JP5644586B2 - Remote control and remote control system - Google Patents

Description

  The present invention relates to a remote control and a remote control system, and more particularly to a configuration of a remote control outside a bathroom installed in a place other than a bathroom in a remote control system used for a hot water supply device with a bath function.

  Conventionally, a hot water supply device equipped with a so-called bath function such as bathing in a bathtub or retreating a bath has a remote control (remote control device) as a remote control installed in the bathroom and a place other than the bathroom such as a kitchen. A remote control outside the bathroom is installed.

  The bathroom remote controller and the remote controller outside the bathroom are respectively connected to a controller (control unit) of the hot water supply device via a communication cable, and a control signal generated by each remote controller in response to the operation of the remote controller is supplied via the communication cable. By being given to the controller of the apparatus, the hot water supply apparatus can be remotely operated.

  In this connection, the bathroom remote controller and the bathroom remote controller can communicate with each other via the hot water supply device, and the contents operated by the bathroom remote controller are reflected in the bathroom remote controller (for example, the bathroom remote controller). The hot water set temperature set in is set and displayed as the hot water set temperature also in the remote control outside the bathroom. On the other hand, the contents operated by the remote control outside the bathroom are also reflected in the remote control (for example, set by the remote control outside the bathroom). The hot water supply set temperature is set and displayed as the hot water supply set temperature on the bathroom remote control).

  In recent years, it has become possible to make a voice call between the bathroom remote controller and the remote controller outside the bathroom using the communication function of the bathroom remote controller and the remote controller outside the bathroom (the intercom function has been added to the bathroom remote controller and the remote controller outside the bathroom). Recently, an audio device such as a digital audio player is connected to a remote controller outside the bathroom using such an intercom function (signal transmission / reception function for voice calls). Analog audio signals such as music output from the remote controller outside the bathroom are processed into signals that can be transmitted to the bathroom remote controller in the same procedure as the intercom function voice call (specifically, analog audio signals are converted into A / D signals) The converter converts it into digital data, and the modulation circuit modulates the carrier wave with the digital data). Has also been proposed to transmit and configured to output such audibly to the music received in the bathroom remote controller (for example, see Patent Document 1).

JP 2002-277050 A

  By the way, the configuration in which the audio equipment is connected to the remote controller outside the bathroom so that the music can be listened to by the bathroom remote controller can easily enjoy the music recorded in the digital audio player having no waterproof function in the bathroom. In this case, the analog audio signal output from the audio equipment to the remote control outside the bathroom is the analog audio signal input to the remote control outside the bathroom because the headphone output on the audio equipment side is used as the analog audio signal output from the audio equipment. The input level setting was left to the adjustment on the audio equipment side (specifically, the volume adjustment of the headphone output).

  On the other hand, since there is no means for displaying the input level of the analog audio signal input from the audio equipment on the remote controller outside the bathroom, the user must adjust the headphone output volume based on the rule of thumb. In other words, the input level of the analog audio signal input to the remote controller outside the bathroom may be too high or too low.

  Therefore, for example, when the volume setting on the acoustic device side is excessive, there occurs a situation in which the amplitude of the analog audio signal exceeds the input range of the A / D conversion unit and is not accurately converted into digital data. As a result, the sound output from the bathroom remote control may be broken (distorted). And since the occurrence of such sound cracking can not be confirmed unless the user goes to the bathroom, in order to set the input level of the analog audio signal to an appropriate value, the installation location of the bathroom and the remote control outside the bathroom (For example, the kitchen) had to be reciprocated, and the work was complicated. Such sound cracking is caused by the process of converting an analog audio signal into digital data, and cannot be eliminated by adjusting the volume output from the speaker on the bathroom remote control side.

  The present invention has been made in view of such problems, and the object of the present invention is to provide a signal capable of receiving an analog audio signal input from an audio device connected to the remote control outside the bathroom with the bathroom remote control. In a remote control system for processing and transmitting a sound, a remote control capable of setting an input level of an analog audio signal input from an audio device to an appropriate value without depending on a user's rule of thumb and a remote control system using the remote control are provided. There is.

  In order to achieve the above object, a remote controller according to claim 1 of the present invention is a connection terminal for connecting an audio device, and an analog audio signal input from the audio device via the connection terminal is converted to digital data A. In a remote control provided with a / D conversion unit, on the condition that the detection means for detecting the frequency exceeding the input range of the A / D conversion unit, and the excess frequency detected by the detection unit exceeds a predetermined value And an informing means for performing an informing operation for urging the adjustment of the output level of the analog audio signal of the acoustic device.

  That is, according to the first aspect of the present invention, the analog audio signal input exceeds the input range of the A / D converter for the A / D converter that converts the analog audio signal input from the audio device into digital data. Frequency (the number of times the input range has been exceeded within a predetermined time) is detected, and if this frequency exceeds a predetermined value set in advance, the notification means adjusts the output level of the analog audio signal of the audio equipment (specifically In this case, a notification operation for prompting adjustment to lower the output level of the analog audio signal is performed. Therefore, the user can confirm whether or not the analog audio signal output from the audio device is excessive simply by playing music or the like with the audio device connected to the remote control. Therefore, when the output of the analog audio signal is excessive, the user can easily recognize that through the notification operation, saving the trouble of moving to the bathroom and checking the analog audio signal of the audio equipment according to the notification operation. By manually lowering the output level, the input level of the analog audio signal to the remote control can be made appropriate.

  The remote controller according to claim 2 of the present invention is the remote controller according to claim 1, further comprising an adjusting means for adjusting an input level of the analog audio signal to the A / D converter, and a notification operation by the notification means. Or the notification level of the analog audio signal is automatically adjusted by the adjustment unit before or after the notification unit.

  That is, the remote control according to claim 2 is provided with adjusting means for adjusting the input level of the analog audio signal from the audio device, and the analog audio signal from the audio device exceeds the input range of the A / D converter. If the frequency of the transmission exceeds the predetermined value, the input level of the analog audio signal to the A / D converter is within the input range of the A / D converter before the notification means performs the notification operation or together with the notification operation. Is automatically adjusted by the adjusting means so as to be within the range. Therefore, in the remote control according to the second aspect, even if the analog audio signal output from the audio device is excessive, the analog input to the A / D conversion unit is not required without requiring a user operation on the audio device. The input level of the audio signal is automatically adjusted to an appropriate value. In the present invention, since the notification operation by the notification means is performed in conjunction with the automatic adjustment by the adjustment means, the user can be aware that the output level of the analog audio signal of the acoustic device is excessive, and the next connection It can be a reference when doing. In addition, since it is expected that the analog audio signal input to the A / D conversion unit is too large to be adjusted by the adjusting unit, in such a case, the notification operation of the notification unit causes the user's notification operation. It is effective to encourage voluntary adjustment.

  According to a third aspect of the present invention, there is provided a remote controller comprising: a connection terminal for connecting an audio device; and an A / D conversion unit for converting an analog audio signal input from the audio device via the connection terminal into digital data. A detecting means for detecting the frequency of exceeding the input range of the A / D converter, and an adjusting means for adjusting the input level of the analog audio signal to the A / D converter, the detecting means The input level of the analog audio signal is automatically adjusted by the adjusting means on the condition that the frequency of excess exceeds a predetermined value.

  That is, the remote control according to claim 3 is the remote control according to claim 2 in which the notification means is omitted. Therefore, in the remote control according to the third aspect, when the analog audio signal output from the acoustic device is excessive, as in the remote control according to the second aspect, the user does not need to perform an operation on the acoustic device. The input level of the analog audio signal input to the / D converter is automatically adjusted to an appropriate value.

  And the remote control system according to claim 4 of the present invention is a remote control system in which a bathroom remote controller installed in a bathroom and a remote controller outside the bathroom installed in a place other than the bathroom are connected for communication via a hot water supply device. The remote controller outside the bathroom is configured by the remote controller according to any one of claims 1 to 3, and transmitting means for transmitting audio data based on the digital data converted by the A / D converter to the bathroom remote controller It is characterized by having.

  That is, according to this remote control system, by connecting the audio equipment to the remote control outside the bathroom of the hot water supply device, the music reproduced by the audio equipment can be listened to by the bathroom remote control. At that time, the output level of the analog sound output from the audio device (that is, the input level of the analog sound to the remote control outside the bathroom) can be adjusted to an appropriate value that does not cause sound cracking on the bathroom remote control side. it can.

  According to the first aspect of the present invention, when the output level of the analog sound output from the audio equipment connected to the remote controller is excessive with respect to the input range of the A / D conversion unit provided in the remote controller. Since the notification operation is performed by the notification means, it is easy to find out that the output level of the analog audio signal of the audio equipment connected to the remote controller is excessive. Therefore, it is possible to easily avoid an analog audio signal having an excessive level input to the remote controller.

  According to the second and third aspects of the present invention, when the output level of the analog audio signal of the audio equipment connected to the remote controller is excessive, the input level to the A / D converter is automatically set. Therefore, even when the user does not operate the audio device, it is possible to avoid an excessive level of analog audio signal being input to the A / D converter.

  According to the fourth aspect of the present invention, when an excessive analog audio signal is input from the audio device to the remote controller outside the bathroom, it is easily detected and avoided, so that it is output from the audio device. You can listen to music with the bathroom remote control without breaking the sound. In addition, since it is not necessary for the user to go to the bathroom to check whether or not sound cracking has occurred in adjusting the output of the analog audio signal of the audio equipment, a remote control system that is convenient for the user can be provided.

It is explanatory drawing which shows an example of schematic structure of the remote control system which concerns on this invention. It is a block diagram which shows schematic structure of one Embodiment of the remote control outside a bathroom in the same remote control system. It is a block diagram which shows schematic structure of other embodiment of the remote control outside a bathroom in the same remote control system.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1
The remote control system according to the present invention is configured to have a plurality of remote controls used for remote operation of a hot water supply device having a bath function. In this embodiment, the remote control system is installed in a bathroom as shown in FIG. The main part is composed of a bathroom remote controller 1, a remote controller 2 outside the bathroom installed in a place other than the bathroom (for example, a kitchen), and a hot water supply device 3 controlled by these remote controllers 1 and 2.

First, the hot water supply device 3 that is the control target of the remote controllers 1 and 2 will be described.
The hot water supply device 3 is constituted by a hot water supply device having a bath function as described above. Here, the bath function is a general term for a function of filling a bathtub (not shown) into a bathtub (pouring into a bathtub), a function of reheating hot water stretched on a bathtub (or adding hot water to a bathtub), etc. The hot-water supply device 3 shown in FIG. 1 is constituted by a hot-water supply device having at least one function among these hot water filling and chasing functions.

  The hot water supply device 3 includes a controller (a control unit for the hot water supply device) 4 for controlling the hot water supply function and the bath function in the hot water supply device 3, and the bathroom remote control 1 and the remote control outside the bathroom 2 are connected to the communication cable 5. The controller 4 is configured to control the operation of each part of the hot water supply device 3 based on the control signals supplied from the remote controllers 1 and 2. In addition, in a hot water supply apparatus having a bath function, a basic configuration for realizing a hot water supply function and a bath function (for example, a configuration of a heat exchanger for heating hot water and a combustion unit for heating the heat exchanger). Since these are well known, detailed description of these basic configurations is omitted here.

Next, the bathroom remote controller 1 and the bathroom remote controller 2 will be described.
Both the bathroom remote control 1 and the bathroom remote control 2 are operation devices provided for remotely operating the hot water supply device 3, and the bathroom remote control 1 and the bathroom remote control 2 are provided with the communication cable 5 as described above. Are connected to the controller 4 of the hot water supply device 3, and can communicate between the hot water supply device 3 and the remote controllers 1 and 2. That is, the bathroom remote controller 1 and the bathroom remote controller 2 are connected to each other via the hot water supply device 3. Communication connection between the bathroom remote controller 1 and the remote controller 2 outside the bathroom via the hot water supply device 3 is performed via the controller 4 of the hot water supply device 3 and a terminal block (not shown) for communication connection to the hot water supply device 3. 2) and a communication connection is made via this terminal block (that is, a communication connection is made without going through the controller 4), and the communication connection may be made by any method.

  For this reason, for example, when a remote operation of the hot water supply device 3 is performed by the remote controller 2 outside the bathroom, the control signal generated by the remote controller 2 outside the bathroom in response to the operation is transmitted to the controller of the hot water supply device 3 via the communication cable 5. 4 and the bathroom remote controller 1, and the contents of the control signal are reflected on both the controller 4 and the bathroom remote controller 1.

  Specifically, for example, when an operation for changing the hot water supply set temperature is performed with the remote controller 2 outside the bathroom, a control signal (a control signal instructing change of the hot water supply set temperature) generated in response to the operation is supplied to the hot water supply device 3. The data provided to the controller 4 and the bathroom remote controller 1 and held in the controller 4 and the bathroom remote controller 1 as the hot water supply set temperature are changed. Therefore, the controller 4 of the hot water supply device 3 performs hot water supply control using the changed data as the new hot water supply target temperature. In the bathroom remote controller 1, the changed data is displayed as a new hot water supply set temperature, and the subsequent change operation of the hot water set temperature (the operation of raising or lowering the hot water set temperature) Acceptance processing is started as a reference.

  In addition, when the remote control for the hot water supply device 3 is performed in the bathroom remote controller 1, the control generated by the bathroom remote control 1 by the operation is performed in the same manner as when the remote control for the hot water supply device 3 is performed by the remote controller 2 outside the bathroom. The signal is reflected on both the controller 4 and the remote control 2 outside the bathroom.

  In the bathroom remote controller 1 and the bathroom remote controller 2 shown in the present embodiment, the bathroom remote controller 1 and the bathroom remote controller 2 are connected to each other for communication between the bathroom remote controller 1 and the bathroom remote controller 2. Voice calls can be made.

  Specifically, in order to realize this voice call function (interphone function), the bathroom remote controller 1 and the bathroom remote controller 2 shown in the present embodiment are each used as a voice transmission circuit for inputting voice. A microphone, an A / D converter that converts an electrical signal (analog audio signal) obtained by the microphone into digital data, and modulation that modulates a carrier wave for transmission with the digital data obtained by the A / D converter And a demodulator circuit (transmission means) for demodulating a carrier wave received from another remote controller via the hot water supply device 3 as an audio receiving circuit, and the digital data obtained by the demodulator circuit as analog audio A D / A converter for converting the signal, an amplifier circuit for amplifying the analog audio signal obtained by the D / A converter, and an analog sound amplified by the amplifier circuit And a speaker for outputting a signal to the outside is provided.

  Therefore, for example, when an operation for starting a voice call is performed with the remote controller 2 outside the bathroom, and sound is input to the microphone of the remote controller 2 outside the bathroom in this state, the sound is converted into an analog audio signal by the microphone. The digital data is converted by the A / D converter, and then the audio data based on the digital data is transmitted to the bathroom remote controller 1 as a carrier wave modulated by the modulation circuit. That is, the digital data generated by the remote controller 2 outside the bathroom is transmitted to the bathroom remote controller 1 via the hot water supply device 3.

  On the other hand, on the bathroom remote controller 1 side, the carrier wave received via the communication cable 5 is demodulated by the demodulation circuit and the digital data is extracted, and the extracted digital data is converted into an analog audio signal by the D / A converter. It is converted, further amplified by an amplifier circuit, and output from a speaker as a sound that can be heard by a person. This voice call function is performed in the same procedure as described above even when a call is made from the bathroom remote controller 1 side. That is, the sound input to the microphone of the bathroom remote controller 1 is converted into an analog sound signal by the microphone provided in the bathroom remote controller 1 and converted into digital data by the A / D converter and then passed through the modulation circuit. Sent to remote control 2 outside the bathroom.

  In the remote control system shown in the present embodiment, such a voice call function between the bathroom remote controller 1 and the remote controller 2 outside the bathroom (specifically, a modulation circuit, a demodulation circuit, etc. provided in each of the remote controllers 1 and 2) is used. Then, an audio device such as a digital audio player is connected to the remote controller 2 outside the bathroom, and music (analog audio signal) output from the audio device is transmitted to the bathroom remote controller 1 using the communication function between the remote controllers 1 and 2. The bathroom remote controller 1 can be used for listening.

FIG. 2 shows a schematic configuration of the remote control 2 outside the bathroom related to such a function.
As shown in FIG. 2, the bathroom remote controller 2 of the present embodiment is configured by a control unit 10 having a microcomputer that controls each part of the remote controller 2 and various operation switches for inputting a remote operation to the hot water supply device 3. Operation unit 11, display unit 12 including a display device for displaying the state of hot water supply device 3, microphone 13 used for the voice call function described above, and analog audio signal input from microphone 13 A / D converter 14 for converting the data into digital data, a modulation / demodulation circuit 15 comprising the modulation circuit and the demodulation circuit, and a D / A conversion for converting the digital data demodulated by the modulation / demodulation circuit 15 into an analog audio signal Unit 16, an amplification circuit 17 for amplifying the analog audio signal output from the D / A conversion unit 16, and amplification by this amplification circuit 17 And a speaker 18 for outputting the analog audio signal to the outside, a connection terminal 7 for connecting the audio device 6 to the remote control 2 outside the bathroom, and an analog audio signal input from the connection terminal 7 as digital data. And an A / D converter 8 for changing.

  Here, as the analog audio signal output from the audio device 6, for example, an analog audio signal whose output level can be adjusted (volume adjustment) on the audio device 6 side, such as a headphone output provided in the audio device 6, is available. Used. Therefore, a terminal (for example, a stereo mini jack) that can be connected to the headphone output of the audio device 6 is employed as the connection terminal 7.

  When listening to music or the like output from the audio device 6 with the bathroom remote controller 1, the connection terminal 7 and the headphone output of the audio device 6 are connected by the cable 9, and the audio device 6 is reproduced in this state. As a result, an analog audio signal output from the headphone output of the acoustic device 6 is supplied to the A / D conversion unit 8 via the connection terminal 7 and converted into digital data by the A / D conversion unit 8. 15, the carrier wave is modulated by the audio data based on the digital data and transmitted to the bathroom remote controller 1. On the other hand, the bathroom remote controller 1 demodulates, D / A converts and amplifies the received carrier wave in the same procedure as the voice call and outputs it from the speaker so that the bathroom remote controller 1 can listen to music and the like. It has become.

  By the way, in the configuration in which music or the like output from the audio device 6 is transmitted to the bathroom remote controller 1 in this way, the output level (output volume) of the analog audio signal output from the audio device 6 is the A / D conversion unit 8. If the input range is exceeded (overrange), the digital data converted by the A / D converter 8 is distorted, resulting in sound breaks in the music output by the bathroom remote control 1, etc. Will occur.

  Therefore, in the remote controller 2 outside the bathroom shown in the present embodiment, the frequency of exceeding the input range of the A / D conversion unit 8 is detected as a configuration for avoiding the occurrence of such an overrange with respect to the A / D conversion unit 8. Detecting means 20 for performing the notification operation for urging the adjustment of the output level of the analog audio signal of the audio equipment 6 on the condition that the excess frequency detected by the detecting means 20 exceeds a predetermined value (this embodiment) In form, a display 12) is provided.

  Specifically, the detection means 20 is configured such that the input level (voltage amplitude) of the analog audio signal input from the acoustic device 6 to the A / D conversion unit 8 is the input range (normally) of the A / D conversion unit 8. In this embodiment, the above-described A / D conversion unit detects the frequency of exceeding (that is, the upper and lower limit values of the voltage amplitude that can be A / D converted). 8, 14 and the D / A converter 16 are integrated in a digital control device 19 which is integrated.

  That is, for example, when the A / D conversion unit 8 is configured by an 8-bit A / D converter, the detection means 20 has digital data (A / D conversion value) after A / D conversion of “FFh”. And the frequency of “00h” is detected. In this regard, for example, the frequency of exceeding the input range may be detected with a slight margin such as detecting the frequency of “FEh” or more and “01h” or less.

  For example, (1) an A / D conversion value is acquired for each sampling period of the A / D converter, and the number of times that the overrange has occurred within a predetermined time is measured. A method, (2) a method of periodically acquiring A / D conversion values at a predetermined interval equal to or less than a sampling period of the A / D converter, and measuring the number of times an overrange has occurred within a predetermined time, (3) even once When overrange occurs, it is determined that “overrange is present”, and this is periodically repeated to measure the number of times that “overrange is present” within a predetermined time. Then, the frequency at which the input level of the analog audio signal input to the A / D converter 8 exceeds the input range of the A / D converter 8 by any one of these methods is set.

  When the frequency of the overrange of the A / D conversion unit 8 detected by the detection means 20 exceeds a predetermined value (X times) set in advance in the control unit 10, the control unit 10 The output level of the analog audio signal output from the audio device 6 is determined to be excessive, and the output level of the analog audio signal of the acoustic device 6 (that is, the volume of the headphone output in this embodiment) is lowered on the display unit 12. Display to request. This display is continued until the frequency of the overrange detected by the detecting means 20 becomes equal to or lower than the predetermined value. When the frequency becomes equal to or lower than the predetermined value, the display is stopped.

  As described above, in the remote control system according to the present embodiment, when the control unit 10 of the remote control 2 outside the bathroom determines whether the output level of the analog audio signal output from the acoustic device 6 is excessive, it is excessive. Therefore, the user simply connects the audio device 6 to the remote control 2 outside the bathroom and performs the reproduction operation, and the analog audio signal output from the audio device 6 is excessive. It is possible to confirm whether or not there is an excess, and according to the display on the display unit 12, until this display disappears (the voltage amplitude of the analog audio signal output from the acoustic device 6 is changed by the A / D conversion unit 8. By stepping down the volume of the headphone output of the audio equipment 6 in a stepwise manner (until it falls within a level that allows normal A / D conversion), the A / D conversion unit 8 is turned on and off. Renji is eliminated.

  Therefore, according to the remote control system shown in the present embodiment, the output level of the analog audio signal output from the audio device 6 (the input of the A / D conversion unit 8) can be obtained even if the user does not check whether there is sound cracking in the bathroom. Level) can be made appropriate, and when moving to the bathroom, it becomes possible to enjoy clear music without sound cracks.

Embodiment 2
Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 3 shows a schematic configuration of another embodiment of the remote control 2 outside the bathroom. The remote controller 2 outside the bathroom shown in FIG. 3 shows a configuration provided with an input level adjuster 21 as an adjusting means for adjusting the input level of the analog audio signal to the A / D converter 8. Since other configurations are the same as those in the first embodiment, the same reference numerals are given to portions having the same configurations, and the description thereof is omitted.

  Specifically, the input level adjuster 21 is configured to change the input level of the analog audio signal input to the A / D converter 8 under the control of the controller 10. For example, an electronic volume such as a potentiometer is used as the input level adjuster.

  Then, the control unit 10 monitors the frequency with which the input level of the analog audio signal input from the connection terminal 7 exceeds the input range of the A / D conversion unit 8, as in the first embodiment. When this frequency (excess frequency) exceeds a predetermined value (X times) set in the control unit 10 in advance, the analog audio signal input to the A / D conversion unit 8 through the input level adjuster 21 is Control is performed to suppress the input level to a small level. Specifically, the control for suppressing the input level of the analog signal is continued until the overrange of the A / D conversion unit 8 is eliminated, and is monitored by the detection means 20 when the overrange is eliminated. It is configured to stop when the excess frequency becomes equal to or less than a predetermined value.

  As described above, in the remote control system shown in the present embodiment, the remote controller 2 outside the bathroom not only determines whether the output level of the analog audio signal output from the acoustic device 6 is excessive, but the controller 10 is excessive. In this case, since the input level of the analog audio signal is automatically adjusted so as to be an appropriate value, the user connects the audio device 6 to the remote controller 2 outside the bathroom and performs the reproduction operation. As a result, the input level of the analog audio signal input to the A / D conversion unit 8 becomes an appropriate value without particularly operating the acoustic device 6.

  Therefore, according to the remote control system shown in the present embodiment, the output level of the analog audio signal output from the audio device 6 (the input of the A / D conversion unit 8) can be obtained even if the user does not check whether there is sound cracking in the bathroom. Level) can be made appropriate, and when moving to the bathroom, it becomes possible to enjoy clear music without sound cracks. In addition, since no special operation is required for the acoustic device 6, the user's effort is greatly reduced, while there is no need to wait for the display unit 12 to disappear as shown in the first embodiment. After the device 6 is connected to the remote control 2 outside the bathroom, it can be quickly moved to the bathroom.

  In the remote control system shown in the present embodiment, as described above, when the output level of the analog audio signal output from the acoustic device 6 is excessive, it is input to the A / D conversion unit 8 at the judgment of the control unit 10. Since the input level of the analog audio signal is suppressed to a low level, the display unit 12 as shown in the first embodiment (display for prompting the adjustment of the output level of the analog audio signal of the audio device) may not be performed. On the other hand, in order to increase the experience value of the user, the display unit 12 may be configured to perform display. When such display is performed, the display is performed before or after the control unit 10 performs control for reducing the input level of the analog audio signal input to the A / D conversion unit 8 or after the control. It can be configured to be performed with execution. In other words, the input level adjuster 21 may be configured to adjust the input level before or together with the display operation by the display unit 12.

  The above-described embodiments show preferred embodiments of the present invention, and the present invention is not limited to these, and various design changes can be made within the scope of the invention.

  For example, in the above-described embodiment, a case where a digital audio player is used as an acoustic device connected to the remote controller 2 outside the bathroom has been described, but an analog audio signal can be output as the acoustic device connected to the remote controller 2 outside the bathroom. If it is a device, it is also possible to connect an audio device other than a digital audio player.

  In the above-described embodiment, the case where the detection unit 20 is provided in the digital control device 19 has been described. However, the detection unit 20 may be provided in the control unit 10 independently of the control device 19, for example. Good.

  In the above-described embodiment, the case where the display unit 12 is used as a notification unit that notifies that the excess frequency detected by the detection unit 20 has exceeded a predetermined value is shown. As a notification operation by the notification unit, Instead of the display on the display unit 12 described above or in combination with the display on the display unit 12, an audio message that prompts the adjustment of the output level of the analog audio signal output from the acoustic device 6 is output from the speaker 18. It is also possible to configure it.

  Moreover, in Embodiment 2 mentioned above, although the control of the input level adjuster 21 showed the case where it comprised so that the control part 10 could judge uniquely based on the monitoring result of the detection means 20, for example, bathroom remote control 1 It is also possible to configure so that the input level can be adjusted by the input level adjuster 21 by receiving a remote operation from the remote control. That is, in the above-described embodiment, if the frequency of the overrange detected by the detection means 20 does not exceed a predetermined value, the input level adjuster 21 reduces the input level of the analog audio signal input to the A / D converter 8. Even if the frequency of the overrange is within a predetermined value, if the user determines that there is sound cracking in the bathroom, the input to the A / D converter 8 by operating the bathroom remote controller 1 It can also be configured to reduce the level.

  In the above-described embodiment, the case where the voice data transmitted / received between the remote controller 2 outside the bathroom and the bathroom remote controller 1 regarding the call function is digital data. However, the voice data may be analog data. .

DESCRIPTION OF SYMBOLS 1 Bathroom remote control 2 Remote control outside bathroom 3 Hot-water supply apparatus 4 Controller 5 Communication cable 6 Audio equipment 7 Connection terminal 8 A / D conversion part 10 Control part 11 Operation part 12 Display part (notification means)
15 Modulator / Demodulator 16 D / A Converter 18 Speaker 20 Detecting Unit 21 Input Level Adjuster (Adjusting Unit)

Claims (4)

In a remote control comprising a connection terminal for connecting an audio device, and an A / D converter that converts an analog audio signal input from the audio device through the connection terminal into digital data,
Detecting means for detecting a frequency exceeding an input range of the A / D converter;
A remote controller comprising: a notification unit that performs a notification operation for urging adjustment of an output level of an analog audio signal of the acoustic device on condition that an excess frequency detected by the detection unit exceeds a predetermined value; . Adjusting means for adjusting the input level of the analog audio signal to the A / D converter;
The remote controller according to claim 1, wherein the input level of the analog audio signal is automatically adjusted by the adjustment unit before performing the notification operation by the notification unit or together with the notification operation by the notification unit. In a remote control including a connection terminal for connecting an audio device, and an A / D conversion unit that converts an analog audio signal input from the audio device through the connection terminal into digital data,
Detecting means for detecting a frequency exceeding an input range of the A / D converter;
Adjusting means for adjusting the input level of the analog audio signal to the A / D converter;
A remote controller characterized by automatically adjusting the input level of the analog audio signal by the adjusting means on condition that the excess frequency by the detecting means exceeds a predetermined value. In a remote control system in which a bathroom remote control installed in a bathroom and a remote control outside the bathroom installed in a place other than the bathroom are connected via a hot water supply device,
The remote controller outside the bathroom is configured by the remote controller according to any one of claims 1 to 3, and transmitting means for transmitting audio data based on the digital data converted by the A / D converter to the bathroom remote controller A remote control system characterized by comprising:

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