Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JP2008172551 PROBLEM TO BE SOLVED: To provide a system capable of efficiently switching between a speaker output state and a headphone output state without requiring complicated operations in an AV system and a speaker system for reproducing three-dimensional sound. SOLUTION: The AV system comprises an AV apparatus 10 having a wireless transmission function of voice, a rear speaker apparatus 30, and a wireless receiver 20 capable of outputting voice from headphones by wireless reception. The rear speaker device 30 receives an audio signal based on wireless reception from the wireless receiver 20 when the device mounting unit 31 to which the wireless receiver 20 can be mounted and the wireless receiver 20 is mounted to the device mounting unit 31. And a speaker output configuration. Furthermore, the AV apparatus 10 is configured to identify whether the wireless receiver 20 is attached to the device attachment unit 31 and to change the operation mode related to audio processing according to this state. [Selected figure] Figure 1 AVシステムおよびスピーカシステム [0001] The present invention relates to an AV system comprising an AV (audio visual) device for outputting video and audio, a speaker device such as a rear speaker, and a wireless receiver capable of outputting a headphone by wireless reception, and the above speaker device And a speaker system with a wireless receiver. [0002] 10-05-2019 1 BACKGROUND In recent years, audio systems that perform stereophonic sound reproduction using multichannel audio signals are well known. For example, three speakers are arranged at the front center and the front left and right, two speakers are arranged at the rear left and right, and audio output of different channels is performed by each speaker, thereby realizing reproduction of stereoscopic sound. [0003] In addition, wireless headphone systems have also been developed that wirelessly transmit analog audio signals and digital audio data via infrared or wireless, enabling audio output from headphones without the need for an audio cable. . [0004] Further, as prior art related to the present invention, there has been disclosed the following technology. For example, Patent Document 1 discloses an audio reproduction system that stops wireless transmission of an audio signal when a plug is inserted into a headphone jack, or stops output of a front speaker when using a wireless headphone. [0005] Further, Patent Document 2 discloses a surround system that switches between speaker output and wireless transmission of an audio signal by selecting an operation mode. Further, Patent Document 3 discloses a technology for preventing interference and malfunction by changing a modulation method between headphone and speaker by wireless transmission of an audio signal. JP 2005-124106 JP 05-122789 JP 05-002500 JP [0006] Even in the case of an audio system that reproduces a three-dimensional sound using three or more speakers, for example, in the middle of the night, the output from the speakers may be stopped to listen to voice or music using headphones. 10-05-2019 2 [0007] However, in the above audio system, when switching from the speaker output state of stereophonic sound to the headphone output state, the channel type of the audio output is changed, the output mode is changed, or the output from the rear speaker It is necessary to perform complicated operations such as stopping the [0008] In addition, the rear speakers and headphones may be configured to transmit audio wirelessly or by infrared rays, since they are used at places remote from the playback device. However, in such a case, providing the wireless reception function for both the rear speaker and the headphone results in providing the two wireless reception functions even though the rear speaker and the headphone are not used simultaneously. It was thought that waste had occurred. [0009] SUMMARY OF THE INVENTION An object of the present invention is to provide an AV system and a speaker system for reproducing three-dimensional sound, which can efficiently switch the state of the speaker output and the state of the headphone output without wasteful operation. To provide. Another object of the present invention is to reduce cost by eliminating unnecessary transmitting and receiving circuits for wirelessly transmitting sound to a speaker device and headphones. [0010] In order to achieve the above object, the present invention provides an AV apparatus provided with a wireless transmission function of audio signal or audio data, a speaker apparatus configured separately from the AV apparatus, and an audio signal or audio from the AV apparatus. A wireless receiver capable of wirelessly receiving data and outputting sound from headphones, the speaker device including an apparatus mounting unit to which the wireless 10-05-2019 3 receiver can be mounted, the wireless receiver being mounted to the apparatus mounting unit Is configured to input an audio signal based on wireless reception from the wireless receiver and output it as a speaker, and the AV apparatus determines whether the wireless receiver is attached to the device attachment unit. According to this state, the operation mode related to the voice processing is changed. [0011] Here, as the AV apparatus, for example, various apparatuses that perform audio output and video output such as a digital television receiver and an optical disk reproduction apparatus can be applied. The wireless receiver may be, for example, an apparatus integrated with a headphone, or an apparatus having a headphone connection terminal and outputting an audio signal from the terminal to the headphone. [0012] According to such means, the operation mode of the audio output is automatically changed only by attaching and detaching the wireless receiver to and from the device mounting portion of the speaker apparatus, so that the user does not have to operate the headphone. It is possible to obtain an aspect of audio output that matches the use time and the speaker output time. Also, since the audio output to the speaker device is wirelessly received by the wireless receiver, the speaker device can also be made wireless, and the wireless reception circuit is common to the headphone and the speaker, so that the cost Can be reduced. In addition, there is no inconvenience that interference occurs between the headphone wireless signal and the speaker wireless signal. [0013] Preferably, the AV apparatus is capable of multi-channel audio signal processing, and is configured to change a channel type of audio to be transmitted wirelessly depending on whether or not the wireless receiver is attached. [0014] 10-05-2019 4 Preferably, the AV apparatus wirelessly transmits an audio signal or audio data of a channel other than the front output when determining that the wireless receiver is attached, and determines that the wireless receiver is not attached. In some cases, it may be configured to wirelessly transmit audio signals or audio data for headphone output. [0015] More preferably, the AV apparatus outputs audio from its own speaker when it is determined that the wireless receiver is attached, and when it is determined that the wireless receiver is not attached. It may be configured to stop voice output. With such a configuration, it is possible to automatically switch between the preferred states when enjoying three-dimensional sound with the speaker output and when stopping the speaker output and enjoying audio reproduction only from the headphones. [0016] Preferably, the wireless receiver is provided with a first communication unit capable of wireless communication, a connection detection unit for detecting whether or not the device is attached to the device attachment unit, and whether the device is attached to the device attachment unit A first control unit for transmitting status information indicating whether or not to be transmitted via the first communication unit, and the AV apparatus includes a second communication unit capable of wireless communication, and the second communication unit Preferably, second control means is provided for changing the operation mode related to the audio processing based on the status information received. With such a configuration, the mounting state of the wireless receiver can be reliably transmitted to the AV apparatus side. [0017] More preferably, the wireless receiver includes a secondary battery for supplying an operating voltage of an internal circuit, and the speaker device includes a charging circuit for charging the secondary battery and the device mounting unit. The wireless receiver may be provided with a charging output terminal capable of outputting a charging voltage. 10-05-2019 5 [0018] According to such a configuration, the wireless receiver can be charged when switching to the speaker output and not using headphones, which is very convenient. In addition, since the circuit for supplying the charging power of the wireless receiver can also be used as the configuration of the speaker device (for example, the power supply circuit on the primary side can be used), the cost can be reduced. [0019] Further, in order to achieve the above object, according to the speaker system of the present invention, a speaker device for outputting audio of any one of multi-channel audio signals and wirelessly receiving audio signals or audio data of a predetermined format for headphone A wireless receiver capable of outputting audio from the speaker device, and the speaker device receives an audio signal or audio data from a device mounting unit to which the wireless receiver can be mounted and the wireless receiver mounted on the device mounting unit An audio input terminal, and a speaker unit that outputs an audio based on an audio signal or audio data input from the audio input terminal, and the wireless receiver is configured to receive the audio input terminal when mounted on the device mounting unit. Audio output terminal connectable to the device, communication means capable of wireless communication, and whether or not the device is attached A connection detection means for detecting that was configured to status information indicating whether it is attached to the device mounting portion and a control means for transmitting through said communication means. According to such a speaker system, various effects and effects as described above can be obtained by using the above-described AV device in combination. [0020] As described above, according to the present invention, in the AV system and the speaker system capable of reproducing three-dimensional sound, the state of the speaker output and the state of the headphone output do not require complicated operations and are streamlined efficiently. It has the effect of being able to switch. 10-05-2019 6 [0021] In addition, wireless transmission of sound to the speaker device and the headphones has an effect that cost reduction can be achieved by sharing the reception circuits of the both. [0022] Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a diagram showing an entire configuration of an AV system according to this embodiment, and FIG. 2 is a block diagram showing a circuit configuration of each component device. [0023] In the AV system of this embodiment, for example, a display apparatus (AV apparatus) 10 with a disc reproduction function and reproducing an image and audio output by reproducing an optical disk storing video data and multi-channel stereo audio data is stored. A wireless receiver 20 capable of outputting sound to the headphone 25 by wireless reception, and a rear speaker device 30 disposed at the opposite side of the display device 10 and performing sound output of multi-channel rear left and right channels, for example It is. [0024] As shown in FIG. 2, the display device 10 combines a disc reproducing unit 101 for reproducing an optical disc, composites the reproduced video data and audio data, and encodes audio data and audio signals for wireless transmission. The signal processing circuit 102, the display unit 11 for outputting reproduced video, the amplifier 103 for amplifying the reproduced audio signal to a set volume, and the speaker 12 for audio output, for example, transmits and receives digital signals wirelessly A wireless transmission / reception circuit 105 and a controller 104 as a second control means for controlling each part are provided. [0025] For example, when the multi-channel audio is reproduced, the above-mentioned speaker 12 is for performing audio output of the front left and right channels. [0026] 10-05-2019 7 The controller 104 can change the channel of an audio signal for wireless transmission by outputting a command to the signal processing circuit 102. In addition, it is possible to control the amplifier 103 to mute the output from the speaker 12 or to cancel the mute. [0027] The wireless receiver 20 includes, for example, a wireless transmission and reception circuit 201 that transmits and receives digital signals wirelessly, a signal processing circuit 202 that demodulates received audio data and performs D / A conversion, an amplifier 203 for headphone output, and a headphone plug The connection state of the bedphone connection terminal 204 to which the speaker is connected, the output circuit 205 for outputting a rear speaker audio signal, the audio output terminal 207 for outputting a rear speaker audio signal, and the audio output terminal 207 A connection detection circuit 206 for detecting, a controller 209 as a first control means for controlling each part, a battery (secondary battery) 212 for supplying a power supply voltage to each part, and a charge for inputting a charging voltage to the battery 212 It has an input terminal etc. [0028] The above-mentioned headphone connection terminal 204 is, for example, a general headphone jack, and is formed on the top surface or the side surface of the housing of the wireless receiver 20. On the other hand, the voice output terminal 207 and the charging input terminal 211 mentioned above contact the terminals of the rear speaker device 30 when the wireless receiver 20 is attached to the rear speaker device 30, for example, the bottom of the housing etc. Is formed. [0029] The controller 209 can extract voice data from the wirelessly received data and send it to the signal processing circuit 202, and can control the operation of the amplifier 203 and the output circuit 205 on / off. 10-05-2019 8 [0030] The connection detection circuit 206 monitors, for example, the impedance of the audio output terminal 207 to detect whether or not it is in a connected state. [0031] As shown in FIG. 1, the rear speaker device 30 is provided with a mounting portion 31 for mounting the wireless receiver 20 in its housing. The mounting unit 31 is, for example, a hole type into which the lower half of the wireless receiver 20 can be inserted, but various other methods may be adopted as the device mounting unit. For example, the housing of the rear speaker device 30 may be provided with an opening / closing panel and an accommodation space inside thereof, and the whole wireless receiver 20 may be accommodated in the accommodation space. [0032] As shown in FIG. 2, the rear speaker device 30 receives an audio input terminal 301 and a charging output terminal 312 disposed in the mounting unit 31, and an input circuit 302 for inputting an audio signal from the audio input terminal 301. For example, an amplifier 303 for amplifying an audio signal, a speaker 32 for performing audio output by the audio signal, a connection detection circuit 304 for monitoring an impedance and detecting a connection state of an audio input terminal, an input circuit 302 and an amplifier 303 For example, a power supply control circuit 305 that controls on / off of a power supply input, a power supply circuit 310 that generates an operating voltage used by each unit by inputting an AC power supply, and charging of a battery connected to the charging output terminal 312 The charging circuit 311 is provided. [0033] Next, the operation of the AV system with the above configuration will be described with reference to the flowcharts of FIGS. 10-05-2019 9 [0034] Between the display device 10 and the wireless receiver 20, request and response of status information indicating whether the wireless receiver 20 is attached to the rear speaker device 30 are performed in short cycles. [0035] FIG. 3 is a flowchart illustrating processing related to transmission and reception of status information performed by the display device 10 and the wireless receiver 20. The status confirmation process of FIG. 3A is a process executed by the controller 104 of the display device 10 every short cycle (for example, several seconds to several seconds). In addition, even during transmission of audio data by radio, this process is performed by including transmission / reception data during transmission of the audio data, so that the processing is always executed every predetermined cycle. ing. [0036] When a predetermined cycle has elapsed, the controller 104 of the display device 10 shifts the control processing to this status confirmation processing. Then, first, in step S1, the wireless transmission / reception circuit 201 is made to transmit a status request signal for requesting the wireless receiver 20 for status information. Next, in step S2, the transmission signal from the wireless receiver 20 is received by the wireless transmission / reception circuit 201, and processing for extracting status information therefrom is performed. [0037] 10-05-2019 10 When the status information is received, the status confirmation process is ended, and the process returns to the original control process. After that, when the next predetermined cycle has passed again, the status confirmation process is repeatedly executed such that the process shifts to the status confirmation process and the process is executed. [0038] The status response process of FIG. 3B is executed each time reception of a status request signal is confirmed by the controller 209 of the wireless receiver 20. This process is executed every time a status request is made by performing transmission / reception while including voice data while receiving voice data, even while voice data is being wirelessly transmitted. It is supposed to be. [0039] When the wireless receiver 20 receives a status request signal and shifts to this response processing, first, in step S11, processing for confirming the connection state of the audio output terminal 207 is performed. The connection state of the audio output terminal 207 can be confirmed, for example, by examining a predetermined flag stored in a status register in the controller 209. In such a configuration, for example, when the connection detection circuit 206 detects a change in connection state, a signal is sent to the controller 209 to store status information of connection or disconnection in the status register in the controller 209. To be realized. [0040] Subsequently, in the branch process of step S12, if the confirmation result of the connection state indicates that the audio output terminal 207 is connected, the process proceeds to step S13 to generate status information of the rear speaker connection mode, and when not connected, step S14. Go to to generate status information for the headphone connection mode. 10-05-2019 11 [0041] After the status information is generated, the process proceeds to the subsequent step S15, the wireless transmission / reception circuit 201 transmits the status information to the display device 10, and the status response process is ended. Then, while returning to the original control processing, next, when a status request signal is received, this status response processing is repeatedly executed so that this processing is executed again. [0042] By the control process as described above, the display device 10 can always identify whether the wireless receiver 20 is attached to the attachment unit 31 of the rear speaker device 30 or not attached. [0043] FIG. 4 shows a flowchart for explaining the processing contents to be changed in each of the display device 10, the wireless receiver 20, and the rear speaker device 30 when the connection state of the wireless receiver is changed. The flowchart of FIG. 4 is for the case where the wireless receiver is attached to the rear speaker device. Note that FIG. 4 and the flowchart of FIG. 5 described later merely list the processing performed by each device, and each processing is not performed in the order of steps. [0044] When the wireless receiver 20 is attached to the attachment unit 31 of the rear speaker device 30, first, the controller 209 of the wireless receiver 20 recognizes that the attachment unit 31 is attached based on the signal from the connection detection circuit 206. Do. [0045] 10-05-2019 12 Then, based on the above recognition, the controller 209 of the wireless receiver 20 performs some processing shown in step J1 of FIG. That is, the headphone amplifier 203 is turned off to stop the output of the headphone connection terminal 204, and at the same time, the output circuit 205 is turned on from the off state to output an audio signal from the audio output terminal 207. . [0046] Further, in the rear speaker device 30, when the wireless receiver 20 is attached, the connection detection circuit 304 detects this and outputs a detection signal to the power control circuit 305. Then, based on this detection signal, the power control circuit 305 turns on the main power as shown in step J2. As a result, the operating voltage is supplied to the input circuit 302 and the amplifier 303, and an audio signal based on the reception of the wireless receiver 20 is input from the audio input terminal 301 and output from the speaker 32. [0047] Also, in parallel with this, the charging input terminal 211 of the wireless receiver 20 and the charging output terminal 312 of the mounting unit 31 are connected, and a charging voltage is supplied from the charging circuit 311 to the battery 212, and the wireless receiver Charging of 20 is started. [0048] Further, as shown in FIG. 3, since the controller 104 of the display device 10 can identify whether the wireless receiver 20 is attached to the rear speaker device 30 by transmitting and receiving wireless data, step J3 based on this identification. Do some processing of That is, first, the setting of the amplifier 103 is changed from the mute state to the normal state, and the audio output from the speaker 12 of the display device 10 is resumed. In addition, the audio data being wirelessly transmitted is changed to one for rear speakers (for example, rear (left / right) audio data of multi-channel audio). 10-05-2019 13 [0049] By these processes, the speaker device 10 of the display device 10 outputs front (left / right) audio of multi-channel audio, and the rear speaker device 30 performs multi-channel audio rear (left / right) by wireless transmission. Audio output is performed, and stereophonic speaker output is realized. [0050] FIG. 5 is a flowchart illustrating the process contents to be changed in the display device 10, the wireless receiver 20, and the rear speaker device 30 when the wireless receiver is removed from the rear speaker device. [0051] On the other hand, when the wireless receiver 20 is removed from the mounting unit 31 of the rear speaker device 30, first, the controller 209 of the wireless receiver 20 is removed from the mounting unit 31 based on the signal from the connection detection circuit 206. recognize. [0052] Then, based on this recognition, the controller 209 of the wireless receiver 20 performs some processing shown in step J4 of FIG. That is, the headphone amplifier 203 is switched from the off state to the on state to resume the output of the headphone connection terminal 204. At the same time, the output circuit 205 is switched from the on state to the off state to stop the output of the audio signal from the audio output terminal 207. This enables the user to connect the headphones 25 to the wireless receiver 20 and listen to the audio from the headphones. [0053] 10-05-2019 14 Further, in the rear speaker device 30, when the wireless receiver 20 is unmounted, the connection detection circuit 304 detects this and outputs a detection signal to the power control circuit 305. Then, based on the detection signal, the power control circuit 305 turns off the main power as shown in step J5. As a result, the operating voltage supplied to the input circuit 302 and the amplifier 303 is stopped. Although the output from the speaker 32 is stopped when the wireless receiver 20 is disconnected and the input of the audio signal is stopped, the abovementioned operating voltage is stopped, so that the small noise output from the speaker 32 is also perfect. And wasteful power consumption. [0054] Further, since the controller 104 of the display device 10 identifies that the wireless receiver 20 has been removed from the rear speaker device 30 by transmitting and receiving wireless data, some processing of step J6 is performed based on this identification. That is, first, the setting of the amplifier 103 is muted, and the audio output from the speaker 12 of the display device 10 is stopped. In addition, audio data being transmitted wirelessly from that for the rear speaker to that for headphone output (for example, audio data for the front (left / right) of multichannel audio and audio for each channel of multichannel audio are mixed Audio data). [0055] By these processes, the output of each speaker is stopped, and an audio output for headphones is given to the headphones 25 through the wireless receiver 20, and a state for headphone viewing is realized. [0056] As described above, according to the AV system of this embodiment, the operating mode of the audio output is automatically changed only by attaching and detaching the wireless receiver 20 to the mounting portion 31 of the rear speaker device 30. The user can easily switch the mode of the audio output suited to the use of the headphone and the output of the speaker without troublesome operations. [0057] Also, since the audio output to the rear speaker device 30 is by wireless transmission via the 10-05-2019 15 wireless receiver 20, the rear speaker device 30 can also be made wireless, and the wireless circuit for wireless transmission is for headphones and for rear speakers And the cost can be reduced accordingly. In addition, there is no inconvenience that interference occurs between the headphone wireless signal and the speaker wireless signal. [0058] The present invention is not limited to the above embodiment, and various modifications are possible. For example, in the above embodiment, a display device with an optical disk reproduction function is exemplified as an AV device, but for example, a digital television receiver, an optical disk reproduction device separated from a display or main speaker, a tuner device, a set top box, etc. It is possible to apply various AV devices that output audio and video. [0059] In the above embodiment, the example in which the speaker apparatus is applied to the rear speaker is shown, but in the case of supporting a multi-channel sound source having a larger number of channels, it can be applied to another speaker for surround . The present invention can also be applied to a speaker device that performs main audio output at a distance from the AV device. [0060] In the above embodiment, transmission and reception of status information is always performed every short cycle to convey the mounting state of the wireless receiver to the display device, but for example, only when the mounting state is changed The changed status information may be transmitted from the wireless receiver 20. In this case, by transmitting a response signal of reception confirmation from the display device 10 and repeatedly transmitting the changed status information from the wireless receiver 20 until the transmission is received, the certainty 10-05-2019 16 of transmission and reception of the status information can be secured. [0061] Further, in the above embodiment, detection of attachment / non-attachment of the wireless receiver is performed by monitoring the impedance of a predetermined terminal, but, for example, the bottom of the wireless receiver 20 or the attachment portion 31 may be detected. A mechanical switch may be provided, and the mounting / non-mounting state may be detected based on the detection output from the mechanical switch. [0062] Further, although the configuration for wirelessly transmitting digital audio data has been shown in the above embodiment, it may be configured to wirelessly transmit analog audio signals. Moreover, it is good also as a structure which used not infrared rays but infrared rays. Also, the configuration for transmitting and receiving audio signals and audio data and the configuration for transmitting and receiving status information indicating mounting / non-mounting of the wireless receiver may be separately configured. [0063] Further, in the above embodiment, although the wireless receiver is configured separately from the headphones, as shown in FIG. 6 showing another modification, the wireless receiver may be configured to incorporate the function of the wireless receiver in the headphones 40. good. In this case, the mounting portions 31B and 31B may be provided so that the headphones 40 themselves can be mounted to the speaker device 30B. Also, various methods can be applied to this mounting method. [0064] In addition, the detailed configurations, methods, and the like described in the embodiments can be appropriately changed without departing from the scope of the invention. [0065] 10-05-2019 17 FIG. 1 is a configuration diagram showing an entire AV system according to an embodiment of the present invention. It is a block diagram which shows the circuit structure of each component apparatus of AV system. FIG. 6 is a flow chart illustrating a process for transmitting and receiving status information performed by the display device and the wireless receiver. When a wireless receiver is mounted ¦ worn with a rear speaker apparatus, it is a flowchart explaining the processing content performed by each apparatus. It is a flowchart explaining the processing content performed by each apparatus, when a wireless receiver is removed from a rear speaker apparatus. It is a block diagram which shows the example which made the wireless receiver integral with the headphone. Explanation of sign [0066] DESCRIPTION OF SYMBOLS 10 display apparatus (AV apparatus) 11 display part 12 speaker 101 disc reproduction part 102 signal processing circuit 103 amplifier 104 controller 105 wireless transmission / reception circuit 20 wireless receiver 25 headphone 201 wireless transmission / reception circuit 202 signal processing circuit 203 amplifier 204 headphone connection terminal 205 output Circuit 206 Connection detection circuit (connection detection means) 207 Voice output terminal 209 Controller 211 Charge input terminal 212 Battery 30 Rear speaker device 31 Mounting part 32 Speaker 301 Voice input terminal 302 Input circuit 303 Amplifier 304 Connection detection circuit 305 Power control circuit 310 Power supply circuit 311 Charging circuit 312 Charging output terminal 10-05-2019 18
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