JP2008010973A - Transmission apparatus and acoustic reproduction system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission apparatus capable of stably transmitting acoustic data from an acoustic reproduction apparatus to an acoustic output apparatus. <P>SOLUTION: The transmission apparatus 2 transmits the acoustic data reproduced by the acoustic reproduction apparatus 1 carried by a listener to the acoustic output apparatus 5 equipped by the viewer by means of optical communication. The transmission apparatus 2 includes a mounting part for mounting its own apparatus at a position at which the transmission apparatus 2 can establish the communication with the acoustic output apparatus 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a transmission device and a sound reproduction system for transmitting sound data reproduced by a sound reproduction device carried by a viewer to a sound output device equipped by the viewer by data communication using an optical signal. It is.

  In recent years, infrared communication has been used as a wireless communication means between information appliances such as a remote control for home appliances or a notebook personal computer. A communication device that realizes infrared communication converts data to be transmitted into an optical signal, and transmits and receives data using the optical signal. Therefore, the communication device includes a transmission unit that converts data into an optical signal and transmits the optical signal to another communication device, and a reception unit that converts an optical signal received from the other communication device into data.

  As a device that has the above-described configuration and enables so-called full-duplex communication that simultaneously transmits an optical signal to another device and receives an optical signal from another device, for example, in Patent Document 1 An infrared communication device is shown.

  In this infrared communication device, on the optical signal path between the transmitting unit and the receiving unit, two polarizing plates whose polarization angles are orthogonal to each other are provided, adjacent to the two polarizing plates, and on the optical signal path, A wavefront rotating unit that rotates the wavefront of the optical signal passing therethrough is provided. For this reason, full duplex communication can be performed regardless of the arrangement angle between devices.

  In addition, a transmission system disclosed in Patent Document 2 is disclosed as a transmission system that can transmit infrared transmission from two or more systems without causing interference. In this transmission system, the polarization plane between the polarizing plate that transmits the light emitted from the transmitting unit and the polarizing plate that receives the light in the receiving device is the polarizing plate in the other transmitting device and the other transmitting device. The polarization plane is different from that of the polarizing plate of another receiving device that receives light from the device.

  As described above, in infrared communication, full duplex communication can be performed without causing interference between infrared transmissions from two or more systems and regardless of the arrangement angle between devices. Thus, as the technology of infrared communication is improved, the use of infrared communication is expanding.

  As a specific example of the system using the infrared communication, for example, the following sound reproduction system has been developed. That is, the sound reproduction system receives a sound reproduction device such as a stereo, a transmission device that wirelessly transmits sound data reproduced by the sound reproduction device, and receives and outputs the sound data transmitted from the transmission device. It consists of a sound output device such as headphones.

In this sound reproduction system, the sound reproduction device and the transmission device are connected by wire, and each is installed at a predetermined position. On the other hand, the sound output device is carried by the user,
The acoustic data transmitted from the transmitter by optical communication can be received.

In this way, by transmitting the acoustic data transmitted between the transmission device and the sound output device by optical communication, compared with a system in which the sound reproduction device and the sound output device are connected by wire such as a wire. Thus, the user can listen to the reproduced music without feeling bothered by the cable.
JP 2001-177477 A (released on June 29, 2001) JP 9-83437 A (published March 28, 1997)

  By the way, as main styles of listening to music using an acoustic output device such as headphones, when listening to music reproduced by a stationary acoustic reproduction device installed in a room or the like and reproduced by a portable acoustic reproduction device There are times when you listen to music.

  However, in the latter mode, the conventional sound reproduction system has a problem that sound data cannot be stably transmitted.

  That is, the above-described conventional sound reproduction system does not have a configuration that assumes the latter style. In particular, it does not assume a usage style in which the sound reproduction device is accommodated in equipment such as a user's clothes pocket.

  For this reason, even when the sound reproduction device and the transmission device constituting the conventional sound reproduction system are downsized so that the user can carry them, when the sound reproduction device is accommodated in the user's equipment and used, The transmitting device is also housed in the equipment. Therefore, in the conventional sound reproduction system, the optical signal output from the transmission device is obstructed by the equipment such as the pocket, and the optical communication with the sound output device cannot be established stably.

  Therefore, in the conventional configuration described above, there arises a problem that the sound output device cannot stably receive the sound data from the sound reproduction device accommodated in the user's equipment.

  The present invention has been made in view of the above problems, and an object of the present invention is to realize a transmission device and a sound reproduction system that can stably transmit sound data from the sound reproduction device to the sound output device. It is in.

  In order to solve the above-described problem, the transmission device according to the present invention is an acoustic output device that performs output processing based on the acoustic data that the viewer equips with the acoustic data reproduced by the acoustic reproduction device carried by the viewer. On the other hand, it is a transmission device that transmits by wireless data communication using an optical signal, and is characterized by comprising a mounting portion for mounting the device on the viewer himself or the equipment of the viewer.

  The sound reproducing device can be realized by, for example, a portable terminal device such as a PDA (personal digital assistance) or a portable telephone with a music reproducing function. The sound output device can be realized by a portable receiver such as a headphone or an earphone.

  Examples of the wireless data communication using the optical signal include wireless data communication (infrared communication, visible light communication) using infrared light and visible light.

  According to the above configuration, since the transmission device includes the mounting unit, for example, the transmission device can be mounted at a position where communication with the sound output device can be established.

  For this reason, even when the sound reproducing device is housed in a viewer's pocket or other equipment, the transmitting device is mounted outside the pocket so that data communication using an optical signal can be performed. Can be made. That is, the transmission device can be arranged so that communication established between the transmission device and the mobile terminal device is not hindered.

  Therefore, the transmission device according to the present invention has an effect that the sound data from the sound reproduction device can be stably transmitted to the sound output device.

  In the transmitting apparatus according to the present invention, in the configuration described above, it is preferable that the mounting portion has a clip shape.

  Further, the transmission device according to the present invention may include a compression unit that compresses the acoustic data in the above configuration, and may be configured to transmit the acoustic data compressed by the compression unit to the acoustic output device.

  According to the said structure, since the compression part is provided, the transmitter can transmit acoustic data efficiently.

  In the transmission device according to the present invention, in the configuration described above, the sound output device performs output processing based on a plurality of pieces of sound data. In the sound output device, the sound data different from each other in the plurality of pieces of sound data. May be configured to include a transmission instructing unit that gives output timing information that defines a timing for performing output processing to each of the acoustic data and instructs transmission.

  According to the above configuration, since the transmission instruction unit is provided, even when different acoustic data is transmitted, the timing of output processing on the acoustic output device side can be defined based on the respective acoustic data.

  Therefore, the transmission device according to the present invention can specify that output processing based on acoustic data can be appropriately executed, and transmit the acoustic data to the acoustic output device.

  Further, in the transmission device according to the present invention, in the configuration described above, the compression unit divides the entire acoustic data to be transmitted, compresses each of the acoustic data, and the acoustic data divided and compressed by the compression unit However, the sound output device is configured to include a transmission instructing unit that gives the compressed sound data restoration information for allowing the sound output device to restore the sound data as continuous sound data, and instructs transmission of the sound data. Also good.

  Since the compression unit can divide and compress the acoustic data to be transmitted, the acoustic data can be efficiently transmitted even when the amount of acoustic data to be transmitted is large.

  In addition, since the transmission instruction unit is provided, it can be defined that each of the divided acoustic data can be restored to be one continuous data.

  Therefore, the transmission apparatus according to the present invention can regulate the acoustic data so that it can be efficiently transmitted, and the transmitted acoustic data can be appropriately restored on the acoustic output apparatus side.

  The transmission device according to the present invention further includes a reception unit that receives reception completion information indicating that preparation for reception of acoustic data is completed from the acoustic output device in the configuration described above, and the transmission instruction unit includes Depending on the reception completion information received by the reception unit, the sound output device may be configured to instruct transmission of the next sound data.

  According to the above configuration, since the receiving unit is provided, it is possible to grasp that preparation for receiving acoustic data is completed in the acoustic output device. Then, after confirming that the preparation for receiving the acoustic data is completed, the transmission instruction unit can instruct the transmission of the next acoustic data. For this reason, the transmission device according to the present invention can prevent the transmission of acoustic data beyond the amount of data that can be received by the acoustic output device.

  Therefore, the transmission apparatus according to the present invention can efficiently transmit acoustic data with an appropriate data amount.

  Further, in the above-described configuration, the transmission device according to the present invention includes a polarization unit that transmits only light having a constant vibration direction, and transmits an optical signal of the acoustic data to the acoustic output device via the polarization unit. The transmission axis direction of the light of the polarization unit may be different from that of other transmission devices that transmit acoustic data to the acoustic output device.

  According to the above configuration, the transmission device includes the polarization unit whose light transmission axis direction is different from that of the transmission device that establishes other communication.

  For this reason, it is possible to prevent the optical signal transmitted from the transmission apparatus according to the present invention and the optical signal transmitted from another transmission apparatus from being mixed and received by the acoustic output apparatus.

  In order to solve the above-described problem, the sound reproduction system according to the present invention is equipped with sound data reproduced by the sound reproduction device carried by the viewer, and is output by the viewer based on the sound data. A transmission device that transmits data to a device through data communication using an optical signal, the transmission device including the mounting unit, the compression unit, the transmission instruction unit, and the reception unit, and the transmission device And a sound output device that outputs the sound data.

  Therefore, the sound reproduction system according to the present invention has an effect that the sound data from the sound reproduction device can be stably transmitted to the sound output device.

  In the sound reproduction system according to the present invention, in the configuration described above, a plurality of sets of receiving devices and transmitting devices that establish communication are provided, and each of the receiving devices and the transmitting devices has a light whose vibration direction is a constant direction. The transmission unit direction of light of the polarization unit is the same in the pair of the transmission device and the reception device that establishes communication, and the transmission device and reception that establishes other communication. It is preferably different from the set with the device.

  According to the above configuration, the polarization direction in which the transmission axis direction of light is the same in the pair of the transmission device and the reception device that establishes communication, and is different from the pair of the transmission device and the reception device that establishes other communication. The receiving device and the transmitting device include the unit. For this reason, it is possible to prevent interference between other sets of communication other than the set of the receiving device and the transmitting device that establish communication.

  Therefore, the sound reproduction system according to the present invention can communicate without interfering with each other even when two or more systems of communication are established.

  Further, the sound reproduction system according to the present invention further includes a transmission device other than the transmission device that transmits sound data to the sound output device by data communication using an optical signal in the configuration described above. The receiving device may be configured to establish communication with the other transmitting device.

  According to the above configuration, the receiving apparatus can establish communication with other transmitting apparatuses other than the transmitting apparatus. That is, the receiving device can also be used as a device that receives information from the other transmitting device.

  As described above, the transmission device according to the present invention is equipped with the audio data reproduced by the audio reproduction device carried by the viewer, and the audio output device that is equipped with the viewer and performs output processing based on the audio data. A transmission apparatus that transmits data by wireless data communication using an optical signal, and includes a mounting unit for mounting the apparatus on a viewer himself or his / her equipment.

  Therefore, the transmission device according to the present invention has an effect that the sound data from the sound reproduction device can be stably transmitted to the sound output device.

  As described above, the sound reproduction system according to the present invention is provided for the sound output device that is equipped with the viewer and outputs the sound data reproduced by the sound reproduction device carried by the viewer based on the sound data. A transmission device that transmits data communication using an optical signal, the transmission device including the mounting unit, the compression unit, the transmission instruction unit, and the reception unit; and acoustic data transmitted from the transmission device. And a sound output device that outputs the sound data.

  Therefore, the sound reproduction system according to the present invention has an effect that the sound data from the sound reproduction device can be stably transmitted to the sound output device.

  An embodiment of the present invention will be described below with reference to FIGS. That is, the sound reproduction system 100 according to the present embodiment is configured to include a sound reproduction device 1, a transmission device 2, and a sound output device 5, as shown in FIG. FIG. 2 shows an embodiment of the present invention, and is a block diagram showing a main configuration of the sound reproduction system 100.

  The sound reproducing device 1 is for reproducing sound data, and is formed in a size that can be carried by a user. The sound reproducing device 1 can be realized by a portable terminal device such as a PDA (personal digital assistance).

  The transmission device 2 transmits the acoustic data reproduced by the acoustic reproduction device 1 to the acoustic output device 5 by infrared communication. The transmission device 2 is connected to the sound reproduction device 1 by wire such as a wire, and can receive the sound data reproduced from the sound reproduction device 1 through the wire. Then, the received acoustic data is converted into an optical signal (infrared transmission signal) and transmitted to the acoustic output device 5.

  The sound output device 5 performs output processing based on the sound data received from the transmission device 2 and can be realized by, for example, headphones or earphones. As shown in FIG. 2, the sound output device 5 includes a receiving device 3 and a sound output processing unit 4.

  The receiving device 3 receives the infrared transmission signal of the acoustic data transmitted from the transmitting device 2 and restores it to a viewable format, that is, an audio signal. The receiving device 3 transmits the acoustic data restored as an audio signal to the acoustic output processing unit 4.

  The acoustic output processing unit 4 performs processing to output sound from the speaker unit based on the acoustic data received from the receiving device 3.

  In the sound reproduction system 100 according to the present embodiment, the receiving device 3 and the sound output processing unit 4 are connected by a wire (wired), and are integrally formed as a sound output device 5 in one housing. ing. For this reason, when the user views the sound data reproduced by the sound reproducing device 1, the user only needs to equip the sound output device 5 in which the receiving device 3 and the sound output device 5 are integrated. 3 and the sound output processing unit 4 need not be provided separately.

  Here, a usage mode of the sound reproduction system 100 according to the present embodiment will be described with reference to FIG. In addition, this FIG. 3 is a figure which shows an example of the usage condition of the sound reproduction system 100 which concerns on this Embodiment.

  As shown in FIG. 3, the sound reproducing device 1 is accommodated and held in a pocket or the like of a user's clothes. For this reason, it is not necessary for the user to always hold the sound reproducing device 1 in his / her hand, and the trouble of carrying the sound reproducing device 1 does not occur.

  In addition, the transmission device 2 connected to the sound reproduction device 1 with a wire includes a mounting portion for fixing the device itself to a user's clothing or the like. More specifically, as shown in FIG. 1, the transmission device 2 is fixed to the edge of the mouth portion of the pocket by a clip as the mounting portion, and is not accommodated inside the pocket, for example. Yes. FIG. 1 illustrates an embodiment of the present invention, and is a diagram illustrating an example of a mounting state of a transmission device 2.

  An infrared light path for transmitting the transmission device according to the present embodiment to the reception device 3 included in the sound output device 5 by the above-described mounting unit is not obstructed, and preferably does not hinder user activity. Can be fixed in place.

  In addition, in the sound reproduction system 100 according to the present embodiment, the transmission device 2 is fixed to the mouth of the pocket by the mounting portion, but the position where the transmission device 2 is fixed is not limited to this.

  That is, the position where the transmission device 2 is fixed is the viewer himself or the equipment of the viewer. When the transmitter 2 is fixed to the viewer himself / herself, the mounting portion can be realized as a band such as a wristwatch or a neck strap (choker), for example.

  On the other hand, when the transmission apparatus 2 is fixed to the equipment, when the equipment is clothes or the like, it can be realized as a clip, Velcro (registered trademark), a pin, or the like.

  Therefore, the transmission device 2 in the sound system according to the present embodiment can stably transmit the sound data reproduced by the sound reproduction device 1 accommodated in the user's pocket to the sound output device 5.

  Here, in the sound reproduction system 100 having the above-described configuration, in the case of a configuration including one receiving device 3, in the case of a configuration including two receiving devices 3, and data transmitted from devices other than the sound reproducing device 1 In the case of the configuration for receiving the signal, each will be described as a first embodiment, a second embodiment, and a third embodiment.

(Example 1)
First, as shown in FIG. 3, a sound reproduction system 100 in the case where one receiving device 3 is provided will be described. Here, as shown in FIG. 3, it is assumed that the receiving device 3 is disposed in the vicinity of either one of the speaker units in contact with the user's ear in the sound output device 5.

  In the sound reproduction system 100 shown in the first embodiment, the sound reproduction device 1 is accommodated in a user's breast pocket. Then, the chest pocket mouth is placed by the mounting portion so that the receiver 3 can receive the infrared light output from the transmitter 2, that is, a position where communication between the transmitter 2 and the receiver 3 is established. In addition, the transmission device 2 is fixed.

  In the sound reproduction system 100 in which the devices are arranged in this way, the sound data transfer between the transmission device 2 and the reception device 3 is executed as follows.

  First, as shown in FIG. 4, the transmission device 2 is configured to include an A / D conversion circuit 21, a compression circuit 22, a control circuit 23, a transmission circuit 24, and an antenna 25. FIG. 4 shows an embodiment of the present invention, and is a block diagram showing a main configuration of the transmission apparatus 2.

  In the transmission device 2, the A / D conversion circuit 21 converts the sound data received from the sound reproduction device 1 from an analog signal to a digital signal and outputs the converted signal to the compression circuit 22. When the compression circuit 22 receives the input of the acoustic data converted into the digital signal, the compression circuit 22 divides the data into a predetermined amount of data, compresses each, and outputs the compressed data to the control circuit 23.

  In the control circuit 23, a timing signal (restoration information) is attached so that each of the compressed acoustic data becomes continuous data when decompressed by the receiving device 3, and data for transmission is generated. Then, the control circuit 23 outputs the generated transmission data to the transmission circuit 24 and instructs transmission of the transmission data. In the transmission circuit 24, the transmission data input by the control circuit 23 is converted into an optical signal (infrared transmission signal) and transmitted to the reception device 3 through the antenna 25.

  On the other hand, the receiving device 3 is configured to include an antenna 31, a receiving circuit 32, a receiving control circuit 33, an expansion circuit 34, and a D / A conversion circuit 35 as shown in FIG. FIG. 5 shows an embodiment of the present invention, and is a block diagram showing a configuration of a main part of the receiving device 3.

  In the receiving device 3, when the receiving circuit 32 receives the optical signal (acoustic data transmission data) transmitted from the transmitting device 2 through the antenna 31, the receiving circuit 32 converts the optical signal into an electric signal, and receives the receiving control circuit. 33. The reception control circuit 33 restores the input transmission data so as to be continuous data based on the added timing signal, and inputs the data to the decompression circuit 34.

  The decompression circuit 34 decompresses the restored transmission data input from the reception control circuit 33 and outputs it to the D / A conversion circuit 35. In the D / A conversion circuit 35, the expanded transmission data is converted from a digital signal to an audio signal and transmitted to the sound output processing unit 4.

  As described above, in the case of a configuration including one receiving device 3, the transmitting device 2 is fixed at a position where communication with the receiving device 3 can be established, and the acoustic data transmitted by the transmitting device 2 is received by the receiving device 3. The sound can be received and processed by the sound output processing unit 4.

  Therefore, the transmission device 2 can be regulated so that the acoustic data can be efficiently transmitted and the transmitted acoustic data can be properly restored on the acoustic output device 5 side.

  Further, in the above-described sound reproduction system 100, the sound data output from the left speaker unit (L sound data) and the sound data output from the right speaker (R sound data) in the sound output device 5 are combined. It can also be configured to transmit from the transmission device 2 to the reception device 3.

  In the case of such a configuration, acoustic data transfer between the transmission device 2 and the reception device 3 is executed as follows.

  The A / D conversion circuit 21 converts the audio signals of the L and R acoustic data received from the sound reproducing device 1 from analog signals to digital signals and outputs them to the compression circuit 22. When the compression circuit 22 receives the input of the acoustic data for L and R converted into digital signals, the compression circuit 22 divides each data by an appropriate data amount and compresses the data. These compressed data are output to the control circuit 23.

  The control circuit 23 outputs a timing signal (output) so that the compressed L acoustic data and R acoustic data become continuous data when the receiving apparatus 3 expands them, and each is output at an appropriate timing. Timing information) is added and integrated as transmission data. Then, the control circuit 23 outputs the generated transmission data to the transmission circuit 24. In the transmission circuit 24, the transmission data input by the control circuit 23 is converted into an optical signal (infrared transmission signal) and transmitted to the reception device 3 through the antenna 25.

  On the other hand, in the receiving apparatus 3, when the receiving circuit 32 receives the optical signal (data for transmission) transmitted from the transmitting apparatus 2 through the antenna 31, the receiving circuit 32 converts the optical signal into an electric signal and inputs it to the reception control circuit 33. . Based on the added timing signal, the reception control circuit 33 restores the L acoustic data and the R acoustic data to be continuous data based on the added timing signal, and inputs the data to the decompression circuit 34. .

  The decompression circuit 34 decompresses each of the restored transmission data (L acoustic data and R acoustic data) input from the reception control circuit 33 and outputs the decompressed data to the D / A conversion circuit 35. The D / A conversion circuit 35 converts each of the expanded transmission data (L acoustic data and R acoustic data) from a digital signal to a sound signal and transmits the sound signal to the sound output processing unit 4.

  As described above, the transmission device 2 can prescribe the output processing based on the sound data on the sound output device 5 side so as to be appropriately executed, and can transmit the sound data to the sound output device 5.

  In the sound reproduction system 100, the transmission device 2 includes the compression circuit 22 as described above, and the sound data is compressed and transmitted to the reception device 3 by infrared rays as shown in FIG. In addition, the receiving device 3 includes a decompression circuit 34 and can decompress and restore the compressed acoustic data.

  As described above, in the sound reproduction system 100, since the transmission device 2 can compress and transmit the sound data, the transmission efficiency of the sound data can be increased. The acoustic data to be transmitted may be compressed all at once and transmitted once, or may be divided into two or more times and transmitted intermittently.

  Note that FIG. 6 described above is a diagram illustrating an example of a transmission form of transmission data in the acoustic data transfer according to the acoustic reproduction system 100 according to the present embodiment.

  However, when the sound data received by the sound reproducing device 1 is output from the sound output device 5 in real time as it is, the sound data is not compressed and transmitted between the transmitting device 2 and the receiving device 3 as shown in FIG. Is done. FIG. 7 is a diagram illustrating an example of a transmission form when the transmission data is streaming data in the acoustic data transfer according to the acoustic reproduction system 100 according to the present embodiment.

  Further, in the acoustic reproduction system 100, as described above, even when different acoustic data of the L acoustic data and the R acoustic data is transmitted, the transmission device 2 can transmit the L data as shown in FIG. The acoustic data for R and the acoustic data for R can be respectively compressed, and a transmission signal can be created by attaching a timing signal and transmitted to the receiving device 3.

  In addition, when receiving the transmission data, the receiving device 3 restores the L acoustic data and the R acoustic data based on the timing signal, and the L speaker unit and the R speaker unit are respectively restored at appropriate timings. Can be output from.

  As described above, the sound reproduction system 100 can appropriately transmit different sound data from the transmission device 2 to the reception device 3. In addition, FIG. 8 is a figure which shows an example of the transmission form in the case of transmitting the transmission data of a different kind in the acoustic data transfer which concerns on the acoustic reproduction system 100 which concerns on this Embodiment.

  In addition, when the sound reproduction system 100 is configured to be capable of bidirectional communication between the transmission device 2 and the reception device 3 and configured to transmit and receive information by a half-duplex method, the following is performed. Thus, the acoustic data can be transmitted.

  That is, as shown in FIG. 9, the transmission apparatus 2 further includes a second reception circuit 26 in the configuration shown in FIG. 4, while the reception apparatus 3 further includes a second transmission circuit 36 in the configuration shown in FIG. Is provided. When the transmission data (acoustic data) compressed from the transmission device 2 to the reception device 3 is transmitted as described above, the reception device 3 converts the optical signal from the optical signal into the electrical signal. The reception control circuit 33 restores the transmission data (acoustic data). In this way, when the transmission data (acoustic data) received by the reception control circuit 33 is restored, an instruction to instruct the second transmission circuit 36 to transmit a ready signal (reception completion information) to the transmission device 2. Input the signal. In response to this instruction signal, the second transmission circuit 36 transmits a ready signal to the transmission device 2 through the antenna 31b.

  The ready signal is a signal indicating that the reception device 3 is ready to receive the next transmission data (acoustic data).

  In the transmission device 2, the second reception circuit 26 receives this ready signal through the antenna 25 b and inputs the ready signal to the control circuit 23. When the ready signal is input from the second receiving circuit 26, the control circuit 23 generates the next transmission data and causes the receiving device 3 to transmit the transmission data via the transmission circuit.

  In this way, a ready signal is transmitted from the receiving device 3 side, and transmission data is transmitted from the transmitting device 2 to the receiving device 3 in response to the ready signal. It is possible to prevent transmission data exceeding the allowable amount from being transmitted. Therefore, even when a large amount of data is transmitted from the transmission device 2 to the reception device 3, the transmission data can be transmitted efficiently.

  Note that FIG. 9 referred to above is a block diagram illustrating the main configuration of each of the transmission device 2 and the reception device 3 according to the present embodiment when a ready signal is transmitted from the reception device 3.

(Example 2)
Next, as shown in FIG. 10, an acoustic reproduction system 100 that includes two receiving devices 3 (receiving device 3 (R) and receiving device 3 (L)) and transmits acoustic data to each of these receiving devices 3 will be described. To do. In addition, this FIG. 10 is a figure which shows an example of the usage condition of the sound reproduction system 100 in another Example which concerns on this Embodiment.

  First, here, it is assumed that the receiving device 3 is disposed in each of the speaker units in contact with the user's ear in the sound output device 5. Here, for convenience of explanation, the receiving device 3 disposed in the L speaker unit that is in contact with the user's left ear is referred to as the L receiving device 3 (L), and on the other hand, the R that is in contact with the user's right ear. The receiving device 3 arranged in the speaker unit for use is referred to as an R receiving device 3 (R).

  In the sound reproduction system 100 shown in the second embodiment, as in the first embodiment, the sound reproduction device 1 is accommodated in a user's chest pocket. Then, the mounting unit places the chest of the user so that the receiver 3 can receive the infrared light output from the transmitter 2, that is, a position where optical communication is established between the transmitter 2 and the receiver 3. The transmission device 2 is fixed near the center of.

  In the sound reproduction system 100 in which the devices are arranged in this way, the sound data transfer between the transmission device 2 and the reception device 3 is executed as follows.

  First, as shown in FIG. 11, each of the R receiving device 3 (R) and the L receiving device 3 (L) includes a polarizing plate (polarizing unit) R1 and a polarizing plate (polarizing unit) L1. And each of this polarizing plate R1 and polarizing plate L1 is comprised so that both transmission-axis directions may orthogonally cross. FIG. 11 is a diagram illustrating an example of a polarizing plate included in the receiving device 3 illustrated in another example according to the present embodiment.

  On the other hand, as illustrated in FIG. 12, the transmission device 2 that transmits acoustic data to each of the R reception device 3 (R) and the L reception device 3 (L) performs R communication that performs optical communication with the R reception device 3. A device 2 (R) and an L transmission device 2 (L) that performs optical communication with the L reception device 3 (L) are provided. FIG. 12 is a diagram illustrating an example of a polarizing plate included in the transmission device 2 illustrated in another example according to the present embodiment.

  The R transmitting device 2 (R) and the L transmitting device 2 (L) respectively include polarizing plates (polarizing units) R2 and L2, and the polarizing plates R2 and L2 have orthogonal transmission axis directions, and polarizing plates R1 and polarizing plate R2, and polarizing plate L1 and polarizing plate L2 are configured such that the transmission axis directions coincide with each other.

  For this reason, the optical signal transmitted from the R transmitter 2 (R) is received by the L receiver 3 (L), or conversely, the optical signal transmitted from the L transmitter 2 (L) is used for the R. It is possible to prevent the reception device 3 (R) from receiving the data.

  Therefore, between the transmission device 2 and the reception device 3 according to the second embodiment, the optical signal transmitted from the R transmission device 2 (R) and the optical signal transmitted from the L transmission device 2 (L) are R The receiving device 3 (R) and the receiving device 3 (L) for L can transmit both of them simultaneously without causing interference.

  The acoustic data transfer between the transmission device 2 and the reception device 3 shown in the second embodiment is performed between the L transmission device 2 (L) and the L reception device 3 (L), and also for the R transmission. Since the transmission is performed in the same manner as the acoustic data transfer between the transmission device 2 and the reception device 3 shown in the first embodiment, between the device 2 (R) and the R reception device 3 (R), the description thereof will be given. Omitted.

  As described above, two receiving apparatuses 3 (L receiving apparatus 3 (L) and R receiving apparatus 3 (R)) and two transmitting apparatuses 2 (L transmitting apparatus 2 (L) and R transmitting apparatus). 2 (L)), the L acoustic data and the R acoustic data can be transmitted so as not to interfere with each other. In addition, in the case of the structure which transmits the acoustic data for L and R separately in this way, the transmitter 2 is fixed to the following positions.

  That is, the transmitter 2 is a position where the L transmitter 2 can establish communication with the L receiver 3, and the R transmitter 2 can establish communication with the R receiver 3. Each of the L transmission device 2 and the R transmission device 2 is fixed to a user's clothes or the like by a mounting portion.

(Example 3)
Next, with reference to FIG. 13 and FIG. 14, an acoustic reproduction system 100 that can receive acoustic data also from the transmission device 9 other than the transmission device 2 mounted on the user's equipment by the mounting unit will be described. FIGS. 13 and 14 are diagrams showing examples of usage modes of the sound reproduction system 100 shown in another example according to the present embodiment.

  More specifically, in the sound reproduction system 100 according to the third embodiment, first, as illustrated in FIG. 13, it is assumed that a user equipped with the sound output device 5 including the receiving device 3 is sitting on a seat.

  Further, the user houses the sound reproducing device 1 in a pocket, attaches the transmitting device 2 to the edge of the mouth of the pocket by the attaching portion, and performs optical communication between the transmitting device 2 and the receiving device 3. It can be established.

  In addition, the seat on which the user is sitting is provided with a second transmission device 9 different from the transmission device 2 described above, and this second transmission device 9 received from the sound reproduction device 1 (not shown). The acoustic data can be transmitted to the receiving device 3.

  As described above, the reception device 3 can receive the acoustic data from either the transmission device 2 or the second transmission device 9, and can output the received acoustic data by the acoustic output processing unit 4. The receiving device 3 has directivity so that the acoustic data transmitted from the transmitting device 2 and the second transmitting device 9 can be received.

  For this reason, in the sound reproduction system 100 shown in Example 2, for example, when there is no transmission of acoustic data from the transmission device 2, the acoustic data from the second transmission device 9 can be received and output. In addition, when the acoustic data can be received from both the transmission device 2 and the second transmission device 9, the user turns off the power of the acoustic reproduction device 1 and receives the acoustic data only from the second transmitter 9. You can select the data provider.

  In the above-described sound reproduction system 100, the second transmission device 9 is provided on the seat on which the user is seated. For example, as illustrated in FIG. 14, the second transmission device 9 is provided on the ceiling portion of the room where the user exists. The receiving device 3 may be configured to receive the acoustic data from both the transmitting device 2 and the second transmitting device 9.

  In addition, the receiving device 3 in the sound reproduction system 100 according to the third embodiment has directivity so that acoustic data from both the transmitting device 2 and the second transmitting device 9 can be received. The receiving device 3 for 2 and the receiving device 3 for the second transmitting device 9 may be separately provided.

  Note that the acoustic data transfer between the transmission device 2 and the reception device 3 and the acoustic data transfer between the second transmission device 9 and the reception device 3 in the acoustic reproduction system 100 according to the third embodiment are the same as those in the above embodiment. 1 is performed in the same manner as the acoustic data transfer between the transmission device 2 and the reception device 3 shown in FIG.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The transmission device according to the present invention includes a mounting portion when transmitting acoustic data from a portable acoustic reproduction device to an acoustic output device by data communication using an optical signal such as infrared rays. The transmission device can be mounted at a position that is not obstructed.

  For this reason, data communication executed between the sound reproduction device and the sound output device can be performed wirelessly, and stable data communication can be realized without causing the user to feel bothered.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a diagram illustrating an example of a mounting state of a transmission device. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a block diagram illustrating a main configuration of a sound reproduction system. It is a figure which shows an example of the usage condition of the sound reproduction system which concerns on this Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a block diagram illustrating a main configuration of a transmission device. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention and is a block diagram illustrating a configuration of a main part of a receiving device. It is a figure which shows an example of the transmission form of the data for transmission in the acoustic data transfer which concerns on the sound reproduction system which concerns on this Embodiment. It is a figure which shows an example of the transmission form in case the data for transmission are streaming data in the acoustic data transfer which concerns on the sound reproduction system which concerns on this Embodiment. It is a figure which shows an example of the transmission form in the case of transmitting the transmission data of a different kind in the acoustic data transfer which concerns on the sound reproduction system which concerns on this Embodiment. It is a block diagram which shows the principal part structure of each of the transmitter which concerns on this Embodiment, and a receiver when a ready signal is transmitted from a receiver. It is a figure which shows an example of the usage condition of the sound reproduction system in another Example which concerns on this Embodiment. It is a figure which shows an example of the polarizing plate with which the receiver shown in another Example which concerns on this Embodiment is provided. It is a figure which shows an example of the polarizing plate with which the transmitter shown in another Example which concerns on this Embodiment is provided. It is a figure which shows an example of the usage condition of the sound reproduction system shown in another Example which concerns on this Embodiment. It is a figure which shows an example of the usage condition of the sound reproduction system shown in another Example which concerns on this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sound reproduction apparatus 2 Transmission apparatus 2 (L) Transmission apparatus 2 (R) Transmission apparatus 3 Reception apparatus 3 (L) Reception apparatus 3 (R) Reception apparatus 4 Sound output process part 5 Sound output apparatus 6 Mounting part 9 2nd transmission Device (other transmitter)
22 Compression circuit (compression unit)
23 Control circuit (transmission instruction unit)
26 Second receiver circuit (receiver)
100 Sound reproduction system R1 Polarizing plate (polarization part)
R2 Polarizing plate (polarizing part)
L1 Polarizing plate (polarizing part)
L2 Polarizing plate (polarizing part)

Claims (10)

A transmission device that transmits the acoustic data reproduced by the acoustic reproduction device carried by the viewer to the acoustic output device equipped with the viewer based on the acoustic data by wireless data communication using an optical signal Because
A transmission device comprising: a mounting unit for mounting the device on the viewer himself or his / her equipment.   The transmission device according to claim 1, wherein the mounting portion has a clip shape. A compression unit for compressing the acoustic data;
The transmission device according to claim 1, wherein the acoustic data compressed by the compression unit is transmitted to an acoustic output device. The acoustic output device performs output processing based on a plurality of acoustic data,
In the acoustic output device, the acoustic output device includes a transmission instructing unit that gives each of the acoustic data output timing information that defines a timing at which each of the plurality of acoustic data is processed to output different acoustic data. The transmission device according to any one of claims 1 to 3. The compression unit divides the entire acoustic data to be transmitted, compresses each,
Reconstruction information for enabling the acoustic data divided and compressed by the compression unit to be restored as continuous acoustic data in the acoustic output device is given to the compressed acoustic data and instructed to transmit the acoustic data The transmission apparatus according to claim 3, further comprising a transmission instruction unit. A reception unit that receives from the sound output device reception completion information indicating that preparation for reception of acoustic data has been completed;
The transmission device according to claim 4 or 5, wherein the transmission instruction unit instructs the acoustic output device to transmit the next acoustic data according to the reception completion information received by the reception unit. A polarizing part that transmits only light whose vibration direction is a fixed direction is provided.
The optical signal of the acoustic data is output to the acoustic output device via the polarization unit,
The transmission apparatus according to claim 1, wherein a transmission axis direction of light of the polarization unit is different from that of another transmission apparatus that transmits acoustic data to the acoustic output apparatus. The transmission device according to any one of claims 1 to 7,
An acoustic reproduction system comprising: a reception device that receives acoustic data transmitted from the transmission device; and an acoustic output device that outputs the acoustic data.   A plurality of sets of receiving devices and transmitting devices that establish communication are provided, and each of the receiving device and the transmitting device includes a polarization unit that transmits only light whose vibration direction is a constant direction. The sound reproduction is characterized in that the transmission axis direction of the transmission device and the reception device that establishes communication is the same in the pair and the transmission device and reception device that establishes other communication is different system. It further includes a transmission device other than the transmission device that transmits the acoustic data to the acoustic output device by data communication using an optical signal,
10. The sound reproduction system according to claim 8, wherein the reception device can establish communication with the other transmission device.

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