JP2024007171A - Electronic device, control method for the same, program, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device that can accurately identify effective cooling points when partially cooling a device.

SOLUTION: An electronic device having a heat-generating point includes: timer means for measuring an elapsed time from the start of operation of the electronic device; a plurality of pieces of temperature detecting means for detecting a temperature of each part of the electronic device corresponding to an elapsed time as a detection temperature; prediction means for predicting a temperature of each part corresponding to an elapsed time as a predicted temperature in accordance with an operating condition of the electronic device; and determination means for determining a location of the electronic device where the number of times that the difference between the detected temperature and the predicted temperature corresponding to the elapsed time is equal to or greater than a predetermined value is equal to or greater than a threshold value as a location of a change in temperature rise.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2024,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a technology for detecting temperature rise changes around heat generating parts in electronic equipment.

Electronic devices such as digital cameras have different heat generating points depending on the operating mode and operating conditions, and as a measure against heat generation in electronic devices, configurations in which cooling devices can be attached and detached from multiple locations are being considered. Particularly in digital cameras and the like, there are problems such as increased image noise due to heat generation, and appropriate cooling can have the effect of suppressing image quality deterioration. However, some users may not attach the cooling device to all locations, and if effective cooling locations can be presented to the user for each operating mode and operating condition, the user can be encouraged to attach the cooling device.

However, when cooling is performed partially, the state of heat propagation throughout the device changes depending on which part is cooled, and therefore the degree of temperature rise in each part changes. Therefore, in order to determine effective cooling locations, it is necessary to detect changes in temperature rise at each location.

Therefore, Patent Document 1 discloses that an image forming apparatus having a plurality of temperature rising points has piping for circulating a cooling liquid between a plurality of heat receiving parts and a plurality of cooling parts, and the temperature of each temperature rising part is adjusted to A technique for controlling the circulation of coolant based on the above-mentioned technology is disclosed.

Japanese Patent Application Publication No. 2009-300852

However, the conventional technology disclosed in Patent Document 1 mentioned above is a technology that controls the temperature of each part by circulating a cooling liquid, and it is not possible to specify the parts to be cooled when partially cooling the device. .

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an electronic device that can accurately identify effective cooling points when cooling a device partially. .

An electronic device according to the present invention is an electronic device that has a heat generating part, and includes a timer that measures the elapsed time from the start of operation of the electronic device, and a temperature of each part of the electronic device that corresponds to the elapsed time. a plurality of temperature detection means for detecting temperature; a prediction means for predicting the temperature of each part corresponding to the elapsed time as a predicted temperature according to operating conditions of the electronic device; and the detected temperature corresponding to the elapsed time. and determining means for determining a location of the electronic device where the number of times the difference between the predicted temperature and the predicted temperature is equal to or greater than a threshold value as a location of change in temperature rise.

According to the present invention, when partially cooling a device, it is possible to accurately identify effective cooling locations.

FIG. 1 is a block diagram showing the configuration of an imaging device according to a first embodiment of the present invention. 5 is a flowchart showing the operation of the imaging device in the first embodiment. 7 is a flowchart showing the operation of the imaging device in the second embodiment. 7 is a flowchart showing the operation of the imaging device in the third embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the claimed invention. Although a plurality of features are described in the embodiments, not all of these features are essential to the invention, and the plurality of features may be arbitrarily combined. Furthermore, in the accompanying drawings, the same or similar components are designated by the same reference numerals, and redundant description will be omitted.

(First embodiment)
FIG. 1 is a block diagram showing the configuration of an imaging device 100 according to a first embodiment of the present invention. In FIG. 1, the imaging apparatus 100 includes a control section 101, a power supply section 102, a temperature acquisition section 103, an imaging section 104, an image processing section 105, a display section 106, a system timer 107, a system memory 108, a memory 109, and a recording circuit 110. Be prepared.

The control unit 101 includes at least one processor and controls the overall operation of the imaging apparatus 100 by executing a program stored in the memory 109.

The power supply unit 102 includes a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li-ion battery, an AC adapter, etc., and is a power supply capable of supplying the power necessary for the operation of the imaging device 100. It is a circuit.

The temperature acquisition unit 103 includes a plurality of temperature detectors, such as a thermistor or a digital thermometer, arranged at various locations to measure the temperature (detected temperature) of each part of the imaging device 100. In the present embodiment, the plurality of temperature detectors constituting the temperature acquisition unit 103 are capable of measuring the temperature of an electronic device, a recording medium, and other heat-generating members that serve as a heat source inside the imaging device 100 and the exterior temperature of the imaging device 100. placed in position. Examples of electronic devices that serve as heat sources include an imaging section 104, an image processing section 105, and a recording circuit 110, which will be described later.

The imaging unit 104 includes an imaging device such as a CMOS sensor or a CCD, and transmits the acquired video information to the image processing unit 105.

The image processing unit 105 performs predetermined calculation processing on the video signal input from the imaging unit 104, and performs image processing such as pixel interpolation processing, color conversion processing, and white balance processing based on the calculation results.

The control unit 101 outputs the image data processed by the image processing unit 105 to the display unit 106. The image processing unit 105 also has an image compression function such as JPEG.

The display unit 106 includes a display such as an LCD, and displays images as necessary based on the signal output from the image processing unit 105.

The system timer 107 measures the time used for various controls and the time of a built-in clock. In this embodiment, the elapsed time in standby mode or a predetermined operation mode is measured.

A RAM is used as the system memory 108. In the system memory 108, constants and variables for the operation of the control unit 101, programs read from the memory 109, and the like are expanded. It also has a function to save the temperature acquired by each temperature detector of the temperature acquisition unit 103 and the time measured by the system timer 107.

The memory 109 is a nonvolatile memory that can be electrically erased and stored, and is a ROM. The memory 109 stores constants, programs, etc. for the operation of the control unit 101. The program here refers to a program for executing various flowcharts described later in this embodiment. It also has a function to store predicted temperatures and predicted locations that generate the most heat for each operating mode or operating condition.

The recording circuit 110 is a circuit that writes to/reads from a removable recording medium such as a semiconductor memory for recording or reading image data.

Next, FIG. 2 is a flowchart showing the operation of detecting a change point in temperature rise during standby mode. The imaging apparatus 100 of this embodiment has a function of shifting to standby mode for power saving if no operation is performed by the user after the user sets the operating mode and operating conditions. In this embodiment, an operation of detecting a location where the degree of temperature rise changes using this standby mode will be described. Note that the degree of temperature rise changes here means that a temperature rise different from the prediction occurs depending on the environment in which the imaging device 100 is placed, compared to the temperature rise predicted according to the operation mode. do. In this embodiment, the locations to be cooled are effectively determined by determining locations where a temperature rise different from this prediction has occurred.

First, in step S100, when the imaging device 100 enters the standby mode, the control unit 101 starts measuring the elapsed time from the transition to the standby mode (from the start of the standby mode) using the system timer 107. When the standby mode is started, it is assumed that an operating mode or operating condition has been selected by the user. The operating mode or operating condition includes all operating conditions that can be selected by the user from the menu screen of the imaging device 100. Examples include 4K60P recording mode and dual slot writing.

In step S101, the control unit 101 uses the temperature acquisition unit 103 to start acquiring the temperature of each part of the imaging device 100. This acquisition of the temperature of each part is performed at regular time intervals, and it is possible to know the change in temperature of each part over time.

In step S102, the control unit 101 acquires the predicted temperature of each part from the memory 109 according to the operating mode or operating condition selected by the user. Here, the predicted temperature is a change in temperature over time when the imaging device 100 is operated without being touched by the user in an environment of 23° C. (reference temperature). This predicted temperature is a value calculated using a time function expressed by a polynomial, and is calculated by substituting the elapsed time from the start of the standby mode measured by the system timer 107 in step S100 into this polynomial. be done. Alternatively, the relationship between the elapsed time and the temperature change of each part may be stored in the memory 109 in advance, and the predicted temperature may be obtained based on the relationship. Note that the time function expressed by the above polynomial is determined in advance by experimentally measuring the relationship between elapsed time and temperature rise.

In step S103, the control unit 101 adds the difference in the current environmental temperature from the reference temperature of 23°C (environmental temperature -23°C) to the predicted temperature as an offset. Here, the environmental temperature is the temperature acquired from one of the temperature detectors included in the temperature acquisition unit 103 that is disposed at a position where the environmental temperature can be measured.

In step S104, the control unit 101 compares the offset predicted temperature with the temperature of each part acquired by the temperature acquisition unit 103 in step S101. This temperature comparison is performed at every predetermined time interval at which the temperature is acquired in step S101.

In step S105, the control unit 101 determines whether the comparison result at a certain time between the acquired temperatures at a plurality of locations and the predicted temperatures corresponding to each location is ΔN°C or more (a predetermined value or more). The control unit 101 advances the process to step S106 for locations where the comparison result is ΔN°C or more among the comparison results for the plurality of locations. On the other hand, S104 is repeated for locations where the comparison result is less than ΔN°C. Here, ΔN°C is a value that can be set arbitrarily by the user.

In step S106, the control unit 101 determines whether a state in which the comparison result between the obtained temperature and the temporally corresponding predicted temperature is equal to or higher than ΔN°C continues M times in a row at each of the plurality of locations. (Whether it continues a number of times greater than or equal to a threshold value) is determined. If it is determined that the process has continued M times in a row, the control unit 101 advances the process to step S107. On the other hand, if it is determined that it is not consecutive M times, step S104 is repeated. Here, it is determined whether or not the detection has occurred M times in a row, but any other determination method may be used as long as it can absorb the chattering of temperature detection. Note that the above M times are the number of times that can be set arbitrarily by the user.

In step S107, the control unit 101 determines a location where the comparison result is ΔN°C or more consecutive M times in time as a location where the degree of temperature rise has changed.

In step S108, the control unit 101 determines whether to end the standby mode. If it ends, this flowchart ends, and if it does not end, steps S104 to S108 are repeated.

As described above, according to the present embodiment, in the standby mode, it is possible to determine a location where the degree of temperature rise of the imaging device 100 changes, and to determine an effective cooling location.

(Second embodiment)
In the first embodiment, a change point in temperature rise is detected in standby mode, but in this embodiment, a change point in temperature rise is detected during normal operation not in standby mode.

FIG. 3 is a flowchart showing an operation for detecting a change point in temperature rise during normal operation.

First, in step S200, when the imaging device 100 enters the operation mode, the control unit 101 starts measuring the elapsed time from the time the imaging device 100 enters the operation mode (from the start of the operation mode) using the system timer 107.

In step S201, the control unit 101 uses the temperature acquisition unit 103 to start acquiring the temperature of each part of the imaging device 100. This acquisition of the temperature of each part is performed at regular time intervals, and it is possible to know the change in temperature of each part over time.

In step S202, the control unit 101 acquires the predicted temperature of each unit from the memory 109 according to the operating mode or operating condition selected by the user. Here, the predicted temperature is a change in temperature over time when the imaging device 100 is operated without being touched by the user in an environment of 23° C. (reference temperature). This predicted temperature is a value calculated using a time function expressed by a polynomial, and the elapsed time from the start of operation in the operation mode measured by the system timer 107 in step S200 is substituted into this polynomial. It is calculated by Alternatively, the relationship between the elapsed time and the temperature change of each part may be stored in the memory 109 in advance, and the predicted temperature may be obtained based on the relationship. Note that the time function expressed by the above polynomial is determined in advance by experimentally measuring the relationship between elapsed time and temperature rise.

In step S203, the control unit 101 adds the difference (environmental temperature -23°C) from the reference temperature of 23°C in the current environmental temperature to the predicted temperature as an offset. Here, the environmental temperature is the temperature acquired from one of the temperature detectors included in the temperature acquisition unit 103 that is disposed at a position where the environmental temperature can be measured.

In step S204, the control unit 101 compares the offset predicted temperature with the temperature of each part acquired by the temperature acquisition unit 103 in step S201. This temperature comparison is performed at every predetermined time interval at which the temperature is acquired in step S201.

In step S205, the control unit 101 determines whether the comparison result at a certain time between the acquired temperatures at a plurality of locations and the predicted temperatures corresponding to each location is equal to or greater than ΔN°C. The control unit 101 advances the process to step S206 for a location where the comparison result is ΔN°C or more among the comparison results for the plurality of locations. On the other hand, S204 is repeated for locations where the comparison result is less than ΔN°C. Here, ΔN°C is a value that can be set arbitrarily.

In step S206, the control unit 101 determines whether or not a state in which the comparison result between the acquired temperature and the temporally corresponding predicted temperature is equal to or higher than ΔN°C continues M times in a row at each of the plurality of locations. Determine. If it is determined that the process has continued M times in a row, the control unit 101 advances the process to step S207. On the other hand, if it is determined that it is not consecutive M times, step S204 is repeated. Here, it is determined whether or not the detection has occurred M times in a row, but any other determination method may be used as long as it can absorb the chattering of temperature detection.

In step S207, the control unit 101 determines a location where the comparison result is ΔN°C or more consecutive M times in time as a location where the degree of temperature rise has changed.

In step S208, the control unit 101 determines whether to end the standby mode. If it ends, this flowchart ends, and if it does not end, steps S204 to S208 are repeated.

As described above, according to the present embodiment, in the operation mode, it is possible to determine a location where the degree of temperature rise of the imaging device 100 changes, and to determine an effective cooling location.

(Third embodiment)
FIG. 4 is a flowchart showing the operation of predicting the location that generates the most heat according to the operating mode or operating conditions and presenting it to the user.

First, in step S300, when the imaging device 100 enters standby mode, the temperature acquisition unit 103 starts to obtain the temperature of each part of the imaging device 100. This acquisition of the temperature of each part is performed at regular time intervals, and it is possible to know the change in temperature of each part over time.

In step S301, the control unit 101 acquires a location predicted to generate the most heat from the memory 109, depending on the selected operating mode or operating conditions. The location predicted to generate the most heat is defined as the location predicted to ultimately have the highest temperature when the maximum operating time is taken into account. By cooling the parts that are predicted to generate the most heat, it is expected that the operating time can be extended.

In step S302, the control unit 101 determines whether a change point in temperature rise has been detected in standby mode. The determination here can be performed by the same process as in FIG. 2 described in the first embodiment. When the control unit 101 determines that a change point in temperature rise has been detected, the control unit 101 advances the process to step S303. On the other hand, if it is determined that no temperature rise change location has been detected, the process advances to step S313.

In step S303, the control unit 101 determines whether the operation of the imaging apparatus 100 has started in the selected operation mode or operation condition. If the operation has started, the control unit 101 advances the process to step S303. On the other hand, if the operation has not been started, steps S301 to S303 are repeated.

In step S304, the control unit 101 shortens the time interval at which the temperature acquisition unit 103 acquires the temperature. The length of the length can be set arbitrarily. Although there is a concern that shortening the temperature acquisition interval will increase task processing, this is done in order to more quickly predict the location that generates the most heat after the start of operation. In this embodiment, the acquisition interval is shortened, but other methods may be used as long as they can more quickly predict the location that generates the most heat. The location that generates the most heat is defined as the location where the temperature ultimately becomes highest when the maximum operating time is considered. By cooling the parts that generate the most heat, it is expected that the operating time can be extended.

In step S305, the control unit 101 determines whether a change point in temperature rise is detected during operation. The determination here can be performed by the same process as in FIG. 3 described in the second embodiment. If a change point in temperature rise is detected, the control unit 101 advances the process to step S306. On the other hand, if the temperature rise change location has not been detected, the process advances to step S311.

In step S306, the control unit 101 starts recording the temperature of each part acquired by the temperature acquisition unit 103 and the operating time measured by the system timer 107 in the system memory 108.

In step S307, the control unit 101 reads the acquired temperature and operating time recorded in the system memory 108, and calculates the degree of temperature rise. The degree of temperature rise is a time function expressed by a polynomial.

In step S308, the control unit 101 determines the location that generates the most heat based on the calculated temperature rise degree and the current acquired temperature.

In step S309, the control unit 101 displays the determined heat generation location on the display unit 106.

In step S310, the control unit 101 determines whether to end the operation mode. If it ends, this flowchart ends, and if it does not end, steps S305 to S310 are repeated.

In step S<b>311 , the control unit 101 displays the predicted location that generates the most heat obtained from the memory 109 on the display unit 106 .

In step S312, it is determined whether or not to end the operation mode. If it ends, this flowchart ends, and if it does not end, steps S305 to S310 are repeated.

In step S313, the control unit 101 determines whether the operation of the imaging apparatus 100 has started in the selected operation mode or operation condition. If the operation has started, the control unit 101 advances the process to step S314. On the other hand, if the operation has not been started, steps S301 to S303 are repeated.

In step S314, the control unit 101 determines whether a change point in temperature rise is detected during operation. The determination here can be performed by the same process as in FIG. 3 described in the second embodiment. If a change point in temperature rise is detected, the control unit 101 advances the process to step S315. On the other hand, if a change point in temperature rise has not been detected, the process advances to step S320.

In step S315, the control unit 101 starts recording the temperature of each part acquired by the temperature acquisition unit 103 and the operating time measured by the system timer 107 in the system memory 108.

In step S316, the control unit 101 reads the acquired temperature and operating time recorded in the system memory 108, and calculates the degree of temperature rise. The degree of temperature rise is a time function expressed by a polynomial.

In step S317, the control unit 101 determines the location that generates the most heat based on the calculated temperature rise degree and the current acquired temperature.

In step S318, the control unit 101 displays the determined heat generation location on the display unit 106.

In step S319, the control unit 101 determines whether to end the operation mode. If it ends, this flowchart ends, and if it does not end, steps S314 to S319 are repeated.

In step S<b>320 , the control unit 101 displays the predicted location that generates the most heat obtained from the memory 109 on the display unit 106 .

In step S321, it is determined whether or not to end the operation mode. If it ends, this flowchart ends, and if it does not end, steps S314 to S319 are repeated.

As described above, in this embodiment, the imaging device 100 stores the predicted temperature of each part for each operating mode or operating condition, and compares it with the acquired temperature to identify locations where the comparison results differ by a certain amount or more. It can be detected as a change point in temperature rise.

Furthermore, when a change in temperature is detected, by calculating the degree of temperature rise from the obtained temperature, it is possible to predict the location that generates the most heat even when heat propagation is changing, and present it to the user. Become.

Note that although the present embodiment has been described using the imaging device 100 as an example, the present invention is not limited to this. The present invention can be applied to any type of electronic device as long as it has multiple heat generating locations.

Furthermore, in the present embodiment, a method of displaying on the display unit 106 is used as a method of presenting the location that generates the most heat to the user, but other methods may be used as the presentation method.

The disclosure herein includes the following optical apparatus, method, program, and storage medium.

(Item 1)
An electronic device having a heat generating part,
A timer for measuring the elapsed time from the start of operation of the electronic device;
a plurality of temperature detection means for detecting the temperature of each part of the electronic device corresponding to the elapsed time as a detected temperature;
a prediction means for predicting the temperature of each part corresponding to the elapsed time as a predicted temperature according to operating conditions of the electronic device;
determining means for determining a location of the electronic device where the number of times the difference between the detected temperature and the predicted temperature corresponding to the elapsed time is equal to or greater than a predetermined value is equal to or greater than a threshold value as a location of change in temperature rise;
An electronic device characterized by comprising:

(Item 2)
The electronic device according to item 1, wherein the prediction means calculates the predicted temperature based on a function indicating a relationship between the elapsed time and the predicted temperature according to operating conditions of the electronic device.

(Item 3)
The electronic device according to item 1, wherein the prediction means predicts the predicted temperature based on a pre-stored relationship between the elapsed time and the predicted temperature.

(Item 4)
4. The electronic device according to any one of items 1 to 3, wherein the operating conditions include all operating conditions selectable by a user in operating the electronic device.

(Item 5)
5. The electronic device according to any one of items 1 to 4, wherein the predicted temperature is the temperature of each part when the electronic device is operated at a constant environmental temperature.

(Item 6)
The temperature detecting means further detects an environmental temperature of the electronic device, and the predicting means adds a difference between the detected environmental temperature and the constant environmental temperature to the predicted temperature as an offset. The electronic equipment described in item 5.

(Item 7)
According to any one of items 1 to 6, the time measuring means starts measuring the elapsed time from the start of standby mode of the electronic device or from the start of operation in the operation mode. Electronic equipment listed.

(Item 8)
2. The electronic device according to item 1, wherein the determining means determines a location that generates the most heat according to operating conditions of the electronic device when the location where the temperature rise changes is not detected.

(Item 9)
The determining means calculates a degree of temperature increase based on the detected temperature and the elapsed time when a change point of the temperature increase is detected, and calculates the degree of temperature increase based on the degree of temperature increase and the current detected temperature. 9. The electronic device according to item 8, wherein a location that generates the most heat is determined according to operating conditions of the device.

(Item 10)
10. The electronic device according to item 8 or 9, wherein the location that generates the most heat is a location where the temperature ultimately becomes highest when the maximum operating time of the electronic device is considered.

(Item 11)
The temperature detecting means determines an interval between detections of the detected temperature after the electronic device starts operating in the operating mode when the determining means detects a change in temperature in the standby mode of the electronic device. The electronic device according to item 10, characterized in that the electronic device is shortened.

(Item 12)
12. The electronic device according to any one of items 1 to 11, wherein the predetermined value can be set by a user.

(Item 13)
The electronic device according to any one of items 1 to 12, wherein the threshold value can be set by a user.

(Item 14)
A method of controlling an electronic device having a heat generating part, the method comprising:
a timing step of measuring the elapsed time from the start of operation of the electronic device;
a temperature detection step of detecting the temperature of each part of the electronic device corresponding to the elapsed time as a detected temperature;
a prediction step of predicting the temperature of each part corresponding to the elapsed time as a predicted temperature according to operating conditions of the electronic device;
a determination step of determining a location of the electronic device where the number of times the difference between the detected temperature and the predicted temperature corresponding to the elapsed time is equal to or greater than a predetermined value is equal to or greater than a threshold value as a location where the temperature rise changes;
A method for controlling an electronic device, comprising:

(Item 15)
A program for causing a computer to function as each means of the electronic device described in any one of items 1 to 13.

(Item 16)
A computer-readable storage medium storing a program for causing a computer to function as each means of the electronic device described in any one of items 1 to 13.

(Other embodiments)
The present invention also provides a system or device with a program that implements one or more functions of the above-described embodiments via a network or a storage medium, and one or more processors in a computer of the system or device reads the program. This can also be achieved by executing a process. Further, it can also be realized by a circuit that realizes one or more functions, such as an ASIC.

The invention is not limited to the embodiments described above, and various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the following claims are hereby appended to disclose the scope of the invention.

100: Imaging device, 101: Control unit, 103: Temperature acquisition unit, 104: Imaging unit, 105: Image processing unit, 106: Display unit, 107: System timer

Claims (16)

An electronic device having a heat generating part,
A timer for measuring the elapsed time from the start of operation of the electronic device;
a plurality of temperature detection means for detecting the temperature of each part of the electronic device corresponding to the elapsed time as a detected temperature;
a prediction means for predicting the temperature of each part corresponding to the elapsed time as a predicted temperature according to operating conditions of the electronic device;
determining means for determining a location of the electronic device where the number of times the difference between the detected temperature and the predicted temperature corresponding to the elapsed time is equal to or greater than a predetermined value is equal to or greater than a threshold value as a location of change in temperature rise;
An electronic device characterized by comprising: The electronic device according to claim 1, wherein the prediction means calculates the predicted temperature based on a function indicating a relationship between the elapsed time and the predicted temperature according to operating conditions of the electronic device. . The electronic device according to claim 1, wherein the prediction means predicts the predicted temperature based on a pre-stored relationship between the elapsed time and the predicted temperature. 2. The electronic device according to claim 1, wherein the operating conditions include all operating conditions selectable by a user in operating the electronic device. 2. The electronic device according to claim 1, wherein the predicted temperature is a temperature of each part when the electronic device is operated at a constant environmental temperature. The temperature detecting means further detects an environmental temperature of the electronic device, and the predicting means adds a difference between the detected environmental temperature and the constant environmental temperature to the predicted temperature as an offset. The electronic device according to claim 5. 2. The electronic device according to claim 1, wherein the time measuring means starts measuring the elapsed time from the time when the electronic device starts a standby mode or from the time when it starts operating in an operating mode. 2. The electronic device according to claim 1, wherein the determining means determines a location that generates the most heat according to operating conditions of the electronic device when the location where the temperature rise changes is not detected. The determining means calculates a degree of temperature increase based on the detected temperature and the elapsed time when a change point of the temperature increase is detected, and calculates the degree of temperature increase based on the degree of temperature increase and the current detected temperature. 9. The electronic device according to claim 8, wherein a location that generates the most heat is determined according to operating conditions of the device. 9. The electronic device according to claim 8, wherein the location that generates the most heat is a location where the temperature ultimately becomes highest when the maximum operating time of the electronic device is considered. The temperature detecting means determines an interval between detections of the detected temperature after the electronic device starts operating in the operating mode when the determining means detects a change in temperature in the standby mode of the electronic device. The electronic device according to claim 10, characterized in that the length is short. The electronic device according to claim 1, wherein the predetermined value can be set by a user. The electronic device according to claim 1, wherein the threshold value can be set by a user. A method of controlling an electronic device having a heat generating part, the method comprising:
a timing step of measuring the elapsed time from the start of operation of the electronic device;
a temperature detection step of detecting the temperature of each part of the electronic device corresponding to the elapsed time as a detected temperature;
a prediction step of predicting the temperature of each part corresponding to the elapsed time as a predicted temperature according to operating conditions of the electronic device;
a determination step of determining a location of the electronic device where the number of times the difference between the detected temperature and the predicted temperature corresponding to the elapsed time is equal to or greater than a predetermined value is equal to or greater than a threshold value as a location where the temperature rise changes;
A method for controlling an electronic device, comprising: A program for causing a computer to function as each means of the electronic device according to any one of claims 1 to 13. A computer-readable storage medium storing a program for causing a computer to function as each means of the electronic device according to any one of claims 1 to 13.

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