KR20220045880A - Apparatus and method for monitoring signaling information - Google Patents

Abstract

A signaling information monitoring device and a method thereof are disclosed. According to an embodiment of the present invention, the signaling information monitoring device comprises: a monitoring unit for monitoring signaling information in a broadcast stream transmitted from a broadcast system; and a processing unit for generating medium information based on the broadcast stream and outputting the medium information and the signaling information to a display together with a broadcast screen provided by the broadcast system.

Description

Signaling information monitoring device and method {APPARATUS AND METHOD FOR MONITORING SIGNALING INFORMATION}

The present invention relates to a terrestrial UHD broadcasting technology, and more particularly, to a technology for monitoring signaling information in a terrestrial UHD broadcasting system.

The technology to provide terrestrial UHD disaster warning is based on the North American standard ATSC 3.0. In the ATSC 3.0 system standard, the Wake-up signal for forcibly waking the receiving terminal in standby mode to support the disaster alert broadcasting service and the Advanced Emergency Alert Table (AEAT) signal, which is a signaling for transmitting multimedia including the disaster alert message, are the main ones. included as a function. While the existing disaster warning broadcasting service is very limitedly provided mainly for text, the ATSC 3.0 standard can provide extended services to various customized multimedia including existing text through AEAT. In addition, the disaster warning service is a service directly related to the safety of the people, and stable and prompt information delivery is very important.

In such a broadcast transmission system, condition monitoring and performance verification for stable operation of equipment are required.

Meanwhile, Korean Patent Laid-Open No. 10-2017-0109296 “A device and method for verifying a service in an ATSC 3.0-based broadcasting system” verifies the reception status of a broadcasting service provided in real time through a broadcasting network or communication network in an ATSC 3.0-based broadcasting system. Disclosed is an apparatus and method for

An object of the present invention is to provide a more stable service by determining whether each equipment required for service transmission in a terrestrial UHD broadcasting service operates normally.

To achieve the above object, a signaling information monitoring apparatus according to an embodiment of the present invention generates media information based on a monitoring unit monitoring signaling information in a broadcast stream transmitted from a broadcast system and the broadcast stream, and the broadcast and a processing unit for outputting the media information and the signaling information to a display together with a broadcast screen provided by the system.

The present invention can provide a more stable service by determining whether each equipment required for service transmission in a terrestrial UHD broadcasting service operates normally.

1 is a block diagram illustrating a broadcasting system for monitoring signaling information according to an embodiment of the present invention.
2 is a block diagram illustrating an apparatus for monitoring signaling information according to an embodiment of the present invention.
3 is a diagram illustrating a signaling information monitoring operation according to an embodiment of the present invention.
4 is an operation flowchart illustrating a signaling information monitoring method according to an embodiment of the present invention.
5 is a diagram illustrating a computer system according to an embodiment of the present invention.

The present invention will be described in detail with reference to the accompanying drawings as follows. Here, repeated descriptions, well-known functions that may unnecessarily obscure the gist of the present invention, and detailed descriptions of configurations will be omitted. The embodiments of the present invention are provided in order to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer description.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

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

1 is a block diagram illustrating a broadcasting system for monitoring signaling information according to an embodiment of the present invention.

Referring to FIG. 1 , a broadcasting system for monitoring signaling information according to an embodiment of the present invention includes a broadcasting system 10 , a display 20 , and an apparatus 100 for monitoring signaling information.

The signaling information monitoring apparatus 100 may monitor signaling information in a broadcast stream transmitted from the broadcast system 10 .

In this case, the broadcasting system 10 may correspond to an ATSC 3.0-based terrestrial UHD broadcasting system.

The signaling information monitoring apparatus 100 may generate media information based on the broadcast stream, and may output the media information and signaling information to the display 20 together with the broadcast being provided by the broadcast system 10 .

In this case, the audio information and the video information may include information related to a disaster alert.

2 is a block diagram illustrating an apparatus for monitoring signaling information according to an embodiment of the present invention. 3 is a diagram illustrating a signaling information monitoring operation according to an embodiment of the present invention.

Referring to FIG. 2 , an apparatus for monitoring signaling information according to an embodiment of the present invention includes a monitoring unit 110 and a processing unit 120 .

The monitoring unit 110 may monitor signaling information in a broadcast stream transmitted from a broadcast system.

In this case, the signaling information may be defined through an Advanced Emergency Alert Table (AEAT) in a broadcast stream for delivering a disaster alert based on the ATSC 3.0 standard.

AEAT is included as a part of LLS (Low Level Signaling) among service signaling defined in the ATSC 3.0 standard, and can be expressed in XML format.

The ATSC 3.0 standard can provide extended services to various customized multimedia including existing text through AEAT.

AEAT can provide automatic channel switching service with multi-language support, regional-based customized information, information by recipient group, and disaster alert-related rich media and disaster broadcasting.

The AEAT message may be composed of a header part, an AEAtext part for language, a live media provision information part, and an additional media provision information part to transmit signaling.

The details of the AEAT message processed in XML format may be expressed in a format suitable for AEA-MF (Message Format). In more detail, AEAT may be classified into one header, one or more AEAtext, LiveMedia, and Media expressed in different languages, and detailed attributes may be set.

It can be seen that Table 1 shows signaling information according to an embodiment of the present invention.

[Table 1]

It can be seen that Table 1 shows values assignable to LLS_table_id, which is one of signaling information included in LLS. When the LLS_table_id value is assigned to "0x04", the signaling set in the corresponding table is defined as signaling related to AEAT, and signaling for providing a disaster warning service may be configured.

A signaling desired to be monitored may be allocated in the same form as an attribute.

In this case, the monitoring unit 110 may monitor the LLS_table_id value parsed at the input/output terminal of the transmission device to measure the disaster alert service processing time for each transmission device corresponding to the broadcast system 10 .

The processing unit 120 may generate media information based on the broadcast stream, and output the media information and the signaling information to the display 20 together with a broadcast screen provided by the broadcast system 10 .

In this case, when the parsed LLS_table_id value is parsed as “0x04”, the processing unit 120 may check the processing time by comparing the output time and the input time of the parsed LLS_table_id value as shown in Equation 1 .

[Equation 1]

In this case, the processing unit 120 may output the processing time in the form of capRT/aeaGT.

In this case, when a disaster-related alarm occurs in the broadcasting system, the processing unit 120 may output the disaster-related information monitored in the signaling information to the display as the media information.

Referring to FIG. 3 , it can be seen that the disaster-related information included in the signaling information is also output on the broadcast screen output from the display 20 .

First, it can be seen that media information about a broadcast service is output in an overlay form on the broadcast screen (A).

(A) shows that the broadcast channel name, interface type, bit rate, media codec, and media information related to media are output.

In this case, when a disaster-related alarm occurs while the broadcast system 10 transmits a broadcast signal, the processing unit 120 may output related signaling information to the display 20 (B).

In (B), it can be seen that a disaster occurrence time, a broadcast channel expressing the occurrence of a disaster, and text related to a disaster notification are overlaid on the broadcast screen as signaling information and output.

In this case, the processing unit 120 may output processing time information related to the disaster alert service processing time in the form of capRT/aeaGT (C).

을 연산하여 Dif(different, 입출력시간 차이)로 디스플레이(20)에 출력할 수 있다.At this time, the processing unit 120 processing time

may be calculated and output to the display 20 as Dif (different, input/output time difference).

Water Code 1 implements XML and a separate file for processing AEAT defined in the ATSC 3.0 standard to extend monitoring including disaster warning service processing time for special purposes that are not exposed to general users, and includes signaling information. it can be seen that

[Water Code 1]

The targetNamespace and xmlns:aeaex described in the third and fourth lines of the water code 1 can be newly allocated to suit the domestic environment. In order to perform monitoring for a special purpose, additional monitoring can be performed by allocating the signaling desired to be monitored in the form of an element in the ninth line or an attribute in the 15th to 17th lines.

In addition, in_LLS_table_id and out_LLS_table_id for measuring the processing time may be defined in water code 1, and a signal such as feedbackUrl defining an address for feedbacking the operation state of the terminal may also be added.

Even if signaling for monitoring is added separately from the standard, such as AEAT_EX, if implemented in the same form as water code 1, the ATSC 3.0 standard is not violated and monitoring of desired items can be performed.

4 is an operation flowchart illustrating a signaling information monitoring method according to an embodiment of the present invention.

Referring to FIG. 4 , the signaling information monitoring method according to an embodiment of the present invention may first monitor signaling information ( S210 ).

That is, in step S210, signaling information in a broadcast stream transmitted from a broadcast system may be monitored.

In this case, the signaling information may be defined through an Advanced Emergency Alert Table (AEAT) in a broadcast stream for delivering a disaster alert based on the ATSC 3.0 standard.

AEAT is included as a part of LLS (Low Level Signaling) among service signaling defined in the ATSC 3.0 standard, and can be expressed in XML format.

The ATSC 3.0 standard can provide extended services to various customized multimedia including existing text through AEAT.

AEAT can provide automatic channel switching service with multi-language support, regional-based customized information, information by recipient group, and disaster alert-related rich media and disaster broadcasting.

The AEAT message may be composed of a header part, an AEAtext part for language, a live media provision information part, and an additional media provision information part to transmit signaling.

The details of the AEAT message processed in XML format may be expressed in a format suitable for AEA-MF (Message Format). In more detail, AEAT may be classified into one header, one or more AEAtext, LiveMedia, and Media expressed in different languages, and detailed attributes may be set.

It can be seen that Table 1 shows signaling information according to an embodiment of the present invention.

It can be seen that Table 1 shows values assignable to LLS_table_id, which is one of signaling information included in LLS. When the LLS_table_id value is assigned to "0x04", the signaling set in the corresponding table is defined as signaling related to AEAT, and signaling for providing a disaster warning service may be configured.

A signaling desired to be monitored may be allocated in the same form as an attribute.

In this case, in step S210 , the LLS_table_id value parsed at the input/output terminal of the transmission device may be monitored to measure the disaster alert service processing time for each transmission device corresponding to the broadcasting system 10 .

In addition, the signaling information monitoring method according to an embodiment of the present invention may generate media information (S220).

That is, in step S220, media information (audio information and video information) may be generated based on the broadcast stream.

At this time, in step S220, when the parsed LLS_table_id value is parsed as “0x04”, as in Equation 1, the processing time may be calculated by comparing the output time and the input time of the parsed LLS_table_id value.

In addition, the signaling information monitoring method according to an embodiment of the present invention may output media information and signaling information (S230).

That is, in step S230 , the media information and the signaling information may be output to the display 20 together with a broadcast screen provided by the broadcast system 10 .

In this case, step S230 may output the processing time in the form of capRT/aeaGT.

In this case, in step S230, when a disaster-related alarm occurs in the broadcasting system, the disaster-related information monitored in the signaling information may be output as the media information to the display.

Referring to FIG. 3 , it can be seen that the disaster-related information included in the signaling information is also output on the broadcast screen output from the display 20 .

First, it can be seen that media information about a broadcast service is output in an overlay form on the broadcast screen (A).

(A) shows that the broadcast channel name, interface type, bit rate, media codec, and media information related to media are output.

In this case, in step S230, when a disaster-related alarm occurs while the broadcast system 10 transmits a broadcast signal, related signaling information may be output to the display 20 (B).

In (B), it can be seen that a disaster occurrence time, a broadcast channel expressing the occurrence of a disaster, and text related to a disaster notification are overlaid on the broadcast screen as signaling information and output.

In this case, step S230 may output information related to the disaster alert service processing time in the form of capRT/aeaGT (C).

을 연산하여 Dif(different, 입출력시간 차이)로 디스플레이(20)에 출력할 수 있다.At this time, step S230 is the processing time

may be calculated and output to the display 20 as Dif (different, input/output time difference).

5 is a diagram illustrating a computer system according to an embodiment of the present invention.

Referring to FIG. 5 , the signaling information monitoring apparatus according to an embodiment of the present invention may be implemented in a computer system 1100 such as a computer-readable recording medium. As shown in FIG. 5 , the computer system 1100 includes one or more processors 1110 , a memory 1130 , a user interface input device 1140 , and a user interface output device 1150 that communicate with each other via a bus 1120 . and storage 1160 . In addition, the computer system 1100 may further include a network interface 1170 coupled to the network 1180 . The processor 1110 may be a central processing unit or a semiconductor device that executes processing instructions stored in the memory 1130 or the storage 1160 . The memory 1130 and the storage 1160 may be various types of volatile or non-volatile storage media. For example, the memory may include a ROM 1131 or a RAM 1132 .

As described above, in the signaling information monitoring apparatus and method according to an embodiment of the present invention, the configuration and method of the embodiments described above are not limitedly applicable, but the embodiments are provided so that various modifications can be made. All or part of each embodiment may be selectively combined and configured.

100: signaling information monitoring device
110: monitoring unit 120: processing unit
1100: computer system 1110: processor
1120: bus 1130: memory
1131: rom 1132: ram
1140: user interface input device
1150: user interface output device
1160: storage 1170: network interface
1180: network

Claims (1)

a monitoring unit for monitoring signaling information in a broadcast stream transmitted from a broadcast system; and
a processing unit generating media information based on the broadcast stream and outputting the media information and the signaling information to a display together with a broadcast screen provided by the broadcast system;
Signaling information monitoring device comprising a.

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