KR20100022295A - Electronic device, electric source synchronization using the same and electric source synchronization system - Google Patents

Abstract

PURPOSE: An electronic device, a power source synchronization method using the same, and a power source synchronization system using the same are provided to alternatively switching on or off a particular power source of an electric device in order to reduce consumption power of the electric device and to minimize the consumption of standby power without the mode change of the electric device. CONSTITUTION: A power source synchronization method comprises the following steps: a step of generating synchronization information(S330); a step of alternatively switching on or off a particular power source based on the synchronization information(S350); a step of transmitting the synchronization information to an external device(S340).

Description

Electronic device, Electric source synchronization using the same and Electric source synchronization system}

The present invention relates to an electronic device, a power synchronization method and a power synchronization system using the same, and more particularly, to an electronic device for synchronizing power with an external device, a power synchronization method and a power synchronization system using the same.

In general, the electronic device operates in the standby mode until a command to use the electronic device is received.

The electronic device does not consume power only when it is operating and performs its original function (for example, in the case of DTV, tuning a channel or outputting a broadcast), and thus may receive an input signal from inside or outside. Even standby mode, which waits for power consumption, consumes a certain amount of power.

Therefore, in order to minimize the power consumption of the electronic device including the standby power, the mode of the electronic device should be switched to operate in the power-off mode in which the standby power is not consumed when the electronic device is not used. However, in order to switch the standby mode to the power off mode and to switch the power off mode to the standby mode, it is inevitable to unplug and plug the power cord.

Accordingly, a method for minimizing the consumption of standby power without changing the mode of the electronic device is sought.

The present invention has been made to solve the above problems, an object of the present invention, in order to further reduce the power consumed in the electronic device, the electronic device and the power supply alternately on-off the power supply of the electronic device To provide a synchronization method.

In accordance with an aspect of the present invention, an electronic device capable of communicating with an external device may include: a controller configured to generate synchronization information and to transmit the synchronization information to the external device; And a power supply unit receiving the synchronization information from the control unit and alternately turning on or off a specific power source based on the synchronization information.

Here, the synchronization information may include information regarding timing of turning on or turning off the specific power.

The control unit may generate the synchronization information at a timing when the specific power is turned on.

The control unit preferably transmits the synchronization information at a timing when the specific power is turned on.

In addition, the on timing or the off timing may be periodic.

The specific power source is preferably a power source other than a power source input to at least the power source unit among power sources for a plurality of devices in the electronic device.

The power input to the power supply unit is preferably maintained in the on state even when the specific power is turned off.

The electronic device may be any one of a broadcast receiving device and a remote control device for controlling the broadcast receiving device, and the external device may be the other of the broadcast receiving device and the remote control device.

In addition, when the electronic device is a broadcast receiving device, the specific power source is preferably a standby power source.

The specific power source is preferably synchronized with the power source of the external device turned on or off based on the synchronization information transmitted to the external device.

On the other hand, a method for synchronizing power with an external device according to an embodiment of the present invention, generating the synchronization information; Alternately turning on or off a specific power source based on the synchronization information; And transmitting the synchronization information to the external device.

Here, the synchronization information may include information regarding timing of turning on or turning off the specific power.

In the generating step, it is preferable to generate the synchronization information at a timing when the specific power is turned on.

In the transmitting step, it is preferable to transmit the synchronization information at a timing when the specific power is turned on.

In addition, it is preferable that the on timing or the off timing is periodic.

The specific power source is preferably a standby power source.

The specific power source may be synchronized with the power source of the external device turned on or off based on the synchronization information transmitted to the external device.

On the other hand, the power synchronization system according to an embodiment of the present invention, a synchronization device, a first device for alternately turning on or off the first power source based on the synchronization information, and wirelessly transmitting the synchronization information; And a second device receiving the wirelessly transmitted synchronization information and turning on or off a second power source based on the received synchronization information.

The first device may be any one of a broadcast receiving device and a remote control device for controlling the broadcast receiving device, and the second device may be the other of the broadcast receiving device and the remote control device. .

If the first device or the second device is a broadcast receiving device, the first power source or the second power source is preferably standby power of the broadcast receiving device.

The synchronization information may include information about some or all of the timings at which the first power is turned on or the timings at which the first power is turned off.

The first device may generate the synchronization information at some or all of the timings at which the first power is turned on.

The first device may wirelessly transmit the synchronization information at some or all of the timings at which the first power is turned on.

On the other hand, an electronic device capable of communicating with an external device according to an embodiment of the present invention, the communication module for receiving synchronization information from the external device in communication with the external device; And a power supply unit alternately turning on or off the standby power source of the electronic device based on the received synchronization information.

Here, the synchronization information preferably includes timing information for alternately turning on or off the standby power source for the elements other than the power source unit in the electronic device.

As described above, according to various embodiments of the present invention, it is not necessary to always keep the power supply of the electronic device on. Accordingly, the power consumed by the electronic device can be reduced, and the power consumed by the external device that can communicate with the electronic device can be reduced.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a diagram illustrating a broadcast receiving system to which the present invention is applicable. As shown in FIG. 1, the broadcast receiving system is constructed of a DTV 100, which is a type of broadcast receiving device, and a remote controller 200, which is a remote control device.

The DTV 100 provides a broadcast received by wire or wirelessly to the user, and the remote controller 200 receives a user command for the DTV 100. The DTV 100 and the remote controller 200 are connected to communicate with each other according to a radio frequency (RF) communication method. Accordingly, the remote controller 200 may transmit the input user command to the DTV 100. In addition, the DTV 100 may also transmit the input user command to the remote controller 200.

2 is a block diagram showing a specific configuration of a broadcast receiving system to which the present invention is applicable.

As shown in FIG. 2, the DTV 100 includes a DTV function block 110, a DTV control unit 120, a DTV communication module 130, and a DTV power supply unit 140.

The DTV function block 110 performs an inherent function provided by the DTV 100. That is, the DTV function block 110 receives and demodulates a digital broadcast signal, outputs after decoding and signal processing the demodulated digital broadcast signal, and provides digital broadcasting to the user.

The DTV communication module 130 is connected to the remote controller 200 to communicate with each other according to an RF communication method.

The DTV control unit 120 controls the operation of the DTV function block 110 according to a user command received from the remote controller 200 through the DTV communication module 130.

In addition, the DTV control unit 120 generates synchronization information and transmits it to the DTV power supply unit 140 and the remote controller 200.

Here, the synchronization information is information on timing when the standby power applied to the DTV 100 is turned on and off when the DTV 100 is in the standby state. That is, if the DTV 100 is in the standby state, the standby power supply of the DTV 100 is turned on or off in accordance with the synchronization information generated by the DTV control unit 120.

Here, the timing at which the standby power source is on-off may be periodic or not periodic.

Specifically, when the standby power of the DTV 100 is turned on, the standby power applied to the DTV function block 110, the DTV controller 120, and the DTV communication module 130 is turned on, and the DTV 100 is turned on. In the off state, standby power applied to the DTV function block 110, the DTV controller 120, and the DTV communication module 130 is in an off state.

On the other hand, even when the standby power of the DTV 100 is in the off state, the standby power applied to the DTV power supply 140 always remains in the on state. This is because the DTV power supply 140 operates to turn on or off standby power of the DTV 100. That is, the DTV power supply 140 is always kept on for the on-off of other units in the DTV 100.

As such, the DTV control unit 120 generates the synchronization information, transfers the generated synchronization information to the DTV power supply unit 140 to be described later, and further, generates the generated synchronization information through the DTV communication module 130. ).

Here, if the standby power applied to the DTV control unit 120 is off, the DTV control unit 120 may not perform an operation of generating and transmitting synchronization information. Accordingly, the DTV controller 120 generates and transmits synchronization information when the standby power applied to the DTV controller 120 is in an on state.

The DTV power supply unit 140 receives the synchronization information generated from the DTV control unit 120 and turns on or off standby power of the DTV 100 based on the synchronization information. That is, the DTV power supply unit 140 turns on or off standby power applied to the DTV function block 110, the DTV control unit 120, and the DTV communication module 130 based on the synchronization information.

Meanwhile, as illustrated in FIG. 2, the remote controller 200 includes a remote controller communication module 210, a remote controller controller 220, a user input unit 230, and a remote controller power supply unit 240.

The remote control communication module 210 is connected to the DTV 100 so as to communicate with each other according to an RF communication scheme.

The user input unit 230 is a means for receiving a user command and may be implemented as a button. In addition, such a button is provided with buttons such as a power button, a channel button, a volume button, and a selection button. The user can input a command indicated by the button by pressing a specific button.

The remote controller 220 transmits a user command input through the user input unit 230 to the DTV 100 through the remote controller communication module 210.

Also, the remote controller 220 transmits the synchronization information received from the DTV 100 through the remote controller communication module 210 to the remote controller power supply 240 which will be described later.

The remote control power supply unit 240 receives the synchronization information from the remote control unit 220, and turns on or off the power of the remote control unit 200 based on the synchronization information. That is, the remote control power supply unit 240 turns on or off the power applied to the remote control communication module 210, the remote control control unit 220, and the user input unit 230 based on the synchronization information.

Accordingly, standby power applied to the DTV 100 and power applied to the remote controller 200 are synchronized with each other.

In the above, the DTV 100 generates synchronization information and transmits the generated synchronization information to the remote controller 200, but this is merely an example for convenience of description. Therefore, the present invention can be applied to the case where the remote controller 200 generates the synchronization information and transmits the synchronization information to the DTV 100.

Hereinafter, referring to FIGS. 3 and 4, a process of generating synchronization information from the DTV 100 and transmitting the same to the remote control 200 and a process of generating synchronization information from the remote control 200 to the DTV 100 is described below. This will be described.

3 is a flowchart provided to explain a process of synchronizing power by generating synchronization information in the DTV 100 and transmitting it to the remote controller 200.

First, in order to generate and transmit synchronization information, the DTV 100 should be operated in a standby mode (S310).

 The DTV 100 is a power-off mode in which most of the power supplied to the DTV 100 is cut off, and provides the user with a viewable screen through the DTV 100 and supplies most of the power to the DTV 100. It is divided into the active mode and the standby mode.

The standby mode is an intermediate mode between the power off mode and the active mode, and means a state in which a minimum power for receiving a user's viewing command is supplied. For example, when the user presses the power button of the user input unit 230 to switch the DTV 100 to the active mode, the DTV 100 receives the command to switch to the active mode and standbys the DTV 100. Switch from mode to active mode. At this time, the standby mode is immediately supplied with the minimum power required to receive the switch to the active mode and to switch to the active mode.

As described above, the standby mode is a mode in which only standby power is supplied to the DTV 100, and the active mode in which the screen viewable on the DTV 100 is provided to the user and the power supplied to the DTV 100 are completely blocked. It is distinguished from the power-off mode which is a state.

The DTV 100 checks whether the main power of the DTV 100 is turned on (S320). That is, the DTV 100 determines whether a command for turning on the main power is input through a button provided on the DTV 100 itself or the user input unit 230 of the remote controller 200.

If the main power of the DTV 100 is turned on, the DTV 100 is switched to the active mode (S380). However, if the main power of the DTV 100 is not turned on, the DTV 100 maintains the standby mode and generates synchronization information for synchronizing with the remote controller 200 (S330). In addition, the DTV 100 wirelessly transmits the generated synchronization information to the remote controller 200 (S340).

Meanwhile, the DTV 100 alternately turns on and off standby power of the DTV 100 based on the generated synchronization information (S350), and the remote controller 200 of the remote controller 100 is based on the received synchronization information. The power is alternately turned on and off (S390).

In this case, the synchronization information generated by the DTV 100 may be information regarding an on-off timing of the power source up to a specific time point. Thus, in order to continue to synchronize after a certain point in time, the DTV 100 needs to generate information on the on-off timing again after the point in time. Here, the need to continuously maintain synchronization even after a certain time point may mean that a command for switching to the active mode has not been received from the user until a specific time point.

Therefore, the DTV 100 checks whether it is necessary to reproduce the synchronization information (S360). If it is determined that the synchronization information needs to be regenerated, the process returns to step S330 again to generate synchronization information. As an example, when an interrupt occurs in the DTV 100, it may be determined whether the interrupt is an interrupt for turning on the DTV 100 in step S360.

In addition, if it is determined that it is not necessary to regenerate the synchronization information, it is determined whether the main power is on (S370), and if the main power is on, the mode of the DTV 100 is switched to the active mode (S380).

As such, the DTV 100 and the remote controller 200 may be synchronized with each other based on the synchronization information generated by the DTV 100. Accordingly, the standby power of the DTV 100 and the power of the remote controller 200 are wasted. Can be minimized.

4 is a flowchart provided to explain a process of synchronizing power by generating synchronization information in the remote controller 200 and transmitting the synchronization information to the DTV 100.

First, the remote controller 200 generates synchronization information (S410) and alternately turns on / off the power of the remote controller 200 based on the generated synchronization information (S420).

On the other hand, the DTV 100 operates in the standby mode (S430) and checks whether the main power is on (S440).

If the main power of the DTV 100 is turned on (S440-Y), the DTV 100 is switched to the active mode (S510).

However, if the main power of the DTV 100 is not turned on (S440-N), the DTV 100 maintains the standby mode and notifies the remote controller 200 that the standby mode is entered (S450). That is, the DTV 100 wirelessly transmits a message informing of the standby mode to the remote controller 200 through the DTV communication module 130.

When the remote control 200 receives a message indicating that the standby mode, the remote control 200 wirelessly transmits the generated synchronization information to the DTV 100 (S460).

Thereafter, the DTV 100 alternately turns on / off the standby power of the DTV 100 based on the received synchronization information (S490).

Meanwhile, the synchronization information generated by the remote controller 200 may be information regarding on-off timing of the power source up to a specific time point. Therefore, in order to continuously maintain synchronization even after a certain time point, the remote controller 200 needs to generate information on the on-off timing again after the specific time point.

Therefore, the remote controller 200 checks whether it is necessary to regenerate the synchronization information (S470). As an example, when an interrupt occurs in the remote controller 200, it may be checked whether the interrupt is an interrupt for turning on the DTV 100 in operation S470.

If it is determined that the synchronization information needs to be regenerated (S470-Y), the process returns to step S410 again to generate the synchronization information.

In addition, if it is determined that it is not necessary to reproduce the synchronization information (S470-N), it is determined whether the main power button provided in the user input unit 230 is pressed (S480).

When it is determined that the main power button is pressed (S480-Y), the remote controller 200 wirelessly transmits a control signal for turning on the main power to the DTV 100 (S500), and accordingly, the DTV 100 is in an active mode. Switch to (S510).

Although not shown, if it is not determined that the main power is pressed (S480-N), the process returns to step S410 again to select a synchronization signal, and may perform a function corresponding to the interrupt generated by the remote controller 200.

As such, the DTV 100 and the remote controller 200 may be synchronized with each other based on the synchronization information generated by the remote controller 200. Accordingly, the standby power of the DTV 100 and the power of the remote controller 200 are wasted. Can be minimized.

FIG. 5 is a diagram illustrating a process of synchronizing standby power of the DTV 100 and power of the remote controller 200 according to synchronization information.

Referring to FIG. 5, it can be seen from the synchronization information that the standby power of the DTV 100 and the power of the remote controller 200 are turned on and off as time passes.

The section before T1 is a section in which the DTV 100 operates in a power off mode, and most of the power supplied to the DTV 100 is cut off. Therefore, the standby power supply of the DTV 100 is kept off. In this case, it has been described above that the DTV power supply 140 maintains the on state.

T1 is the point in time at which the DTV 100 starts to operate in the standby mode (A). Therefore, T1 to T2 are in a state in which the minimum power for the DTV 100 to receive a user's viewing command is supplied.

In the meantime, the DTV 100 generates sync information when the standby power is turned on, and transmits the generated sync information to the remote controller 200. Accordingly, the DTV 100 generates synchronization information and wirelessly transmits the synchronization information to the remote controller 200 while the standby power is on (B).

The synchronization information includes information on on-off timing of the power supply. It is assumed that the synchronization information generated and transmitted in B includes information for turning off the power at T2 and turning on the power at T3.

Accordingly, the DTV 100 turns off the standby power at T2 and turns on the standby power at T3 by using the generated synchronization information. In addition, the remote controller 200 uses the received synchronization information to turn the power on and off to be synchronized with the DTV 100.

In the period of T2 to T3, since standby power is turned off, synchronization information is not generated, and synchronization information cannot be transmitted. However, even in this section, since the DTV power supply unit 140 and the remote control power supply unit 240 maintain the ON state where power is continuously supplied, the DTV 100 and the remote control unit 200 at the time of T3 based on the synchronization information. Can be turned on.

On the other hand, since the synchronization information generated in (B) includes only information on the on-off timing up to T3, it is necessary to regenerate and retransmit the synchronization information for the next synchronization after the time of T3.

Accordingly, the DTV 100 generates synchronization information and wirelessly transmits the synchronization information to the remote controller 200 while the standby power is on (C).

It is assumed that the synchronization information generated and transmitted in (C) includes information for turning off the power at T4 and T6 and turning on the power at T5 and T7. That is, the synchronization information may include not only the information on the next on-off timing but also the information on the timing thereafter.

Accordingly, the DTV 100 turns off the standby power at T4 and turns on the standby power at T5 by using the generated synchronization information. In addition, the DTV 100 turns off standby power at T6 and turns on standby power at T7.

In addition, the remote controller 200 uses the received synchronization information to turn the power on and off to be synchronized with the DTV 100.

Since the standby power is turned off in the sections of T4 to T5 and the sections of T6 to T7, synchronization information is not generated, and synchronization information cannot be transmitted. However, even in this section, since the DTV power supply unit 140 and the remote control power supply unit 240 are kept in the on state where power is continuously supplied, the DTV 100 and the remote control (at the time of T5 and T7 based on the synchronization information). 200) can be turned on.

Here, although the synchronization information generated in (C) includes information on the on-off timing up to T7, of course, the synchronization information can be generated again in the period from T5 to T6.

The synchronization information generated at this time does not need to include information on on-off timings of T6 and T7. This is because the information on the on-off timings of T6 and T7 has already been generated in (C). However, the information about the on-off timing may be generated and transmitted again in the period from T5 to T6. An example would be a case where the power supply is to be turned off at a timing other than the timings of T6 and T7 already determined.

On the other hand, since the synchronization information generated in (C) includes only information on the on-off timing up to T7, it is necessary to regenerate and retransmit the synchronization information for the next synchronization after the time of T7.

Therefore, the DTV 100 generates synchronization information and wirelessly transmits the synchronization information to the remote controller 200 while the standby power is on (D).

It is assumed that the synchronization information generated and transmitted in (D) includes information for turning off the power at T8 and turning on the power at T9.

Referring to the drawings, it can be seen that the time from T3 to T5, the time from T5 to T7, and the time from T7 to T9 are different from each other. That is, the timing at which the DTV 100 and the remote controller 200 are turned on and off does not necessarily need to be periodic.

Accordingly, the DTV 100 uses the generated synchronization information to turn off the standby power at T8, turn on the standby power at T9, and repeats the above process (for example, E) to generate the synchronization information. .

In the above description, for convenience of description, the synchronization information is generated in the DTV 100 and the synchronization information is transmitted to the remote controller 200. For example, the reverse may be possible.

In addition, in the above, it is assumed that the timing of generating the synchronization information and the timing of transmitting the generated synchronization information are the same, but this is merely an example for convenience of description, and the timing of generating and transmitting the synchronization information Of course, the present invention can be applied to different cases.

In the above, it is assumed that synchronization information is continuously generated and transmitted. However, this can be changed by the user's operation. For example, the present invention can be applied to a case in which the synchronization information on the time when the power is on and off is transmitted to the remote controller at a time so as to avoid the trouble of transmitting the synchronization information at any time. However, if the synchronization information is implemented to be transmitted all at once, after a long time elapses, the synchronization between the DTV 100 and the remote controller 200 may be misaligned. Therefore, it may be necessary to check the motivation once every specific time.

In addition, in the above, it is assumed that before the DTV 100 enters the standby mode A, the remote controller 200 is maintained in the off state, but this is also merely an example for convenience of description. Therefore, before the DTV 100 enters the standby mode A, the remote controller 200 may be implemented to turn on / off power by itself, or may be implemented to remain on.

In the above description, the DTV 100 and the remote controller 200 have been described as an example of the synchronization system. However, the present invention may be applied to all electronic devices and systems that can operate by synchronizing on / off of power. .

6 is a block diagram of an electronic device that can communicate with an external device according to an embodiment of the present invention.

The electronic device of the present embodiment may be a DTV shown in FIG. 1, and in this case, the external device may be a remote controller shown in FIG. 1. According to this, the embodiment in which the synchronization signal is generated by the DTV and transmitted to the remote controller can be implemented.

In contrast, the electronic device of the present embodiment may be a remote controller shown in FIG. 1, and in this case, the external device may be a DTV shown in FIG. 1. According to this, the embodiment in which the synchronization signal is generated by the remote controller and transmitted to the DTV may be implemented.

On the other hand, the electronic device according to the present embodiment includes a control unit 610 and a power supply unit 650.

The controller 610 generates synchronization information and transmits the generated synchronization information to an external device. The power supply unit 650 receives the synchronization information from the control unit, and alternately turns on or off a specific power source based on the received synchronization information. As a result, the power consumed by the electronic device can be reduced.

7 is a flowchart illustrating a method for synchronizing power with an external device according to an embodiment of the present invention.

According to the power synchronization method according to the present embodiment, first, synchronization information is generated (S710). Thereafter, the specific power is alternately turned on or off based on the synchronization information (S720). In addition, the synchronization information is transmitted to the external device (S730). This also reduces the power consumed.

8 is a diagram of a power synchronization system according to an embodiment of the present invention.

The power synchronization system 1000 according to the present embodiment includes a first device 800 and a second device 900.

The first device 800 generates synchronization information, alternately turns on or off the first power source based on the synchronization information, and wirelessly transmits the synchronization information.

The second device 900 receives the wirelessly transmitted synchronization information, and turns on or off the second power source based on the received synchronization information. As a result, power consumed by the first device can be reduced, and power consumed by the second device can be reduced.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a view showing a broadcast receiving system to which the present invention is applicable;

2 is a block diagram showing a specific configuration of a broadcast receiving system to which the present invention is applicable;

3 is a flowchart provided to explain a process of synchronizing power by generating synchronization information in a DTV and transmitting the same to a remote controller;

4 is a flowchart provided to explain a process of synchronizing power by generating synchronization information on a remote controller and transmitting the same to a DTV;

5 is a diagram illustrating a process of synchronizing standby power of a DTV and power of a remote controller according to synchronization information;

6 is a block diagram of an electronic device according to one embodiment of the present invention;

7 is a flowchart illustrating a power synchronization method according to an embodiment of the present invention, and

8 is a diagram of a power synchronization system according to an embodiment of the present invention.

** Description of the symbols for the main parts of the drawings **

110: DTV function block 120: DTV control unit

130: DTV communication module 140: DTV power supply

210: remote control communication module 220: remote control control unit

230: remote control input unit 240: remote control power supply

Claims (25)

In an electronic device that can communicate with an external device, A control unit for generating synchronization information and transmitting the synchronization information to the external device; And And a power supply unit receiving the synchronization information from the control unit and alternately turning on or off a specific power source based on the synchronization information. The method of claim 1, The synchronization information, And information on a timing at which the specific power is turned on or off. The method of claim 1, The control unit, And the synchronization information is generated at a timing when the specific power is turned on. The method of claim 1, The control unit, And the synchronization information is transmitted at a timing when the specific power is turned on. The method according to any one of claims 2 to 4, The on timing or the off timing is periodic. The method of claim 1, The specific power source, Electronic power, characterized in that the power source other than the power input to at least the power source of the power source for the plurality of elements in the electronic device. The method of claim 6, Power input to the power supply unit, The electronic device, characterized in that the on-state state is maintained even when the specific power is off. The method of claim 1, The electronic device is any one of a broadcast receiving device and a remote control device for controlling the broadcast receiving device, The external device is an electronic device, characterized in that the other of the broadcast receiving device and the remote control device. The method of claim 8, When the electronic device is a broadcast receiving device, the specific power source is characterized in that the standby power source. The method of claim 1, The specific power source, The electronic device of claim 1, wherein the electronic device is synchronized with a power supply of the external device turned on or off based on the synchronization information transmitted to the external device. In a method of synchronizing power with an external device, Generating synchronization information; Alternately turning on or off a specific power source based on the synchronization information; And Transmitting the synchronization information to the external device. The method of claim 11, The synchronization information, And information on the timing at which the specific power is turned on or off. The method of claim 11, The generating step, And generating the synchronization information at the timing when the specific power is turned on. The method of claim 11, The transmitting step, And transmitting the synchronization information at the timing when the specific power is turned on. The method according to any one of claims 12 to 14, The on timing or the off timing is periodic. The method of claim 11, And the specific power source is a standby power source. The method of claim 11, The specific power source, And synchronizing with the power of the external device turned on or off based on the synchronization information transmitted to the external device. A first device for generating synchronization information, alternately turning on or off a first power source based on the synchronization information, and wirelessly transmitting the synchronization information; And And a second device that receives the wirelessly transmitted synchronization information and turns on or off a second power source based on the received synchronization information.  The method of claim 18, The first device is any one of a broadcast receiving device and a remote control device for controlling the broadcast receiving device, And the second device is one of the broadcast receiving device and the remote control device. The method of claim 19, And if the first device or the second device is a broadcast receiving device, the first power source or the second power source is a standby power source of the broadcast receiving device. The method of claim 18, The synchronization information, And information on some or all of the timings at which the first power is turned on or the timings at which the first power is turned off. The method of claim 18, The first device, And generating the synchronization information at some or all of the timings at which the first power is turned on. The method of claim 18, The first device, And wirelessly transmitting the synchronization information at some or all of the timings at which the first power is turned on. In an electronic device that can communicate with an external device, A communication module for communicating with the external device and receiving synchronization information from the external device; And And a power supply unit alternately turning on or off the standby power source of the electronic device based on the received synchronization information. The method of claim 24, The synchronization information, And timing information for alternately turning on or off a standby power source for elements other than the power source unit in the electronic device.

Images