JP2007234146A - Audio equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide audio equipment which can remove burdens imposed on a user since volume does not change even when operated by mischief of a child or the like. <P>SOLUTION: When volume adjusting operation is performed by an operation unit 9 and a remote controller, a micrcomputer 8 sends a control signal to a volume controller 6 based on the operation, and the volume controller 6 attenuates the signal level of an input voice signal based on the control signal. When a predetermined operation is performed by the remote controller, the microcomputer 8 sends no control signal to the volume controller 6 even when the volume adjusting operation is performed by the operation unit 9 and the remote controller. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention relates to an audio device.

  Volume adjustment in an audio device is performed by an operation using a remote controller or a knob. While the user is listening to the audio using the audio device, there is a problem that the child or the like operates the remote control or the knob in a mischief and the sound volume is changed, which is troublesome for the user.

Here, for example, Patent Document 1 discloses a television in which if the remote control and the front control panel are pressed simultaneously at a certain volume, the volume cannot be increased beyond that volume even if the volume is adjusted. Yes. According to such a television, even if a child or the like mischievously performs a volume adjustment operation, the volume does not increase too much.
JP-A-6-261266

  However, in the television of the above-mentioned Patent Document 1, when a child or the like performs an operation to decrease the volume by mischief, there is a problem that the volume is decreased and the user's troublesomeness cannot be solved.

  In view of the above problems, an object of the present invention is to provide an audio device in which the volume does not change even if an operation by a mischief such as a child is performed, and the user's troublesomeness is eliminated.

  In order to achieve the above object, an audio device of the present invention adjusts and outputs a control means for outputting a control signal based on an operation in the first operation means, and a signal level of an input audio signal based on the control signal. In the audio device including the adjusting unit, when a predetermined operation is performed on the second operating unit that is the same as or different from the first operating unit, the control unit is operated on the first operating unit. In this case, the control signal is not output.

  According to such a configuration, if a predetermined operation is performed on the second operation means, the sound volume does not change even if a child or the like is mischievous and the first operation means is operated. Is resolved.

  In the audio device according to the present invention, in the state, when the predetermined operation is performed in the second operation unit, the control unit outputs a control signal based on the operation in the first operation unit. It is characterized by becoming.

  According to such a configuration, it is possible to return from the state in which the sound volume does not change even when the operation is performed on the first operation unit as described above to the state in which the sound volume can be adjusted by the operation of the first operation unit. it can.

  According to the audio device of the present invention, the volume does not change even if an operation by a mischief such as a child is performed, and the troublesomeness of the user is eliminated.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a block diagram showing a configuration of a home theater model according to the present invention. The present invention is characterized by the receiver 2 in the home theater model. However, although the receiver 2 has a tuner function, a configuration related to this is omitted. In addition, this invention is applicable not only to the receiver in a home theater model but to all audio equipment.

  The audio output terminal included in the DVD player 1 and the audio input terminal 3 included in the receiver 2 are connected by a cable. The audio input terminal 3 supports 5.1ch multi-channel audio, and is for the left front channel (L in FIG. 1), for the right front channel (R in FIG. 1), for the left rear channel (SL in FIG. 1), Terminals for the right rear channel (SR in FIG. 1), the center channel (C in FIG. 1), and the subwoofer channel (SW in FIG. 1) are provided. Among these, the terminals for the left front channel (L in FIG. 1) and the right front channel (R in FIG. 1) are connected to the equalizer 4, and the equalizer 4 is connected to the audio selector 5. The other terminals for the left rear channel (SL in FIG. 1), the right rear channel (SR in FIG. 1), the center channel (C in FIG. 1), and the subwoofer channel (SW in FIG. 1) are audio selectors. 5 is connected.

  The multi-channel audio signal reproduced by the DVD player 1 is input to the audio input terminal 3, and the sound quality of the left front channel audio signal and the right front channel audio signal among the multi-channel audio signals is adjusted by the equalizer 4, and the audio selector 5 Input to the volume controller 6. Further, among the multi-channel audio signals, the left rear channel audio signal, the right rear channel audio signal, the center channel audio signal, and the subwoofer channel audio signal are input to the volume controller 6 via the audio selector 5. When the audio signal reproduced by the DVD player 1 is a downmix audio signal obtained by downmixing a multichannel audio signal into two channels, the downmix audio signal is for the left front channel of the input terminal 3 (L in FIG. 1). ), Input to each terminal for the right front channel (R in FIG. 1), the sound quality is adjusted by the equalizer 4, and input to the volume controller 6 via the audio selector 5.

  As will be described later, the volume controller 6 attenuates the signal level of the input audio signal with an attenuation factor corresponding to the control signal from the microcomputer 8 and outputs the attenuated signal to the output terminal 7. The output terminal 7 is connected to a speaker 11 with a built-in amplifier by a cable, and an audio signal output from the volume controller 6 to the output terminal 7 is sent to the speaker 11, and multichannel audio or downmix audio is emitted from the speaker 11.

  The operation unit 9 has a volume adjusting knob and the like, and sends an operation signal corresponding to the operation to the microcomputer 8. The remote control receiver 10 receives and demodulates an infrared signal from a remote controller (not shown), and sends a code signal corresponding to the operation to the microcomputer 8.

  The microcomputer 8 receives the operation signal from the operation unit 9 by rotating the volume adjustment knob of the operation unit 9, or presses the volume increase button or the volume decrease button of a remote control (not shown) from the remote control reception unit 10. When the code signal is received, a control signal is sent to the volume controller 6 based on the operation signal or the code signal. Then, the volume controller 6 attenuates the signal level of the audio signal input from the audio selector 5 with an attenuation rate corresponding to the control signal from the microcomputer 8 and outputs the attenuated signal to the speaker 11 via the output terminal 7. Thereby, the volume of the sound emitted from the speaker 11 is adjusted by the operation of the volume adjusting knob and the remote controller.

  Here, when a volume increase button and a volume decrease button of a remote controller (not shown) are pressed at the same time, the remote control receiver 10 sends a code signal corresponding to the operation to the microcomputer 8. When the microcomputer 8 receives the code signal, it recognizes that the child lock mode has been entered. Thereafter, the microcomputer 8 does not send a control signal to the volume controller 6 even if the volume adjusting knob is rotated or the volume increasing button and the volume decreasing button of the remote control are pressed. As a result, even if a child or the like mischiefly operates the volume adjustment knob or the volume increase button and volume decrease button on the remote controller, the volume of the sound emitted from the speaker does not change, and the user is not bothered. .

  Here, when the volume increasing button and the volume decreasing button of the remote control are simultaneously pressed again, the remote control receiving unit 10 sends a code signal corresponding to the operation to the microcomputer 8. When the microcomputer 8 receives the code signal, it recognizes that the child lock mode has been released. Thereafter, the microcomputer 8 receives the operation signal from the operation unit 9 by rotating the volume adjustment knob, or receives the code signal from the remote control reception unit 10 by pressing the volume increase button or the volume decrease button of the remote control. A control signal is sent to the volume controller 6 based on the operation signal or the code signal, and the volume controller 6 attenuates the signal level of the input audio signal with an attenuation rate corresponding to the control signal, and the speaker via the output terminal 7. 11 is output. Thereby, the volume of the sound emitted from the speaker 11 can be adjusted again by the operation using the volume adjusting knob and the remote controller.

These are block diagrams of a home theater model according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 DVD player 2 Receiver 3 Audio input terminal 4 Equalizer 5 Audio selector 6 Volume controller 7 Output terminal 8 Microcomputer 9 Operation part 10 Remote control reception part 11 Speaker

Claims (2)

In an audio apparatus comprising: a control unit that outputs a control signal based on an operation in the first operation unit; and an adjustment unit that adjusts and outputs a signal level of an input audio signal based on the control signal.
When a predetermined operation is performed in a second operation means that is the same as or different from the first operation means, the control means does not output a control signal even if operated in the first operation means,
In this state, when the predetermined operation is performed in the second operation unit, the control unit is in a state of outputting a control signal based on the operation in the first operation unit. machine. In an audio apparatus comprising: a control unit that outputs a control signal based on an operation in the first operation unit; and an adjustment unit that adjusts and outputs a signal level of an input audio signal based on the control signal.
When a predetermined operation is performed on the second operation means that is the same as or different from the first operation means, the control means does not output a control signal even if operated on the first operation means. , Which is characterized by audio equipment.

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