JP2005347888A - Digital television receiver, digital television broadcast system, and fault recovery support method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital television receiver, a digital television broadcast system, and a fault recovery support method thereof capable of exhibiting proper troubleshooting and executing it even on the occurrence of a fault in a network. <P>SOLUTION: The digital television receiver 100 provided with a network function and a browser function for using the network function so as to access a desired site for browsing, is provided with a diagnostic means for diagnosing trouble on a network path on the occurrence of a fault. The diagnostic means sequentially accesses a plurality of sites (320, 330) including a router means 140 and an access point 310 on the network path so as to diagnose (detect) the presence/absence of connection on every occasion thereby exhibiting a cause to the fault, its location and its measures. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a digital television receiver capable of diagnosing a failure on a network in a digital television receiver having a network function and a browser function for accessing and browsing a desired site using the network function. The present invention relates to a system and its failure recovery support method.

  In recent years, a system for digitizing and transmitting a television broadcast signal via a broadcast satellite, a communication satellite, etc., and receiving it in each home has been operated.

  Along with the digitization of broadcasting, digital TV receivers can receive radio waves multiplexed with video, audio, data, etc., and display data on the TV receiver in response to user key operations. Yes.

  For example, data broadcasting services have already started in BS digital broadcasting and terrestrial digital broadcasting in Japan. This is a broadcast station that transmits data groups including character data, layout data, script programs, etc. written in BML, etc., superimposed on the broadcast radio wave, and receives and stores the broadcast wave on the receiver side. Display the data on the screen.

  Further, recent digital television receivers have a network function that can be connected to a network such as the Internet, and have a function such as HTML. HTML (HyperText Markup Language) is a description language for Web pages, and BML (Broadcast Markup Language) is a page description language for data broadcasting based on XML (eXtendable Markup Language).

  In general, unlike PC users, television users are often unfamiliar with network operations such as the Internet, and it is also necessary to be able to perform troubleshooting when a failure occurs in the network.

A conventional digital television receiver is also disclosed that detects or analyzes a failure occurring in the receiver body and displays the analysis data on a monitor (see, for example, Patent Documents 1 and 2).
JP 2002-335461 A JP 2003-46889 A

   By the way, when a network failure occurs in a digital TV receiver, if the user has no specialized knowledge, it is difficult to solve it by himself, and even if the user support is contacted by telephone etc., the contents of the network failure It is also difficult to accurately convey the situation verbally. Therefore, even if there is expertise on the support side, it is often difficult to respond as a result.

  The present invention solves the above problem, and even when a failure occurs in a network, a digital television receiver, a digital television broadcast system, and a failure recovery support method capable of presenting and executing appropriate troubleshooting Is intended to provide.

The digital television receiver according to the present invention is a digital television receiver having a network function and a browser function for accessing and browsing a desired site using the network function.
A diagnostic means for diagnosing a trouble on the network path when a failure occurs is provided.

In the present invention, the diagnostic means includes
When a desired site is accessed and a normal connection is not established, the router means on the network path and a plurality of sites including the access point are sequentially accessed, and the presence or absence of connection is diagnosed each time.

Furthermore, in the present invention, the diagnostic means includes
A first determination unit that accesses a predetermined site and determines whether or not the connection is successful;
A second determination means for accessing the router means directly connected to the digital television receiver and determining whether or not the connection is possible when it is determined that the first determination means cannot connect normally;
A third determination unit that accesses the access point and determines whether or not the connection is established when it is determined that the second determination unit can connect;
If it is determined by the second determination means that the connection could not be established, a means for issuing a message on the screen of the digital television receiver that the connection cannot be made due to a problem with the home network connection;
A fourth determination unit that determines whether or not a connection has been established by accessing another site on the network when the third determination unit determines that the connection has been established;
A means for issuing a message on the screen of the digital television receiver that the access point cannot be connected due to the possibility that the access point is not currently operating;
If it is determined that the connection has been established by the fourth determination means, means for issuing a message on the screen of the digital television receiver that the predetermined site cannot be connected due to the possibility that the predetermined site is not currently operating;
And a means for issuing a message indicating that the connection cannot be made due to some failure on the network when the fourth determination means determines that the connection has failed.

A digital television broadcast system according to the present invention is capable of receiving a digital television broadcast wave and a broadcast station capable of transmitting the digital television broadcast wave, and accessing a desired site using the network function and the network function. In a digital television broadcasting system composed of a digital television receiver having a browser function for browsing and a network connected to the digital television receiver via the network function,
Means for notifying the broadcasting station of the situation when the service including the access point on the network is stopped due to its own trouble;
The broadcast station that has received the notification provides means for providing the failure information to the digital television receiver through a digital television broadcast wave;
A function provided in the digital television receiver for diagnosing a trouble on a network path when a failure occurs, on the network based on the diagnosis result and failure information provided from the broadcasting station through a digital television broadcast wave And a diagnostic means having a function of comprehensively determining the failure status occurring at the site.

In the above system of the present invention,
The diagnostic means includes
A first determination unit that accesses a predetermined site and determines whether or not the connection is successful;
A second determination means for accessing the router means directly connected to the digital television receiver and determining whether or not the connection is possible when it is determined that the first determination means cannot connect normally;
A third determination unit that accesses the access point and determines whether or not the connection is established when it is determined that the second determination unit can connect;
If it is determined by the second determination means that the connection could not be established, a means for issuing a message on the screen of the digital television receiver that the connection cannot be made due to a problem with the home network connection;
A fourth determination unit that determines whether or not a connection has been established by accessing another site on the network when the third determination unit determines that the connection has been established;
A means for issuing a message on the screen of the digital television receiver that the access point cannot be connected due to the possibility that the access point is not currently operating;
If it is determined that the connection has been established by the fourth determination means, means for issuing a message on the screen of the digital television receiver that the predetermined site cannot be connected due to the possibility that the predetermined site is not currently operating;
Fifth determination means for determining whether or not failure information is received by a digital television broadcast wave when it is determined that the connection by the fourth determination means has failed;
When it is determined by the fifth determination means that failure information has not arrived in the digital TV broadcast wave, a message is displayed on the screen of the digital TV receiver indicating that the connection to the external network cannot be made due to an unknown reason. Means,
When it is determined by the fifth determination means that failure information has been received by a digital television broadcast wave, the predetermined screen is displayed on the screen of the digital television receiver according to the failure information notified from the broadcast station side. A means for issuing a message indicating that the site is not currently operating due to a failure, a message indicating that connection cannot be established due to a failure of the access point, or a message indicating that connection cannot be established due to some failure on the network; It is characterized by comprising.

In the above system of the present invention,
The digital television broadcast wave includes a data broadcast signal.

The failure recovery support method in the digital television broadcasting system according to the present invention is:
A digital broadcasting station capable of transmitting a digital TV broadcast wave, a digital function capable of receiving the digital TV broadcast wave, and having a network function and a browser function for accessing and browsing a desired site using the network function A failure recovery support method in a digital television broadcasting system comprising a television receiver and a network connected to the digital television receiver via its network function,
As a result of the digital television receiver accessing the network, a first step of finding the presence / absence of a defect by itself;
A second step in which a site on the network notifies the broadcaster that a failure has occurred;
A third step in which the broadcast station that has received the notification provides the failure information to the digital television receiver through a digital television broadcast wave;
Based on the trouble information on the network found in the first step and the trouble information provided from the broadcasting station in the second step, the trouble that the digital television receiver has occurred at the site on the network And a fourth step of comprehensively determining the situation.

  According to the present invention, it is possible to present and execute appropriate troubleshooting even when a failure occurs in the network.

Embodiments of the invention will be described with reference to the drawings.
In the broadcast station, video content (including audio) and data broadcast content (including information data related to video content) are encoded and the encoded signals are multiplexed and then modulated and transmitted from the transmitting antenna. Is output. In BS digital broadcasting, a signal output from a transmitting antenna is transmitted to a digital television receiver via a broadcasting satellite. In terrestrial digital broadcasting, a signal output from a transmission antenna is transmitted to a digital television receiver. Data broadcast contents transmitted by data broadcasting include data in the format of BML.

FIG. 1 shows a block diagram of a configuration of a digital television receiver according to the present invention.
In FIG. 1, a digital television receiver 100 receives a digital television broadcast signal received by a reception antenna (not shown), and controls the entire receiver by a digital tuner 101 that selectively receives a channel broadcast signal by a user operation. CPU 102 as a control means, ROM 103 as a program memory storing a program for performing a predetermined control operation, RAM 104 as a data memory storing a program and data used at the time of operation, an infrared remote controller, etc. Control that includes an infrared communication control unit 105 that receives infrared control signals and data signals from the information equipment and an Ethernet (R) terminal, and is connected to a network connection device (not shown) such as a home router or an ADSL modem. Unit 106 and transport decoding And a video decoder 107 that performs transport stream (TS) processing and decoding processing on a broadcast signal received by the tuner 101 and reproduces a video signal and a data broadcast signal, a data bus 108, and an audio decoder. An audio processing unit 109 configured to decode the audio signal separated by the video processing unit 107 and reproduce the audio signal, various keys 110 for performing channel selection and other selections and adjustments, and a power source of the receiver A flash memory 111 as a non-volatile memory for storing various data that should be retained even after turning off, a display 112 for displaying video signals and data broadcast signals, a speaker 113 for outputting audio signals, and the like. .

  The BML equipped (stored) in the memory means (103, 104 or 111) of the receiver 100 analyzes the BML data under the control of the CPU 102, and displays an image described in the BML data. 112 is displayed on the screen.

  In FIG. 1, a signal received by a receiving antenna (not shown) is input to a digital tuner 101. The digital tuner 101 inputs a signal in a frequency band of a channel selected by a remote control operation, etc., performs a process such as demodulation and error correction on the input signal, and transport stream digital data ( TS data).

  The video processing unit 107 performs processing on the input TS data, performs descrambling processing on the TS data, performs descrambling, extracts packet data included in the TS data, and extracts video and audio for each packet. Then, a process for distributing the broadcast data is performed. The video data and broadcast data in the extracted packet are decoded and sent to the RAM 104 as a video memory. The voice data in the extracted packet is decoded by the voice processing unit 109 and then output to the speaker 113 via a D / A converter (not shown). Video data and / or broadcast data are sent to the display 112 and displayed in accordance with control from the CPU 102.

  FIG. 2 is a block diagram showing the overall configuration of a digital television broadcasting system including the digital television receiver as shown in FIG.

  In FIG. 2, a digital television broadcasting system includes a broadcasting station 400 capable of transmitting digital television broadcasting waves, the digital television broadcasting waves can be received, a network function, and a desired site using the network function. A network device 200 used in a networkable home including the digital TV receiver 100 having a browser function for accessing and browsing the Internet, and the Internet as a network connected to the digital TV receiver via the network function 300.

  As the network device 200, in addition to the digital television receiver 100, for example, a personal computer (PC) 120 and a hard disk recorder (HDD recorder) 130 are connected to a network terminal (that is, an Ethernet (R) terminal) of these devices. There is router means 140 to do. The network device 200 is connected via a router means 140 to a subscribed access point (sometimes referred to simply as an access point) 310 that is an Internet service provider (ISP).

  The router means 140 is composed of an ADSL modem, a cable modem or the like, and is connected to the access point 310 of the Internet 300 via the network line B.

  In addition to the access point 310, the Internet 300 includes a manufacturer portal site 320 connected to the access point 310 via a network line, and a plurality of other content service sites (only one site is shown in the figure) 330. The manufacturer portal site 320 is a service site that supports the network device 200 for each device or each manufacturer. These sites 310, 320, and 330 are directly connected to each other via a network line, or are connected to each other via another site.

  The broadcast station 400 can multiplex and transmit a data broadcast signal to a television broadcast signal as a digital television broadcast wave. In the Internet 300, when a failure occurs in, for example, a user-desired site 330 among a large number of sites, the provider operating the failure occurrence site 330 can select any communication means G including a network line. To notify the corresponding broadcast station 400 that a failure has occurred in the site 330. In response to the notification, the broadcasting station 400 notifies the digital television receiver 100 by transmitting network failure information related to the site 330 to the digital television receiver 100 through a digital television broadcast wave (data broadcast channel). In addition, if the network failure information of a specific site is transmitted from the broadcast station 400 by a broadcast wave, it can be received by a digital television receiver of an unspecified number of people. Specific sites include public sites that involve a large number of people, popular sites that are accessed by a large number of people, and manufacturer portal sites operated by device manufacturers.

  Next, a schematic operation of the digital television broadcasting system of FIG. 2 will be described with reference to reference signs A to I attached to FIG.

  Normally, when a failure on the Internet path does not occur (normal operation), when a user accesses a desired content service site 330 on the Internet on the browser screen of the digital television receiver 100, the IP of the site 330 is displayed. The address is transmitted through the routes of the network lines A, B, and C, and the content of the content service site 330 can be read through the reverse route and browsed on the display screen of the receiver 100. However, if the user cannot access the content of the desired content service site 330, that is, if a failure has occurred on the network path, the general user is likely to be caused by the network path A. , B, and C were difficult to specify.

  Therefore, when a desired content service site 330 is accessed, if a failure occurs on the network path and content browsing on the site cannot be performed, first, as a first step, the digital television receiver 100 automatically uses, for example, a PING command. The communication is checked by accessing the router means 140 in the home. If communication with the router means 140 is impossible, the digital television receiver 100 knows that there is a malfunction at least at the location of the line A in the home. Displayed on the display as fault information.

  Next, as a second step, when communication with the router means 140 is possible in the first step, the IP address of the subscribing access point is issued next to check whether communication with the access point 310 is possible. If the IP address does not reach the access point 310 and communication is not possible, the digital television receiver 100 can determine that at least the network line B is defective.

  Next, as a third step, if communication with the access point 310 is possible in the second step, an attempt is made to access the content service site 330 via another site, for example, the manufacturer portal site 320.

  At this time, if the manufacturer portal site 320 is not accessible, the digital television receiver 100 can determine that the access point 310 cannot connect to the Internet.

  On the other hand, when the manufacturer portal site 320 is accessible and the content service site 330 is not accessible, the digital television receiver 100 can determine that the content service site 330 is defective.

  As described above, (1) the digital television receiver 100 sequentially accesses the sites on the network, and as a result, the digital television receiver 100 performs the operation of elucidating the presence / absence of the defective portion (first trouble information) by itself. In addition, (2) Trouble information (second trouble information) that various sites including access points on the network have troubles on their own servers, etc. and the service has stopped is optional, including the network (3) The broadcast station 400 that has received the notification provides the digital TV receiver 100 using a digital TV broadcast wave, and (3) 4) The digital television receiver 100 that has received the broadcast wave receives the first trouble information that the receiver itself has found through its own trial, and the second trouble that the broadcast station 400 provides. Overall determine the fault condition on the network on the basis of the information.

  It should be noted that the digital TV receiver 100 can find out the trouble at the failure point, and each site including the access point on the network can issue the trouble of the own server etc. to the broadcasting station by any means (including the network, but people can also make a phone call) ) Is a completely independent event that is not linked at all, and the results obtained from the two events are used in the digital television receiver 100 for comprehensive judgment of the failure situation. is there.

  Next, a specific operation example of the digital television broadcasting system of FIG. 2 will be described with reference to FIGS. FIG. 3 shows a flowchart of the operation of the digital television broadcasting system of FIG. 2, and FIG. 4 shows a display example of the failure & response message displayed on the display screen of the receiver 100 based on the determination results of the plurality of determination steps in FIG. Is shown. The flowchart in FIG. 3 shows an operation based on the control of the CPU 102 of the digital television receiver 100 in FIG.

  3 and 4 illustrate an example of a failure diagnosis means and method in a digital television receiver and a digital television broadcast system, in other words, an example of a failure recovery support method in a digital television broadcast system. is there.

  In FIG. 3, first, a URL (Uniform Resource Locator) of a predetermined (or desired) site is designated (step S1). Automatic designation or manual designation may be used.

  After the predetermined site is designated, it is determined whether or not the connection to the predetermined site is normal (step S2). After the site is specified, for example, if the connection is not successful even after a certain period of time, a timeout error is detected (step S3). If an error is detected, the CPU 102 accesses the router means 140 (see FIG. 2) in the home (step S4). That is, for example, a command PING is issued to the router means 140 together with the IP address (step S4), and it is determined (confirmed) whether or not the router means 140 can be connected (step S5). If the connection is not established, the process proceeds to the next step S13, and the failure & response message (1) screen of FIG. 4 is displayed. That is, “Error! Cannot connect because there is a problem with the network connection in the home” is displayed.

  If it is possible to connect to the router means 140 in step S5, the subscriber access point 310 that is an Internet service provider (ISP) is accessed (step S6). Then, a determination is made as to whether or not connection to the subscribed access point 310 has been established (step S7). If the connection is not established, the process proceeds to the next step S14, and the failure & response message (2) screen of FIG. 4 is displayed. That is, the message “Error! Connection point ISP access point may not be able to connect because it is not currently operating” is displayed.

  If it is possible to connect to the subscription access point 310 in step S7, the URL of another site (for example, the portal site 320 of the manufacturer) on the Internet 300 is accessed (step S8). Then, it is determined whether or not the connection to the site 320 has been established (step S9). If the connection is established, the process proceeds to the next step S15, and the failure & response message (3) screen of FIG. 4 is displayed. That is, “Error! Cannot connect because the specified site (URL) may not be currently active” is displayed.

  If it is not possible to connect to another site (for example, the manufacturer portal site 320) in step S9, it is determined whether or not failure information is received from the broadcasting station 400 by broadcast waves to the digital television receiver 100 (step S10). If no failure information is received from the broadcast station 400 by broadcast waves in the receiver 100, the process proceeds to the next step S16, and the failure & response message (4) screen of FIG. 4 is displayed. That is, “Error! Cannot connect to external network for unknown reason” is displayed.

  In step S10, when failure information is received from the broadcasting station 400 to the digital television receiver 100 by a broadcast wave, it is confirmed whether failure information is displayed on a predetermined site (URL) as a failure message. (Step S11). If there is information indicating that there is a failure at a predetermined site as a failure message, the process proceeds to the next step S17, and the failure & response message (5) screen of FIG. 4 is displayed. That is, “Error! The specified site (URL) is not currently operating due to a failure” is displayed.

  If there is no failure information in the predetermined site in step S11, the process proceeds to step S12, and it is confirmed whether or not the failure information is displayed as a failure message on the user access point (subscriber ISP) ( Step S12). If there is information indicating that there is a failure at a predetermined site as a failure message, the process proceeds to the next step S18, and the failure & response message (6) screen of FIG. 4 is displayed. That is, the message “Error! Currently unable to connect due to failure of the access point to which you are subscribed” is displayed.

  If there is no failure information in the predetermined site in step S12, the process proceeds to the next step S19, and the failure & response message (7) screen of FIG. 4 is displayed. In other words, “Error! Currently unable to connect due to some problem on the Internet” is displayed.

  Note that the operation check up to step 12 in FIG. 3 is not limited to the order described above, and the order may be changed.

  As described above, when a problem occurs in browsing the content on the content service site, automatic verification of the operation on the network is performed in cooperation with the broadcast wave, and the cause is presented to general users who do not have network expertise. And take appropriate measures.

  In the digital television broadcasting system according to the second embodiment of the present invention, the broadcasting station 400 uses a digital television broadcast wave to transmit network failure information acquired from a site on a network such as the Internet or any means such as a telephone link by a person. The information is transmitted to the user's digital television receiver 100 for notification. Then, when the user takes a countermeasure based on the failure information and the failure cannot be recovered, or the digital television broadcast system does not notify the digital television receiver 100 of the network failure information by the digital television broadcast wave. In such a case, the user can use the diagnostic function (diagnostic program) as shown in FIG. 5 that does not use the digital television broadcast wave in the digital television receiver 100 to diagnose a problem on the network path or provide support for failure recovery. It becomes possible.

  FIG. 5 shows a flowchart of a diagnostic operation of a digital television receiver having a network function and a browser function.

  The flowchart of FIG. 5 is configured such that steps S10 and S16, steps S11 and S17, and steps S12 and S18 in the flowchart of FIG. 3 are deleted. Accordingly, the result “NO” of the determination step S9 is a flowchart following the failure & response message (7) of step S19. The configuration of the other flowcharts is the same as that in FIG.

  That is, in FIG. 5, first, a URL of a predetermined (or desired) site is designated (step S1). Automatic designation or manual designation may be used.

  After the predetermined site is designated, it is determined whether or not the connection to the predetermined site is normal (step S2). After the site is specified, for example, if the connection is not successful even after a certain period of time, a time-out error is detected (step S3). If an error is detected, the CPU 102 accesses the router means 140 (see FIG. 2) in the home (step S4). That is, for example, a command PING is issued to the router means 140 together with the IP address (step S4), and it is determined (confirmed) whether or not the router means 140 can be connected (step S5). If the connection is not established, the process proceeds to the next step S13, and the failure & response message (1) screen of FIG. 4 is displayed. In other words, “Error! Cannot connect because there is a problem with the network connection in the home” is displayed.

  If it is possible to connect to the router means 140 in step S5, the access is made to the subscribing access point 310 which is an Internet service provider (ISP) (step S6). Then, a determination is made as to whether or not connection to the subscribed access point 310 has been established (step S7). If the connection is not established, the process proceeds to the next step S14, and the failure & response message (2) screen of FIG. 4 is displayed. That is, the message “Error! Connection point ISP access point may not be able to connect because it is not currently operating” is displayed.

  If it is possible to connect to the subscription access point 310 in step S7, the URL of another site (for example, the portal site 320 of the manufacturer) on the Internet 300 is accessed (step S8). Then, it is determined whether or not the connection to the site 320 has been established (step S9). If the connection is established, the process proceeds to the next step S15, and the failure & response message (3) screen of FIG. 4 is displayed. That is, “Error! Cannot connect because the specified site (URL) may not be currently active” is displayed.

  If it is not possible to connect to another site (for example, manufacturer portal site 320) in step S9, the process proceeds to next step S19, and the failure & response message (7) screen of FIG. 4 is displayed. In other words, “Error! Currently unable to connect due to some problem on the Internet” is displayed.

  The present invention is a digital television broadcasting system that integrates digital television broadcasting and a network such as the Internet, and presents a failure cause that occurs on the network, which is suitable and useful for a television user, and its location (troubleshooting). ).

The block diagram of the structure of the digital television receiver which concerns on this invention. The block diagram of the whole structure of a digital television broadcast system including the digital television receiver as shown in FIG. The flowchart of operation | movement of the digital television broadcasting system of FIG. The figure which shows the example of a display of the failure & response message displayed on the display screen of a receiver based on the determination result of the several determination step in FIG. The flowchart which shows the other example of the operation | movement flow of the digital television broadcasting system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Digital television receiver 102 ... CPU (control means)
140: Router means 300 ... Internet (network)
310 ... access point (Internet service provider)
320 ... Maker portal site 330 ... Content service site 400 ... Broadcasting station
Agent Patent Attorney Susumu Ito

Claims (7)

In a digital television receiver having a network function and a browser function for accessing and browsing a desired site using the network function,
A digital television receiver comprising diagnostic means for diagnosing a trouble on a network path when a failure occurs. The diagnostic means includes
A method of diagnosing the presence or absence of connection each time a plurality of sites including a router means and an access point are sequentially accessed when a desired site is accessed and connection is not normally made. The digital television receiver according to 1. The diagnostic means includes
A first determination unit that accesses a predetermined site and determines whether or not the connection is successful;
A second determination means for accessing the router means directly connected to the digital television receiver and determining whether or not the connection is possible when it is determined that the first determination means cannot connect normally;
A third determination unit that accesses the access point and determines whether or not the connection is established when it is determined that the second determination unit can connect;
If it is determined by the second determination means that the connection could not be established, a means for issuing a message on the screen of the digital television receiver that the connection cannot be made due to a problem with the home network connection;
A fourth determination unit that determines whether or not a connection has been established by accessing another site on the network when the third determination unit determines that the connection has been established;
A means for issuing a message on the screen of the digital television receiver that the access point cannot be connected due to the possibility that the access point is not currently operating;
If it is determined that the connection has been established by the fourth determination means, means for issuing a message on the screen of the digital television receiver that the predetermined site cannot be connected due to the possibility that the predetermined site is not currently operating;
If it is determined by the fourth determination means that the connection could not be established, a means for presenting a message indicating that the connection is not possible due to some failure on the network;
The digital television receiver according to claim 1, further comprising: A digital broadcasting station capable of transmitting a digital TV broadcast wave, a digital function capable of receiving the digital TV broadcast wave, and having a network function and a browser function for accessing and browsing a desired site using the network function In a digital television broadcasting system comprising a television receiver and a network connected to the digital television receiver via its network function,
Means for notifying the broadcasting station of the situation when the service including the access point on the network is stopped due to its own trouble;
The broadcast station that has received the notification provides means for providing the failure information to the digital television receiver through a digital television broadcast wave;
A function provided in the digital television receiver for diagnosing a trouble on a network path when a failure occurs, on the network based on the diagnosis result and failure information provided from the broadcasting station through a digital television broadcast wave A diagnostic means having a function of comprehensively judging the failure status occurring at the site;
A digital television broadcasting system characterized by comprising: The diagnostic means includes
A first determination unit that accesses a predetermined site and determines whether or not the connection is successful;
A second determination means for accessing the router means directly connected to the digital television receiver and determining whether or not the connection is possible when it is determined that the first determination means cannot connect normally;
A third determination unit that accesses the access point and determines whether or not the connection is established when it is determined that the second determination unit can connect;
If it is determined by the second determination means that the connection could not be established, a means for issuing a message on the screen of the digital television receiver that the connection cannot be made due to a problem with the home network connection;
A fourth determination unit that determines whether or not a connection has been established by accessing another site on the network when the third determination unit determines that the connection has been established;
A means for issuing a message on the screen of the digital television receiver that the access point cannot be connected due to the possibility that the access point is not currently operating;
If it is determined that the connection has been established by the fourth determination means, means for issuing a message on the screen of the digital television receiver that the predetermined site cannot be connected due to the possibility that the predetermined site is not currently operating;
Fifth determination means for determining whether or not failure information is received by a digital television broadcast wave when it is determined that the connection by the fourth determination means has failed;
When it is determined by the fifth determination means that no failure information has been received in the digital TV broadcast wave, a message is displayed on the screen of the digital TV receiver indicating that the connection to the external network cannot be made due to an unknown reason. Means,
When it is determined by the fifth determination means that failure information has been received by a digital television broadcast wave, the predetermined screen is displayed on the screen of the digital television receiver according to the failure information provided from the broadcast station side. A means for issuing a message indicating that the site is not currently operating due to a failure, a message indicating that connection cannot be established due to a failure of the access point, or a message indicating that connection cannot be established due to some failure on the network;
The digital television broadcasting system according to claim 4, comprising:   6. The digital television broadcast system according to claim 4, wherein the digital television broadcast wave includes a data broadcast signal. A digital broadcasting station capable of transmitting a digital TV broadcast wave, a digital function capable of receiving the digital TV broadcast wave, and having a network function and a browser function for accessing and browsing a desired site using the network function A failure recovery support method in a digital television broadcasting system comprising a television receiver and a network connected to the digital television receiver via its network function,
As a result of the digital television receiver accessing the network, a first step of finding the presence / absence of a defect by itself;
A second step in which a site on the network notifies the broadcaster that a failure has occurred;
A third step in which the broadcast station that has received the notification provides the failure information to the digital television receiver through a digital television broadcast wave;
Based on the trouble information on the network found in the first step and the trouble information provided from the broadcasting station in the second step, the trouble that the digital television receiver has occurred at the site on the network A fourth step of comprehensively judging the situation;
A failure recovery support method characterized by comprising:

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