KR101892278B1 - Multicast System and Multicast Service Method - Google Patents

Abstract

The present invention relates to a multicast system and a service method.
A multicast system supporting a multicast service according to the present invention is a multicast system supporting a multicast service. The multicast system includes a router and a plurality of terminals connected to the router, When the version information of the setting information of at least one of the terminals is higher than the version information of the setting information of another terminal, the setting information of the terminal including the lower setting information You can update to a higher version.

Description

Technical Field [0001] The present invention relates to a multicast system and a multicast service method,

The present invention relates to a multicast system and a service method.

The multicast method refers to a method of simultaneously transmitting data to a plurality of opponents in a one-to-many format, such as receiving data simultaneously from a plurality of addresses registered in packet communication.

In the conventional multicast scheme, there is a problem that the time spent for updating the setting information of a plurality of terminals is excessively long.

It is an object of the present invention to provide a multicast system and a service method for easily and quickly updating setting information of a plurality of terminals connected to an inherent equipment.

A multicast system supporting a multicast service according to the present invention is a multicast system supporting a multicast service. The multicast system includes a router and a plurality of terminals connected to the router, When the version information of the setting information of at least one of the terminals is higher than the version information of the setting information of another terminal, the setting information of the terminal including the lower setting information You can update to a higher version.

In addition, the setting information may include at least one of channel information, audio setting information, and desktop information.

The plurality of terminals include first, second and third terminals, and the version of the setting information of the first terminal is higher than the version of the setting information of the second and third terminals, When the first terminal joins a multicast group including the second and third terminals, the first terminal transmits the version information of its own setting information to at least one of the second and third terminals The terminal receiving the version information of the setting information from the first terminal among the second and third terminals requests the first terminal to transmit the setting information and the first terminal transmits the setting information of the first terminal to the first terminal And may transmit to the second and third terminals via the router.

The plurality of terminals include first, second and third terminals, the version of the setting information of the first terminal is the same as the version of the setting information of the second and third terminals, When joining to a multicast group including the second and third terminals, the first terminal transmits version information of its own setting information to the second and third terminals, , The third terminal may not respond to the setting information transmitted by the first terminal.

The plurality of terminals include first, second and third terminals, the version of the setting information of the first terminal is lower than the version of the setting information of the second and third terminals, Terminal joins a multicast group including the second and third terminals, the first terminal transmits the version information of its own setting information to at least one of the second and third terminals And the terminal receiving the version information of the setting information from the first terminal among the second and third terminals may transmit the setting information of the terminal to the first terminal via the router.

The plurality of terminals include first, second and third terminals included in the same multicast group, the versions of the setting information of the first, second and third terminals are identical to each other, When the first terminal is provided with setting information of a higher version, the first terminal updates the setting information to a higher version by leaving the multicast group, and then the first terminal joins the multicast group, And may transmit the setting information to the second and third terminals via the router.

A multicast service method according to the present invention comprises the steps of forming a multicast group by connecting a plurality of terminals to a router supporting a multicast service to form a multicast group, And updating the setting information of a plurality of terminals of the multicast group, wherein the updating step includes a step of updating setting information of a terminal that is additionally joined to the multicast group When the version information is higher than the version information of the setting information of the other terminal, the setting information of the terminal that has joined the further terminal is transmitted to another terminal, and the setting of the terminal further joining the multicast group If the version information of the information is lower than the version information of the setting information of the other terminal, When the version information of the setting information of the terminal joining the multicast group is the same as the version information of the setting information of the other terminal, And may maintain a version of the setting information of the plurality of terminals.

In addition, the setting information may include at least one of channel information, audio setting information, and desktop information.

The plurality of terminals include first, second and third terminals, and the version of the setting information of the first terminal is higher than the version of the setting information of the second and third terminals, When the first terminal joins a multicast group including the second and third terminals, the first terminal transmits the version information of its own setting information to at least one of the second and third terminals The terminal receiving the version information of the setting information from the first terminal among the second and third terminals requests the first terminal to transmit the setting information and the first terminal transmits the setting information of the first terminal to the first terminal And may transmit to the second and third terminals via the router.

The plurality of terminals include first, second and third terminals, the version of the setting information of the first terminal is the same as the version of the setting information of the second and third terminals, When joining to a multicast group including the second and third terminals, the first terminal transmits version information of its own setting information to the second and third terminals, 2, and 3 may not respond to the setting information transmitted by the first terminal.

The plurality of terminals include first, second and third terminals, the version of the setting information of the first terminal is lower than the version of the setting information of the second and third terminals, Terminal joins a multicast group including the second and third terminals, the first terminal transmits the version information of its own setting information to at least one of the second and third terminals And the terminal receiving the version information of the setting information from the first terminal among the second and third terminals may transmit the setting information of the terminal to the first terminal via the router.

The multicast system and the service method according to the present invention can update the setting information more easily and quickly by updating the setting information using the version information of the setting information of a plurality of terminals connected to the inherent equipment.

1 is a diagram for explaining a configuration of a multicast system;
2 is a diagram for explaining the configuration and operation of a terminal applied to the present invention; And
FIGS. 3 to 11 are diagrams for explaining a method of updating setting information.

Hereinafter, a multicast system and a service method according to the present invention will be described in detail with reference to the accompanying drawings.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood that the present invention is not intended to be limited to the specific embodiments but includes all changes, equivalents, and alternatives falling within the spirit and scope of the present invention.

In describing the present invention, the terms first, second, etc. may be used to describe various components, but the components may not be limited by the terms. The terms may only be used for the purpose of distinguishing one element from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The term " and / or " may include any combination of a plurality of related listed items or any of a plurality of related listed items.

When an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may be present in between Can be understood. On the other hand, when it is mentioned that an element is "directly connected" or "directly connected" to another element, it can be understood that no other element exists in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions may include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used interchangeably to designate one or more of the features, numbers, steps, operations, elements, components, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries can be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are, unless expressly defined in the present application, interpreted in an ideal or overly formal sense .

In addition, the following embodiments are provided to explain more fully to the average person skilled in the art. The shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

1 is a diagram for explaining a configuration of a multicast system.

Referring to FIG. 1, the multicast system 10 according to the present invention may include a router 11 and a plurality of terminals 100 to 105 connected to the router 11.

The multicast system 10 according to the present invention can support a multicast standard to support a multicast service. In addition, the router 11 can support a multicast service.

The router 11 can supply a broadcast signal supplied from the outside to a plurality of terminals 100 to 105 in accordance with a multicast service. Here, the number of terminals 100 to 105 connected to one router 11 may vary.

A plurality of terminals 100 to 105 can receive broadcast signals from the router 11 and display them on the screen. These terminals 100 to 105 may be a broadcast signal receiver (TV).

In this specification, a broadcast signal receiver (TV) is described as an example of a terminal, but the present invention can also be applied to a mobile communication terminal. For example, the present invention can be applied to a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like.

In the multicast system 11 according to the present invention, when the version information of the setting information of at least one of the plurality of terminals 100 to 105 is higher than the version information of the setting information of other terminals, The terminal 100 may update the setting information of the terminals 100 to 105 to a higher version. This will be described in more detail below.

2 is a diagram for explaining the configuration and operation of a terminal applied to the present invention. The broadcast signal receiver described as an example of a terminal herein is an intelligent broadcast signal receiver that adds a computer support function to a broadcast reception function, for example, and is equipped with an internet function while being faithful to a broadcast reception function, It can be equipped with a more convenient interface such as a space remote controller. Also, it can be connected to the Internet and a computer by the support of a wired or wireless Internet function, and can perform functions such as e-mail, web browsing, banking or game. A standardized general-purpose OS can be used for these various functions.

Accordingly, the broadcast signal receiver described in the present invention can perform various user-friendly functions because various applications can be freely added or deleted on a general-purpose OS kernel, for example. More specifically, the broadcast signal receiver may be, for example, a network TV, an HBBTV, a smart TV, or the like, and may be applied to a smartphone in some cases.

2, the terminals 100 to 105 according to the present invention include a broadcast receiver 105Q, an external device interface unit 135Q, a storage unit 140Q, a user input interface unit 150Q, a controller 170Q, A display unit 180Q, an audio output unit 185Q, a power supply unit 190Q, and a photographing unit (not shown). The broadcast receiving unit 105Q may include a tuner 110Q, a demodulating unit 120Q, and a network interface unit 130Q.

Of course, the tuner 110Q and the demodulator 120Q may be provided, but the network interface 130Q may not be included. Alternatively, the tuner 110Q and the demodulator 120Q may be included, It is also possible to design it not to include the demodulator 120Q.

The tuner 110Q selects an RF broadcast signal corresponding to a channel selected by the user or all previously stored RF (Radio Frequency) broadcast signals. Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

The demodulator 120Q receives the digital IF signal DIF converted by the tuner 110Q and performs a demodulation operation.

For example, when the digital IF signal output from the tuner 110Q is of the ATSC scheme, the demodulator 120Q performs 8-VSB (8-Vestigal Side Band) demodulation, for example. Also, the demodulator 120Q may perform channel decoding. The demodulator 120Q includes a trellis decoder, a de-interleaver, and a Reed Solomon decoder for performing trellis decoding, deinterleaving, and lead decoding. Solomon decoding can be performed.

The demodulator 120Q may demodulate and decode the channel, and then output the stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed.

The stream signal output from the demodulation unit 120Q may be input to the control unit 170Q. The control unit 170Q performs demultiplexing, video / audio signal processing, and the like, and then outputs an image to the display unit 180Q and audio to the audio output unit 185Q.

The external device interface unit 135Q can connect the external device to the terminals 100 to 105. [ To this end, the external device interface unit 135Q may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

On the other hand, the external device interface unit 135Q can receive the application or application list in the adjacent external device, and can transmit the application or application list to the control unit 170Q or the storage unit 140Q.

The network interface unit 130Q provides an interface for connecting the terminals 100 to 105 to a wired / wireless network including the Internet network.

The network interface unit 130Q can transmit or receive data to another user or another electronic device via the network to which it is connected or another network linked to the connected network.

The network interface unit 130Q is connected to the router 11 described in FIG. 1, receives data from the router 11, and transmits the data to the router 11. FIG.

In addition, the network interface unit 130Q is capable of receiving data and broadcast signals for the multicast service from the router 11.

If the network interface unit 130Q receives a broadcast signal from the router 11, the network interface unit 130Q may transmit the broadcast signal received from the router 11 to the tuner 110Q .

In addition, the network interface unit 130Q can be an Ethernet port applicable to a LAN environment.

The storage unit 140Q may store a program for each signal processing and control in the control unit 170Q or may store a signal-processed video, audio, or data signal.

The storage unit 140Q may also function to temporarily store video, audio, or data signals input from the external device interface unit 135Q or the network interface unit 130Q. In addition, the storage unit 140Q can store information on a predetermined broadcast channel through the channel memory function.

In addition, the storage unit 140Q may store setting information received from the router 11 through the network interface unit 130Q.

FIG. 2 shows an embodiment in which the storage unit 140Q is provided separately from the controller 170Q, but the scope of the present invention is not limited thereto. The storage unit 140Q may be included in the controller 170Q.

The user input interface unit 150Q transmits a signal input by the user to the controller 170Q or a signal from the controller 170Q to the user.

For example, the user input interface unit 150Q may turn on / off the power from the remote control device 200Q, select a channel, select a channel from the remote control device 200Q according to various communication methods such as an RF (Radio Frequency) communication method, Or a control signal from the control unit 170Q to the remote control device 200Q.

For example, the user input interface unit 150Q can transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 170Q.

For example, the user input interface unit 150Q may transmit a control signal input from a sensing unit (not shown) that senses a user's gesture to the control unit 170Q, or may sense a signal from the control unit 170Q (Not shown). Here, the sensing unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The control unit 170Q demultiplexes the input stream or processes the demultiplexed signals through the tuner 110Q or the demodulation unit 120Q or the external device interface unit 135Q to generate a signal for video or audio output Can be generated and output.

The video signal processed by the controller 170Q is input to the display unit 180Q and can be displayed as an image corresponding to the video signal. The video signal processed by the controller 170Q may be input to the external output device through the external device interface unit 135. [

The audio signal processed in the control unit 170Q may be output to the audio output unit 185Q. In addition, the voice signal processed in the controller 170Q may be input to the external output device through the external device interface unit 135Q.

Also, the controller 170Q can control the terminals 100 to 105 according to a user command or an internal program input through the user input interface unit 150Q.

For example, the control unit 170Q controls the tuner 110Q so that a signal of a selected channel is input according to a predetermined channel selection command received through the user input interface unit 150Q. Then, video, audio, or data signals of the selected channel are processed. The control unit 170Q allows the display unit 180Q or the audio output unit 185Q to output the video or audio signal processed by the user through the channel information selected by the user.

For example, the control unit 170Q may be connected to an external device, such as a camera or a camcorder, input through the external device interface unit 135Q according to an external device video playback command received through the user input interface unit 150Q So that the video signal or the audio signal of the display unit 180Q or the audio output unit 185Q can be outputted.

Meanwhile, the control unit 170Q may control the display unit 180Q to display an image. For example, a broadcast image input through the tuner 110Q, an external input image input through the external device interface unit 135Q, an image input through the network interface unit, or an image stored in the storage unit 140Q , And display on the display unit 180Q.

The control unit 170Q can change the setting values of the terminals 100 to 105 according to the setting information received from the router 11 through the network interface unit 130Q.

The control unit 170Q may compare the version information of the setting information received from the router 11 through the network interface unit 130Q with the version information of the setting information stored in the storage unit 140Q.

The control unit 170Q may transmit the setting information stored in the storage unit 140Q to another terminal according to the comparison result of the setting information or store the received setting information in the storage unit 140Q, It is possible to update. This will be described in more detail below.

The display unit 180Q converts an image signal, a data signal, an OSD signal processed by the control unit 170Q or a video signal and a data signal received from the external device interface unit 135Q into R, G, and B signals, respectively Thereby generating a driving signal.

The display unit 180Q may be a PDP, an LCD, an OLED, a flexible display, a 3D display, or the like. Preferably, the display unit 180Q is a plasma display panel (PDP) in order to use the pen touch method.

The audio output unit 185Q receives the signal processed by the control unit 170Q and outputs it as a voice. The voice output unit 185Q may be implemented by various types of speakers.

In order to detect the gesture of the user, a sensing unit (not shown) having at least one of a touch sensor, a voice sensor, a position sensor, and an operation sensor may be further included in the terminals 100 to 105 have. A signal sensed by a sensing unit (not shown) may be transmitted to the controller 170Q through the user input interface unit 150Q.

On the other hand, a photographing unit (not shown) for photographing a user may be further provided. The image information photographed by the photographing unit (not shown) may be input to the control unit 170Q.

The control unit 170Q may sense the gesture of the user by combining the images captured from the photographing unit (not shown) or the sensed signals from the sensing unit (not shown), respectively.

The power supply unit 190Q supplies the corresponding power supply throughout the terminals 100 to 105.

The remote control device 200Q transmits the user input to the user input interface unit 150Q. To this end, the remote control apparatus 200 can use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like.

Also, the remote control device 200Q can receive the video, audio, or data signal output from the user input interface unit 150Q and display it on the remote control device 200Q or output voice or vibration.

FIGS. 3 to 11 are diagrams for explaining a method of updating setting information. Hereinafter, the description of the parts described in detail above will be omitted.

FIG. 3 shows an example of setting information of a terminal.

Referring to FIG. 3, the setting information of the terminal may include at least one of channel information, voice setting information, and desktop information.

The channel information may include various information about the channel such as the preferred channel information, the restricted channel information, the movie channel information, and the sports channel information.

The voice setting information may include various information on the voice, such as left / right voice size information.

The type of setting information in the present invention is not limited to Fig. For example, the setting information may further include screen information such as contrast setting information, brightness information, and the like.

In the present invention, the setting information may be a Cloning Image File used in the Multicast service. Hereinafter, various information such as Cloning Image File is collectively used as setting information.

In the multicast system according to the present invention, when the version information of the setting information of at least one of the plurality of terminals connected to the router 11 is higher than the version information of the setting information of the other terminal, the setting information according to the lower version is included And update the setting information of the remaining terminals to a higher version.

For example, as in the case of FIG. 4, a plurality of terminals may be connected to the router 11 to form a multicast group (S400).

Then, it is determined whether a new terminal is joined (S410).

As a result of the determination, if the new terminal joins the pre-formed multicast group, the version of the setting information of the terminal to be newly joined can be checked (S420).

Thereafter, it can be determined whether the version of the setting information of the newly joined terminal is a higher version (S430).

As a result of the determination, if the version of the setting information of the newly joined terminal is a higher version, the setting information of the terminals included in the existing multicast group may be updated using the setting information of the newly joined terminal (S440).

The updating method of the terminal setting information will be described in detail as follows.

5 to 6, the second, third and fourth terminals 101, 102 and 103 are connected to the router 11 to form a multicast group (S400), and the second, third and fourth terminals Suppose that the version of the setting information of the first to eighth processors 101, 102, and 103 is 1.5. It is also assumed that the version of the setting information of the first terminal 100 is 1.6, which is a version higher than 1.5, which is the version of the setting information of the second, third, and fourth terminals 101, 102,

Here, the IP addresses of the first, second, third, and fourth terminals 100 to 103 may be IP addresses restricted to Localsubnet in the Class D IP (224.0.0.0/16) assigned to the Multicast Protocol. For example, the IP address of the first terminal 100 may be 192.168.0.1, the IP address of the second terminal 101 may be 192.168.0.3, and the IP address of the third terminal 102 may be 192.168. 0.5, and the IP address of the fourth terminal 103 may be 192.168.0.6.

In FIG. 1, only a case where a plurality of terminals are connected to the router 11 to form a multicast group is described. However, even when the number of terminals connected to the router 11 is one, a multicast group is formed . That is, in this case, the number of terminals included in the multicast group is one. For example, when a total of 10 terminals are connected to the router 11 to form a multicast group, when 9 terminals are powered off, one terminal remains in the multicast group.

In addition, it is possible to automatically depart from the multicast group when the terminal is logged off or powered off.

When the first terminal 100 including the setting information of the upper version 1.6 is connected to the router 11 and joins to the multicast group in step S410, the first terminal 100 joined to the new multicast group And may transmit its version information to at least one of the second, third, and fourth terminals 101 to 103 via the router 11.

The terminal receiving the version information of the setting information of the first terminal 100 from the first terminal 100 of the second, third, and fourth terminals 101 to 103 may receive the version information of the setting information of the first terminal 100 (S620) whether or not it is a higher version than the version information of its own setting information.

The terminal receiving the version information of the setting information from the first terminal 100 of the second, third and fourth terminals 101 to 103 can request the first terminal 100 to transmit the setting information (S630) have.

In addition, the first terminal 100 may transmit its setting information to other terminals, i.e., the second, third, and fourth terminals 101, 102, and 103 in response to the transmission request of the setting information (S631).

In addition, the second, third, and fourth terminals 101 to 103 receiving the setting information of the upper version can update their own setting information (S632) using the upper version setting information.

For example, assume that the second, third, and fourth terminals 101 to 103 receive the upper-level setting information. In this case, the second, third, and fourth terminals 101 to 103 may store the received setting information in their own storage unit 140Q. Thereafter, during the log-off process of the second, third and fourth terminals 101 to 103 or during the power-off process or the next power-on process, It is possible to update its own setting information by using the setting information. That is, the terminal receiving the setting information of the upper version does not immediately update the terminal, but stores the upper-level setting information received in the storage unit 140Q first, and then the user logs off the terminal, It is possible to update the setting information in the process of terminating the terminal or turning on the terminal and then operating the terminal.

This update method can be applied to both of the following.

Here, the first terminal 100 can transmit the version information of its own setting information to the second, third, and fourth terminals 101 to 103 sequentially. For example, the first terminal 100 can sequentially transmit the version information of its own setting information from the second terminal 101 to the third terminal 102 and the fourth terminal 103. Here, the second terminal 101, which has first received the version information of the setting information from the first terminal 100, determines that the version information of the setting information of the second terminal 101 is lower than the version information of the setting information of the first terminal 100 (S610). Then, the second terminal 101 may request the first terminal 100 to transmit a higher version of the setting information. Then, the first terminal 100 may transmit an upper version of the setting information to the second terminal 101 in response to the request of the second terminal 101. In addition, the version information of the setting information of the second, third, and fourth terminals 101, 102, 103 forming the multicast group before joining by the first terminal 100 may all be the same. Accordingly, the first terminal 100 can transmit the higher-version setting information to the third, fourth, and terminals 102 and 103 as well as the second terminal 101 in response to the request of the second terminal 101 .

Alternatively, the first terminal 100 can transmit version information of its own setting information to the second, third, and fourth terminals 101 to 103 at the same time. In this case, all of the second, third, and fourth terminals 101 to 103 can receive the version information of the setting information from the first terminal 100, (S610) that the version information is lower than the version information of the setting information. Then, the second, third, and fourth terminals 101 to 103 can request the first terminal 100 to transmit a higher version of the setting information. Here, the first terminal 100 may transmit a request to the second, third, and fourth terminals 101 to 103 via the router 11 regardless of whether a request is received from any of the second, third, and fourth terminals 101 to 103 Version setting information can be transmitted.

Here, a method for updating the setting information of the first terminal 100 to a higher version of the version 1.6 is as follows.

It is possible for the user to access the first terminal 100 and directly update the setting information of the first terminal 100 to a higher version while storing the upper version setting information in a memory means such as a USB memory.

Alternatively, it is possible that the first terminal 100 accesses a server or the like and downloads (downloads) setting information of a higher version.

On the other hand, the version of the setting information of the second, third and fourth terminals 101, 102 and 103 is 1.6 and the version of the setting information of the first terminal 100 is the second, ) Is 1.5, which is a version lower than 1.6, which is the version of the setting information.

In this case, the terminal that has received the version information of the setting information from the first terminal 100 of the second, third, and fourth terminals 101 to 103 receives the version information received from the first terminal 100 in step S620 of FIG. 1 < / RTI > setting information of the terminal 100 is lower than the setting information of the terminal 100 itself.

The terminal receiving the version information of the setting information from the first terminal 100 of the second, third and fourth terminals 101 to 103 transmits the setting information of the first terminal 100, Information may be transmitted to the first terminal 100 through the router 11 (S641).

In this case, the first terminal 100 may update its own setting information using the received upper-level setting information (S642).

The first terminal 100 sequentially transmits the version information of its setting information to the second, third and fourth terminals 101 to 103 and the second terminal 100 transmits the version information of its own setting information to the first terminal 101 First, when receiving the version information of the setting information, the second terminal 101 confirms that the version information of the setting information of the second terminal 101 is higher than the version information of the setting information of the first terminal 100 (S610) Then, the second terminal 101 can transmit the higher-version setting information it has to the first terminal 100.

Alternatively, when the first terminal 100 transmits the version information of its own setting information to the second, third, and fourth terminals 101 to 103 at the same time, the terminal 102 of the second, third, and fourth terminals 101 to 103 The terminal receiving the version information of the setting information of the first terminal 100 may transmit the higher version setting information stored in the terminal 100 to the first terminal 100. [

It is assumed that the versions of the setting information of the second, third and fourth terminals 101, 102 and 103 and the version of the setting information of the first terminal 100 are the same.

In this case, the terminal that has received the version information of the setting information from the first terminal 100 of the second, third, and fourth terminals 101 to 103 transmits the setting information of the first terminal 100 in step S640 of FIG. 6 It can be determined that the version is the same as the version information of the setting information of the user.

In this case, it is possible for the second, third and fourth terminals 101 to 103 to have no response (S650) state without transmitting a signal to the first terminal 100. [

In this case, the first terminal 100 waits for a response from another terminal for a predetermined waiting time (for example, several to several tens of seconds), and when the predetermined waiting time exceeds the predetermined waiting time, , And 4 the version information of the setting information of the terminals 101 to 103 is the same as the version information of the own setting information. That is, when the first terminal 100 enters a new multicast group, it does not transmit its own setting information in the case where there is no response from other terminals, and keeps the version without updating its own setting information .

On the other hand, the terminal receiving the setting information of the upper version can update the setting information to the higher version before logoff or power off.

For example, in a state where the second, third, and fourth terminals 101 to 103 form a multicast group, while the user is watching a predetermined image using the second terminal 101, The first terminal 100 joins the multicast group.

In this case, the second terminal 101 can display the update information 700 on the display unit 180Q under the control of the controller 170Q. For example, it is possible to display update information 700 on the screen, including information indicating that the current setting information is being updated and information such as estimated time that is used for the update.

Alternatively, the second terminal 101 may display, on the display unit 180Q, information for selecting whether or not to update the user.

For example, as in the case of FIG. 8, a selection window 800 for selecting whether or not to perform a current update on the screen can be displayed.

If the user selects "Yes ", the update is executed. If the user selects" No ", the second terminal 101 is logged off, the power is turned off, The update can be executed.

FIG. 9 shows an example of a change in the screen display according to the updating of the setting information.

For example, when the setting information of the second terminal 101 is version 1.5, the first, second, third, fourth, and fifth menus 910 to 950 (for example, ) May be displayed.

In this state, in the second terminal 101, a higher version of the setting information than that of the first terminal 100 can be received, so that the setting information of the second terminal 101 can be updated to a higher version. In this case, as in the case of FIG. 9B, the second menu 990 includes not only the first, second, third, fourth, and fifth menus 910 to 950, but also a sixth menu 960 may be further displayed.

In the case of FIG. 9, the first desktop 900 according to the lower version setting information and the second desktop 990 according to the upper version setting information are different. If the setting information of the upper version and the setting information of the lower version are the same, the setting information may be updated, but the desktop may not be changed.

In addition, although FIG. 9 shows only a case in which the menu displayed when the setting information is updated to a higher version is displayed, it is also possible that the menu displayed at the time of updating may be reduced, or that the displayed menu is not changed, The channel order, or the channel number may be changed.

Meanwhile, a case where the setting information of one of the terminals included in the multicast group is updated according to an upper-level setting information supplied from the outside will be described below. Hereinafter, the description of the parts described in detail above will be omitted.

For example, as in the case of FIGS. 10 to 11, the first, second, third and fourth terminals 100, 101, 102 and 103 are connected to the router 11 to form a multicast group (S400) , And the versions of the setting information of the first, second, third, and fourth terminals 100, 101, 102, and 103 are all equal to 1.5.

Here, it is possible to determine whether or not an upper version of the setting information is received in at least one of the plurality of terminals, for example, the first terminal 100 (S800). For example, the user can update the setting information of the first terminal 100 to a higher version by directly connecting the first terminal 100 with a storage means such as a USB memory, which stores the upper version of the setting information. Alternatively, the first terminal 100 may access a server or the like and receive an upper version of the setting information. Alternatively, it is also possible for the user to transmit the higher-version setting information to the first terminal 100 using another terminal not included in the multicast group.

If the setting information of the upper version 1.6 is supplied to the first terminal 100 as a result of the determination in the first terminal 100, the first terminal 100 may leave the multicast group (S810).

Thereafter, the first terminal 100 deviating from the multicast group can update (S820) using the received upper-level setting information.

Thereafter, the first terminal 100 that has updated the setting information can join the multicast group again (S830).

Then, the first terminal 100 joining the multicast group may transmit the setting information of the upper version to the second, third, and fourth terminals 101 to 103 including the lower version setting information (S840).

Then, the second, third, and fourth terminals 101 to 103 may update using the setting information received from the first terminal 100 through the router 11, respectively.

In the conventional multicast system according to the present invention, the user must individually access each terminal and update setting information, respectively. In contrast, according to the present invention, when the user updates the setting information of one terminal in the multicast system, It is possible to reduce the time required for the updating of the setting information.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

It should be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, And all changes or modifications derived from equivalents thereof should be construed as being included within the scope of the present invention.

Claims (11)

In a multicast system supporting a multicast service,
Router; And
A plurality of terminals connected to the router;
Lt; / RTI >
When the version information of the setting information of at least one of the plurality of terminals is higher than the version information of the setting information of another terminal, the setting of the terminal including the lower version of the setting information Update the information to a higher version,
Wherein the plurality of terminals comprise first, second and third terminals,
The version of the setting information of the first terminal is higher than the version of the setting information of the second and third terminals,
When the first terminal joins a multicast group including the second and third terminals,
The first terminal transmits version information of its setting information to at least one of the second and third terminals,
Wherein the terminal having received the version information of the setting information from the first terminal among the second and third terminals requests the first terminal to transmit the setting information,
And the first terminal transmits its setting information directly to the second and third terminals via the router. In a multicast system supporting a multicast service,
Router; And
And a plurality of terminals connected to the router,
When the version information of the setting information of at least one of the plurality of terminals is higher than the version information of the setting information of the other terminals, Update the information to a higher version,
Wherein the plurality of terminals comprise first, second and third terminals included in the same multicast group, the versions of the setting information of the first, second and third terminals are equal to each other,
When the higher-version setting information is supplied to the first terminal,
The first terminal leaves the multicast group and updates the setting information to a higher version,
The first terminal joins the multicast group and directly transmits its setting information to the second and third terminals via the router. delete In a multicast system supporting a multicast service,
Router; And
And a plurality of terminals connected to the router,
When the version information of the setting information of at least one of the plurality of terminals is higher than the version information of the setting information of another terminal, the setting of the terminal including the lower version of the setting information Update the information to a higher version,
Wherein the plurality of terminals comprise first, second and third terminals,
The version of the setting information of the first terminal is the same as the version of the setting information of the second and third terminals,
When the first terminal joins a multicast group including the second and third terminals,
The first terminal directly transmits the version information of its setting information to the second and third terminals,
And the second and third terminals do not respond to the setting information transmitted by the first terminal. In a multicast system supporting a multicast service,
Router; And
And a plurality of terminals connected to the router,
When the version information of the setting information of at least one of the plurality of terminals is higher than the version information of the setting information of another terminal, the setting of the terminal including the lower version of the setting information Update the information to a higher version,
Wherein the plurality of terminals comprise first, second and third terminals,
The version of the setting information of the first terminal is lower than the version of the setting information of the second and third terminals,
When the first terminal joins a multicast group including the second and third terminals,
Wherein the first terminal transmits version information of its setting information to at least one of the second and third terminals,
Wherein the terminal receiving the version information of the setting information from the first terminal among the second and third terminals directly transmits the setting information of its own to the first terminal via the router. The method according to any one of claims 1, 2, 4, and 5,
Wherein the setting information includes at least one of channel information, voice setting information, and desktop information. delete delete delete delete delete

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