JP2009059081A - Electronic device, start method for electronic device, and computer program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic device capable of reduction of a sensible start time of the electronic device by transiting the electronic device to a hot standby state with start of another electronic device as a trigger. <P>SOLUTION: This electronic device connected to a home network for use is characterized by including: a network monitoring part judging whether to transit from a normal standby state to the hot standby state or not when receiving a power supply notification from the other electronic device connected to the home network in the normal standby state, and sending a hot standby state transition notification; and a power control part performing power supply control based on the hot standby state transition notification from the network monitoring part, and transiting a state of the electronic device from the normal standby state to the hot standby state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device, an electronic device activation method, and a computer program, and more particularly, to an electronic device connected to a home network, an electronic device activation method, and a computer program for activating the electronic device.

  In recent years, not only personal computers but also home appliances such as televisions, hard disk recorders, and home terminals, many products that can be connected to a network have appeared. By connecting personal computers and home appliances to a network, digital broadcasting and music (these are also referred to as “contents”) can be exchanged between devices.

  Such digital home appliances such as televisions and hard disk recorders that receive digital broadcasts tend to have complicated functions. Therefore, such a digital home appliance tends to have a longer time from when the power button for turning on the power is pressed until the device can actually be used.

  For example, in the case of a television, it is necessary to perform initial setting of the device, loading of various programs from the memory, decoding of received digital broadcasts, etc., from when the power button is pressed until the video is displayed on the screen. Therefore, in the case of a television, it takes about 5 seconds from when the power button is pressed until an image is displayed on the screen.

  In addition, since a disk device such as a hard disk recorder needs to mount a disk, it takes a longer time to complete the start-up process and become ready for use. Some products require a startup time of 20 seconds or more from when the power button is pressed until they can be used.

  In order to shorten the start-up time of such a digital home appliance, it is possible to prepare a state in which the functions of the digital home appliance can be immediately provided to the user. However, it is a problem in terms of power consumption that the digital home appliances are always kept in such a state as power consumption continues.

  Therefore, in order to shorten the startup time of the digital home appliance by using some user operation as a trigger and estimating the start time from the past operation history of the user with respect to the device, the function of the digital home appliance is immediately given to the user. There is a technology for making a transition to a ready state that can be provided (see, for example, Patent Documents 1 and 2).

JP 2007-60223 A International Publication No. 2004/092934

  However, there is a problem that the method of estimating the activation time from the past operation history of the user cannot be applied to a device that does not have a clock inside. Further, in the method using the user's operation as a trigger, there is a possibility that the state transition is performed even when the user does not want to turn on the power.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to prepare for providing a user with the functions of an electronic device triggered by the activation of another electronic device. Connected to a new and improved home network that can reduce the sensible start-up time of the electronic device by transitioning to a state in which the device has a function that can be immediately provided to the user. It is to provide an electronic device, a method for starting the electronic device, and a computer program.

  In order to solve the above-described problem, according to an aspect of the present invention, an electronic device that is used while connected to a home network and has a normal standby state, a hot standby state, and a power-on state is in a normal standby state If a power-on notification is received from another electronic device connected to the home network, it is determined whether or not the normal standby state transitions to the hot standby state, and the hot standby state transition notification is transmitted based on the determination result. Including a network monitoring unit, and a power supply control unit that performs power supply control based on a hot standby state transition notification from the network monitoring unit and changes the state of the electronic device from the normal standby state to the hot standby state. A featured electronic device is provided.

  According to such a configuration, when the network monitoring unit receives a power-on notification from another electronic device connected to the home network in the normal standby state, the network monitoring unit determines whether to transition from the normal standby state to the hot standby state. The hot standby state transition notification is sent based on the determination result, and the power control unit performs power supply control based on the hot standby state transition notification from the network monitoring unit, and changes the state of the electronic device from the normal standby state to the hot standby state. Transition state to state. As a result, the electronic device is switched to a state where it is ready to provide the user with the functions of the electronic device, i.e., a hot standby state, triggered by power-on of another device connected to the home network. It is possible to shorten the sensible start-up time.

  The electronic device further includes a startup history recording unit that records a startup control history that is a history of whether or not a transition has been made from the hot standby state to the power-on state, and the network monitoring unit includes the startup control recorded in the startup history recording unit Whether or not to transition to the hot standby state may be determined based on the history. According to this configuration, the activation history recording unit records the activation control history, and the network monitoring unit determines whether to transition to the hot standby state based on the activation control history recorded in the activation history recording unit. As a result, after a transition to the hot standby state is triggered by the power-on of another device connected to the home network, a history of whether or not the power is actually turned on is recorded, and the hot standby based on the history is recorded. For example, if a related device is powered on, control is performed so as to transition to a hot standby state, and if an unrelated device is powered on, control is performed so as not to transition to a hot standby state. be able to.

  The power supply control unit may transition the state from the hot standby state to the normal standby state if the power supply control unit does not transition to the power-on state within a predetermined time after transitioning to the hot standby state. According to this configuration, the power supply control unit changes the state from the hot standby state to the normal standby state if the power supply does not change to the power-on state within a predetermined time after changing to the hot standby state. As a result, the power consumption can be suppressed by shifting to the normal standby state when a predetermined time has elapsed, instead of maintaining the hot standby state indefinitely.

  The hot standby state may be a state where power is supplied to a part for providing a specific function of each electronic device and preparation for providing the function is completed.

  The hot standby state may be a state in which an initial setting process for providing a function is completed.

  In order to solve the above-described problem, according to another aspect of the present invention, there is provided a method for starting an electronic device that is connected to a home network and has a normal standby state, a hot standby state, and a power-on state. In the normal standby state, when a power-on notification is received from another electronic device connected to the home network, it is determined whether or not the normal standby state is changed to the hot standby state, and the hot standby state is determined based on the determination result. A network monitoring step for sending a transition notification, a power control step for performing power supply control based on the hot standby state transition notification sent in the network monitoring step, and hot from a normal standby state based on the power supply control in the power control step A system that transitions to the standby state Characterized in that it comprises a beam control step, a starting method of an electronic device is provided.

  According to such a configuration, when the network monitoring step receives a power-on notification from another electronic device connected to the home network in the normal standby state, the network monitoring step determines whether to transition from the normal standby state to the hot standby state. The hot standby state transition notification is sent based on the determination result, and the power control step performs power supply control based on the hot standby state transition notification in the network monitoring step, and changes the state of the electronic device from the normal standby state to the hot standby state. Transition state to. As a result, the electronic device is switched to a state where it is ready to provide the user with the functions of the electronic device, i.e., a hot standby state, triggered by power-on of another device connected to the home network. It is possible to shorten the sensible start-up time.

  In order to solve the above-described problem, according to still another aspect of the present invention, an electronic device that is used in connection with a home network and that has a normal standby state, a hot standby state, and a power-on state is started. When the computer program is in the normal standby state and receives a power-on notification from another electronic device connected to the home network, it determines whether or not to transition from the normal standby state to the hot standby state, and A network monitoring step for sending a hot standby state transition notification based on the power supply control step for performing power supply control based on the hot standby state transition notification sent in the network monitoring step, and a power supply control in the power control step From normal standby Characterized in that it comprises a system control step for a state transition to the standby state, the computer program is provided.

  According to such a configuration, when the network monitoring step receives a power-on notification from another electronic device connected to the home network in the normal standby state, the network monitoring step determines whether to transition from the normal standby state to the hot standby state. The hot standby state transition notification is sent based on the determination result, and the power control step performs power supply control based on the hot standby state transition notification in the network monitoring step, and changes the state of the electronic device from the normal standby state to the hot standby state. Transition state to. As a result, the electronic device is switched to a state where it is ready to provide the user with the functions of the electronic device, i.e., a hot standby state, triggered by power-on of another device connected to the home network. It is possible to shorten the sensible start-up time.

  As described above, according to the present invention, the function of the electronic device is ready to be provided to the user with the activation of the other electronic device as a trigger, and the function of the device can be immediately provided to the user. Provided is a new and improved electronic device used by connecting to a home network, a method for starting the electronic device, and a computer program capable of shortening the sensible start-up time of the electronic device by making the transition can do.

  Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  First, an example of a connection configuration of an electronic device according to an embodiment of the present invention will be described. FIG. 1 is an explanatory diagram illustrating an example of a connection configuration of an electronic device according to an embodiment of the present invention.

  FIG. 1 shows a case where a television 100, a speaker 102, a hard disk recorder 104, and a component 106, which are examples of electronic devices connected to the home network of the present invention, are connected to the home network 10. . Among these, the television 100, the hard disk recorder 104, and the component 106 are directly connected to the home network 10, and the speaker 102 is not directly connected to the home network 10, but is connected to the television 100 via the network.

  Although not shown in FIG. 1, the home network 10 can be connected to an external network such as the Internet by a switching hub or the like. By using the switching hub, data can be transmitted and received between an external network such as the Internet and each device connected to the home network 10.

  As described above, the television 100 performs initial setting of the device, loading of various programs from the memory, and digital broadcasting received via the antenna from when the power button (not shown) is pressed until the video is displayed on the screen. Need to be decoded. Therefore, the television 100 usually has a time of about 5 seconds from when the power button is pressed until an image is displayed on the screen.

  Here, when the power of another device is turned on, the television 100 receives a power-on notification from the electronic device and changes the state from “normal standby state” to “hot standby state”, thereby pressing the power button. The time from when the image is displayed on the screen can be shortened. The “normal standby state” and the “hot standby state” are both types of power states of the electronic device according to the embodiment of the present invention. Here, the power states of the electronic device according to the embodiment of the present invention will be described. .

  FIG. 2 is an explanatory diagram illustrating a power state of the electronic device according to the embodiment of the present invention. An electronic device according to an embodiment of the present invention has two states, a “non-energized state” in which an outlet is not connected and a “energized state” in which an outlet is connected. The “energized state” further has three states of “normal standby state”, “hot standby state”, and “power ON state”.

  The “normal standby state” refers to a state in which energization is performed only to the minimum necessary part inside the electronic device and a trigger from the outside can be received. For example, in the television 100, the state in which the power is turned off with the remote controller and the screen disappears corresponds to the normal standby state.

  “Hot standby state” refers to a state in which power is supplied to a part inside the electronic device to provide a specific function that each electronic device has, and the function is ready to be provided. . Which part of the electronic device is energized to take the hot standby state differs depending on the device. In order to enter the hot standby state, it is desirable that the initial setting process for providing the function has been completed. For example, it is desirable that the device initialization and the disk mounting be completed. In the “power ON state”, all parts that realize the functions of the electronic devices are energized, and the user is provided with the specific functions of the electronic devices. Refers to that.

  In the following, a method for starting an electronic apparatus according to an embodiment of the present invention will be described using the television 100 as an example.

  Next, the television 100 that is an example of the electronic apparatus according to the embodiment of the invention will be described. FIG. 3 is an explanatory diagram illustrating the configuration of the television 100 according to the embodiment of the present invention. Hereinafter, the configuration of the television 100 according to the embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 3, a television 100 according to an embodiment of the present invention includes a system unit 110, a CPU (Central Processing Unit) 122, a ROM (Read Only Memory) 124, and a RAM (Random Access Memory) 126. A light receiving unit 128, a power supply circuit 130, a power supply control unit 132, a communication unit 134, and a network monitoring unit 136. The system unit 110 includes a digital broadcast tuner unit 112, an electronic program guide creation unit 114, a digital broadcast decoding unit 116, a monitor 118, and a speaker 120.

  The system unit 110 is a core part of the function of the television 100, and receives a digital broadcast wave, decodes the received digital broadcast wave, creates an electronic program guide (EPG) from the received digital broadcast wave, and decodes the digital It has functions such as broadcast output.

  The digital broadcast tuner unit 112 receives a digital broadcast wave and extracts a desired MPEG (Moving Picture Experts Group) transport stream in accordance with a user's channel selection instruction. Although not shown, the digital broadcast tuner unit 112 includes a VSB (Vestational Side Band) demodulator and a QAM (Quadrature Amplitude Modulation) demodulator, and demodulates digital broadcast waves.

  The electronic program guide creation unit 114 creates an electronic program guide based on electronic program guide (EPG) data from a broadcasting station that is transmitted by being transmitted in a digital broadcast wave. The created electronic program guide is displayed on the monitor 118 according to a user instruction.

  The digital broadcast decoding unit 116 decodes the MPEG transport stream extracted by the digital broadcast tuner unit 112 and outputs video data and audio data. Video data is output to the monitor 118, and audio data is output to the speaker 120.

  The monitor 118 displays the video data decoded by the digital broadcast decoding unit 116 and the electronic program guide created by the electronic program guide creation unit 114. The speaker 120 outputs the audio data decoded by the digital broadcast decoding unit 116.

  In FIG. 2, the television 100 that receives a digital broadcast wave has been described as an example, but an analog broadcast wave may be received together with the digital broadcast wave.

  The CPU 122 controls each part of the television 100, and controls each part of the television 100 by sequentially reading and executing computer programs and data from the ROM 124. The ROM 124 is a read-only memory and stores computer programs and various data necessary for the operation of the television 100. The RAM 126 is a rewritable memory and stores various data used for the operation of the television 100. The RAM 126 is an example of the activation history recording unit of the present invention, and records which device has been switched from the normal standby state to the hot standby state when the power is turned on. Therefore, the RAM 126 is desirably a non-volatile memory that does not erase data even when the TV 100 is not turned on.

  The light receiving unit 128 receives an infrared signal from the remote controller and communicates with the CPU 122 and the power supply circuit 130 based on the received signal. The power supply circuit 130 supplies power to each part of the television 100 and stops power supply. The power control unit 132 controls power supply from the power supply circuit 130 and stop of power supply. In the present embodiment, the power supply control unit 132 controls the power supply circuit 130 so as to supply power to a part of the television 100 when the power of other devices connected to the home network is turned on. .

  The communication unit 134 exchanges data through the home network. The communication unit 134 obtains information from a plurality of networks such as serial connection, HDMI-CEC (High-Definition Multimedia Interface-Consumer Electronics Control), wireless IP (Internet Protocol) connection, EtherNet (trademark), and PLC transmission. Have.

  When a device connected to the home network is turned on, it transmits data for notifying that the power has been turned on to the home network. For example, in HDMI-CEC, there is a protocol for notifying power-on when a device is powered on.

  The network monitoring unit 136 monitors whether the data received by the communication unit 134 includes data notifying power-on from other devices. When data notifying that power is turned on from another device is sent, the television 100 is shifted to a hot standby state when a predetermined condition is met. The predetermined condition may be, for example, when a predetermined device is turned on. In this embodiment, when the hard disk recorder 104 is turned on, the television 100 is changed to a hot standby state. The condition that the television 100 is not shifted to the hot standby state when the power source of the component 106 is turned on can be determined.

  Note that the protocol of the control signal exchanged between devices is determined by the agreement between home network devices, and any protocol can be used. In the present invention, the protocol is not limited to a specific one. Absent.

  The configuration of the television 100 according to the embodiment of the present invention has been described above. Next, a startup method of the television 100 according to an embodiment of the present invention will be described.

  FIG. 4 is a flowchart for explaining a startup method of the television 100 according to the embodiment of the present invention. Hereinafter, the starting method of the television 100 according to the embodiment of the present invention will be described with reference to FIG.

  First, the network monitoring unit 136 monitors power-on from other devices connected to the home network. When power-on from another device connected to the home network is detected (step S102), the network monitoring unit 136 uses the power-on of the other device as a trigger to start-up control history stored in the RAM 126. Is referred to (step S104). The activation control history is a history of whether or not the device has actually changed from the hot standby state to the power-on state when the device has changed to the hot standby state. By referring to the activation control history, the network monitoring unit 136 can determine whether the power supply control unit 132 is energized to the system unit 110.

  FIG. 5 is an explanatory diagram showing an example of the activation control history stored in the RAM 126 according to the embodiment of the present invention. FIG. 5 shows that when the power of each device connected to the television 100 via the home network is turned on, the television 100 is actually turned on after the state of the television 100 transitions to the hot standby state. Probability is shown. Thus, by recording the probability of transition to the hot standby state, it can be used to determine whether or not the state of the television 100 transitions to the hot standby state.

  In the example shown in FIG. 5, when the device A (speaker 102) is turned on, there is a probability that the television 100 is actually turned on after the state of the television 100 transitions to the hot standby state. 2%. In addition, when the devices A and B (hard disk recorder 104) are turned on, the probability that the television 100 is actually turned on after the state of the television 100 transitions to the hot standby state is 38%. It is shown that.

  In addition, when the power of the device B and the device C (component 106) is turned on, the probability that the power of the television 100 is actually turned on after the state of the television 100 transitions to the hot standby state is 35%. In other words, when only the device B is turned on, the probability that the television 100 is actually turned on after the state of the television 100 transitions to the hot standby state is 33%. When the power of only the device C is turned on, the probability that the power of the television 100 is actually turned on after the transition of the state of the television 100 to the hot standby state is 0.1%. ing.

  When the activation control history is recorded as described above, if the probability is equal to or higher than a predetermined probability, it may be determined that the state of the television 100 is changed to the hot standby state when the power of the device is turned on. For example, if the probability that the power is turned on from the hot standby state is 30% or more, the state of the television 100 may be changed to the hot standby state when the power of the device is turned on.

  Note that whether or not to make a transition to the hot standby state may be set from the outside. For example, an item for setting whether or not to determine whether or not to transition to the hot standby state is provided on the setting screen of the television 100, the setting is performed by operating the main body of the television 100 or the remote control, and the setting result is stored in the RAM 126. It may be stored.

  As a result of referring to the activation control history in the network monitoring unit 136, it is determined whether or not to shift the television 100 to the hot standby state (step S106). As a result of the determination, when it is determined that the state of the television 100 is not changed to the hot standby state, the processing is ended as it is. On the other hand, if it is determined that the state of the television 100 is to be changed to the hot standby state as a result of the determination, an instruction to energize the system unit 110 is given to the power supply control unit 132. The power supply control unit 132 that has received the command energizes the system unit 110 (step S108).

  By energizing the system unit 110 from the power control unit 132, the television 100 takes a hot standby state (step S110). Here, the hot standby state in the television 100 includes initial settings such as device initialization, reception and decoding of broadcast waves, and creation of an electronic program guide, and does not include energization of the monitor 118 and the speaker 120.

  The system unit 110 is supplied with power by energization from the power supply circuit 130 based on the power supply control in the power supply control unit 132 that changes the state of the television 100 to the hot standby state.

  When the power is supplied from the power supply circuit 130, the system unit 110 receives the digital broadcast wave by the digital broadcast tuner unit 112, and the MPEG transport stream corresponding to the channel selected by the user before turning off the power. To extract. When the MPEG transport stream is extracted by the digital broadcast tuner unit 112, the MPEG transport stream extracted by the digital broadcast decoding unit 116 is decoded, and is transported to the digital broadcast wave by the electronic program guide creation unit 114 for transmission. An electronic program guide is created based on electronic program guide data from a broadcast station.

  As described above, when the television 100 is in a state in which broadcasting can be viewed when the monitor 118 and the speaker 120 are energized, that is, in a hot standby state, the apparent startup time of the television 100 can be shortened. . When the television 100 is in a hot standby state, when the user gives an instruction to turn on the television 100 with a remote controller or the like, the user turns on the monitor 118 and the speaker 120 so that the user can It is possible to shorten the time from when the instruction to turn on the power to is displayed until the video is displayed on the monitor 118.

  When the television 100 is changed to the hot standby state, the network monitoring unit 136 updates the activation control history stored in the RAM 126 (step S112). By updating the activation control history, when the next power-on from another device connected to the home network is detected, the updated activation control history is referred to and the TV 100 is shifted to the hot standby state. It can be determined whether or not.

  The activation method of the television 100 according to the embodiment of the present invention has been described above using FIG.

  In the present embodiment, the television 100 transitions the state of the television 100 to the hot standby state in conjunction with the power-on of other devices connected to the home network. The power consumption becomes higher compared to the normal standby state. Therefore, after the transition to the hot standby function, if the user does not perform a power-on operation for a predetermined time, it is desirable to automatically stop the power supply to the system unit 110 and return to the normal standby state.

  In the present embodiment, the television 100 detects the power-on from other devices connected to the same home network and changes the state of the television 100 to the hot standby state. Even if it exists, it can have the structure which detects the power-on from the other apparatus connected to the same home network, and changes the state of the said apparatus to a hot standby state.

  For example, in the case of the hard disk recorder 104, processing such as device initialization processing, memory mounting processing, program expansion processing, hard disk startup processing, etc., from when the power is turned on until it is actually usable. There is a need to do. Therefore, for example, when the hard disk recorder 104 detects that the power of the television 100 is turned on, the hard disk recorder 104 performs device initialization processing, memory mounting processing, program development processing, hard disk startup processing, and the like. By taking the hot standby state, it is possible to shorten the apparent startup time of the hard disk recorder 104.

  In the case of the component 106, it is necessary to perform processing such as device initialization processing, memory mounting processing, and program development processing from when the power is turned on until it is actually usable. Therefore, for example, when the component 102 detects that the speaker 102 is turned on, the component 106 performs device initialization processing, memory mounting processing, program expansion processing, and the like to take a hot standby state. Thus, it is possible to shorten the apparent activation time of the component 106.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  The present invention is applicable to an electronic device, an electronic device activation method, and a computer program, and particularly applicable to an electronic device connected to a home network, an electronic device activation method, and a computer program for activating the electronic device. is there.

It is explanatory drawing explaining the example of the connection structure of the electronic device concerning one Embodiment of this invention. It is explanatory drawing explaining the power supply state of the electronic device concerning one Embodiment of this invention. It is explanatory drawing explaining the structure of the television 100 concerning one Embodiment of this invention. It is a flowchart explaining the starting method of the television 100 concerning one Embodiment of this invention. It is explanatory drawing which shows an example of the starting control log | history stored in RAM126 concerning one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Television 102 Speaker 104 Hard disk recorder 106 Component 110 System part 112 Digital broadcast tuner part 114 Electronic program schedule preparation part 116 Digital broadcast decoding part 118 Monitor 120 Speaker 122 CPU
124 ROM
126 RAM
128 light receiving unit 130 power supply circuit 132 power supply control unit 134 communication unit 136 network monitoring unit

Claims (7)

An electronic device that is used in connection with a home network and has a normal standby state, a hot standby state, and a power-on state,
When the power-on notification is received from another electronic device connected to the home network in the normal standby state, it is determined whether or not to transition from the normal standby state to the hot standby state, and based on the determination result A network monitoring unit for sending a hot standby state transition notification;
A power control unit that performs power supply control based on the hot standby state transition notification from the network monitoring unit, and transitions the state of the electronic device from the normal standby state to the hot standby state;
An electronic device comprising: A startup history recording unit that records a startup control history that is a history of whether or not the hot standby state has transitioned to the power-on state;
The electronic device according to claim 1, wherein the network monitoring unit determines whether to transition to a hot standby state based on an activation control history recorded in the activation history recording unit.   2. The power supply control unit according to claim 1, wherein if the power supply control unit does not transition to a power-on state within a predetermined time after transitioning to a hot standby state, the power control unit transitions the state from the hot standby state to the standby state. Electronic equipment.   The hot standby state is a state in which power is supplied to a part for providing a specific function of each of the electronic devices and preparation for providing the function is performed. The electronic device described.   The electronic device according to claim 4, wherein the hot standby state is a state in which an initial setting process for providing the function is completed. A method for starting an electronic device that is used by being connected to a home network and having a normal standby state, a hot standby state, and a power-on state,
When the power-on notification is received from another electronic device connected to the home network in the normal standby state, it is determined whether or not the normal standby state is changed to the hot standby state, and the hot standby state is determined based on the determination result. A network monitoring step for sending a transition notification;
A power control step for performing power supply control based on the hot standby state transition notification sent in the network monitoring step;
A system control step for transitioning the state from the normal standby state to the hot standby state based on the power supply control in the power control step;
A method for starting an electronic device, comprising: A computer program for starting an electronic device that is used in connection with a home network and has a normal standby state, a hot standby state, and a power-on state,
When the power-on notification is received from another electronic device connected to the home network in the normal standby state, it is determined whether or not the normal standby state is changed to the hot standby state, and the hot standby state is determined based on the determination result. A network monitoring step for sending a transition notification;
A power control step for performing power supply control based on the hot standby state transition notification sent in the network monitoring step;
A system control step for transitioning the state from the normal standby state to the hot standby state based on the power supply control in the power control step;
A computer program comprising:

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