KR20110037669A - A method of controlling broadcast receiver booting and a digital broadcast receiver - Google Patents

Abstract

PURPOSE: A broadcasting receiver booting control method and digital broadcast receiver are provided to convert a channel by a channel manager module of a legacy TV module and to supply the desired response speed to a user. CONSTITUTION: A power-on sequence of a legacy TV module is performed(S710). A channel is selected to detect operating system booting and channel information selection during the power-on sequence of an IPTV module(S720). The legacy TV module is zapped by using a user interface(S730). A screen mute is released and the user input operation is queued(S740).

Description

A method of controlling broadcast receiver booting and a digital broadcast receiver

The present invention relates to a broadcast receiver boot control method and a digital broadcast receiver, and more particularly, to a broadcast receiver boot control method and a digital broadcast receiver for controlling booting of a digital broadcast receiver.

Conventional broadcast receivers are serviced in such a manner that content produced by a broadcaster is transmitted through a radio wave transmission medium such as terrestrial, cable, or satellite broadcasting, and a user views the receiver through a receiver capable of receiving the respective delivery media. .

However, as digital-based digital broadcasting technology has been developed and commercialized in existing analog broadcasting, real-time broadcasting, contents on demand, games, and news using Internet networks connected to homes in addition to existing radio waves or wired cable media. It is now possible to provide a variety of content services to the user.

An example of providing a content service using the Internet network is IPTV (Internet Protocol TV). The IPTV transmits various information services, video contents, and broadcasts through an internet network and provides them to the receiver of the user. The Internet network may be implemented on various types of networks such as an optical cable network, a coaxial cable network, a fiber to the home (FTTH), a telephone network, and a wireless network based on an Internet Protocol (IP).

In the case of the service using the Internet network as described above, unlike general terrestrial broadcasting, the interactivity may be added, and the user may watch a content service that he / she wants to see at a convenient time.

An object of the present invention is to provide a broadcast receiver boot control method and a digital broadcast receiver for shortening the time taken to display a broadcast service after power on.

Another object of the present invention is to provide a computer readable recording medium having recorded thereon a program for executing a method on a computer.

In order to achieve the above technical problem, the broadcast receiver boot control method according to the present invention comprises the steps of: performing a power-on sequence of the legacy TV module in a booting method of a digital broadcast receiver including an IPTV module and a legacy TV module; Performing a channel selection for detecting OS booting and channel information in a power-on sequence of the IPTV module, zapping using a user interface of the legacy TV module based on the detected channel information, and screen muting ( mute) and waiting for user input. The legacy TV module may be a module that processes a broadcast service received through at least one of a cable, a terrestrial wave, and a satellite. In addition, the IPTV module may be a module for processing a broadcast service delivered through an IP packet. The detected channel information may be information indicating at least one channel of a default channel and a previous viewing channel.

Preferably, in the zapping, the legacy channel corresponding to the channel indicated by the detected channel information may be displayed. Here, the legacy channel may be a channel provided through at least one of a cable, a terrestrial wave, and a satellite. In addition, when a legacy channel corresponding to the channel indicated by the detected channel information does not exist, a channel set as a default may be displayed.

The broadcast receiver boot control method further includes the step of outputting a message instructing to wait until the power-on sequence of the IPTV module is input when a user command for requesting a broadcast service processed by the IPTV module is input.

In accordance with another aspect of the present invention, there is provided a digital broadcast receiver including an IPTV module and a legacy TV module, the digital broadcast receiver comprising: an interface unit configured to receive a user input, and a power-on of the legacy TV module; Controls a channel selection for detecting OS booting and channel information among a sequence and a power-on sequence of the IPTV module, and zapping using a user interface of a legacy TV module in which the power-on sequence is completed based on the detected channel information. And a control unit for controlling to release the screen mute and controlling the interface unit to receive a user input after the screen mute is released. The legacy TV module may be a module that processes a broadcast service received through at least one of a cable, a terrestrial wave, and a satellite. In addition, the IPTV module may be a module for processing a broadcast service delivered through an IP packet. In addition, the detected channel information may be information indicating at least one of a default channel and a previous viewing channel.

Preferably, the controller may control to display a legacy channel corresponding to a channel indicated by the detected channel information. Here, when the legacy channel corresponding to the channel indicated by the detected channel information does not exist, a channel set as a default may be displayed.

Preferably, when the user command for requesting a broadcast service processed by the IPTV module is input, the controller may control to output a message instructing to wait until the power-on sequence of the IPTV module is completed.

According to the broadcast receiver boot control method and the digital broadcast receiver according to the present invention, the channel manager module of the legacy TV module until the module displaying the screen is first powered on and all the modules of the IPTV that take a relatively long time are powered on. By switching channels with only (Channel Manager Module) and interface and bringing up the on-screen display (OSD) of the legacy TV module first, it can provide the user's desired response speed during the booting process of the broadcast receiver. It can increase.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention that can specifically realize the above object will be described. At this time, the configuration and operation of the present invention shown in the drawings and described by it will be described as at least one embodiment, by which the technical spirit of the present invention and its core configuration and operation is not limited.

The terms used in the present invention have been selected as general terms widely used as possible in consideration of the functions in the present invention, but may vary according to the intention or custom of a person skilled in the art or the emergence of a new technology. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, it is intended that the terms used in the present invention should be defined based on the meanings of the terms and the general contents of the present invention rather than the names of the simple terms.

The digital broadcast receiver refers to a broadcast receiver capable of receiving digital broadcast transmitted by digital video and audio signals. Here, unlike conventional analog broadcasting, digital broadcasting refers to a broadcasting technology capable of two-way operation, reproduction, and accumulation because the television signal is compressed and exported in a digital form that encodes and records information signals. Compared to analog broadcasting, such digital broadcasting is more resistant to noise, has a lower data loss, and transmits additional error correction information, which is advantageous for error correction, and provides a high resolution and clear picture. In addition, unlike analog broadcasting, digital broadcasting is an interactive service capable of receiving a broadcasting service from a broadcasting station and providing information to the broadcasting station.

In the present invention, the digital broadcast is used as a concept that includes not only broadcasts transmitted through terrestrial waves, satellites and cables, but also broadcasts transmitted through Internet networks. That is, digital broadcasting is defined as a concept including IP (Internet Protocol) broadcasting.

In addition, in the present invention, the digital broadcast receiver includes a broadcast receiver capable of providing an Internet service to a viewer. The Internet service includes content services such as CoD (Content's on Demand), YouTube service, weather, news, local information and search, entertainment services such as games and karaoke, TV mail, TV SMS (Short Message Service), etc. It means a service that can be provided through the Internet, such as a communication service. Accordingly, in the present invention, the digital broadcast receiver includes a network TV, a web TV and a broadband TV. In addition, the broadcast service may include an internet service as well as a broadcast service provided through terrestrial, satellite, and cable.

There may be various system architectures for transmitting digital broadcasts. For example, an Internet Protocol TV (IPTV) system is a system capable of providing various contents using an Internet network, and may be largely composed of a server, a network, and a client.

The servers of the IPTV are servers that perform various functions such as service discovery and selection server, streaming server, contents guide information server, customer information server, and payment information server. It can be configured as.

Among the servers, the streaming server transmits video data encoded in the stored Moving Picture Experts Group (MPEG) 2, MPEG4, etc. to the user through a network. As a protocol for the transmission, a Real-Time Transport Protocol (RTP), a RTP Control Protocol (RTP), or the like may be used.

In case of using Real-Time Streaming Protocol (RTSP), video stream playback can be controlled to some extent through a function called network trick play such as pause, replay, and stop. . The protocols are one example and other real time transmission protocols may be used depending on the implementation.

The content guide information server is a server that provides information on the various contents provided. The content guide information is information corresponding to electronic program guide (EPG) information and includes various information about content. The content guide information server stores content guide information data, and provides the stored data to the receiver.

The information server related to service discovery and selection among the servers provides the receiver with access information, playback information, and the like, for the servers providing various content services such as broadcasting, contents on demand (COD), and games.

The network system consists of an internet based network and gateways. The Internet-based network may use various types of networks such as an optical cable network, a coaxial cable network, a fiber to the home (FTTH), a telephone network, a wireless network, and the like based on IP. In addition to general data transfer, the gateway may perform multicast group management and quality of service (QoS) management using protocols such as Internet Group Management Protocol (IGMP).

A receiver of an IPTV is a receiver capable of receiving data transmitted through an internet network and providing the same to a user. The receiver includes an IPTV settop, a homenet gateway, an IPTV embedded TV, and the like.

In the case of a hybrid IPTV system, various contents of the Internet may be provided as well as various existing broadcasting contents. That is, the user can provide various broadcasting contents such as terrestrial broadcasting, cable broadcasting, satellite broadcasting, personal broadcasting, various internet video contents, data contents other than video, and the like. The contents may be provided in real time or may be provided on demand.

1 is a diagram schematically showing an IPTV system according to an embodiment of the present invention.

Referring to FIG. 1, in terms of providing a content service, the IPTV system may be divided into a content provider (CP), a service provider (SP), a network provider (NP), and a user. have.

The content provider produces and provides various contents. As shown in FIG. 1, the content provider includes a terrestrial broadcaster, a cable SO, or a MSO, a satellite broadcaster, and an internet broadcaster. (Internet broadcaster) and the like.

The service provider provides a service package of contents provided by the content provider. For example, the service provider of FIG. 1 packages a first terrestrial broadcast, a second terrestrial broadcast, a cable MSO, satellite broadcast, various Internet broadcasts, and provides the same to a user.

The network provider provides a network for providing the service to the user. The user may build a home network end user (HNED) to receive the service.

Conditional access, content protection, or the like may be used as a means for protecting the content transmitted from the IPTV system. As one example for the above-mentioned restriction reception or content protection, a method such as a cable card or a downloadable conditional access system (DCAS) may be used.

2 is a diagram schematically illustrating a network TV system according to an embodiment of the present invention.

Referring to FIG. 2, a network TV is a digital broadcast receiver capable of receiving digital broadcasts and receiving and providing Internet services to viewers. Network TV may be referred to as broadband TV and includes web TV. The web TV is a digital broadcast receiver that receives and provides an internet service based on the web.

The network TV may receive an Internet service directly from a content provider via the Internet. The network TV may request a search for the necessary information from the content provider and receive the result and provide it to the user. In addition, the network TV may download the content and software requested by the user, and may play the downloaded content or execute the downloaded software. It may also receive a web page from a content provider and display the web page received through a browser.

In addition, the network TV may not only receive a broadcast service through the Internet, but also receive a broadcast service from a terrestrial broadcaster through terrestrial, and may use a cable system operator (cable system operator) or a cable. A broadcast service may be received from a multiple system operator (MSO), and a broadcast service may be received from a satellite broadcaster through a satellite.

The digital broadcast receiver may receive a broadcast service from a service provider or a content provider using a unicast or multicast scheme.

3 and 4 schematically illustrate multicast and unicast schemes, respectively.

3 and 4, the unicast method is a method of transmitting data 1: 1 between one sender and one receiver. For example, in the unicast scheme, when a receiver requests data from a server, the server transmits data to the receiver according to the request. Multicasting is a method of transmitting data to a plurality of recipients of a specific group. For example, the server can send data to multiple pre-registered receivers at once. The Internet Group Management Protocol (IGMP) protocol may be used for the multicast registration.

FIG. 5 is a diagram illustrating a hierarchical structure for broadcasting a Content Download Service (CDS) of IPTV.

Referring to FIG. 5, the service provider delivers data contents for CDS to an IPTV receiver using a transport protocol. The delivered data content for CDS is stored in the storage of IPTV. The stored data contents for CDS can be executed at the request of the user or the like. The transport protocol may be a File Delivery over Unidi-rectional Transport (FLUTE) mounted on ALC / LCT over IP / UDP, and may include DVB-STP, DVB data / object carousel, File Transfer Protocol (FTP), HTTP ( hypertext transfer protocol), and the above-described protocol may be used as another example.

When FLUTE is used as the transport protocol, the presence or absence of a CDS service may be known to an IPTV receiver through service discovery and selection (SD & S), and the details of the content may include metadata in a TV Anytime format. Can be found through:

Data contents for CDS may include various types of contents such as A / V contents, data contents, and game contents.

As described above, the digital broadcasting receiver of the present invention including the IPTV may receive various contents and output the provided contents on a display screen according to a user's selection.

6 is a block diagram showing the configuration of a digital broadcast receiver according to an embodiment of the present invention.

The digital broadcast receiver of FIG. 6 shows a receiver of a type capable of receiving all IPTV services, cable broadcasting, terrestrial broadcasting, and satellite broadcasting based on IP. The receiver of FIG. 6 may be implemented to receive only an IPTV service or only a cable broadcast according to an embodiment. In addition, the cable card of FIG. 6 may be referred to as another name according to the above embodiment.

The receiver of FIG. 6 includes an IPTV module and a legacy TV module. The IPTV module is a module that processes an IPTV broadcast service. Here, the IPTV broadcasting service means a broadcasting service delivered through an IP packet. The IPTV module also includes an OS, middleware, applications, and user interface for handling IPTV broadcast services. The user interface is an IPTV module that provides On Screen Display (OSD) and channel zapping.

In addition, the legacy TV module is a module that processes a broadcast service received through at least one of cable, terrestrial wave, and satellite. Here, the broadcast service received through at least one of the cable, the terrestrial wave, and the satellite is defined as a legacy broadcast service. The legacy TV module includes an OS, middleware, applications, and a user interface for handling legacy broadcast services. The user interface is a legacy TV module that provides On Screen Display (OSD) and channel zapping.

The receiver of FIG. 6 may include a host (600) and a cable card (620). When not using a separate limited reception system, the receiver may include only a host (HOST) 600.

The host 600 includes a first tuner 602, a second tuner 604, a demodulator 606, a multiplexer 608, a demultiplexer 610, Decoder 612, Network interface 614, Network unit 616, Parser 618, Control unit 622, DCAS (Downloadable CAS) unit ( 624, a digital video recorder (DVR) controller 626, a content encryption unit 628, a storage interface 630, a storage 632, a display unit 634 and interface unit 636.

The cable card 620 may be a single stream card capable of processing only one stream or a multi stream card capable of simultaneously processing a plurality of streams.

The receiver may be an open cable method in which a cable card 620 including a conditional access (CA) system is separated from a main body. The cable card 620 is also referred to as a point of deployment (POD) module, and is installed in a main body slot of the receiver. It can be manufactured to be removable. The main body into which the cable card 620 is inserted is also referred to as a host. In this case, the cable card 620 and the host 600 are collectively referred to as a receiver.

The network connection unit 601 connects an external network network and a receiver. For example, the receiver may be connected to an external IP network. For example, in the case of using a multimedia over coax alliance (MoCA), an IP-based network may be constructed and connected on a coaxial cable network. Alternatively, you can connect to an external network using a DOCSIS modem, or connect to an external network using a wireless relay that connects to a wireless internet network, or a wired relay that connects to a wired internet network such as a wired ADSL repeater. It may be. The connection example with the external network is an embodiment, and which one to use may vary depending on how it is connected to the external network.

The first tuner 602 is a terrestrial A / V (Audio / Video) broadcast transmitted through an antenna or a cable A / V broadcast transmitted in an in-band through a cable connected to the network connection unit 601. Only a specific channel frequency is tuned and output to the demodulator 606.

At this time, since the terrestrial broadcast and the cable broadcast have different transmission methods, the demodulation method in the demodulator 606 is also different. For example, terrestrial A / V broadcasting is modulated and transmitted in VSB (Vestigial Sideband Modulation) scheme, and cable A / V broadcasting is modulated and transmitted in quadrature amplitude modulation (QAM) scheme. Therefore, if the channel frequency tuned by the first tuner 602 is a terrestrial broadcast, the demodulator 606 demodulates by the VSB method, and if the channel is tuned by the first tuner 602, the demodulated signal is demodulated by the QAM method.

The second tuner 604 tunes only a specific channel frequency of the cable A / V broadcast transmitted in the in-band through a cable connected to the network connection unit 601 and outputs it to the demodulator 606.

The first tuner 602 and the second tuner 604 may tune and transmit signals of different channels to the demodulator 606. Alternatively, different A / V streams of the same channel as the first tuner 602 may be tuned and transmitted to the demodulator 606. For example, the first tuner 602 may tune the stream of the main picture, and the second tuner 604 may tune the stream of the picture in picture (PIP). When the digital video signal is stored using a digital video recorder (DVR) or the like, the first and second tuners 602 and 604 may be used to watch and record video signals while simultaneously watching and recording the video signals. It may be.

The demodulator 606 demodulates the received signal and transmits the demodulated signal to the multiplexer 608. The multiplexer 608 may multiplex and output the signals input from the demodulator 606 and the parser 618. For example, the main image tuned and demodulated in the first tuner 602 and the PIP image tuned and demodulated in the second tuner 604 may be multiplexed and output. Alternatively, according to an embodiment, images of other channels may be multiplexed, or may be multiplexed with a signal output from the parser 618.

If the signal output from the multiplexer 608 is a terrestrial broadcast signal, the input signal is output to the demultiplexer 610. If the cable or IPTV broadcast signal is output, the demultiplexer (620) is installed through the cable card 620 mounted in the slot. 610). The cable card 620 includes a conditional access (CA) system for copy protection and limited access to high value-added broadcast content, and is also referred to as a point of deployment (POD) module.

That is, if scramble is applied to the received broadcast signal, the cable card 620 descrambles and outputs it to the demultiplexer 610. If the cable card 620 is not mounted, the A / V broadcast signal output from the multiplexer 608 is directly output to the demultiplexer 610. In this case, since the scrambled A / V broadcast signal cannot be descrambled, it may not be viewed normally.

The demultiplexer 610 separates the input video signal and the audio signal and outputs the separated video signal to the decoder 612. The decoder 612 restores the compressed A / V signal to the original signal through the video decoding algorithm and the audio decoding algorithm, respectively, and outputs the original A / V signal to the display unit 634 for display.

The DVR controller 626, the content encryption unit 628, the storage interface unit 630, and the storage unit 632 store the received digital data or play the stored data. The DVR controller 626 stores the selected video data among the data output from the demultiplexer 610 or reproduces the selected video data among the stored data under the control of the controller 622. The content encryption unit 628 encrypts and outputs the data to be stored, or restores and outputs the encrypted and stored data. The encryption unit 628 may not be used depending on implementation. Here, the content or program data stored by the DVR controller 626 is called a recording. That is, the recording may include stored video data or audio data under the control of the DVR controller 626, and may further include additional data necessary for reproducing the stored video data or audio data.

The storage interface unit 630 performs a data input / output interface with the storage unit 632, and the storage unit 632 stores the input data.

The storage unit 632 may store a program for processing and controlling signals in the controller 622, may store a video signal, an audio signal, or a data signal that has been processed, and may store service information. In addition, the storage unit 632 may store information for reserve recording of a broadcast program and information for managing recordings.

The storage unit 632 may be configured as a single physical storage medium, or may be configured as a plurality of storage media. When the storage unit 632 is configured as a plurality of storage media, the storage interface unit 630 may be configured as a plurality. In addition, the storage unit 632 may include a flash memory type, a hard disk type, a multimedia card micro type, and a card type memory (for example, SD or XD memory). The storage medium may be implemented as at least one type of storage medium such as RAM, EMPROM, or the like.

The controller 622 controls overall operations in the host 600. The controller 622 may receive a signal transmitted from the remote controller 650 through the interface unit 636. The controller 622 processes the received signal to determine a command input by the user to the remote controller 650 and controls the host 600 to correspond thereto. For example, when a user inputs a predetermined channel selection command, the controller 622 may control the first tuner 602 or the second tuner 604 to receive the selected channel through the first tuner 602 or the second tuner 604. ). In addition, the decoder 612 is controlled to process the video signal and the audio signal of the selected channel. In addition, the controller 622 controls the decoder 612 to be output through the display unit 634 together with the video signal and the audio signal processed by the channel information selected by the user.

As another example, the user may input another type of video or audio output command through the remote control device 650. That is, the user may want to watch the recording stored in the storage 632 instead of the broadcast signal. In this case, the controller 622 may control the DVR controller 626 to allow the recording to be played back.

The controller 622 may determine a user command input to a user input unit (not shown) formed in the host 600 in addition to the command input through the remote controller 650 and control the host 600 to correspond thereto. For example, the user may input an on / off command, a channel change command, a volume change command, or the like of the host 600 through the user input unit. The user input unit may be formed of a button or a key formed on the host 600. The controller 622 may determine whether the user input unit is manipulated and control the host 600 accordingly.

In addition, the controller 622 may execute a browser to process the received service. The browser may display the service information and control the content to be played back. The browser can also run applications, applications associated with content. The browser may process and display a web page provided by the server on the screen. The service information may be provided in the form of a web page from the server.

The DCAS unit 624 may download and store a CA system from the transmitting server, and performs a CA according to an appropriate CA system among the stored CA systems. The controller 622 controls the interface between the host 600 and the cable card 620 and data processing of the host 600.

The network interface unit 614 receives an Ethernet frame packet transmitted to a specific IP address among the signals received through the network connection unit 601 and transmits the packet to the network unit 616. That is, the network interface unit 602 receives an IP packet for transmitting broadcast data from a service providing server through a network. The broadcast data includes content, update messages indicating whether to update the content, metadata, service information data, and software code. In addition, the service information may include service information for the real-time broadcast service and service information for the Internet service. The specific IP address may be an IP address of the host itself or an IP address of the cable card. In addition, the service providing server may be a content provider or a service provider.

Alternatively, the network interface unit 614 receives data according to bidirectional communication (for example, a paid program request, status information of a receiver, a user input, etc.) from the network unit 616 and receives an external data through the network connection unit 601. To the network.

In the receiver of FIG. 6, an IPTV broadcast signal, a Video On Demand (VOD) signal, or an Out Of Band (OOB) message signal according to an IP protocol may be received through the network interface unit 614. In case of existing cable broadcasting, system information (SI), emergency alert system (EAS), eXtended Application Information Table (XAIT), CA system information using DSG (DOCSIS Settop Gateway) or OOB (Out Of Band) Receive OOB messages such as various cable card control information.

In the case of the receiver as shown in FIG. 6, a DOCSIS modem or an OOB tuner may be provided inside the host to receive the OOB message. For example, an OOB message may be received using one of an IP method and an OOB method, and an OOB message may be received using one of an IP method, a DSG method, and an OOB method.

When receiving an OOB message using one of the IP and OOB methods, an OOB modem, a demodulator, and the like are further required in the receiver as shown in FIG. When receiving an OOB message using one of an IP method, a DSG method, and an OOB method, a switching unit for selecting a DOCSIS modem, an OOB modem, the DSG method and an OOB method in the receiver as shown in FIG. According to each scheme, a demodulator for transmitting data to the headend side is further required.

As described above, when both the IP method, the existing DSG method, and the OOB method can be used, or when the IP method and the OOB method can be used except for the DSG method, the transmission side determines whether to use the cable card ( 620. The cable card 620 informs the host 600 of the operation method according to the information determined by the transmitter. In this case, the backward compatibility problem can also be solved .

For the convenience of description, the receiver of FIG. 6 receives service information and OOB messages through the network interface unit 614 using IP rather than the DSG method using the DOCSIS modem or the OOB method using an OOB tuner. Explain mainly. In this case, the transmitting side must packetize the service information and the OOB message using IP and transmit the packet. In the case of a VOD or an IPTV broadcast, a message such as CA system information may be received in a packet form such as the VOD packet or an IPTV broadcast packet.

The above-described OOB message is just one example, and other necessary information other than the above-described information may be added or unnecessary information may be excluded from the above-described information, depending on the implementation.

The network unit 616 routes the received packet to a destination of the packet by using a network stack based on the TCP / IP protocol or the User Datagram Protocol (UDP) / IP protocol. That is, the network unit 616 may support both the TCP / IP protocol and the UDP / IP protocol.

The network unit 616 routes the received VOD signal or IPTV broadcast signal to the parser 618. The parser 618 receives a moving picture expert group (MPEG) based TP packet included in an IP / UDP packet, parses the received moving picture expert group (MPEG) based TP packet, and parses the received TP packet. 608). The process after the multiplexer 608 is as described above. In the above example, since a broadcast signal based on MPEG is assumed, a TP packet is received and parsed. However, when a broadcast signal using a different standard is received, a unit other than the TP packet unit may be used. Therefore, the spirit of the present invention is not limited to the terms according to the embodiments.

The network unit 616 transmits the packet whose destination is the cable card 620 to the cable card 620. The OOB (Out Of Band) message, which is one of the packets whose destination is the cable card 620, is routed by the network unit 616 and transmitted to the cable card 620. When routing the OOB message to the cable card 620, data may be transmitted to the cable card 620 through a second layer routing or a third layer routing.

The network unit 616 transmits the packet whose destination is the control unit 622 to the control unit 622. The service information, which may be one of the packets whose destination is the control unit 620, is routed by the network unit 616 and transmitted to the control unit 622. When the service information is routed to the controller 622, data may be transmitted to the controller 622 through second layer routing, third layer, and fourth layer routing. Here, the fourth layer routing uses port information included in the TCP packet.

In case of using the second layer routing, routing is performed using a media access control (MAC) address system of a destination included in a header of a received Ethernet frame. In case of using the third layer routing, routing is performed using the destination IP address system included in the IP header of the received Ethernet frame. Whether to use the second layer routing or the third layer routing may vary depending on implementation. That is, according to the implementation example, the second layer routing scheme may be used, or the third layer routing scheme may be used.

The data channel and the extended channel exist between the cable card 620 and the host 600. The data channel is set to exchange control signals between the host 600 and the cable card 620, and the extension channel is a channel set to exchange actual data. The expansion channel is a CPU interface defined to exchange data between the host 600 and the cable card 620.

That is, the cable card 620 communicates with the sender, interprets a command received from the sender, and then communicates with the host through the data channel and the extended channel to perform the instructions indicated by the sender or the user. It plays the role of delivering the entered contents to the sender.

In this case, in order to transmit data through the extension channel, first, a transmission line corresponding to the data type defined between the cable card 620 and the host 600 should be set. This is called flow. For example, in order to transmit MPEG section data, the MPEG section flow may be set between the cable card 620 and the host 600 and then the actual MPEG section data may be transmitted on the flow.

The flow on the extension channel includes an IP unicast (IP_U) flow, an IP multicast (IP_M) flow, and up to six MPEG section flows. If the DOCSIS modem is embedded in the host as shown in FIG. 6, the flow on the extension channel further includes a DSG flow for transmitting an OOB message received through the DOCSIS modem to a cable card. do.

The OOB message packet received through the network interface unit 614 may be transmitted to the cable card through IP address based routing. Routing to the destination IP address is performed via the network unit 616. In addition, packets used by each application of the host 600 are routed to each corresponding application. For example, an application in the host 600 may include a multicasting (MC) application and a navigation (NAV) application.

An IP_U flow or an IP_M flow may be used when transmitting data from the host 600 to the cable card 620, and an IP_U flow may be used when transmitting data from the cable card 620 to the host 600. Data received by the cable card 620 through the flow is rerouted and transmitted to the corresponding application in the cable card. For example, applications in the cable card may include a CA (Conditional Access) application, an MC application, and an Implement Pay Per View (IPPV) Report back function (RPP) application.

Among the data received by the cable card 620, MPEG section data other than the data used only in the cable card 620 are filtered and routed to each application of the host 600 through the MPEG section floor. For example, the MPEG section data includes SI, EAS, and XAIT data. The cable card 620 extracts MPEG section data from the received data, composes MPEG section data fragments into complete MPEG section data, and transmits the MPEG section data to the host 600 through the MPEG section floor.

Among the flows, the IP_U flow transmits data received to the host 600 in a unicast manner to the cable card 620 and has bidirectionality between the host 600 and the cable card 620. The IP_M flow transmits data received by the multicast method to the cable card 620 to the host 600. The IP_M flow has a one-way direction in the cable card direction.

When the OOB message is received through data transmission and reception between the cable card 620 and the transmitting headend, a unicast scheme may be used. When the OOB message is transmitted and received using the unicast method as described above, the OOB message received by the host 600 may be transmitted to the cable card 620 through the IP_U flow.

The network unit 616 receives the Ethernet frame packet and routes it to the destination address of the packet. In this case, when the above-described OOB message is received and routed to the cable card 620 according to the unicast method, the OOB message may be routed to the cable card 620 through the IP_U flow.

As described above, the host 600 may route the OOB message to the cable card 620 using the second layer routing or the third layer routing. The cable card 620 is preset with a specific MAC address and IP address. In the case of the second layer routing, data in which the destination MAC address included in the Ethernet header of the Ethernet frame is set to the MAC address of the cable card is transmitted to the cable card 620. In the case of the third layer routing, data to which the destination IP address included in the IP header of the Ethernet frame is set to the IP address of the cable card is transmitted to the cable card 620.

However, in case of the IP_U flow, an IP packet is transmitted. The IP packet includes a 20-byte IP header portion, an 8-byte UDP header portion, and a UDP payload portion. Similarly, when data is transmitted according to a TCP protocol other than the UDP protocol, a TCP header portion and a TCP payload portion are included instead of the UDP header portion or the UDP payload portion.

Therefore, in case of using the second layer routing method or the third layer routing method, the data of the IP packet form in which the Ethernet header part and the Ethernet CRC part are removed from the Ethernet frame packet are transferred to the cable card 620. send. The IP packet may be divided into a broadcast data packet including an MPEG section, a CA data packet including information regarding limited reception, and the like according to the type of data included.

7 is a flowchart illustrating a process of performing a preferred embodiment of the broadcast receiver boot control method according to the present invention.

Referring to FIG. 7, the controller 622 receives a power on key signal (S700). Here, the user may input the power on key signal by pressing the power on key of the remote controller 650.

When the power on key signal is input, the controller 622 controls the progress of the power on sequence of the legacy TV module (S710). Here, the legacy TV module may be a module that processes a broadcast service received through at least one of a cable, a terrestrial wave, and a satellite.

The controller 622 controls the progress of channel selection for detecting OS booting and channel information during the power-on sequence of the IPTV module (S720). Here, the IPTV module may be a module that processes a broadcast service delivered through an IP packet. In addition, channel information detected by channel selection may be information indicating at least one of a default channel and a previous viewing channel. The previous viewing channel refers to the last viewed IPTV channel, and the default channel refers to the IPTV channel set at the time of manufacture of the receiver. The controller 622 proceeds with channel selection and detects information indicating a previous viewing channel or information indicating a default channel among the IPTV channels.

The control unit 622 zaps using the user interface of the legacy TV module based on the detected channel information (S730). Here, the controller 622 may display the legacy channel corresponding to the channel indicated by the detected channel information. The legacy channel may be a channel provided through at least one of cable, terrestrial wave, and satellite. The user interface of the legacy TV module is a user interface for zapping legacy channels. That is, the control unit 622 switches the channels only by the interface of the channel manager module of the legacy TV module and the legacy TV module.

If the channel indicated by the detected channel information is a previous viewing channel, the controller 622 controls to zap to a legacy channel corresponding to the previous viewing channel of the IPTV channel. In this case, the display unit 634 displays the legacy channel corresponding to the previous viewing channel of the IPTV channel. Accordingly, the user can quickly watch the same channel as the previously watched IPTV channel after the power-on key is input. That is, the user can watch the IPTV channel faster than is displayed after the power-on sequence of the IPTV module is completed.

In addition, when the channel indicated by the detected channel information is a default channel, the controller 622 may control to zap to a legacy channel corresponding to the default channel of the IPTV channel.

In addition, when the legacy channel corresponding to the channel indicated by the detected channel information does not exist, the controller 622 may display the legacy channel set as a default. In this case, the controller 622 may control to display on the screen a message indicating that there is no legacy channel corresponding to the previously watched IPTV channel and display the legacy channel set as a default.

The controller 622 releases the screen mute and waits for a user input (S740). The controller 622 controls the interface 636 to receive a user input.

The controller 622 checks whether a user command for requesting a broadcast service processed by the IPTV module is input (S750). Here, the user command for requesting a broadcast service processed by the IPTV module includes a command for requesting an EPG of an IPTV and a request for detailed information on an IPTV channel. The command for requesting detailed information on the IPTV channel includes a request for requesting a preferred channel, a channel list, and broadcast information.

When a user command for requesting a broadcast service processed by the IPTV module is input, the controller 622 outputs a message instructing to wait until the power-on sequence of the IPTV module is completed (S760).

8 is a flowchart illustrating a preferred embodiment of the power-on sequence of the IPTV module according to the present invention.

Referring to FIG. 8, the controller 622 controls the progress of OS booting (S800). The controller 622 controls the progress of DRM (Digital Rights Management) booting and channel selection (S810). A module for performing DRM authentication for a broadcast service is booted through DRM boot.

In addition, the controller 622 may detect channel information by proceeding with channel selection. The channel information may be information indicating at least one channel of the default channel and the previous viewing channel. The previous viewing channel refers to the last viewed IPTV channel, and the default channel refers to the IPTV channel set at the time of manufacture of the receiver. That is, the controller 622 performs channel selection and detects information indicating a previous viewing channel or information indicating a default channel among the IPTV channels. The controller 622 may zap using the user interface of the legacy TV module based on the detected channel information.

The controller 622 controls middleware booting (S820). The middleware module for providing the IPTV broadcasting service is booted through the middleware booting.

The controller 622 controls application booting (S830). Applications are executed to provide IPTV broadcasting service through application boot.

The controller 622 controls to enable the user interface zapping of the IPTV module (S840). In order to enable the user interface zapping of the IPTV module, a process of obtaining IPTV channel information from a server and receiving an EPG is required. This series of steps can take over ten minutes, depending on the communication speed of the network. Therefore, since the present invention zaps using the user interface of the legacy TV module based on the detected channel information, the present invention can display a broadcast service faster than using the user interface of the IPTV module.

When the user interface zapping of the IPTV module is enabled, the control unit 622 can control the zapping using the user interface of the IPTV module and perform real-time tuning of the IPTV channel. That is, the user may zap the IPTV channel using the remote controller 650. In addition, when a user command for requesting a broadcast service processed by the IPTV module is input, the controller 622 may control a user command for requesting a broadcast service processed by the IPTV module to be performed. When a command for requesting an EPG is input, the controller 622 controls the display unit 634 to display the EPG. In addition, when a command for requesting a preference channel is input, the controller 622 controls the preference channel to be displayed on the screen. When a command for requesting a channel list is input, the controller 622 controls the channel list to be displayed on the screen.

If the display of the legacy channel is performed by zapping using the user interface of the legacy TV module based on the detected channel information, the controller 622 controls to automatically change the displayed legacy channel to the corresponding IPTV channel. The control unit may control the user to change the displayed legacy channel to the corresponding IPTV channel, and control to change the displayed legacy channel to the corresponding IPTV channel according to the user's selection.

The controller 622 performs background processing (S850).

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer apparatus is stored. Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission via the Internet) . The computer readable recording medium can also be distributed over network coupled computer devices so that the computer readable code is stored and executed in a distributed fashion.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific preferred embodiments described above, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

1 is a diagram schematically showing an IPTV system according to an embodiment of the present invention;

2 is a diagram schematically illustrating a network TV system according to an embodiment of the present invention;

3 is a schematic diagram of a multicast scheme,

4 is a diagram schematically illustrating a unicast scheme;

5 is a diagram illustrating a hierarchical structure for broadcasting a Content Download Service (CDS) of IPTV;

6 is a diagram schematically illustrating a digital broadcast receiver as an embodiment according to the present invention;

7 is a flowchart illustrating a process of performing a preferred embodiment of the broadcast receiver boot control method according to the present invention;

8 is a flowchart illustrating a preferred embodiment of the power-on sequence of the IPTV module according to the present invention.

Claims (15)

In the booting method of a digital broadcast receiver comprising an IPTV module and a legacy TV module, Proceeding with a power on sequence of the legacy TV module; Performing channel selection for detecting OS booting and channel information in a power-on sequence of the IPTV module; Zapping using the user interface of the legacy TV module based on the detected channel information; And Releasing the screen mute and waiting for a user input. The method of claim 1, The legacy TV module is a broadcast receiver boot control method, characterized in that the module for processing a broadcast service received through at least one of the cable, terrestrial and satellite. The method of claim 1, The IPTV module is a broadcast receiver boot control method, characterized in that the module for processing a broadcast service delivered through the IP packet. The method of claim 1, And the detected channel information is information indicating at least one of a default channel and a previous viewing channel. The method of claim 1, In the step of zapping, And displaying a legacy channel corresponding to a channel indicated by the detected channel information. The method of claim 5, And the legacy channel is a channel provided through at least one of a cable, a terrestrial wave, and a satellite. The method of claim 5, If the legacy channel corresponding to the channel indicated by the detected channel information does not exist, the broadcast receiver boot control method, characterized in that for displaying the default channel. The method of claim 1, And when a user command for requesting a broadcast service processed by the IPTV module is input, outputting a message instructing to wait until the power-on sequence of the IPTV module is completed. . In the digital broadcast receiver comprising an IPTV module and a legacy TV module, An interface unit for receiving a user input; And A legacy TV module is configured to control channel selection for detecting OS booting and channel information among a power-on sequence of the legacy TV module and a power-on sequence of the IPTV module. And a control unit to control zapping using the user interface of the user interface, control the release of the screen mute, and control the interface unit to receive a user input after the screen mute is released. The method of claim 9, The legacy TV module is a module for processing a broadcast service received through at least one of cable, terrestrial wave and satellite. The method of claim 9, The IPTV module is a digital broadcast receiver, characterized in that the module for processing a broadcast service delivered through the IP packet. The method of claim 9, And the detected channel information is information indicating at least one of a default channel and a previous viewing channel. The method of claim 9, The control unit, And controlling to display a legacy channel corresponding to a channel indicated by the detected channel information. The method of claim 13, And if the legacy channel corresponding to the channel indicated by the detected channel information does not exist, displaying a channel set as a default. The method of claim 9, The control unit, And when a user command for requesting a broadcast service processed by the IPTV module is input, outputting a message indicating a wait until completion of a power-on sequence of the IPTV module.

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