JPH07250386A - Electronic device control method - Google Patents

Abstract

PURPOSE:To prevent mis-operation of each electronic equipment by checking and storing whether or not a remote control signal from an electronic device as a center is received in advance. CONSTITUTION:Whether or not a remote control signal from an electronic device as a center is received by an electronic device other than the center is checked and stored in advance. Upon the receipt of the remote control signal, the electronic device as the center outputs a signal corresponding to the received remote control signal to electronic devices not receiving the remote control signal via a bus and does not output the signal corresponding to the received remote control signal to the electronic device receiving the remote control signal generated by the electronic device as the center via a bus. Thus, malfunction of each electronic device is prevented.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a case where a plurality of AV devices such as a television receiver (TV), a video tape recorder (VTR) and a laser disc player (LDP) are connected as an AV system by a D2B bus or the like. In the above, the present invention relates to an electronic device control method suitable for controlling each AV device.

[0002]

2. Description of the Related Art FIG. 13 shows a configuration example of a conventional AV system. In this embodiment, a television receiver (TV) 81 as an AV center, a video tape recorder (VTR) 82, and a laser disc player (LDP) 83 are connected to each other by a D2B bus 84. The TV 81 is a system remote controller 91.
In response to the command from VTR82 and LDP83 D2
Controlled via the B bus 84, the video signal received by the TV 81 is recorded on the magnetic tape mounted on the VTR 82, or the recorded video signal is reproduced to display the TV 8
1 can be supplied and displayed. Alternatively, it is possible to reproduce the laser disk mounted on the LDP 83 and display the reproduced image on the TV 81, or record the video signal on the VTR 82.

Further, the VTR 82 and the LDP 83 are respectively dedicated VTR remote controllers 92 and LDP remote controllers 93.
And operate the VTR remote controller 92 to
It is possible to directly send a remote control signal to R82 and cause the VTR 82 to perform a desired operation. Further, it is possible to operate the LDP remote controller 93 to directly transmit a remote controller signal to the LDP 83 and cause the LDP 83 to execute a desired operation.

By the way, the TV 81 as an AV center
In many cases, not only can the remote controller signal from the system remote controller 91 be received, but also the remote controller signal output from the VTR remote controller 92 or the LDP remote controller 93 can be received. In this way, since it is sufficient to always operate each remote controller toward the TV 81, the operability is improved.

The TV 81 has a VTR remote controller 92 and an LD.
When a remote control signal is received from the P remote control 93, a signal corresponding to this remote control signal is output to the VTR 82 and the LDP 83 via the D2B bus 84. This allows
The VTR 82 and LDP 83 are VTR remote controllers 92 and L
A desired operation can be executed without directly receiving a remote control signal from the DP remote controller 93.

[0006]

However, in this way, the TV 81 is not limited to the system remote controller 91, but the V 81
If the remote controller signal generated by the TR remote controller 92 or the LDP remote controller 93 is also received,
A state in which a signal is double input to R82 and LDP83 occurs.

For example, when the VTR remote controller 92 is operated to transmit a remote control signal to the TV 81, this remote control signal is not only received by the TV 81 but also the VTR.
It is also received at 82. Usually, TV81 is VTR
V after receiving the remote control signal from the remote controller 92 for
It takes some time to output a signal corresponding to the remote control signal to TR82. Therefore, VTR
82 receives D2B when a certain time has passed since the remote control signal from the VTR remote control 92 was directly received.
The signal of the same content is received from the TV 81 via the bus 84.

As a result, for example, when the remote control signal output from the VTR remote control 92 is a signal for instructing the VTR 82 to pause, the VTR remote control 92
Even if the VTR 82 is once in the pause state by directly receiving the remote control signal from the VTR 82, the pause signal is supplied again via the D2B bus 84. Therefore, the VTR 82 already in the pause state at this time When this pause signal is received, the pause will be canceled.

Such a malfunction can occur in the LDP 83 as well.

The present invention has been made in view of such a situation, and is intended to prevent malfunction of each electronic device constituting the system.

[0011]

According to a first aspect of the present invention, there is provided an electronic device control method, wherein the electronic device control method is connected via a common bus so as to form a system, and is independently controlled by remote control signals from respective remote control devices. In an electronic device control method for controlling a plurality of controllable electronic devices, a remote control signal is generated from an electronic device that is a center in a system of the electronic devices, and the electronic device other than the center among the electronic devices is an electronic device serving as the center. The electronic device as the center preliminarily inspects and stores whether or not the remote control signal generated by the electronic device as the center is received, and when the electronic device as the center subsequently receives the remote control signal from the remote control device, the electronic device as the center generates the remote control signal. To the electronic device that does not receive, outputs a signal corresponding to the received remote control signal via the bus,
The electronic device that receives the remote control signal generated from the electronic device as the center does not output a signal corresponding to the received remote control signal via the bus.

According to a second aspect of the present invention, there is provided an electronic device control method, wherein a plurality of electronic devices which are connected via a common bus so as to constitute a system and which can be independently controlled by remote control signals from respective remote control devices. In an electronic device control method for controlling a device, an electronic device receives a remote control signal directly, and then, when a signal is received via a bus after a predetermined reference time or more that has been set in advance elapses, the electronic device stops the bus. If the signal corresponding to the signal received via the bus is executed and the signal is received via the bus before the reference time has elapsed, the signal received via the bus is the same signal as the remote control signal received directly. At one point, the signal received over the bus is effectively ignored, and the signal received over the bus becomes
When the signal is different from the directly received remote control signal, the processing corresponding to the signal received via the bus is executed.

[0013]

In the electronic equipment control method according to the first aspect, whether or not the remote control signal generated by the electronic equipment as the center is received by the electronic equipment other than the center is preliminarily inspected and stored. Then, when the electronic device as the center subsequently receives the remote control signals from the respective remote control devices, for the electronic devices that do not receive the remote control signal generated by the electronic device as the center,
The signal corresponding to the received remote control signal is output via the bus, but the electronic device receiving the remote control signal generated by the electronic device as the center sends the signal corresponding to the received remote control signal via the bus. Do not output. Therefore,
Malfunction of each electronic device is prevented.

According to another aspect of the electronic device control method of the present invention, each electronic device receives the remote control signal directly, and then, after a predetermined reference time or more that has been preset elapses, through the bus. When a signal is received, the processing corresponding to the signal received through the bus is executed, but when the signal is received through the bus before the reference time has elapsed, the signal received through the bus is When it is the same signal as the remote control signal received directly, the signal received via the bus is substantially ignored, and when the signal received via the bus is different from the remote control signal received directly, the bus is switched The process corresponding to the signal received via is executed. Therefore, malfunction is prevented.

[0015]

Embodiments AV to which the electronic device control method of the present invention is applied
In the system, a television receiver (TV) functioning as an AV center is an AV receiver as shown in FIG.
The maximum configuration of the system is stored in advance. The user can select only the AV equipment that he / she actually uses from the maximum configurations stored as shown in FIG. 1 to form an AV system having the configuration shown in FIG. 2, for example. .

That is, the AV system shown in FIG.
V, 4 VTRs, 1 video tuner (VT
U), one multi-disc player (MDP), one audio amplifier (AU-AMP), one audio tuner (A.TU), one CD player (C)
D) One mini disk device (MD), one tape deck (TC), which is a total of 12 AV devices.

On the other hand, in the embodiment of FIG.
The VTR 4 in FIG. 1 is omitted, and the MDP is directly connected to the terminal 1 of the TV. In addition, as shown in FIG. TU is omitted and VTR2 is changed to MDP. In addition, the VTR3, A. TU, CD, MD, and TC are
The configuration is omitted.

As described above, it is possible to complete the AV system with any AV device within the range of the structure shown in FIG. 1 (the structure stored in advance in the built-in memory). In the case of this embodiment, for example, as shown in FIG.
One AV center, VTR1 (first VTR) to VT
It is assumed that an AV system is configured by four VTRs of R4 (fourth VTR), one video tuner and one MDP. That is, specifically, AV
TV1 as the center, and the first to fourth VTRs
As the VTRs of VTR2 to VTR5,
As a video tuner, the video tuner 6 is M
As DPs, MDPs 7 are connected to the corresponding positions. Then, these AV devices are mutually connected by the D2B bus 11.

Of these AV devices, the AV center 1 and the MDP 7 are arranged so as to be exposed as shown in FIG. 4, but the other VTRs 2 to 5 and the video tuner 6 are arranged in the AV rack 21. It is assumed that they are housed together in. Therefore, AV center 1 and MDP7
For the respective remote control devices 22a and 22
Although it is possible to directly transmit the remote control signal by b, the VTR2 to VTR accommodated in the AV rack 21 can be transmitted.
5 and the video tuner 6 are in a state in which they cannot receive the remote control signals even if they are transmitted from the dedicated remote control devices 22c to 22g.

The AV center 1 has a structure as shown in FIG. 5, for example. The remote control light-receiving unit 52 is adapted to receive not only a remote control signal from the remote control 22a dedicated to the AV center 1 but also remote control signals from the remote controls 22b to 22g corresponding to the VTR2 to VTR5, the video tuner 6, or the MDP7. There is. The remote control light receiving unit 52 outputs a signal corresponding to the received remote control signal to the remote control processing unit 45 of the TV microcomputer 31.

As shown in FIG. 4, the remote control light emitting section 53 is provided so as to project from the front surface of the AV center 1.
Even when another AV device is arranged side by side with the AV center 1, the other AV device can receive the remote control signal.

The initialization button 51 is operated when executing an initialization operation described later, and the input control section 4 of the TV microcomputer 31 is operated.
When the signal corresponding to the operation of the reset button 51 is received, the signal 4 is output to the CPU 43 via the internal bus. The CPU 43 uses the program RO
The initialization process and other processes are executed in accordance with the program stored in M41. The program control RAM 42 appropriately stores data necessary for performing various processes.

The TV microcomputer 31 has an OSD control unit 4
6, the OSD control unit 46 reads out necessary data from the font ROM 47 as necessary and outputs, for example, an RGB signal corresponding to a predetermined message or the like. The SIO controller 48
The D2B microcomputer 54 is connected to the D2B microcomputer 54.
Are further connected to the D2B bus 11. Also, I
The 2C control unit 49 is connected to the AV switch 55, the video processing / control IC 56, the audio processing / control IC 57, and the tuner 58 via the I2C bus.

Next, the operation of the AV system having the configuration shown in FIG. 3 will be described.

When the initialization button 51 of the AV center 1 is operated, the CPU 43 executes the initialization process shown in the flowchart of FIG. First, in step S1, a system configuration grasping process is executed. That is, the AV center 1
Initially, assuming that an AV system having the configuration shown in FIG. 1 is configured, a signal is output from each terminal as needed, and processing for confirming the AV equipment connected to each terminal is executed. By executing this processing, it is possible to confirm that the AV system actually configured has the configuration shown in FIG.

Next, in step S2, each AV device
The initialization process ends after the process of determining whether the V rack 21 is accommodated is executed.

FIG. 7 shows a first embodiment of the process in step S2 of FIG. In this example,
First, in step S11, an infrared remote control signal is output to the first VTR (VTR2), and the same signal is output via the D2B bus 11 as an AV bus.

That is, the CPU 43 controls the remote controller processing unit 45.
The remote control light emitting unit 53 is controlled via the to generate a remote control signal by infrared rays. AV equipment that is not housed in the AV rack 21 can receive this remote control signal, but AV equipment that is housed cannot receive this remote control signal.

Further, the CPU 43 outputs a signal to the D2B microcomputer 54 via the SIO control section 48, and outputs a signal corresponding to the remote control signal output from the remote control light emitting section 53.
Instruct to output via the D2B bus 11. D2
In response to this command, the B microcomputer 54 responds to the D2B bus 1
A signal corresponding to the remote control signal output from the remote control light emitting unit 53 is output to the D2B bus 11 via 1.

Next, in step S12, the CPU 43
For VTR2, two routes (remote control and D2B
Bus) to see if the same signal was received on the D2B bus 1
Inquire via 1. That is, the CPU 43 uses the SIO
The D2B microcomputer 54 is controlled via the control unit 48,
Via the B bus 11, the VTR 2 is caused to output an inquiry as to whether or not the same signal has been received from the two routes.

When the VTR 2 receives the inquiry generated in step S12, the VTR 2 outputs the answer corresponding to the inquiry to the AV center 1 via the D2B bus 11. The AV center 1 uses the D2B microcomputer 54 to
Receive this answer.

In step S13, this answer is 2
Judging whether or not it indicates that two signals have been received,
When it is determined that the two signals are received, the process proceeds to step S14, and the first VTR (VTR
2) is stored in the RAM 42 as being arranged outside the AV rack 21. If it is determined in step S13 that the VTR 2 does not receive the two signals, the process proceeds to step S15 and the first V
The TR (VTR2) is stored in the RAM 42 as being arranged in the AV rack 21.

Next, in step S16, the second VTR
An infrared remote control signal is output to (VTR3) and the same signal is sent out via the D2B bus 11. Then, in step S17, the second V
The TR (VTR3) is queried whether the same signal is received via the two routes. Further, in step S18, it is determined whether or not the reply from the second VTR (VTR3) is the reception of two signals.

When the reply indicates that two signals have been received, the process proceeds to step S19 and the second VTR (V
TR3) is stored in the RAM 42 as being arranged outside the AV rack 21. In addition, step S18
If it is determined that the two signals have not been received, the process proceeds to step S20 and the second VTR
The (VTR3) is stored in the RAM 42 as being arranged in the AV rack 21.

Furthermore, the process proceeds to step S21, where MD
An infrared remote control signal is output to P7, and the same signal is sent out via the D2B bus 11. Next, in step S22, the MDP 7 is set to 2
Queries whether the same signal is received from two paths. Then, in step S23, the response from the MDP 7 is read, and when this response indicates that two signals are received, the process proceeds to step S24 and the MD
P7 is stored in the RAM 42 as being arranged outside the AV rack 21. If it is determined in step S23 that the two signals have not been received, the process proceeds to step S25, where the MDP 7 sets the AV
RAM4 as being arranged in the rack 21
Store in 2.

Next, in step S26, other AV
Device, i.e. in the case of the embodiment of FIG. 3, a third VTR (VT
The same processing is executed for R4), the fourth VTR (VTR5), and the video tuner 6.

By executing such processing, whether each AV device is arranged outside the AV rack 21, that is, is it in a state where it can receive a remote control signal from a dedicated remote control device? Alternatively, it can be inspected and stored whether it is in a state of being housed in the AV rack 21, that is, in a state of not being able to directly receive a remote control signal from a dedicated remote control device.

In the case of the embodiment shown in FIG. 4, the MDP 7 is arranged outside the AV rack 21 and is ready to receive the remote control signal from the dedicated remote control device 22b.
The first VTR (VTR2) through the fourth VTR (VTR
5), and the video tuner 6 are housed in the AV rack 21 and dedicated remote control devices 22c to 22g, respectively.
It is confirmed that the remote control signal from can not be received.

FIG. 8 shows another processing example of step S2 in FIG. In the embodiment shown in FIG. 8, in step S41, the signal "Send remote control test signal" is sent to the first VTR (VTR2) via the D2B bus 11. That is, CPU
43 is a D2B microcomputer 54 via the SIO control unit 48.
To control D2B to the first VTR (VTR2).
This message is output via the bus 11.

Next, in step S42, the first VTR
An infrared remote control signal is sent to (VTR2). That is, the CPU 43 controls the remote control light emitting unit 53 via the remote control processing unit 45 to generate a remote control signal.

Next, in step S43, the first VTR
The (VTR2) is inquired as to whether or not a remote control signal (test signal) is received via the D2B bus 11. When the first VTR (VTR2) receives this inquiry, it sends the answer corresponding to this inquiry to the D2B.
Output to the AV center 1 via the bus 11.

In step S44, the first VTR
It is determined whether or not the response from (VTR2) indicates that the remote control signal has been received. When this response indicates that the remote control signal has not been received, the process proceeds to step S45 and the first The VTR (VTR2) is stored in the RAM 42 as if it is housed inside the AV rack 21. On the other hand, in step S44,
When the answer indicates the reception of the remote control signal, the process proceeds to step S46, and the first VTR (VTR2) is stored in the RAM 42 as if it is located outside the AV rack 21.

Next, in step S47, a signal "Send remote control test signal from now on" is output to the MDP 7 via the D2B bus 11. Then, in step S48, an infrared remote control signal is sent to the MDP 7. Next, in step S49, the MDP 7 is queried whether or not a remote control signal (test signal) is received via the D2B bus 11.

Then, in step S50, MDP7
It is determined whether or not the response of “NO” indicates reception of the remote control signal, and when it does not indicate reception of the remote control signal, the process proceeds to step S51, where the MDP 7 is stored in the RAM 42 as being stored in the AV rack 21. Remember. On the other hand, in step S50, the answer is
When the reception of the remote control signal is indicated, step S52
Then, the MDP 7 is stored in the RAM 42 as if it is arranged outside the AV rack 21.

In step S53, another A
The same process is executed for the V device.

As described above, whether or not each AV device is housed in the AV rack 21, that is, whether or not a remote control signal from the corresponding remote control device can be received is inspected and stored. be able to.

FIG. 9 shows the format of one frame of data transmitted via the D2B bus 11.
As shown in the figure, first, a start bit indicating the start of a frame is arranged, and then a mode bit is arranged. This mode bit represents the transfer rate after the mode bit and the maximum frame length.

Next to the mode bit, a master address, which is the address of the AV equipment transmitting this data, is arranged, and next to it, a parity code P for checking the error of this master address is arranged.

Further next, a slave address for designating an AV device for receiving this transmission data is arranged. A parity code P for checking an error is also added to this slave address. Next to this parity code, an acknowledge A that the AV device designated by this slave address outputs when it receives this slave address is arranged.

Further, a control bit is arranged next to the control bit, and a parity P and an acknowledge A are added to the control bit.

Further to that, data bits are arranged. This data bit is followed by EOD (END
OF DATA BIT) is arranged. This E
One bit is added to each byte of the data field, and the OD is set to 1 in the last byte and to 0 otherwise.

Parity P and acknowledge A are added to the end of this data field.

A plurality of data bits shown in FIG. 9 are collected to form a data field as shown in FIG. The first textHD represents the version of the D2B bus 11. The next HDOPR represents the type of contents of the data field (eg, command, status request command, reply). The next HDADR is
It represents the subdevice address of the destination. This sub device address is an address that designates a tuner, an amplifier, a monitor, etc. of the partner device designated by the slave address.

Further, the next OPC is an instruction word,
OPRn is a word that modifies this instruction. For example, when transmitting the command "Become a slave", OPC is AFH.
And OPR is set to 20H.

OPRn represents a plurality of OPRs.

When the transmission data shown in FIG. 9 is reply data, a data field formed by collecting a plurality of data bits of each frame is as shown in FIG. That is, the configuration is basically the same as that shown in FIG. 10, but a term is added in addition to that shown in FIG.
This term (terminator) indicates the type of reply such as completed, unfinished, in process, or unsupported.

In the above embodiment, the arrangement state of the other AV equipment is detected and stored in advance on the AV center 1 side. However, in this case, the detected state needs to be always stored. There is. Therefore, the memory capacity is required accordingly.

Therefore, for example, FIG.
It is also possible to prevent malfunctions by executing the processing shown in the flowchart of FIG.

That is, first, in step S71, it is determined whether or not the remote control signal is received. If the remote control signal is not received, the process proceeds to step S72 and it is determined whether or not a signal is received from the D2B bus 11. To do. When no signal is received from the D2B bus 11, step S71
Return to. That is, the processes of steps S71 and S72 are repeatedly executed until a remote control signal or a predetermined signal from the D2B bus 11 is received.

When it is determined in step S71 that the remote control signal is received, the process proceeds to step S73, the process corresponding to the received signal is executed, and step S
Return to 71.

If it is determined in step S72 that the signal is received via the D2B bus 11, the process proceeds to step S74, and the time when the signal is received via the D2B bus 11 is the time when the remote control signal is received immediately before that. After that, it is determined whether or not a predetermined time (for example, 200 ms) set in advance has elapsed. When a signal is received via the D2B bus 11 after 200 ms or more have passed since the remote control signal was received, the process proceeds to step S73, the process corresponding to the received signal is executed, and the process returns to step S71.

In step S74, before 200 ms or more has elapsed from the time when the remote control signal was received,
When it is determined that the signal is received via the D2B bus 11, the process proceeds to step S75, and the remote control signal and D2
It is determined whether or not the signal currently received via the B bus 11 is the same signal. If they are different signals, the process proceeds to step S73, the process corresponding to the signal received via the D2B bus 11 is executed, and step S7
Return to 1.

On the other hand, in step S75,
When it is determined that the remote control signal received immediately before and the signal currently received via the D2B bus 11 are the same signal, the processing corresponding to the signal received via the D2B bus 11 is particularly executed. No, that is, the received signal is ignored, and the process returns to step S71.

For example, in FIG. 4, when the remote controller 22b dedicated to the MDP 7 is operated to output a remote controller signal, this remote controller signal is transmitted to the MDP 7 and the AV center 1.
Received by. There is a slight delay time from when the MDP 7 receives the remote control signal until the AV center 1 outputs a signal corresponding to this remote control signal via the D2B bus 11, but this delay time is usually the maximum. But 2
It is within 00 ms. Therefore, for the same signal within the reference time of 200 ms, it is determined that the substantially same signal is input redundantly, and the signal input later is ignored to prevent malfunction.

The case where the present invention is applied to an AV system including AV equipment has been described above as an example, but the present invention can also be applied to an electronic equipment system including electronic equipment other than AV equipment. It is possible.

[0066]

As described above, according to the electronic device control method of the first aspect, whether or not the electronic device other than the center has received the remote control signal generated by the electronic device as the center is checked in advance. Since the information is stored, it is possible to prevent malfunction of each electronic device.

According to the electronic equipment control method of the second aspect, when the signal is received via the bus before the predetermined reference time has elapsed, the signal received via the bus is
When the signal is the same as the directly received remote control signal, the signal received via the bus is substantially ignored, so that the malfunction of the electronic device can be prevented more easily and reliably.

[Brief description of drawings]

FIG. 1 is a diagram showing the maximum configuration of an AV system.

FIG. 2 is a diagram showing a reduced configuration of an AV system.

FIG. 3 is a diagram showing another reduced configuration of the AV system.

FIG. 4 is a diagram for explaining a housed state of AV equipment constituting an AV system.

5 is a block diagram showing an internal configuration of the AV center 1. FIG.

FIG. 6 is a flowchart illustrating processing of the electronic device control method of the present invention.

FIG. 7 is a flowchart illustrating more detailed processing of step S2 of FIG.

FIG. 8 is a flowchart illustrating another more detailed process of step S2 of FIG.

FIG. 9 is a diagram showing a format of transmission data on a D2B bus.

10 is a diagram illustrating a data field formed of the data bits of FIG. 9. FIG.

FIG. 11 is a diagram illustrating a data field formed when the data bits of FIG. 9 are reply data.

FIG. 12 is a flowchart illustrating another embodiment of the electronic device control method of the present invention.

FIG. 13 is a diagram showing a configuration example of a conventional AV system.

[Explanation of symbols]

 1 AV Center 2 1st VTR 3 2nd VTR 4 3rd VTR 5 4th VTR 6 Video Tuner 7 Multi Disc Player 11 D2B Bus 21 AV Rack 21a to 22g Remote Control Device 31 TV Microcomputer 41 Program ROM 42 Program Control RAM 43 CPU 44 Input control unit 45 Remote control processing unit 51 Initialization button 52 Remote control light receiving unit 53 Remote control light emitting unit 54 D2B microcomputer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Yamazaki 6-735 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation

Claims (2)

[Claims] 1. An electronic device control method for controlling a plurality of electronic devices which are connected via a common bus so as to constitute a system and which can be independently controlled by remote control signals from respective remote control devices, Among the electronic devices, the remote control signal is generated from the electronic device serving as a center in the system, and the electronic devices other than the center among the electronic devices receive the remote control signal generated from the electronic device serving as a center. Whether or not the electronic device as a center receives the remote control signal from the remote control device, the electronic device as a center does not receive the remote control signal generated by the electronic device as a center. A signal corresponding to the received remote control signal is output to the electronic device via the bus and used as the center. An electronic device control method, wherein a signal corresponding to the received remote control signal is not output to the electronic device that has received the remote control signal generated from the electronic device. 2. An electronic device control method for controlling a plurality of electronic devices which are connected via a common bus so as to constitute a system and which can be independently controlled by remote control signals from respective remote control devices, The electronic device, after directly receiving the remote control signal,
When a signal is received via the bus after a preset predetermined reference time or more has elapsed, a process corresponding to the signal received via the bus is executed and before the reference time elapses. When a signal is received via the bus, when the signal received via the bus is the same signal as the remote control signal received directly, the signal received via the bus is substantially ignored. An electronic device control method, wherein when a signal received via the bus is a signal different from the remote control signal received directly, a process corresponding to the signal received via the bus is executed.