JP2012142976A - Sound volume control system, amplifier, and controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control sound volume values of a plurality of controllers and AV amplifiers to the same values.SOLUTION: An amplifier is connected to each of a plurality of controllers. When an instruction of changing a sound volume value which a display section displays on a display unit is input by user's operation in any one of the controllers, a changed sound volume value is transmitted to the amplifier and other controllers. In the amplifier, a sound volume control section controls the sound volume value of the amplifier based on the received sound volume value. In any of the other controllers than the controller which has transmitted the sound volume value, a change section changes the sound volume value displayed on the display unit to the sound volume value received from the controller.

Description

  The present invention relates to a volume adjustment system including an amplification device and a controller.

  The AV amplifier is connected to a PC via a network such as a LAN, and content reproduction is controlled by a controller program (hereinafter referred to as a controller) installed in the PC. A server program (hereinafter referred to as a server) is also installed in the PC, and a plurality of audio files are recorded on the HDD of the PC. When an audio file recorded on the HDD is selected by a user operation, the controller transmits an instruction to reproduce the selected audio file to the AV amplifier. The AV amplifier requests the server to transmit the selected audio file. The server reads the selected audio file from the HDD and transmits it to the AV amplifier. The AV amplifier decodes and amplifies the audio file transmitted from the server, and outputs sound from the speaker. (For example, Patent Document 1)

  When an instruction to change the controller-side volume value is input by a user's mouse operation or the like, the controller transmits the changed controller-side volume value to the AV amplifier. In accordance with this, the AV amplifier adjusts the volume value when the AV amplifier amplifies the audio signal. Here, a slide bar for changing the controller-side volume value by a user operation is provided on the operation screen of the controller, and the controller-side volume value is changed by moving the slide bar. As a result, AV The volume value of the amplifier is controlled. Therefore, it is required that the volume of the AV amplifier is changed appropriately (that is, easy for the user to understand) in accordance with the change of the volume value on the controller side.

  Further, when the user increases the controller-side volume value to the maximum value (or the vicinity thereof) at a time, the volume value of the AV amplifier increases at a time to the maximum value (or the vicinity thereof), and the amplifier circuit of the AV amplifier Or the speaker is damaged.

  According to the volume adjusting device proposed by the present applicant in Japanese Patent Application No. 2009-281044, as described above, the volume of the AV amplifier can be adjusted according to the controller-side volume value transmitted from the controller. However, since the controller cannot recognize the volume value of the AV amplifier, when the user adjusts the volume value of the AV amplifier by operating the volume knob or remote control of the AV amplifier, the controller set in the controller is set. The side volume value is different from the actual volume value of the AV amplifier. As a result, the volume of the AV amplifier cannot be appropriately changed according to the change of the controller-side volume value.

JP 2005-31494 A

  The present invention has been made in order to solve the above-described conventional problems. The purpose of the present invention is to change the volume value of the amplification device according to the amount of change in the controller-side volume value when the controller-side volume value is changed. It is to provide a volume adjustment system that can be appropriately changed.

  A volume control system according to a preferred embodiment of the present invention includes an amplifying device and a controller connectable to the amplifying device, wherein the amplifying device receives a controller-side volume value from the controller; A first conversion unit that converts the controller-side volume value received by the first reception unit into an amplifier-side volume value, and a first input unit that receives an instruction to change the amplifier-side volume value according to a user operation And a second conversion unit that converts the changed amplifier-side volume value into the controller-side volume value when an instruction to change the amplifier-side volume value is input in response to a user operation, and the second conversion unit A first transmitter that transmits the controller-side volume value converted by the controller to the controller, and the first receiver receives the controller-side volume value, or A volume adjusting unit that adjusts a volume value of the amplification device based on the amplifier-side volume value when the changed amplifier-side volume value is input to the first input unit; and A display unit that displays a controller-side volume value on a display device; a second receiving unit that receives the controller-side volume value from the amplification device; and the controller-side volume value that the display unit displays on the display device, A changing unit for changing to the controller-side volume value received by the second receiving unit, and a second input for inputting an instruction to change the controller-side volume value displayed on the display device by the display unit by a user operation And an instruction to change the controller-side volume value that the display unit displays on the display device by a user operation, the changed controller And a second transmission unit for transmitting the roller side volume value to said amplifier.

  In the amplifying device, when the changed amplifier-side volume value is input to the first input unit, the amplifying device adjusts the volume value of the amplifying device based on the input amplifier-side volume value, and the second conversion unit controls the amplifier-side volume value. Is converted to a controller-side volume value, and the first transmitter transmits the controller-side volume value to the controller. In the controller, when the second receiving unit receives the controller-side volume value, the changing unit changes the controller-side volume value that the display unit displays on the display device to the received controller-side volume value. On the other hand, when the controller-side volume value is input to the second input unit, the changing unit changes the controller-side volume value that the display unit displays on the display device to the controller-side volume value input to the second input unit, The second transmission unit transmits the controller-side volume value input to the second input unit to the amplification device. In the amplifying device, when the first receiving unit receives the controller-side volume value from the controller, the first conversion unit converts the controller-side volume value into an amplifier-side volume value, and the volume value of the amplifying device is based on the amplifier-side volume value. Adjust. In this way, by notifying the controller-side volume value between the amplification device and the controller, the controller-side volume value managed by both can always be made the same. Therefore, when the controller-side volume value is changed, the amplifier-side volume value can be changed to an appropriate value.

  In a preferred embodiment, the first conversion unit has a controller-side maximum volume value, a controller-side minimum volume value, an amplifier-side maximum volume value that is a maximum value of the amplifier-side volume value that can be adjusted by the first input unit, and The controller-side volume value is converted into an amplifier-side volume value based on the amplifier-side minimum volume value that is the minimum value of the amplifier-side volume value that can be adjusted by the first input unit, and the second converter unit Based on the controller-side maximum volume value, the controller-side minimum volume value, the amplifier-side maximum volume value, and the amplifier-side minimum volume value, the amplifier-side volume value is converted into the controller-side volume value.

  In a preferred embodiment, the first conversion unit is a controller-side maximum volume value, a controller-side minimum volume value, a maximum value of an amplifier-side volume value that can be adjusted by the controller, and is adjusted by the first input unit. The amplifier-side maximum volume value that is smaller than the amplifier-side maximum volume value that is the maximum value of the amplifier-side volume value, and the amplifier-side volume value that can be adjusted by the controller, and the first input. The controller-side volume value is calculated based on the amplifier-side set minimum volume value (or the amplifier-side minimum volume value) that is larger than the amplifier-side minimum volume value that is the minimum value of the amplifier-side volume value that can be adjusted by the unit. The second conversion unit converts the controller-side maximum volume value, the controller-side minimum volume value, and the amplifier-side set maximum volume value. Volume value, and the amplifier-side setting minimum volume value (or the amplifier side minimum volume value) based on, for converting the amplifier side volume value to the controller-side volume value.

  In this case, even if the controller-side volume value is changed to the controller-side maximum volume value, the amplifier-side volume value does not exceed the amplifier-side set maximum volume value, so that damage to the amplifier or the speaker can be prevented.

  In a preferred embodiment, the controller further includes a storage unit that causes the storage unit to store the controller-side volume value that the display unit displays on the display device when the controller and the amplification device are disconnected. And the amplifying device are connected, the changing unit changes the controller-side volume value stored in the storage unit, the controller-side volume value that the display unit displays on the display device, The second transmission unit transmits the controller-side volume value stored in the storage unit to the amplification device.

  A volume control system according to still another preferred embodiment of the present invention includes an amplifying apparatus and a controller connectable to the amplifying apparatus, and the amplifying apparatus receives an amplifier-side volume value from the controller. A first input unit that receives an instruction to change the amplifier-side volume value in response to a user operation; and an instruction to change the amplifier-side volume value in response to a user operation. A first transmitter that transmits an amplifier-side volume value to the controller and the first receiver receives the amplifier-side volume value, or the changed amplifier-side volume value is input to the first input unit. A volume adjustment unit that adjusts the volume value of the amplification device based on the amplifier-side volume value, and the controller displays the controller-side volume value on a display device. A second receiving unit that receives the amplifier-side volume value from the amplification device; a first conversion unit that converts the amplifier-side volume value received by the second receiving unit into the controller-side volume value; A display unit displays on the display device by a change unit that changes the controller-side volume value displayed on the display device by the display unit to the controller-side volume value converted by the first conversion unit, and a user operation. A second input unit that receives an instruction to change the controller-side volume value to be input, and an instruction to change the controller-side volume value that the display unit displays on the display device by a user operation. A second converter that converts the controller-side volume value later to the amplifier-side volume value; and the amplifier-side volume value converted by the second converter. And a second transmission unit for transmitting to the serial amplifier.

  On the amplifying device side, when the amplifier-side volume value is input to the first input unit, the volume value of the amplifying device is adjusted based on the input amplifier-side volume value, and the first transmitting unit controls the amplifier-side volume value. Send to. On the controller side, when the second receiving unit receives the amplifier-side volume value, the first conversion unit converts the amplifier-side volume value into the controller-side volume value, and the changing unit causes the display unit to display on the display device. The value is changed to the controller-side volume value converted by the first conversion unit. On the other hand, when the controller-side volume value is input to the second input unit, the changing unit changes the controller-side volume value that the display unit displays on the display device to the controller-side volume value input to the second input unit, The second conversion unit converts the controller-side volume value into the amplifier-side volume value, and the second transmission unit transmits the amplifier-side volume value converted by the second conversion unit to the amplification device. On the amplifying device side, when the first receiving unit receives the amplifier-side volume value from the controller, it adjusts the volume value of the amplifying device based on the received amplifier-side volume value. In this way, by notifying the amplifier-side volume value between the amplification device and the controller, the amplifier-side volume value managed by both can always be the same. Therefore, when the controller-side volume value is changed, the amplifier-side volume value can be changed to an appropriate value.

  In a preferred embodiment, the first conversion unit has a controller-side maximum volume value, a controller-side minimum volume value, an amplifier-side maximum volume value that is a maximum value of the amplifier-side volume value that can be adjusted by the first input unit, and The amplifier-side volume value is converted into the controller-side volume value based on the amplifier-side minimum volume value that is the minimum value of the amplifier-side volume value that can be adjusted by the first input unit, and the second conversion unit includes: Based on the controller-side maximum volume value, the controller-side minimum volume value, the amplifier-side maximum volume value, and the amplifier-side minimum volume value, the controller-side volume value is converted into the amplifier-side volume value.

  In a preferred embodiment, the first conversion unit is a controller-side maximum volume value, a controller-side minimum volume value, a maximum value of an amplifier-side volume value that can be adjusted by the controller, and is adjusted by the first input unit. The amplifier-side maximum volume value that is smaller than the amplifier-side maximum volume value that is the maximum value of the amplifier-side volume value, and the amplifier-side volume value that can be adjusted by the controller, and the first input. Based on the amplifier-side set minimum volume value (or the amplifier-side minimum volume value) that is larger than the amplifier-side minimum volume value that is the minimum value of the amplifier-side volume value that can be adjusted by the unit, the amplifier-side volume value is set to the controller The second conversion unit converts the controller-side maximum volume value, the controller-side minimum volume value, and the amplifier-side set maximum volume value. Volume value, and the amplifier-side setting minimum volume value (or the amplifier side minimum volume value) based on, for converting said controller side volume value to the amplifier side volume value.

  In this case, even if the controller-side volume value is changed to the controller-side maximum volume value, the amplifier-side volume value does not exceed the amplifier-side set maximum volume value, so that damage to the amplifier or the speaker can be prevented.

  In a preferred embodiment, the controller further includes a storage unit that causes the storage unit to store the controller-side volume value that the display unit displays on the display device when the controller and the amplification device are disconnected. And the amplifying device are connected, the changing unit changes the controller-side volume value stored in the storage unit, the controller-side volume value that the display unit displays on the display device, The second conversion unit converts the controller-side volume value stored in the storage unit into the amplifier-side volume value, and the second transmission unit transmits the amplifier-side volume value to the amplification device.

  A volume control system according to still another preferred embodiment of the present invention includes an amplifying apparatus and a controller connectable to the amplifying apparatus, and the amplifying apparatus receives an amplifier-side volume value from the controller. A first input unit that receives an instruction to change the amplifier-side volume value in response to a user operation; and an instruction to change the amplifier-side volume value in response to a user operation. A first transmitter that transmits an amplifier-side volume value to the controller and the first receiver receives the amplifier-side volume value, or the changed amplifier-side volume value is input to the first input unit. A volume adjusting unit that adjusts the volume value of the amplification device based on the amplifier side volume value; and an amplifier side maximum sound that is a maximum value of the amplifier side volume value that can be adjusted by the first input unit. And a second transmitter that transmits to the controller an amplifier-side minimum volume value that is a minimum value of the amplifier-side volume value that can be adjusted by the first input unit, and the controller has a controller-side volume value. A storage unit that stores the amplifier-side volume value, the amplifier-side maximum volume value, and the amplifier-side minimum volume value from the amplifier, and a controller-side maximum volume value. A display unit that displays the amplifier-side volume value on a display device instead of the controller-side volume value by changing to the amplifier-side maximum volume value and changing the controller-side minimum volume value to the amplifier-side minimum volume value; A changing unit that changes the amplifier-side volume value that the display unit displays on the display device to the amplifier-side volume value received by the second receiving unit; A second input unit that receives an instruction to change the amplifier-side volume value that the display unit displays on the display device by a user operation; and the amplifier side that the display unit displays on the display device by a user operation. And a second transmission unit that transmits the changed amplifier-side volume value to the amplification device when an instruction to change the volume value is input.

  In this case, since the controller-side volume value can be input to the controller instead of the controller-side volume value by the user operation, the controller and the amplifying device do not need to convert the amplifier-side volume value and the controller-side volume value. , The process is simplified. Further, since the controller displays the amplifier-side volume value, it is easy to understand how much the amplifier-side volume value should be changed by the user operating the second input unit.

  In a preferred embodiment, the display device further includes a second storage unit that stores the amplifier-side volume value that the display unit displays on the display device when the controller and the amplification device are disconnected, When the controller and the amplifying device are connected, the changing unit displays the amplifier-side volume value stored in the second storage unit, and the display unit displays the amplifier-side volume value on the display device. And the second transmission unit transmits the amplifier-side volume value stored in the second storage unit to the amplification device.

  A volume control system according to still another preferred embodiment of the present invention includes an amplifying apparatus and a controller connectable to the amplifying apparatus, and the amplifying apparatus receives an amplifier-side volume value from the controller. A first input unit that receives an instruction to change the amplifier-side volume value in response to a user operation; and an instruction to change the amplifier-side volume value in response to a user operation. A first transmitter that transmits an amplifier-side volume value to the controller and the first receiver receives the amplifier-side volume value, or the changed amplifier-side volume value is input to the first input unit. A volume adjusting unit that adjusts the volume value of the amplification device based on the amplifier-side volume value; a maximum value of the amplifier-side volume value that can be adjusted by the controller; and An amplifier-side maximum volume value that is smaller than an amplifier-side maximum volume value that is the maximum value of the amplifier-side volume value that can be adjusted by one input unit, and a minimum value of the amplifier-side volume value that can be adjusted by the controller; The amplifier-side set minimum volume value (or the amplifier-side minimum volume value) larger than the amplifier-side minimum volume value that is the minimum value of the amplifier-side volume value that can be adjusted by the first input unit is transmitted to the controller. A storage unit that stores the controller-side volume value in a storage device, the amplifier-side volume value, the amplifier-side set maximum volume value, and the amplifier-side set minimum volume value ( Or a second receiver that receives the amplifier-side minimum volume value) from the amplifier, and the controller-side maximum volume value is changed to the amplifier-side set maximum volume value. A display unit that displays the amplifier-side volume value on the display device instead of the controller-side volume value by changing the controller-side minimum volume value to the amplifier-side set minimum volume value (or the amplifier-side minimum volume value) And a change unit that changes the amplifier-side volume value that the display unit displays on the display device to the amplifier-side volume value received by the second receiving unit, and the display unit displays the display by a user operation. A second input unit that receives an instruction to change the amplifier-side volume value to be displayed on the device, and an instruction to change the amplifier-side volume value that the display unit displays on the display device are input by a user operation A second transmission unit that transmits the changed amplifier-side volume value to the amplification device.

  In this case, since the controller-side volume value can be input to the controller instead of the controller-side volume value by the user operation, the controller and the amplifying device do not need to convert the amplifier-side volume value and the controller-side volume value. , The process is simplified. Further, since the controller displays the amplifier-side volume value, it is easy to understand how much the amplifier-side volume value should be changed by the user operating the second input unit. In addition, since the controller does not change the maximum volume value set on the amplifier side, it is possible to prevent damage to the amplifier and the speaker.

  In a preferred embodiment, the display device further includes a second storage unit that stores the amplifier-side volume value that the display unit displays on the display device when the controller and the amplification device are disconnected, When the controller and the amplifying device are connected, the changing unit displays the amplifier-side volume value stored in the second storage unit, and the display unit displays the amplifier-side volume value on the display device. And the second transmission unit transmits the amplifier-side volume value stored in the second storage unit to the amplification device.

  A volume control system according to another preferred embodiment of the present invention includes an amplifying apparatus and a controller connectable to the amplifying apparatus, wherein the amplifying apparatus receives a volume value from the controller, and a user. A first input unit that receives an instruction to change the volume value according to an operation; a first transmission unit that transmits the volume value input to the first input unit to the controller; and the first reception unit. A volume adjustment unit that adjusts the volume value of the amplification device based on the volume value when the volume value is received or when the changed volume value is input to the first input unit. The controller displays the volume value on a display device; a second reception unit that receives the volume value from the amplification device; and the volume value that the display unit displays on the display device. The second receiving A change unit that changes the volume value received by the unit, a second input unit that receives an instruction to change the volume value that the display unit displays on the display device by a user operation, and a user operation, A second transmission unit configured to transmit the changed volume value to the amplification device when an instruction to change the volume value displayed on the display device by the display unit is input;

  On the amplification device side, when the volume value is input to the first input unit, the volume value of the amplification device is adjusted based on the input volume value, and the first transmission unit transmits the volume value to the controller. On the controller side, when the second receiving unit receives the volume value, the changing unit changes the volume value displayed on the display device by the display unit to the received volume value. On the other hand, when the volume value is input to the second input unit, the change unit changes the volume value that the display unit displays on the display device to the volume value input to the second input unit, and the second transmission unit The volume value input to the second input unit is transmitted to the amplification device. On the amplification device side, when the first receiving unit receives the volume value from the controller, the volume value of the amplification device is adjusted based on the received volume value. In this way, by notifying the volume value between the amplifying apparatus and the controller, the volume value managed by both can always be the same. Therefore, when the volume value is changed, the amplifier-side volume value can be changed to an appropriate value.

  In a preferred embodiment, a plurality of the amplification devices can be connected to the controller, and the first transmission unit of the first amplification device among the plurality of amplification devices is input to the first input unit. The volume value is transmitted to the controller, and the changing unit changes the volume value that the display unit displays on the display device to the volume value received from the first amplification device, and the second transmission. A unit transmits the changed volume value to the amplification device other than the first amplification device, and the volume adjustment unit of the amplification device other than the first amplification device is based on the received volume value. The volume value of the amplification device is adjusted.

  In a preferred embodiment, a plurality of the amplification devices can be connected to the controller, and the first transmission unit of each amplification device transmits its volume value at the time of connection to the controller, and the controller Selecting one of the volume values of each of the amplification devices, and the changing unit changes the volume value that the display unit displays on the display device to the selected volume value, 2 The transmission unit transmits the changed volume value to each amplification device for which no volume value has been selected, and the volume adjustment unit of each amplification device for which no volume value has been selected has received the volume Adjust the volume value based on the value.

  In a preferred embodiment, a plurality of the controllers can be connected to the amplification device, and the volume value displayed on the display device by the display unit is changed by a user operation in one of the controllers. When an instruction is input, the changed volume value is transmitted to the amplification device, and in the amplification device, the volume adjustment unit adjusts the volume value of the amplification device based on the received volume value, The first transmission unit transmits the volume value to a controller other than the controller that has transmitted the volume value. In the controller other than the controller that has transmitted the volume value, the change unit, the display unit The volume value to be displayed on the display device is changed to the volume value received from the amplification device.

  In a preferred embodiment, a plurality of the controllers can be connected to the amplification device, and the volume value displayed on the display device by the display unit is changed by a user operation in one of the controllers. When an instruction is input, the changed volume value is transmitted to the amplifying apparatus and the other controller, and in the amplifying apparatus, the volume adjusting unit is based on the received volume value. In the controller other than the controller that has transmitted the volume value to the controller other than the controller that has transmitted the volume value and the first transmission unit has transmitted the volume value, the changing unit However, the volume value that the display unit displays on the display device is changed to the volume value received from the controller.

  In a preferred embodiment, when the amplification device and the controller are connected, the first transmission unit transmits the volume value of the amplification device to the controller.

  Therefore, when the amplifying device and the controller are connected, the volume values managed by both can always be the same. Therefore, when the volume value is changed, the amplifier-side volume value can be changed to an appropriate value.

  In a preferred embodiment, the controller further includes a storage unit that stores, in a storage device, the volume value displayed on the display unit when the controller and the amplification device are disconnected. When the amplification device is connected, the changing unit changes the volume value displayed on the display unit to the volume value stored by the storage unit, and the controller and the amplification device are connected. The second transmission unit transmits the volume value stored in the storage unit to the amplification device.

  When the controller and the amplification device are disconnected, the controller stores the volume value displayed on the display unit. Next, when the controller and the amplification device are connected, the changing unit changes the volume value displayed on the display unit to the stored volume value, and the second transmission unit stores the stored volume value. Is transmitted to the amplification device. On the amplification device side, when the first receiving unit receives the volume value from the controller, the volume adjustment value adjusts the volume based on the received volume value. Therefore, even when the volume value of the amplification device is changed when the controller and the amplification device are not connected, the volume value stored when the controller and the amplification device are disconnected can be restored. .

  In a preferred embodiment, a plurality of the amplifying devices can be connected to the controller, and the storage unit is disconnected when the controller and the amplifying device are disconnected for each of the amplifying devices. The display unit stores the volume value to be displayed on the display device, and the change unit stores the volume value in association with the connected amplification device when the controller and the amplification device are connected. The volume value that the display unit displays on the display device is changed to the volume value that is displayed, and the second transmission unit is connected to the amplification device when the controller and the amplification device are connected. The volume value stored in the storage unit in association with a device is transmitted to the amplification device.

  A volume control system according to a preferred embodiment of the present invention includes an amplifying device and a controller connectable to the amplifying device, wherein the amplifying device receives a controller-side volume value from the controller; A first conversion unit that converts the controller-side volume value received by the first reception unit into an amplifier-side volume value, and a first input unit that receives an instruction to change the amplifier-side volume value according to a user operation And a first transmission unit that transmits the amplifier-side volume value to the controller when an instruction to change the amplifier-side volume value is input in response to a user operation, and the first reception unit is the controller-side volume value. Or when the changed amplifier-side volume value is input to the first input unit, the volume value of the amplifying device is adjusted based on the amplifier-side volume value A volume control unit, wherein the controller displays the controller-side volume value on a display device, a second reception unit that receives the amplifier-side volume value from the amplification device, and the second reception. A second conversion unit that converts the amplifier-side volume value received by the unit into the controller-side volume value; and the controller-side volume value that the display unit displays on the display device is converted by the second conversion unit. A change unit that changes to the controller-side volume value, a second input unit that receives an instruction to change the controller-side volume value that the display unit displays on the display device by a user operation, and a user operation When the instruction to change the controller-side volume value to be displayed on the display device by the display unit is input, the controller-side volume value after the change is input. And a second transmission unit for transmitting to the serial amplifier.

  Preferably, the controller further includes a storage unit that causes the storage unit to store the controller-side volume value that is displayed on the display device when the controller and the amplification device are disconnected. When the device is connected, the change unit changes the controller-side volume value that the display unit displays on the display device to the controller-side volume value stored in the storage unit, and the second A transmission part transmits the said controller side volume value memorize | stored by the said memory | storage part to the said amplifier.

  A volume control system according to a preferred embodiment of the present invention includes an amplifying device and a controller connectable to the amplifying device, wherein the amplifying device receives an amplifier-side volume value from the controller, and a user When the first input unit that receives an instruction to change the amplifier-side volume value according to an operation and the instruction to change the amplifier-side volume value according to a user operation, the amplifier-side volume after the change A first converter that converts a value to the controller-side volume value; a first transmitter that transmits the controller-side volume value converted by the first converter to the controller; and the first receiver is the amplifier When the side volume value is received, or when the changed amplifier side volume value is input to the first input unit, the volume value of the amplifying device is set based on the amplifier side volume value. A display unit for displaying the controller-side volume value on a display device, a second receiving unit for receiving the controller-side volume value from the amplifier, and the display unit. Changing the controller-side volume value to be displayed on the display device to the controller-side volume value received by the second receiving unit, and the display unit to display on the display device by a user operation When an instruction to change the controller-side volume value to be displayed on the display device by the user operation is input by a second input unit to which an instruction to change the controller-side volume value is input and a user operation, A second converter for converting the controller-side volume value into the amplifier-side volume value; and the amplifier-side volume converted by the second converter. The a second transmission unit that transmits to the amplifying device.

  Preferably, the controller further includes a storage unit that causes the storage unit to store the controller-side volume value that is displayed on the display device when the controller and the amplification device are disconnected. When the device is connected, the change unit changes the controller-side volume value that the display unit displays on the display device to the controller-side volume value stored in the storage unit, and the second The conversion unit converts the controller-side volume value stored in the storage unit into the amplifier-side volume value, and the second transmission unit converts the amplifier-side volume value converted by the second conversion unit into the amplifier-side volume value. Transmit to the amplifier.

  When the controller-side volume value is changed, it is possible to provide a volume adjustment system that can appropriately change the volume value of the amplification device according to the amount of change in the controller-side volume value.

1 is a block diagram showing a PC and an AV amplifier according to a preferred embodiment of the present invention. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of the control part of AV amplifier. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of the control part of AV amplifier. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of a controller. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of the control part of AV amplifier. It is a flowchart which shows the process of the control part of AV amplifier. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of a controller. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of the control part of AV amplifier. It is a flowchart which shows the process of a controller. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of a controller. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of a controller. It is a figure which shows the operation screen of a controller. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of a controller. It is a figure which shows operation | movement in case a some AV amplifier is connected to a controller. It is a figure which shows operation | movement in case a some AV amplifier is connected to a controller. It is a figure which shows operation | movement in case a some AV amplifier is connected to a controller. It is a figure which shows operation | movement in case a some AV amplifier is connected to a controller. It is a flowchart which shows the process of AV amplifier. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of AV amplifier. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of a controller. It is a flowchart which shows the process of AV amplifier. It is a figure which shows operation | movement in case a some controller is connected to AV amplifier. It is a figure which shows operation | movement in case a some controller is connected to AV amplifier.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. However, the present invention is not limited to these embodiments.
[Example 1]
As shown in FIG. 1, the volume control system of the present invention includes a PC 1 and an amplification device 11 such as an AV amplifier (also referred to as an AV receiver), which can be connected to each other via a network such as a LAN. . Or these may be connected via other electric communication lines, such as HDMI, IEEE1394, USB, and the internet.

  The PC 1 includes a CPU 2, an HDD 3, a memory (ROM, RAM, etc.) 4, an operation unit 5, a display unit 6, and a communication unit 7. The CPU 2 controls each unit of the PC 1 based on the OS and other programs recorded in the HDD 3. In the HDD 3, a server program (hereinafter referred to as a server) 3A and a controller program (hereinafter referred to as a controller) 3B are installed. These are expanded in the memory 4 by the CPU 2 and executed. A plurality of content data is recorded in the HDD 3. The content data is audio data, and in this example is an audio file. Upon receiving the audio file transmission request from the AV amplifier 11, the server 3A reads the audio file from the HDD and transmits it to the AV amplifier 11 via the LAN.

  The controller 3B controls content reproduction of the AV amplifier 11. When an audio file to be reproduced is selected from the audio files recorded on the HDD 3 by a user operation, the controller 3B transmits a reproduction instruction for the selected audio file to the AV amplifier 11 via the LAN.

  The controller 3B stores the controller-side volume value in the memory 4. The controller-side volume value is a volume value managed on the controller 3B side in order to adjust the volume value of the AV amplifier 11 on the controller 3B side. When an instruction to change the controller-side volume value is input by a user operation, the controller 3B transmits the changed controller-side volume value to the AV amplifier 11, and changes the volume value of the AV amplifier 11.

  FIG. 2 is a diagram showing an operation screen of the controller 3B. The operation screen includes an area 21 indicating the AV amplifier 11 to be controlled, an area 22 indicating an audio file to be played back by the AV amplifier 11, and an area 23 indicating various operation buttons. The area 23 indicates the controller-side volume value. The slide bar 24 shown is included. The controller-side volume value can be changed within the range of the controller-side minimum volume value to the controller-side maximum volume value (for example, although not limited to 0 to 100) by moving the slide bar. The controller-side minimum volume value and the controller-side maximum volume value are registered in the memory 4 in advance.

  The operation unit 5 is for inputting a user operation, and is, for example, a mouse, a keyboard, a remote controller, or the like. The display unit 6 displays an operation screen of the controller 3B in FIG. 2, and is, for example, an LCD. The communication unit 7 communicates with the AV amplifier 11 via a LAN, and is, for example, a LAN interface.

  The AV amplifier 11 includes a control unit 12, a memory (ROM, RAM, etc.) 13, a DSP 14, an amplification unit 15, a volume adjustment unit 16, a communication unit 17, an operation unit 18, and a display unit 19. . The control unit 12 executes each process to be described later based on an AV amplifier operation program stored in the memory 13, and is, for example, a microcomputer. When receiving the audio file playback instruction from the controller 3B, the control unit 12 requests the server 3A to transmit the audio file.

  The communication part 17 communicates with PC1 via LAN, for example, is a LAN interface. When the communication unit 17 receives an audio file from the server 3B, the DSP 14 performs decoding and D / A conversion on the audio file to generate an analog audio signal. The volume adjusting unit 16 adjusts the volume value of the audio signal, and the amplifying unit 15 amplifies the audio signal and outputs sound from a speaker connected to the outside. The operation unit 18 is used for inputting a user operation, and is an operation button, a remote controller, or the like. The operation unit 18 includes a volume adjustment knob for changing the volume value of the volume adjustment unit 16 (referred to as amplifier-side volume value VA). The display unit 19 displays the amplifier-side volume value VA and the like, and is, for example, an FL tube.

  When the controller 12 receives the controller-side volume value VC from the controller 3B, the controller 12 converts the controller-side volume value VC into the amplifier-side volume value VA, and causes the volume adjuster 16 to change the volume. In addition, when the amplifier-side volume value is changed by the volume adjustment knob or the user operation of the remote controller, the control unit 12 changes the changed amplifier-side volume value to the controller-side volume value and transmits it to the controller 3B. When the controller-side volume value is received, the controller 3B changes the controller-side volume value stored in the memory 4 to the received value, and moves the slide bar to the controller-side volume value. Thus, even when the amplifier-side volume value is changed by a user operation of the volume adjustment knob or the remote controller, the controller-side volume value managed by the controller 3B can also be changed. As a result, the controller-side volume value can be changed by the user operation. By changing the value, it is possible to appropriately change the volume value on the amplifier side.

  Next, the operation of this example will be described. FIG. 3 is a flowchart showing processing of the control unit 12 of the AV amplifier 11, and FIG. 4 is a flowchart showing processing of the controller 3B. As shown in FIG. 4, for example, when the AV amplifier 11 is selected by a user operation from the devices connected to the LAN and connected to the AV amplifier 11, the controller 3B is connected to the AV amplifier 11 and the controller-side maximum volume value VCmax (100 in this example). ) And the controller-side minimum volume value VCmin (0 in this example) are transmitted to the AV amplifier 11 (S11).

  As shown in FIG. 3, the control unit 12 of the AV amplifier 11 determines whether or not the controller-side maximum volume value VCmax and the controller-side minimum volume value VCmin are received (S1). If received (YES in S1), the control unit 12 associates the amplifier-side maximum volume value VAmax with the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin with the controller-side minimum volume value VCmin, and the memory 13 (S2). The amplifier-side maximum volume value VAmax is the maximum volume value of the volume adjustment unit 16 that can be changed according to the user operation of the operation unit 18, and is not particularly limited, but is 0 (dB) in this example. The amplifier-side minimum volume value VAmin is a minimum volume value of the volume adjustment unit 16 that can be changed according to a user operation of the operation unit 18, and is not particularly limited, but is −50 (dB) in this example. These values are registered in the memory 13 in advance.

The control unit 12 converts the current amplifier-side volume value VA into the controller-side volume value VC and notifies the controller 3B (S3). Specifically, the control unit 12 calculates the controller-side volume value VC based on the following formula 1. For example, if the amplifier-side volume value VA is −20 (dB), the controller-side volume value VC is 60.

  As shown in FIG. 4, the controller 3B determines whether or not the controller-side volume value has been received from the AV amplifier 11 (S12). If not received (NO in S12), the process proceeds to S14. If received (YES in S12), the controller 3B stores the received controller-side volume value VC in the memory 4 and changes the slide bar based on the received controller-side volume value VC (S13). If the received controller-side volume value VC is 60, the slide bar is moved to 60.

  The controller 3B determines whether or not the slide bar has been moved by a user operation (S14). If not moved (NO in S14), the process returns to S12. If it has been moved (YES in S14), the controller 3B stores the controller-side volume value VC determined by the moved slide bar position in the memory 4 and transmits the controller-side volume value VC to the AV amplifier 11 ( S15).

As shown in FIG. 3, the control unit 12 of the AV amplifier 11 determines whether or not the controller-side volume value VC has been received (S4). If not received (NO in S4), the process proceeds to S6. If received (YES in S4), the control unit 12 converts the received controller-side volume value VC into an amplifier-side volume value, and causes the volume adjustment unit 16 to change the volume (S5). Specifically, the control unit 12 calculates the amplifier-side volume value based on the following Equation 2. For example, if the controller-side volume value VC is 80, the amplifier-side volume value VA is −10 (dB).

  Subsequently, the control unit 12 determines whether or not the volume adjustment knob (or the volume adjustment button of the remote controller) is operated by a user operation (S6). That is, it is determined whether or not an instruction to change the amplifier-side volume value VA is input by a user operation. If not operated (NO in S6), the process returns to S4. When operated (YES in S6), the control unit 12 changes the volume of the volume adjustment unit 16 to the amplifier-side volume value VA determined according to the operation position of the volume adjustment knob (S7). The control unit 12 changes the changed amplifier-side volume value VA to the controller-side volume value VA based on the above formula 1, and notifies the controller 3B (S8).

  As before, the controller 3B determines whether or not the controller-side volume value has been received from the AV amplifier 11 (S12). If received (YES in S12), the controller 3B stores the received controller-side volume value VC in the memory 4 and changes the slide bar based on the received controller-side volume value VC (S13).

  As described above, the controller-side volume value VC managed by both is always made the same by mutually reporting the controller-side volume value between the controller 11 of the AV amplifier 11 and the controller 3B. Can do. Therefore, when the controller-side volume value is changed, the amplifier-side volume value VA can be changed to an appropriate value. Note that, when the controller 3B and the AV amplifier 11 are connected, the controller-side volume value of the controller 3B may be transmitted to the AV amplifier 11, and the amplifier-side volume value of the AV amplifier 11 may be matched with the controller-side volume value. The same applies to the following other embodiments.

[Example 2]
Next, another preferred embodiment of the present invention will be described. Compared with the first embodiment, in this example, the controller 3B performs conversion between the controller-side volume value VC and the amplifier-side volume value VA. Therefore, the amplifier-side volume value is mutually notified between the controller 3B and the control unit 12. FIG. 5 is a flowchart showing processing of the control unit 12 of the AV amplifier 11, and FIG. 6 is a flowchart showing processing of the controller 3B. When the controller 3B selects, for example, the AV amplifier 11 from the devices connected to the LAN by a user operation and connects to the AV amplifier 11, the controller 12 of the AV amplifier 11 is connected to the amplifier side as shown in FIG. The maximum volume value VAmax (0 dB in this example) and the amplifier-side minimum volume value VAmin (−50 dB in this example) are read from the memory 13 and transmitted to the controller 3B (S21).

  As shown in FIG. 6, the controller 3B determines whether or not the amplifier-side maximum volume value VAmax and the amplifier-side minimum volume value VAmin have been received (S31). If received (YES in S31), the controller 3B causes the amplifier-side maximum volume value VAmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin to correspond to the controller-side minimum volume value VCmin, and Store (S32).

  As shown in FIG. 5, the control unit 12 of the AV amplifier 11 notifies the current amplifier-side volume value VA to the controller 3B (S22). As shown in FIG. 6, the controller 3B determines whether or not the amplifier-side volume value VA is received from the AV amplifier 11 (S33). If not received (NO in S33), the process proceeds to S35. If received (YES in S33), the controller 3B converts the received amplifier-side volume value VA into the controller-side volume value VC based on the above equation 1, stores it in the memory 4, and stores the slide bar in the controller-side volume value VC. (S34).

  Subsequently, the controller 3B determines whether or not the slide bar has been moved by a user operation (S35). If not moved (NO in S35), the process returns to S33. When moved (YES in S35), the controller 3B stores in the memory 4 the controller-side volume value VC determined by the position of the slide bar after movement, and the controller-side volume value VC is amplified based on the above equation 2. The side volume value VA is converted and transmitted to the AV amplifier 11 (S36).

  As shown in FIG. 5, the control unit 12 of the AV amplifier 11 determines whether or not the amplifier-side volume value VA has been received (S23). If not received (NO in S23), the process proceeds to S25. If received (YES in S23), the control unit 12 changes the volume of the volume adjustment unit 16 to the received amplifier-side volume value VA (S24). Subsequently, the control unit 12 determines whether or not the volume adjustment knob (or the volume adjustment button of the remote controller) is operated by a user operation (S25). That is, it is determined whether or not an instruction to change the amplifier-side volume value VA is input by a user operation. If not operated (NO in S25), the process returns to S23. When operated (YES in S25), the control unit 12 changes the volume of the volume adjustment unit 16 to the amplifier-side volume value VA determined according to the operation position of the volume adjustment knob (S26). The control unit 12 notifies the controller 3B of the changed amplifier-side volume value VA (S27).

  As before, the controller 3B determines whether or not the amplifier-side volume value VA is received from the AV amplifier 11 (S33). If received (YES in S33), the controller 3B converts the received amplifier-side volume value VA into the controller-side volume value VC based on the above equation 1, stores it in the memory 4, and stores the slide bar in the controller-side volume value VC. (S34).

  As described above, the amplifier-side volume value VA managed by both is made the same by mutually reporting the amplifier-side volume value between the controller 11 of the AV amplifier 11 and the controller 3B. it can. Therefore, when the controller-side volume value is changed, the amplifier-side volume value VA can be changed to an appropriate value.

[Example 3]
Next, still another preferred embodiment of the present invention will be described. Compared to the second embodiment, in this example, the controller 3B displays not the controller-side volume value VC (controller-side maximum volume value VCmax, controller-side minimum volume value VCmin) but the amplifier-side volume value VA (amplifier-side maximum volume). The volume value VAmax and the amplifier-side minimum volume value VAmin) are displayed. FIG. 7 is a flowchart showing the processing of the controller 3B. Note that the processing of the control unit 12 of the AV amplifier 11 is the same as that in FIG.

  As shown in FIG. 7, the controller 3B determines whether or not the amplifier-side maximum volume value VAmax and the amplifier-side minimum volume value VAmin are received (S41). If received (YES in S41), the controller 3B causes the amplifier-side maximum volume value VAmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin to correspond to the controller-side minimum volume value VCmin, and Remember. Then, as shown in FIG. 8, the controller 3B changes the display of the slide bar from the controller-side volume value VC to the amplifier-side volume value VA (S42). Further, the controller 3B changes the controller-side maximum volume value VCmax displayed on the slide bar to the amplifier-side maximum volume value VAmax, and changes the controller-side minimum volume value VCmin to the amplifier-side minimum volume value VAmin. For example, if the amplifier-side maximum volume value VAmax is 0 dB and the amplifier-side minimum volume value VAmin is −50 dB, the movable range of the slide bar is changed to −50 to 0 as shown in FIG.

  The controller 3B determines whether or not the amplifier-side volume value VA has been received (S43). If received (YES in S43), the controller 3B stores the amplifier-side volume value VA in the memory 4 and moves the position of the slide bar based on the amplifier-side volume value VA (S44). Further, the controller 3B determines whether or not the slide bar has been moved by a user operation (S45). When it is moved (YES in S45), the controller 3B stores the amplifier-side volume value VA specified by the position of the slide bar in the memory 4 and notifies the AV amplifier 11 (S46).

  As described above, according to this example, the controller 3B changes the display of the slide bar to the amplifier-side volume value VA based on the amplifier-side maximum volume value VAmax and the amplifier-side minimum volume value VAmin received from the AV amplifier 11, User operation is accepted not by the controller-side volume value VC but by the amplifier-side volume value VA. Therefore, conversion processing between the amplifier-side volume value VA and the controller-side volume value VC becomes unnecessary.

[Example 4]
Next, still another preferred embodiment of the present invention will be described. Compared to the first embodiment, in this example, the amplifier-side set maximum volume value VASmax that is the maximum value of the amplifier-side volume value VA that can be adjusted by the controller 3B (that is, by the controller-side volume value) and the controller 3B ( That is, the amplifier-side set minimum volume value VASmin, which is the minimum value of the amplifier-side volume value VA that can be adjusted (by the controller-side volume value), is set in the memory 13. In other words, the range of the amplifier-side volume value VA that can be adjusted by the controller 3B is different from the range of the amplifier-side volume value VA that can be adjusted by the operation unit 18. The amplifier-side set maximum volume value VASmax is set to a value smaller than the amplifier-side maximum volume value VAmax, and is set to a value that does not damage the amplification unit 15 and the speaker. The amplifier-side set minimum volume value VASmin is set to a value larger than the amplifier-side minimum volume value VAmin. For example, the amplifier-side set maximum volume value VASmax is −10 dB, and the amplifier-side set minimum volume value VASmin is −40 dB. The amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin may be changed by a user operation or may not be changed.

  FIG. 9 is a flowchart showing processing of the control unit 12 of the AV amplifier 11. The processing of the controller 3B is the same as that in FIG. The control unit 12 of the AV amplifier 11 determines whether or not the controller-side maximum volume value VCmax and the controller-side minimum volume value VCmin are received (S51). If received (YES in S51), the control unit 12 causes the amplifier-side set maximum volume value VASmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side set minimum volume value VASmin to correspond to the controller-side minimum volume value VCmin, It is stored in the memory 13 (S52).

The control unit 12 converts the current amplifier-side volume value VA into the controller-side volume value VC and notifies the controller 3B (S53). Specifically, the control unit 12 is based on the following Equation 3 (that is, based on the amplifier-side set maximum volume value VASmax, the amplifier-side set minimum volume value VASmin, the controller-side maximum volume value VCmax, and the controller-side minimum volume value VCmin). Thus, the controller-side volume value VC is calculated. For example, if the amplifier-side volume value VA is −25 (dB), the controller-side volume value VC is 50.

  However, if the amplifier-side volume value VA is equal to or greater than the amplifier-side set maximum volume value VASmax, the amplifier-side volume value VA is calculated as the amplifier-side set maximum volume value VASmax. That is, if the amplifier-side volume value VA is equal to or larger than the amplifier-side set maximum volume value VASmax, the calculated controller-side volume value VC is the controller-side maximum volume value VCmax. Similarly, if the amplifier-side volume value VA is equal to or less than the amplifier-side set minimum volume value VASmin, the amplifier-side volume value VA is calculated as the amplifier-side set minimum volume value VASmin. That is, if the amplifier-side volume value VA is equal to or less than the amplifier-side set minimum volume value VASmin, the calculated controller-side volume value VC is the controller-side minimum volume value VCmin.

Further, the control unit 12 determines whether or not the controller-side volume value VC has been received (S54). If not received (NO in S54), the process proceeds to S56. If received (YES in S54), the control unit 12 converts the received controller-side volume value VC into the amplifier-side volume value VA, and causes the volume adjustment unit 16 to change the volume (S55). Specifically, the control unit 12 is based on the following equation 4 (that is, based on the amplifier-side set maximum volume value VASmax, the amplifier-side set minimum volume value VASmin, the controller-side maximum volume value VCmax, and the controller-side minimum volume value VCmin). Thus, the amplifier-side volume value VA is calculated. For example, if the controller-side volume value VC is 80, the amplifier-side volume value VA is −16 (dB).

  Subsequently, the control unit 12 determines whether or not the volume adjustment knob (or the volume adjustment button of the remote controller) is operated by a user operation (S56). That is, it is determined whether or not an instruction to change the amplifier-side volume value VA is input by a user operation. If not operated (NO in S56), the process returns to S54. When operated (YES in S56), the control unit 12 changes the volume of the volume adjustment unit 16 to the amplifier-side volume value VA determined according to the operation position of the volume adjustment knob (S57). The control unit 12 changes the amplifier-side volume value VA after the change to the controller-side volume value VC based on the above equation 3, and notifies the controller 3B (S58).

  As described above, the controller-side volume value VC managed by both can be made the same by mutually reporting the controller-side volume value between the control unit 11 of the AV amplifier 11 and the controller 3B. it can. Therefore, when the controller-side volume value is changed, the amplifier-side volume value VA can be changed to an appropriate value. Further, since the controller-side volume value VC and the amplifier-side volume value VA are converted based on the amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin, the controller-side volume value VC is converted into the controller-side maximum volume value. Even if it is changed to VCmax, the amplifier-side volume value only increases up to the amplifier-side set maximum volume value VASmax. Therefore, damage to the amplification unit 15 and the speaker is prevented. Note that only the amplifier side set maximum volume value VASmax may be provided without providing the amplifier side set minimum volume value VASmin. In this case, based on the amplifier side set maximum volume value VASmax and the amplifier side minimum volume value VAmin. The controller-side volume value VC and the amplifier-side volume value VA are converted.

[Example 5]
Next, still another preferred embodiment of the present invention will be described. Compared to the second embodiment, in this example, the amplifier-side set maximum volume value VASmax, which is the maximum value of the amplifier-side volume value VA that can be adjusted by the controller 3B (that is, by the controller-side volume value VC), and the controller 3B In other words, the amplifier-side set minimum volume value VASmin, which is the minimum value of the amplifier-side volume value VA that can be adjusted (by the controller-side volume value VC), is set in the memory 13. The amplifier-side set maximum volume value VASmax is set to a value smaller than the amplifier-side maximum volume value VAmax, and is set to a value that does not damage the amplification unit 15 and the speaker. The amplifier-side set minimum volume value VASmin is set to a value larger than the amplifier-side minimum volume value VAmin. For example, the amplifier-side set maximum volume value VASmax is −10 dB, and the amplifier-side set minimum volume value VASmin is −40 dB. The amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin may be changed by a user operation or may not be changed.

  FIG. 10 is a flowchart showing processing of the control unit 12 of the AV amplifier 11, and FIG. 11 is a flowchart showing processing of the controller 3B. When the controller 3B selects, for example, the AV amplifier 11 from the devices connected to the LAN by a user operation and connects to the AV amplifier 11, the controller 12 of the AV amplifier 11 is connected to the amplifier side as shown in FIG. The set maximum volume value VASmax (−10 dB in this example) and the amplifier-side set minimum volume value VASmin (−40 dB in this example) are read from the memory 13 and transmitted to the controller 3B (S61). In addition, since the process after the control part 12 is the same as the process of FIG. 5, description is used (a code | symbol is made the same).

  As shown in FIG. 11, the controller 3B determines whether or not the amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin have been received (S71). If received (YES in S71), the controller 3B causes the amplifier-side set maximum volume value VASmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side set minimum volume value VASmin to correspond to the controller-side minimum volume value VCmin, and the memory 4 (S72).

  The controller 3B determines whether or not the amplifier-side volume value VA is received from the AV amplifier 11 (S73). If not received (NO in S73), the process proceeds to S75. If received (YES in S73), the controller 3B converts the received amplifier-side volume value VA into a controller-side volume value VC based on the above equation 3, stores it in the memory 4, and stores the slide bar on the controller-side volume value VC. (S74).

  Subsequently, the controller 3B determines whether or not the slide bar has been moved by a user operation (S75). If not moved (NO in S75), the process returns to S73. When moved (YES in S75), the controller 3B stores the controller-side volume value VC determined by the moved slide bar position in the memory 4, and the controller-side volume value VC is amplified based on the above equation 4. The side volume value VA is converted and transmitted to the AV amplifier 11 (S76).

  As described above, the amplifier-side volume value VA managed by both is made the same by mutually reporting the amplifier-side volume value between the controller 11 of the AV amplifier 11 and the controller 3B. it can. Therefore, when the controller-side volume value is changed, the amplifier-side volume value VA can be changed to an appropriate value. Since the controller-side volume value VC and the amplifier-side volume value VA are converted based on the amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin, the controller-side volume value VC becomes the controller-side maximum volume value VCmax. Even if it is changed, the amplifier-side volume value only increases up to the amplifier-side set maximum volume value VASmax. Therefore, damage to the amplification unit 15 and the speaker is prevented. Note that only the amplifier side set maximum volume value VASmax may be provided without providing the amplifier side set minimum volume value VASmin.

[Example 6]
Next, still another preferred embodiment of the present invention will be described. Compared to the fifth embodiment, in this embodiment, the controller 3B displays the amplifier-side volume value on the slide bar instead of the controller-side volume value. FIG. 12 is a flowchart showing the processing of the controller 3B. Note that the processing of the control unit 12 of the AV amplifier 11 is the same as that in FIG.

  As shown in FIG. 12, the controller 3B determines whether or not the amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin are received (S81). If received (YES in S81), the controller 3B causes the amplifier-side set maximum volume value VASmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side set minimum volume value VASmin to correspond to the controller-side minimum volume value VCmin, and the memory 4 is stored. Then, as shown in FIG. 13, the controller 3B changes the display of the slide bar from the controller-side volume value VC to the amplifier-side volume value VA (S82). That is, the controller-side maximum volume value VCmax displayed on the slide bar is changed to the amplifier-side set maximum volume value VASmax, and the controller-side minimum volume value VCmin is changed to the amplifier-side set minimum volume value VASmin. For example, if the amplifier-side set maximum volume value VASmax is −10 dB and the amplifier-side set minimum volume value VASmin is −40 dB, the movable range of the slide bar is changed to −40 to −10.

  The controller 3B determines whether or not the amplifier-side volume value VA has been received (S83). If received (YES in S83), the controller 3B stores the amplifier-side volume value VA in the memory 4 and moves the position of the slide bar based on the amplifier-side volume value VA (S84). In addition, the controller 3B determines whether or not the slide bar has been moved by a user operation (S85). When moved (YES in S85), the controller 3B stores the amplifier-side volume value VA specified by the position of the slide bar in the memory 4, and notifies the AV amplifier 11 (S86).

  As described above, according to this example, the display of the slide bar is changed to the amplifier-side volume value VA based on the amplifier-side set maximum volume value VASmax and the amplifier-side set minimum volume value VASmin received from the AV amplifier 11 by the controller 3B. Then, the user operation is accepted not by the controller-side volume value VC but by the amplifier-side volume value VA. Therefore, conversion processing between the amplifier-side volume value VA and the controller-side volume value VC becomes unnecessary.

[Example 7]
Next, still another preferred embodiment of the present invention will be described. Compared with the above embodiments, in this example, the controller-side volume value VC and the amplifier-side volume value VA are originally used as a common volume value V. Therefore, conversion processing between the controller-side volume value VC and the amplifier-side volume value VA is not required by the controller 12 or the controller 3B. FIG. 14 is a flowchart showing processing of the control unit 12 of the AV amplifier 11, and FIG. 15 is a flowchart showing processing of the controller 3B.

  When the controller 3B and the AV amplifier 11 are connected, as shown in FIG. 14, the control unit 12 of the AV amplifier 11 reads the current volume value V of the AV amplifier 11 from the memory and transmits it to the controller 3B (S90). ). As shown in FIG. 15, when the controller 3B receives the volume value V from the controller 3B (YES in S101), the controller 3B stores the received volume value V in the memory 4 (S101), and slides based on the received volume value V. The bar is moved (S102).

  As shown in FIG. 15, when the slide bar is moved by a user operation (YES in S103), the controller 3B stores the volume value V determined by the position of the slide bar after the movement in the memory 4, and after the change Is transmitted to the AV amplifier 11 (S104). As shown in FIG. 14, when receiving the volume value V from the controller 3B (YES in S91), the control unit 12 of the AV amplifier 11 changes the volume of the volume adjusting unit 16 based on the received volume value V ( S92).

  When the volume adjustment knob is operated (YES in S93), the control unit 12 changes the volume of the volume adjustment unit 16 to the volume value V determined by the position of the volume adjustment knob (S94). Is sent to the controller 3B (S95). As shown in FIG. 15, when the controller 3B receives the volume value V from the controller 3B (YES in S101), the controller 3B stores the received volume value V in the memory 4 (S101), and slides based on the received volume value V. The bar is moved (S102).

[Example 8]
Next, still another preferred embodiment of the present invention will be described. Compared to the above embodiments, in this example, when the controller 3B is disconnected from the AV amplifier 11, the controller-side volume value VC (or amplifier-side volume value VA, volume value V) at that time is stored in the memory 4. Keep it. Next time, when the controller 3B is connected to the AV amplifier 11, the controller-side volume value VC (or amplifier-side volume value VA, volume value V) is read from the memory 4, and the slide bar is moved (controller-side volume value VC). (Or the amplifier-side volume value VA and the volume value V) are changed) and transmitted to the AV amplifier 11. Thus, even when the amplifier side volume value is changed by operating the operation unit of the AV amplifier 11 when the AV amplifier 11 is not connected to the controller 3B, the controller 3B is connected again. The AV amplifier 11 can be restored to the amplifier-side volume value when it was last connected to the controller 3B.

  FIG. 16 is a flowchart showing the processing of the controller 3B of the present example corresponding to the first embodiment (FIGS. 3 and 4), and the processing of the AV amplifier 11 is obtained by omitting the processing of S3 in FIG. If the controller 3B determines that the connection with the AV amplifier 11 is to be disconnected (YES in S112), the controller-side volume value VC currently stored in the memory 4 is used as the identification information of the AV amplifier 11 (although it is not particularly limited, the device number and serial number). The information is stored in the memory 4 in association with the AV amplifier 11 such as information that can uniquely identify the AV amplifier 11 (S113). The identification information of the AV amplifier 11 can be acquired from the AV amplifier 11 at the time of connection.

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the controller-side volume value VC at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4, the position of the slide bar is changed, and the controller-side volume value VC is transmitted to the AV amplifier 11 (S 111). When receiving the controller-side volume value VC (YES in S4), the control unit 12 of the AV amplifier 11 converts the controller-side volume value VC into an amplifier-side volume value, and causes the volume adjustment unit 16 to change the volume (S5).

  When a plurality of AV amplifiers 11 can be connected to the controller 3B, the controller 3B associates each of the plurality of AV amplifiers 11 with the identification information of the AV amplifier 11, and the controller 3B, the AV amplifier 11, and the like. Stores in the memory 4 the controller-side volume value VC at the time of disconnection. Then, when the controller 3B and the AV amplifier 11 are connected next time, the controller 3B reads the controller-side volume value VC stored in the memory 4 in association with the identification information of the connected AV amplifier 11, The controller-side volume value VC is transmitted to the connected AV amplifier 11 that moves the slide bar.

  FIG. 17 is a flowchart showing the process of the controller 3B of the present example corresponding to the second embodiment (FIGS. 5 and 6), and the process of the AV amplifier 11 is obtained by omitting the process of S22 in FIG. If controller 3B determines to disconnect from AV amplifier 11 (YES in S122), controller-side volume value VC currently stored in memory 4 is stored in memory 4 in association with the identification information of AV amplifier 11 (S123). ).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the controller-side volume value VC at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4, the position of the slide bar is changed, converted to the amplifier-side volume value VA, and transmitted to the AV amplifier 11 (S 121). When receiving the amplifier-side volume value VA (YES in S23), the control unit 12 of the AV amplifier 11 causes the volume adjusting unit 16 to change the volume (S24).

  FIG. 18 is a flowchart showing the processing of the controller 3B of this example corresponding to the third embodiment (FIG. 7). If the controller 3B determines to disconnect from the AV amplifier 11 (YES in S132), the amplifier-side volume value VA currently stored in the memory 4 is stored in the memory 4 in association with the identification information of the AV amplifier 11 (S133). ).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the amplifier-side volume value VA at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4, the position of the slide bar is changed, and the amplifier-side volume value VA is transmitted to the AV amplifier 11 (S 131). When receiving the amplifier-side volume value VA, the control unit 12 of the AV amplifier 11 causes the volume adjustment unit 16 to change the volume.

  FIG. 19 is a flowchart showing the processing of the controller 3B of the present example corresponding to the fifth embodiment (FIGS. 10 and 11), and the processing of the AV amplifier 11 is obtained by omitting the processing of S22 in FIG. If controller 3B determines to disconnect from AV amplifier 11 (YES in S142), controller-side volume value VC currently stored in memory 4 is stored in memory 4 in association with the identification information of AV amplifier 11 (S143). ).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the controller-side volume value VC at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4, the position of the slide bar is changed, converted to the amplifier-side volume value VA, and transmitted to the AV amplifier 11 (S 141). When receiving the amplifier-side volume value VA (YES in S23), the control unit 12 of the AV amplifier 11 causes the volume adjusting unit 16 to change the volume (S24).

  FIG. 20 is a flowchart showing the processing of the controller 3B of this example corresponding to the sixth embodiment (FIG. 12). If the controller 3B determines to disconnect from the AV amplifier 11 (YES in S152), the amplifier-side volume value VA currently stored in the memory 4 is stored in the memory 4 in association with the identification information of the AV amplifier 11 (S153). ).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the amplifier-side volume value VA at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4 is read, the position of the slide bar is changed, and transmitted to the AV amplifier 11 (S151). When receiving the amplifier-side volume value VA, the control unit 12 of the AV amplifier 11 causes the volume adjustment unit 16 to change the volume.

  FIG. 21 is a flowchart showing the processing of the controller 3B of the present example corresponding to the seventh embodiment (FIGS. 14 and 15), and the processing of the AV amplifier 11 is obtained by omitting the processing of S90 in FIG. If the controller 3B determines to disconnect from the AV amplifier 11 (YES in S162), the controller 3B stores the volume value V currently stored in the memory 4 in the memory 4 in association with the identification information of the AV amplifier 11 (S163).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the volume value V at the time of the previous disconnection stored in the memory 4 in association with the acquired identification information from the memory 4. Reading, changing the position of the slide bar, and transmitting to the AV amplifier 11 (S161). When receiving the volume value V (YES in S91), the control unit 12 of the AV amplifier 11 causes the volume adjustment unit 16 to change the volume (S92).

  If necessary, the controller 3B associates the amplifier-side maximum volume value VAmax (or the amplifier-side set maximum volume value VASmax) with the identification information of the AV amplifier 11 when the connection with the AV amplifier 11 is released. The side minimum volume value VAmin (or the amplifier side set minimum volume value VASmin) is stored in the memory 4, and these information is read from the memory at the next connection, so that the AV amplifier 11 stores these information at the next connection. There is no need to send the data to the controller 3B again.

[Example 9]
In general, when a plurality of AV amplifiers 11 can be connected to the controller 3B, the controller screen of FIG. 2 is generated for each AV amplifier, and the volume of each AV amplifier 11 is controlled independently. However, in each of the above embodiments, only one controller screen including one slide bar is generated for a plurality of AV amplifiers 11, and the volume of the plurality of AV amplifiers 11 is controlled to the same value all at once. Good. The following description is based on the seventh embodiment, but the same applies to other embodiments. 22 and 23 show the processing of the controller 3B. The processing of the AV amplifier 11 is substantially the same as that in FIG. 24 to 27 are schematic diagrams for explaining command transmission / reception in this example.

  First, the initial operation will be described. 22 and 24, when a plurality of AV amplifiers 11A and 11B are connected to the controller 3B, (1) the controller 3B has a volume value V (or a controller-side volume corresponding to the current slide bar position). Value, amplifier-side volume value, and so on) are transmitted to the AV amplifiers 11A and 11B (S171 in FIG. 22). (2) Upon receiving the volume value from the controller 3B, the AV amplifiers 11A and 11B change their volume values (S91 and S92 in FIG. 14). As a result, the volume values V of the controller 3B and the AV amplifiers 11A and 11B can be matched.

  Alternatively, as shown in FIGS. 23 and 25, when a plurality of AV amplifiers 11A and 11B are connected to the controller 3B, (1) each AV amplifier 11A and 11B transmits the current volume value V to the controller 3B ( S90 of FIG. 14). (2) The controller 3B selects one volume value (for example, but not limited to the minimum volume value) from the volume values V received from the AV amplifiers 11A and 11B, and changes the position of the slide bar. (S181, S182 in FIG. 23). For example, if the volume value V of the AV amplifier 11A is smaller than the volume value V of the AV amplifier 11B, the volume value V of the AV amplifier 11 is selected and the position of the slide bar of the controller 3B is changed. (3) The controller 3B is connected to the controller 3B and transmits the selected volume value V (of the AV amplifier 11A) to all AV amplifiers (in this case, the AV amplifier 11B) for which the volume value has not been selected. (S183 in FIG. 23). (4) Upon receiving the volume value from the controller 3B, the AV amplifier 11B changes the volume value of the AV amplifier 11B (S91, S92 in FIG. 14). As a result, the volume values V of the controller 3B and the AV amplifiers 11A and 11B can be matched. By selecting the smaller volume value, it is possible to prevent the volume values of the other AV amplifiers 11 from rapidly increasing against the user's will.

  Next, as shown in FIG. 26, (1) when the slide bar of the controller 3B is changed by a user operation (S175 in FIGS. 22 and 23), the controller 3B stores the changed volume value V in the memory. Then, the slide bar is moved, and the changed volume value V is transmitted to all AV amplifiers 11 (S176). (3) Upon receiving the volume value from the controller 3B, the AV amplifiers 11A and 11B change their own volume values (S91 and S92 in FIG. 14).

  On the other hand, as shown in FIG. 27, (1) when the volume value V of one AV amplifier (here, AV amplifier 11A) is changed by the user's operation of the volume adjustment knob (S93, S94 in FIG. 14), 2) The AV amplifier 11A transmits the changed volume value V to the controller 3B (S95). (3) Upon receiving the volume value V from the AV amplifier 11A (S172 in FIGS. 22 and 23), the controller 3B changes the position of the slide bar to the received volume value V (S173). (4) The controller 3B transmits the changed volume value V to all AV amplifiers 11 (here, the AV amplifier 11B) connected to the controller 3B other than the AV amplifier 11A that has transmitted the volume value V (S174). . (5) Upon receiving the volume value from the controller 3B, the AV amplifier 11B changes the volume value of the AV amplifier 11B (S91, S92 in FIG. 14).

[Example 10]
Next, still another preferred embodiment of the present invention will be described. Compared with the first and second embodiments, in this example, both the AV amplifier 11 and the controller 3B perform conversion between the controller-side volume value VC and the amplifier-side volume value VA. FIG. 28 is a flowchart showing processing of the control unit 12 of the AV amplifier 11, and FIG. 29 is a flowchart showing processing of the controller 3B. When the controller 3B is connected to the AV amplifier 11, the control unit 12 of the AV amplifier 11 reads the amplifier-side maximum volume value VAmax (0 dB in this example) and the amplifier-side minimum volume value VAmin from the memory 13 and transmits them to the controller 3B ( S191).

  The controller 3B determines whether or not the amplifier-side maximum volume value VAmax and the amplifier-side minimum volume value VAmin are received (S202). If received (YES in S202), the controller 3B causes the amplifier-side maximum volume value VAmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin to correspond to the controller-side minimum volume value VCmin, and Store (S203).

  In addition, the controller 3B transmits the controller-side maximum volume value VCmax and the controller-side minimum volume value VCmin to the AV amplifier 11 (S201).

  The control unit 12 of the AV amplifier 11 determines whether or not the controller-side maximum volume value VCmax and the controller-side minimum volume value VCmin are received (S192). If received (YES in S192), the control unit 12 associates the amplifier-side maximum volume value VAmax with the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin with the controller-side minimum volume value VCmin, and the memory 13 (S193).

  The control unit 12 of the AV amplifier 11 notifies the current amplifier-side volume value VA to the controller 3B (S194). The controller 3B determines whether or not the amplifier-side volume value VA is received from the AV amplifier 11 (S204). If received (YES in S204), the controller 3B converts the received amplifier-side volume value VA into the controller-side volume value VC based on the above equation 1, stores it in the memory 4, and stores the slide bar on the controller-side volume value VC. Is changed based on (S205).

  Subsequently, the controller 3B determines whether or not the slide bar has been moved by a user operation (S206). If it has been moved (YES in S206), the controller 3B stores the controller-side volume value VC determined by the moved slide bar position in the memory 4 and transmits it to the AV amplifier 11 (S207).

  The control unit 12 of the AV amplifier 11 determines whether or not the controller-side volume value VC has been received (S195). If received (YES in S195), the control unit 12 converts the received controller-side volume value VC into the amplifier-side volume value VA based on the above equation 2, and changes the volume of the volume adjustment unit 16 (S196). Subsequently, the control unit 12 determines whether or not the volume adjustment knob (or the volume adjustment button of the remote controller) is operated by a user operation (S197). When operated (YES in S197), the control unit 12 changes the volume of the volume adjustment unit 16 to the amplifier-side volume value VA determined according to the operation position of the volume adjustment knob (S198). The controller 12 notifies the controller 3B of the changed amplifier-side volume value VA (S199).

  As before, the controller 3B determines whether or not the amplifier-side volume value VA is received from the AV amplifier 11 (S204). If received (YES in S204), the controller 3B converts the received amplifier-side volume value VA into the controller-side volume value VC based on the above equation 1, stores it in the memory 4, and stores the slide bar on the controller-side volume value VC. Is changed based on (S205).

  FIG. 30 is a flowchart showing another process of the controller 3B. If the controller 3B determines to disconnect from the AV amplifier 11 (YES in S209), the controller-side volume value VC currently stored in the memory 4 is stored in the memory 4 in association with the identification information of the AV amplifier 11 (S210). ).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the controller-side volume value VC at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4, the position of the slide bar is changed, and the controller-side volume value VC is transmitted to the AV amplifier 11 (S 208). When receiving the controller-side volume value VC (YES in S195), the control unit 12 of the AV amplifier 11 converts the controller-side volume value VC into an amplifier-side volume value, and causes the volume adjustment unit 16 to change the volume (S196).

[Example 11]
Next, still another preferred embodiment of the present invention will be described. Compared with the first and second embodiments, in this example, both the AV amplifier 11 and the controller 3B perform conversion between the controller-side volume value VC and the amplifier-side volume value VA. FIG. 31 is a flowchart showing processing of the control unit 12 of the AV amplifier 11, and FIG. 32 is a flowchart showing processing of the controller 3B. When the controller 3B is connected to the AV amplifier 11, the control unit 12 of the AV amplifier 11 reads the amplifier-side maximum volume value VAmax and the amplifier-side minimum volume value VAmin from the memory 13 and transmits them to the controller 3B (S211).

  The controller 3B determines whether or not the amplifier-side maximum volume value VAmax and the amplifier-side minimum volume value VAmin are received (S222). If received (YES in S222), the controller 3B causes the amplifier-side maximum volume value VAmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin to correspond to the controller-side minimum volume value VCmin, and Store (S223).

  Further, the controller 3B transmits the controller-side maximum volume value VCmax and the controller-side minimum volume value VCmin to the AV amplifier 11 (S221).

  The control unit 12 of the AV amplifier 11 determines whether or not the controller-side maximum volume value VCmax and the controller-side minimum volume value VCmin are received (S212). If received (YES in S212), the control unit 12 causes the amplifier-side maximum volume value VAmax to correspond to the controller-side maximum volume value VCmax, the amplifier-side minimum volume value VAmin to correspond to the controller-side minimum volume value VCmin, and the memory 13 (S213).

  The control unit 12 of the AV amplifier 11 converts the current amplifier-side volume value VA into a controller-side volume value VC and notifies the controller 3B (S214). The controller 3B determines whether or not the controller-side volume value VC is received from the AV amplifier 11 (S224). If received (YES in S224), the controller 3B stores the received controller-side volume value VC in the memory 4 and changes the slide bar based on the controller-side volume value VC (S225).

  Subsequently, the controller 3B determines whether or not the slide bar has been moved by a user operation (S226). If it has been moved (YES in S226), the controller 3B stores the controller-side volume value VC determined by the moved slide bar position in the memory 4, converts it into the amplifier-side volume value VA, and sends it to the AV amplifier 11 Transmit (S227).

  The control unit 12 of the AV amplifier 11 determines whether or not the amplifier-side volume value VA has been received (S215). If received (YES in S215), the control unit 12 changes the volume of the volume adjustment unit 16 based on the received amplifier-side volume value VA (S216). Subsequently, the control unit 12 determines whether or not the volume adjustment knob (or the volume adjustment button of the remote controller) is operated by a user operation (S217). When operated (YES in S217), the control unit 12 changes the volume of the volume adjustment unit 16 to the amplifier-side volume value VA determined according to the operation position of the volume adjustment knob (S218). The control unit 12 converts the changed amplifier-side volume value VA into a controller-side volume value and notifies the controller 3B (S219).

  As before, the controller 3B determines whether or not the controller-side volume value VC is received from the AV amplifier 11 (S224). If received (YES in S224), the controller 3B stores the received controller-side volume value VC in the memory 4 and changes the slide bar based on the controller-side volume value VC (S225).

  FIG. 33 is a flowchart showing another process of the controller 3B. If controller 3B determines to disconnect from AV amplifier 11 (YES in S229), controller-side volume value VC currently stored in memory 4 is stored in memory 4 in association with the identification information of AV amplifier 11 (S230). ).

  When the controller 3B is connected to the AV amplifier 11 next time, the controller 3B acquires the identification information from the AV amplifier 11, and stores the controller-side volume value VC at the previous disconnection stored in the memory 4 in association with the acquired identification information. 4, the position of the slide bar is changed, converted into the amplifier-side volume value VA, and transmitted to the AV amplifier 11 (S 228). When receiving the amplifier-side volume value VA (YES in S215), the control unit 12 of the AV amplifier 11 causes the volume adjustment unit 16 to change the volume (S216).

[Example 12]
In this example, there are a plurality of controllers 3B (for example, controllers 3Ba, 3Bb), and each controller can control the AV amplifier 11. The following description is based on the seventh embodiment, but the same applies to other embodiments. The process of the AV amplifier 11 is shown in FIG. 34, and the process of each controller is substantially the same as that of FIG. FIG. 35 is a schematic diagram illustrating command transmission / reception in this example.

  In the controller 3Ba, (1) when the slide bar is changed by a user operation (S103), the controller 3B stores the changed volume value V in the memory, moves the slide bar, and (2) the AV amplifier 11 On the other hand, the changed volume value V is transmitted (S104). (3) When receiving the volume value from the controller 3Ba, the AV amplifier 11 changes its own volume value (S91, S92). Thereafter, (4) the AV amplifier 11 specifies a controller other than the controller that has transmitted the volume value, and transmits the changed volume value to the controller (here, 3Bb) (S231). The controller 3Bb other than the controller that has transmitted the volume value receives the volume value from the AV amplifier 11, stores the volume value V in the memory, and moves the slide bar (S101, S102).

  Or, as shown in FIG. 36, (4) the controller 3Ba transmits the changed volume value V to the controller 3Ba (S103, S104), the controller 3Bb receives the volume value from the controller 3Ba, and the volume The value V may be stored in the memory, and the slide bar may be moved (S101, S102).

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment. In each of the above embodiments, when the volume of the AV amplifier 11 is changed by the controller 3B, the volume value of the AV amplifier 11 is gradually increased or decreased. Thus, even if the user accidentally changes the slide bar of the controller 3B suddenly, the volume of the AV amplifier 11 changes only gradually, so that the user can change the slide bar of the controller 3B in the middle of the change. Can be re-changed to an appropriate position. The controller program 3B itself or a recording medium on which the computer program is recorded may be provided. It may be provided in the form of a computer program for causing the computer to execute the AV amplifier 11 or a recording medium on which the computer program is recorded.

  The present invention can be suitably employed in an amplification device such as an AV amplifier.

1 PC
2 CPU
3 HDD
3A server program 3B controller program 4 memory 5 operation unit 6 display unit 7 communication unit 11 AV amplifier 12 control unit 13 memory 14 DSP
DESCRIPTION OF SYMBOLS 15 Amplification part 16 Volume control part 17 Communication part 18 Operation part 19 Display part

Claims (4)

An amplifying device, and a plurality of controllers connectable to the amplifying device,
The amplification device is
A first receiver for receiving a volume value from the controller;
A first input unit for inputting an instruction to change the volume value in response to a user operation;
A first transmission unit that transmits the volume value input to the first input unit to the controller;
When the first receiving unit receives the volume value, or when the changed volume value is input to the first input unit, the volume for adjusting the volume value of the amplification device based on the volume value An adjustment unit,
The controller is
A display unit for displaying the volume value on a display device;
A second receiver for receiving the volume value from the amplification device;
A change unit that changes the volume value displayed on the display device by the display unit to the volume value received by the second reception unit or input to a second input unit;
The second input unit to which an instruction to change the volume value displayed on the display device by the display unit is input by a user operation;
When an instruction to change the volume value displayed on the display device by the display unit is input by a user operation, the second transmission unit transmits the changed volume value to the amplification device,
In one of the controllers, when an instruction to change the volume value displayed on the display device by the display unit is input by a user operation, the volume value after the change is changed to the amplification device, and Send to the other controller,
In the amplification device, the volume adjustment unit adjusts the volume value of the amplification device based on the received volume value,
In a controller other than the controller that has transmitted the volume value, the change unit changes the volume value that the display unit displays on the display device to the volume value received from the controller. An amplifying device, and a plurality of controllers connectable to the amplifying device,
The amplification device is
A first receiver for receiving a volume value from the controller;
A first input unit for inputting an instruction to change the volume value in response to a user operation;
A first transmission unit that transmits the volume value input to the first input unit to the controller;
When the first receiving unit receives the volume value, or when the changed volume value is input to the first input unit, the volume for adjusting the volume value of the amplification device based on the volume value An adjustment unit,
The controller is
A display unit for displaying the volume value on a display device;
A second receiver for receiving the volume value from the amplification device;
A change unit that changes the volume value displayed on the display device by the display unit to the volume value received by the second reception unit or input to a second input unit;
The second input unit to which an instruction to change the volume value displayed on the display device by the display unit is input by a user operation;
When an instruction to change the volume value displayed on the display device by the display unit is input by a user operation, the second transmission unit transmits the changed volume value to the amplification device,
In one of the controllers, when an instruction to change the volume value displayed on the display device by the display unit is input by a user operation, the changed volume value is transmitted to the amplification device. ,
In the amplifying apparatus, the volume adjusting unit adjusts the volume value of the amplifying apparatus based on the received volume value, and the first transmitting unit sends a controller other than the controller that has transmitted the volume value to the controller. Send volume value,
In a controller other than the controller that has transmitted the volume value, the change unit changes the volume value that the display unit displays on the display device to the volume value received from the amplification device.   The amplification device in the volume control system according to claim 1 or 2.   The controller program which makes a computer perform each part of the said controller in the volume control system of Claim 1 or 2.

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