WO2019112346A1 - Method and apparatus for transmitting and receiving electronic service guide - Google Patents

Method and apparatus for transmitting and receiving electronic service guide Download PDF

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Publication number
WO2019112346A1
WO2019112346A1 PCT/KR2018/015442 KR2018015442W WO2019112346A1 WO 2019112346 A1 WO2019112346 A1 WO 2019112346A1 KR 2018015442 W KR2018015442 W KR 2018015442W WO 2019112346 A1 WO2019112346 A1 WO 2019112346A1
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WO
WIPO (PCT)
Prior art keywords
service guide
guide delivery
device
delivery unit
request
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PCT/KR2018/015442
Other languages
French (fr)
Korean (ko)
Inventor
김광태
홍석구
김재현
정다현
Original Assignee
주식회사 에어코드
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Priority to KR20170168599 priority Critical
Priority to KR10-2017-0168599 priority
Application filed by 주식회사 에어코드 filed Critical 주식회사 에어코드
Priority to KR10-2018-0156329 priority
Priority to KR1020180156329A priority patent/KR20190068457A/en
Publication of WO2019112346A1 publication Critical patent/WO2019112346A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65Arrangements characterised by transmission systems for broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H60/00Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/68Systems specially adapted for using specific information, e.g. geographical or meteorological information
    • H04H60/72Systems specially adapted for using specific information, e.g. geographical or meteorological information using EPGs [Electronic Programme Guides]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61Network physical structure; Signal processing

Abstract

A method and an apparatus for transmitting and receiving an electronic service guide are provided. The method is a method in which an electronic service guide server operated by at least one processor transmits an electronic service guide to a device, the method comprising the steps of: generating a plurality of service guide delivery units (SGDUs) constituting an electronic service guide in predetermined update units; transmitting the plurality of service guide delivery units generated in the update units to the device through a communication network; and transmitting at least one changed service guide delivery unit to the device when at least one service guide delivery unit of the plurality of service guide delivery units has been changed.

Description

Method and apparatus for transmitting and receiving electronic service guide

The present invention relates to a method and apparatus for transmitting and receiving an electronic service guide (ESG) in a digital broadcasting system.

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

In ATSC 3.0, various types of high quality broadcast services can be delivered to users through the convergence of Internet and broadcasting with IP based transmission method.

UHD TV requests and receives service guide information through a communication network when a communication network is available. As UHD TV penetration increases, network requests continue to increase with the service guide server. If the service guide information delivered to UHD TV is not optimized, the network usage of the service guide information continuously increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for transmitting and receiving an electronic service guide capable of reducing network usage.

According to one aspect of the present invention, a transfer method is a method for an electronic service guide server operating by at least one processor to transmit an electronic service guide to a device, comprising a plurality of service guide delivery units A Guide Delivery Unit (SGDU) of a plurality of service guide delivery units, and transmitting the plurality of service guide delivery units generated by the update unit to the device through a communication network; And if the service guide delivery unit is changed, sending at least one modified service guide delivery unit to the device.

Further comprising receiving a service guide forwarding unit request from the device between the creating step and the step of transmitting to the device, wherein the step of transmitting to the device comprises: , Compressing the plurality of service guide delivery units, and transmitting the compressed service guide delivery unit to the device.

Receiving a Service Guide Delivery Descriptor (SGDD) request from the device prior to the receiving step, grouping the plurality of service guide delivery units, and transmitting the location information of the grouped service guide delivery unit And transmitting the service guide delivery analyzer to the device. The service guide delivery unit request may include location information of the grouped service guide delivery unit.

Wherein the transmitting the modified service guide delivery unit comprises: modifying at least one service guide delivery unit based on the broadcast change information received from the broadcast service provider; receiving a service guide delivery resolver request from the device; Grouping the changed service guide delivery unit, transmitting a service guide delivery interpreter including location information of the grouped changed service guide delivery unit to the device, receiving a service guide delivery unit request from the device Compressing the grouped modified service guide delivery unit using the compression algorithm included in the service guide delivery unit request, and transmitting the compressed modified service guide delivery unit to the device It can hamhal.

Wherein the service guide delivery interpreter request and the service guide delivery unit request include an HTTP (Hyper Text Transfer Protocol) request message, and the service guide delivery interpreter and the service guide delivery unit forward .

The compression algorithm may be recorded in the compression instruction information included in the header of the HTTP request message received from the device.

The update unit may include at least one of a date, a time zone and a service.

According to another aspect of the present invention, a receiving method is a method for a device operated by at least one processor to receive an electronic service guide from an electronic service guide server, the method comprising: transmitting a service guide constituting an electronic service guide to the electronic service guide server Receiving a service guide delivery unit (SGDU) request through a communication network; receiving, from the electronic service guide server, a plurality of service guide delivery units generated on a predetermined update unit basis through the communication network; Transmitting a service guide forwarding unit request to the electronic service guide server when a reception trigger event occurs; and transmitting, from the electronic service guide server, at least one service delivery unit changed from among the plurality of service delivery units And a step of.

Wherein the step of receiving the plurality of service guide delivery units comprises receiving the compressed data of the plurality of service guide delivery units and receiving the changed at least one service delivery unit, can do.

Wherein the step of sending a service guide delivery unit request to the electronic service guide server comprises the steps of sending a Service Guide Delivery Descriptor (SGDD) request to the electronic service guide server, And requesting the electronic service guide server to update the service guide delivery unit based on the information obtained from the service guide delivery interpreter.

The step of requesting the update may request the update of the service guide delivery unit when the version index included in the service guide delivery interpreter is larger than the previously stored version index.

Wherein the step of transmitting the service guide delivery unit constituting the electronic service guide comprises the steps of acquiring information of the electronic service guide server from the signaling information received through the broadcasting network, (SGDD) request from the electronic service guide server, receiving a service guide delivery interpreter including information of the plurality of service guide delivery units from the electronic service guide server, To the electronic service guide server, a service guide delivery unit request to the electronic service guide server.

According to another aspect of the present invention, there is provided an apparatus for providing an electronic service guide, comprising: a communication device for transmitting and receiving data to and from a device connected through a communication network; a memory for storing a program for providing an electronic service guide upon request of the device; Wherein the program is configured to generate a plurality of service guide delivery units (SGDUs) constituting the electronic service guide in a predetermined update unit, Transmitting the plurality of service guide delivery units to the device in response to the request, changing at least one service guide delivery unit among the plurality of service guide delivery units based on the broadcast change information acquired from the broadcast service provider, device Instructions for sending at least one modified service guide delivery unit to the device according to a second request of the service guide delivery unit.

Wherein the update unit includes at least one of a date, a time zone, and a service, and the program further comprises a Service Guide Delivery Descriptor (SGDD) including information of the service guide delivery unit of the update unit to the device And < / RTI >

The program comprising instructions for changing a version of the service guide delivery interpreter by a predetermined unit after changing the service guide delivery unit and sending a service availability delivery resolver comprising the incremented version index to the device , The second request may be received from the device that verified the incremented version index.

According to an embodiment of the present invention, when updating an electronic service guide (ESG), an updated service guide delivery unit (SGDU), not an entire service guide delivery unit (SGDU) Lt; / RTI > Therefore, not only the amount of network usage for transmitting the electronic service guide between the device and the service guide server is remarkably reduced, but also the changed service guide delivery unit is received in the device, so the data throughput is reduced.

1 illustrates an ESG data model according to an embodiment of the present invention.

2 is a block diagram of a digital broadcasting system according to an embodiment of the present invention.

3 is a flowchart illustrating an ESG data transfer method according to an embodiment of the present invention.

Figure 4 shows a prior art for comparison with the present invention.

5 illustrates an update unit according to an embodiment of the present invention.

6 illustrates an update unit according to another embodiment of the present invention.

7 illustrates an update unit according to another embodiment of the present invention.

8 is a hardware block diagram of a device to which an embodiment of the present invention may be applied.

9 is a hardware block diagram of a service guide server to which an embodiment of the present invention can be applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Also, the terms " part, "" ... "," module ", and the like described in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software .

In the present specification, signaling refers to transmission and reception of service information (SI) provided in a broadcasting system, an Internet broadcasting system, and / or a broadcasting / Internet convergence system.

The broadcast signal may be a signal and / or a signal provided in two-way broadcasting such as Internet broadcasting, broadband broadcasting, communication broadcasting, data broadcasting and / or VOD (Video On Demand) in addition to terrestrial broadcasting, cable broadcasting, satellite broadcasting, Or data.

Embodiments of the present invention may be supported by the Advanced Television System Committee Standard (ATSC) document. That is, the steps or portions of the embodiments of the present invention that are not described in order to clearly illustrate the technical idea of the present invention can be supported by the document. In addition, all terms disclosed in this document may be described by the standard document.

The Electronic Service Guide (hereinafter referred to as ESG) is signaling information for providing detailed information of a broadcast program by channel and time in terrestrial UHD (Ultra High Definition) broadcasting. The ESG can provide various information related to a broadcast program such as a broadcast channel, a name of a broadcast service, a broadcast time, or a broadcast service provider.

The ESG can provide past program information, current program information, and future program information. The past program information may be, for example, yesterday's broadcast schedule information. The current program information can be referred to as real-time program information at the present time. Future program information can be said to be the future programming information from now. The ESG may provide video clip information of a past program and link information to a preview image of a future program.

ESG can provide various additional information (video / image) of past, present, and future as well as program information of a broadcast program.

The ESG standard is based on the ATSC 3.0 standard, basically the same as the terrestrial UHD standard. In the terrestrial UHD standard, the ESG is defined as an independent service rather than as signaling information.

1 illustrates an ESG data model according to an embodiment of the present invention.

Referring to FIG. 1, the ESG data is composed of a Service Guide Delivery Descriptor (SGDD) and a Service Guide Delivery Unit (SGDU). do.

The SGDD is a descriptor indicating the configuration information of the ESG, and provides the range of the ESG data to be transmitted and the location information of the SGDU. The SGDD describes information about the SGDU.

The SGDU includes all ESG information actually provided, that is, ESG data. The SGDU consists of a total of three fragments. That is, the SGDU includes a service fragment, a content fragment, and a schedule fragment.

According to the terrestrial UHD TV broadcast transmission / reception registration standard (TTAK.KO-07.0127 / R1), a service fragment displays channel information and provides a service provided to the user, for example, a broadcaster service ID, a channel number, .

The content fragment includes detailed information or metadata about the individual content. For example, the content fragment includes a program ID, a program name, a description, a Preview icon, video link information, version information, and the like.

The schedule fragment includes schedule information for one service or one content. For example, the schedule fragment is program schedule information, including a service fragment reference, a content fragment reference, a program start time, a program end time, version information, and the like.

Therefore, the fragment that is the unit constituting the ESG is included in the SGDU indicated by the SGDD and transferred to the device.

2 is a block diagram of a digital broadcasting system according to an embodiment of the present invention.

Referring to FIG. 2, a device 100 in a digital broadcasting system is connected to a broadcasting server 300 through a broadcasting network 200, and receives broadcasting signals from a broadcasting server 300. The device 100 is connected to the service guide server 500 through the communication network 400 and receives ESG data from the service guide server 500.

The device 100 is a device that can receive and reproduce a digital broadcast signal, and includes a TV (Television), a settop box, and the like. The device 100 may include a mobile terminal such as a smart phone or a tablet capable of receiving a digital broadcast signal, a desktop personal computer (PC), a notebook PC, and the like.

The broadcast network 200 provides a path for transmitting a broadcast signal to the device 100, for example, a terrestrial broadcast network, a satellite broadcast network, and a cable broadcast network.

The broadcast server 300 transmits the broadcast signal to the device 100. [ The broadcast signal is provided by a broadcast service provider, and the broadcast server 300 is a multi-channel video programming distributor (MVPD), which is a paid re-transmission service provider located in a broadcasting station such as KBS or MBC, For example, SK Broadband, Ole KT).

The broadcast signal includes media data including audio and / or video, and signaling information for signaling the media data.

At this time, the signaling information includes indication information indicating which medium the ESG data is transmitted through. The location of the ESG data is included in the system level signaling information.

According to one embodiment, the ESG data is defined as a separate service in the SLT (Service List Table). The ESG data may be included in the sltInetUrl element of the SLT. The device 100 confirms URL (Uniform Resource Locator) information on which the SGDD of the ESG is transmitted from the sltInetUrl element. The device 100 accesses the URL and receives the ESG data from the service guide server 500. [

According to another embodiment, the signaling information may include information indicating, for example, an IP address (P address) and a port number as connection information of the service guide server 500.

The communication network 400 may be a broadband network such as an IP (Internet Protocol) network or a mobile broadcasting network.

The service guide server 500 transmits the ESG data provided by the broadcast service provider to the device 100. The service guide server 500 may be located on the side of the broadcasting company or on the side of the paying retransmission provider. The ESG data includes time, version, and the like.

FIG. 3 is a flowchart illustrating an ESG data transmission method according to an embodiment of the present invention. FIG. 4 illustrates a conventional technique for comparison with the present invention, FIG. 5 illustrates an update unit according to an embodiment of the present invention, FIG. 6 illustrates an update unit according to another embodiment of the present invention, and FIG. 7 illustrates an update unit according to another embodiment of the present invention. At this time, description will be made with reference to the configuration of FIG.

Referring to FIG. 3, the electronic service guide server 500 generates a plurality of SGDUs in which the ESG is divided into predetermined update units (S101).

The broadcasting server 300 transmits a broadcasting signal including AV data and signaling information to the device 100 through the broadcasting network 200 (S103).

When the ESG reception trigger event occurs (S105), the device 100 extracts the location information of the ESG data from the signaling information received in the step S103 (S107).

At this time, the ESG reception trigger event may occur when the power of the device 100 is turned on.

The device 100 confirms the service guide server 500 based on the location information of the ESG data extracted (S107) (S109). Here, the location information of the ESG data may be a URL for accessing the service guide server 500.

The device 100 accesses the service guide server 500 which confirms (S109), transmits an SGDD request (S111), and receives an SGDD response from the service guide server 500 (S113). Here, the SGDD includes a URL and version information for receiving the SGDU.

The device 100 transmits an SGDU request to the service guide server 500 using the URL extracted from the SGDD received in step S113 (S115). Then, the SGDU response is received from the service guide server 500 (S117). Here, steps S111 to S117 are processes for initially receiving the ESG. In step S117, the device 100 receives a plurality of SGDUs constituting the ESG.

Generally, in ESG, broadcast content information and schedule information are generated before the broadcast date and are continuously changed on the day of broadcast. For example, program start time, program end time, program preview addition, and so on can be continuously changed.

The change information is transmitted in real time to the service guide server 500 by the broadcast provider or the broadcast program provider. The service guide server 500 determines whether the ESG has been changed (S119).

If it is determined in step S119 that the ESG has been changed, the service guide server 500 changes the corresponding SGDU among the plurality of SGDUs generated in step S101 (S121). At this time, the service guide server 500 increases the version of SGDD by +1 according to the ESG update (S121). The version is incremented by 1 for each change. Then, the service guide server 500 generates an ESG update unit, that is, a URL of the changed SGDU (S121).

When the ESG reception trigger event occurs (S123), the device 100 accesses the service guide server 500 to request SGDD (S125) and receives SGDD (S127). At this time, the device 100 compares the version included in the SGDD received (S127) with the previously stored version of the SGDU, and recognizes the change of the ESG if they do not match.

If the change of the ESG is recognized, the device 100 accesses the service guide server 500 to request an update of the SGDU (S129), and receives at least one changed SGDU in step S121 (S131).

The ESG reception trigger event may be repeated cyclically or non-periodically, and steps S125 to S131 are repeated.

Here, the ESG reception trigger event of step S123 may be various embodiments. According to one embodiment, when the listening period set in the device 100 arrives, an ESG reception trigger event is generated (S123).

According to another embodiment, when the channel is changed in the device 100, for example, when the user changes the channel with the remote controller, an ESG reception trigger event is generated (S123). In addition, the ESG reception trigger event may be set by the device manufacturer.

An HTTP (HyperText Transfer Protocol) request message is used in steps S115 and S129, and an HTTP response message is used in steps S117 and S131. In particular, the header of the HTTP request message includes 'Accept-Encoding' in steps S115 and S129. 'Accept-Encoding' is compression instruction information specified in the header, and specifically, is used to notify the service guide server 500 that the device 100 can perform encoding (compression) and decoding (decompression).

According to one embodiment, the 'Accept-Encoding' header may include a compressed file format such as Gzip using an algorithm called 'Deflate'. Then, the service guide server 500 compresses the SGDUs to Gzip using the Dip Plate. Then, the compressed file is included in the HTTP response message and transmitted to the device 100.

At this time, in step S131, only the changed SGDUs of update units other than the entire SGDUs constituting the ESG are received. Therefore, the network usage amount between the device 100 and the service guide server 500 is remarkably reduced compared with the conventional one. In addition, since only the changed SGDU is received in the device 100, the data throughput is reduced.

Referring to FIG. 4, conventionally, ESG for four days of channel 1 is composed of one SGDU (P1). If a change occurs in the 12/5-character broadcast service information of the channel 1, one SGDU (P3) containing the change content is transmitted to the device 100. [ That is, the SGDU (P3) of 40K is transmitted to the device 100 before or after the change.

On the other hand, according to the embodiment of the present invention, the SGDU is transmitted to the device 100 in units of update,

The update unit may be set to various embodiments, according to one embodiment, the update unit may be a broadcast date. For example, the daily broadcast date can be set as an update unit, such as three days before today, two days before today, one day before today, and today. In other words, fragments constituting broadcast service information of the corresponding broadcast date are generated as one SGDU per date. Therefore, an SGDU is generated for each date. At this time, the service guide server 500 may include four SGDU URLs in the SGDD, or may group and compress four SGDU URLs.

Referring to FIG. 5, an SGDU (10K) (P5) is generated for each day of 12/2, 12/3, 12/4, and 12/5 ESGs for channel 1 for four days. In step S115 of FIG. 3, SGDUs of four days may be grouped into SGDUs of 40K capacity and transmitted to the device 100. FIG.

Thereafter, when a change occurs in the 12/5 person broadcasting information, only the SGDU P7 including the 12K / 5-character changed broadcasting information of 10K capacity is transmitted to the device 100 in the step S131 of FIG. At this time, the service guide server 500 responds to the device 100 by including the URL of the SGDU (P7) in the SGDD in step S127 of FIG.

According to another embodiment, the update unit is a date, and is subdivided into morning and afternoon within the same unit. For example, you can set the broadcast date in the AM / PM three days before today, two AM / PM two AM / PM, one AM / PM one day before today, AM / PM each day. That is, fragments constituting broadcasting service information of the corresponding broadcasting day are generated as one SGDU every morning / afternoon. Therefore, an SGDU is generated for each day and morning / afternoon.

Referring to FIG. 6, the ESG for channel 1 for four days is divided into SGDUs 12/2 AM / PM, 12/3 AM / PM, 12/4 AM / PM, 12/5 AM / (5K) (P9) is generated. In step S117 of FIG. 3, SGDUs of four days can be grouped and compressed into SGDUs of 40K capacity and transmitted to the device 100. FIG.

Thereafter, when a change occurs in the 12/5 AM broadcast information, only the SGDU P11 including the broadcast information changed in 12/5 AM in the 5K capacity is transmitted to the device 100 in step S131 of FIG.

According to another embodiment, the update unit is subdivided into service (ID) units by date. Referring to FIG. 6, a 12-th SGDU of channel 1 is generated for each of n services (IDs).

The ESG for channel 1 for four days generates SGDU (1K) for n services (ID) for each day. In step S115 of FIG. 3, the SGDUs for 4 days are grouped and compressed (P13) into 4D * 4K capacity SGDUs and transmitted to the device 100. FIG.

Thereafter, when a change is made to the service of the 12/5 character ID1, only the SGDU (P15) including the changed broadcast information ID1 of 1K capacity is transmitted to the device 100 in the step S129 of FIG.

On the other hand, if the broadcast date is over, the change frequency of the broadcast content and the schedule is small. Therefore, the fragments constituting the broadcast schedule information of the past broadcast date except for today are generated as one SGDU, and the fragments constituting the broadcast schedule information of today's date are stored in the memory of the embodiment of FIGS. 5, 6, 7, SGDU.

8 is a hardware block diagram of a device to which an embodiment of the present invention can be applied, and shows a hardware configuration of the device 100 described with reference to Figs. 1 to 7. Fig.

8, a device 600 is comprised of hardware including a communications device 601, a memory device 603, an input device 605, a display 607, and at least one processor 609, A program executed in combination with hardware at a specified location is stored.

The communication device 601 is connected to the processor 6609 to receive a broadcasting signal through the broadcasting network 200 and receive the ESG data through the communication network 400. [

The memory device 603 is coupled to the processor 609 and stores a program that includes instructions that cause it to perform the configuration and / or methods in accordance with the embodiments described in FIGS. 1-7. The program is implemented in combination with hardware such as memory device 603 and processor 609 to implement the present invention.

The processor 609, in combination with hardware such as the memory device 603, implements the present invention.

The input device 605 is coupled to the processor 609 and is a means for user input operation in accordance with the embodiments described in Figures 1-7.

The display 607 is connected to the processor 609 and outputs data according to the embodiments described in Figs. 1 to 7 to the screen.

At this time, the input device 605 and the display 607 may be implemented as a single device.

FIG. 9 is a hardware block diagram of a service guide server to which an embodiment of the present invention can be applied, and shows a hardware configuration of the service guide server 500 described with reference to FIG. 1 to FIG.

9, the service guide server 700 includes a communication device 701, a memory 703, a storage device 705, and at least one processor 707. [ The communication device 701 is connected to at least one processor 707 to transmit and receive data. The memory 703 stores a program that is associated with at least one processor 707 and that includes instructions that cause the computer to perform the configuration and / or methods in accordance with the embodiments described in Figs. 1-7. The program is implemented in combination with hardware such as memory 703, storage device 705 and at least one processor 707 to implement the present invention.

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

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (15)

  1. A method for an electronic service guide server operating by at least one processor to transmit an electronic service guide to a device,
    Generating a plurality of service guide delivery units (SGDUs) constituting an electronic service guide in a predetermined update unit,
    Transmitting a plurality of service guide delivery units generated in update units to the device through a communication network; and
    Transmitting at least one modified service guide delivery unit to the device when at least one service guide delivery unit of the plurality of service guide delivery units is changed
    .
  2. The method of claim 1,
    Between the generating and transmitting to the device,
    Further comprising receiving a service guide delivery unit request from the device,
    Wherein the step of transmitting to the device comprises:
    Compressing the plurality of service guide delivery units using a compression algorithm included in the service guide delivery unit request, and
    Transmitting a compressed service guide delivery unit to the device
    .
  3. 3. The method of claim 2,
    Before the receiving step,
    Receiving a Service Guide Delivery Descriptor (SGDD) request from the device;
    Grouping the plurality of service guide delivery units, and
    Further comprising transmitting to the device a service guide delivery resolver including location information of the grouped service guide delivery unit,
    The service guide delivery unit request,
    And location information of the grouped service guide delivery unit.
  4. 4. The method of claim 3,
    Wherein the transmitting the modified service guide delivery unit comprises:
    Changing at least one service guide delivery unit based on broadcast change information received from a broadcast service provider,
    Receiving a service guide delivery resolver request from the device,
    Grouping the changed at least one service guide delivery unit,
    Transmitting a service guide delivery interpreter including location information of the grouped changed service guide delivery unit to the device,
    Receiving a service guide delivery unit request from the device,
    Compressing the grouped modified service guide delivery unit using the compression algorithm included in the service guide delivery unit request, and
    Transmitting the compressed modified service guide delivery unit to the device
    .
  5. 5. The method of claim 4,
    The service guide delivery interpreter request and the service guide delivery unit request may include:
    A Hyper Text Transfer Protocol (HTTP) request message,
    Wherein the service guide delivery interpreter and the service guide delivery unit comprise:
    And is delivered to the device via an HTTP response message.
  6. The method of claim 5,
    Wherein the compression algorithm comprises:
    Wherein the header information is contained in compression instruction information included in a header of an HTTP request message received from the device.
  7. The method of claim 1,
    Wherein the update unit comprises:
    Date, time zone, and service.
  8. A method for a device operating by at least one processor to receive an electronic service guide from an electronic service guide server,
    Transmitting a service guide delivery unit (SGDU) request constituting an electronic service guide to the electronic service guide server through a communication network;
    Receiving, from the electronic service guide server, a plurality of service guide delivery units generated on a predetermined update unit basis through the communication network;
    Transmitting a service guide delivery unit request to the electronic service guide server when an electronic service guide reception trigger event occurs, and
    Receiving, from the electronic service guide server, at least one service delivery unit modified from among the plurality of service delivery units
    .
  9. 9. The method of claim 8,
    Wherein the receiving of the plurality of service guide delivery units comprises:
    Wherein the plurality of service guide delivery units receive the compressed data,
    Wherein the receiving the modified at least one service delivery unit comprises:
    And receiving the changed service delivery unit individually.
  10. 9. The method of claim 8,
    Wherein the step of transmitting a service guide delivery unit request to the electronic service guide server comprises:
    Transmitting a Service Guide Delivery Descriptor (SGDD) request to the electronic service guide server and receiving a service guide delivery resolver from the electronic service guide server; and
    Requesting the electronic service guide server to update the service guide delivery unit based on the information obtained from the service guide delivery interpreter
    .
  11. 11. The method of claim 10,
    The method of claim 1,
    And requests the update of the service guide delivery unit when the version index included in the service guide delivery interpreter is larger than the previously stored version index.
  12. 9. The method of claim 8,
    Wherein the step of transmitting the service guide delivery unit constituting the electronic service guide comprises:
    Obtaining information of the electronic service guide server from signaling information received through a broadcasting network,
    Sending a Service Guide Delivery Descriptor (SGDD) request to the electronic service guide server;
    Receiving a service guide delivery interpreter including information of the plurality of service guide delivery units from the electronic service guide server, and
    Transmitting a service guide delivery unit request to the electronic service guide server based on the information included in the service guide delivery interpreter
    .
  13. An apparatus for providing an electronic service guide,
    A communication device for transmitting and receiving data to and from a device connected via a communication network,
    A memory for storing a program for providing an electronic service guide at the request of the device, and
    And at least one processor for executing the program,
    The program includes:
    A plurality of service guide delivery units (SGDUs) constituting the electronic service guide are generated in predetermined update units,
    Transmitting the plurality of service guide delivery units to the device according to a first request of the device,
    Changing at least one service guide delivery unit among the plurality of service guide delivery units based on broadcast change information acquired from a broadcast service provider,
    Instructions for sending to the device at least one service guide delivery unit modified in accordance with a second request of the device.
  14. The method of claim 13,
    Wherein the update unit comprises:
    Date, time zone, and service,
    The program includes:
    And sending a Service Guide Delivery Descriptor (SGDD) containing information of the service guide delivery unit of the update unit to the device.
  15. The method of claim 14,
    The program includes:
    Instructions to increase the version index of the service guide delivery interpreter by a predetermined unit after changing the service guide delivery unit and to transmit the service guide delivery resolver including the incremented version index to the device,
    The second request,
    Wherein the device is received from the device that verified the incremented version index.
PCT/KR2018/015442 2017-12-08 2018-12-06 Method and apparatus for transmitting and receiving electronic service guide WO2019112346A1 (en)

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KR10-2017-0168599 2017-12-08
KR10-2018-0156329 2018-12-06
KR1020180156329A KR20190068457A (en) 2017-12-08 2018-12-06 Method and apparatus for transmitting and receiving electronic service guide

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Citations (5)

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US20120288031A1 (en) * 2011-05-12 2012-11-15 Nokia Corporation Providing Signaling Information in an Electronic Service Guide
KR101277195B1 (en) * 2005-11-07 2013-06-19 삼성전자주식회사 Methdo for transmitting/receiving a service guide in a mobile broadcasting system and constructing service guide context
CN103974128A (en) * 2013-01-24 2014-08-06 中兴通讯股份有限公司 Live broadcast playback method and system for mobile multimedia broadcasting service, and mobile terminal

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KR20040084932A (en) * 2002-02-21 2004-10-06 후지쯔 가부시끼가이샤 A method and system for internet content acquisition according to a program guide
KR101277195B1 (en) * 2005-11-07 2013-06-19 삼성전자주식회사 Methdo for transmitting/receiving a service guide in a mobile broadcasting system and constructing service guide context
KR20080047229A (en) * 2006-11-24 2008-05-28 엘지전자 주식회사 Service system and method of digital broadcasting, receiving method and receiver
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