KR101494181B1 - Apparatus, system and method for receiving broadcasting - Google Patents

Abstract

A broadcast receiving and transmitting apparatus, system and method are provided. The broadcast receiving and transmitting apparatus includes a first receiver for receiving a first broadcast signal and a second receiver for receiving a second broadcast signal different from the first broadcast signal, (N-1) -th channel having the highest priority among the first to n-th channels, when the first to n-th channels are judged to be abnormal, 1 = < a = < n).

Description

[0001] APPARATUS, SYSTEM AND METHOD FOR RECEIVING BROADCASTING [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving and transmitting apparatus, a system and a method, and more particularly, to a broadcast receiving and transmitting apparatus, system and method for receiving two or more broadcast signals.

In the case of a apartment house such as an apartment, a broadcasting receiving and transmitting device for receiving a broadcasting signal and distributing the broadcasting signal to a plurality of households is required. For example, in the case of a cable broadcasting provided by a cable broadcasting service provider, a broadcast receiving and transmitting unit amplifies a broadcasting signal including a plurality of channels input through a cable and distributes the broadcasting signal to a plurality of households.

Meanwhile, there is a need for a disaster broadcast transmitting and receiving apparatus and system capable of quickly and accurately reporting a disaster situation through a broadcast receiving and transmitting apparatus provided for each household when a disaster such as a war, earthquake or tsunami occurs. If only one broadcasting signal is supplied to the apartment, if the transmission path of the broadcasting signal is disconnected in a disaster situation, the apartment can not receive the disaster broadcasting. For example, in a case where a broadcast provided to a dwelling unit is transmitted through a cable, a dwelling unit can not receive a broadcast signal and can not watch a disaster broadcast under a situation where a cable line is disconnected due to occurrence of a disaster situation.

When two broadcast signals transmitted through different paths are supplied to the apartment house, one broadcast signal may be the main broadcast signal and the other broadcast signal may be the auxiliary broadcast signal. In this case, when the main broadcasting signal is disconnected, in supplying the auxiliary broadcasting signal to the apartment house, the main broadcasting signal and the auxiliary broadcasting signal are subjected to channel mapping or a difference in the modulation method of the channels included in each broadcasting signal The auxiliary broadcasting signal may not be smoothly received by each of the households if the auxiliary broadcasting signal is directly transmitted to each of the households in the common house receiving the main broadcasting signal.

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a broadcast receiving and transmitting apparatus capable of smoothly receiving a disaster broadcast even if there is an abnormality in a broadcast signal received through one path.

It is another object of the present invention to provide a broadcast receiving and transmitting system capable of receiving a disaster broadcast smoothly even if there is an abnormality in a broadcast signal received through one path.

It is another object of the present invention to provide a broadcast receiving and transmitting method capable of smoothly receiving a disaster broadcast even if there is an abnormality in a broadcast signal received through one path.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing the same.

According to an aspect of the present invention, there is provided a broadcast receiving and transmitting apparatus including a first receiver for receiving a first broadcast signal and a second receiver for receiving a second broadcast signal different from the first broadcast signal, Wherein the second broadcast signal includes first through n-th channels arranged according to a predetermined priority, and if it is determined that the first broadcast signal has an error, And transmits the fifth broadcast signal including the information of the a-th channel (1 = <a = <n) having the highest priority among the good channels.

According to an aspect of the present invention, there is provided a broadcast receiving and transmitting system including a broadcast receiving and transmitting unit for receiving a first broadcast signal and a second broadcast signal different from the first broadcast signal, And a plurality of broadcast display devices for receiving and displaying the fifth broadcast signal, wherein the second broadcast signal includes first through n-th channels arranged in a predetermined priority order, and the broadcast reception and transmission Wherein the fifth broadcast signal corresponds to the first broadcast signal when the first broadcast signal is not abnormal and the fifth broadcast signal is received during the first through the n-th channels when the first broadcast signal is abnormal And includes information on the channel having the highest priority among the channels with good status.

According to another aspect of the present invention, there is provided a method for receiving and transmitting a broadcast signal, the method comprising: determining whether a first broadcast signal is abnormal; Determining reception states of the first through n-th channels included in the broadcast signal and aligned according to a predetermined priority, determining reception states of the first through n-th channels, And transmits the broadcast signal including the information of the highest priority channel among the first to n-th channels having good reception status.

The details of other embodiments are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

In other words, according to the embodiments of the present invention, it is possible to provide a broadcasting receiving and transmitting apparatus, system, and method for allowing a user to view a disaster broadcast in a multi-user house through another broadcasting signal even if one broadcasting signal is disconnected in a disaster situation .

According to the embodiments of the present invention, even if a broadcast signal is disconnected in a disaster situation and a reception state of a part of channels in a different broadcast signal is not good, broadcast reception And a delivery device, system, and method.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a block diagram of a broadcast receiving and transmitting system according to an embodiment of the present invention.
2 is a block diagram of a broadcast receiving and transmitting apparatus according to an embodiment of the present invention.
3 is a block diagram of a first receiver according to an embodiment of the present invention.
4 is a block diagram of a second receiver according to an embodiment of the present invention.
5 is a block diagram of a first receiver according to another embodiment of the present invention.
6 is a block diagram of a second receiver according to another embodiment of the present invention.
7 is a flowchart showing an embodiment of a broadcast receiving and transmitting method according to the present invention.
8 is a flowchart showing another embodiment of the broadcast receiving and transmitting method of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a block diagram of a broadcast receiving and transmitting system according to an embodiment of the present invention.

Referring to FIG. 1, a broadcast receiving and transmitting system according to an embodiment of the present invention includes a first broadcasting signal 10, a second broadcasting signal 20, a broadcasting receiving and transmitting apparatus 1000, D).

Here, the broadcast signal is a set of one or a plurality of channels transmitted in a common path. For example, a set of a plurality of cable broadcast channels transmitted through one cable line may be one broadcast signal. As another example, a set of terrestrial broadcast channels transmitted through the air and received through a terrestrial antenna may be a broadcast signal. In another example, a set of satellite broadcast channels transmitted from a satellite, transmitted through the air, and received via a satellite antenna may be one broadcast signal.

Channel refers to a signal included in a certain frequency band among broadcast signals. For example, KBS1, KBS2, EBS and MBC of Korean cable broadcasting are included in cable broadcasting signals. The frequency band allocated to each channel may be determined according to a broadcasting standard, and may be arbitrarily determined. When a signal included in each channel is received and demodulated, a group of video, data, or character information can be obtained.

The first broadcast signal 10 may include one or a plurality of channels C1. For example, the first broadcast signal 10 may include a plurality of channels C1 of the first to m-th channels C11 to C1m.

The first broadcast signal 10 is transmitted to the broadcast receiving and transmitting apparatus 1000 through the first path.

The second broadcast signal 20 may include a plurality of channels C2 of the second to second channels C21 to C2n arranged according to a predetermined priority order. The priority order of the second to second channels C21 to C2n is arbitrary and may be independent of the order of the frequency bands of the respective channels. The 2 &lt; th &gt; to 2 &lt; th &gt; channels C21 to C2n may be channels through which a disaster broadcast can be transmitted. The second broadcast signal 20 may further include channels Cx that are not related to the priority other than the 2-1th to 2-2th channels C21 to C2n.

The second broadcast signal 20 is transmitted to the broadcast receiving and transmitting apparatus 1000 through the second path. The second path may be different from the first path. For example, the first path and the second path may be cables input through different circuits, respectively. As another example, the first path may be wired such as cable, and the second path may be wireless, such as terrestrial, satellite, or DMB.

For example, if an error occurs in the first path and the broadcast receiving and transmitting apparatus 1000 normally transmits the first broadcast signal 10 and the second broadcast signal 10, It is possible to receive the second broadcast signal 20 through the second path. Therefore, the broadcast receiving and transmitting apparatus 1000 or the broadcasting display apparatus D can receive a disaster broadcast through a broadcast signal transmitted through another path even if an error occurs in any one of the paths when a disaster occurs. Particularly, if the first path is a wired line such as a cable, the line may be damaged due to a disaster, but the second path takes the radio that does not require a separate line, There is no risk of damage to the passageway. Therefore, the possibility that the second broadcast signal 20 can not be received even in a disaster situation may be less than the possibility that the first broadcast signal 10 can not be received. Therefore, even if the first broadcast signal 10 can not be received, there is a high possibility that the second broadcast signal 20 can receive a disaster broadcast.

The broadcast receiving and transmitting apparatus 1000 receives the first broadcast signal 10 and the second broadcast signal 20 and determines whether there is an abnormality with respect to each signal and / or a reception state of a channel included therein, And a fifth broadcast signal based on the determination result.

More specifically, the broadcast receiving and transmitting apparatus 1000 receives the first broadcast signal 10 and the second broadcast signal 20 and determines whether the first broadcast signal 10 is abnormal have. In addition, the broadcast receiving and transmitting apparatus 1000 can determine the reception state of each of the channels C2 arranged in the predetermined order included in the second broadcast signal 20. [

If it is determined that the first broadcast signal 10 is abnormal, the broadcast receiving and transmitting apparatus 1000 may select a channel having the highest priority among channels C21 to C2n included in the second broadcast signal 20, The fifth broadcast signal 50 may include the information included in the channel. The information included in the channel may be information included in a signal of a frequency band allocated to the channel, or may be information that can be displayed in various forms such as an image and a sound character. Accordingly, when the channel having a high priority is disconnected or the reception state is poor, the fifth broadcast signal 50 includes information included in the channel having the next highest priority, Even if a broadcasting station that produces or broadcasts is destroyed or some channels to which disaster broadcasting is transmitted are disconnected, each household included in the apartment house can receive the disaster broadcasting in a stable manner.

The broadcast receiving and transmitting apparatus 1000 may transmit the fifth broadcast signal 50 information included in the channel having the highest priority among the channels having the better reception status among C21 to C2n included in the second broadcast signal 20 The fifth broadcast signal 50 may include information included in the first broadcast signal 10 if the first broadcast signal 10 is determined not to be abnormal. For example, the fifth broadcast signal 50 may be one that has transmitted the first broadcast signal 10 as it is, or amplified and transmitted. Here, the amplification can be understood as a change in the magnitude of the signal. For example, even if the signal size is small, it can be interpreted as "amplified" if there is a change in size relative to the existing signal.

The information included in the first broadcast signal may be various types of information that can be displayed by an image, a sound character, etc. included in each of the plurality of channels included in the first broadcast signal

The plurality of broadcast display devices D may receive the fifth broadcast signal 50 and display the information included in the broadcast. The plurality of broadcast display devices D may process the fifth broadcast signal 50 and transmit the video signal to a device capable of displaying information. A method of displaying information by receiving a video signal from each of the broadcasting display devices D1 to Dy or a broadcasting receiving and transmitting device does not necessarily need to accompany a video image, have. Each of the broadcast display devices D1 to Dy may be, for example, a television, a set-top box, a monitor, a radio, or the like, but is not limited thereto.

Hereinafter, the broadcast receiving and transmitting apparatus will be described in more detail. 2 is a block diagram of a broadcast receiving and transmitting apparatus according to an embodiment of the present invention. 2, a broadcast receiving and transmitting apparatus 1000 according to an embodiment of the present invention includes a first receiving unit 1100, a second receiving unit 1200, a controller 1300, a transmitting unit 1400, (1500).

The first receiver 1100 receives the first broadcast signal 10 and transmits the third broadcast signal 30. The third broadcast signal 30 may include all information included in the first broadcast signal 10. For example, the first broadcast signal 10 can be transmitted as the third broadcast signal 30 as it is, and the first broadcast signal 10 can be amplified and transmitted as the third broadcast signal 30.

The first receiver 1100 can determine whether the first broadcast signal 10 is abnormal and send the result to the controller 1300.

The second receiving unit 1200 may receive the second broadcasting signal 20 and output the fourth broadcasting signal 40. [ The second receiving unit 1200 may transmit to the control unit 1300 information on the reception states of the second to first-second channels C21 to C2n included in the second broadcast signal 20. [

More detailed contents of the first receiving unit and the second receiving unit will be described with reference to Figs. 3 and 4. Fig. 3 is a block diagram of a first receiver according to an embodiment of the present invention. The first receiving unit 1100 may include a first dividing unit 1110, an amplifying unit 1120, a discrimination converting unit 1130 and a first input determining unit 1140.

The first distribution unit 1110 receives the first broadcast signal 10 and divides it into the first and second broadcast signals 11 and 12. The sizes of the first and second broadcast signals 11 and 12 may be substantially equal to each other, for example, they may not be equal to each other and may have a constant ratio.

The amplifying unit 1120 receives the 1-1 broadcasting signal 11, amplifies the size, and outputs the amplified broadcasting signal 30 as a third broadcasting signal 30. The ratio by which the amplification unit 1120 amplifies the signal may be one or more, but it is not necessarily be one or more, and according to some embodiments, the amplification unit may be omitted.

The discrimination and conversion unit 1130 receives the 1-2 broadcast signal 12 and demodulates the signal of any channel among the channels included in the 1-2 broadcast signal 12 to output the video signal 13 . The video signal 13 does not necessarily mean only a signal related to an image but may include information such as sound, character or data, and may not include information related to an image.

A channel through which the discrimination converter 1130 demodulates and outputs the video signal 13 can be selected by the controller 1300. [ The discrimination and conversion unit 1130 includes a filter for selecting a signal of a specific channel, a frequency conversion unit for converting a signal of a specific channel into a signal of an intermediate frequency band, And a demodulation unit for demodulating the received signal. When the demodulated channel is a modulation (eg, NTSC, PAL, or the like) analog signal in the discrimination and conversion unit 1130, the video signal 13 may be an analog video signal. When the channel demodulated by the discrimination and conversion unit 1130 is a digital channel (e.g., 8VSB, 64QAM, 256QAM, QPSK, OFDM, etc.), the video signal 13 is a digital video signal have.

The first input determination unit 1140 can receive and analyze the video signal 13. The first input discriminator 1140 can analyze the video signal 13 and extract information according to the degree of goodness. For example, when the video signal 13 is an analog video signal, the first input determining unit 1140 may extract information on a signal-to-noise ratio (SNR) and transmit the information to the controller 1300 have. Alternatively, when the signal-to-noise ratio is equal to or greater than the predetermined first reference value, the first input determining unit 1140 determines that the video signal 13 is not abnormal. If the signal-to- It may be determined that there is an abnormality and the information related to the abnormality may be transmitted to the control unit 1300. [ For example, if the video signal 13 is a digital video signal, the first input determination unit 1130 extracts information on a bit error rate (BER) of the video signal 13, Lt; / RTI &gt; Or the first input determining unit 1130 determines that the video signal 13 is not abnormal when the BER is equal to or less than the predetermined second reference value and determines that the video signal 13 is abnormal when the BER is equal to or greater than the second reference value And may transmit information on the information to the control unit 1300. The abnormality of the video signal 13 determined by the first input determining unit 1140 may be identical to whether the first broadcast signal 10 is abnormal.

4 is a block diagram of a second receiver according to an embodiment of the present invention. 4, the second receiver 1200 includes a second distributor 1210, first through n-th converters 1220-1 through 1220-n, a second input discriminator 1230, a re-transformer 1240 ), A first switching unit 1250, and a second switching unit 1260.

The second distribution unit 1210 receives the second broadcast signal 20 and divides the second broadcast signal 21-1 into the second-n broadcast signal 21-n. For example, the sizes of the second-1-th broadcast signal 21-1 to the second-n-th broadcast signal 21-n may be the same.

Each of the first to n-th conversion units 1220-1 to 1220-n receives the 2-1 broadcast signal 21-1 to the 2-n broadcast signal 21-n, The first through n-th video signals 22-1 through 22-n, respectively, by demodulating the signals of the first through n-th channels C21 through C2n. The first to n-th video signals 22-1 to 22-n do not necessarily mean only video-related signals, but may include information such as sound, text or data, have.

Each of the first through n-th conversion units 1220-1 through 1220-n includes a filter for selecting a signal of a specific channel, not shown, a frequency conversion unit for converting a signal of a specific channel into a signal of an intermediate frequency band, And a demodulation unit for generating a video signal from the signal of the frequency band. Each of the first to n-th video signals 22-1 to 22-n includes first through n-th conversion units 1220-1 through 12-n that output first through n-th video signals 22-1 through 22- (NTSC, PAL, and the like), the demodulated channel may be an analog video signal. Each of the first to n-th video signals 22-1 to 22-n includes first through n-th conversion units 1220-1 through 12-n that output first through n-th video signals 22-1 through 22- (E.g., MPEG) when the channel demodulated in each of the channels 1220-n and 1220-n is a digital modulation (e.g., 8VSB, 64QAM, 256QAM, QPSK, OFDM, etc.) channel.

The second input discriminator 1230 can receive and analyze the first through n-th video signals 22-1 through 22-n and output the third video signal 23.

The second input determination unit 1230 analyzes the first through n-th video signals 22-1 through 22-n and extracts information on the degree of goodness. For example, the second input discriminator 1230 may output the arbitrary k-th image signal 22-k (1 = <k = <n) among the first to n-th image signals 22-1 to 22- The signal-to-noise ratio (SNR) of the k-th image signal 22-k may be extracted and transmitted to the controller 1300. Or the second input determining unit 1230 determines that the reception state of the second-k channel (C2k) is good when the signal-to-noise ratio is equal to or greater than the predetermined third reference value, and when the signal- it is determined that the reception state of the k-th channel (C2k) is not good, and information about the k-th channel (C2k) can be transmitted to the controller (1300). For example, if the kth video signal 22-k is a digital video signal, the second input determining unit 1230 may determine the bit error rate (BER) of the kth video signal 22- Information can be extracted and transmitted to the control unit 1300. The second input determining unit 1230 determines that the reception state of the second-k channel C2k is good when the BER is equal to or less than the predetermined fourth reference value, and determines that the second-k channel C2k It is determined that the reception state of the mobile station is not good and the information about the mobile station may be transmitted to the control unit 1300.

The second input discriminator 1230 analyzes the first through n-th video signals 22-1 through 22-n and extracts information on the degree of goodness of the first through n-th video signals 22-1 through 22- To 22-n) may be collectively extracted, and the information may be extracted sequentially from the first video signal 22-1. The second input determination unit 1230 sequentially extracts the information according to the degree of goodness of the first through n-th video signals 22-1 through 22-n from the first video signal 22-1 (K + 1) -th channel C2 (k + 1) having the next priority as compared with the second-k channel, if the reception state of the second-k channel C2k is determined to be good, (K + 1) -th video signal demodulated by the demultiplexer. In this case, the channel having the highest priority among the 2-1 to 2-n channels (C21 to C2n) in the good reception state is the second-k channel.

The third video signal 23 output from the second input discrimination unit 1230 may be substantially the same as the a-th video signal 22-a (where 1 = <a = <n). For example, the third video signal 23 may be the one outputting the a-th video signal 22-a as it is, or the third video signal 23 amplified and outputted. The control unit 1300 can select the a-th video signal 22-a. However, the a-th video signal 22-a includes the second-a channel C2a, which is the highest priority channel among the second-first through the second-n-th channels C21 through C2n, As shown in FIG.

The third video signal 23 may include reception failure information when there is no channel having a good reception state among the second to first to n-th channels C21 to C2n. The reception failure information may include character information, image information, or sound information, which may mean that any one of the 2-1th to 2-nth channels (C21 to C2n) is in a poor reception state.

The reordering unit 1240 receives and modulates the third video signal 23 and outputs the modulated signal 24. The modulation scheme of the modulation signal 24 may be the same as the modulation scheme of the first-b channel C 1 b (1 = <b = <m) corresponding to the second-a channel C 2 a. The first-b channel (C1b) and the second-a channel (C2a) corresponding to each other may be channels that include the same content but are transmitted through different paths. For example, if the second-a channel is the KBS1 channel of the terrestrial broadcasting, the first-b channel may be the KBS1 channel of the cable broadcasting. The re-modulating unit 1240 may modulate the third video signal 23 in the NTSC system if the first-b channel C1b is a channel modulated by the NTSC method. The reordering unit 1240 may modulate the third video signal 23 in the 8VSB mode if the first-b channel C1b is a channel modulated by the 8VSB scheme.

The first switch 1250 receives the modulated signal 24 and outputs the intermediate frequency signal 25. The frequency band or center frequency of the intermediate frequency signal 25 may vary depending on the modulation method of the modulation signal 24. [ For example, if the modulation signal 24 is modulated in the 8VSB scheme, the intermediate frequency signal 25 may include the information that the modulation signal 24 contains and may be a signal having a center frequency of 44 MHz. The information that the modulation signal 24 includes may include video, sound, character, or data information that can be obtained when the modulation signal 24 is demodulated.

The second switching unit 1260 may receive the intermediate frequency signal 25 and output the fourth broadcasting signal 40. The second switching unit 1260 may convert the frequency of the intermediate frequency signal 25 and convert the frequency of the intermediate frequency signal 25 to a signal having the same frequency band as the frequency band of the first-b channel C 1 b. The fourth broadcast signal 40 may include a signal whose frequency is converted into the same frequency band as that of the first-b channel C 1 b by converting the frequency of the intermediate frequency signal 25. For example, the fourth broadcast signal 40 is a signal obtained by converting the frequency of the intermediate frequency signal 25 and converting it to the same frequency band as that of the first-b channel (C1b) It is possible.

The second receiving unit 1200 receives the second broadcasting signal 20 from the second to the n-th channel, which are arranged according to the priority order included in the second broadcasting signal 20 when the first broadcasting signal 10 is abnormal, It is possible to output the fourth broadcast signal 40 including the information of the channel having the highest priority among the channels having good reception status among the channels C21 to C2n. Therefore, when the disaster situation occurs and the first broadcast signal 10 is disconnected and the disaster broadcast can not be received through the first broadcast signal 10, the broadcast receiving and transmitting apparatus 1000 transmits the second broadcast signal 20, Can receive the disaster broadcast. In addition, the broadcast receiving and transmitting apparatus 1000 receives the next priority channel when a part of the channels included in the second broadcast signal 20 is not received due to a disaster situation, It is possible to reliably receive the disaster broadcast in the apartment house even when there is an abnormality in a part of the channels C2 included in the second broadcast signal 20 by outputting the broadcast signal 40. [

In addition, the second receiving unit 1200 includes a signal having the same content, frequency band, and modulation method as the first-b channel (C1b) through the fourth broadcasting signal 40, It is possible to receive the disaster broadcast transmitted through the second-a channel C2a while maintaining the same settings of the broadcast display device D and the time when the first-b channel C1b is watched before.

Referring to FIG. 2, the transmitting unit 1400 receives the third broadcasting signal 30 and the fourth broadcasting signal 40, and transmits the fifth broadcasting signal 50. The fifth broadcast signal 50 may include information included in the third broadcast signal 30 or information included in the fourth broadcast signal 40. For example, the transmitting unit 1400 may transmit either the third broadcasting signal 30 or the fourth broadcasting signal 40 as the fifth broadcasting signal 50, and not transmit the other broadcasting signal 50. The fifth broadcast signal 50 may be used to indicate the information of the first broadcast signal 10 when the sender transmits the third broadcast signal 30 to the fifth broadcast signal 50 and does not transmit the fourth broadcast signal 40 . In the opposite case, the fifth broadcast signal 50 may include the second broadcast signal 20 information. At this time, the information of the second broadcast signal 20 included in the fifth broadcast signal 50 is not information included in all of the second to the second-n channels included in the second broadcast signal 20 And may be information contained in only some of the channels, or may be information contained in only one of the channels.

Referring to FIG. 2, the third input discriminator 1500 may receive the fourth broadcast signal 40 and determine the degree of goodness of the fourth broadcast signal 40. The third input discriminator 1500 may include a second discriminant converter (not shown) capable of receiving and demodulating a signal having the same frequency as that of the second-a channel C2a and outputting a video signal. The third input determining unit 1500 can determine the degree of goodness of the fourth broadcast signal 40 from the video signal output from the second discriminating and converting unit.

Referring to FIG. 2, the controller 1300 may be connected to the first receiver 1100, the second receiver 1200, the transmitter 1400, and the third input determiner 1500.

The control unit 1300 is connected to the first receiving unit 1100 so that the discriminating and converting unit 1130 can control which one of the 1-1 to 1-m channels C11 to C1m to select and demodulate have. The control unit 1300 may also receive information on the degree of goodness of the first broadcast signal 10 extracted by the first input determination unit 1140 and determine whether the first broadcast signal 10 is abnormal.

The controller 1300 may be connected to the second receiver 1200 to control the channels to be demodulated by the first through n-th converters 1220-1 through 1220-n, respectively. The control unit 1300 receives the information on the reception states of the second to first to n-th channels C21 to C2n extracted by the second input determination unit 1230, (C21 to C2n) is good or not. The control unit 1300 receives the demodulated video signal from the second-a channel C2a, which is the channel with the highest priority among the channels of the second to the second-n channels C21 to C2n, 3 video signal 23 as shown in FIG. If the control unit 1300 determines that there is no good channel among the 2-1 to 2-nth channels C21 to C2n, the controller 1300 sets the second video signal 23 to the second The receiving unit 1200 can be controlled. The reception failure information includes character information, image information, or sound information, which may mean that any one of the 2-1th to 2-nth channels C21 to C2n has a poor reception state.

The control unit 1300 is connected to the transmitting unit 1400 and can control the characteristics of the fifth broadcasting signal 50 transmitted from the transmitting unit 1400. For example, when it is determined that there is no abnormality in the first broadcast signal 10, the control unit 1300 transmits the fifth broadcast signal 50 to the transmission unit 1400 so as to include information included in the third broadcast signal 30, And if it is determined that there is an error in the first broadcast signal 10, the fifth broadcast signal 50 may control the transmitting unit 1400 to include information included in the fourth broadcast signal 40 . The fifth broadcast signal 50 includes information included in the first broadcast signal 10 or the fourth broadcast signal 40. For example, when the first broadcast signal 10 or the fourth broadcast signal 40 May be directly outputted as the fifth broadcast signal 50 or the first broadcast signal 10 or the fourth broadcast signal 40 may be amplified and transmitted. When the broadcast receiving and transmitting apparatus 1000 can not receive the first broadcast signal 10 in a disaster situation, it transmits the information included in the second broadcast signal 20 to the fifth broadcast signal 50 , And to be able to receive disaster broadcasting in the apartment complex.

5 is a block diagram of a first receiver according to another embodiment of the present invention.

Referring to FIG. 5, the first receiver 1100 according to another embodiment of the present invention may include a first distributor 1110, an amplifier 1120, and a first input discriminator 1140.

The first input discriminator 1130 may receive the 1-2 broadcast signal 12 and obtain information on the size of the first broadcast signal 10. The first input determining unit 1130 may obtain the information about the size of the first broadcasting signal 10 by measuring the size of the first broadcasting signal 12. The ratio between the size of the first broadcast signal 10 and the size of the first and second broadcast signals 12 and 12 can be kept constant. And information on the size of the first broadcast signal 10 can be obtained by measuring the size of the first broadcast signal 10.

The first input determining unit 1130 determines that the size of the first broadcast signal 10 estimated from the size of the first 1-2 broadcast signal 12 or the size of the 1-2 broadcast signal 12 is smaller than a predetermined reference value It can be determined that there is an error in the first broadcast signal 10 and information on the first broadcast signal 10 can be transmitted to the control unit 1300. The first input determining unit 1130 measures the size of the 1-2 broadcast signal 12 and transmits information on the size of the 1-2 broadcast signal 12 to the control unit 1300, It is possible to determine whether the first broadcast signal 10 is abnormal.

For example, the first input determining unit 1130 may measure the size of the first-second broadcast signal 12, It can be a measure of size. Alternatively, the first input determining unit 1130 may measure the signal of the specific frequency band of the 1-2 broadcast signal 12, or may measure the signal of the specific channel . The first input discrimination unit 1130 may include a filter (not shown) for selecting a signal of a specific frequency band in order to measure the magnitude of a signal of a specific frequency band of the 1-2 broadcast signal 12 Not shown).

In addition, descriptions of components having the same names as those described above are omitted in order to avoid redundant description.

6 is a block diagram of a second receiver according to another embodiment of the present invention.

6, the second receiving unit 1200 according to another embodiment of the present invention includes a first converting unit 1220, a second input determining unit 1230, a reordering unit 1240, a first switching unit 1250 And a second switching unit 1260. The second switching unit 1260 may be a switching unit.

The first converter 1220-1 receives and modulates a second one of the second to the second-n channels C21 to C2n and modulates the second-c channel C2c to generate the first video signal 22-1. Can be output.

The first converter 1220-1 sequentially receives and modulates the 2-1th to the 2-nth channels C21 to C2n and sequentially outputs the 2-1th to the 2-nth channels C21 to C2n, The first video signal 22-1 corresponding to the information included in the first video signal 22-1.

The second input discriminator 1230 can extract information on the reception state of the second to first-second channels C21 to C2n from the first video signal 22-1. A method of extracting information on whether the reception state of the second to n-th channels C21 to C2n is good from the first video signal 22-1 by the second input determination unit 1230 is the same as the method May be as described in the examples.

The first converting unit 1220-1 sequentially receives and modulates the 2-1th to the 2-nth channels C21 to C2n and sequentially outputs the 2-1th to the 2-nth channels C21 to C2n (1 = < c = < n) is good, while outputting the first video signal 22-1 corresponding to the included information, Channel and does not perform reception and modulation on the channel (second (c + 1) th channel), and can continue to receive and modulate the second-c channel. In this case, when the second receiving unit 1200 includes only one converting unit and it is determined that the first broadcasting signal 10 is abnormal due to a disaster, 1 to the second-n channels C21 to C2n through the fifth broadcast signal 50 while the reception state is good and the highest priority channel is received.

In addition, descriptions of components having the same names as those described above are omitted in order to avoid redundant description.

7 is a flowchart showing an embodiment of a broadcast receiving and transmitting method according to the present invention.

Hereinafter, a broadcast receiving and transmitting method according to the present invention will be described with reference to FIG.

According to an embodiment of the broadcast receiving and transmitting method of the present invention, it is determined whether there is an abnormality in the first broadcast signal. (P110) It is determined whether the first broadcast signal is abnormal by measuring the size of the first broadcast signal or by analyzing the video signal extracted from the channel included in the first broadcast signal, as described above .

If it is determined that there is no abnormality in the first broadcast signal, the first broadcast signal is transmitted (P120). The first broadcast signal transmitted may be the same as the first broadcast signal received, Or may be one obtained by amplifying the first broadcast signal. After transmitting the first broadcast signal, it is determined whether the first broadcast signal is abnormal (P110)

If it is determined that there is an error, it is determined whether or not there is an error in the first broadcast signal. (P130) The second to (n-2) th to 1 are channels included in a second broadcast signal transmitted through a path different from the first broadcast signal and are arranged according to a predetermined priority. And the 2 &lt; th &gt; to 2 &lt; n &gt; channels may be channels including disaster broadcast information.

It is determined whether or not there is a channel having a good reception state among the 2-1 to 2-n channels (P140)

It is determined whether or not there is a channel having a good reception status among the 2-1th to 2-n channels. If there is a channel with a good reception status, (P150) Thereafter, it is determined whether there is an abnormality in the first broadcast signal (P110)

If it is determined that there is no channel having a good reception status among the 2-1 to 2-n channels, a broadcast signal including reception failure information is transmitted (P160). Then, It is determined whether there is an abnormality in the broadcast signal (P110)

8 is a flowchart showing another embodiment of the broadcast receiving and transmitting method of the present invention.

Hereinafter, the broadcast receiving and transmitting method of the present invention will be described with reference to FIG.

According to another embodiment of the broadcast receiving and transmitting method of the present invention, it is determined whether there is an abnormality in the first broadcast signal (P210). It is determined that there is an abnormality in the first broadcast signal, The size of the signal may be measured and determined, or the video signal extracted from the channel included in the first broadcast signal may be analyzed and determined.

(P220) The first broadcast signal to be transmitted may be the same as the first broadcast signal to be received, and the first broadcast signal to be received may be the same as the received first broadcast signal, Signal may be amplified. After transmitting the first broadcast signal, it is determined whether the first broadcast signal is abnormal (P210)

It is determined whether there is an abnormality in the first broadcast signal. If it is determined that there is an abnormality, it is determined whether the reception state of the second channel is good. (P230-1). However, the 2 &lt; nd &gt; -1 channel is included in the second broadcast signal transmitted through a different path from the first broadcast signal, and the 2 &lt; It is the highest priority channel.

If it is determined that the reception state of the second channel is good, the broadcast signal including the information of the second channel is transmitted (P240-1). Then, it is determined whether or not the first broadcast signal is abnormal P210)

If it is determined that the reception state of the second-1 channel is not good, it is determined whether the reception state of the second -2 channel is good. (P230-2)

If it is determined that the reception state of the second channel is good, the broadcast signal including the information of the second channel is transmitted (P240-2). Then, it is determined whether there is an error in the first broadcast signal. P210)

If it is determined that the reception state of the second -2 channel is not good, it is determined whether the reception state of the second channel is good.

In this manner, the reception state is sequentially determined according to the priority order of the 2-1th to (2- (n-1) th channels, and if it is determined that the reception state is good, a broadcast signal including information of the channel is transmitted, And determines the reception state of the channel having the next priority if it is determined.

(P230-n). If it is determined that the reception state is not good, the broadcast signal including the reception failure information is transmitted (P250). Then, the first broadcast It is determined whether there is an abnormality in the signal (P210)

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

10: first broadcast signal 11: first broadcast signal
12: 1-2 broadcasting signal 13: video signal
20: second broadcast signal
21-1 to 21-n: 2-1 to 2-n broadcast signals
22-1 to 22-n: first to n-th image signals
23: third video signal 24: modulated signal
25: intermediate frequency signal 30: third broadcast signal
40: fourth broadcast signal 50: fifth broadcast signal
1000: broadcast receiving and transmitting apparatus 1100: first receiving section
1110: first distribution unit 1120: amplification unit
1130: discrimination conversion unit 1140: first input discrimination unit
1200: second receiving unit 1210: second receiving unit
1220-1 to 1220-n: first to n &lt; th &gt;
1230: second input discrimination unit 1240:
1250: first switching unit 1260: second switching unit
1300: control unit 1400:
1500: third input discrimination unit

Claims (20)

A first receiver receiving a first broadcast signal through a first path, the first broadcast signal including a plurality of channels;
The second broadcast signal being different from the first broadcast signal through a second path different from the first path, wherein the second broadcast signal includes first through n-th channels having a predetermined priority, A second receiving unit including a plurality of channels; And
And a transmitting unit for transmitting a fifth broadcasting signal to the broadcasting display device,
Wherein the transmitting unit comprises:
If it is determined that there is no abnormality in the first broadcast signal, transmitting the fifth broadcast signal including the information of the first broadcast signal,
And transmitting the fifth broadcast signal including information of the second broadcast signal if it is determined that the first broadcast signal is abnormal, (1 = < a = < n) of the first to the n-th channels of the second broadcast signal, which are in good reception condition and have the highest priority, Broadcast signal,
Wherein the second receiver converts the received second broadcast signal to have the same frequency band and the same modulation scheme as the frequency bands of the plurality of channels included in the first broadcast signal, A broadcast receiving and transmitting device for allowing a device to perform a broadcast display function while maintaining the setting. The method according to claim 1,
Wherein the first broadcast signal is transmitted to the wire, and the second broadcast signal is transmitted wirelessly. The method according to claim 1,
Wherein the first receiver further comprises a first input discriminator capable of detecting an abnormality of the first broadcast signal. The method of claim 3,
Wherein the first input discriminator is capable of determining whether the first broadcast signal is abnormal according to the size of the first broadcast signal. 5. The method of claim 4,
Wherein the first receiving unit further comprises a discrimination converting unit capable of selecting and demodulating a signal of any one of a plurality of channels included in the first broadcasting signal to output a video signal,
Wherein the first determination unit can determine whether the first broadcast signal is abnormal based on the video signal output from the determination converter. The method according to claim 1,
Wherein the second receiving unit comprises:
A first conversion unit capable of receiving and demodulating any one of the first through n-th channels (1 = <b = <n) and outputting a video signal; And
Further comprising: a second input discrimination unit that can determine a reception state of the b-th channel from the video signal output from the first conversion unit. The method according to claim 1,
Wherein the second receiving unit comprises:
A first through an n-th conversion units receiving and demodulating the first through n-th channels and outputting a video signal, respectively; And
And a second input discriminator capable of determining reception states of the first through n-th channels from the video signals output from the first through the n-th conversion units. The method according to claim 1,
Wherein the second receiving unit further comprises a remodulating unit for receiving and modulating a video signal demodulated from the a-th channel and outputting a modulated signal. 9. The method of claim 8,
The second receiving unit includes a first switching unit for receiving the modulation signal and outputting an intermediate frequency signal; And
And a second switch for receiving the intermediate frequency signal and outputting a fourth broadcast signal. 10. The method of claim 9,
Wherein the fourth broadcast signal has a frequency band equal to a frequency band of a channel corresponding to the a-th channel among a plurality of channels included in the first broadcast signal,
Wherein the fourth broadcast signal has the same modulation scheme as the channel corresponding to the a-th channel among the channels included in the first broadcast signal. The method according to claim 1,
Wherein the transmission unit transmits the fifth broadcast signal including the reception failure information if the first to the n-th channels do not have a channel having a good reception status. 12. The method of claim 11,
Wherein if it is determined that there is no abnormality in the first broadcast signal after it is determined that the first broadcast signal is abnormal, the transmitting unit may transmit the fifth broadcast signal including the information of the first broadcast signal, Receiving and transmitting device. The method according to claim 1,
Wherein the transmitting unit comprises:
Receiving a fourth broadcasting signal including information included in the first broadcasting signal and including third broadcasting signal and a channel information outputted from the first receiving unit and output from the second receiving unit,
If the fifth broadcasting signal includes the information of the third broadcasting signal and does not include the information of the fourth broadcasting signal and if the fifth broadcasting signal includes information of the fourth broadcasting signal, And a broadcast receiving and transmitting device capable of not including information. A first receiver for receiving a first broadcast signal;
A second receiver for receiving a second broadcast signal different from the first broadcast signal; And
And a transmitting unit for transmitting a fifth broadcasting signal to the broadcasting display device,
Wherein the second broadcast signal includes first through n-th channels arranged in a predetermined priority order and a plurality of channels independent of the priority order,
If an abnormality of the first broadcast signal is detected, a reception state of the first channel is first determined,
Wherein the fifth broadcasting signal includes the information of the k-th channel if the reception status of the k-th channel is 1 (k = 1 < k < n) If the reception state of the k-th channel is not good, a channel having the highest priority among the channels having a good reception state is transmitted,
Wherein the second receiving unit converts the received second broadcast signal to have the same frequency band and the same modulation scheme as the frequency band of the channel included in the first broadcast signal and receives the broadcast signal from the transmitting unit And a broadcast display function can be performed while maintaining the same settings. 15. The method of claim 14,
If the reception state of the n-th channel is determined to be good, the fifth broadcasting signal includes information of the n-th channel, and if the reception state of the n-th channel is not good, A broadcast receiving and transmitting apparatus including information A broadcast receiving and transmitting apparatus for receiving a first broadcast signal and a second broadcast signal different from the first broadcast signal and transmitting a fifth broadcast signal;
And a plurality of broadcast display devices for receiving and displaying the fifth broadcast signal from the broadcast receiving and transmitting device,
The broadcast receiving and transmitting apparatus includes:
The method of claim 1, further comprising: receiving the first broadcast signal through a first path, wherein the first broadcast signal includes a plurality of channels,
Wherein the second broadcast signal includes first through n-th channels having a predetermined priority and a plurality of channels irrelevant to the priority, the second broadcast signal being received via a second path different from the first path, and,
If it is determined that there is no abnormality in the first broadcast signal, transmitting the fifth broadcast signal including the information of the first broadcast signal,
And transmitting the fifth broadcast signal including information of the second broadcast signal if it is determined that the first broadcast signal is abnormal, (1 = < a = < n) of the first to the n-th channels of the second broadcast signal, which are in good reception condition and have the highest priority, Broadcast signals are transmitted,
A broadcast display device that converts the received second broadcast signal to have the same frequency band and the same modulation scheme as the frequency band of the channel included in the first broadcast signal and provides the broadcast signal, A broadcast receiving and transmitting system. A method for receiving a first broadcast signal through a first path, the first broadcast signal including a plurality of channels, receiving a second broadcast signal different from the first broadcast signal through a second path different from the first path Wherein the second broadcast signal includes first through n-th channels having a predetermined priority and a plurality of channels independent of the priority,
Determines whether there is an error in the first broadcast signal,
A fifth broadcasting signal including information of the first broadcasting signal is transmitted to the broadcasting display device when it is determined that there is no abnormality in the first broadcasting signal,
And transmitting the fifth broadcasting signal including information of the second broadcasting signal to the broadcasting display device when it is determined that the first broadcasting signal is abnormal,
The transmitting of the fifth broadcasting signal including the information of the second broadcasting signal may include sequentially determining the reception states of the first to the n-th channels of the second broadcasting signal according to the priority order, The fifth broadcasting signal including information of the first to n-th channels of the broadcast signal including the information of the a-th channel (1 = <a = <n) having a good reception state and having the highest priority,
A broadcast display device that converts the received second broadcast signal to have the same frequency band and the same modulation scheme as the frequency band of the channel included in the first broadcast signal and provides the broadcast signal, And transmitting the broadcast data to the mobile station. 18. The method of claim 17,
If it is determined that the first broadcast signal is abnormal and the first to n-th channels of the second broadcast signal have no good channel status, the fifth broadcast signal including the reception failure information is transmitted Further comprising the steps of: It is determined whether there is an abnormality in the first broadcast signal,
If the first broadcast signal has an error, receiving states of first through n-th channels included in a second broadcast signal different from the first broadcast signal and arranged according to a predetermined priority order are given priority over the priorities It is determined whether the reception state of the first channel is high,
And transmitting a broadcasting signal including information of the first channel to a broadcasting display device when it is determined that the reception state of the first channel is good,
Determines a reception state of the second channel if it is determined that the reception state of the first channel is not good,
If it is determined that the reception state of the channel a (1 = < a = < n-1) is good, broadcast signals including the information of the channel a are transmitted to the broadcasting display device,
If it is determined that the reception state of the a-th channel is not good, the reception state of the (a + 1)
Wherein the second broadcast signal further includes a plurality of channels independent of the priority,
The broadcast display device converting the second broadcast signal to have the same frequency band and the same modulation method as the frequency band of the channel included in the first broadcast signal and providing the broadcast signal, The broadcast receiving and transmitting method. 20. The method of claim 19,
And if it is determined that the reception state of the n-th channel is good, transmitting a broadcast signal including information of the n-th channel,
And transmitting the broadcast signal including the reception failure information if it is determined that the reception state of the n-th channel is not good.

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