KR20210087214A - Electronic apparatus and the method thereof - Google Patents

Abstract

The present invention relates to an electronic device allowing even electronic devices not using a specific broadcasting standard to use a broadcasting service according to the corresponding standard and a control method thereof. According to one embodiment of the present invention, the electronic device comprises: an interface unit; and a processor requesting and receiving service information on broadcast content, which can be provided through network communication among broadcast contents provided according to a predetermined broadcast standard, to an external device connected through the network communication via the interface unit, obtaining information of a plurality of channels which can be provided through the network communication from the received service information, identifying source information associated with a channel selected according to a user input among the plurality of channels on the basis of the service information, receiving content data of the selected channel through the interface unit by using the identified source information, and displaying the received content data on a display.

Description

Electronic device and its control method

The present invention relates to an electronic device that processes to provide a broadcast service and a method for controlling the same.

In order to provide a broadcast service, the electronic device must have a broadcast standard suitable for the type of broadcast signal. That is, when the electronic device does not have a tuner for receiving a broadcast signal to be provided with a broadcast service, the corresponding broadcast signal cannot be received.

For example, ATSC (Advanced Television Systems Committee) 3.0, which has recently been drawing attention as a next-generation digital broadcasting standard, provides various network-linked services in addition to broadcast, high-definition video, and immersive audio that provide high data rates. It is a standard that can provide both broadcasting services through convergence with broadband. Among them, information including SLT (Service List Table), which is broadcast service information required to provide broadcast content on TV, is ATSC 3.0 that supports ATSC 3.0 Physical Layer, even though broadcast content through broadband is transmitted by DASH protocol through network. It can be received through the tuner. Accordingly, there is a problem in that a device without an ATSC 3.0 tuner cannot watch ATSC 3.0 broadband broadcasts.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic device that provides a broadcast service according to a corresponding standard even in an electronic device other than a specific broadcast standard, and a control method thereof.

In an electronic device according to an embodiment of the present invention, an interface unit; and requesting and receiving service information on broadcast contents that can be provided through network communication among broadcast contents provided according to a predetermined broadcasting standard to an external device connected through network communication through the interface unit, and from the received service information through network communication Acquire information on a plurality of available channels, identify source information associated with a channel selected according to a user input among the plurality of channels based on the service information, and use the identified source information through the interface unit It may include a processor that receives content data of the selected channel and controls the received content data to be displayed on a display.

The electronic device according to an embodiment of the present invention further includes a storage unit, wherein the processor stores the acquired information on the plurality of channels and source information associated with the plurality of channels in the storage unit, and the stored information A channel selected according to the user input may be identified based on the .

The processor may identify whether the service information is updated, and update the stored channel information or source information based on the updated service information.

The broadcast standard includes Advanced Television Systems Committee (ATSC) 3.0, the service information includes at least one of a frequency, a PLP number, a broadcast stream ID, and an LLS version, and the processor includes at least one of the service information. It can be identified that the service information is updated based on a change in the item of .

The broadcast is a first broadcast, the interface unit includes a tuner, and the processor includes: receiving the signal of the second broadcast through the tuner, By processing the received signal of the second broadcast, an image of a broadcast program of a channel provided by the second broadcast may be displayed on the display.

The processor may perform a scanning operation on the signal of the second broadcast, and receive service information of the first broadcast while the scanning operation is performed.

The processor may display information on the channel of the first broadcast and information on the channel obtained from the signal of the second broadcast on the display.

The processor may display a GUI for selecting one of the information of the channel on the display.

The processor may display a GUI indicating that information of the plurality of channels has been acquired on the display.

The processor may receive signaling information defined in the broadcast standard from a broadcast server based on source information associated with the selected channel, and receive data of a broadcast program of the channel based on the received signaling information. .

In the method of controlling an electronic device according to an embodiment of the present invention, service information on broadcast content that can be provided through network communication is requested from among broadcast contents provided according to a predetermined broadcast standard to an external device connected through network communication through an interface unit. to receive; obtaining information on a plurality of channels that can be provided through network communication from the received service information; identifying source information associated with a channel selected according to a user input among the plurality of channels based on the service information; receiving content data of the selected channel using the identified source information through the interface unit; and controlling the received content data to be displayed on a display.

storing the acquired information on the plurality of channels and source information corresponding to the plurality of channels in a storage unit; and identifying a channel selected according to the user input based on the stored information.

identifying whether the service information has been updated; and updating the stored channel information or source information based on the updated service information.

The broadcast standard includes Advanced Television Systems Committee (ATSC) 3.0, and the service information includes at least one of a frequency, a PLP number, a broadcast stream ID, or an LLS version, and identifies whether the service information has been updated. The step may include identifying that the service information is updated based on a change in at least one item of the service information.

wherein the broadcast is a first broadcast, the interface unit includes a tuner, and receiving a signal of a second broadcast through the tuner; and processing the received signal of the second broadcast to display an image of a broadcast program of a channel provided by the second broadcast on the display.

performing a scanning operation on the signal of the second broadcast; The method may include receiving service information of the first broadcast while performing the scanning operation.

The displaying on the display may include displaying information on a channel of the first broadcast and information on a channel obtained from a signal of the second broadcast on the display.

The displaying on the display may include displaying a GUI for selecting one of the channel information on the display.

The receiving of the content data of the channel may include: receiving signaling information defined in the broadcasting standard from a broadcasting server based on source information associated with the selected channel; and receiving data of a broadcast program of the channel based on the received signaling information.

A computer program readable by a computer and a computer program including a code for executing a control method of an electronic device is stored in the recording medium, wherein the control method of the electronic device is transmitted to an external device connected to an external device through network communication through an interface unit according to a predetermined broadcasting standard. requesting and receiving service information on broadcast content that can be provided through network communication among broadcast content provided according to the method; obtaining information on a plurality of channels that can be provided through network communication from the received service information; identifying source information associated with a channel selected according to a user input among the plurality of channels based on the service information; receiving content data of the selected channel using the identified source information through the interface unit; and controlling the received content data to be displayed on a display.

Even when an electronic device other than a specific broadcasting standard is used, various services provided by the corresponding standard can be used, making it convenient for users to use, and furthermore, it can help spread the corresponding standard.

1 is a diagram illustrating an entire system according to an embodiment of the present invention.
2 is a block diagram illustrating the configuration of an electronic device according to an embodiment of the present invention.
3 is a diagram illustrating an operation flowchart of an electronic device according to an embodiment of the present invention.
4 is a block diagram illustrating a concept of a protocol stack according to the ATSC 3.0 standard according to an embodiment of the present invention.
5 is a diagram illustrating an operation of an ATSC 3.0 receiver according to an embodiment of the present invention.
6 is a diagram illustrating a form of service information according to an embodiment of the present invention.
7 is a diagram illustrating an external device according to an embodiment of the present invention.
8 is a diagram illustrating an operation flowchart of an electronic device according to an embodiment of the present invention.
9 is a diagram illustrating a table indicating channel information according to an embodiment of the present invention.
10 is a diagram illustrating an operation flowchart of an electronic device according to an embodiment of the present invention.
11 is a diagram illustrating an operation of an electronic device according to an embodiment of the present invention.
12 is a diagram illustrating an operation of an electronic device according to an embodiment of the present invention.
13 is a diagram illustrating an operation of an electronic device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numbers or symbols refer to components that perform substantially the same function, and the size of each component in the drawings may be exaggerated for clarity and convenience of description. However, the technical spirit of the present invention and its core configuration and operation are not limited to the configuration or operation described in the following embodiments. In describing the present invention, if it is determined that a detailed description of a known technology or configuration related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

In an embodiment of the present invention, terms including an ordinal number such as first, second, etc. are used only for the purpose of distinguishing one element from another element, and the expression of the singular is plural unless the context clearly indicates otherwise. includes the expression of In addition, in an embodiment of the present invention, terms such as 'consisting', 'comprising', 'having' and the like are one or more other features or the presence of numbers, steps, operations, components, parts, or combinations thereof. Or it should be understood that the possibility of addition is not excluded in advance. In addition, in an embodiment of the present invention, a 'module' or 'unit' performs at least one function or operation, and may be implemented as hardware or software or a combination of hardware and software, and is integrated into at least one module. and can be implemented. Further, in an embodiment of the present invention, at least one of the plurality of elements refers to all of the plurality of elements as well as each one or a combination thereof excluding the rest of the plurality of elements.

1 is a diagram illustrating an entire system according to an embodiment of the present invention. 1 , the electronic device 100 may be implemented as a display device capable of displaying an image. For example, the electronic device 100 may include a TV, a computer, a smart phone, a tablet, a portable media player, a wearable device, a video wall, an electronic picture frame, and the like.

The electronic device 100 according to an embodiment of the present invention is an electronic device without a tuner for a broadcast signal to be received, for example, a tuner according to the ATSC 3.0 standard. In the absence of an ATSC 3.0 tuner, the electronic device 100 generally cannot receive a broadcast signal according to the ATSC 3.0 standard.

However, according to an embodiment of the present invention, the electronic device 100 may receive service information from the external device 110 through a network. The external device 110 according to an embodiment of the present invention includes a server or a TV equipped with an ATSC3.0 tuner, and the service information is information necessary to process a broadcast signal of the ATSC 3.0 standard, and provides a quick service scan and service. make it possible to obtain

The electronic device 100 may receive data (or content data) of a broadcast program from a content server including the broadcast server 120 by using source information included in the service information received from the external device 110 . The source information includes URL information for accessing the SLS and the like. The broadcast server 120 includes a service layer signaling (SLS) server, a media server, and the like as a content provider. The data of the broadcast program may be a TV program provided in real time, a VOD provided according to a user's request, and the like, but is not limited thereto.

According to an embodiment of the present invention, if the electronic device does not have an ATSC 3.0 tuner, the ATSC 3.0 broadcast signal cannot be received. However, in the case of receiving service information for broadband broadcasting during broadcasting through the ATSC 3.0 broadcast signal, the broadcast program is received through this. of data can be obtained. Accordingly, the ATSC 3.0 service can be provided even in a device without an ATSC 3.0 tuner through service information reception, which is convenient for users. However, in the present embodiment, the ATSC 3.0 standard is only one of a plurality of standards currently required to provide a broadcast service, and the present invention is not limited thereto.

2 is a block diagram illustrating the configuration of an electronic device according to an embodiment of the present invention.

As shown in FIG. 2 , the electronic device 100 may include an interface unit 210 . The interface unit 210 may include a wired interface unit 211 . The wired interface unit 211 includes a connector or port to which an antenna capable of receiving a broadcast signal according to a broadcasting standard such as terrestrial/satellite broadcasting is connected, or a cable capable of receiving a broadcasting signal according to a cable broadcasting standard is connected. do. As another example, the electronic device 100 may have a built-in antenna capable of receiving a broadcast signal. Wired interface unit 211 is an HDMI port, DisplayPort, DVI port, Thunderbolt, composite video, component (component) video, super video (super video), SCART, such as, video and / or audio transmission standards according to It may include a connector or port, and the like. The wired interface unit 211 may include a connector or port according to a universal data transmission standard, such as a USB port. The wired interface unit 211 may include a connector or a port to which an optical cable can be connected according to an optical transmission standard. The wired interface unit 211 is connected to an external microphone or an external audio device having a microphone, and may include a connector or a port capable of receiving or inputting an audio signal from the audio device. The wired interface unit 211 is connected to an audio device such as a headset, earphone, or external speaker, and may include a connector or port capable of transmitting or outputting an audio signal to the audio device. The wired interface unit 211 may include a connector or port according to a network transmission standard such as Ethernet. For example, the wired interface unit 211 may be implemented as a LAN card connected to a router or a gateway by wire.

The wired interface unit 211 is wired through the connector or port in a 1:1 or 1:N (N is a natural number) method such as an external device such as a set-top box, an optical media playback device, or an external display device, speaker, server, etc. By being connected, a video/audio signal is received from the corresponding external device or a video/audio signal is transmitted to the corresponding external device. The wired interface unit 211 may include a connector or a port for separately transmitting video/audio signals.

Also, according to the present embodiment, the wired interface unit 211 is embedded in the electronic device 100 , but may be implemented in the form of a dongle or a module to be detachably attached to the connector of the electronic device 100 .

The interface unit 210 may include a wireless interface unit 212 . The wireless interface unit 212 may be implemented in various ways corresponding to the implementation form of the electronic device 100 . For example, the wireless interface unit 212 is a communication method RF (radio frequency), Zigbee (Zigbee), Bluetooth (bluetooth), Wi-Fi (Wi-Fi), UWB (Ultra WideBand) and NFC (Near Field Communication), etc. Wireless communication can be used. The wireless interface unit 212 may be implemented as a wireless communication module that performs wireless communication with an AP according to a Wi-Fi method, or a wireless communication module that performs one-to-one direct wireless communication such as Bluetooth. The wireless interface unit 212 may transmit/receive data packets to/from the server by wirelessly communicating with the server on the network. The wireless interface unit 212 may include an IR transmitter and/or an IR receiver capable of transmitting and/or receiving an IR (Infrared) signal according to an infrared communication standard. The wireless interface unit 212 may receive or input a remote control signal from the remote control or other external device through the IR transmitter and/or the IR receiver, or may transmit or output a remote control signal to another external device. As another example, the electronic device 100 may transmit/receive a remote control signal to and from the remote control or other external device through the wireless interface unit 212 of another method such as Wi-Fi or Bluetooth.

When the video/audio signal received through the interface unit 210 is a broadcast signal, the electronic device 100 may further include a tuner for tuning the received broadcast signal for each channel. However, the tuner according to an embodiment of the present invention means that the tuner is not a tuner according to a standard of a broadcast signal to provide a service by separately receiving service information as described above.

The electronic device 100 may include a display unit 220 . The display unit 220 includes a display panel capable of displaying an image on the screen. The display panel is provided with a light-receiving structure such as a liquid crystal type or a self-luminous structure such as an OLED type. The display unit 220 may further include additional components according to the structure of the display panel. For example, if the display panel is a liquid crystal type, the display unit 220 includes a liquid crystal display panel and a backlight unit for supplying light. and a panel driving substrate for driving the liquid crystal of the liquid crystal display panel.

The electronic device 100 may include a user input unit 230 . The user input unit 230 includes various types of input interface related circuits provided to perform user input. The user input unit 230 may be configured in various forms depending on the type of the electronic device 100 , for example, a mechanical or electronic button unit of the electronic device 100 , a remote controller separated from the electronic device 100 , and an electronic device. There is an input unit in an external device connected to the device 100 , a touch pad, and a touch screen installed on the display unit 220 .

The electronic device 100 may include a storage unit 240 . The storage unit 240 stores digitized data. The storage unit 240 has a non-volatile property that can preserve data regardless of whether or not power is provided, and data to be processed by the processor 270 is loaded, and data is stored when power is not provided. It includes memory of volatile properties that cannot. Storage includes flash-memory, hard-disc drive (HDD), solid-state drive (SSD), read-only memory (ROM), etc., and memory includes buffer and random access memory (RAM). etc.

The electronic device 100 may include a microphone 250 . The microphone 250 collects sounds of the external environment including the user's voice. The microphone 250 transmits the collected sound signal to the processor 270 . The electronic device 100 may include a microphone 250 for collecting user voices or may receive a voice signal from an external device such as a remote controller having a microphone or a smart phone through the interface unit 210 . A remote controller application may be installed in an external device to control the electronic device 100 or perform functions such as voice recognition. In the case of an external device installed with such an application, a user's voice can be received, and the external device can transmit/receive and control data using the electronic device 100 and Wi-Fi/BT or infrared rays, etc. A plurality of interface units 210 that can be implemented may exist in the electronic device 100 .

The electronic device 100 may include a speaker 260 . The speaker 260 outputs audio data processed by the processor 270 as sound. The speaker 260 may include a unit speaker provided to correspond to audio data of one audio channel, and may include a plurality of unit speakers to respectively correspond to audio data of a plurality of audio channels. As another embodiment, the speaker 260 may be provided separately from the electronic device 100 . In this case, the electronic device 100 may transmit audio data to the speaker 260 through the interface unit 210 .

The electronic device 100 may include a processor 270 . The processor 270 includes one or more hardware processors implemented with a CPU, a chipset, a buffer, a circuit, etc. mounted on a printed circuit board, and may be implemented as a system on chip (SOC) depending on a design method. When the electronic device 100 is implemented as a display device, the processor 270 includes modules corresponding to various processes such as a demultiplexer, a decoder, a scaler, an audio digital signal processor (DSP), and an amplifier. Here, some or all of these modules may be implemented as SOC. For example, a module related to image processing such as a demultiplexer, a decoder, and a scaler may be implemented as an image processing SOC, and an audio DSP may be implemented as a chipset separate from the SOC.

When the processor 270 obtains a voice signal for the user's voice by the microphone 250 or the like, the processor 270 may convert the voice signal into voice data. In this case, the voice data may be text data obtained through a speech-to-text (STT) process for converting a voice signal into text data. The processor 270 identifies a command indicated by the voice data, and performs an operation according to the identified command. The voice data processing process and the command identification and execution process may all be executed in the electronic device 100 . However, in this case, since the system load and required storage capacity required for the electronic device 100 become relatively large, at least a part of the process is performed by at least one server communicatively connected to the electronic device 100 through a network. can be performed.

The processor 270 according to the present invention may call at least one command among commands of software stored in a storage medium readable by a machine such as the electronic device 100 and execute it. This enables a device such as the electronic device 100 to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not include a signal (eg, electromagnetic wave), and this term refers to a case in which data is semi-permanently stored in a storage medium and a case in which data is temporarily stored. It does not distinguish between cases where

Meanwhile, the processor 270 requests and receives service information on broadcast content that can be provided through network communication among broadcast content provided according to a predetermined broadcast standard to an external device connected through network communication through the interface unit, and receives service information from the received service information. Obtains information of a plurality of channels that can be provided through network communication, identifies source information associated with a channel selected according to a user input among a plurality of channels based on service information, and selects the selected source information using the source information identified through the interface unit. At least one of a machine learning, a neural network, or a deep learning algorithm for at least a part of data analysis, processing, and result information generation for receiving the content data of the channel as a rule-based or artificial intelligence algorithm It can be done using

For example, the processor 270 may perform the functions of the learning unit and the recognition unit together. The learning unit may perform a function of generating a learned neural network, and the recognition unit may perform a function of recognizing (or inferring, predicting, estimating, and judging) data using the learned neural network. The learning unit may generate or update the neural network. The learning unit may acquire learning data to generate a neural network. For example, the learning unit may acquire the learning data from the storage unit 240 or the outside. The learning data may be data used for learning of the neural network, and the neural network may be trained by using the data obtained by performing the above-described operation as learning data.

The learning unit may perform a preprocessing operation on the acquired training data before training the neural network using the training data, or may select data to be used for learning from among a plurality of training data. For example, the learning unit may process the learning data into a preset format, filter it, or add/remove noise to process the learning data into a form suitable for learning. The learner may generate a neural network set to perform the above-described operation by using the preprocessed learning data.

The learned neural network network may be composed of a plurality of neural network networks (or layers). Nodes of the plurality of neural networks have weights, and the plurality of neural networks may be connected to each other so that an output value of one neural network is used as an input value of another neural network. Examples of neural networks include Convolutional Neural Network (CNN), Deep Neural Network (DNN), Recurrent Neural Network (RNN), Restricted Boltzmann Machine (RBM), Deep Belief Network (DBN), Bidirectional Recurrent Deep Neural Network (BRDNN) and It can include models such as Deep Q-Networks.

Meanwhile, the recognizer may acquire target data to perform the above-described operation. The target data may be obtained from the storage unit 240 or the outside. The target data may be data to be recognized by the neural network. The recognizer may perform preprocessing on the acquired target data before applying the target data to the learned neural network, or select data to be used for recognition from among a plurality of target data. For example, the recognition unit may process the target data into a preset format, filter, or add/remove noise to process the target data into a form suitable for recognition. The recognizer may obtain an output value output from the neural network by applying the preprocessed target data to the neural network. The recognition unit may obtain a probability value or a reliability value together with the output value.

For example, the control method of the electronic device 100 according to the present invention may be provided by being included in a computer program product. The computer program product may include instructions in software executed by processor 270 , as described above. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg, CD-ROM), or via an application store (eg, Play Store™) or between two user devices (eg, smartphones). It can be distributed directly, online (eg, downloaded or uploaded). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

3 is a diagram illustrating an operation flowchart of an electronic device according to an embodiment of the present invention. According to an embodiment of the present invention, the processor 270 is configured to access broadcast content that can be provided through network communication among broadcast contents provided according to a predetermined broadcast standard to the external device 110 connected through network communication through the interface unit 210 . You can request and receive service information for 　 (S310). For example, even in an electronic device without an ATSC 3.0 tuner, the processor 270 may receive service information of the ATSC 3.0 broadcast from the external device 110 through the network. The processor 270 may obtain information on a plurality of channels that can be provided through network communication from the received service information ( S320 ). The format defined in the ATSC 3.0 broadcast standard will be described in detail with reference to FIG. 4 .

The processor 270 identifies source information associated with a channel selected according to a user input among a plurality of channels, based on the service information, and receives content data of the selected channel using the identified source information through an interface unit. can be (S330). The service information includes the SLT, and URL information, which is one of the source information, can be obtained from the SLT. The processor 270 may receive the content data of the corresponding channel by accessing the URL obtained from the SLT of the selected channel according to the user input.

The processor 270 may display the received content data on the display (S340).

According to an embodiment of the present invention, even in a device not equipped with a tuner of a broadcast signal to be received, a corresponding broadcast service can be provided through service information reception, so that the user's satisfaction in using the electronic device can be increased, and the broadcast service standard It can also help spread.

4 is a block diagram illustrating a protocol stack according to the ATSC 3.0 standard. This drawing describes how the electronic device 100 according to an embodiment of the present invention can watch ATSC 3.0 broadband broadcast without an ATSC 3.0 tuner through a protocol stack.

In the ATSC 3.0 standard, broadcast signals are transmitted in two ways: broadcast and broadband. A broadcast signal of the broadcast method may be transmitted through a terrestrial path using an MPEG Media Transport Protocol (MMTP) protocol or a Real time object delivery over Unidirectional transport (ROUTE) protocol. According to the MMTP protocol, based on MPEG Media Transport (MMT), Media Processing units (MPUs) are transmitted using MMTP. According to the ROUTE protocol, based on MPEG DASH (Dynamic Adaptive Streaming over HTTP), a DASH segment is transmitted using ROUTE. Content transmitted by moving MMTP or ROUTE may be in real time or non-real time (NRT). These contents can be played by MPU Player or DASH Player.

Broadband broadcast signals are transmitted over a network according to the HTTP protocol. In this case, information such as a DASH segment, signaling information, and NRT is transmitted through HTTP. This information is encapsulated in the link layer through the TCP and IP layers, and is transmitted through processing for transmission in the physical layer. Signaling of ATSC 3.0 is divided into LLS transmitted through a predefined IP address and UDP port, and SLS transmitted through MMTP or ROUTE protocol. Information for acquiring the SLS is provided through SLT, which is a type of LLS, and the SLS provides information on how the physical layer and the transport layer are transmitted in the SLT according to the transmission protocol of the broadcast service. An electronic device equipped with an ATSC 3.0 tuner acquires SLT and SLS from a broadcast signal, thereby securing signaling information of a broadcast service.

In the case of broadband, it receives SLT from the tuner, which is the ATSC 3.0 Physical Layer, and acquires URLs for SLS reception, and obtains URLs and MPDs for service component reception from DASH (Dynamic Adaptive Streaming over HTTP) streaming. Allows viewing of broadcasts. The reason you cannot watch ATSC 3.0 broadband broadcasts on devices without an ATSC 3.0 tuner is that they cannot receive SLT. That is, if service information including SLT can be obtained, it means that even a device without an ATSC 3.0 tuner can view ATSC 3.0 broadband broadcasting. Accordingly, as shown in FIG. 4 , the processor 100 may receive a broadband broadcast signal according to the HTTP protocol using the SLT obtained through the network.

5 is a diagram illustrating an operation of an ATSC 3.0 receiver according to an embodiment of the present invention. According to an embodiment of the present invention, the electronic device 100 may receive service information from the external device 110 . In this case, the external device 110 may receive service information from the ATSC 3.0 receiver 500 equipped with the ATSC 3.0 broadcast tuner. In an embodiment of the present invention, the broadcast signal means a broadcast signal according to the ATSC 3.0 standard, but is not limited thereto. The ATSC 3.0 receiver 500 includes a receiving unit, an LLS processing unit, an SLS processing unit, a media data processing unit, a decoder, and a network module. The receiver of the ATSC 3.0 receiver 500 includes an ATSC 3.0 tuner. The ATSC 3.0 receiver 500 receives a broadcast signal through the receiver when searching for or selecting an ATSC 3.0 broadcast, and the LLS processing unit scans the channel of the broadcast signal through the receiver, including SLT from the received broadcast signal for each frequency band. Extract service information. The LLS processing unit may extract encapsulated service information from a broadcast signal through a user datagram protocol (UDP) and an internet protocol (IP) layer.

Accordingly, the external device 110 may receive the service information extracted from the broadcast signal through the network module of the ATSC 3.0 receiver 500 . The service information includes the frequency of the channel, the PLP (Physical Layer Pipes) number, the broadcast stream ID (@bsid) parsed from the SLT, the Low Level Signaling (LLS) version, and the ATSC 3.0 standard for receiving broadcast signals such as SLT. It may include channel information, but is not limited thereto. Since the electronic device 100 obtains service information from the external device 110 through a network, there is no temporal or spatial limitation with the ATSC 3.0 receiver. The processor 270 may obtain information on a plurality of channels provided by ATSC 3.0 broadband broadcasting from the service information received from the external device 110 .

6 is a diagram illustrating a form of service information according to an embodiment of the present invention. 6 shows a table 600 related to service information. The processor 270 obtains information on a plurality of channels provided by broadcasting from the service information received from the external device 110 through the interface unit 210, and a source associated with a channel selected according to a user input among the plurality of channels. Based on the service information including the information, data of a broadcast program of a channel may be received from the broadcast server 120 through the interface unit 210 . For example, referring to the table 600 of FIG. 6 , the processor 270 may acquire source information included in “SLT” among service information received from the external device 110 through the interface unit 210 . The source information includes "@sltInetUrl" and "@URLtype" described in the table 600 . "@sltInetUrl" means basic URL information for accessing ESG or SLS files corresponding to all services described in the corresponding SLT, and "@URLtype" means the type of file accessible through this URL. Accordingly, the processor 270 may receive data of a broadcast program of the channel from the broadcast server by accessing the URL of the selected channel.

7 is a diagram illustrating an external device according to an embodiment of the present invention. The external device 110 may include an interface unit 710, a storage unit 720, and a processor 730, and the external device 110 is configured by excluding or changing some components, or additionally including other components. can be implemented. The external device 110 may include a server, and may receive service information from the ATSC 3.0 receiver 500 through the interface unit 710 . The processor 730 may store the received service information in the storage unit 720 , and may update the received service information by identifying whether the received service information is the same as the stored service information. Details related to the update will be described later with reference to FIG. 8 .

8 is a diagram illustrating an operation flowchart of an external device according to an embodiment of the present invention. In FIG. 8 , an operation flowchart for updating service information by the external device 110 will be described. The external device 110 may perform a function of transmitting service information to an external device, a function of acquiring all service information currently stored in the external device, a function of acquiring service information corresponding to a given frequency and a PLP number, and the like.

The external device 110 may receive service information from the ATSC 3.0 receiver 500 through the interface unit 710 (S810). For example, it is assumed that the frequency of the received service information is F1, the PLP number is N1, the LLS version is V1, and the broadcast stream ID is I1. The processor 730 may identify whether the service information stored in the storage unit 720 exists by indexing the frequency and the PLP number of the received service information (S820). When the frequency of the service information stored in the storage unit 720 is the same as F1 and the PLP number is N1 (Yes in S820), the processor 730 may identify whether the broadcast stream IDs are the same (S830). When the stored broadcast stream ID is different from the broadcast stream ID I1 received in I2 (No in S830), the processor 270 may delete the service information stored in F1 and N1 (S840). If the broadcast stream ID of the stored service information whose frequency is F1 and the PLP number is N1 is the same as the broadcast stream ID of the received service information (Yes in S830), the processor 730 can identify whether the LLS version is the same. There is (S850). When the stored LLS version V1 is different from the received LLS version V2 (No in S830), the processor 270 may delete the service information stored as F1 and N1 (S840). When the service information is deleted, the processor 730 may store the received service information in the storage unit 720 .

As a result, the external device 110 compares the service information received from the ATSC 3.0 receiver 500 with the service information already stored in the storage unit 720, and when any one of the service information items is changed, it is updated. can

9 is a diagram illustrating a table indicating channel information according to an embodiment of the present invention. According to an embodiment of the present invention, the electronic device 100 further includes a storage unit 240, and the processor 270 stores information on a plurality of channels obtained from service information and source information corresponding to the plurality of channels. It may be stored in the storage unit 240 .

The electronic device 100 may receive all service information stored in the storage unit 720 of the external device 110 . The processor 270 may extract channel information from the SLT among the received service information, and store it together with information such as a frequency and a PLP number in the storage unit 240 .

The table 900 of FIG. 9 shows the channel number, channel name, broadcast standard, and source information stored in the storage unit 240 . For example, in the case of channel number "9-1", it is a "AAA drama" channel and follows the "ATSC 3.0" broadcasting standard, and has source information "URL 1". The processor 270 may identify a channel selected according to a user input based on the stored information. The processor 270 may display a GUI for selecting one of the acquired channel information on the display.

According to an embodiment of the present invention, the processor 270 stores information of a plurality of channels and source information corresponding thereto in the storage unit 240, so that when selecting a channel according to a user input, the processor 270 refers to the stored channel information, etc. Service processing can be accelerated.

10 is a diagram illustrating an operation flowchart of an electronic device according to an embodiment of the present invention. Referring to FIG. 10 , a flowchart of a broadcasting operation of the electronic device 100 and an operation flowchart of updating service information will be described. The update of the service information may be performed in the external device 110 as shown in FIG. 8, but is not limited thereto, and the processor 270 of the electronic device receiving the service information may also perform the update.

According to an embodiment of the present invention, the processor 270 may receive a user input for selecting a channel from among a plurality of channels (S1010). The processor 270 may identify whether information on the selected channel and source information corresponding thereto exist in the storage unit 240 ( S1020 ). When the user selects the channel “11-1”, the processor 270 performs channel information and corresponding information through the table 1000 indicating channel information stored in the storage unit 240 as shown in FIG. 10 . The broadcast server URL, which is the source information for If there is no information on the selected channel (No in S1020), the processor 270 may request and receive service information from the external device 110 (S1030). When the processor 270 accesses the broadcast server 120 through the broadcast server URL included in the stored service information or the received service information (Yes in S1040), the processor 270 receives the broadcast standard from the broadcast server 120. The signaling information defined in may be received (S1050). The signaling information includes a URL capable of receiving broadcast program data. The processor 270 may receive data of a broadcast program of a channel from the broadcast server 120 by accessing the URL included in the received signaling information (S1060).

When a problem occurs such as that the processor 270 is not normally connected to the broadcast server 120 (No in S1040 ), the electronic device 100 has the frequency and PLP number of the channel selected by the external device 110 . Whether or not service information exists may be requested (S1070). When the service information exists (Yes in S1070), the processor 270 may receive new (updated) service information from the external device 110 through the network (S1080). The received service information includes at least one item among a frequency, a PLP number, a broadcast stream ID, and an LLS version, and the processor 270 stores the service stored in the storage unit 240 based on a change in at least one item of the service information. It may be identified whether the information is updated, and the processor 270 may update the stored channel information or source information based on the updated service information (S1090). Since the processor 270 stores information on a plurality of channels obtained from the service information and source information corresponding to the plurality of channels in the storage unit 240 , when the service information is updated, information on channels corresponding to the information and source information can be updated. The processor 270 may receive signaling information through a new broadcast server URL based on the updated service information (S1050), and the processor 270 may receive data of a broadcast program of a channel based on the received signaling information (S1060). ).

When the service information having the frequency and PLP number stored together with the information of the selected channel in the external device 110 does not exist (No in S1070), the absence of the service information means that the corresponding service is no longer provided. Therefore, it is possible to delete the broadcast information parsed from the corresponding service information from the storage unit 240 (S1100) and notify the viewer of the fact that the channel is not valid (S1110).

According to an embodiment of the present invention, when the electronic device 100 receives service information from the external device 110 , it is possible to deliver accurate service information by updating it, and the stored or received service information is not valid. If not, it can be updated so that there is no disruption in the provision of broadcast services.

11 is a diagram illustrating an operation of an electronic device according to an embodiment of the present invention. Referring to FIG. 11 , the interface unit 210 of the electronic device 100 includes a tuner. Accordingly, according to an embodiment of the present invention, the electronic device 100 may receive both the broadband broadcast of the first broadcast standard through the external device 110 and the broadcast broadcast of the second broadcast standard through the tuner. For example, the first broadcast standard may mean ATSC 3.0, the second broadcast standard may mean ATSC 1.0, ATSC 2.0, etc., but is not limited thereto. As described in the previous embodiment, even if the electronic device 100 does not have a tuner according to the first broadcast standard, based on the service information received from the external device 110, the channel provided by the broadband broadcast of the first broadcast standard is selected. An image of a broadcast program can be displayed on the display. In addition, according to an embodiment of the present invention, the processor 270 may receive the second broadcast signal through the tuner, and process the received signal based on the format defined in the second broadcast standard to obtain the second broadcast standard. An image of a broadcast program of a channel provided by the broadcast broadcast may be displayed on the display. In this case, the processor 270 may perform a scanning operation on the broadcast broadcast signal of the second broadcast standard, and receive service information of the broadband broadcast of the first broadcast standard during the scanning operation. Accordingly, when the electronic device 100 generates information on the broadcast channel of the second broadcast standard, the electronic device 100 requests service information from the external device 110 for the broadcast of the second broadcast standard and the broadband channel of the first broadcast standard. information can be generated together. When information of two types of channels is generated together, operation efficiency of the electronic device is increased, and information of channels can be provided to a user in a batch, thereby improving user convenience.

12 is a diagram illustrating an operation of an electronic device according to an embodiment of the present invention. 12 shows that information on channels extracted from two broadcast signals is provided together as described with reference to FIG. 11 . The processor 270 may display channel information obtained from a signal of a broadband broadcast of the first broadcast standard and channel information obtained from a signal of a broadcast broadcast of a second broadcast standard on a display. For example, the "AAA HD" channel of channel number "9" is a broadcast broadcast of the second broadcast standard, and "AAA Drama" of "9-1" is a broadband broadcast of the first broadcast standard. The processor 270 may display the GUI 1200 for selecting one of the acquired channel information on the display. The user is provided with information on channels extracted from two broadcast signals at the same time and can select a desired channel among them, so that the user can conveniently use the broadcast service.

13 is a diagram illustrating an operation of an electronic device according to an embodiment of the present invention. According to an embodiment of the present invention, the processor 270 receives service information to obtain channel information (see S1020 and S1030 in FIG. 10) or updates stored service information (refer to S1090 in FIG. 10), etc. When information on a channel is changed, a GUI 1310 indicating that information on a plurality of channels has been acquired may be displayed on the display. Since the user can check when a channel is added or changed, the user's convenience can be improved.

100: electronics
210: interface unit
220: display unit
230: user input unit
240: storage
250: microphone
260: speaker
270: processor

Claims (20)

In an electronic device,
interface unit; and
Requesting and receiving service information on broadcast contents that can be provided through network communication among broadcast contents provided according to a predetermined broadcasting standard to an external device connected through network communication through the interface unit;
Obtaining information of a plurality of channels that can be provided through network communication from the received service information,
Source information associated with a channel selected according to a user input among the plurality of channels is identified based on the service information,
Receive content data of the selected channel using the identified source information through the interface unit,
and a processor controlling the received content data to be displayed on a display. According to claim 1,
further comprising a storage unit,
The processor is
Storing the obtained information of the plurality of channels and source information associated with the plurality of channels in the storage unit,
An electronic device that identifies a channel selected according to the user input based on the stored information. 3. The method of claim 2,
The processor is
Identifies whether the service information has been updated,
An electronic device for updating the stored channel information or source information based on the updated service information. 4. The method of claim 3,
The broadcast standard includes Advanced Television Systems Committee (ATSC) 3.0,
The service information includes at least one item of frequency, PLP number, broadcast stream ID, or LLS version,
The processor is configured to identify that the service information is updated based on a change in at least one item of the service information. According to claim 1,
The broadcast is the first broadcast,
The interface unit includes a tuner,
The processor is
receiving the signal of the second broadcast through the tuner,
An electronic device for processing the received signal of the second broadcast to display an image of a broadcast program of a channel provided by the second broadcast on the display. 6. The method of claim 5,
The processor is
performing a scanning operation on the signal of the second broadcast;
An electronic device for receiving service information of the first broadcast while performing the scanning operation. 6. The method of claim 5,
The processor is configured to display, on the display, information on a channel of the first broadcast and information on a channel obtained from a signal of the second broadcast. 8. The method of claim 7,
The processor is
An electronic device for displaying a GUI for selecting one of the channel information on the display. According to claim 1,
The processor is configured to display, on the display, a GUI indicating that the information of the plurality of channels has been acquired. According to claim 1,
The processor is
Receive signaling information defined in the broadcast standard from a broadcast server based on source information associated with the selected channel,
An electronic device that receives data of a broadcast program of the channel based on the received signaling information. In the control method of an electronic device,
requesting and receiving service information on broadcast content that can be provided through network communication among broadcast contents provided according to a predetermined broadcast standard to an external device connected through network communication through an interface unit;
obtaining information on a plurality of channels that can be provided through network communication from the received service information;
identifying source information associated with a channel selected according to a user input among the plurality of channels based on the service information;
receiving content data of the selected channel using the identified source information through the interface unit; and
and controlling the received content data to be displayed on a display. 12. The method of claim 11,
storing the acquired information on the plurality of channels and source information corresponding to the plurality of channels in a storage unit; and
and identifying a channel selected according to the user input based on the stored information. 13. The method of claim 12,
identifying whether the service information has been updated; and
The method of controlling an electronic device further comprising the step of updating the stored channel information or source information based on the updated service information. 14. The method of claim 13,
The broadcast standard includes Advanced Television Systems Committee (ATSC) 3.0,
The service information includes at least one item of frequency, PLP number, broadcast stream ID, or LLS version,
The step of identifying whether the service information has been updated includes identifying that the service information has been updated based on a change in at least one item of the service information. 12. The method of claim 11,
The broadcast is the first broadcast,
The interface unit includes a tuner,
receiving a signal of a second broadcast through the tuner; and
and processing the received signal of the second broadcast to display an image of a broadcast program of a channel provided by the second broadcast on the display. 16. The method of claim 15,
performing a scanning operation on the signal of the second broadcast;
and receiving service information of the first broadcast while performing the scanning operation. 16. The method of claim 15,
The step of displaying on the display is
and displaying the channel information of the first broadcast and the channel information obtained from the signal of the second broadcast on the display. 18. The method of claim 17,
The step of displaying on the display is
and displaying a GUI for selecting one of the channel information on the display. 12. The method of claim 11,
Receiving the content data of the channel comprises:
receiving signaling information defined in the broadcasting standard from a broadcasting server based on source information associated with the selected channel; and
and receiving data of a broadcast program of the channel based on the received signaling information. A computer-readable code, comprising: a computer program storing a code for performing a control method of an electronic device;
requesting and receiving service information on broadcast content that can be provided through network communication among broadcast contents provided according to a predetermined broadcast standard to an external device connected through network communication through an interface unit;
obtaining information on a plurality of channels that can be provided through network communication from the received service information;
identifying source information associated with a channel selected according to a user input among the plurality of channels based on the service information;
receiving content data of the selected channel using the identified source information through the interface unit; and
and controlling the received content data to be displayed on a display.

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