JP2011008568A - Electronic equipment, method for controlling power source and control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electronic equipment with reduced power consumption.SOLUTION: The electronic equipment includes: a mode switching part for switching a normal operation mode in which it operates according to a function and a debug mode in which it finds and corrects a bug; and an energy saving I/O control part 204 for starting or stopping power supply to a debug interface control part 215 or a debug LED control part 216 to be used in the debug mode according to the switched mode. The mode switching part includes: a hard switch 218 equipped with a slidable terminal; a soft switch displayed on an operation part 400 and for accepting the selection of either the normal operation mode or the debug mode; and an operation determination part for determining whether a normal operation or an abnormal operation is performed in an initializing operation after power supply or system operation, and the mode switching part is configured to automatically switch the mode according to the result of determination.

Description

  The present invention relates to an electronic device having a normal operation mode and a debug mode and capable of mode switching, a method for controlling power supplied to each device included in the device, and a computer-readable control program for realizing the method. .

  Digital MFPs (MFPs) that have not only a printer function but also a FAX function, a copy function, a scanner function, and the like are widely used. In recent years, with the development of technologies such as increased memory capacity and lower costs, faster communication technologies such as networks, and improved CPU processing capabilities, the functions installed in MFPs have also become diverse and diverse. .

  There is a high possibility that bugs and defects will occur not only with MFPs but also with higher functionality of electronic devices. For this reason, debugging functions are provided, and bugs and defects are discovered and corrected.

  Some electronic devices have a debug mode. When the debug mode is selected, a debugging program is executed to find and correct bugs and defects.

  The debugging program first recognizes the existence of a bug, isolates its source, and identifies the cause. Then, the correction method is determined, the correction is performed according to the method, and finally the test is performed. A tool called ICE (In-Circuit Emulator) is widely used in this program.

  There is also a type of ICE that mounts debugging pins and functions on a production chip to achieve the same functions as this tool. This type of on-debug function-implemented ICE normally has a user mode and a debug mode. The normal user mode is a mode for executing a user program.

  In an electronic device having such a function, a module having a debugging function is integrated with the CPU, and a clock is always input and power is consumed in the same manner as the CPU. As electronic devices become multifunctional, there are problems that debugging functions become richer and, as a result, power consumption increases.

  In addition, debugging circuits and debugging LEDs are also used for debugging. The debugging LED is provided so as to indicate the operation state of the device, each power-on state, and the like, so that the operation state of the device at the time of power-on and up to what power supply voltage can be discriminated at a visual level.

  The debug circuit is connected to a monitor via a debug interface, and is provided so as to display logs such as operation states of the printed circuit board and the entire apparatus, power-on states, and status information.

These debug circuits and debug LEDs are used for the following purposes.
(i) Debugging and failure analysis at the design and development stage before mass production
(ii) Function test in printed circuit board component mounting process in mass production and analysis when failure occurs
(iii) Function test and analysis at the time of failure in the assembly process to assemble each printed circuit board and mechanical part mold in mass production to form the whole device
(iv) Analysis when a failure occurs in the market or after the product is shipped

  In the conventional technology using these circuits and LEDs, regardless of whether it is in normal user mode or debug mode, the device operating status and power supply voltage at power-on are determined so that failure analysis can be performed quickly. In some cases, a plurality of debug LEDs arranged so that the status can be monitored are lit even in the normal mode. In addition, power is also supplied to the debugging circuit to obtain a log for detailed analysis. As described above, even when the normal mode is started, there is a problem in that wasteful power is consumed when the debugging LED that is not related to the product specifications / functions is lit or power is supplied to the debugging circuit. .

  Therefore, the debug module is divided into a first debug module that does not stop the clock in the normal user mode and a second debug module that stops the clock in the normal user mode, and is different between the first debug module and the second debug module. An electronic device configured to supply a clock via a clock line has been proposed (see Patent Document 1).

  With this configuration, in the normal user mode, the clock supply to the second debug module is stopped, thereby preventing an increase in power consumption and reducing the power compared to the case where the clock is supplied to the entire debug module. be able to.

  Although the conventional electronic device can stop the clock supply to the second debug module and reduce the power consumption, the clock is supplied to the first debug module, so that the power consumption is sufficiently reduced. I can't.

  Therefore, in an electronic device having a normal operation mode and a debug mode, a device that can sufficiently reduce power consumption, and a method of controlling power supplied to each device included in the device in order to reduce power consumption. Offer was desired.

  In view of the above problems, the present invention is an electronic device having one or more functions, and a mode switching unit that switches between a normal operation mode that operates according to the function and a debug mode that finds and corrects a bug, and has been switched According to the mode, an input / output control unit that starts or stops power supply to the debugging device used in the debug mode is provided.

  This mode switching unit can be realized by a hard switch having a slidable terminal or a soft switch that is displayed on the display unit and receives selection of either the normal operation mode or the debug mode.

  In addition, the mode switching unit is a normal operation or an abnormal operation based on the operation confirmation result of each device in the initial operation for performing initial setting and operation confirmation of each device included in the electronic device after power is turned on. An operation determination unit for determining whether or not. When it is determined that the operation is abnormal, the mode switching unit can be switched to the debug mode, and the input / output control unit can start supplying power to the debugging device. This operation determination can also be performed during operation in the normal operation mode.

  If an abnormality is detected, power is supplied to the debugging device. If the device is operating normally, the debugging interface control unit, debug LED control unit, and debugging LED described below can be used. Since the power supply is stopped, power consumption can be sufficiently reduced.

  In addition, in response to the fact that the operation determination unit determines that the operation is abnormal, the electronic device determines whether or not the debugging device is communicating with a time measurement unit that measures an elapsed time since the operation is determined to be abnormal. And a communication detection unit for detecting. When the input / output control unit inquires to the communication detection unit and the time measurement unit and receives a response that the debug device is not communicating and the measured time has passed the specified time, Stop power supply to the debugging device. Thereby, it is possible to reduce power consumption after the designated time.

  In the present invention, in addition to the above-described electronic apparatus, a method for controlling power supplied to each device included in the electronic apparatus to reduce power consumption and a computer-readable control program for realizing the method are provided. Can do.

The figure which showed the structural example of the image processing system comprised from a some electronic device. The functional block diagram of MFP which is one of the electronic devices. The figure which illustrated the setting screen displayed on an operation part. The flowchart figure which showed the flow of the power supply control in the initialization operation | movement at the time of power activation. The flowchart figure which showed the flow of the power supply control in system operation | movement.

  FIG. 1 is a diagram illustrating a configuration example of an image processing system including a plurality of electronic devices. This system includes an MFP 10 serving as an image processing apparatus, a notebook PC 20 connected directly to the MFP 10 via a cable, and a PC 40 connected via a network 30 such as the Internet or a LAN. The MFP 10, the notebook PC 20, and the PC 40 are all electronic devices assembled by a large number of electronic components.

  The MFP 10 is a digital multi-function peripheral having a plurality of functions such as a printer function, a copy function, a FAX function, and a scanner function. The MFP 10 is a scanner unit including a fluorescent lamp and a CCD image sensor for reading a document, and processes read image data. Memory for storing programs and programs for controlling the entire system, CPU for executing the programs, printers including exposure devices, developing units, transfer units, etc. for executing print processing, accepting user input and setting information And an operation panel for displaying the current state and the like, and a communication interface that is connected to the notebook PC 20 or PC 40 to enable communication. The MFP 10 includes a plurality of devices such as a charging unit, a fixing unit, a cleaning unit, a paper feeding unit, a paper discharging unit, and a communication interface in addition to the above-described scanner unit, exposure apparatus, developing unit, and transfer unit.

  The MFP 10 has a normal operation mode that operates in accordance with each of the above functions, and a debug mode that finds an error (bug) or defect in the program and corrects it. When power is turned on, the MFP 10 performs initial setting and initial operation confirmation of each device included in the MFP 10 as an initialization operation.

  The notebook PC 20 and the PC 40 are installed with software such as an application for creating a document and a printer driver for controlling the MFP 10 that performs print output, a memory for storing the software, a CPU for executing the software, and the MFP 10 Communication interface that enables communication, HDD for storing other data and setting values, CD drive, DVD drive, display for displaying manuscripts, log information and error information, input of characters, etc. A keyboard, mouse, etc. are provided. Similar to the MFP 10, these notebook PC 20 and PC 40 have a normal operation mode and a debug mode, perform an initialization operation when the power is turned on, and include a plurality of devices such as a communication interface, a display, and an input device such as a mouse. .

  Here, processing performed in the image processing system shown in FIG. 1 will be briefly described. When a document or the like is created on the notebook PC 20 or PC 40 and is transmitted as print data to the MFP 10 by the printer driver to print it, the MFP 10 starts a program for processing the print data, performs image processing, and performs paper processing. Print on. For example, when the MFP 10 is a page printer, the print data described in the page description language (PDL) is transmitted from the notebook PC 20 or the PC 40, and when the MFP 10 accepts the print data, the print data described in the PDL is interpreted and intermediate The data is stored in a memory called a data memory, one page of data is read from the intermediate data memory, a drawing process is performed, and the data is written in the page memory. The engine that performs printout reads the drawing data written in the page memory, prints it on paper based on the data, and discharges the paper.

  In the case of an electrophotographic printer, the processing in the engine first charges the photosensitive drum and exposes the charged photosensitive drum to form an electrostatic latent image. This electrostatic latent image is formed based on the drawing data subjected to the drawing process. The formed electrostatic latent image is attached with toner provided in the developing unit, and then transferred onto the paper by the transfer unit. At this time, since the toner is on the paper, heat and pressure are applied by the fixing unit, and the toner is fixed to the paper. The paper on which the image is printed in this way is discharged by the paper discharge unit, and print output for one page is completed. By printing this for the page specified by the print data, the print output in the engine is completed.

  If an error (bug) occurs in the program executed in the initial operation or normal operation performed when the MFP 10, notebook PC 20, or PC 40, which is an electronic device, is turned on, it must be corrected. The mode for doing this is the debug mode. For example, it is possible to automatically switch to the debug mode when the user selects a mode or when it is detected that a bug has occurred. Details will be described later.

  Before that, the configuration of the control unit of the MFP 10 will be described with reference to a functional block diagram of the MFP 10 which is one of the electronic devices shown in FIG. The MFP 10 controls the apparatus as an engine control unit 100, a controller control unit 200, an engine interface 300 that enables communication between the engine control unit 100 and the controller control unit 200, and input from a user. And an operation unit 400 that displays various setting information and errors, and a PSU unit 500 that performs power supply control of the MFP 10.

  The engine control unit 100 controls a scanner control unit 101 for controlling a scanner unit that reads a document image, and a plotter that prints an image read by the scanner unit and prints image data transferred from the controller control unit 200. A peripheral control unit 103 for controlling peripheral devices such as a paper feed unit for feeding printing paper and a paper discharge unit for discharging printed paper, a scanner control unit 101, A power generation unit 104 that generates power to be supplied to the plotter control unit 102 and the peripheral device control unit 103 is provided.

  The controller control unit 200 includes a CPU 201 that controls the main system for controller control, a RAM 202, a RAM control unit 203 that controls communication with the RAM 202, and an energy saving I / O (input / output) that performs energy saving control and I / O control. ) Control unit 204. The controller control unit 200 includes a nonvolatile memory 205, a Flash ROM 206, an EEPROM 207, an SD CARD interface 208, a network interface 209, and an RTC 210 that are controlled by the energy saving I / O control unit 204.

  The energy saving I / O control unit 204 also performs communication control with the operation unit 400 and energy saving control with the engine control unit 100. The EEPROM 207 stores the MAC address for the network, and the nonvolatile memory 205 stores setting information, status information, and the like of the MFP 10. The RTC 210 counts time and measures time.

  The SD card mounted via the SD CARD interface 208 stores each program to be executed by the controller control unit 200, and can be used as a program download or version upgrade means to the Flash ROM 206, or each application software or emulation. Used as a software readable recording medium. A network interface 209 connects the controller control unit 200 and an external network.

  The controller control unit 200 further includes an image processing control unit 211 for processing the read image, an HDD 212 for storing image data of the processed image, and a power generation unit 213 that generates and supplies power to each device. And.

  The controller control unit 200 includes a debug interface control unit 215 connected to a monitor or PC (not shown) via the serial interface 214, a debug LED control unit 216, and a debug LED 217. Power to these units is supplied from the power generation unit 213, and an instruction to the power generation unit 213 is configured to be given by the energy saving I / O control unit 204. In addition, the energy supply I / O control unit 204 directly supplies power to these units and stops the power supply. Note that power to the LED 217 is supplied via the debug LED control unit 216.

  The CPU 201 executes a control program to control the main system controlled by the controller, and determines whether the current mode is the normal operation mode or the debug mode. For example, when the current mode is related to a normal operation that operates according to a printer function, a FAX function, a copy function, or a scanner function, the CPU 201 determines that the current mode is a normal operation mode, and the energy generation I / O control unit 204 to the power generation unit A power supply control signal for stopping power supply to the debug LED control unit 216 connected to the debug interface control unit 215 and the debug LED 217 that are debug circuits is sent to the debug interface control unit 215 and the debug LED control unit. The power supply to 216 is turned off.

  On the other hand, when executing a debugging program such as a debugger, the CPU 201 determines that the debugging mode is selected, and from the energy saving I / O control unit 204 to the power generation unit 213, to the debug interface control unit 215 and the debug LED control unit 216. A power supply control signal for supplying power is sent to cause the power generation unit 213 to generate power and turn on the power supply to the debug interface control unit 215 and the debug LED control unit 216.

  When the power of the debug interface controller 215 is turned on, the serial interface 214 is connected to a monitor or a PC via the serial interface 214 to enable serial interface communication. When the power of the debug LED controller 216 is turned on. The LED 217 can be turned on or blinked.

  In this way, in the normal operation mode, by stopping the power supply to the debugging device such as the debug interface control unit 215 and the debug LED control unit 216 that are not related to the product specifications and functions, the conventional electronic device described above is stopped. Compared with a device, power consumption can be further reduced.

  As described above, it can be determined by the control program whether the operation mode is the normal operation mode or the debug mode, but the administrator of the MFP 10 can also switch the mode. .

  For example, the hardware switch 218 connected to the energy saving I / O control unit 204 can be used for switching. The hard switch 218 can be configured to include DIPSW and a tab terminal, and can physically switch the terminal.

  The DIPSW is a small switch having terminals of the same shape mounted on an electronic circuit board for various settings of electronic equipment. The DIPSW is generally a slide switch in which about 2 to 10 terminals are arranged. One of the terminals is used for mode switching. For example, switching can be realized by allocating the sliding mode to the normal operation mode and the sliding mode to the debugging mode. .

  In this case, the CPU 201 can read the DIPSW setting and determine which mode is based on the setting. After the determination, the power supply is turned on or off in the same manner as described above. By providing such a hard switch 218 on, for example, a board, the normal operation mode and the debug mode can be easily switched by operating the switch on the board even in the situation of a single board where the soft switch described later does not function. Can do.

  In addition to the hard switch 218 described above, the switch includes a soft switch, and this soft switch can also be employed. The soft switch is configured to be displayed on the operation unit 400 as a setting screen and to switch modes depending on which selection is accepted. The set value is stored in the nonvolatile memory 205 that retains the memory even when the power is turned off.

  When the soft switch is adopted, a setting screen as shown in FIG. 3 is displayed on the operation unit 400, and selection of whether the operation mode is the normal operation mode or the debug mode is accepted. It is received via 100 and the engine interface 300 to determine which mode. After the determination, the power supply is turned on or off in the same manner as described above.

  In FIG. 3, the operation unit 400 is a touch panel, and the mode can be switched every time it is touched. Currently, the normal operation mode is on and the debug mode is off. As described above, the soft switch is displayed on the operation unit 400 and accepts a mode selection, thereby facilitating mode switching and improving operability.

  Up to this point, it has been explained that the mode can be switched by a hard switch or a soft switch. However, when the MFP 10 is powered on, the MFP 10 executes a program for performing an initialization operation, and each of the devices included in the MFP 10 is executed. Perform initial settings and check the operation to see if the settings work correctly. In this operation check, an abnormality may be detected.

  When an abnormality is detected, it is desirable to automatically enter debug mode and correct bugs and defects. In this initial setting and operation check, the CPU 201 executes a program for performing the initial operation, and if an abnormal operation occurs during the execution, a response indicating that the device does not operate normally is returned. can do. When the CPU 201 detects an abnormal operation, the CPU 201 first stores error information in the HDD 212, the RAM 202, and the like together with log information as history including processing details and warnings performed so far, and then the debug interface control unit 215 and the debug LED. Power supply to the control unit 216 is started.

  With reference to the flowchart shown in FIG. 4, the power control in the initialization operation when the power is turned on will be described in detail. The initialization operation is started from step 400. First, in step 405, power-on is accepted, and in step 410, the CPU 201 performs initial setting of each device, and confirms the operation based on the setting. In this operation check, it is checked whether each device operates normally based on the setting value set in the initial setting.

  For example, in a scanner unit that is one of the devices, the light amount of a fluorescent lamp, the input voltage of a CCD image sensor, and the like are set, and whether or not the reading can be appropriately performed is confirmed based on the set values.

  In step 415, it is confirmed whether or not the initial operation has been completed normally. For example, confirmation can be made by inquiring each device and receiving a response from each device indicating that the operation has been completed normally or an abnormal operation has occurred. If the process is completed normally, the process proceeds to step 420, where log information is collected and stored in the HDD 212, RAM 202, or the like.

  In the case of proceeding to step 420, the CPU 201 determines that each device is operating normally, and thus determines that the device is in the normal operation mode, proceeds to step 425, instructs the energy saving I / O control unit 204, and controls the power generation unit 213 to perform power control. A signal is transmitted, the power supply to the debug interface control unit 215 and the debug LED control unit 216 is turned off, and this processing is ended in step 430.

  On the other hand, if an abnormal operation is detected in step 415, the process proceeds to step 435 and time measurement is started in the RTC 210. In step 440, log information and error information are collected and stored in the HDD 212, RAM 202, etc., and the debug mode is entered. enter. The debug mode can be entered by executing a debug program.

  When entering the debug mode, the CPU 201 proceeds to step 445 to instruct the energy saving I / O control unit 204 to transmit a power control signal to the power generation unit 213, and to the debug interface control unit 215 and the debug LED control unit 216. Turn on the power supply. As a result, debugging is started, the abnormality is displayed on the monitor or PC display via the debug interface control unit 215 and the serial interface 214, and the debug LED 217 is turned on via the debug LED control unit 216. Can be flashed.

  When performing analysis work, it is possible to access log information and error information stored in the HDD 212 and RAM 202 and perform detailed analysis of the information. Therefore, in step 450, it is determined whether there is an access by serial communication from the monitor or the PC. Note that the energy saving I / O control unit 204 monitors the communication state as to whether or not the debug interface control unit 215 is accessed by serial communication from a PC or a monitor.

  If there is an access, since the analysis work is being performed, the debug mode is maintained, and the initialization operation is terminated at step 430.

  On the other hand, if there is no access, the process proceeds to step 455, where it is determined whether the time when the measurement is started in step 435 is equal to or longer than T time. If it is less than T time, the process returns to step 450 again to determine whether there is access. If there is no access and the elapsed time is equal to or greater than T hours, it is determined that there is no analysis work or has been completed, and the process proceeds to step 425 to instruct the energy saving I / O control unit 204 to supply power to the power generation unit 213. The control signal is transmitted, the power supply to the debug interface control unit 215 and the debug LED control unit 216 is turned off, and the initialization operation is finished in step 430.

  In this way, power supply to the debug interface control unit 215 and the debug LED control unit 216 can be turned off, and unnecessary power consumption can be reduced after the T time.

  T is a set value, which is set in advance by the administrator on the operation unit 400 and stored in the nonvolatile memory 205.

  In the above, the initialization operation at the time of power-on has been described in detail. However, the above-described operation check can also be performed in the system operation after the initialization operation. FIG. 5 is a flowchart showing the flow of power control in the system operation.

  The system operation is started from step 500. First, the operation is started according to the function designated in step 505. In the case of printing, operations of reading a document, drawing, and printing are performed. This is the normal operation mode.

  In step 510, it is confirmed whether the operation has been normally completed. If the process is completed normally, the process proceeds to step 515, where log information is collected and stored in the HDD 212, RAM 202, or the like.

  The CPU 201 determines that it is in the normal operation mode because there is no bug or the like, and proceeds to step 520, instructs the energy saving I / O control unit 204 to transmit a power control signal to the power generation unit 213, The power supply to the debug interface control unit 215 and the debug LED control unit 216 is turned off, and the system operation is terminated in step 525.

  On the other hand, if an abnormal operation is detected in step 510, the process proceeds to step 530 and time measurement is started in the RTC 210. In step 535, log information and error information are collected and stored in the HDD 212, RAM 202, etc., and the debug mode is entered. enter. The debug mode can be entered by executing a debug program.

  When entering the debug mode, the CPU 201 proceeds to step 540 and instructs the energy saving I / O control unit 204 to transmit a power control signal to the power generation unit 213, and to the debug interface control unit 215 and the debug LED control unit 216. Turn on the power supply. As a result, debugging is started, the abnormality is displayed on the monitor or PC display via the debug interface control unit 215 and the serial interface 214, and the debug LED 217 is turned on via the debug LED control unit 216. Can be flashed.

  When performing analysis work, the log information and error information stored in the HDD 212, RAM 202, etc. are accessed, and detailed analysis of those information is performed. Therefore, in step 545, it is determined whether there is an access by serial communication from the monitor or the PC. Note that the energy saving I / O control unit 204 monitors the communication state as to whether or not the debug interface control unit 215 is accessed by serial communication from a PC or a monitor.

  If there is an access, since the analysis work is being performed, the debug mode is maintained, and in step 525, the system operation is terminated.

  On the other hand, if there is no access, the process proceeds to step 550, and it is determined whether or not the time when the measurement is started in step 530 is equal to or longer than T time. If it is less than T time, the process returns to step 545 again to determine whether there is access. If there is no access and the elapsed time is equal to or greater than T time, it is determined that there is no analysis work or has been completed, and the process proceeds to step 520 to instruct the energy saving I / O control unit 204 to supply power to the power generation unit 213. The control signal is transmitted, the power supply to the debug interface control unit 215 and the debug LED control unit 216 is turned off, and the system operation is terminated in step 525.

  Also in this case, the power supply to the debug interface control unit 215 and the debug LED control unit 216 can be turned off to reduce unnecessary power consumption after these times.

  This T is also a set value, which is set in advance by the administrator on the operation unit 400 and stored in the nonvolatile memory 205.

  Although the present invention has been described with the above-described embodiment, the switch functions as a mode switching unit, and the energy saving I / O control unit 204 functions as an input / output control unit that controls power supply to a debugging device. The CPU 201 functions as a mode switching unit by program execution, an operation determination unit that determines whether the operation is normal or abnormal, and a communication detection unit that detects whether the debugging device is communicating. The RTC 210 determines that the operation is abnormal. It functions as a time measuring unit that measures the elapsed time since being applied.

  In addition, the present invention is not limited to the above-described embodiments, and other embodiments, additions, changes, deletions, and the like can be modified within a range that can be conceived by those skilled in the art. The embodiment is also included in the scope of the present invention as long as the operations and effects of the present invention are exhibited. Therefore, as long as it is an electronic device, it can be applied not only to the MFP but also to a PC or the like. In addition, a computer-readable control program for realizing the power control described above and a recording medium on which the control program is recorded can be provided.

DESCRIPTION OF SYMBOLS 10 ... MFP, 20 ... Notebook PC, 30 ... Network, 40 ... PC, 100 ... Engine control part, 101 ... Scanner control part, 102 ... Plotter control part, 103 ... Peripheral device control part, 104 ... Power generation part, 200 ... Controller control unit 201 ... CPU 202 ... RAM 203 ... RAM control unit 204 ... Energy saving I / O control unit 205 ... Non-volatile memory 206 ... Flash ROM 207 ... EEPROM 208 ... SD CARD interface 209 ... Network Interface 210 210 RTC 211 Image processing control unit 212 HDD 213 Power generation unit 214 Serial interface 215 Debug interface control unit 216 Debug LED control unit 217 LED 218 Hard switch , 300 ... engine interface, 400 ... operation part, 500 ... PSU part

JP 2007-193570 A

Claims (11)

An electronic device having one or more functions,
A mode switching unit that switches between a normal operation mode that operates according to the function and a debug mode that finds and corrects bugs;
An electronic apparatus comprising: an input / output control unit that starts or stops power supply to a debugging device used in the debug mode according to the switched mode.   The electronic device according to claim 1, wherein the mode switching unit is a hard switch including a slidable terminal.   The electronic device according to claim 1, wherein the mode switching unit is a soft switch that is displayed on a display unit and receives selection of either the normal operation mode or the debug mode.   The mode switching unit is a normal operation or an abnormal operation based on an operation check result of each device in an initial operation for performing initial setting and operation check of each device included in the electronic device after power is turned on. Including an operation determination unit that determines whether or not the abnormal operation is determined, the mode switching unit switches to the debug mode, the input / output control unit starts power supply to the debugging device, The electronic device according to claim 1.   The electronic device according to claim 4, wherein the operation determination unit determines the normal operation or the abnormal operation during operation in the normal operation mode. In response to determining that the operation determination unit has performed the abnormal operation, it is determined whether the debugging device is communicating with a time measurement unit that measures an elapsed time after the operation is determined to be abnormal. A communication detection unit that
The input / output control unit inquires to the time measurement unit and the communication detection unit, and sends a response that the debug device is not communicating and the measured time has passed a specified time. The electronic device according to claim 4, wherein when received, the power supply to the debugging device is stopped. A method of controlling power supplied in an electronic device having one or more functions,
Switching between a normal operation mode that operates according to the function and a debug mode that finds and corrects bugs by the mode switching unit provided in the electronic device;
And a step of starting or stopping power supply to a debugging device used in the debug mode by an input / output control unit included in the electronic device according to the switched mode. In the initial operation of performing initial setting and operation check of each device provided in the electronic device after power is turned on by the operation determination unit provided in the mode switching unit, whether the operation is normal based on the operation check result of each device, Or determining whether the operation is abnormal,
8. The power supply according to claim 7, wherein in the step of starting or stopping the power supply, the power supply to the debug device is started by switching to the debug mode when it is determined in the determination step that the operation is abnormal. Control method.   The power supply control method according to claim 7, wherein in the determining step, the normal operation or the abnormal operation is determined during the operation in the normal operation mode. In response to the determination as the abnormal operation, the time measurement unit included in the electronic device measures the elapsed time since the electronic device is determined as the abnormal operation, and the communication detection unit included in the electronic device includes the Determining whether the debugging device is communicating or not,
In the step of starting or stopping the power supply, the time measurement unit and the communication detection unit are inquired, the debugging device is not communicating, and the measured time has passed a specified time The power supply control method according to claim 8 or 9, wherein when a response to the effect is received, power supply to the debugging device is stopped.   The computer-readable control program for performing the power supply control method of any one of Claims 7-10.