KR20190036765A - Fm broadcasting speaker system and receiving frequency setting method for speakers thereof - Google Patents

Abstract

The present invention relates to an FM broadcasting speaker system. Moreover, the present invention relates to a method for matching transmission and reception frequencies between a plurality of FM transmitters and receivers used in the speaker system. According to the present invention, the FM broadcasting speaker system comprises an FM broadcaster and an FM receiver/player. The FM broadcaster comprises a wireless transceiver and an FM transmitter, and processes a signal received through the wireless transceiver to output the processed signal to the FM transmitter. The FM receiver/player comprises an FM receiver and a speaker, and processes a signal received through the FM receiver to output the processed signal to the speaker. The signal received through the wireless transceiver includes an ID number of the FM receiver/player and broadcasting frequency information of the FM transmitter. Accordingly, the FM broadcasting speaker system receives a multichannel audio stream transmitted through a portable electronic device, such as a smartphone and a tablet PC, through an FM broadcaster to simultaneously transmit the multichannel audio stream to a plurality of FM receiver/players, thereby receiving a multichannel audio stream from a smartphone through Bluetooth to output audio channel signals through a plurality of speakers without a time delay.

Description

FIELD OF THE INVENTION [0001] The present invention relates to an FM broadcasting broadcasting system and a method for setting a receiving frequency of a speaker,

The present invention relates to an FM broadcasting speaker system. The present invention also relates to a method for matching transmission and reception frequencies between a plurality of FM transmitters and a plurality of FM receivers used in the speaker system.

A speaker is a device that outputs sound converted into an electrical signal. The electrically converted sound is called an audio signal. An audio signal reproduced in a speaker system is converted into a multi-channel composite audio signal (AAC) in which a plurality of audio channel signals are encoded by a standard such as Motion Picture Expert Group (MPEG-2), Free Lossless Audio Coder (FLAC) to be. An audio signal such as music can be output to one speaker or output to a speaker system composed of a plurality of speakers.

In a speaker system, audio signals can be output in mono or stereo. When outputting in mono, the same audio signal is output to each speaker of the speaker system. The case where the audio signal is output in mono from the speaker system is referred to as a single channel output. When output in stereo, different audio signals are output to the two speakers of the speaker system. The case where the audio signal is output in stereo in the speaker system is called a two channel audio output. In the present specification, a case where an audio signal is output by two or more channels in a speaker system is referred to as a multi-channel output (including a stereo output).

The speaker system decodes the received multi-channel composite audio signal, restores it into a plurality of audio channel signals, and outputs it to each speaker. In the case of a 2.0 channel speaker system, the speaker system is configured so that the audio signal is output to the two speakers arranged respectively on the left (L) and right (R) of the listener. A surround sound system for enhancing sound effects is a 5.1-channel speaker system (configured to output audio signals to six speakers) or 7.1 channels (configured to output audio signals to eight speakers).

2. Description of the Related Art Recently, a wireless audio player or a speaker system capable of receiving and reproducing an audio signal from a portable device such as a smart phone or a laptop through a Bluetooth or wireless LAN as a stream has been developed. A wireless audio player and a speaker system are disclosed in U.S. Patent Publication No. US 2013/0177186 A1 (entitled WIRELESS AUDIO PLAYER AND SPEAKER SYSTEM). The wireless audio player disclosed in the patent is adapted to receive audio data from an external device such as a smart phone through Bluetooth wireless communication. However, since the audio player does not physically separate a plurality of speakers, even if a multi-channel audio signal is output to a plurality of speakers, the stereo sound is deteriorated.

On the other hand, US 5,708,718 (entitled SURROUND SOUND PROCESSOR SYSTEM) discloses a surround speaker system in which an audio processor and speakers are connected wirelessly without wires. The audio processor has a plurality of FM transmitters, and each of the speakers is connected to an FM receiver. In addition, the receiver connected to each speaker may include a tuner to select a transmitter that transmits an audio channel signal to be output from the speaker.

In addition, International Patent Publication No. WO2013 / 150334A1 (entitled APPARATUS FOR SPLITTING AND OUTPUTING MULTI-CHANNEL COMPOSITE AUDIO SIGNALS) decodes a multi-channel composite audio signal into a plurality of audio channel signals, separates a plurality of audio channel signals And transmits it to a speaker designated by radio. As a wireless transmission method, a method of Bluetooth, FM broadcasting, and the like is disclosed.

In a multi-channel surround sound speaker system with a plurality of speakers, the audio processor transmits different audio channel signals to each of the plurality of speakers. When an audio channel signal is transmitted wirelessly without connecting a wire for signal transmission between the audio processor and the speakers, the audio processor has a transmitter for signal transmission, and each speaker has a receiver for receiving a channel signal .

Also, in a multi-channel surround sound speaker system, each speaker is positioned at the center of the listener. Therefore, the transmitter of the audio processor must transmit an audio channel signal corresponding to the position of the speaker to each receiver. That is, the speaker and the audio channel signal have to be matched appropriately corresponding to the position where the speaker is installed.

In addition, in a multi-channel surround sound speaker system, when a plurality of audio channel signals such as music are wirelessly transmitted to a plurality of speakers, all of the audio channel signals transmitted in radio are synchronized to output a harmonious sound from the speakers. Therefore, the wireless speaker system needs to be configured to simultaneously transmit a plurality of audio channel signals corresponding to each speaker, and each speaker simultaneously outputs the received audio channel signals.

When a plurality of audio channel signals such as music are sequentially transmitted to a plurality of speakers by using a wireless LAN (WLAN) or a Bluetooth (Bluetooth) in one transmitter, There is a delay. Therefore, each speaker receives an audio channel signal corresponding to the installation position at different times. Therefore, there is a technical difficulty in synchronizing the audio channel signals received at different times from a plurality of speakers separated from each other to output one music to be reproduced.

On the other hand, when simultaneously broadcasting audio channel signals corresponding to specific speakers in a plurality of FM transmitters, the receiver installed in each of the plurality of speakers can simultaneously receive different audio channel signals. If the speaker system is configured to simultaneously output the audio channel signals simultaneously received from the respective speakers, the synchronized music can be reproduced. In this case, the audio channel signal corresponding to the installation position of each speaker is predetermined, and the transmitter and the transmission frequency for transmitting the predetermined audio channel signal have to be predetermined. In addition, the receiver frequency of the receiver matched with the transmitter must also be predetermined.

However, in the wireless multi-channel surround speaker system, there are various problems in reproducing the music by changing the number of speakers, changing the audio channel signal reproduced from the speaker, or changing the position of the speakers. For example, if you add a speaker to your stereo speaker system to extend it to a 2.1 channel speaker system, add three speakers to a 2.1 speaker system, or add five speakers to expand to a 5.1 or 7.1 channel speaker system, The processor must designate the audio channel signal corresponding to each speaker, designate the transmitter to transmit the designated channel signal, and set the transmission frequency of the transmitter and the reception frequency of the corresponding receiver. Or 7.1 channel speaker system to be reconfigured with a 4 or 5 channel spear system, the audio channel signal and transmitter and receiver must be matched separately.

In recent years, as the use of portable electronic devices such as smart phones and tablet PCs has been expanded, the use of wireless speakers capable of connecting with portable electronic devices through Bluetooth or wireless LAN communication is increasing. Although a plurality of wireless speakers may be used as a single speaker, if the multi-channel surround sound speaker system can be easily constructed by connecting them, the utility of the speaker can be further enhanced. On the other hand, if the speaker of a multi-channel surround sound speaker system with a plurality of wireless speakers can be partially separated and used as a single speaker in another place and the multi-channel speaker system can be easily reconfigured with the remaining speakers, The utility can be further increased.

It is an object of the present invention to provide a new speaker system which can easily form a multi-channel surround speaker system by combining various numbers of wireless speakers. The speaker system provided according to the present invention is called an FM broadcasting speaker system. The FM broadcasting speaker system can allocate and broadcast a plurality of audio channel signals to respective designated transmitters and wirelessly set the frequencies of the transmitter and the receiver such that predetermined audio channel signals are received from the designated wireless speakers.

Yet another object of the present invention is to provide a method of easily setting a reception frequency of a receiver without installing a tuner for frequency adjustment for operating a user in an FM receiver of a speaker in an FM broadcasting speaker system having the above- .

According to an aspect of the invention, an FM broadcasting speaker system is provided. The FM broadcasting speaker system according to the present invention includes an FM broadcaster and an FM receiver player. The FM broadcaster includes a radio transceiver and an FM transmitter, and processes the signal received by the radio transceiver and outputs the processed signal to the FM transmitter. The FM receiver player includes an FM receiver and a speaker, processes the signal received by the FM receiver, and outputs the signal to the speaker. The signal received by the radio transceiver includes an identification number of the FM receiver player and broadcast frequency information of the FM transmitter.

When the FM broadcaster receives a signal including the receiver player identification number and broadcasting frequency information in the radio transceiver, information including the identification number of the receiver player through the FM transmitter at the broadcasting frequency is transmitted to the RDS data To perform RDS broadcasting. In addition, the FM receiver player may scan the reception frequency at the FM receiver, demodulate the received RDS data when synchronized with the broadcasting frequency of the FM transmitter, and transmit the receiver receiver identification number of the demodulated RDS data to an FM receiver And sets the reception frequency of the FM receiver to the tuned broadcasting frequency when the identification number matches the identification number of the player.

In some embodiments, the FM receiver player is configured to output a sound indicating that the reception frequency of the FM receiver is set by the speaker when the identification number of the demodulated RDS data matches the preset identification number of the FM receiver player . In this case, the FM broadcaster further includes a microphone, and is configured to stop RDS broadcasting of the FM transmitter when a sound indicating a reception frequency setting output from the speaker is input to the microphone.

In some embodiments, the FM receiver player further includes a light emitting diode, and when the identification number of the demodulated RDS data matches the predetermined identification number of the FM receiver player, the reception frequency of the FM receiver Lt; / RTI > is set. In this case, the FM broadcaster further includes a light receiving sensor, and when the signal indicating that the reception frequency outputted from the light emitting diode is set by the light receiving sensor is inputted, the FM broadcaster stops the RDS broadcasting of the FM transmitter do.

In some embodiments, the FM broadcaster further comprises a speaker, wherein the FM broadcaster includes a speaker, wherein the multi-channel composite audio signal stream received by the wireless transceiver is divided into a plurality of single audio channel signals, And output to the speaker of the FM broadcaster.

The FM broadcasting speaker system according to the present invention can be more effectively utilized when there are a plurality of FM receiver players. When there are a plurality of FM receiver players, the FM broadcaster includes a plurality of FM transmitters. In addition, the signal received by the wireless transceiver of the FM broadband player includes identification numbers of the FM receiver players and broadcast frequency information matched with each of the identification numbers. The FM broadcaster may further comprise means for assigning one of the broadcast frequencies received to each of the plurality of FM transmitters when receiving a signal including broadcast frequency information matched with the identification numbers and identification numbers to the radio transceiver, And the RDS data is modulated with RDS data including the identification number matched with the frequency assigned by each of the FM transmitters to perform RDS broadcasting. In addition, each of the FM receiver players may demodulate the received RDS data when the reception frequency is synchronized with the broadcasting frequency of one of the plurality of FM transmitters by scanning the reception frequency in the FM receiver, The reception frequency of the FM receiver is set to the tuned broadcasting frequency when the identification number of the FM receiver matches the identification number of the FM receiver player.

In some embodiments, if there are a plurality of FM receiver players, the FM broadcaster may divide the multi-channel composite audio signal stream received by the wireless transceiver into a plurality of single audio channel signals, May be allocated to the plurality of FM receiver players and broadcast through an FM transmitter matched to the assigned FM receiver player.

In some embodiments, when the identification number of the demodulated RDS data matches the identification number of the FM receiver set in advance, each FM receiver player outputs a sound indicating that the reception frequency of the FM receiver is set by the speaker Output. In this case, the FM broadcaster further includes a microphone. When a sound indicating the reception frequency setting outputted from the speaker of each FM receiver player is input by the microphone, the FM broadcaster outputs the input sound, And to stop RDS broadcasting of the matched FM transmitter.

In some embodiments, each of the FM receiver players further includes a light emitting diode, and when the identification number of the demodulated RDS data matches an identification number of a predetermined FM receiver player, And output a signal indicating that the reception frequency is set. In this case, the FM broadcaster further includes a light receiving sensor, and when a signal indicating that the reception frequency outputted from the light emitting diode of each of the FM receiver players is set by the light receiving sensor is inputted, And to stop RDS broadcasting of an EMS transmitter matched with an EMS receiver player.

According to another aspect of the present invention, there is provided a method of setting a reception frequency of an FM receiver player including an FM receiver and a speaker. A method for setting a reception frequency of an FM receiver player according to the present invention includes the steps of receiving a signal including an identification number of a speaker and an FM broadcasting frequency information in an FM broadcaster including a radio transceiver and an FM transmitter, Modulating the data including the identification number of the FM receiver player into RDS data and broadcasting the RDS data through the FM transmitter at the received FM broadcasting frequency in the broadcaster; Scanning the frequency to be tuned to the broadcasting frequency of the FM transmitter, and if the FM receiver is tuned to the broadcasting frequency of the FM transmitter by frequency scanning in the FM receiver player, The identification number of the steps and, the RDS data demodulated by the FM receiver player for demodulating the predetermined case to be matched with the identification number of the FM receiver player includes the step of setting a broadcasting frequency-tuning the reception frequency of the FM receiver.

The FM broadcaster further includes a microphone, wherein the identification number of the RDS data demodulated by the FM receiver player corresponds to the identification number of the FM receiver player determined in advance A step of outputting a sound indicating that the reception frequency of the FM receiver is set by the speaker if the sound is outputted from the FM transmitter; And stopping the casting.

In the method for setting the reception frequency of the FM receiver player according to the present invention, the FM receiver player further includes a light emitting diode, the FM broadcaster further includes a light receiving sensor, and the RDS demodulated by the FM receiver player Outputting a signal indicating that the reception frequency of the FEM receiver is set to the light emitting diode when the identification number of the data matches the identification number of the FM receiver player determined in advance; And stopping the RDS broadcasting of the FM transmitter when a signal indicating that the reception frequency output from the RF transmitter is set is input.

The FM broadcasting speaker system according to the present invention can easily constitute a multi-channel surround speaker system by combining various numbers of wireless speakers. When the number of speakers of the speaker system is changed, the FM broadcaster allocates and broadcasts an audio channel signal to be output from each of the wireless speakers in the changed state to a designated transmitter, and transmits the audio channel signal to the transmitter and the receiver Set the frequency to wireless. Therefore, the speaker system can be easily changed to 2.1 channel, 5.1 channel, 7.1 channel, etc. if necessary.

In particular, the FM broadcasting speaker system according to the present invention can receive a multi-channel audio stream transmitted through a portable electronic device such as a smart phone or a tablet PC from an FM broadcaster and simultaneously transmit the multi-channel audio stream to a plurality of FM receiver players. That is, the multi-channel audio stream is transmitted from the cellular phone to the Bluetooth, and the audio channel signals can be output from the plurality of speakers without time delay.

 The method of setting the reception frequency of the FM receiver player according to the present invention allows a user to easily set the transmission frequency of the FM broadcaster and the reception frequency of the FM receiver player by using a mobile phone. Therefore, it is possible to confirm whether or not the frequency setting is completed, without installing a tuner for frequency adjustment for the user to operate the receiver of the FM receiver player.

1 is a schematic diagram of an embodiment of an FM broadcasting broadcasting speaker system according to the present invention
2 is a block diagram illustrating an embodiment of an FM broadcaster in the embodiment shown in FIG.
3 is a block diagram illustrating an embodiment of an FM receiver player in the illustrated embodiment of FIG.
4 is a flowchart showing a method of setting a reception frequency of an FM receiver player according to the present invention
5 is a schematic configuration diagram of another embodiment of an FM broadcasting speaker system according to the present invention
6 is a schematic diagram of another embodiment of an FM broadcasting speaker system according to the present invention
Figure 7 is a block diagram illustrating an embodiment of an FM broadcaster in the embodiment shown in Figure 5;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of an embodiment of an FM broadcasting speaker system according to the present invention. The FM broadcasting speaker system of this embodiment includes an FM broadcaster 200 and five FM receiver players 300, 400, 500, 600 and 700. The FM broadcaster 200 receives the multi-channel composite audio stream from the smartphone 100 through Bluetooth, separates the single multi-channel audio signal into a plurality of single audio channel signals, and outputs each of the plurality of separated single audio channel signals to the matched FM transmitters FM broadcast at the same time. The FM receiver players 300, 400, 500, 600, and 700 receive and reproduce a single audio channel signal transmitted at the set reception frequency, respectively.

2, the FM broadcaster 200 includes a Bluetooth 210, five FM transmitters 281-285, a processor 220, a memory 230, a digital signal processor 240, An apparatus 240, and a microphone 250.

The user can set the system configuration such as the arrangement of the receiver player and the reception frequency by using the smartphone 100 before receiving the audio signal such as music as a stream and reproducing it in the receiver player.

Hereinafter, the configuration of the speaker system will be described with reference to FIGS. 2 to 4. FIG.

In order to set up a speaker system or to reproduce music, a wireless communication connection by Bluetooth communication is first performed between the smartphone 100 and the Ethernet broadcaster 200 (S100).

When setting the speaker system, the FM broadcaster 200 receives information for setting the configuration of the speaker system from the smartphone 100 through the Bluetooth 210 (S110). The speaker system configuration setting information includes information on the reception (transmission) frequency information matched with the respective FM receiver player identification numbers previously designated by the user in the smartphone and the arrangement information and identification number of the AM listener player corresponding to the corresponding identification number .

[Table 1] below is an embodiment of the speaker system configuration information.

Receiver player identification number

location
Transmit Receive)
frequency
volume
Tramble
PB 0000

Front Left
90.9
20
0
PB 0001

Front Right
91.9
20
0
PB 0002

Center
92.9
10
0
PB 0003

Rear Left
93.9
15
3
PB 0004

Rear Right
94.9
15
3

1, the identification number of the receiver player 300 is PB 0000, is placed at the front left position, the reception frequency f1 is 90.9 MHz, and the receiver player 500 is located at the front left position, as shown in [Table 1] The identification number of PB 0002 is located at the center position, and the reception frequency is set to 92.9 MHz.

The processor 220 of the FM Broadcaster 200 determines the FM transmitter 281-295 and the transmission frequency to be [ Table 2] (S210).

Receiver player identification number

FM transmitter
Transmission frequency
PB 0000

FMT 1
90.9
PB 0001

FMT 2
91.9
PB 0002

FMT 3
92.9
PB 0003

FMT 4
93.9
PB 0004

FMT 5
94.9

The processor 220 controls the DSP 240 and the FM transmitters 281-285 after assigning the transmit frequency to the FM transmitter corresponding to the identification number of each receiver player so that each of the FM transmitters And the setting information including the identification number of the matched receiver player is modulated by the RDS data and RDS broadcasting is performed.

Referring to FIG. 3, each of the FM receiver players 300, 400, 500, 600 and 700 includes an FM receiver 310, a processor 320, a memory 330, an amplifier 340, and a speaker 350 . The memory 330 of each of the re-secretor players 300, 400, 500, 600, and 700 stores a predetermined identification number.

The processor 320 of the receiver player 300 inputs a scan command from the user at step S310 and causes the FM receiver 310 to scan the reception frequency at step S320. The scan command may be provided by a separate input button on the receiver player 300, or the power source may use the input of the switch as a scan command. When the reception frequency of the FM receiver 310 is tuned to the transmission frequency being broadcast by the frequency scan, the processor 320 demodulates the received RDS data, and the identification number of the demodulated RDS data is stored in an identification number (Step S330). If the demodulated identification number matches the identification number stored in the memory, the processor 320 sets the reception frequency of the receiver 310 to the tuned broadcasting frequency (S340). If the identification number of the demodulated RDS data does not match the identification number stored in the memory, the reception frequency is continuously scanned. The technique of RDS-modulating data and demodulating the modulated RDS data is well known to those skilled in the art of FM broadcasting, and detailed description thereof is omitted.

For example, it is assumed that the receiver player 300 is previously designated with the identification number PB 0000 and stored in the memory. In this case, if the scan frequency of the FM receiver 310 is 92.9 MHz and tuned to the transmit frequency of the FMT 3 transmitter 283 designated as the transmit frequency 92.9 MHz, the processor 320 demodulates the received RDS data. The identification number contained in the RDS data broadcast in the demodulated FMT 3 (283) transmitter is P 0002. The processor 320 demodulates the received RDS data and compares the received RDS data with the stored identification number P 0000, and causes the FM receiver 310 to continue to scan by lowering the reception frequency because the identification numbers do not match. The processor 320 demodulates the received RDS data when the number of can frequencies of the FM receiver 310 is 90.9 MHz and tuned to the transmission frequency of the FMT 1 transmitter 281 specified as the transmission frequency 90.9. The identification number included in the RDS data broadcast in the demodulated FMT 1 transmitter 281 is P 0000 number. The processor 320 demodulates the received RDS data, compares the received RDS data with the stored identification number P0000, and matches the identification number stored in the memory, thereby setting the reception frequency of the FM receiver 310 to 90.9 MHz. The other receiver players 400, 500, 600 and 700 also set the reception frequency of the FM receiver, respectively, as described above. The RDS data to be broadcast may include not only the identification number but also the volume, base, and Tremble designation values. Each receiver player can demodulate the RDS data whose identification number is matched and control the volume, base, tramble, etc. of the signal reproduced by each receiver player with the information contained in the demodulated data.

In some embodiments, the processor 320 of the receiver player 300 sets the reception frequency of the FM receiver 310 when the identification number of the demodulated RDS data matches the specified identification number, It is possible to output a sound of a specific frequency indicating that the setting of the reception frequency is completed (S350). At this time, when the signal of a specific frequency is input to the microphone 250, the processor 220 of the broadcaster 200 determines that the reception frequency setting of the receiver player having the identification number corresponding to the frequency is completed, Thereby stopping the RDS broadcasting of the FM transmitter. In addition, the processor 220 can transmit the resister player information to which the frequency setting has been completed to the smartphone 100 through the Bluetooth.

In some embodiments, the FM receiver player further includes a light emitting diode, and when the identification number of the demodulated RDS data matches the identification number of the predetermined FM receiver player, it indicates that the reception frequency of the FM receiver is set by the light emitting diode And outputting a signal to be output. In this case, the FM Broadcaster further includes a light receiving sensor, and may stop the RDS broadcasting of the FM transmitter when a signal indicating that the reception frequency outputted from the light emitting diode is set by the light receiving sensor is inputted .

After the setting of the configuration of the speaker system is completed, the user inputs a playback command S120 in the smartphone 100 (S120), and transmits the multi-channel composite audio stream to the broadcaster 200. [ The processor 220 separates the multi-channel composite audio stream transmitted through the Bluetooth 210 into a plurality of single audio channel signals, allocates an FM transmitter for broadcasting the respective audio channel signals, Thereby broadcasting the audio channel signal (S220).

For example, as in the embodiment of FIG. 1, when a 5.0-channel composite audio signal stream is received from the smartphone 100, it is divided into five single audio channel signals FL, FR, C, RL, and RR. In addition, the processor 220 allocates a receiver player corresponding to the separated audio channel signal according to the system configuration set in [Table 1] and [Table 2]. Referring to FIG. 1, Table 1 and Table 2, the processor 220 causes the audio channel signal f1 to be reproduced in the receiver player 300, FL to be broadcast in the FMT 1 281, The audio channel signal f2 to be reproduced in the receiver player 400 (RL) is broadcast in FMT4. The processor 320 of the receiver player 300 controls the amplifier 340 to reproduce the signal received at the set frequency on the speaker 350.

According to the present invention, a user can freely set an audio channel signal reproduced in each of a plurality of receiver players. For example, although the embodiment shown in FIG. 1 configured the system to transmit and receive a 5.0-channel composite audio signal stream, the user may place the receiver player 400 and the receiver player 700 in front, 400 can be set equal to the reception frequency of the receiver player 300 and the reception frequency of the receiver player 700 can be set equal to the reception frequency of the receiver player 400. [

Further, the user can arbitrarily designate a receiver player for separating the multi-channel composite audio signal into a plurality of single audio channel signals and reproducing each separated single audio channel signal using the speaker system according to the present invention. For example, if you play a composite 5-channel audio signal of five different types of musical instrument performance, you can separate it into five single audio channel signals and independently play the five single audio channel signals separated from the five receiver players . Or a 5-channel composite audio signal so that only the recorded channel signal of the instrument desired to be heard can be reproduced in a particular receiver player.

4 and 5 are schematic configuration diagrams of another embodiment of an FM broadcasting speaker system according to the present invention. FIG. 4 illustrates a 2.0 channel speaker system, and FIG. 5 illustrates a 2.1 channel speaker system. The speaker system shown in FIGS. 4 and 5 is different from the speaker system shown in FIG. 1 in that the FM broadcaster 200 includes a speaker. FIG. 6 is a block diagram of the FM Broadcaster 200 shown in FIG. 4 and FIG. Referring to FIG. 6, the broadcaster 200 of the present embodiment includes a Bluetooth 210, a processor 220, a memory 230, an FM transmitter 281, a microphone 250, a digital signal processor 240, 260, and a speaker.

4, the processor 220 of the FM broadcaster 200 receives from the smartphone 100 the identification number of the broadcaster 200 and the receiver player 300, the location information FL and FR, And receives the transmission frequency of the identification number FM transmitter 281 through the Bluetooth 210. The processor 220 causes the FM transmitter 281 to RDS broadcast the identification number of the receiver player at the transmitted transmission frequency. The receiver player 300 scans the reception frequency and sets the reception frequency of the FM receiver when the identification numbers match. The processor 220 processes the stereo channel audio signal in the DSP 240 when the stereo channel audio signal is received by the Bluetooth 210 and separates the audio channel signal corresponding to the designated position (FR or FL) To be reproduced from the speaker. In addition, the processor 220 separates the audio channel signal corresponding to the position of the receiver player 300 in the DSP 240 and broadcasts it through the FM transmitter 281.

100 smartphones
200 FM Broadcaster
210 Bluetooth
220 processor
240 DSP
250 microphone
281 - 285 FM transmitter
300 FM Receiver Player
310 FM receiver
320 processor
340 Amp
350 speakers

Claims (11)

An FM broadcaster including a wireless transceiver and an EF transmitter and configured to process a signal received by the wireless transceiver and output the signal to the EF transmitter;
An FM receiver, and an FM receiver player including a speaker and configured to process a signal received by the FM receiver and output the processed signal to the speaker;
Wherein the signal received by the wireless transceiver includes an identification number of the FM receiver player and broadcast frequency information of the FM transmitter;
The FM broadcaster,
And a controller for receiving the signal including the receiver player identification number and the broadcasting frequency information from the wireless transceiver through the FM transmitter at the broadcasting frequency to modulate RDS data including the identification number of the receiver player into RDS data, ≪ / RTI >
The FM receiver player,
Wherein the mobile station scans the reception frequency at the FM receiver and demodulates the received RDS data when synchronized with the broadcasting frequency of the FM transmitter,
And to set the reception frequency of the FM receiver to the tuned broadcasting frequency when the identification number of the receiver player of the demodulated RDS data matches the preset identification number of the FM receiver player.

The method according to claim 1,
Wherein the FM receiver player is configured to output a sound indicating that the reception frequency of the FM receiver is set by the speaker when the identification number of the demodulated RDS data matches the preset identification number of the FM receiver player;
The FM Broadcaster further includes a microphone,
And to stop RDS broadcasting of the FM transmitter when a sound indicative of a reception frequency setting output from the speaker is input by the microphone. The method according to claim 1,
The FM receiver player further includes a light emitting diode,
And output a signal indicating that the reception frequency of the FM receiver is set to the light emitting diode when the identification number of the demodulated RDS data matches the identification number of the predetermined FM receiver player;
The FM broadcaster further includes a light receiving sensor,
And stop the RDS broadcasting of the FM transmitter when a signal indicating that the reception frequency output from the light emitting diode is set by the light receiving sensor is input. The method according to claim 1,
Wherein the FM broadcaster further comprises a speaker and divides the multi-channel composite audio signal stream received by the wireless transceiver into a plurality of single audio channel signals, and one of the plurality of divided audio audio signals is transmitted to a speaker And outputting the broadcast signal to the FM broadcasting speaker system. An FM broadcaster including a wireless transceiver and a plurality of EF transmitters, the EF broadcaster configured to process a signal received by the wireless transceiver and output the processed signal to the EF transmitter,
An FM receiver and a plurality of FM receiver players including a speaker and configured to process a signal received by the FM receiver and output the processed signal to the speaker;
Wherein the signal received by the wireless transceiver includes identification numbers of the plurality of FM receiver players and broadcast frequency information matched with each of the identification numbers;
Wherein the FM broadcaster is configured to allocate one of the broadcasting frequencies received to each of the plurality of FM transmitters when receiving a signal including broadcast frequency information matched with the identification numbers and identification numbers to the radio transceiver, And configured to RDS data to modulate RDS data, wherein the RDS data includes an identification number matched to a frequency assigned to each of the FM transmitters;
Each of the FM receiver players comprises:
Wherein the EMS receiver scans a reception frequency in the EMS receiver and demodulates the received RDS data when the EMS receiver is tuned to one of the plurality of FM transmitters,
And to set the reception frequency of the FM receiver to a tuned broadcasting frequency when the identification number of the demodulated RDS data matches an identification number of a predetermined FM receiver player. 6. The method of claim 5,
Wherein each of the FM receiver players is configured to output a sound indicating that the reception frequency of the FM receiver is set by the speaker when the identification number of the demodulated RDS data matches the predetermined identification number of the FM receiver player;
The FM Broadcaster further includes a microphone,
And an FM broadcasting unit configured to stop RDS broadcasting of an FM transmitter matched with an FM receiver player outputting the input sound when a sound indicative of a reception frequency setting outputted from the speaker of each FM receiver player is input by the microphone, Speaker system. 6. The method of claim 5,
Each of the FM receiver players further includes a light emitting diode,
And output a signal indicating that the reception frequency of the FM receiver is set to the light emitting diode when the identification number of the demodulated RDS data matches the identification number of the FM receiver player determined in advance;
The FM broadcaster further includes a light receiving sensor,
When a signal indicating that the reception frequency outputted from the light emitting diode of each of the FM receiver players is set by the light receiving sensor is inputted, the RDS broadcasting of the FM transmitter matched with the FM receiver player outputting the input signal is stopped A configured FM broadcasting speaker system. 8. The method according to any one of claims 5 to 7,
Wherein the FM broadcaster divides a multi-channel composite audio signal stream received by the wireless transceiver into a plurality of single audio channel signals, allocates a plurality of divided audio chan- gel signals to the plurality of FM receiver players, And broadcast through an FM transmitter matched to a receiver player. A method for setting a reception frequency of an FM receiver player including an FM receiver and a speaker,
CLAIMS What is claimed is: 1. An FM broadcaster comprising a wireless transceiver and an FM transmitter, the method comprising: receiving a signal comprising an identification number of the speaker and an FM broadcasting frequency information;
Modulating the data including the identification number of the FM receiver player into RDS data and broadcasting RDS through the FM transmitter at the received FM broadcasting frequency in the FM broadcaster,
In the FM receiver player, scanning the frequency such that the reception frequency of the FM receiver is tuned to the broadcasting frequency of the FM transmitter,
Demodulating received RDS data in an FM receiver player when the EF receiver is tuned to the broadcasting frequency of the EF transmitter by frequency scanning,
And setting the receiving frequency of the FM receiver to the tuned broadcasting frequency when the identification number of the demodulated RDS data matches the predetermined identification number of the FM receiver player in the FM receiver player How to set the frequency. 10. The method of claim 9,
The FM Broadcaster further includes a microphone,
Outputting a sound indicating that the reception frequency of the FM receiver is set by the speaker when the identification number of the demodulated RDS data matches the identification number of the FM receiver player determined in advance by the FM receiver player,
Further comprising the step of stopping the RDS broadcasting of the FM transmitter when a sound indicative of a reception frequency setting outputted from the speaker is input by the microphone in the FM broadcaster. 10. The method of claim 9,
The FM receiver player further includes a light emitting diode,
The FM broadcaster further includes a light receiving sensor,
Outputting a signal indicating that the reception frequency of the FM receiver is set to the light emitting diode when the identification number of the demodulated RDS data matches the identification number of the FM receiver player determined in advance by the FM receiver player,
Further comprising the step of stopping the RDS broadcasting of the FM transmitter when a signal indicating that the reception frequency outputted from the light emitting diode is set by the light receiving sensor is input in the FM broadcaster, How to set it up.

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