor and the first set temperature, the difference between the temperature of the outside air and the minimum temperature of the operating range. When is large, a larger heating current can be passed to bring the temperature within the operating temperature range in a short time.
【００２０】また、請求項４に記載の発明では、前記温
度センサの測定温度が第３の設定温度になった際に、前
記マイクロプロセッサに対するリセットを解除するリセ
ット手段を備えることによって、基板温度がCPUの動作
範囲より低い温度の場合はCPUの動作をリセット状態に
保って装置の誤動作を防止することができる。また、請
求項５に記載の発明では、前記請求項１〜４のいずれか
１項に記載の電子装置において、 前記温度センサの測
定温度が第３の設定温度以上になった後に、前記マイク
ロプロセッサに対するリセットを解除して前記電子装置
を起動することによって、CPUの誤動作による影響を受
けない装置のコールドスタート方法が実現できる。Further, according to the invention described in claim 4, when the temperature measured by the temperature sensor reaches the third set temperature, the resetting means for canceling the reset to the microprocessor is provided, so that the substrate temperature is controlled. If the temperature is lower than the operating range of the CPU, the operation of the CPU can be kept in the reset state to prevent malfunction of the device. According to a fifth aspect of the present invention, in the electronic device according to any one of the first to fourth aspects, the microprocessor is provided after the temperature measured by the temperature sensor becomes equal to or higher than a third preset temperature. By activating the electronic device after canceling the reset of the device, a cold start method of the device that is not affected by the malfunction of the CPU can be realized.
【図1】本発明のマイクロプロセッサ(CPU)及び周辺部品
を搭載した電子装置の概略図である。FIG. 1 is a schematic diagram of an electronic device equipped with a microprocessor (CPU) and peripheral components of the present invention.
【図２】本発明の機能別の構成を示すブロック図であ
る。FIG. 2 is a block diagram showing a configuration according to functions of the present invention.
１ プリント基板 ２ 基板台座 ３ 温度センサ ４ ヒータ（加熱手段） 1 printed circuit board 2 board pedestal 3 Temperature sensor 4 heaters (heating means)
Claims (5)
た電子装置において、 前記マイクロプロセッサ及び周辺部品の設けられたプリ
ント基板の表面温度を測定する温度センサと、 前記温度センサの測定温度が第１の設定温度以下の場合
にオンにされ、第２の設定温度以上ではオフに制御され
る加熱手段と、 を備えたことを特徴とする電子装置。1. An electronic device equipped with a microprocessor and peripheral components, comprising: a temperature sensor for measuring a surface temperature of a printed circuit board provided with the microprocessor and peripheral components; and a temperature measured by the temperature sensor being set to a first setting. An electronic device comprising: a heating unit that is turned on when the temperature is equal to or lower than a temperature and is turned off when the temperature is equal to or higher than a second set temperature.
近辺のプリント基板上に設けられると共に、前記加熱手
段は、 前記マイクロプロセッサ及び周辺部品の設けら
れたプリント基板が固定される基板台座内に設けられる
ことを特徴とする請求項１記載の電子装置。2. The temperature sensor is provided on a printed circuit board near the microprocessor, and the heating means is provided in a substrate pedestal to which the printed circuit board having the microprocessor and peripheral components is fixed. The electronic device according to claim 1, wherein:
１の設定温度との差に応じた加熱電流で制御されること
を特徴とする請求項１又は２に記載の電子装置。3. The electronic device according to claim 1, wherein the heating means is controlled by a heating current according to a difference between the measured value of the temperature sensor and the first set temperature.
度になった際に、前記マイクロプロセッサに対するリセ
ットを解除するリセット手段を備えることを特徴とする
請求項１〜３のいずれか1項に記載の電子装置。4. The reset means for canceling the reset of the microprocessor when the temperature measured by the temperature sensor reaches a third set temperature, and the reset means is provided. The electronic device according to.
電子装置において、 前記温度センサの測定温度が第３の設定温度以上になっ
た後に、前記マイクロプロセッサに対するリセットを解
除して前記電子装置を起動することを特徴とする電子装
置のコールドスタート方法。5. The electronic device according to claim 1, wherein after the temperature measured by the temperature sensor becomes equal to or higher than a third set temperature, the reset for the microprocessor is released. A method of cold starting an electronic device, comprising: activating the electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002017044A JP2003216280A (en) | 2002-01-25 | 2002-01-25 | Electronic device and cold starting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002017044A JP2003216280A (en) | 2002-01-25 | 2002-01-25 | Electronic device and cold starting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003216280A true JP2003216280A (en) | 2003-07-31 |
Family
ID=27652877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002017044A Withdrawn JP2003216280A (en) | 2002-01-25 | 2002-01-25 | Electronic device and cold starting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003216280A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120005469A1 (en) * | 2010-06-30 | 2012-01-05 | Micro-Star International Corporation Limited | Electronic device capable of starting up in low-temperature environment and startup method thereof |
| JP2012059037A (en) * | 2010-09-09 | 2012-03-22 | Dakkusu:Kk | Electronic controller |
| EP2827216A4 (en) * | 2012-03-14 | 2016-01-06 | Zte Corp | Temperature control device and method and electronic device |
-
2002
- 2002-01-25 JP JP2002017044A patent/JP2003216280A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120005469A1 (en) * | 2010-06-30 | 2012-01-05 | Micro-Star International Corporation Limited | Electronic device capable of starting up in low-temperature environment and startup method thereof |
| JP2012014682A (en) * | 2010-06-30 | 2012-01-19 | Micro-Star Internatl Co Ltd | Electronic device capable of starting up in low temperature environment and start-up method therefor |
| US8527746B2 (en) * | 2010-06-30 | 2013-09-03 | Msi Computer (Shenzhen) Co., Ltd. | Electronic device capable of starting up in low-temperature environment and startup method thereof |
| JP2012059037A (en) * | 2010-09-09 | 2012-03-22 | Dakkusu:Kk | Electronic controller |
| EP2827216A4 (en) * | 2012-03-14 | 2016-01-06 | Zte Corp | Temperature control device and method and electronic device |
| US9756758B2 (en) | 2012-03-14 | 2017-09-05 | Zte Corporation | Temperature control device and method and electronic device |
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