WO2023249148A1

WO2023249148A1 - Tv for processing broadcast signal and method for controlling same

Info

Publication number: WO2023249148A1
Application number: PCT/KR2022/009032
Authority: WO
Inventors: 배승남
Original assignee: 엘지전자 주식회사
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-12-28

Abstract

A method for controlling a television (TV) for processing a broadcast signal according to an embodiment of the present invention comprises the steps of: initiating auto-tuning; storing a scan channel list and parameter information for each channel in a memory; receiving, from a remote control, a command for instructing switching to a specific channel; obtaining parameter information of the specific channel from the memory; and decoding data included in the broadcast signal on the basis of the obtained parameter information.

Description

TV that processes broadcast signals and its control method

The technical field of the present invention is to use various multimedia devices (e.g., televisions, mobile phones, tablet personal computers, laptops, wearable devices, etc.) that process broadcast signals. It is about. More specifically, for example, it can be applied to TVs that process broadcast signals generated based on the ATSC (Advanced Television Systems Committee) 3.0 standard or the ISDB-S3 (Integrated Services Digital Broadcasting for Satellite, 3rd generation) standard.

Recently, the ATSC 3.0 standard or the ISDB-S3 standard has been introduced as a next-generation broadcast standard. In particular, in the United States and elsewhere, the Federal Communications Commission (FFC) approved the use of ATSC 3.0 in November 2017, and accordingly, the Consumer Technology Association (CTA) and the National Association of Broadcasters (NAB) have been jointly operating in Cleveland and other countries since November 2017. Field testing has begun. And, as of 2021, we are building a broadcasting infrastructure that will allow more than 75% of viewers in about 62 DMAs (Designated Market Areas) to receive ATSC 3.0 broadcasts.

Meanwhile, the next-generation broadcasting standards (ex: ATSC 3.0, ISDB-S3, etc.) use packet-structured signals such as IP-type MMT (MPEG Media Transport) and ROUTE (Real-time Object delivery over Unidirectional Transaport) instead of MPEG-2 TS. As a processing standard, it features a wide variety of parameter combinations.

However, although conventional TVs can process 4K/8K broadcast signals, they are designed in a way that parameter information for each channel is extracted from the broadcast signal every time the channel is changed.

Therefore, when turning on the TV or switching channels, there was a problem that the video or audio output of broadcast programs such as 4K/8K became very slow, which led to consumers' perception that the ATSC 3.0 broadcast service was slow. There was a possible problem.

For reference, 4K refers to a broadcasting service of video data consisting of 3,840 pixels horizontally and 2,160 pixels vertically, while 8K refers to a broadcasting service of video data consisting of 7,680 pixels horizontally and 4,320 pixels vertically.

One embodiment of the present invention seeks to propose in detail a process for reducing channel switching time as much as possible when switching to a channel that provides 4K/8K services based on, for example, next-generation broadcasting standards.

Another embodiment of the present invention seeks to experimentally present changes in the communication waveform between the EMMC and SoC within the main board to shorten the channel switching time.

A method of controlling a TV (television) that processes broadcast signals according to an embodiment of the present invention includes the steps of starting auto-tuning and storing a scan channel list and parameter information for each channel in memory. and receiving a command for instructing switching to a specific channel from a remote control, obtaining parameter information of the specific channel from the memory, and based on the obtained parameter information, included in the broadcast signal. It includes the step of decoding the data.

The parameter information for each channel includes, for example, a plurality of pieces of information related to the encoding method of data included in the broadcast signal. The plurality of pieces of information include, for example, information related to frame settings (FRAME SETTINGS), information related to preamble settings (PREAMBLE SETTINGS), information related to subframe settings 0 (SUBFRAME 0 SETTINGS), and PLP settings 0 (PLP 0 SETTINGS).

Furthermore, according to one embodiment of the present invention, periodic signal transmission and reception between the EMMC and SOC (System on chip) is maintained until a command for instructing switching to the specific channel is received from the remote control. On the other hand, after receiving a command for instructing switching to the specific channel from the remote control, aperiodic signal transmission and reception occurs between the EMMC and the SOC.

A TV (television) that processes a broadcast signal according to an embodiment of the present invention includes a tuner that receives the broadcast signal, a controller that starts auto-tuning based on the received broadcast signal, and a scan It includes a memory that stores a channel list and parameter information for each channel, and a transceiver that receives a command from a remote control to instruct switching to a specific channel.

In particular, the controller obtains parameter information of the specific channel from the memory and controls to decode data included in the broadcast signal based on the obtained parameter information.

The memory corresponds to, for example, an Embedded Multi-Media Controller (EMMC), and the controller corresponds to, for example, a system on chip (SoC).

The tuner, the EMMC, and the SoC are located on one main board, and are connected through a first communication path between the tuner and the SoC, and connected through a second communication path between the SoC and the EMMC. It is characterized by

One embodiment of the present invention has the technical effect of reducing channel switching time as much as possible when switching to a channel that provides 4K/8K services based on next-generation broadcasting standards, for example.

For example, while the TV according to the prior art had a delay of about 5 seconds until the screen was displayed after switching channels, the TV according to an embodiment of the present invention has the advantage of shortening the delay time to less than about 2 seconds. there is.

The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

Figure 1 shows the internal process of processing a channel change command after a TV according to the prior art completes auto tuning.

Figure 2 shows components inside a TV according to an embodiment of the present invention.

Figure 3 shows components inside a TV and external devices together according to another embodiment of the present invention.

Figure 4 is a diagram briefly illustrating a circuit configuration including major components of a TV according to an embodiment of the present invention.

Figure 5 shows the internal process of processing a channel change command after the TV completes auto tuning according to an embodiment of the present invention.

Figure 6 shows parameter information for each channel stored in EMMC inside the TV according to an embodiment of the present invention.

Figure 7 (a) shows the change in communication waveform between EMMC and SoC inside a TV according to the prior art, while Figure 7 (b) shows the change in communication waveform between EMMC and SoC inside the TV according to an embodiment of the present invention. It shows changes in communication waveforms.

Figure 8 (a) shows the time it takes for a TV according to the prior art to complete channel switching, while Figure 8 (b) shows the time it takes for a TV according to an embodiment of the present invention to complete channel switching. It shows the time it takes.

Figure 9 shows a process for selecting auto tuning using a TV according to an embodiment of the present invention.

And, Figure 10 shows the internal process of processing a channel change command after the TV completes auto tuning according to another embodiment of the present invention.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted. The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

When a conventional TV starts auto tuning (S101), the scanned channel list is stored in memory (S102).

Furthermore, it is assumed that a TV according to the prior art receives a command related to channel switching from a remote control, etc. (S103).

At this time, the demodulator IC (Integrated Circuit) inside the TV according to the prior art receives the packet (S104). And, the TV according to the prior art can acquire the parameter information of the specific channel selected in step S103 from the packet received in step S104 (S105).

Then, the tuner of the TV according to the prior art locks the SoC (S106). Here, lock can be interpreted to mean, for example, that two devices (e.g., the tuner and SoC described above) will communicate with each other in the future.

A/V data included in the broadcast signal received through the tuner is decoded based on the parameter information obtained in step S105 (S107).

Then, after the SoC processes the decoded signal (S108), the video and audio of the corresponding channel are designed to be output (S109).

However, the process of the prior art described above has a problem in that the channel switching speed is very delayed due to, for example, steps S102, S104, and S105. In particular, in order to process signals in the form of IP packets of the next-generation broadcast standard, channel switching is performed only when packets containing parameter information are received in steps S104 and S105.

However, because packets containing parameter information are transmitted at intervals of about 10 seconds, there is a serious problem that in the worst case, the broadcast of the corresponding channel may not be displayed until about 10 seconds after the channel is switched.

Embodiments of the present invention were designed to solve this problem. In particular, an embodiment of the present invention in contrast to FIG. 1 (prior art) will be described in more detail with reference to FIG. 5 below.

The present invention is applicable to various TV products, for example, the European standard DVB (Digital Video Broadcasting) standard or the North American/Korean standard ATSC (Advanced Television Systems Committee) 3.0 standard.

However, in Figure 2, the process in which the TV 100 performs the first service scan operation according to the ATSC 3.0 standard will be described by way of example, but the scope of the present invention should be determined according to the matters stated in the patent claims.

The tuner 110 determines whether a signal exists using a predefined frequency list. When a signal is detected at a given frequency, the baseband processor 120 extracts the L1 signaling of the preamble.

Furthermore, the baseband processor 120 transmits PLP (Physical Layer Pipe) data including link layer signaling and LLS (Low Level Signaling) to the middleware 130, and the middleware 130 receives the PLP data from the PLP data. Link layer signaling and LLS can be extracted.

Meanwhile, the middleware 130 includes a signaling manager 140 and a channel manager 150.

The middleware 130 receives PLP data including link layer signaling and LLS from the baseband processor 120 and then passes the data to an appropriate parser.

For example, the middleware 130 extracts a Link Mapping Table (LMT) from the link layer signaling and passes the LMT to the LMT parser 141. Furthermore, the middleware 130 extracts a Service List Table (SLT) from the LLS and passes the SLT to the SLT parser 142.

The LMT parser 141 parses the LMT and extracts first information (eg, PLPID, session information (IP address and port number), etc.) needed to create a channel map.

The SLT parser 142 parses the SLT and extracts second information (eg, service id, service name, etc.) required to create a channel map.

The extracted first information and second information are stored in the channel map 151.

Figure 3 shows components inside a TV and external devices together according to another embodiment of the present invention. Those skilled in the art may implement the present invention by combining some components with reference to FIGS. 2 and 3. For example, the baseband processor 120 and middleware 130 shown in FIG. 2 may be included in the controller 209 shown in FIG. 3.

Meanwhile, the TV 200 shown in FIG. 3 includes various components, but the scope of rights of the present invention is not limited thereto, and the scope of rights must be confirmed according to the matters stated in the patent claims.

Furthermore, the components inside the TV 200 shown in FIG. 3 may be controlled through the controller 209, and each component may be connected directly or indirectly. That is, although not shown in FIG. 3, all components inside the TV 200 of FIG. 3 are designed to transmit and receive control signals and/or data directly or indirectly.

First, the tuner 201 receives a broadcast signal through an antenna, etc., and the demux or demultiplexer 202 demultiplexes the audio data and video data included in the broadcast signal.

The audio decoder 203 decodes audio data (encoded state) included in the broadcast signal, and the video decoder 204 decodes video data (encoded state) included in the broadcast signal.

The decoded audio data is output through the audio output unit 207. For example, the audio output unit 207 may be a speaker attached to the TV 200 or a speaker separated from the TV 200.

Meanwhile, the decoded video data is directly output through the video output unit 208. Alternatively, the mixer 205 mixes the menu data and video data generated by the OSD generator 206 and then transmits the mixture to the video output unit 208.

The memory 215 stores various control data and commands for controlling the TV 200, and the controller 209 can control all components within the TV by referring to the memory 215.

Furthermore, the TV 200 transmits and receives data through communication with various external devices around it. For example, video/audio data is received from STB 220 via wired interface 212, and these are processed in audio decoder 203 and video decoder 204, respectively. Alternatively, it is possible for the received video/audio data to be output directly through the audio output unit 207 and video output unit 208 without going through the decoders 203 and 204.

Via the wireless communication module 213, various data are transmitted and received with the mobile device 230 (e.g., mobile phone/wearable device, etc.), and the IR infrared signal of the remote control 240 is received through the infrared sensor 214. do. Alternatively, the remote control 240 capable of Bluetooth communication such as BT transmits and receives various data to and from the TV via the wireless communication module 213.

Figure 4 is a diagram briefly illustrating a circuit configuration including major components of a TV according to an embodiment of the present invention. The embodiment shown in FIG. 4 can also be supplementally interpreted by those skilled in the art by referring to FIGS. 2 and 3 .

The components shown in Figure 4 are included in the TV. However, the scope of rights must be determined according to the matters stated in the patent claims.

The tuner 410 is designed to receive broadcast signals.

The SoC (System on Chip) 420 controls to start auto-tuning based on the received broadcast signal. In FIG. 4 , the SoC 420 is illustrated, but it may also be called a controller (eg, number 209 shown in FIG. 3 ).

The EMMC 430 serves to store a list of scanned channels and parameter information for each channel. In FIG. 4, the EMMC 430 is illustrated, but it can be replaced with a non-volatile memory (NVM) or a memory (No. 215) shown in FIG. 3. In particular, parameter information for each channel stored in memory will be described in more detail in FIG. 6 below.

Although not shown in FIG. 4, the TV according to an embodiment of the present invention further includes a transceiver that receives a command for instructing to switch to a specific channel from the remote control. Here, the transceiver corresponds to, for example, the wireless communication module 213 or the infrared sensor 214 shown in FIG. 3.

Furthermore, the SoC 420 obtains parameter information of the specific channel from the EMMC 430 and controls to decode data included in the broadcast signal based on the obtained parameter information.

That is, according to one embodiment of the present invention, a TV capable of processing 4K/8K broadcasting, which is the next-generation broadcasting standard, databases the parameter information of each channel and stores it in the EMMC 430 during auto tuning.

And, when a signal for switching to an arbitrary channel is applied (for example, through a remote control or a button attached to the TV, etc.), the TV according to an embodiment of the present invention includes parameter information. The technical effect of being able to immediately output video and audio using the parameter information of the corresponding channel stored in the EMMC 430 is expected, without the need to wait until packets are received.

Meanwhile, the parameter information for each channel stored in the above-described EMMC 430 or memory includes, for example, a plurality of pieces of information related to the encoding method of data included in a broadcast signal.

To describe the plurality of pieces of information in more detail, for example, information related to frame settings (FRAME SETTINGS), information related to preamble settings (PREAMBLE SETTINGS), information related to subframe 0 SETTINGS (SUBFRAME 0 SETTINGS), and It contains information related to PLP 0 settings (PLP 0 SETTINGS). Embodiments related to this will be described in more detail with reference to FIG. 6 below.

Furthermore, as another feature of the present invention, the tuner 410, EMMC 430, and SoC 420 are located on one main board 400. In addition, it is connected through a first communication path between the tuner 410 and the SoC 420, and is connected through a second communication path between the SoC 420 and the EMMC 430.

And, as another feature of the present invention, before the TV receives a command for instructing to switch to a specific channel from the remote control, periodic signal transmission and reception is maintained between the EMMC 430 and the SoC 420 (or controller). On the other hand, after the TV receives a command for instructing to switch to a specific channel from the remote control, aperiodic signal transmission and reception occurs between the EMMC 430 and the SoC 420 (or controller). Embodiments related to this will be described in more detail with reference to FIG. 7 below.

Figure 5 shows the internal process of processing a channel change command after the TV completes auto tuning according to an embodiment of the present invention. In particular, one embodiment of the present invention was designed to solve the problems of steps S102, S104, and S105 that were problems in the prior art of FIG. 1.

When the TV according to an embodiment of the present invention starts auto tuning (S501), it is designed to additionally store parameter information for each scanned channel in the memory as well as a list of scanned channels (S501). S502). This point is a clearly distinguishable feature from the prior art shown in FIG. 1.

Furthermore, it is assumed that the TV according to an embodiment of the present invention receives a command related to channel switching from a remote control, etc. (S503).

At this time, unlike the prior art, the TV according to an embodiment of the present invention stores the parameter information of the channel selected in step S503 in memory (e.g., EMMC etc.) (S504).

Then, the TV tuner according to an embodiment of the present invention locks the SoC (S505). Here, lock can be interpreted to mean, for example, that two devices (e.g., the tuner and SoC described above) will communicate with each other in the future.

A/V data included in the broadcast signal received through the tuner is decoded based on the parameter information obtained in step S504 (S506).

Then, after the SoC processes the decoded signal (S507), the video and audio of the corresponding channel are designed to be output (S508).

When designed in this way, there is a technical effect that the broadcast screen and audio of the corresponding channel can be output within about 2 seconds after receiving the channel change command (as mentioned above, the TV for the prior art, in the worst case, can be output after the channel change) There is a serious issue where broadcasts on that channel may not be displayed until about 10 seconds).

Figure 6 shows parameter information for each channel stored in EMMC inside the TV according to an embodiment of the present invention. In Figure 6, Korea's SBS channel, MBC channel, and KBS channel are shown as examples of channels, but channel information from other countries such as the United States to which next-generation broadcasting standards such as ATSC 3.0 are applied may also be included.

For example, according to the ATSC 3.0 standard, a frame (FRAME) consists of a bootstrap (BOOTSTRAP), a preamble (PREAMBLE), a subframe (SUBFRAME), etc.

Parameter information for each channel shown in FIG. 6 includes, for example, a plurality of pieces of information related to the encoding method of data included in an ATSC 3.0 broadcast signal.

The most basic preamble information is contained in the bootstrap, and the bootstrap contains the parameters necessary to demodulate the preamble symbol.

The first preamble symbol includes L1-Basic signaling, and L1-Detail signaling appears after L1-Basic signaling, so it can appear in the first preamble or throughout subsequent preamble symbols.

L1-Basic signaling includes OFDM parameters of the first subframe, and L1-Detail signaling includes OFDM parameters of the remaining subframes and parameters for all PLPs (Physical Layer Pipes).

However, as shown in FIG. 6, it can be seen that parameter information is different for each channel in the ATSC 3.0 standard.

For example, for the SBS channel, the number of symbols per subframe is 49, for the MBC channel, the number of symbols per subframe is 50, and for the KBS channel, the number of symbols per subframe is 50. There are 56 different parameter values set.

By storing such parameter information in advance in memory, the broadcast signal processing speed can be improved when switching to the corresponding channel. As described above, according to the prior art, the TV that received the channel switching command had to wait until it received the packet containing the parameter information shown in FIG. 6, so there was a problem in that the channel switching speed was delayed.

As shown in (a) of FIG. 7, data communication between EMMC and SoC inside a TV according to the prior art has no waveform changes other than periodic communication. Through periodic communication, the SoC only checks whether EMMC is in a normal state.

On the other hand, according to one embodiment of the present invention, before receiving a command for instructing to switch to a specific channel from the remote control, as shown in (a) of FIG. 7, only periodic signals are transmitted and received between EMMC and SoC. It is detected.

However, after receiving a command to instruct switching to a specific channel from the remote control, an aperiodic signal waveform between the EMMC and SoC is additionally detected, as shown in (b) of FIG. 7. As previously described in FIGS. 4 and 5, according to one embodiment of the present invention, when receiving a channel change command, a process occurs in which the SoC acquires parameter information stored in the EMMC.

Figure 8 (a) shows the time it takes for a TV according to the prior art to complete channel switching, while Figure 8 (b) shows the time it takes for a TV according to an embodiment of the present invention to complete channel switching. It shows the time it takes. The specific technical effects of the present invention will be explained through Figure 8.

As shown in (a) of FIG. 8, when a conventional TV TV receives a specific channel selection command, it is designed to wait until it receives a packet containing parameter information for the corresponding channel. When a conventional TV receives the packet, it is possible to display video/audio data included in the broadcast of the specific channel. However, because the transmission cycle of a packet containing channel parameter information is about 10 seconds, there is a problem in that a delay phenomenon occurs on average about 5 seconds.

On the other hand, as shown in (b) of FIG. 8, when the TV according to an embodiment of the present invention receives a specific channel selection command, there is a need to wait until it receives a packet containing parameter information for the corresponding channel. There are advantages that are not there.

As described above, it is possible to display video/audio data included in the broadcast of a specific channel using parameter information of a specific channel previously stored in the memory. When designed in this way, there is a technical effect of shortening the delay time related to channel switching of a TV to which next-generation standards are applied to less than about 2 seconds.

Figure 9 shows a process for selecting auto tuning using a TV according to an embodiment of the present invention. Previously, in step S501 of FIG. 5, the explanation was made assuming that the TV starts auto-tuning. The process of initially triggering auto-tuning will be described below with reference to FIG. 9.

As shown in Figure 9, the TV according to an embodiment of the present invention includes a first option 910 for performing auto tuning and a second option for performing manual tuning (910). 920).

If the above-described first option 910 is selected, the TV according to an embodiment of the present invention scans all available channels starting from the current channel and stores them in memory. At this time, channel information, service name, physical layer information, etc. may be additionally stored in the memory.

And, Figure 10 shows the internal process of processing a channel change command after the TV completes auto tuning according to another embodiment of the present invention. With reference to the embodiments described in FIG. 5 and previous drawings, implementing FIG. 10 also falls within another scope of the present invention.

According to an embodiment of the present invention, a television that processes broadcast signals starts auto-tuning (S1001), and at this time, unlike the prior art, a list of scan channels and parameter information for each channel are provided. is stored in memory (S1002).

When the TV according to one embodiment of the present invention receives a command for instructing to switch to a specific channel from the remote control (S1003), the TV obtains parameter information of the specific channel from the memory (S1004).

And, the TV according to one embodiment of the present invention is designed to decode data included in the broadcast signal based on the obtained parameter information (S1005).

The parameter information for each channel includes, for example, a plurality of pieces of information related to the encoding method of data included in the broadcast signal. More specifically, when a TV according to an embodiment of the present invention processes a broadcast signal based on the ATSC 3.0 standard, the plurality of pieces of information include, for example, information related to frame settings, preamble settings, etc. It is designed to include information related to (PREAMBLE SETTINGS), information related to subframe settings 0 (SUBFRAME 0 SETTINGS), and information related to PLP settings 0 (PLP 0 SETTINGS). In relation to this, as previously shown and explained in detail in FIG. 6, overlapping descriptions will be omitted.

The above-described present invention can be implemented as computer-readable code on a program-recorded medium. Computer-readable media includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. It also includes those implemented in the form of carrier waves (e.g., transmission via the Internet). Additionally, the computer may include a control unit. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Various embodiments of the present invention have been described in the previous table of contents, “Best Mode for Carrying out the Invention,” and it is natural that a person skilled in the art can combine the embodiments described in two or more drawings as necessary within the scope of the present invention. do.

Since the present invention can be applied to any type of multimedia device that processes broadcast signals (e.g., television, mobile phone, tablet PC, laptop, or wearable device, etc.), its industrial applicability is recognized.

Claims

In a method of controlling a TV (television) that processes broadcast signals,

Starting auto-tuning;

Storing a list of scan channels and parameter information for each channel in memory;

Receiving a command from a remote control to instruct switching to a specific channel;

Obtaining parameter information of the specific channel from the memory; and

Decoding data included in the broadcast signal based on the obtained parameter information.

A control method for a TV that processes broadcast signals, comprising:
According to paragraph 1,

The parameter information for each channel is,

A TV control method for processing a broadcast signal, comprising a plurality of pieces of information related to an encoding method of data included in the broadcast signal.
According to paragraph 2,

The plurality of pieces of information are:

Contains information related to frame settings, information related to preamble settings, information related to subframe settings 0, and information related to PLP 0 SETTINGS. A TV control method that processes broadcast signals.
According to paragraph 1,

A TV control method for processing broadcast signals, wherein the memory is implemented with an Embedded Multi-Media Controller (EMMC).
According to paragraph 4,

Before receiving a command to instruct switching to the specific channel from the remote control, periodic signal transmission and reception is maintained between the EMMC and SOC (System on chip).

A TV control method for processing a broadcast signal, characterized in that aperiodic signal transmission and reception occurs between the EMMC and the SOC after receiving a command for instructing switching to the specific channel from the remote control.
In TV (television) that processes broadcast signals,

a tuner that receives the broadcast signal;

a controller that starts auto-tuning based on the received broadcast signal;

A memory that stores a list of scan channels and parameter information for each channel; and

A transceiver that receives commands from a remote control to instruct switching to a specific channel.

Includes,

The controller is,

Obtain parameter information of the specific channel from the memory,

A TV that processes a broadcast signal, characterized in that control to decode data included in the broadcast signal based on the obtained parameter information.
According to clause 6,

The parameter information for each channel is,

A TV that processes a broadcast signal, comprising a plurality of pieces of information related to an encoding method of data included in the broadcast signal.
In clause 7,

The plurality of pieces of information are:

Contains information related to frame settings, information related to preamble settings, information related to subframe settings 0, and information related to PLP 0 SETTINGS. A TV that processes broadcast signals.
According to clause 6,

A TV that processes broadcast signals, wherein the memory corresponds to an Embedded Multi-Media Controller (EMMC).
According to clause 9,

Before receiving a command to instruct switching to the specific channel from the remote control, periodic signal transmission and reception between the EMMC and the controller is maintained.

A TV that processes broadcast signals, wherein aperiodic signal transmission and reception occurs between the EMMC and the controller after receiving a command for instructing switching to the specific channel from the remote control.
According to clause 9,

The controller is a TV that processes broadcast signals, characterized in that it corresponds to a system on chip (SoC).
According to clause 11,

The tuner, the EMMC, and the SoC are located on one main board,

A TV that processes broadcast signals, characterized in that it is connected through a first communication path between the tuner and the SoC, and is connected through a second communication path between the SoC and the EMMC.