JP2007110358A - Electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of preventing wasteful power consumption in case of a communication impossible state where no communication is established with an external device for controlling the power supply state of the electronic apparatus. <P>SOLUTION: In case a communication unavailable state is detected due to abnormal communication or disconnection of a communication path with an external device (Yes side of S7), the power supply state of the electronic apparatus is automatically fluctuated (S12) when a given condition is met after the power supply state of the electronic apparatus is fluctuated under the direction from the external device (Yes side of S9). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device whose operation is controlled by an external device by a communication method compliant with the IEEE 1394 standard, and more particularly to a control process of a power supply state in the electronic device.

There are various recorders (an example of electronic devices) such as a hard disk recorder, a DVD recorder, and a video tape recorder having a function of recording and reproducing various information such as television broadcasting, images, and music. This recorder has a normal operation mode for executing the recording processing and reproduction processing of the various information, and a power saving operation mode in which power consumption is reduced as compared with the normal operation mode. The power saving operation mode refers to, for example, a state where power to electronic devices such as a hard disk and a display panel excluding a control unit that controls the operation of the apparatus is turned off.
On the other hand, a technique for controlling the power state of the recorder by an external device that is communicably connected to the recorder by a communication method compliant with the IEEE 1394 standard (see, for example, Patent Document 1) is well known. For example, the normal operation mode and the power saving operation mode of the recorder are switched according to a control signal transmitted from the external device to the recorder.

Specifically, when the recorder does not include a digital tuner for receiving digital television broadcasts, a digital tuner device (an example of an external device, hereinafter referred to as “tuner device”) including the digital tuner in the recorder. Are abbreviated to each other by a communication method based on the IEEE 1394 standard. As a result, the recorder can record the digital television broadcast transmitted from the tuner device by a communication method compliant with the IEEE 1394 standard.
In the recorder, when a program to be recorded is designated by the user in the tuner device, recording is started according to a recording start instruction transmitted from the external device at the start time of the program, and at the end time of the program. Recording is ended according to a recording end instruction transmitted from the tuner device. Note that the user designates a program according to an electronic program guide (EPG) based on electronic program data acquired by the tuner device, for example.
In addition, when the recording start instruction is transmitted from the tuner device to the recorder, a power-on command for switching the operation mode to the normal operation mode is transmitted when the recorder is in the power saving operation mode. . Thus, even when the recorder is in the power saving operation mode, the program can be recorded by switching the operation mode to the normal operation mode by the power-on command.
On the other hand, when the recording end instruction is transmitted from the tuner device to the recorder, a power-off command for switching the operation mode of the recorder to the power saving operation mode is transmitted. Thereby, in the recorder, the operation mode is switched to the power saving operation mode by the power-off command.
JP 2002-77182 A

However, after the tuner device transmits the power-on command to the recorder and the recorder operation mode is switched from the power saving operation mode to the normal operation mode, the cable connecting the recorder and the tuner device is disconnected. In such a case that the communication device is unable to communicate, the power-off command is not transmitted from the tuner device to the recorder indefinitely, so the normal operation mode is continued and power is wasted in the recorder. The problem arises.
Therefore, the present invention has been made in view of the above circumstances, and the object of the present invention is to use wasted power when a communication disabled state in which communication with an external device that controls the power supply state of the electronic device cannot be performed occurs. An object of the present invention is to provide an electronic device that can prevent consumption.

In order to achieve the above object, the present invention is applied to an electronic device whose operation is controlled by an external device by a communication method compliant with the IEEE 1394 standard, and the communication path with the external device is disconnected or a communication error occurs. After the predetermined condition is satisfied after the power supply state of the electronic device is changed by an instruction from the external device, the power supply state of the electronic device is automatically changed. It is configured as an electronic device characterized by being varied.
More specifically, it is conceivable to switch on / off the power supply of the electronic device, or to switch between the normal operation mode and the power saving operation mode of the electronic device.
According to such a configuration, a communication disabled state due to a communication path disconnection or communication abnormality with the external device occurs, and the instruction to change the power supply state is not normally issued from the external device. However, when the communication disabled state is detected and the predetermined condition is satisfied, the power state of the electronic device is automatically changed. Specifically, the power of the electronic device is automatically turned off or automatically switched to the power saving operation mode, so that unnecessary power is consumed by continuing the power on state of the electronic device or continuing the normal operation mode. Consumption can be prevented.
Here, the predetermined condition is, for example, that a predetermined time elapses after the power supply state of the electronic device is changed by an instruction from the external device. Thereby, useless power consumption exceeding the predetermined time can be prevented.

In addition, the electronic device receives a television broadcast receiving means for receiving a television broadcast, an electronic program information acquiring means for acquiring the electronic program information of the television broadcast, and an electronic program acquired by the electronic program information acquiring means. And a program identifying means for identifying a television broadcast program being received by the broadcast receiving means based on the information, the predetermined condition is determined based on the television broadcast identified by the program identifying means. It is desirable to end the program.
According to this configuration, the changed power supply state of the electronic device is continued until the program being recorded in the electronic device ends, and the power supply state of the electronic device is changed after the program ends. For example, it is suitable when the communication impossible state temporarily occurs and the communication is restored, or when the communication impossible state is erroneously detected. In addition, by automatically changing the power supply state of the electronic device after the program ends, extra power consumption can be reduced as much as possible.

In addition, it is desirable to store variation information related to the fact that the power state of the electronic device has been automatically varied, and to output the variation information to a predetermined display means. As a result, the user can easily refer to the change information by automatically changing the power state of the electronic device because the electronic device is in a state where communication with the external device is disabled. You can know.
At this time, since the change information only needs to be displayed when the user can refer to it, the state manual change means for changing the power supply state of the electronic device by a predetermined operation input by the user is used. What is necessary is just to output the said fluctuation | variation information to the said predetermined | prescribed display means, when a power supply state is fluctuate | varied.
Here, the change information includes, for example, that the power supply state of the electronic device is automatically changed, the change time, the content of the predetermined program at the time of change, the communication disabled state being detected, It is conceivable that the information includes one or more information of the detection time and the content of the predetermined program at the time of detection.

According to the present invention, even when a communication disabled state due to a communication path disconnection or communication abnormality with the external device occurs, an instruction for changing the power supply state is not normally issued from the external device. When the communication disabled state is detected and the predetermined condition is satisfied, the power state of the electronic device is automatically changed. Specifically, the power of the electronic device is automatically turned off or automatically switched to the power saving operation mode, so that unnecessary power is consumed by continuing the power on state of the electronic device or continuing the normal operation mode. Consumption can be prevented.
In addition, by storing the fluctuation information regarding the fact that the power supply state of the electronic device has been automatically changed and outputting the fluctuation information to a predetermined display means, the user can refer to the fluctuation information. Thus, it is possible to easily know that the electronic device has automatically changed its power supply state because a state in which communication with the external device is disabled occurs in the electronic device.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of a television broadcast recording system A provided with a hard disk recorder X according to an embodiment of the present invention. FIG. 2 is a procedure of power control processing executed in the hard disk recorder X. It is a flowchart explaining an example.
First, referring to FIG. 1, a television broadcast recording system A (hereinafter referred to as “system A”) provided with a hard disk recorder X (an example of electronic equipment, hereinafter referred to as “recorder X”) according to an embodiment of the present invention. (Abbreviated) will be described.
As shown in FIG. 1, the system A is roughly divided into a digital tuner device Y (hereinafter, abbreviated as “tuner device Y”) including a digital tuner 11 for receiving digital television broadcasts, a cable 4 And a recorder X that is communicably connected to the tuner device Y in a communication system compliant with the IEEE 1394 standard. In the system A configured as described above, the digital television broadcast data is recorded in the recorder X by transmitting the digital television broadcast data from the tuner device Y to the recorder X via the cable 4. Is possible. The tuner device Y may be provided in a television receiver (not shown). That is, the system A may be regarded as a system constituted by the recorder X and a television apparatus provided with the tuner device Y.

Here, a schematic configuration of the tuner device Y will be described.
The tuner device Y includes a digital tuner 11 for receiving a digital television broadcast, and data included in the digital television broadcast received by the digital tuner 11 such as video, audio, and electronic program information (EPG). A data separation unit 12 for separating data, a system decoder 13 for restoring various data separated by the data separation unit 12, and an IEEE 1394 interface 14 for communicating with an external device by a communication method compliant with the IEEE 1394 standard ( (Hereinafter abbreviated as “I / F 14”) and a microcomputer 15 that includes a CPU, a RAM, and the like and controls the tuner device Y in an integrated manner. The tuner device Y includes other components included in a normal digital tuner device in addition to those shown in FIG. 1, but the description thereof is omitted here.
In the tuner device Y, the digital television broadcast and the electronic program information are acquired by the digital tuner 11, the data separator 12 and the system decoder 13. Here, the digital tuner 11, the data separator 12, and the system decoder 13 correspond to a television broadcast receiving means and an electronic program information acquiring means.
Also, the tuner device Y has a function of causing the recorder X to record a program designated in accordance with the electronic program information by an operation input to an operation unit (not shown) by a user, as in the conventional device. Yes. Specifically, as described above, a power-on instruction and a recording start instruction are transmitted to the recorder X at the start of recording of the program, and a recording end instruction and a power-off instruction are transmitted to the recorder X at the end of recording.

Next, a schematic configuration of the recorder X will be described.
The recorder X includes an IEEE 1394 interface 21 (hereinafter abbreviated as “I / F 21”) for communicating with an external device by a communication method compliant with the IEEE 1394 standard, digital television broadcasting received by the I / F 21, etc. , A data storage unit 23 for storing various data such as a detection time and a variation time, which will be described later, a time measuring device 24 for measuring the current time and the elapsed time from a predetermined time point, and a later description. A display panel 25 for displaying various kinds of information such as fluctuation information, a microcomputer 26 having a CPU, a RAM, and the like for overall control of the recorder X, and a power supply to each of the components. And a power supply control unit 27. The recorder X includes other components included in a normal hard disk recorder in addition to those shown in FIG. 1, but the description thereof is omitted here.
According to the recording start instruction received from the tuner device Y, the recorder X configured as described above executes a recording process for recording the digital television broadcast received by the I / F 21 on the hard disk 22; The recording process is ended according to the recording end instruction.

The recorder X has a normal operation mode in which power is applied to the hard disk 22 and the display panel 25, and a power saving operation mode in which power consumption is reduced by turning off the power to the hard disk 22 and the display panel 25. And have. The recorder X is switched from the power saving operation mode to the normal operation mode according to the power-on command transmitted from the tuner device Y, and is switched from the normal operation mode to the power saving operation mode according to the power-off command.
Conventionally, after the operation mode of the recorder X is switched to the normal operation mode by receiving the power-on command, the tuner device maintains the normal operation mode unless the power-off command is received. When a state where communication with Y occurs cannot be performed, that is, when a state where the power-off command cannot be received occurs, it is a problem that power is wasted.
However, in the recorder X according to the embodiment of the present invention, even if the power-off command is not received from the tuner device Y, the operation mode of the recorder X is automatically switched if a predetermined condition is satisfied. .

Hereinafter, an example of the procedure of the power control process executed by the microcomputer 26 in the recorder X will be described with reference to the flowchart of FIG. Here, S1, S2,... In FIG. 2 represent processing procedure (step) numbers. The following power control process is executed when the recorder X is waiting in the power saving operation mode.
First, in step S1, the microcomputer 26 determines whether or not a power-on command has been input. Specifically, whether a power-on command is received from the tuner device Y via the cable 4 or whether a power-on command is input by a predetermined operation input to the recorder X by the user. To be judged. The process of step S1 is repeatedly executed until the power-on command is input (No side of S1). If it is determined that the power-on command is input (Yes side of S1), the process proceeds to step S2. Transition.

  In step S2, the microcomputer 26 switches the operation mode of the recorder X from the power saving operation mode to the normal operation mode. Specifically, when the power supply control unit 27 is controlled by the microcomputer 26, the power supply control unit 27 supplies power to the hard disk 22, the display panel 25, and the like.

In subsequent step S3, the microcomputer 26 determines whether the power-on command is received from the tuner device Y or is input by a predetermined operation input by the user.
If it is determined that the power-on command is received from the tuner device Y (Yes side of S3), the process proceeds to step S4. On the other hand, when it is determined that the power-on command is input by a predetermined operation input by the user (No side of S3), the process proceeds to step S21. Here, when a power-on command is input by a predetermined operation input to the recorder X by the user, a process (S2) of switching the operation mode of the recorder X from the power saving operation mode to the normal operation mode is executed. The microcomputer 26 corresponds to state manual changing means. The processing after step S21 will be described later.

  In step S4, the time measuring device 24 is controlled by the microcomputer 26, so that the time measuring device 24 starts measuring time. Thereby, the time from when the operation mode of the recorder X is switched from the power saving operation mode to the normal operation mode, that is, the time after the power state of the recorder X is changed, is started.

Thereafter, in step S5, it is determined whether or not a power-off command is input from the tuner device Y.
Here, if it is determined that the power-off command has been input (Yes in S5), the process proceeds to step S12, and the microcomputer 26 controls the power control unit 27, whereby the recorder After the operation mode of X is switched from the normal operation mode to the power saving operation mode, the process returns to step S1 and the power supply control process is repeatedly executed.
On the other hand, if it is determined that the power-off command has not been input (No side in S5), the process proceeds to step S6.

In step S6, the microcomputer 26 determines whether or not there is a problem in the communication state between the recorder X and the tuner device Y. Specifically, the determination is made on the basis of the presence or absence of a bus reset signal generated in the microcomputer 26 when a problem occurs in communication with the tuner device Y. The bus reset signal is sent from the I / F 21 to the microcomputer 26 when a failure in communication with the tuner device Y is detected by the I / F 21 that performs communication using a communication method compliant with the IEEE 1394 standard. Entered.
Here, if there is no problem in communication with the tuner device Y (No side in S6), the process proceeds to step S5, and it is determined that there is a problem in communication with the tuner device Y. If it is (Yes in S6), the process proceeds to step S7.

In step S7, the microcomputer 26 determines whether or not a communication disabled state in which communication is not possible between the recorder X and the tuner device Y has occurred. Specifically, when the I / F 21 detects that the recorder X and the tuner device Y are not normally connected by the cable 4, the recorder X is input to the microcomputer 26. Whether or not the communication disabled state has occurred is determined based on the communication disabled state signal. Here, the I / F 21 when detecting the communication disabled state corresponds to the communication disabled state detecting means.
If it is determined that the communication disabled state has occurred (Yes in S7), the process proceeds to step S8, but if it is determined that the communication disabled state has not occurred (S7). The process proceeds to step S5. Here, it is assumed that the communication connection between the recorder X and the tuner device Y is disconnected due to the cable 4 being disconnected. Therefore, the process proceeds to step S8. In the present embodiment, the example in which the recorder X and the tuner device Y are connected by the cable 4 has been described. However, the recorder X and the tuner device Y are connected to be communicable by wireless communication. Such a configuration is also conceivable as another embodiment.

In step S8, the microcomputer 26 reads the current time from the timing device 24, and stores it in the data storage unit 23 as the detection time of the notification disabled state.
In the subsequent step S9, the microcomputer 26 determines whether or not the time started by the time measuring device 24 in the step S4 has reached a predetermined time or more. Here, the predetermined time may be initially set in the recorder X, or may be arbitrarily set by the user.
Here, when it is determined that the time is less than the predetermined time (No side of S9), the process proceeds to step S10, and when it is determined that the time is equal to or longer than the predetermined time ( On the Yes side of S9, the process proceeds to step S11.

In step S10, the microcomputer 26 determines whether or not the power-off command is received from the tuner device Y. As described above, even after the disconnection of the cable 4 is detected, by continuously monitoring the reception of the power-off command from the tuner device Y, it corresponds to the case where the connection of the cable 4 is restored. be able to.
Here, when it is determined that the power-off command has been received (Yes side of S10), the process proceeds to step S12, and the power source control unit 27 is controlled by the microcomputer 26. After the operation mode of the recorder X is switched from the normal operation mode to the power saving operation mode, the processing returns to step S1. On the other hand, if it is determined that the power-off command has not been received (No side in S10), the process proceeds to step S9.

  On the other hand, in step S11 which is executed when it is determined in step S9 that the time is not less than a predetermined time, the current time read from the time measuring device 24 by the microcomputer 26 is determined by the microcomputer 26. It is stored in the data storage unit 23. The current time at this time is stored as a fluctuating time at which the power state of the recorder X is automatically fluctuated in step S12 described later. Here, the detection time and the variation time correspond to variation information related to the change of the operation mode of the recorder X in the power supply control process, and the data storage unit 23 for storing the variation information stores the variation information. Corresponds to means.

In step S12, the power control unit 27 is controlled by the microcomputer 26, whereby the operation mode of the recorder X is switched from the normal operation mode to the power saving operation mode. Thereafter, the process returns to step S1.
As described above, in the recorder X, even if the communication disabled state occurs in step S7 and the power-off command is not received, the predetermined time after the operation mode is switched to the normal operation mode in step S2. When the condition that the time elapses is satisfied, the operation mode is automatically switched to the power saving operation mode by the microcomputer 26, so that unnecessary power consumption is prevented in the recorder X. Here, the microcomputer 26 for automatically changing the power supply state of the recorder X when the condition is satisfied corresponds to a power supply state automatic changing means.
In this embodiment, an example in which the operation mode of the recorder X is automatically switched has been described. However, it is also conceivable as another embodiment that the power of the recorder X is switched automatically. Also in this case, useless power consumption in the recorder X is prevented.

  By the way, in step S21 executed when it is determined in step S3 that the power-on command is input by a predetermined operation input by the user, the data storage unit 23 stores the detected time and The microcomputer 26 determines whether or not the variation time is stored. If it is determined that the detection time or the variation time is stored (Yes side of S21), the process proceeds to step S22, and it is determined that the detection time or the variation time is not stored. Then (No side of S21), the power supply control process is terminated.

In step S <b> 22, the microcomputer 26 reads the detection time and the variation time from the data storage unit 23 and outputs them to the display panel 25. That is, the detection time and the variation time are displayed on the display panel 25 only when it is determined in step S3 that the power-on command is input by a predetermined operation input by the user. The Here, the microcomputer 26 when executing such output processing corresponds to the fluctuation information output means.
Thus, for example, fluctuation information such as the detection of the communication disabled state, the detection time thereof, the automatic switching of the operation mode and the fluctuation time thereof is displayed on the display panel 25 by the microcomputer 26. Therefore, the user can easily obtain the information. The display panel 25 is an example of a predetermined display means, and is not limited thereto. The variation information is output to a television receiver (not shown) connected to the recorder X, and the television receiver receives the change information. An OSD display can be considered as another embodiment. Further, it is possible to simply display that the communication disabled state is detected or the operation mode is automatically switched by turning on or blinking an LED or the like provided on the display panel 25. Absent.
Thereafter, in step S23, the fluctuation information such as the detection time and the fluctuation time stored in the data storage unit 23 is erased, and the power supply control process is terminated. The variation information may be accumulated as a history in the data storage unit 23. In this case, it may be configured to determine whether or not the variation information accumulated in the data storage unit 23 has been updated in the step S21.

  In the embodiment, the example in which the operation of the recorder X is controlled by the tuner device Y has been described. In this embodiment, the case where the operation of the tuner device Y is controlled by the recorder X will be described. In this case, the tuner device Y corresponds to the electronic apparatus according to the present invention. As described above, the tuner device Y may be provided in a television receiver (not shown).

  Specifically, by sending a power-on command from the recorder X to the tuner device Y, the operation mode of the tuner device Y is switched from the power saving operation mode to the normal operation mode. When the power-off command is transmitted to the device Y, the operation mode of the tuner device Y is switched from the normal operation mode to the power saving operation mode. Each switching process is executed by the microcomputer 15. Here, the power saving operation mode of the tuner device Y refers to a state in which, for example, the digital tuner 11, the data separation unit 12, the system decoder 13, and the like are turned off. Therefore, the recorder X can receive and record the digital television broadcast from the tuner device Y via the cable 4 only when the tuner device Y is operating in the normal operation mode.

Hereinafter, when the recorder X transmits the power-on command to the tuner device Y, the operation mode of the tuner device Y is switched to the normal operation mode, and then the recorder 4 is disconnected. A process executed by the microcomputer 15 of the tuner device Y when the communication connection with the tuner device Y is disconnected will be described.
First, also in this case, as described in the above embodiment, a condition that a predetermined time elapses after the disconnection of the communication connection by the cable 4 is detected and the tuner device Y is switched to the normal operation mode. Can be considered to automatically switch the operation mode of the tuner device Y to the power saving operation mode. However, in this case, the program being recorded by the recorder X may be interrupted even when the disconnection of the communication connection by the cable 4 is temporary or when the detection of the disconnection is a false detection. .

Therefore, in the tuner device Y, based on the electronic program information acquired by the digital tuner 11, the data separator 12 and the system decoder 13, the program currently being received by the tuner device Y, that is, the recorder X is stored in the tuner device Y. It can be considered that the normal operation mode is maintained until the program being transmitted ends. At this time, the program being transmitted to the recorder X is identified by the microcomputer 15 based on the electronic program information. Here, the microcomputer 15 when executing such identification processing corresponds to program identification means.
That is, in the tuner device Y according to the present embodiment, after the communication impossible state with the recorder X occurs, the condition that the program being transmitted to the recorder X is terminated is satisfied, and then the microcomputer 15 performs the above-described operation. The operation mode of the tuner device Y is switched from the normal operation mode to the power saving operation mode. Here, the microcomputer 15 at the time of executing the switching process corresponds to power state automatic variation means.
Thereby, when the disconnection of the communication connection by the cable 4 is temporary, or when the detection of the disconnection is a false detection, the recorder X can record the program until the end. Moreover, in the tuner device Y, excessive power consumption after the end of the program is surely prevented.

Further, the communication disabled state with the recorder X has occurred, the detection time, the content of the program at the time of detection, and the operation mode of the tuner device Y are automatically switched from the normal operation mode to the power saving operation mode. The fluctuation information such as the switching time and the contents of the program at the time of the switching is stored by the microcomputer 15 in a predetermined storage unit (not shown, an example of the fluctuation information storage means) provided in the tuner device Y. The
In the tuner device Y, when the user next inputs a power-on command to the tuner device Y, variation information stored in the predetermined storage unit (not shown) is provided in the tuner device Y. The microcomputer 15 outputs the data to a predetermined display device (not shown) or a television receiver (not shown) to which the tuner device Y is connected. Here, the microcomputer 15 when executing such output processing corresponds to the fluctuation information output means.
As a result, the user can easily know, for example, which program is being recorded so that communication with the recorder X is disabled.

1 is a block diagram showing a schematic configuration of a television broadcast recording system provided with a hard disk recorder according to an embodiment of the present invention. The flowchart explaining an example of the procedure of the power supply control process performed in the hard disk recorder which concerns on embodiment of this invention.

Explanation of symbols

X ... Hard disk recorder (an example of electronic equipment)
Y ... Digital tuner device (an example of electronic equipment)
DESCRIPTION OF SYMBOLS 11 ... Digital tuner 12 ... Data separation part 13 ... System decoder 14 ... IEEE1394 interface 15 ... Microcomputer 21 ... IEEE1394 interface 22 ... Hard disk 23 ... Data storage part (an example of fluctuation information storage means)
24 ... Time measuring device 25 ... Display panel 26 ... Microcomputer 27 ... Power supply control unit

Claims (8)

An electronic device whose operation is controlled by an external device by a communication method compliant with the IEEE 1394 standard,
A communication disabled state detecting means for detecting a communication disabled state due to disconnection of a communication path with the external device or communication abnormality;
On condition that the communication-disabled state is detected by the communication-disabled state detection means, after the predetermined condition is satisfied after the power supply state of the electronic device is changed by an instruction from the external device, the electronic device Automatic power supply state changing means for automatically changing the power supply state of
An electronic device characterized by comprising:   The electronic device according to claim 1, wherein the power supply state automatic changing means switches power on / off of the electronic device.   The electronic device according to claim 1, wherein the power supply state automatic variation means switches between a normal operation mode and a power saving operation mode of the electronic device.   The electronic device according to claim 1, wherein the predetermined condition is that a predetermined time elapses after a power state of the electronic device is changed by an instruction from the external device. A television broadcast receiving means for receiving a television broadcast;
Electronic program information acquisition means for acquiring electronic program information of the television broadcast;
Program identifying means for identifying a television broadcast program being received by the broadcast receiving means based on the electronic program information obtained by the electronic program information obtaining means;
Further comprising
The electronic device according to claim 1, wherein the predetermined condition is an end of a television broadcast program identified by the program identifying means. Fluctuation information storage means for storing fluctuation information relating to a change in the power supply state of the electronic device by the power supply state automatic fluctuation means;
Fluctuation information output means for outputting the fluctuation information stored in the fluctuation information storage means to a predetermined display means;
The electronic device according to claim 1, further comprising: Further comprising state manual variation means for varying the power state of the electronic device by a predetermined operation input,
7. The electronic apparatus according to claim 6, wherein the fluctuation information output means outputs the fluctuation information to the predetermined display means when the power state of the electronic apparatus is changed by the state manual fluctuation means.   The change information indicates that the power supply state of the electronic device has been changed by the power supply state automatic change means, the change time, the contents of the predetermined program at the time of change, and the communication disabled state detection means by the communication disabled state detection means. The electronic device according to claim 6, comprising one or a plurality of pieces of information that are detected, the detection time, and the content of the predetermined program at the time of detection.

Images