KR102440378B1 - Method and system for optimizing terrestrial uhd broadcast transmission - Google Patents

Abstract

Disclosed are a method and system for optimizing terrestrial UHD broadcast transmission. This method is an operating method of a broadcast transmission optimization apparatus operated by at least one processor, comprising: calculating a network delay prediction value through time series analysis of a network delay value with respect to a broadcast signal transmitted by a broadcast apparatus located at a remote location; Comprising the steps of calculating a network delay optimization setting value based on the delay prediction value and a preset network delay reference value, and transmitting the network delay optimization setting value to the broadcasting device, the network delay optimization setting value is the It is applied to broadcast signal transmission of a broadcast device.

Description

Terrestrial UHD broadcasting transmission optimization method and system {METHOD AND SYSTEM FOR OPTIMIZING TERRESTRIAL UHD BROADCAST TRANSMISSION}

The present invention relates to a method and system for optimizing terrestrial Ultra High Definition (UHD) broadcast transmission.

The Advanced Television System Committee (ATSC) is developing a broadcasting technology standard under the name of ATSC 3.0, a terrestrial UHD broadcasting transmission standard, for the next-generation terrestrial broadcasting service based on Internet Protocol (IP).

The UHD broadcasting system uses a variety of signals and various equipment according to it at the same time, and since broadcasting equipment and network equipment are mixed, when an error occurs, it is necessary to understand the interrelationship of the entire system and deal with it. However, since the conventional equipment is managed individually, it is difficult for an operator to manage the broadcasting system.

An object to be solved is to provide a method and system for deriving an optimized transmission setting value by time-series analysis of monitoring information of a terrestrial UHD broadcasting signal, and applying the optimized transmission setting value to a broadcasting device.

According to one aspect, there is provided an operating method of a broadcast transmission optimization apparatus operated by at least one processor, the method comprising: calculating a network delay prediction value through time series analysis of a network delay value with respect to a broadcast signal transmitted by a broadcast apparatus located at a remote location; Calculating a network delay optimization setting value based on the network delay prediction value and a preset network delay reference value, and transmitting the network delay optimization setting value to the broadcasting device, wherein the network delay optimization setting value is , is applied to the broadcast signal transmission of the broadcast device.

In the receiving step, integrated monitoring information is received from an integrated monitoring device, and the integrated monitoring device receives integrated monitoring information in which each monitoring information received from a plurality of local monitoring devices respectively connected to the plurality of broadcasting devices is integrated. transmitted to the broadcast transmission optimization device, wherein the plurality of local monitoring devices include at least one of a network delay value for each broadcast signal transmitted by the plurality of broadcast devices or time-series analysis data for the network delay value Monitoring information may be generated and transmitted to the integrated monitoring device.

The step of calculating the network delay optimization setting value is to set the optimization maximum network delay value (MND) at the present time by using the maximum network delay (MND) value of the previous time and the network delay optimization setting value, and , after calculating the network delay optimization setting value, the optimized maximum network delay value (MND) may be transmitted to a broadcast gateway connected to the broadcasting apparatus in the main control room.

The broadcasting apparatus includes an MPEG Media Transport (MMT) Audio/Video (AV) encoder, and the calculating of the network delay optimization setting value includes a Media Processing Unit (MPU) determining a display time of the received AV signal. ) Calculating the optimization setting value for the MPU proposal time (presentation_time) of the timestamp descriptor, and transmitting to the broadcasting device, the optimization setting value for the MPU proposal time is transmitted to the MMT AV encoder can

The broadcasting device includes a Real-Time Object Delivery over Unidirectional Transport (ROUTE) AV encoder, and the calculating of the network delay optimization setting value includes a suggested presentation included in a Media Presentation Description table. Calculating an optimization setting value for a suggested presentation delay value and transmitting the optimized setting value to the broadcast device may include transmitting the optimized setting value for the proposed presentation delay value to the ROUTE AV encoder.

The broadcasting apparatus includes a caption encoder, and the calculating of the network delay optimization setting value includes: Optimizing setting value for displaying caption data included in a Media Processing Unit (MPU) timestamp descriptor of subtitle data In the calculating and transmitting to the broadcasting device, an optimization setting value for a display time of the caption data may be transmitted to the caption encoder.

According to another feature, a plurality of local monitoring devices respectively connected to a plurality of broadcast devices located at a remote location and generating and outputting network delay information regarding each broadcast signal transmitted by the respective broadcast devices, the plurality of local monitoring devices; An integrated monitoring device that is connected to a monitoring device using a preset communication protocol, collects respective network delay information from the plurality of local monitoring devices, and receives the respective network delay information from the integrated monitoring device, and each and an optimization device for calculating an optimized network delay setting value by analyzing network delay information of , wherein the optimized network delay setting value is applied to the plurality of broadcasting devices.

The optimization device calculates a network delay prediction value by time-series analysis of each of the network delay information, and the optimized network delay setting value using the optimization time calculated based on the network delay prediction value and a preset network delay reference value can be calculated.

Further comprising a broadcast gateway located in the main control room, the optimization device, the maximum network delay (Maximum Network Delay, MND) value of the previous time of the bootstrap timing information in which information about the time information for transmitting the broadcast packet to the radio frequency is recorded. The maximum network delay value (MND) of the current time may be calculated by applying the optimization time, and the maximum network delay value (MND) of the current time may be set as an optimized network delay setting value of the broadcast gateway.

The broadcasting apparatus includes an AV (Audio/Video) encoder, and the optimization apparatus calculates an optimized time offset by applying the optimization time to a time offset that determines a time for displaying an AV signal, and The time offset may be transmitted to the AV encoder.

The broadcasting apparatus further includes a caption encoder, wherein the optimization apparatus calculates an optimized time offset by applying the optimization time to a time offset that determines a time for displaying caption data, and uses the optimized time offset as the optimized time offset. It can be transmitted to the caption encoder.

According to the embodiment, by integrating monitoring of a plurality of terrestrial UHD broadcasting devices located at a remote location and collecting and processing the results of the integrated monitoring, it is possible to check whether an error has occurred at a glance, and when an error occurs, it is easy to understand the interrelationship of the entire system do.

In addition, broadcast quality can be improved by deriving a broadcast transmission optimization value based on a result of monitoring a plurality of terrestrial UHD broadcast devices located at a remote location and applying the broadcast transmission optimization value to the broadcast device.

1 shows the configuration of a broadcast integrated monitoring system according to an embodiment.
FIG. 2 shows the configuration of the optimization device of FIG. 1 .
3 illustrates a method for optimizing a broadcast integrated monitoring system according to an embodiment.
4 illustrates a hardware configuration of a broadcast integrated monitoring system according to an embodiment.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

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

In addition, terms such as “…unit”, “…group”, “…module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. can

The devices described in the present invention are composed of hardware including at least one processor, a memory device, a communication device, and the like, and a program executed in combination with the hardware is stored in a designated place. The hardware has the configuration and capability to implement the method of the present invention. The program includes instructions for implementing the method of operation of the present invention described with reference to the drawings, and is combined with hardware such as a processor and a memory device to execute the present invention.

As used herein, "transmission or provision" may include not only direct transmission or provision, but also transmission or provision indirectly through another device or using a detour path.

In this specification, expressions described in the singular may be construed as singular or plural unless an explicit expression such as “a” or “single” is used.

In this specification, the same reference numbers refer to the same components regardless of the drawings, and "and/or" includes each and every combination of one or more of the referenced components.

In this specification, terms including an ordinal number such as first, second, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

In the flowchart described with reference to the drawings in this specification, the order of operations may be changed, several operations may be merged, some operations may be divided, and specific operations may not be performed.

1 shows the configuration of a broadcast integrated monitoring system according to an embodiment.

Referring to FIG. 1 , the broadcast integrated monitoring system includes a plurality of broadcast systems 1 , 2 , 3 , an integrated monitoring device 400 , and an optimization device 500 respectively located at remote locations.

The plurality of broadcast systems 1, 2, and 3 may transmit Advanced Television Systems Committee (ATSC) 3.0 terrestrial Ultra High Definition Television (UHD) broadcast signals.

Broadcasting system #1(1) may be a system that is located in the main control room of a broadcasting station and transmits UHD broadcasting signals.

Broadcasting system #2(2) and broadcasting system #3(3) are systems that are located in broadcasting transmission stations and transmit UHD broadcasting signals received from broadcasting system #1(1) to broadcasting receiving terminals (not shown) in the broadcasting area. can

According to one example, broadcasting system #1(1) may be located at KBS Yeouido main control room, broadcasting system #2(2) may be located at Namsan transmitting station, and broadcasting system #3(3) may be located at Kwakansan transmitting station.

In this case, although three broadcasting systems 1, 2, and 3 are illustrated, this is an embodiment for convenience of description and is not limited thereto.

The broadcast system #1(1) includes a local monitoring device #1(110), a broadcast gateway 200, and a UHD broadcast device #1(310). The broadcast gateway 200 is connected to the local monitoring device #1 110 and the UHD broadcast device #1 (310).

In this case, the UHD broadcasting device #1 310 includes an AV encoder, a caption encoder, and the like, which are optimization targets.

The UHD broadcast device #1 310 transmits a broadcast signal to the broadcast gateway 200 . In this case, the broadcast signal is broadcast data in which image data and audio data are encoded, and may be generated as a Studio-to-Transmitter Link Tunneling Protocol (STLTP) packet. The broadcast gateway 200 transmits a broadcast signal to the UHD broadcast device #2 (320) and the UHD broadcast device #3 (330).

The broadcast system #2(2) includes a local monitoring device #2(120) and a UHD broadcast device #2(320). The broadcast system #3(3) includes a local monitoring device #3(130) and a UHD broadcast device #3(330). In this case, UHD broadcasting device #2 320 and UHD broadcasting device #3 330 may be Exciter. As an Exciter ATSC 3.0 RF transmitter, it is a device that receives STLTP packets, generates a radio frequency conforming to the ATSC 3.0 standard, and transmits them on air.

The local monitoring device #1 110 receives the STLTP packet transmitted by the broadcast gateway 200 and generates monitoring information. The local monitoring device #1 110 may generate time-series analysis data for the calculated network delay value by using the STLTP packet received from the broadcast gateway 200. The local monitoring device #2 120 is the UHD broadcast Device #2 (320) generates monitoring information about a broadcast signal received from the broadcast gateway (200). The local monitoring device #2 120 may monitor a broadcast signal received from the broadcast gateway 200 and a broadcast signal of the UHD broadcast device #2 320 and generate time-series analysis data.

The local monitoring device #3 (130) generates monitoring information about the broadcast signal received by the UHD broadcast device #3 (330) from the broadcast gateway 200. The local monitoring device #3 (130) may monitor the broadcast signal received from the broadcast gateway 200 and the broadcast signal of the UHD broadcast device #3 (330) and generate time-series analysis data. It is each network delay value calculated using the STLTP packet received by the device #2 (120) and the local monitoring device #3 (130). The network delay value may be a value measured by the local monitoring device #1 110 located in the main control room of the broadcasting station and the local monitoring device #2 120 and the local monitoring device #3 130 located in each local transmission station. In this case, in general, the network delay value measured by the local monitoring device #2 ( 120 ) and the local monitoring device #3 ( 130 ) is larger than the network delay value measured by the local monitoring device #1 ( 110 ).

The optimization device 500 monitors whether such a network delay value is stably maintained, and when it is maintained stably, calculates and applies an optimization value in a manner that reduces the network delay value.

In this case, the local monitoring devices 110 , 120 , and 130 receive broadcast signals in the form of IP packets from the respective UHD broadcast devices 310 , 320 , 330 .

According to an embodiment, the local monitoring devices 110 , 120 , and 130 may voluntarily transmit monitoring information to the integrated monitoring device 400 at a predetermined time point or a specific period. According to another embodiment, the local monitoring devices 110 , 120 , and 130 may transmit monitoring information according to the request of the integrated monitoring device 400 .

The integrated monitoring device 400 is connected to a plurality of local monitoring devices 110, 120, 130 and using a preset communication protocol, and collects monitoring information from a plurality of local monitoring devices 110, 120, 130, respectively. . In this case, as the preset communication protocol, SNMP (Simple Network Management Protocol) and HTTP protocol may be used.

The local monitoring devices 110 , 120 , and 130 may obtain a network delay time from the STLTP packet and generate the network delay time as monitoring information.

The integrated monitoring device 400 may receive monitoring information including each network delay time from each of the local monitoring devices 110 , 120 , and 130 .

The integrated monitoring device 400 may process each monitoring information to generate an integrated monitoring screen and output it through a display device so that an operator can check it.

The optimization device 500 collects monitoring information of each local monitoring device 110 , 120 , 130 from the integrated monitoring device 400 . The optimization device 500 may collect time series analysis data for network delay values measured by each local monitoring device 110 , 120 , 130 from each local monitoring device 110 , 120 , 130 as monitoring information. .

The optimization device 500 analyzes the collected monitoring information to generate an optimized transmission setting value, and transmits the optimized setting value to the UHD broadcasting devices 310 , 320 , 330 and the broadcast gateway 200 to transmit a broadcast signal. Settings can be optimized.

FIG. 2 shows the configuration of the optimization device 500 of FIG. 1 .

In this case, the local monitoring devices 110 , 120 , and 130 are collectively referred to as the local monitoring device 100 , and the UHD broadcast devices 310 , 320 , and 330 are collectively described as the UHD broadcast device 300 .

Referring to FIG. 2 , the optimization device 500 includes a monitoring information collection unit 501 , an optimization setting unit 503 , and an optimization linkage unit 505 .

The monitoring information collection unit 501 may store network delay times among monitoring information of each local monitoring device 100 from the integrated monitoring device 400 . In this case, time series analysis data for respective network delay times for a predetermined time (T ₀ to T _n ) may be collected and stored for each local monitoring device 100 .

The optimization setting unit 503 predicts the network delay time through time series data analysis data for each network delay time stored by the monitoring information collecting unit 501 . The optimization setting unit 503 calculates a setting value for optimizing the network delay time, that is, a network delay optimization setting value, based on the prediction result of the network delay time. The optimization setting unit 503 may calculate an optimization setting value to minimize the network delay time.

In this case, the network delay optimization setting value is calculated for each target device, and the target device of the optimization setting includes the broadcast gateway 200 and the UHD broadcasting device #1 (310).

The UHD broadcasting device #1 310 includes an AV encoder 301 and a caption encoder 303 in detail, and the AV encoder 301 is an MMT (MPEG Media Transport) AV (Audio/Video) encoder ( 305) and a Real-Time Object Delivery over Unidirectional Transport (ROUTE) AV encoder 307 .

The optimization setting unit 503 may optimize a maximum network delay (MND) setting value set by the broadcast gateway 200 .

The optimization setting unit 503 may optimize a time offset setting value set by the MMT AV encoder 305 .

The optimization setting unit 503 may optimize a Suggested Presentation Delay setting value set by the ROUTE AV encoder 307 .

The optimization setting unit 503 may optimize a time offset setting value set by the caption encoder 303 .

The optimization linkage unit 505 communicates with the UHD broadcasting device #1 310 and the broadcast gateway 200 using a preset protocol, and sets the network delay optimization setting value derived by the optimization setting unit 503 to the UHD broadcasting device # 1 310 and the broadcast gateway 200, respectively. In this case, the preset protocol may be SNMP.

The optimization linkage unit 505 may manage communication information capable of communicating with the UHD broadcasting device #1 (310), determine a communication protocol and a data format, and transmit an optimization value.

When the optimization value is changed, the optimization linkage unit 505 transmits the optimization setting value to the optimization target apparatuses 200 and 310 under the control of the optimization setting unit 503 and indicates that the optimization setting has been made from the optimization target apparatus 200 and 310 . get a response

The optimization interworking unit 505 may transmit the MND as an optimization setting value to the broadcast gateway 200 .

The optimization linkage unit 505 may transmit a time offset as an optimization setting value to the MMT AV encoder 305 .

The optimization linkage unit 505 may transmit a Suggested Presentation Delay value to the ROUTE AV encoder 307 as an optimization setting value.

The optimization linkage unit 505 may transmit the time offset as an optimization setting value to the caption encoder 303 .

3 illustrates a method for optimizing a broadcast integrated monitoring system according to an embodiment.

Referring to FIG. 3 , the UHD broadcast device #1 310 transmits a broadcast signal to the broadcast gateway 200 ( S101 ).

The broadcast gateway 200 transmits a broadcast signal to the local monitoring device #1 110 (S103).

The local monitoring device #1 110 may measure a network delay value from the broadcast signal received in S103 and generate time-series analysis data based on the measured network delay value (S105).

The local monitoring device #1 110 transmits monitoring information including time series analysis data for the network delay value generated in S105 to the integrated monitoring device 400 (S107).

The broadcast gateway 200 transmits a broadcast signal to the local monitoring device #2 120 (S109).

The local monitoring device #2 120 may measure a network delay value from the broadcast signal received in S109 and generate time-series analysis data based on the measured network delay value (S111).

The local monitoring device #2 120 transmits monitoring information including the time series analysis data for the network delay value generated in S111 to the integrated monitoring device 400 (S113).

The broadcast gateway 200 transmits a broadcast signal to the local monitoring device #3 130 (S115).

The local monitoring device #3 130 may measure a network delay value from the broadcast signal received in S115 and generate time-series analysis data based on the measured network delay value (S117).

The local monitoring device #3 (130) transmits monitoring information including the time series analysis data for the network delay value generated in S117 to the integrated monitoring device 400 (S119).

The optimization setting unit 503 may receive integrated monitoring information including time series analysis data generated by each local monitoring apparatus from the integrated monitoring apparatus 400 ( S121 ).

The optimization setting unit 503 calculates a future network delay prediction value based on the time series data analysis data of S121 ( S123 ).

The optimization setting unit 503 calculates an optimization setting value based on the network delay prediction value (S125) and transmits it to the UHD broadcasting device #1 310 and the broadcast gateway 200 (S127, S129).

The optimization setting unit 503 calculates the difference between the network delay prediction time calculated in S123 and the preset network delay reference time as the optimization time. In this case, the optimization time calculation may be implemented as in Equation (1).

[Equation 1]

Optimization time = network latency prediction time - network latency reference time

In S129, the optimization linkage unit 505 may transmit an optimized Maximum Network Delay (MND) value to the broadcast gateway 200 and receive a response.

At this time, when the optimization target device is the broadcast gateway 200 , the optimization setting unit 503 bootstraps through the timing management packet (Timing & Management_Packet) information among the monitoring information of the broadcast signal transmitted by the broadcast gateway 200 . Acquire timing information (Bootstrap_Timing_Data). The bootstrap timing information (Bootstrap_Timing_Data) value determines the time at which the broadcast transmitter's Exciter, that is, UHD broadcast device #2 (320) and UHD broadcast device $3 (330) receives and transmits the STLTP packet to RF.

The optimization setting unit 503 applies an optimization time to an existing MND value set before optimization, and may be as shown in Table 1 below.

Bootstrap Timing Data(){
for(i=0; i<num_smission_time; i++
Seconds
nanoseconds
}
}

In this case, the network delay optimization setting value is an MND set by the broadcast gateway 200 and may be calculated through Equation 2 below.

[Equation 2]

Optimization MND (Maximum Network Delay) Value = Conventional MND - Optimization Time

The existing MND in Equation 2 means the MND value of the time point T-1 before the current time point T. The optimized MND value means an MND value applied to the current time T. The optimization time of Equation 2 is calculated through Equation 1.

In S107, the optimization linkage unit 505 may transmit the optimized time offset value to the MMT encoder 305 of the broadcasting device 300 and receive a response.

The optimization setting unit 503 may apply the optimization time of Equation 1 to a time offset (TimeOffset) used to determine a Media Processing Unit (MPU) proposal time (MPU_presentation_time).

The MPU proposal time (MPU_presentation_time) value is included in the MPU timestamp descriptor (Timestamp descriptor) generated by the MMT AV encoder 305 . The MPU proposal time (Mpu_presentation_time) value determines the time for displaying the AV in the receiver of the broadcasting device that has received the AV signal. That is, the broadcast receiving terminal executes the processing to output the video and audio based on the content information at the presentation time indicated by the MPU proposal time (MPU_presentation_time) information. The time offset for optimization of the MPU proposal time (MPU_presentation_time) may be calculated through Equation (3).

[Equation 3]

Existing TimeOffset - Optimization Time = Optimization TimeOffset Value

The optimization time offset value may be a value applied to the current time point T, and the existing time offset value may be a value of a time point T-1 before the current time point T. The optimization time of Equation 3 is calculated through Equation 1.

The MPU timestamp descriptor in which the MPU proposal time (MPU_presentation_time) is recorded may be as shown in Table 2.

Syntax MPU_timestamp_descriptor(){
Descriptor_tag
Descriptor_length
For(i=0; i<N; i++){
Mpu_sequence_number
Mpu_presentation_time
}
{

In S127, the optimization linkage unit 505 may transmit an optimized Suggested Presentation Delay value to the ROUTE AV encoder 307 of the broadcasting device 300 and receive a response.

The optimization setting unit 503 may optimize a suggested presentation delay value. The proposed presentation delay value is a value included in a media presentation description table generated by the ROUTE AV encoder 507, and an optimization time is applied to this value.

The proposed presentation delay value is a property value included in the AV meta information (MPD Media Presentation Description) in the ROUTE-type encoder 407 among AV encoders. The value used to determine As for the proposed presentation delay value, if a too short time is input, the AV packet reception time is reversed with the playback time, so that the AV cannot be played. It is necessary, and it is the optimization setting unit 503 that performs this.

The Suggested Presentation Delay value determines the time for displaying the AV in a receiver (or a broadcast reception terminal) that has received an AV signal. The optimization setting of the proposed presentation delay may be as shown in Equation (4).

[Equation 4]

Optimized Suggested Presentation Delay Value = Existing Suggested Presentation Delay - Optimization Time

The optimized Suggested Presentation Delay value may be a value applied to the current time point (T), and the existing Suggested Presentation Delay value may be a value of a previous time point (T-1) than the current time point (T). The optimization time of Equation 4 is calculated through Equation 1.

In S127 , the optimization linkage unit 505 may transmit an optimized TimeOffset value to the caption encoder 305 of the broadcast device 300 and receive a response.

The optimization setting unit 503 is a time offset used to determine a starting value included in the MPU timestamp descriptor of Internet Media Subtitles and Captions (IMSC)1 subtitle data generated by the caption encoder 305 . (TimeOffset) value can be optimized. Here, the Start value determines a time for displaying caption data in a receiver (or a broadcast reception terminal) that has received a caption signal. The optimization setting of such a starting value may be as in Equation 5.

[Equation 5]

Existing TimeOffset - Optimization Time = Optimization TimeOffset Value

The optimization time offset value may be a value applied to the current time point T, and the existing time offset value may be a value of a time point T-1 before the current time point T. The optimization time of Equation 5 is calculated through Equation 1.

Meanwhile, FIG. 4 shows a hardware configuration of a broadcast integrated monitoring system according to an embodiment.

Referring to FIG. 4 , the local monitoring devices 100 , 110 , 120 , 130 , the integrated monitoring device 400 , and the optimization device 500 may be implemented with at least one computing device 600 , and the operation of the present disclosure Can execute a computer program including instructions (instructions) described to execute.

Hardware of the computing device 600 may include at least one processor 601 , a memory 603 , a storage 605 , and a communication device 607 , and may be connected through a bus. In addition, hardware such as an input device and an output device may be included. The computing device 600 implementing the integrated monitoring device 400 may further include a display device capable of outputting an integrated monitoring screen.

The computing device 600 may be loaded with various software including an operating system capable of driving a computer program. The processor 601 is a device for controlling the operation of the computing device 600 , and may be various types of processors that process instructions included in a computer program, for example, a central processing unit (CPU), a micro processor (MPU) unit), microcontroller unit (MCU), graphic processing unit (GPU), or the like. Also, the processor 801 may perform an operation on a program for executing the method described above.

The memory 603 stores various data, commands and/or information. The memory 603 may load a corresponding computer program from the storage 605 so that the instructions described to execute the operations of the present disclosure are processed by the processor 601 . The memory 603 may be, for example, read only memory (ROM), random access memory (RAM), or the like. The storage 605 may store various data, computer programs, and the like required to execute the operations of the present disclosure. The storage 605 may non-temporarily store a computer program. The storage 605 may be implemented as a non-volatile memory.

The communication device 607 may perform Simple Network Management Protocol (SNMP) protocol communication.

The embodiment of the present invention described above is not implemented only through the apparatus and method, but may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention or a recording medium in which the program is recorded.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto. is within the scope of the right.

Claims (11)

A method of operating a broadcast transmission optimization apparatus operated by at least one processor, the method comprising:
calculating a network delay prediction value through time series analysis of a network delay value with respect to a broadcast signal transmitted by a broadcast device located at a remote location;
Calculating a network delay optimization setting value based on the network delay prediction value and a preset network delay reference value, and
transmitting the network delay optimization setting value to the broadcasting device;
The network delay optimization setting value is,
It is applied to the broadcast signal transmission of the broadcast device,
The network delay prediction value and the network delay optimization setting value are,
including a maximum network delay (MND) value for the broadcast signal,
Calculating the network delay prediction value comprises:
Collect the maximum network delay (MND) values from the broadcast device for a predetermined time, and analyze the time series analysis of the collected maximum network delay (MND) values according to the passage of time. estimating a maximum network delay (MND) value;
Calculating the network delay optimization setting value comprises:
A difference value between the predicted maximum network delay (MND) value of the current time and a predetermined maximum network delay (MND) reference value is calculated as an optimization time, and the maximum network delay (MND) value of a time before the current time is added to the The optimized maximum network delay (MND) value is calculated by applying the calculated optimization time,
The transmitting step is
A method of transmitting the optimized maximum network delay (MND) value to a broadcast gateway connected to a broadcast device in a master control room. In claim 1,
Before calculating the network delay prediction value,
Further comprising the step of receiving the integrated monitoring information from the integrated monitoring device,
The integrated monitoring device,
Transmitting integrated monitoring information that integrates each monitoring information received from a plurality of local monitoring devices respectively connected to a plurality of broadcast devices to the broadcast transmission optimization device,
The plurality of local monitoring devices,
A method of generating monitoring information including at least one of a network delay value for each broadcast signal transmitted by the plurality of broadcast devices or time series analysis data for the network delay value and transmitting the generated monitoring information to the integrated monitoring device. delete In claim 1,
The broadcast device,
Including an MMT (MPEG Media Transport) AV (Audio/Video) encoder,
Calculating the network delay optimization setting value comprises:
Calculate an optimization setting value for the MPU proposal time (presentation_time) of the MPU (Media Processing Unit) timestamp descriptor (Timestamp descriptor) that determines the time to display the received AV signal,
The step of transmitting to the broadcast device,
Transmitting the optimization setting value for the MPU proposal time to the MMT AV encoder, the method. In claim 1,
The broadcast device,
Includes a Real-Time Object Delivery over Unidirectional Transport (ROUTE) AV encoder,
Calculating the network delay optimization setting value comprises:
Calculating an optimization setting value for a suggested presentation delay value included in a media presentation description table,
The step of transmitting to the broadcast device,
and transmitting an optimization setting value for the proposed presentation delay value to the ROUTE AV encoder. In claim 1,
The broadcast device,
a caption encoder;
Calculating the network delay optimization setting value comprises:
Calculating the optimization setting value for the display time of caption data included in the MPU (Media Processing Unit) timestamp descriptor of the caption data,
The step of transmitting to the broadcast device,
A method for transmitting an optimization setting value for displaying time of the caption data to the caption encoder. A plurality of local monitoring devices respectively connected to a plurality of broadcast devices located in remote places to generate and output network delay information on each broadcast signal transmitted by the respective broadcast devices;
An integrated monitoring device connected to the plurality of local monitoring devices using a preset communication protocol to collect respective network delay information from the plurality of local monitoring devices;
an optimization device for receiving each of the network delay information from the integrated monitoring device, and calculating an optimized network delay setting value by analyzing the respective network delay information; and
a broadcast gateway located in the main control room;
The optimized network delay setting value is,
applied to the plurality of broadcasting devices,
The network delay information and the network delay setting value are,
including a maximum network delay (MND) value for the broadcast signal,
The optimization device is
Predict the maximum network delay (MND) value of the current time after the predetermined time through time series analysis that analyzes the trend over time of the maximum network delay (MND) values collected from the plurality of local monitoring devices for a predetermined time and calculating the difference between the predicted maximum network delay (MND) value of the current time and a predetermined maximum network delay (MND) reference value as an optimization time, and the maximum network delay (MND) value of a time before the current time and calculating an optimized maximum network delay (MND) value by applying the calculated optimization time to , and transmitting the optimized maximum network delay (MND) value to the broadcast gateway. In claim 7,
The optimization device is
Broadcast optimization for calculating a network delay prediction value by time-series analysis of each of the network delay information, and calculating the optimized network delay setting value using the optimization time calculated based on the network delay prediction value and a preset network delay reference value system. delete In claim 8,
The broadcast device,
including an AV (Audio/Video) encoder;
The optimization device is
and calculating an optimized time offset by applying the optimization time to a time offset determining a display time of an AV signal, and transmitting the optimized time offset to the AV encoder. In claim 10,
The broadcast device,
Further comprising a caption encoder,
The optimization device is
A broadcast optimization system for calculating an optimized time offset by applying the optimization time to a time offset determining a time for displaying caption data, and transmitting the optimized time offset to the caption encoder.

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