KR101745662B1

KR101745662B1 - Transceiver and reciever for premises broadcasting

Info

Publication number: KR101745662B1
Application number: KR1020150125858A
Authority: KR
Inventors: 유병원; 정문희
Original assignee: (주)원영전자
Priority date: 2015-09-04
Filing date: 2015-09-04
Publication date: 2017-06-20
Also published as: KR20170028793A

Abstract

The present invention relates to a transmitter and a receiver for an indoor broadcasting.
The present invention relates to a distribution unit for receiving a first speech signal by activating a control channel in a standby state and receiving a first speech signal by activating a specific broadcast channel in a broadcast state, A code selecting unit for storing the unique number, a code signal receiving unit for receiving the code signal from the demodulating unit, comparing the code signal with the unique number stored in the code selecting unit 124, And a reception controller (123) for setting a specific broadcast channel in the distribution unit (121) so as to be activated in response to the result, and setting the control channel in the distribution unit (121) And a transmitter for transmitting a signal to the receiver.

Description

[0001] TRANSCEIVER AND RECEIVER FOR PREMISES BROADCASTING [0002]

The present invention relates to a transmitter and a receiver for an indoor broadcasting.

In buildings such as apartments and buildings, the building code is obliged by the building law to provide broadcasting services such as terrestrial broadcasting, satellite broadcasting, FM / AM radio broadcasting and the like to each household in order to transmit messages.

In order to transmit a voice signal through the local broadcasting network, a speaker to which a voice signal is to be transmitted may be installed at a designated location, and each speaker line may be connected to a broadcasting room in a building to transmit a voice signal to the speaker.

However, if the speaker wires are connected from the speaker to the broadcasting room, the length of the speaker wire becomes very long and complicated. As a result, there is a problem that the time and cost for installing the speakers are greatly increased. Also, there is a problem that it takes a lot of time and cost to repair the speaker line if it is broken.

In addition, broadcasting can be performed using an IP speaker. In the case of using an IP speaker, there is a problem that a server fee is charged and maintenance cost increases.

In addition, a hybrid network-based indoor broadcasting service device supporting audio mixing has been disclosed in Korean Patent Publication No. 10-2012-0111129 (prior patent 1).

In the prior art 1, a plurality of audio signals are converted into digital audio data, and then digital mixing is performed to transmit the digital audio data to a designated audio distributor. Alternatively, the mixed audio data is modulated into IP packets or CATV / ATSC The present invention relates to an apparatus for transmitting a broadcasting service.

However, in the prior art 1, a voice signal can not be selected in the distribution unit, so that different voice signals can not be transmitted for each speaker.

(Prior Patent 1) Korean Publication 10-2012-0111129 (Published October 10, 2012)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transmitter and a receiver for a local broadcasting which can reduce the construction and maintenance costs and can supply a broadcast simply and provide a voice transmission function individually or in groups with each subscriber.

The first embodiment of the present invention is connected to the local area network 110 and receives and distributes a first audio signal from the local area network 110. In a standby state, Receiving a first audio signal from a distribution unit for receiving a first audio signal by activating a specific broadcast channel in a broadcast state, distinguishing a code signal included in the first audio signal from a second audio signal, A code selection unit for receiving the code signal from the demodulation unit and comparing the received code signal with the unique number stored in the code selection unit, selecting a specific broadcast channel corresponding to the comparison result, And sets the control channel to be active in the distribution unit when the broadcast is terminated. The second control unit receives a second audio signal transmitted corresponding to the selected broadcast channel And an amplifier for amplifying a second audio signal output from the output controller.

The second embodiment of the present invention relates to a broadcast apparatus for generating a code signal and setting a sound source for each channel in accordance with a code signal and a broadcast apparatus connected to an on-premise broadcast network and receiving a code signal from the broadcast apparatus, And a transmitter for receiving a voice signal from a sound source in a broadcasting mode and receiving a voice signal from a sound source set for each channel to transmit a voice signal for each channel.

According to the transmitter and receiver for the broadcasting according to the present invention, a voice signal and a video signal can be provided to the receiver without the need of providing a separate speaker line. Therefore, it is easy to install and repair. In addition, unlike IP broadcasting, the server fee is not paid, so the maintenance cost can be reduced.

In addition, each subscriber can be provided with a separate code to selectively receive voice broadcasts of a desired recipient, and can broadcast an evacuation route or a corresponding method previously stored in a disaster, individually or in groups. Accordingly, when a disaster occurs, it is possible to send voice broadcasts individually or in groups instead of collective voice broadcasts, so that viewers or listeners can more effectively respond to disasters.

FIG. 1 is a structural diagram showing an embodiment of a broadcasting system according to the present invention.
2 is a structural diagram showing a first embodiment of the receiver shown in Fig.
3 is a perspective view showing a second embodiment of the receiver shown in Fig.
4 is a structural view showing a first embodiment of the radiator shown in Fig.
5 is a conceptual diagram showing an embodiment of the control code.
6 is a conceptual diagram showing an embodiment of a code for specifying a channel.
7 is a conceptual diagram showing an embodiment of a broadcast end code.
8 is a flowchart showing an operation of the broadcasting system shown in FIG.

The objects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the lifespan.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In this specification, the terms first, second, etc. are used to distinguish one element from another element, and the element is not limited by these terms.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

FIG. 1 is a structural diagram showing an embodiment of a broadcasting system according to the present invention.

Referring to FIG. 1, an internal broadcasting system 100 includes an indoor network 110, a receiver 120, and a broadcast transmitter 130.

The broadcasting network 110 is required to be installed in the building so that it can be viewed or listened to within the building. The broadcasting network 110 can embed a wired cable in the building so that broadcasting signals can be supplied to a classroom, a lecture room,

The receiver 120 can receive and output a broadcast signal including a video signal and a voice signal, which are installed in a designated place such as a classroom, a lecture room, an office, and the like in a building and are transmitted from the broadcast transmitter 130 through the on- have. The receiver 120 is connected to the television 150 and the speaker 160, thereby allowing the user to view or listen to the broadcast. The receiver 120 may be installed in one location or more and may be embedded in a wall. Here, the place where the receiver 120 is installed is described as a classroom, a lecture room, and an office, but the present invention is not limited thereto. In addition, the speaker 160 may be an internal speaker installed in the receiver 120 and an external speaker connected to the receiver 120. The number of speakers 160 connected to one receiver 120 may be plural.

The broadcasting transmitter 130 may be installed in a broadcasting room for managing the broadcasting system 100 to transmit broadcasting signals. The broadcast signal includes a video signal and a voice signal. The broadcasting transmitter 130 includes a broadcasting device 130a and a transmitter 130b. The broadcasting device 130a can control the transmitter 130b and generate a broadcasting signal. The transmitter 130b transmits the broadcasting signal to the broadcasting network 110 to a receiver 120 installed in a classroom, a lecture room, an office, or the like so as to view or listen to a broadcast at a designated location. More specifically, the broadcasting apparatus 130a includes a receiving apparatus for receiving an externally transmitted terrestrial broadcast, a satellite broadcast, and an FM / AM radio broadcast, and a terrestrial broadcast receiver for generating a DVD player, Blu- , A PC for editing satellite broadcasts and generating new broadcast contents. Also, the broadcasting apparatus 130a receives terrestrial broadcasting, satellite broadcasting, and FM / AM radio broadcasting through an antenna 140. [ The radiator 130b receives the broadcast content received from the receiving apparatus of the broadcasting apparatus 130a or the broadcasting contents generated by the PC or the like as a plurality of sound sources and / or video signals, and outputs the sound source and / And transmits the video signal to the receiver 120 through the intra-city broadcasting network 110.

The video signal transmitted from the general public broadcasting network 110 can receive a specific broadcast by selecting a channel on a television or the like but the audio signal transmitted through the speaker 160 can be transmitted to the broadcasting transmitter 130 through the speaker 160 individually The broadcast transmitter 130 and the speaker 160 must be directly connected to each other via wires. However, when at least one speaker is installed in each place, assuming that there are 10 places such as a classroom, a lecture room, and an office, at least 20 lines are required to be connected to each speaker (160) to the radiator (130). In addition, depending on the location of the speaker 160 and the location of the broadcasting room, the line of the speaker 160 may be very long. Therefore, it may take a lot of time and cost to install and maintain a speaker for broadcasting.

However, instead of using a separate line from the broadcasting transmitter 130 to the speaker 160, it is possible to transmit a voice signal to the receiver 120 through the broadcasting network 110, so that the broadcasting signal from the broadcasting transmitter 130 to the speaker 160 It is not necessary to separately connect the speaker 160 to the receiver 120. Therefore, it is not necessary to extend the line of the speaker 160. [ Therefore, the cost and time required for installation and maintenance can be saved. In addition, when the receiver 120 receives a voice signal by selecting a channel, it can select and listen to a voice signal transmitted through a specific channel.

In addition, the broadcast transmitter 130 may provide an individual code to each subscriber to selectively deliver the voice broadcast to a desired recipient, and may also broadcast an evacuation path and a corresponding method previously stored in the subscriber or group when a disaster occurs do. Accordingly, when a disaster occurs, it is possible to transmit voice broadcasts individually or in groups instead of collective voice broadcasts, so that a viewer or listener can more effectively respond to a disaster.

2 is a structural diagram showing a first embodiment of the receiver shown in Fig.

2, the receiver 120 is connected to the local area network 110, receives and distributes a first audio signal from the indoor network 110, and activates a control channel in a standby state to output a first audio signal A distribution unit 121 for receiving a first voice signal by activating a specific broadcast channel in a broadcast state, a code signal receiving unit for receiving a first voice signal from the distribution unit 121 and receiving a code signal included in the first voice signal, A code selection unit 124 for storing a unique number set in the receiver 120, a code selection unit 124 for receiving a code signal from the demodulation unit 122, And sets the selected broadcast channel in the distribution unit 121 to be activated in response to the comparison result and sets the control channel to be active in the distribution unit 121 when the broadcast is completed, (123), for the selected broadcast channel And an output controller 125, and the output control section 125, amplifying section 126 for amplifying a second audio signal outputted from the transmission received to output a second audio signal to be transmitted. Also, the distribution unit 121 receives the video signal through the indoor network 110 and transmits the received video signal to the television 150.

The distribution unit 121 divides a signal, which is connected to the local area network 110 and transmitted through the local area network 110, into a video signal and a first audio signal. When the control channel is activated, the first audio signal may include only the control signal. The video signal is transmitted to the television through the first terminal and the audio signal is transmitted to the demodulating unit 122 through the second terminal. Here, the first terminal may be an F connector that can be connected to the television 150. However, the present invention is not limited thereto. The video signal and the first audio signal are digital signals, and the first audio signal includes a second audio signal including information on audio and a code signal including information on the code. In the waiting state before receiving the broadcast, the distribution unit 121 activates the control channel under the control of the reception control unit 123 to receive the first voice signal through the control channel among the plurality of channels. In the broadcast state, the distribution unit 121 receives the first audio signal transmitted from the broadcast transmitter 130 through the selected broadcast channel selected by the reception control unit 123 and the selected broadcast channel.

The demodulation unit 122 receives the first speech signal from the distribution unit 121, and divides the received second speech signal into a second speech signal and a code signal. The demodulator 122 demodulates the second audio signal, converts it into an analog signal, and transmits the analog signal to the output controller 125. Also, the demodulation unit 122 transmits the code signal to the reception control unit (). The code signal includes a control code, a broadcast end code, and a channel designation code. The code signal will be described in more detail in the following description of Figs. 5 to 7.

The code selection unit 124 stores the unique number set in the receiver 120. [ The unique number may be a number set by the manufacturer of the receiver 120 and may be a number set by the administrator operating the broadcasting apparatus. In addition, the unique code can correspond to the individual code assigned to the subscriber, and the individual code assigned to the subscriber can be used to identify the subscriber in the disaster occurrence area in case of a disaster, Can be done.

The reception control unit 123 receives the code signal from the demodulation unit 122 and determines whether the receiver is a receiver for receiving the first audio signal. In addition, the reception control unit 123 activates a specific broadcast channel in the distribution unit 121 when it is determined by the code signal that the receiver is to receive the first audio signal. The code signal includes information about the receiver 120 to receive the first speech signal and channel information. The reception control unit 123 compares the information on the receiver 120 with the unique number to determine whether the receiver 120 is to receive the first audio signal. If the receiver is to receive the first audio signal, it can select a first audio signal transmitted from a specific sound source of the broadcast transmitter 130 by activating a specific broadcast channel based on the channel information included in the code signal.

The output control unit 125 transmits the second audio signal received from the demodulation unit to the amplification unit 126. The output control unit 125 may include a plurality of filters and a filter corresponding to the broadcast channel selected by the switching operation is selected and transmits the second voice signal to the amplification unit 126 through the selected filter.

The amplifying unit 126 can amplify and output the second audio signal. The amplifying unit 126 may output the amplified second audio signal to the speaker 160a. The speaker 160 may include an internal speaker 160a and an external speaker 160b and the external speaker 160b may be connected to the amplifier 126 through an external speaker terminal of the amplifier 126 have. The external speaker terminals in the amplification unit 126 may be plural.

In addition, the receiver 120 may further include a level detector 127. The level detector 127 detects the intensity of the second audio signal output from the amplifier 126. If the intensity of the second audio signal is smaller than the preset size, the level detector 127 generates a broadcast end signal and transmits the signal to the reception controller 123. The level detector 127 may generate a broadcast end signal if the intensity of the second voice signal is less than a preset size for a predetermined time.

3 is a perspective view showing a second embodiment of the receiver shown in Fig.

3, the receiver 120b may be installed on a wall surface of a building or the like. The receiver 120b may include a distribution unit 121, a demodulation unit 122, a reception control unit 123, An output control section 125, and an amplification section 126 are disposed. A level detector 127 may be disposed on the substrate 310. A DC input / output terminal 315, an internal speaker 313, and an external speaker terminal 314 may be disposed on the substrate 310. A cover 320 is placed on the substrate 310 and a cover 320 is connected to the output control unit 125 and includes a channel selection switch 311 for selecting a channel and transmitting the selected channel information to the output control unit 125, The F connector 312, the DC input / output terminal 315, the internal speaker 313, and the external speaker terminal 314 formed on the display unit 121. However, the present invention is not limited thereto.

Accordingly, the receiver 120 can be connected to the television 150 via the F connector 312 to send the video signal to the television 150, and can supply power to the external device through the DC input / output terminal 315 . Also, the receiver 120 may be supplied with power from an external device through the DC input / output terminal 315. However, the present invention is not limited thereto.

And may be connected to an external speaker via an external speaker terminal 314. [ Here, although the external speaker terminal 314 is shown as being one, it is not limited thereto.

Here, the perspective view of the receiver 120 is merely exemplary and the shape of the receiver 120 is not limited thereto.

4 is a structural diagram showing a first embodiment of the broadcast transmitter shown in FIG.

4, the broadcast transmitter 130 includes a broadcasting device 130a and a transmitter 130b connected to the broadcasting network 110 and transmitting a video signal and a voice signal.

The broadcasting device 130a senses a broadcast signal transmitted from the outside through the antenna 140 and transmits the detected signal to the radiator 130b. Also, the broadcasting device 130a transmits the self-produced broadcasting signal to the transmitter 130b. The broadcasting device 130a provides the video signal 134 and / or the sound source 135 with a signal sensed by the antenna 140 and / or broadcast content produced in-house by the broadcasting device 130a. Also, the broadcasting apparatus 130a provides a GUI (Graphic User Interface), and the broadcasting apparatus 130a is operated through the GUI. Then, the broadcasting device 130a generates a code signal and transmits it to the radiator 130b. The code signal includes a control code, a channel designation code, and a broadcast end code. Also, the broadcasting apparatus 130a can transmit a code signal to the radiator 120 using an RS-232 port.

The transmitter 130b transmits voice signals through the control channel and a plurality of broadcast channels. The transmitter 130b transmits a code signal to the receiver 120 through the on-premises broadcasting network 110 using a control channel in a standby state. The code signal transmitted through the control channel in the standby state is a control code and a channel designation code. In addition, the transmitter 130b outputs a first voice signal received from a plurality of sound sources 135 through a broadcast channel in a broadcast state. The broadcast channel is set for each sound source and transmits a sound signal output from the sound source to the receiver 120. In addition, the transmitter 130b outputs a code for terminating the broadcasting of the code signal through the broadcasting channel at the end of broadcasting. Then, the transmitter 130 may repeat the code signal two or three times and transmit it to the receiver 120.

The transmitter 130 includes a video signal transmitter 131 for outputting a video signal, a voice signal transmitter 132 for outputting a voice signal transmitted from the sound sources 135, And transmits the video signal and audio signal output from the video signal transmitting unit 131 and the audio signal transmitting unit 132 to the plurality of receivers 120 distinguished by the unique numbers stored in the code selecting unit 124 And a combining unit 133. [

The video signal transmitting unit 131 receives the video signal 134 from the broadcasting device 130a and transmits it. The video signal 134 may be a broadcast signal such as a terrestrial wave or a satellite broadcast. In addition, the video signal 134 may be a video signal generated by a PC, a DVD player, a Blu-ray player, a camera, etc., connected to a PC, a DVD player, a Blu-ray player, The video signal transmitting unit 131 compresses the video signal, converts the video signal into a broadcasting video signal compliant with the broadcasting standard, and outputs the broadcasting video signal to the combining unit 133. The image signal transmitting unit 131 may include an image compressing unit 131a for compressing the image signal and a terrestrial wave modulating unit 131b for converting the image compressing unit 131a into a broadcasting signal compliant with the broadcasting standard. Accordingly, the video signal transmitting unit 131 compresses the video signal in the video compressing unit 131a, converts the video signal into a broadcasting video signal compliant with the broadcasting standard in the terrestrial wave modulating unit 131b, and outputs the broadcasting video signal to the combining unit 133 .

The voice signal transmitting unit 132 transmits voice signals corresponding to the plurality of sound sources 135. The plurality of sound sources 135 may be a radio, a CD player, a microphone, a DVD player, or a Blu-ray player. In addition, the plurality of sound sources 135 may include a device such as a PC, and the PC may edit a voice signal output from a radio, a CD player, a microphone, a DVD player, a Blu-ray player, or the like to produce new broadcast content. Also, the broadcasting apparatus 130a for controlling the sending unit 130b may also be one of the plurality of sound sources 135. In addition, the microphone for transmitting the announcement may also be one of the plurality of sound sources 135.

The voice signal transmitting unit 132 can select at least one voice signal corresponding to the sound source output from the voice signal device 135. [ To this end, the audio signal transmitting unit 132 may include a sound source selecting unit 132a. In the sound source selecting unit 132a, at least one of the plurality of sound sources 135 is selected and a sound signal output from the selected sound source Output. In addition, the voice signal transmitting unit 132 can modulate the selected voice signal. Modulation of a voice signal converts an analog signal into a digital signal and adapts it to a broadcasting standard. In addition, the voice signal transmitting unit 132 outputs the voice signal to the combining unit 133 in accordance with the broadcasting standard. The audio signal transmitting unit 132 includes an audio modulator 132b for modulating the audio signal selected by the sound source selector 132a and an audio modulator 132 for receiving the code signal generated by the broadcasting device 130a And a transmission control unit 132c for transmitting the transmission control information.

The control code among the code signals is implemented as shown in FIG. 5, the control code 500 includes a unique code 510, a receiving end code 520, and a sound source selection code 530. [ The inherent code 510 is used to determine whether the code signal transmitted from the radiator 130b is a control code 500 or not. The inherent code 510 may be set to a code preset by the administrator. The receiving end code 520 includes information on the receiver 120 for the receivers 120 and determines whether or not the receiver 120 is a signal to be received by the code recorded in the receiving end code 520 do. The information about the receivers 120 can be a unique number assigned at the time of manufacturing the receiver 120. [ Also, a code given by a DIP switch (not shown) in the receiver 120 or a code given by a separate code input device (not shown) can be used. In addition, the manager of the broadcast transmitter 130 can arbitrarily set the receiver code 120 according to the position where the receiver 120 is installed. For example, when an in-house broadcasting system is installed in an apartment, a manager arbitrarily sets a receiving terminal code 520 corresponding to a receiver installed in the apartment No. 101 of the apartment to 11111, and a receiving terminal Code 520 may optionally be set to 11112. [ The sound source selection code 530 includes information on a channel set for each sound source and enables a channel set for each sound source to be known through a code recorded in the sound source selection code 530. The receiver 120 selects a channel using the code recorded in the sound source selection code 530 and receives a voice signal from a specific sound source. The sound source selection code 530 records a code corresponding to the information about the selected sound source. For example, the sound source selection code 530 includes 001 and 010, and informs 001 that the first sound source is transmitted to the first one of the plurality of broadcast channels, and 010 allows the second sound source to transmit 2 channel is set. When the listener sets the channel of the receiver 120 to the first channel, the second channel, or the like using the sound source selection code 530, the sound sources to be heard are selected according to the set channel.

The broadcast transmitter 130 may set the entire broadcast mode to allow the receiver 120 connected to the local area network 110 to receive the same broadcast. The entire broadcast mode is used to announce the start / end of the lesson, the announcement of the situation in the building, and so on. In the full broadcast mode, it takes a long time to designate a sound source when one sound source is assigned to all the receivers. In order to solve such a problem, a specific code is written in the receiving end code 520 of the control code 500, and if the specific code is recorded in the receiving end code, the sound selecting code (all receivers can select a specific sound source).

In addition, the broadcasting apparatus 130a transmits a channel designation code for allowing the channel of each receiver 120 to be changed. When there is no noise at the time of installation of the receiver 120, the broadcasting apparatus 130a changes the frequency of the channel through which the sound source is transmitted through the channel designation code and transmits the sound source through the frequency of the changed channel . The code for specifying the channel is implemented as shown in FIG. That is, the channel designation code 600 further includes a channel frequency selection code 640 in addition to the inherent code 610, the receiving end code 620, and the sound source selection code 630, The receiver 120 changes the frequency of the broadcast channel through which the sound source is transmitted.

The broadcast apparatus 130 generates a broadcast end code at the end of broadcast and transmits the broadcast end code to the on-premise broadcast network 110 through the transmitter 130b. The broadcast end code is implemented as shown in FIG. The broadcast end code 700 includes a unique code 710, a receive end code 720, and a broadcast end code 730. The receiver 120 separates the second voice signal and the code 700 for termination from the demodulation unit 122 and transmits the code 700 for termination to the reception control unit 123. When the reception control unit 123 receives the broadcast end code 700, The broadcast end code 720 is used to determine whether the broadcast is finished. The broadcast apparatus 130 selects the termination of broadcasting through the GUI and generates a termination code 700 when the termination of the termination is selected. Also, when the audio signal is not output from the microphone for a preset time and / or when the audio signal is not output for a preset time, the broadcasting apparatus 130 generates the broadcasting termination code 700 and transmits the code 120). The control code 500 and the channel frequency change code 600 are transmitted through the control channel but the broadcast end code 700 is transmitted from the sound source to the broadcast end code 700).

The combining unit 133 transmits the video signal output from the video signal transmitting unit 131 and the video signal and the audio signal output from the audio signal transmitting unit 131 to the intra-city broadcasting network 110.

8 is a flowchart showing an operation of the broadcasting system shown in FIG.

Referring to FIG. 8, the receiver 120 and the broadcast transmitter 130 are set in a standby state in the broadcasting system 100 (S800). In the standby state, the broadcasting transmitter 130 is set to transmit signals through the control channel, and the receiver 120 is activated in the control channel. The broadcast transmitter 130 receives the control code generated in the broadcasting apparatus 130a and transmits the control code to the receiver 120 through the broadcasting network 110 using the control channel so that the receiver 120 Control code is received. Then, the receiver 120 determines whether the received signal is a control code using a unique code included in the control code. When the confirmation is completed, the receiver 120 confirms whether or not it is the receiving end code corresponding to the receiver 120 itself through the receiving end code included in the control code. At this time, the receiver 120 checks whether the receiving end code is a specific code for the entire broadcasting mode in the entire broadcasting mode. Then, the receiver 120 detects a sound source code corresponding to the sound source by the sound source selection code if the receiving end code matches the code set in the receiver.

Then, the broadcast mode is performed (S810). In the broadcast mode, the receiver 120 can change the channel according to the tone generator code recorded in the tone generator selection code, and receive broadcasts transmitted from the broadcast transmitter 130 on a channel-by-channel basis. Also, if the receiving end code is a specific mode corresponding to the entire broadcasting mode, the receiver 120 allows a specific sound source to be selected. The receiver 120 receives the voice signal generated from the sound source through the broadcast channel, and outputs the broadcast signal.

When the broadcast is finished (S820), the broadcast device 130 generates a broadcast end code for ending broadcast. The broadcast end code is included in the voice signal transmitted by the sound sources 135 and transmitted to the receiver 120 through the broadcast channel. When the receiver 120 receives the broadcast end code transmitted through the sound source, the receiver 120 blocks the broadcast. At this time, when the broadcast is completed, the receiver 120 sets the channel of the receiver as a control channel and becomes a standby state. Also, the receiver 120 continuously detects a voice signal for a predetermined time, and if the strength of the voice signal is lower than a predetermined level, it determines that the broadcast is terminated, sets the channel of the receiver 120 as a control channel, . The receiver 120 detects the strength of the voice signal by the level detection unit 127. [

The functions of the various elements shown in the drawings of the present invention may be provided through use of dedicated hardware as well as hardware capable of executing software in association with appropriate software. When provided by a processor, such functionality may be provided by a single dedicated processor, a single shared processor, or a plurality of individual processors, some of which may be shared.

In the claims hereof, the elements depicted as means for performing a particular function encompass any way of performing a particular function, such elements being intended to encompass a combination of circuit elements that perform a particular function, Microcode, etc., coupled with suitable circuitry to perform the software for the computer system 100. The computer system 100 may include any type of software, including firmware, microcode, etc.,

Reference throughout this specification to " one embodiment ", etc. of the principles of the invention, and the like, as well as various modifications of such expression, are intended to be within the spirit and scope of the appended claims, it means. Thus, the appearances of the phrase " in one embodiment " and any other variation disclosed throughout this specification are not necessarily all referring to the same embodiment.

It will be understood that the term " connected " or " connecting ", and the like, as used in the present specification are intended to include either direct connection with other components or indirect connection with other components. Also, the singular forms in this specification include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations, and elements referred to in the specification as " comprises " or " comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

100: Local broadcasting system 110: Local broadcasting network
120: receiver 130: broadcast transmitter
140: antenna

Claims

The cable network 110 and the wired K
And receives a first audio signal including a video signal, a code signal, and a second audio signal from the broadcasting network 110 according to a digital broadcasting standard, and distributes the video signal and the first audio signal, A distribution unit 121 receiving a first voice signal by activating a control channel in a standby state and activating a specific broadcast channel in a broadcast state to receive a first voice signal;
A demodulation unit 122 for receiving the first audio signal from the distribution unit 121 to distinguish a code signal included in the first audio signal from a second audio signal and outputting the second audio signal as an analog signal, ;
A code selector (124) for storing a predetermined unique number for each receiver;
Receives the code signal from the demodulation unit 122, compares the received code signal with the unique number stored in the code selection unit 124, selects the specific broadcast channel in the distribution unit 121 according to the comparison result, A reception controller (123) for setting the control channel to be activated in the distribution unit (121) when the broadcast ends;
An output controller (125) having a plurality of filters for receiving and outputting the second audio signal transmitted corresponding to the selected specific broadcast channel; And
And an amplifier 126 for amplifying the second audio signal output from the output controller 125,
Wherein the code signal includes a control code for identifying a receiver and selecting a specific sound source and a channel, or a broadcast end code for indicating whether a broadcast is ended,
Here, the control code includes a unique code, a receiving end code, and a sound source selection code and is received through the control channel, and the unique code is used to determine whether the unique code is a control code or a broadcast end code, Wherein the sound source selection code includes information on a channel set for each sound source,
Here, the broadcast end code includes a unique code, a receive end code, and a broadcast end code, is received through the broadcast channel, and the reception control unit 123 determines whether the broadcast end code is to be terminated based on the broadcast end code receiving set.

The method according to claim 1,
The distribution unit 121 includes a first terminal that outputs a video signal and is connected to a television, and the distribution unit 121 receives the video signal through the intra-city broadcasting network and outputs the video signal through the first terminal. .

The method according to claim 1,
And a level detector 127 for detecting the intensity of the second audio signal output from the amplifier 126 and transmitting the detected result to the reception controller 123, A receiver comprising a speaker and an external speaker terminal.

The method according to claim 1,
Wherein the code signal includes a code for specifying a channel,
The channel designation code includes a unique code, a receiving end code, a sound source selection code, and a channel frequency selection code, and uses the frequency information obtained through the channel frequency selection code to change a frequency of a channel through which the sound source is transmitted &Lt; / RTI >

A broadcast device 130a for generating a preset code signal for each receiver and setting a sound source 135 for each channel corresponding to the code signal; And
And receives the code signal from the broadcasting device 130a and transmits the code signal in a standby state through the internal broadcasting network 110 in a broadcast mode, And a transmitter 130b receiving the voice signal from the sound source 135 and receiving the voice signal from the sound source set for each channel and transmitting the voice signal for each channel,
The transmitter 130b includes a video signal transmitting unit 131 for outputting a video signal, and a voice signal transmitting unit 132 for converting the voice source to output a voice signal, and for giving and receiving the code signal to the voice signal And a combining unit (133) for combining the video signal output from the video signal transmitting unit and the voice signal transmitted from the voice signal transmitting unit,
The voice signal transmitting unit 132 includes a transmission control unit 132c for receiving the code signal from the broadcasting device, a voice signal receiving unit 132c for receiving the voice signal from the voice source and receiving the code signal from the transmission control unit 132c, An audio modulator 132b for modulating the code signal according to a digital broadcasting standard, and a sound source selector 132a for selecting a specific sound source,
Here, the code signal may include a control code for identifying a receiver and selecting a specific sound source and a channel, or a code for specifying a broadcast end or a channel designation code for changing a channel,
Wherein the control code includes a unique code, a receiving end code, and a sound source selection code, the unique code is used for determining whether it is a control code or a broadcast end code, the receiving end code includes information about a receiver, Includes information on a channel set for each sound source,
The channel designation code includes a unique code, a receiving end code, a sound source selection code, and a channel frequency selection code, and uses the frequency information obtained through the channel frequency selection code to change a frequency of a channel through which the sound source is transmitted and,
Wherein the broadcast end code includes a unique code, a receive end code, and a broadcast end code, and the reception control unit 123 determines whether the broadcast end code is terminated by the broadcast end code.

delete