JP2009033616A - Audio playback system, program and notice method of remaining amount of battery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect and notice whether or not a battery is charged or the battery is replaced, when an audio playback system which drives each speaker by the battery is played back. <P>SOLUTION: The audio playback system 100 is configured to have a plurality of speakers which are driven by a power supply to be supplied from the batteries each of which can be charged and/or detached, and to play back an audio from the plurality of speakers based on an audio signal which is inputted and should be played back. Under control of a controller 24, a remaining amount of each battery of the plurality of speakers is detected based on a battery voltage value of each speaker, it is determined whether or not the plurality of speakers are driven, respectively, based on the audio signal which is inputted and should be played back, and concerning the speaker which is not driven based on a determination result concerned, the detected remaining amount of the battery is noticed by a display output from a display 25 or by an audio output from a speaker 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an audio playback device, a program, and a battery remaining amount notification method.

  2. Description of the Related Art Conventionally, there is an audio reproduction device that wirelessly transmits an audio signal output from a sound source device and reproduces it using a plurality of speakers with a built-in amplifier. In this audio reproduction device, it is not necessary to route the wiring to the speaker, and the speaker can be installed freely. The amplifier built in each speaker is driven using a battery as a power source.

For example, Patent Document 1 discloses a technique for displaying a message that prompts battery replacement, charging, or the like, with respect to a sound reproducing device having a plurality of speakers driven by a battery.
Japanese Patent Laid-Open No. 2005-210504

  However, the above-described conventional technique is inconvenient because it is necessary to interrupt the sound reproduction in order to charge or replace the battery with a low remaining battery level.

  An object of the present invention has been made in view of the above-described problems of the prior art, and is used to detect and notify whether or not a battery needs to be charged or replaced at the time of playback of an audio playback device that is driven by a battery of each speaker. Is to provide technology.

In order to solve the above-mentioned problem, the invention described in claim 1 has a plurality of speakers driven by a power source supplied from a battery, and a sound is output from the plurality of speakers based on an input audio signal to be reproduced. An audio playback device that performs playback,
Detecting means for detecting a remaining battery level of each of the plurality of speakers;
Discrimination means for discriminating the driving state of each of the plurality of speakers based on the input audio signal to be reproduced;
Notification means for notifying the remaining battery level by the detection means for a speaker in a non-driven state based on the determination result by the determination means;
Is provided.

The invention according to claim 2 further comprises identification means for identifying a signal type of the input audio signal to be reproduced in the invention according to claim 1,
The discriminating unit discriminates when switching the signal type based on the discriminating unit.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the determining means determines when the power supply of the own apparatus is turned on.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects of the present invention, the notification means includes a remaining battery level by the detection means for all the speakers when the power of the apparatus is turned off. Announce.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects of the present invention, the notification means is configured such that a battery remaining amount by the detection means is preset for the speaker in the non-driven state. If it falls below the threshold value, a notice is given to prompt charging and / or replacement.

Invention of Claim 6 is provided with a display means in the invention as described in any one of Claims 1-5,
The notification means outputs a display to the display means.

  The invention according to claim 7 is the invention according to any one of claims 1 to 5, wherein the notification means outputs sound from any of the speakers.

The invention according to claim 8 is provided with a plurality of speakers, each of which is driven by a power source supplied from a battery and has a detecting means for detecting the remaining battery level, and is based on an input audio signal to be reproduced. To a computer of a sound reproduction device that reproduces sound from a plurality of speakers,
Determining means for determining the driving state of each of the plurality of speakers based on the input audio signal to be reproduced;
Notification means for notifying the remaining battery level by the detection means for a speaker in a non-driven state based on the determination result by the determination means,
It is a program to make it function as.

The invention according to claim 9 has a plurality of speakers each driven by a power source supplied from a battery, and reproduces sound from the plurality of speakers based on an inputted audio signal to be reproduced. The method for notifying the remaining battery power of
Based on the input audio signal to be reproduced, the driving state of each of the plurality of speakers is determined, and based on the determination result, the remaining battery level of the speaker in the non-driving state is detected and notified.

  According to the present invention, it is possible to detect and notify whether or not battery charging or battery replacement is necessary during playback of a sound playback device in which each speaker is battery-driven.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments. Further, the embodiment of the present invention shows the most preferable mode of the invention, and does not limit the scope of the invention.

  The audio reproduction apparatus according to the present embodiment will be described with reference to FIGS.

  First, the configuration of the audio playback device will be described. As shown in FIG. 1, the sound reproducing device 100 has a configuration including a sound source device 1, a transmitter 2, and a speaker unit 3. The sound source device 1 uses an audio signal read from a storage medium such as a CD, a DVD (Digital Versatile Disk), or an MD (MiniDisc), an audio signal received from a wired or wireless transmission signal, and the like as a SPDIF (Sony Philips Digital InterFace) And output to the transmitter 2 as a digital audio signal via a communication interface.

  The transmitter 2 includes a decoder 21, a modulation / demodulation circuit 22, a transmission / reception circuit 23, a control unit 24, a display unit 25, a storage unit 26, an antenna 27, and the like.

  The decoder 21 is a decoder that supports multi-channel decoding by a DSP (Digital Signal Processor) or the like, identifies a digital audio signal input from the sound source device 1, and decodes the multi-channel according to the digital audio signal. Specifically, 2-channel audio signals that are played back at the front (right) and front (left), and surround signals that are played at the front (right), front (left), center, rear (right), and rear (left). Further, the signal is decoded into a signal of each channel according to a 5.1 channel surround signal including reproduction by a subwoofer.

  The modulation / demodulation circuit 22 modulates each of the multi-channel decoded audio signals to transmit to the speaker corresponding to each channel via the transmission / reception circuit 23. The modem circuit 22 demodulates the transmission signal from each speaker received by the transmission / reception circuit 23.

  The transmission / reception circuit 23 performs wireless communication with the speaker unit 3 via the antenna 27 under the control of the control unit 24. Specifically, the transmission / reception circuit 23 transmits the audio signal of each speaker modulated by the modulation / demodulation circuit 22 to each speaker. The transmission / reception circuit 23 transmits a control signal output from the control unit 24 to each speaker, and receives a transmission signal from each speaker.

  The control unit 24 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like (all not shown). The control unit 24 performs overall control of the operation of the transmitter 2 by sequentially executing processes based on various control programs and setting data stored in advance in the ROM and the storage unit 26 using the predetermined area of the RAM as a work area. To do.

  The display unit 25 includes a display screen such as an LCD (Liquid Crystal Display), and displays various information and operation screens on the display screen based on a control signal output from the control unit 24.

  The storage unit 26 is a semiconductor memory or the like, and stores program data and various setting data. The various setting data stored in the storage unit 26 includes signal type correspondence information indicating a speaker that operates in response to an audio signal input from the sound source device 1.

  As shown in FIG. 2, the signal type correspondence information D1 is table data indicating an operating speaker for each audio signal type. The control unit 24 can determine the speaker that operates in response to the audio signal input from the sound source device 1 by referring to the signal type correspondence information D1. Specifically, the front (left) speaker and the front (right) speaker operate in the case of the digital 2-channel signal L1 and the digital 2-channel signal L2, and the front (left) speaker, the center speaker, and the front in the case of the surround signal L3. The (right) speaker, rear (left) speaker, and rear (right) speaker operate. In the case of the surround 5.1 channel signal L4 and the surround 5.1 channel signal L5, the front (left) speaker, the center speaker, and the front (right) ) It can be seen that the speaker, the rear (left) speaker, the rear (right) speaker, and the subwoofer operate.

  The speaker unit 3 includes a plurality of speakers such as a front (left) speaker 3a, a center speaker 3b, a front (right) speaker 3c, a rear (left) speaker 3d, a rear (right) speaker 3e, and a subwoofer 3f. The transmitter 2 and the above-described speakers are connected so as to be communicable with each other by wireless communication. The speaker unit 3 can perform multi-channel audio reproduction by performing audio reproduction based on the audio signal transmitted wirelessly from the transmitter 2 in each speaker described above.

  The functional configuration of each speaker (3a to 3f) of the speaker unit 3 is as shown in FIG. Since the functional configuration of each speaker is substantially the same, the following description will be made using the front (left) speaker 3a, and description of other speakers will be omitted. As shown in FIG. 3, the front (left) speaker 3 a includes a control unit 31, a battery power supply unit 32, a battery voltage detection unit 33, a transmission / reception circuit 34, an antenna 35, and an audio reproduction unit 36.

  The control unit 31 is a control IC (Integrated Circuit) or the like, and comprehensively controls the operation of the front (left) speaker 3a. The battery power supply unit 32 includes a battery 32a that is a primary battery or a secondary battery (both not shown) that are detachably provided by a holder or the like, and a power supply circuit 32b that supplies power supplied from the battery 32a to each unit. Have. That is, the front (left) speaker 3a is configured to be driven by electric power supplied from the battery 32a.

  The battery voltage detection unit 33 detects the voltage of the battery 32 a under the control of the control unit 31, and outputs the detected voltage value to the control unit 31. The transmission / reception circuit 34 performs wireless communication with the transmitter 2 via the antenna 35 under the control of the control unit 31. Specifically, the transmission / reception circuit 34 receives the audio signal of each speaker transmitted from the transmitter 2 described above. The transmission / reception circuit 34 receives a control signal transmitted from the transmitter 2 to each speaker, and transmits a signal output from the control unit 31 to the transmitter 2.

  The audio reproduction unit 36 includes an amplifier 36a that amplifies the audio signal received by the transmission / reception circuit 34, a permanent magnet, a voice coil, a diaphragm to which the voice coil is connected, and the like (none of which is particularly illustrated). And having. The audio reproduction unit 36 amplifies the audio signal received by the transmission / reception circuit 34 using the power supplied from the battery 32a and reproduces the audio.

  Next, an operation process executed by the control unit 24 when the sound reproduction apparatus 100 is powered on will be described. As shown in FIG. 4, when the power is turned on by pressing a power switch (not shown) or the like (step S11), the battery voltage value of each speaker is acquired by the transmission / reception circuit 23 and compared with a predetermined voltage value. Thus, the process of recognizing the remaining battery level is performed for all the speakers (step S12).

  The recognition of the remaining battery level in step S12 is to recognize whether or not there is a predetermined remaining battery level by determining whether or not the voltage value of each speaker is below a predetermined threshold (voltage value). It is. For example, by setting a voltage value slightly higher than the end-of-discharge voltage value of the battery as the predetermined threshold value, it can be recognized that the remaining battery level is only usable for a while. A secondary battery such as a lithium-in rechargeable battery has a full charge of 4.2 (V) and a discharge end voltage value of about 2.8 (V), so about 3.2 to 3.5 (V) is predetermined. By setting this threshold value, it is possible to recognize the remaining battery level that can be used for a while but is at the charging time.

  Following step S12, the type of the audio signal input from the sound source device 1 is identified by the decoder 21 and waits until the type determination of the input signal is completed (step S13). Based on the signal type determined. The presence / absence of a speaker that is not used is determined by referring to the signal type correspondence information D1 (step S14).

  If there is a speaker that is not used in step S14 (YES), it is determined whether or not there is a speaker whose battery voltage value is below a predetermined threshold among the speakers that are not used (step S15). The display 25 prompts the speaker to charge the battery or replace the battery (step S16).

  Next, an operation process executed by the control unit 24 during audio reproduction of the audio reproduction device 100 will be described. As shown in FIG. 5, when the process is started during audio reproduction, the latest battery voltage value of each speaker is obtained by the transmission / reception circuit 23 and compared with a predetermined voltage value, whereby the latest battery remaining of each speaker is obtained. The amount is recognized (step S21), the type of the audio signal input from the sound source device 1 is identified by the decoder 21, and the process waits until the type of the input signal is changed (step S22).

  In step S22, when the type of the input signal is changed (YES), that is, when the input signal is switched, the signal type correspondence information D1 is referred to based on the signal type after switching, so that It is determined whether or not there is a speaker that is not used after switching (step S23).

  If there is a speaker that is not used in step S23 (YES), it is determined whether or not there is a speaker whose battery voltage value is below a predetermined threshold among the speakers that are not used (step S24). A display for prompting battery charging or battery replacement of the speaker is performed on the display unit 25 (step S25).

  Next, an operation process executed by the control unit 24 when the sound reproduction apparatus 100 is powered off will be described. As shown in FIG. 6, when the power is turned off by pressing the power switch or the like (step S31: YES), the latest battery voltage value of each speaker is acquired and compared with a predetermined voltage value. Is confirmed (step S32), and it is determined whether or not there is a speaker whose battery voltage value is below a predetermined threshold among all the speakers (step S33).

  In step S33, when there is a speaker whose battery voltage value is lower than the predetermined threshold (YES), a display for prompting battery charging or battery replacement of the speaker determined to be lower is displayed on the display unit 25. (Step S34) Waits until a predetermined time elapses or until a user performs a recognition operation via a confirmation key or the like (not shown) (step S35).

  Next, other power-off processing such as output of a power-off instruction to each speaker by the transmission / reception circuit 23 and stop processing of each section such as the decoder 21, the modulation / demodulation circuit 22, and the transmission / reception circuit 23 is performed (step S36), and the process ends. To do.

  Note that the above-described operation process executed by the control unit 24 when the sound reproduction device 100 is turned on, operation process executed by the control unit 24 during sound reproduction of the sound reproduction device 100, and control unit 24 when the sound reproduction device 100 is turned off. The display from the display unit 25 in the operation process etc. executed by is not only the display related to the speaker whose battery voltage value is lower than the predetermined threshold among the speakers that are not used, but also displays the remaining battery level of all the speakers that are not used. May be. In this case, it is possible to perform battery charging or battery replacement of speakers that are not used at the user's discretion.

  Further, the display from the display unit 25 described above may be an audio output from any speaker of the speaker unit 3. Specifically, based on audio data stored in advance in the storage unit 26, audio output that prompts battery charging or battery replacement of the speaker is performed. In this case, the timing of battery charging or battery replacement of a speaker that is not used can be confirmed from voice.

  As described above, the audio reproduction device 100 includes a plurality of speakers each driven by a power source supplied from a battery that can be charged and / or detached, and the plurality of speakers are input based on the input audio signals to be reproduced. The audio reproduction is performed from the speaker, and the remaining battery level of each of the plurality of speakers is detected based on the voltage value from the battery voltage detection unit 33 under the control of the control unit 24, and the input reproduction is performed. The presence / absence of driving of each of the plurality of speakers is determined by referring to the signal type correspondence information D1 based on the audio signal to be displayed, and the detected remaining battery level is displayed for the speaker not driven based on the determination result The display output from 25 or the voice output from the speaker unit 3 is notified. For this reason, the audio playback device 100 can check the remaining battery level of the speaker that is not driven, and appropriately charge or replace the battery without stopping the audio playback when the remaining battery level of the speaker that is not driven is low. It can be carried out.

  In addition, the sound reproduction device 100 notifies the display (display) that prompts charging and / or replacement when the remaining battery level (battery voltage value) is below a preset threshold value for a speaker that is not driven under the control of the control unit 24. Display output from the unit 25 / audio output from the speaker unit 3). For this reason, when the remaining battery level of the speaker that is not driven decreases, the audio reproducing device 100 can prompt the battery to be charged and / or replaced with a battery, and can appropriately replace the battery.

  In addition, the audio playback device 100 controls the signal type (digital 2-channel signal L1, digital 2-channel signal L2, surround signal L3, surround 5) of the audio signal to be played input from the sound source device 1 under the control of the control unit 24. .1 channel signal L4, surround 5.1 channel signal L5, etc.), the presence / absence of driving of each of the plurality of speakers is determined at the time of switching the signal type, and the non-driven speaker is detected based on the determination result. The remaining battery level is notified by display output from the display unit 25 or voice output from the speaker unit 3. Therefore, when the signal type is switched, the audio reproduction device 100 can check the remaining battery level of the speaker that is not driven by the audio signal after the switching.

  In addition, the sound reproducing device 100 determines whether or not each of the plurality of speakers is driven when the power of the device itself is turned on, and displays the detected battery remaining amount from the display unit 25 for the speaker that is not driven based on the determination result. Announcement is made by outputting or outputting sound from the speaker unit 3. Therefore, the audio reproduction device 100 can check the remaining battery level of the speaker that is not driven by the audio signal input from the sound source device 1 when the power is turned on.

  In addition, the sound reproducing device 100 notifies the remaining battery power of all the speakers by displaying output from the display unit 25 or outputting sound from the speaker unit 3 when the power of the own device is turned off. For this reason, the audio reproduction device 100 can check the remaining battery levels of all speakers when the power is turned off.

  Note that the description in the above-described embodiment shows an example, and the present invention is not limited to this. The configuration and operation in the embodiment described above can be changed as appropriate.

  For example, in the operation process executed by the control unit 24 when the power of the audio playback device 100 is turned off, the display prompting the speaker to charge the battery or replace the battery in step S34 may be displayed only during standby in step S35. It may also be displayed after the power is turned off (standby power is on).

It is a conceptual diagram which shows the functional structure of the audio | voice reproduction apparatus which concerns on this Embodiment. It is a conceptual diagram which shows the content of signal classification corresponding | compatible information. It is a block diagram which shows the functional structure of each speaker. It is a flowchart which shows operation | movement of the audio | voice reproduction apparatus at the time of power-on. It is a flowchart which shows operation | movement of the audio | voice reproduction apparatus when an input audio | voice signal changes. It is a flowchart which shows operation | movement of the audio | voice reproduction apparatus at the time of power-off.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Audio | voice reproduction apparatus 1 Sound source device 2 Transmitter 3 Speaker part 3a Front (left) speaker 3b Center speaker 3c Front (right) speaker 3d Rear (left) speaker 3e Rear (right) speaker 3f Subwoofer 21 Decoder 22 Modulation / demodulation circuit 23 Transmission / reception circuit 24 control unit 25 display unit 26 storage unit 27 antenna 31 control unit 32 battery power supply unit 33 battery voltage detection unit 34 transmission / reception circuit 35 antenna 36 audio reproduction unit D1 signal type correspondence information L1 digital 2 channel signal L2 digital 2 channel signal L3 surround signal L4 surround 5.1 channel signal L5 surround 5.1 channel signal

Claims (9)

An audio reproduction device having a plurality of speakers driven by a power source supplied from a battery and performing audio reproduction from the plurality of speakers based on an input audio signal to be reproduced,
Detecting means for detecting a remaining battery level of each of the plurality of speakers;
Discrimination means for discriminating the driving state of each of the plurality of speakers based on the input audio signal to be reproduced;
Notification means for notifying the remaining battery level by the detection means for a speaker in a non-driven state based on the determination result by the determination means;
An audio playback device comprising: An identification means for identifying a signal type of the input audio signal to be reproduced;
The sound reproducing apparatus according to claim 1, wherein the determining unit determines when the signal type is switched based on the identifying unit.   The sound reproducing apparatus according to claim 1, wherein the determining unit determines when the power of the own apparatus is turned on.   The sound reproduction device according to any one of claims 1 to 3, wherein the notification unit notifies the remaining battery level of the detection unit for all the speakers when the power of the device is turned off.   5. The notification unit according to claim 1, wherein the notification unit is configured to notify the charging and / or replacement of the speaker in the non-driven state when the remaining battery level of the detection unit is lower than a preset threshold value. The audio reproduction device according to one item. A display means,
The sound reproducing apparatus according to claim 1, wherein the notification unit outputs a display to the display unit.   The sound reproduction apparatus according to claim 1, wherein the notification unit outputs sound from any of the speakers. Audio that is driven by a power source supplied from a battery and has a plurality of speakers having detection means for detecting the remaining battery level, and that reproduces sound from the plurality of speakers based on an input audio signal to be reproduced In the computer of the playback device,
Determining means for determining the driving state of each of the plurality of speakers based on the input audio signal to be reproduced;
Notification means for notifying the remaining battery level by the detection means for a speaker in a non-driven state based on the determination result by the determination means,
Program to function as. This is a method for notifying the remaining battery level of a sound reproducing apparatus that has a plurality of speakers each driven by a power source supplied from a battery and performs sound reproduction from the plurality of speakers based on an input sound signal to be reproduced. And
The remaining battery level is determined by determining the driving state of each of the plurality of speakers based on the input audio signal to be reproduced, and detecting and notifying the remaining battery level of the speaker in the non-driven state based on the determination result Notification method.

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