JP2014241526A - Broadcasting receiver and radio wave reception test program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadcasting receiver capable of surely executing a radio wave reception test without exerting adverse effects on viewing of a program.SOLUTION: A broadcasting receiver 3 includes: a test radio wave emission information storage part 40 for storing test radio wave emission information; a receiver information storage part 50 for storing receiver information; a receivable region determination part 60 for extracting installation region test radio wave emission information; a test execution determination part 72 for determining whether a test execution condition is satisfied or not; a test execution control part 74 for, when the test execution determination part 72 determines that the test execution condition is satisfied, performing execution control of a radio wave reception test; a reception propriety determination part 76 for determining reception propriety of a test radio wave Won the basis of a receiving state of the test radio wave W; and a determination result output part 78 for outputting a determination result of reception propriety by the reception propriety determination part 76.

Description

  The present invention relates to a broadcast receiver and a radio wave reception test program for determining whether or not a test radio wave can be received.

  Currently, the transition from terrestrial analog broadcasting to terrestrial digital broadcasting has been completed, and broadcast receivers compatible with terrestrial digital broadcasting have become widespread. This broadcast receiver is required to satisfy the standards described in Non-Patent Document 1 in order to realize a new function not found in conventional terrestrial analog broadcasting.

  Just before the transition from Tokyo Tower to Tokyo Sky Tree, the broadcast receiver performs a radio wave reception test to determine whether the test radio wave from Tokyo Sky Tree can be normally received. In this radio wave reception test, the broadcast radio wave of Tokyo Tower is temporarily switched to the test radio wave of Tokyo Sky Tree during the program broadcast. Then, the broadcast receiver determines the reception state of the test radio wave, and displays the contact information of the consultation counter on the L-shaped screen when the test radio wave of Tokyo Skytree cannot be received.

"ARIB STD-B21", The Japan Radio Industry Association, http://www.arib.or.jp/english/html/overview/doc/2-STD-B21v5_2.pdf

However, the conventional broadcast receiver has the following problems in the radio wave reception test.
Conventional broadcast receivers require viewers to watch programs when test radio waves are emitted. Therefore, the conventional broadcast receiver cannot perform the radio wave reception test when the viewer does not watch the program (that is, when the receiver is in a standby state).

  In addition, a radio wave reception test may be performed during broadcasting of a program with a high audience rating. In this case, for example, the broadcast receiver displays a warning message on the L-shaped screen, such as “Launching test radio waves from Sky Tree” or “Please contact the consultation desk if you cannot receive”. , Affect the viewing of the program.

  In this transition to Tokyo Sky Tree, a step-by-step test is conducted in which the test radio wave is emitted in a time zone when there are many viewers after the test radio wave is emitted in a low time zone (for example, midnight). . However, with this gradual test method, it is difficult to determine how much contact from the viewer that the test radio wave cannot be received is sent to the consultation desk. As a result, the manpower for countermeasures against reception failures is insufficient, which may cause viewers anxiety and lead to complaints from viewers. Furthermore, after the transition from Tokyo Tower to Tokyo Sky Tree, it is difficult to predict the number of receivers that cannot receive radio waves, and it is difficult to determine the appropriate start time for this operation.

  Accordingly, it is an object of the present invention to provide a broadcast receiver and a radio wave reception test program that can solve the above-described problems and that can reliably execute a radio wave reception test without adversely affecting viewing of a program.

  In order to solve the above problems, the broadcast receiver according to the present invention is based on test radio wave emission information including a test radio wave channel, test radio wave emission start time, and test radio wave emission area information. A broadcast receiver for determining whether or not radio waves can be received, the broadcast receiving unit, the test radio wave emission information storage unit, the receiver information storage unit, the test radio wave emission information extraction unit, the test execution control unit, and the reception availability A determination unit and a determination result output unit are provided.

  According to this configuration, the broadcast receiver receives the test radio wave emission information by the broadcast receiving unit using the receiver operation trigger table or the data carousel. This receiver operation trigger table is a table including test radio wave emission information, and is periodically transmitted as in the case of the existing software download trigger table (SDTT).

  The broadcast receiver stores the test radio wave emission information received by the broadcast reception unit by the test radio wave emission information storage unit. And a broadcast receiver memorize | stores the installation area information of a broadcast receiver beforehand by a receiver information storage part. Further, the broadcast receiver uses the test radio wave emission information extraction unit to extract the test radio wave of the area where the broadcast receiver is installed from the test radio wave emission information stored in the test radio wave emission information storage unit based on the emission area information and the installation area information. The installation area test radio wave emission information that is the emission information is extracted.

  In addition, the broadcast receiver activates the broadcast receiver so that the test execution control unit can receive the test radio wave at the launch start time of the installation area test radio wave emission information, and the broadcast reception unit sets the channel of the installation area test radio wave emission information. Tune in to receive test radio waves.

  The standby state is a state in which the broadcast receiver is on standby so that it can receive and activate the test radio wave emission information. For example, the standby state is a state where the power is turned off by the main body power button of the broadcast receiver or the power button of the remote controller corresponding to the broadcast receiver.

  The broadcast receiver determines whether or not the test radio wave can be received based on the reception state of the test radio wave received by the broadcast reception unit by the reception propriety determination unit. And a broadcast receiver outputs the determination result of the reception availability by a reception availability determination part by a determination result output part. As described above, the broadcast receiver can perform the radio wave reception test even when the viewer is not watching the program (that is, when the broadcast receiver is in a standby state).

In order to solve the above-described problems, a radio wave reception test program according to the present invention causes a computer to function as a broadcast receiver according to the present invention.
According to such a configuration, the radio wave reception test program can perform the radio wave reception test even when the viewer does not watch the program.

Here, in the above-described conventional technology, there is a problem that an arbitrary receiver operation is notified to the broadcast receiver, and the receiver operation notified at a predetermined time cannot be executed.
In order to solve this problem, the broadcast receiver according to the present invention is based on a receiver operation trigger table including a receiver operation type indicating a preset receiver operation and an operation start time of the receiver operation. A broadcast receiver for executing a receiver operation, comprising: a broadcast receiver; a receiver operation trigger table storage unit; a receiver operation execution control unit; and a receiver operation result output unit. To do.

  According to this configuration, the broadcast receiver receives the receiver operation trigger table periodically transmitted by the broadcast receiving unit or by the data carousel. Also, the broadcast receiver stores the receiver operation trigger table received by the broadcast receiving unit by the receiver operation trigger table storage unit. Then, the broadcast receiver receives the reception indicated by the receiver operation type of the receiver operation trigger table at the operation start time of the receiver operation trigger table stored in the receiver operation trigger table storage unit by the receiver operation execution control unit. Perform the machine operation. In this way, the broadcast receiver can reliably execute any receiver operation using the receiver operation trigger table as a trigger.

  According to the present invention, the radio wave reception test can be performed even when the viewer is not viewing the program. Thus, according to the present invention, the radio wave reception test can be reliably executed without adversely affecting the viewing of the program.

In embodiment of this invention, it is explanatory drawing explaining the outline of a radio wave reception test. It is a block diagram which shows the structure of the broadcast receiver of FIG. In embodiment of this invention, it is a figure which shows the data structure of the test radio wave emission information notified by RATT. In embodiment of this invention, it is a figure which shows the data structure of the descriptor inserted in test radio wave emission information. In embodiment of this invention, it is a figure which shows the data structure of the test radio wave emission information downloaded with the data carousel. It is a flowchart which shows operation | movement of the broadcast receiver of FIG.

(Embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In each embodiment, means having the same function are denoted by the same reference numerals and description thereof is omitted.

[Outline of radio wave reception test]
An outline of the radio wave reception test will be described with reference to FIG.
As shown in FIG. 1, the terrestrial digital broadcasting system 1 performs terrestrial digital broadcasting, and includes a first transmitting station 2 _A , a second transmitting station 2 _B, and a broadcast receiver 3. The terrestrial digital broadcasting system 1, as the operation, the first transmitting station 2 _A is the fact that firing airwaves W _A to the broadcast receiver 3.

In the terrestrial digital broadcasting system 1, there is a case where transfer from the first transmitting station 2 _A (for example, Tokyo Tower) to the second transmitting station 2 _B (for example, Tokyo Sky Tree) is performed. In this case, the digital terrestrial broadcasting system 1, previously fired test wave W _B from the second transmitting station 2 _B, the broadcast receiver 3 for receiving can estimate zone whether it can normally receive the test wave W _B It is necessary to test (radio wave reception test). Therefore, in the digital terrestrial broadcasting system 1, the firing start time of the test wave W _B, the channel of the test wave W _B, and a test radio wave information including the area information to fire testing radio wave W _B, advance to the second transmission Transmit from station 2 _B to broadcast receiver 3. This test radio wave emission information is transmitted to the broadcast receiver 3 by either the receiver operation trigger table or the data carousel similar to the engineering service.

A receiver action trigger table (RATT: Receiver Action Trigger Table) is a table that serves as a trigger for the broadcast receiver 3 to operate. RATT is a kind of program arrangement information (SI: Service Information) and includes test radio wave emission information. Further, RATT, like SDTT, e.g., as (see reference 1 and 2) transmitted from the first transmitting station _{2 A} in a cycle such as once every 3 minutes.

Reference 1: "ARIB STD-B21", The Japan Radio Industry Association, http://www.arib.or.jp/english/html/overview/doc/2-STD-B21v5_2.pdf
Reference 2: “ARIB TR-B14”, Radio Industries Association, http://www.arib.or.jp/english/html/overview/doc/4-TR-B14v5_0-1p3-1.pdf

The SDTT is a table that notifies the broadcast receiver 3 when (time), on which channel, to which broadcast receiver 3 the receiver software is transmitted, and is a kind of program arrangement information. That is, in the digital terrestrial broadcasting system 1, with reference to RATT, in SDTT the same mechanism, when (time), in which channel, to which the broadcast receiver 3, in advance whether the test wave W _B is fired You can be notified.

  The engineering service is a mechanism for updating and adding receiver software functions and updating common data. For example, in the engineering service of the digital terrestrial broadcasting system 1, the broadcast receiver 3 downloads the frequency list / change information using a data carousel for repacking. That is, in the terrestrial digital broadcasting system 1, the broadcast receiver 3 can download the test radio wave emission information using the data carousel.

And the broadcast receiver 3 memorize | stores the test radio wave emission information notified beforehand, and if the broadcast receiver 3 is a standby state, it will be started automatically by the test radio wave emission start time. Furthermore, the broadcast receiver 3 selects a channel of the test wave W _B, determines the receivability of the test wave W _B, and outputs the determination result of the receivability to contacts (e.g., broadcasters).

[Broadcast receiver configuration]
The configuration of the broadcast receiver 3 will be described with reference to FIG. 2 (see FIG. 1 as appropriate).
As shown in FIG. 2, the broadcast receiver 3 includes a broadcast receiving unit 10, a demultiplexing unit 20, a test radio wave emission information demultiplexing unit 30, a test radio wave emission information storage unit 40, and a receiver information storage unit 50. Receivable area determination unit (test radio wave emission information extraction unit) 60, broadcast reception control unit 70, power supply control unit 80, broadcast decoder unit 90, video / audio / data broadcast output unit 100, communication transmission Unit 110.
In FIG. 2, control and notification performed between the respective units are illustrated by broken lines, and information input / output of each unit is illustrated by solid lines.

Broadcast receiving unit 10 is configured to receive broadcast waves W _A, the broadcast wave such as a test wave W _B. For example, the broadcast receiving unit 10 selects a broadcast wave channel and performs digital demodulation processing and error correction processing to obtain a transport stream. Then, the broadcast receiving unit 10 outputs this transport stream to the demultiplexing unit 20.

The broadcast receiving unit 10, when the broadcast receiving test wave tuning command from the controller 70 to be described later is input, based on this test radio tuning command, selects a channel of the test wave W _B.
The test wave tuning command is a signal for commanding tuning test wave W _B, the channel of the test wave W _B is stored.

The broadcast receiving unit 10, as a test radio wave reception status indicating reception status of the test wave _{W B,} the test wave _W reception level of _{B (C / N: Carrier to} Noise ratio), bit error rate (BER: Bit Error Ratio ) Or a modulation error ratio (MER) is measured and output to the broadcast reception control unit 70.
The broadcast receiving unit 10 can arbitrarily set which item is measured as the test radio wave reception status.

  The demultiplexing unit 20 demultiplexes the transport stream input from the broadcast receiving unit 10. Specifically, the demultiplexing unit 20 separates the video signal, audio signal, data broadcast signal, and program arrangement information multiplexed in the transport stream. Then, the demultiplexing unit 20 outputs the separated video signal, audio signal, and data broadcast signal to the broadcast decoder unit 90.

Here, the demultiplexing unit 20 outputs the separated program arrangement information to the test radio wave emission information demultiplexing unit 30 when the test radio wave emission information is notified by RATT. On the other hand, when the test radio wave emission information is downloaded by the data carousel, the demultiplexing unit 20 outputs the separated data broadcast signal to the test radio wave emission information separation unit 30.
Note that the broadcast receiver 3 is set in advance whether the test radio wave emission information is notified by RATT, or the test radio wave emission information is downloaded by a data carousel.

In addition, when a test radio wave tuning command is input from the broadcast reception control unit 70, the demultiplexing unit 20 receives PSI (Program Specific Information), SI, PAT (Program Association Table), PMT (Program Map Table), EIT ( Event Information table), NIT (Network Information table), one of the tables, such as CAT (Conditional Access table) 1 or more, to monitor whether or not included in the transport stream of the test wave W _B. Then, demultiplexing section 20, as a table reception status indicating reception status of the test wave W _B, and outputs the monitoring result of the table to the broadcast reception control unit 70.
The demultiplexing unit 20 can arbitrarily set which table is monitored.

The test radio wave emission information separating unit 30 separates the test radio wave emission information from the program arrangement information or the data broadcast signal input from the demultiplexing unit 20. That is, when the test radio wave emission information is notified by RATT, the test radio wave emission information separation unit 30 separates the test radio wave emission information from the program arrangement information. On the other hand, the test radio wave emission information separating unit 30 separates the test radio wave emission information from the data broadcast signal when downloading the test radio wave emission information with the data carousel. Then, the test radio wave emission information separation unit 30 stores the separated test radio wave emission information in the test radio wave emission information storage unit 40.
Note that the method of extracting test radio wave emission information is not limited to this, and can be arbitrarily implemented by the broadcast receiver 3.

<Data structure of test radio wave emission information notified by RATT>
The data structure of the test radio wave emission information notified by RATT will be described with reference to FIG.
The test radio wave emission information in FIG. 3 has the following fields.

table_id (table identification) indicates a value specific to the test radio wave emission information.
In section_syntax_indicator (section syntax instruction), “0” or “1” is stored.
reserved_future_use is a reserved field for the future.
reserved is a reserved field for the future.

section_length (section length) defines the number of bytes of the section from immediately after the section length field to the end of the section including the CRC.
table_id_ext (table extension identification) indicates an identification value of a broadcast receiver that is a download target.

  version_number (version number) is the version number of the sub-table. The version number is incremented by “1” when there is a change in the information in the sub-table. The version number returns to ‘0’ when the value becomes ‘31’.

“1” is stored in current_next_indicator (current next instruction).
section_number (section number) indicates a section number.
last_section_number (last section number) indicates the number of the last section of the subtable to which the section belongs.

Receivers_action_type (receiver operation type) indicates the type of receiver operation such as a radio wave reception test and automatic scan. In the case of the radio wave reception test, for example, “0x01” is stored as the receiver operation type.
num_of_services indicates the number of organization channels performing the receiver operation announced in this table.

transport_stream_id (transport stream identification) is a label that identifies the transport stream from other multiplexes in the distribution system.
original_network_id (original network identification) is a label that defines the network identification of the original distribution system.
service_id (service identification) is a label for identifying the organization channel for performing the receiver operation (in this embodiment, radio wave emission test) announced in this table.

Here, the channel of the test wave W _B, it is possible to identify the transport stream identification, the original network identification, in combination with the service identification. That is, the “test radio wave channel” recited in the claims corresponds to a combination of transport stream identification, original network identification, and service identification.

As for test_level (test level), “01” indicates a compulsory test, and “00” indicates an arbitrary test.
content_description_length indicates the total byte length of the schedule loop and the descriptor loop.
schedule_description_length (schedule description length) indicates the byte length of the schedule loop.

start_time (start time) indicates the start time of receiver operation (in this embodiment, radio wave emission test) in Japan Standard Time (JST) and Modified Julian Day (MJD). That is, the start time corresponds to the “test radio wave emission start time” recited in the claims.
The duration (duration) indicates the duration of the receiver operation (in this embodiment, a radio wave emission test).

In descriptors (), descriptors (FIG. 4) necessary for the receiver operation indicated by the receiver operation type are inserted. For example, the descriptor of Figure 4, as the firing area information of the test wave W _B, area identification value (area_code), or at least one of the postal code (zip_code) is stored.

Here, each information stored in the descriptor (test_signal_descriptor ()) of FIG. 4 will be described.
descriptor_tag indicates an identification value for identifying this descriptor.
descriptor_length indicates the identification value length of this descriptor.
area_code (area identification), the test wave W _B is a value indicating an area to be fired.
zip_code (zip code), the test radio wave W _B is the zip code of the area to be fired.

4 may store one or more of preparation time, receiver manufacturer information, receiver model information, determination result contact information, and preparation time (not shown). .
The receiver manufacturer information is information indicating the receiver manufacturer that is the subject of the radio wave emission test.
The receiver model information is information indicating a receiver model to be subjected to a radio wave emission test.
The determination result contact information is information indicating a contact (for example, a broadcasting station) of the determination result of the radio wave emission test.

The preparation time (margin time) is the time required for the broadcast receiver 3 to prepare for the radio wave reception test. Here, preparation time activates the broadcast receiver 3 in the standby state, the time until ready to receive a test wave W _B (e.g., 10 seconds) is set in advance. Further, the preparation time may be set in consideration of the time required for three radio wave reception tests, as in an operation example at the time of transition to a transmitting station to be described later.

  CRC_32 is a 32-bit field that includes a CRC value that causes the register output to be zero after processing the entire section in the decoder defined in Appendix B of ARIB STD-B10.

  The above-mentioned area identification value, zip code, receiver manufacturer information, receiver model information, judgment result contact information and preparation time are not stored in the descriptor of FIG. 4, but are independent of the test radio wave emission information of FIG. It may be provided as a field.

<Data structure of test radio wave emission information downloaded by data carousel>
With reference to FIG. 5, the data structure of the test radio wave emission information downloaded by the data carousel will be described (see FIGS. 3 and 4 as appropriate).
The test radio wave emission information in FIG. 5 has the following fields.

module_length (module length) indicates the data length after the module_data_version field.
Module_data_version (module data version value) is incremented by “1” every time the version number and contents of the module data change. The module data version value is operated in accordance with the value described in module_info_byte in SDTT.
text_char (notification description) describes a character string for notifying the viewer.

In FIG. 5, the description of the same fields as in FIGS. 3 and 4 is omitted.
Further, the area identification value, zip code, receiver manufacturer information, receiver model information, determination result contact information and preparation time are stored in text_char or reserved_future_use in FIG.

Returning to FIG. 2, the configuration of the broadcast receiver 3 will be described.
The test radio wave emission information storage unit 40 is a storage device such as a memory or a hard disk that stores the test radio wave emission information extracted by the test radio wave emission information separation unit 30.

  The receiver information storage unit 50 is a storage device such as a memory or a hard disk that stores receiver information in advance. For example, the receiver information includes at least one of an area identification value (area_code) or a zip code (zip_code) as the installation area information of the broadcast receiver 3. The receiver information may include one or more of receiver manufacturer information, receiver model information, a serial number, and receiver channel setting information.

Here, each information included in the receiver information will be described.
The area identification value is a value indicating the area where the broadcast receiver 3 is installed.
The zip code is the zip code of the area where the broadcast receiver 3 is installed.
The receiver manufacturer information is information indicating the receiver manufacturer that manufactured the broadcast receiver 3.
The receiver model information is information indicating a model of the broadcast receiver 3.
The production number is the production number of the broadcast receiver 3.
The receiver channel setting information is information indicating all channels set in the broadcast receiver 3.

  The area identification value and zip code of the receiver information are set when the viewer performs initial setting of the broadcast receiver 3. In addition, the receiver manufacturer information, the receiver model information, and the serial number of the receiver information are set when the broadcast receiver 3 is manufactured, for example.

  The receivable area determination unit 60 installs the test radio wave emission information of the area where the broadcast receiver 3 is installed from the test radio wave emission information of the test radio wave emission information storage unit 40 based on the emission area information and the installation area information. It extracts regional test radio wave emission information.

  Specifically, the receivable area determination unit 60 extracts receiver information from the receiver information storage unit 50. Further, the receivable area determination unit 60 compares the emission area information of the test radio wave emission information stored in the test radio wave emission information storage unit 40 with the installation area information of the extracted receiver information. Then, the receivable area determination unit 60 extracts test radio wave emission information whose emission area information matches the installation area information as installation area test radio wave emission information. Further, the receivable area determination unit 60 outputs the extracted installation area test radio wave emission information to the broadcast receiver control unit 70.

  The broadcast reception control unit 70 performs determination and control necessary for the radio wave reception test. The broadcast reception control unit 70 includes a test execution determination unit 72, a test execution control unit 74, a reception availability determination unit 76, and a determination result output unit 78. Prepare. The broadcast reception control unit 70 may be implemented in advance as hardware by a receiver manufacturer, or may be realized by an application installed in the broadcast receiver 3.

Here, in the terrestrial digital broadcasting system 1, it is conceivable that the determination results are concentrated and transmitted from a large number of broadcast receivers 3, thereby congesting the network and increasing the load on the contact server. Further, in the terrestrial digital broadcasting system 1, it is conceivable that telephone contact of the radio wave reception test is concentrated on the consultation desk from the viewer. Further, the digital terrestrial broadcasting system 1, from the viewpoint of power saving, it is not necessary to start the broadcast receiver 3 areas that can not receive the test wave W _B.

  Therefore, the test execution determination unit 72 determines whether or not a predetermined test execution condition is satisfied from the viewpoint of decentralization and power saving. The test execution condition is a condition for executing the radio wave reception test, and is arbitrarily set. That is, when the test execution determination unit 72 determines that the test execution condition is satisfied, a radio wave reception test is performed. On the other hand, when the test execution determination unit 72 determines that the test execution condition is not satisfied, the radio wave reception test is not performed.

<First example of test execution conditions: decentralization based on test radio wave emission information>
Hereinafter, three specific examples of test execution conditions will be described.
In the digital terrestrial broadcasting system 1, each broadcast receiver 3 is a grouping unit combining any one or two or more of the area identification value of the test radio wave emission information, the zip code, the receiver manufacturer information, and the receiver model information. Group. The digital terrestrial broadcasting system 1 transmits test radio wave emission information in which different start times are set for each group to each broadcast receiver 3.

  In the first example, the test execution condition is set in advance based on whether or not the test radio wave emission information of the group to which the broadcast receiver 3 belongs is stored in the test radio wave emission information storage unit 40. Specifically, the test execution determination unit 72 includes information corresponding to the grouping unit in the receiver information (area identification value, zip code, receiver manufacturer information, and receiver model information, or a combination of two or more. ) To obtain a group to which the broadcast receiver 3 belongs. Then, the test execution determination unit 72 determines whether the test radio wave emission information of the obtained group is stored in the test radio wave emission information storage unit 40.

Here, when the test radio wave emission information of the obtained group is stored, the test execution determination unit 72 determines that the test execution condition is satisfied. In this case, the test execution determination unit 72 instructs the receivable area determination unit 60 to extract the test radio wave emission information of the group to which the broadcast receiver 3 belongs.
On the other hand, the test execution determination unit 72 determines that the test execution condition is not satisfied when the test radio wave emission information of the obtained group is not stored.

<Second example of test execution conditions: decentralization by broadcast receiver>
In the second example, the test execution condition is set in advance on the condition that the last digit of the serial number of the receiver information matches the last digit of the system date.

Here, the test execution determination unit 72 determines that the test execution condition is satisfied when the last digit of the serial number matches the last digit of the system date.
On the other hand, the test execution determination unit 72 determines that the test execution condition is not satisfied when the last digit of the serial number does not match the last digit of the system date.

<Third example of test execution conditions: Power saving by test radio wave emission information>
In a third example, the testing radio wave information, the broadcast area information indicating the test wave W _B reaches the range of the second transmitting station 2 _B is added. In addition, the test execution determination unit 72 can determine to which broadcast area the broadcast receiver 3 belongs from the combination of all channels set in the receiver channel setting information. For example, the test execution determination unit 72 can determine that the broadcast area of the broadcast receiver 3 belongs to Tokyo if the combination of all channels in the receiver information is five stations in Tokyo. Therefore, the test execution condition is set in advance based on whether or not the broadcast area obtained from the receiver channel setting information is included in the broadcast area information.

Here, the test execution determination unit 72 determines that the test execution condition is satisfied when the broadcast area information includes the broadcast area obtained from the receiver channel setting information.
On the other hand, when the broadcast area information does not include the broadcast area obtained from the receiver channel setting information, the test execution determination unit 72 determines that the test execution condition is not satisfied.

Note that the test execution determination unit 72 sets in advance which of the first to third examples described above is to be used.
The test execution conditions are not limited to the first to third examples described above, and may be any conditions as long as a large number of broadcast receivers 3 can be distributed.

When the test execution determination unit 72 determines that the test execution condition is satisfied, the test execution control unit 74 performs execution control of the radio wave reception test described below.
First, the test execution control unit 74 determines whether or not the broadcast receiver 3 has been activated at a time that is backed by the preparation time from the start time of the installation area test radio wave emission information. For example, the test execution control unit 74 inquires of the power supply control unit 80 described later as to whether or not the broadcast receiver 3 is in an activated state (activation state inquiry). Then, the test execution control unit 74 determines whether or not the broadcast receiver 3 is activated based on the activation state inquiry result from the power supply control unit 80.

Here, the broadcast receiver 3 is not activated, can not receive the test wave W _B, is that the state can not perform the radio wave reception test. That is, the state in which the broadcast receiver 3 is not activated includes a standby state and a state in which the main power supply of the broadcast receiver 3 is cut off.

Then, the test execution control unit 74, when the broadcast receiver 3 has not been started, starts the broadcast receiver 3 to be able to receive test wave W _B to the start time of the installation area test radio wave transmitting information. Specifically, the test execution control unit 74 commands the power supply control unit 80 to start the broadcast receiver 3 (start command). After the broadcast receiver 3 is activated, the test execution control unit 74 instructs the broadcast receiving unit 10 to _select the channel of the test radio wave WB stored in the installation area test radio wave emission information (test radio wave selection command). ).
The execution control of the radio wave received test as described above, the broadcast receiver 3 starts until the firing start time of the test wave W _B, it is possible to perform the electric wave reception test.

  The test execution control unit 74 preferably returns the broadcast receiver 3 to the state before the radio wave reception test after the radio wave reception test is completed. For example, when the determination result output unit 78 described later outputs a test result, the test execution control unit 74 instructs the power supply control unit 80 to place the broadcast receiver 3 in a standby state (standby command).

The test execution control unit 74 does not perform execution control of the radio wave reception test when the test execution determination unit 72 determines that the test execution condition is not satisfied.
In addition, the broadcast receiver 3 performs a radio wave reception test by a conventional method when the broadcast receiver 3 is not in a standby state and is already activated.

Reception determination unit 76 based on the reception state of the test wave W _B, is to determine the receivability test wave W _B. That is, the reception determination unit 76, is input from the broadcast receiving unit 10 test radio wave reception status, or, based on at least one of the tables received status input from the demultiplexing unit 20, a reception possibility of testing radio W _B judge.

<Specific example of determination method using test radio wave reception status>
Hereinafter, a specific example of the determination method using the test radio wave reception status will be described.
As described below, the reception availability determination unit 76 can arbitrarily set a determination method using the test radio wave reception status.

For example, consider a case where only the reception level measurement result is included in the test radio wave reception status. In this case, the reception determination unit 76, a threshold determination of the received level, decides receivability test wave W _B. That is, the reception determination unit 76 determines that can receive a test wave W _B when the above reception level reaches a preset threshold value, and not receive the test wave W _B when the reception level is less than the threshold value determination To do.

Further, consider a case where the test radio wave reception status includes the measurement result of the reception level and the bit error rate. In this case, the reception determination unit 76 determines, by the threshold determination of the reception level and the bit error rate, the reception possibility of the test wave W _B. That is, the reception determination unit 76, both of the reception level and the bit error rate determines the test wave W _B can be received when the threshold value or more, when less than either one but the threshold of the reception level and the bit error rate judged impossible receives the test wave W _B.

Alternatively, the reception permission determination section 76, one of the reception level and the bit error rate determines the test wave W _B can be received when the threshold value or more, when both of the reception level and the bit error rate is less than the threshold value the test wave W _B may determine the unreceivable.

<Specific example of determination method using table reception status>
Hereinafter, a specific example of the determination method using the table reception status will be described.
As will be described below, the reception availability determination unit 76 can arbitrarily set a determination method using the table reception status.

For example, consider a case where only the PSI monitoring result is included in the table reception status. In this case, it determines the reception determination unit 76, if included in the transport stream PSI test wave W _B, and can receive a test wave W _B. On the other hand, the reception determination unit 76, if it is not included in the transport stream PSI test wave W _B, determines that the unreceivable test wave W _B.

Also, consider the case where the table reception status includes PSI and SI monitoring results. In this case, the reception determination unit 76, if both the PSI and SI are included in the transport stream of the test wave W _B, determines that can receive a test wave W _B. On the other hand, the reception determination unit 76 determines, if it is not included in the transport stream of one or the other even test wave W _B of PSI and SI, and not receive the test wave W _B.

Alternatively, the reception permission determination section 76, if included in the transport stream of one or the other even test wave W _B of PSI and SI, may determine that can receive a test wave W _B. On the other hand, the reception determination unit 76, unless both the PSI and SI are included in the transport stream of the test wave W _B, may be determined to not receiving a test wave W _B.
The reception determination unit 76 combines the test radio wave reception status and table reception status, is of course to be able to determine the receivability test wave W _B.

The determination result output unit 78 outputs a reception result determination result by the reception permission determination unit 76.
Specifically, the determination result output unit 78 determines whether or not the broadcast receiver 3 is connected to the network. For example, the determination result output unit 78 determines that the broadcast receiver 3 is connected to the network when an IP (Internet Protocol) address is set in the broadcast receiver 3. Further, the determination result output unit 78 executes a 'ping' command on the contact of the determination result contact information, and when there is a response from the contact, determines that the broadcast receiver 3 is connected to the network. Also good.

Here, the determination result output unit 78, when the broadcast receiver 3 is connected to the network, the determination result of the receiving availability of the above test wave W _B, and a determination result contact information, communication transmitting unit to be described later To 110. When the broadcast receiver 3 is connected to the network, the determination result, whether or not it receives the test wave W _B, it is sent to the contact.

  On the other hand, if the broadcast receiver 3 is not connected to the network and the determination result cannot be received, the determination result output unit 78 sends a preset caution message to the video / audio / data broadcast output unit 100. Output. Here, the determination result output unit 78 may output a caution message to the video / audio / data broadcast output unit 100 when the broadcast receiver 3 is started next time after completing the radio wave reception test.

This note message is, for example, such as "please contact the consultation so could not receive the test radio waves", which is a message indicating that it has not received the test radio wave W _B. Further, the caution message may be a character string described in _char (notification description) in FIG.

  The determination result output unit 78 does not need to perform any processing when the broadcast receiver 3 is not connected to the network and the determination result can be received.

The power controller 80 controls the power of the broadcast receiver 3.
Here, when an activation command is input from the broadcast reception control unit 70, the power supply control unit 80 turns on the power of the broadcast receiver 3 and activates the broadcast receiver 3.
In addition, when a standby command is input from the broadcast reception control unit 70, the power control unit 80 turns off the power of the broadcast receiver 3 and puts the broadcast receiver 3 into a standby state.
In addition, when the activation state query is input from the broadcast reception control unit 70, the power supply control unit 80 displays the activation state inquiry result indicating whether or not the broadcast receiver 3 is activated, as a result of the broadcast reception control unit 70. Output to.

  The broadcast decoder unit 90 decodes the video signal and audio signal input from the demultiplexing unit 20. The broadcast decoder unit 90 outputs the decoded video signal and audio signal to the video / audio / data broadcast output unit 100 together with the data broadcast signal input from the demultiplexing unit 20.

The video / audio / data broadcast output unit 100 outputs the video signal, the audio signal, and the data broadcast signal input from the broadcast decoder unit 90 so that the viewer can view them.
Further, when a caution message is input from the broadcast reception control unit 70, the video / audio / data broadcast output unit 100 displays the caution message on the L-shaped screen. After displaying the caution message, the video / audio / data broadcasting output unit 100 displays an operation instruction message such as “please press the blue button” for the viewer to erase the L-shaped screen and turn off the power. It is preferable to do.

  The communication transmission unit 110 transmits the determination result input from the broadcast reception control unit 70 to a contact indicated by the determination result contact information via a network (not shown).

[Radio wave reception test operation]
The radio wave reception test operation by the broadcast receiver 3 will be described with reference to FIG. 6 (see FIG. 2 as appropriate).
It is assumed that the broadcast receiver 3 is in a standby state when performing the radio wave reception test operation of FIG.

Broadcast receiver 3, by the broadcast receiving unit 10, by receiving broadcast radio waves W _A, the broadcast wave such as a test wave W _B, selects a channel of a broadcast wave is subjected to digital demodulation processing and error correction processing, Obtain a transport stream. Then, the broadcast receiver 3 separates the video signal, audio signal, data broadcast signal, and program arrangement information multiplexed in the transport stream by the demultiplexing unit 20 (step S1).
The broadcast receiver 3 causes the test radio wave emission information storage unit 40 to store the test radio wave emission information separated in step S1 by the demultiplexing unit 20 (step S2).

  The broadcast receiver 3 uses the receivable area determination unit 60 to extract the receiver information from the receiver information storage unit 50, and compares the installation area information of the extracted receiver information with the emission area information of the test radio wave emission information. To do. Then, the broadcast receiver 3 uses the receivable area determination unit 60 to extract test radio wave emission information whose emission area information matches the installation area information as installation area test radio wave emission information (step S3).

The broadcast receiver 3 uses the test execution determination unit 72 to determine whether the test execution condition is satisfied using any of the first to third examples (step S4).
Here, the description will be continued assuming that the test execution condition is satisfied.

The broadcast receiver 3 performs execution control of the radio wave reception test by the test execution control unit 74. Specifically, the broadcast receiver 3 determines whether or not the broadcast receiver 3 is in a standby state at a time that is backed by the preparation time from the start time of the installation area test radio wave emission information by the test execution control unit 74. To do. Then, when the broadcast receiver 3 is in a standby state, the broadcast receiver 3 instructs the power supply control unit 80 to start the broadcast receiver 3 and the test is performed with respect to the broadcast receiver 10. commanding the channel selection of the radio wave _{W B} (step S5).

Broadcast receiver 3, the reception determination unit 76, based on at least one of the test radio wave reception status or table reception status, determines receivability test wave W _B (step S6).

The broadcast receiver 3 outputs the determination result of step S6 by the determination result output unit 78. Specifically, when the broadcast receiver 3 is connected to the network by the determination result output unit 78, the broadcast receiver 3 sends the determination result of step S6 to a contact (for example, a broadcasting station) via the network. Send to. On the other hand, when the broadcast receiver 3 is not connected to the network and the determination result cannot be received by the determination result output unit 78, the broadcast receiver 3 outputs a caution message (step S7).
The broadcast receiver 3 instructs the power supply control unit 80 to place the broadcast receiver 3 in a standby state by the test execution control unit 74 (step S8).

<Example of operation when moving to a transmitting station>
Hereinafter, an operation example at the time of transfer from the first transmitting station 2 _A (for example, Tokyo Tower) to the second transmitting station 2 _B (for example, Tokyo Sky Tree) will be described.

The broadcast receiver 3 receives the test radio wave emission information by RATT or data carousel and stores it in the test radio wave emission information storage unit 40. Then, the broadcast receiver 3 before firing disclosure starting time of the test wave W _B, activates the broadcast receiver 3, selects a channel of the test wave W _B. The broadcast receiver 3 determines receivability airwave W _A from the first transmitting station 2 _A. Then, the broadcast receiver 3 determines receivability test wave W _B from the second transmitting station 2 _B. Furthermore, the broadcast receiver 3 may determine the receivability of the broadcast wave W _A from the first transmitting station 2 _A again.

Thus, the broadcast receiver 3, before and after to determine the receivability test wave W _B from the second transmitting station 2 _B, determining the receivability of the broadcast wave W _A from the first transmitting station 2 _A There is. Therefore, in the broadcast receiver 3, it is preferable to set the preparation time in consideration of the time required for these three radio wave reception tests.

Broadcast receiver 3, broadcast waves W _A from the first transmitting station 2 _A are possible reception, and, if the test wave W _B from the second transmitting station 2 _B can not receive, the second transmitting station 2 _It is determined that there is a reception failure accompanying the transition of _B. The broadcast receiver 3, broadcast waves W _A from the first transmitting station 2 _A are possible reception, and, if the test wave W _B from the second transmitting station 2 _B can receive, and no radio interference judge. Furthermore, the broadcast receiver 3, broadcast waves W _A from the first transmitting station 2 _A is is not received, and if the test wave W _B from the second transmitting station 2 _B receivable, there radio disturbance Is determined.

Broadcast receiver 3 via the network, along with the determination result of the reception whether the test wave W _B, transmits the presence or absence of reception failures in the broadcast station. Thereafter, the broadcast receiver 3 returns to the standby state.

Incidentally, the broadcast receiver 3, there are also cases where receiving the broadcast waves from other transmitting stations other than the first transmitting station 2 _A. In this case, the broadcast receiver 3, if the reception level of the test wave W _B from the second transmitting station 2 _B is higher than the reception level of the broadcast wave from another transmitting station, performs automatic scanning, the test wave W _B It is preferable to switch to.

[Action and effect]
The broadcast receiver 3 can perform a radio wave reception test even when the viewer is not watching a program and is in a standby state. As a result, the broadcast receiver 3 can reliably execute the radio wave reception test without adversely affecting the viewing of the program. Therefore, for example, the broadcast receiver 3 has a great effect in reducing problems associated with the relocation of the Tokyo Sky Tree, and can contribute to the relocation of the transmitting station of the base station later. In particular, the broadcast receiver 3 allows the broadcast station to automatically grasp the determination result of whether or not reception is possible, considering the increase in cooperation between the broadcast and the network, and the effect is extremely large.

  When connected to the network, the broadcast receiver 3 can reliably transmit the determination result of the radio wave reception test to the contact address via the network. In addition, when the broadcast receiver 3 is not connected to the network and the determination result is a brain that cannot be received, the broadcast receiver 3 can prompt the viewer to contact the consultation counter by displaying a caution message.

Broadcast receiver 3, since the start-up at the time going back only preparation time from the start time of the installation area test radio wave information, it is possible to prevent a situation in which the radio reception test is not in time to launch the start of the test radio wave W _B.

  From the viewpoint of decentralization and power saving, the broadcast receiver 3 does not start when the radio wave reception test is unnecessary and does not perform the radio wave reception test. As a result, the broadcast receiver 3 can reduce network congestion, increased load on the contact server, and concentration of contact with the consultation service.

  When the digital terrestrial broadcasting system 1 notifies the test radio wave emission information by RATT, since the RATT is a new table, the influence on the existing system can be suppressed and the versatility can be improved. In addition, the terrestrial digital broadcasting system 1 can use the existing engineering service when downloading the test radio wave emission information with the data carousel, so that it can be introduced at a low cost.

(Modification 1: Method for determining whether or not reception is possible)
The broadcast receiver 3 according to the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist thereof.

In the embodiment described above, the determination of receiving availability of the test wave W _B, has been described as using at least one of the test radio wave reception status or table reception status, but is not limited thereto.
That is, broadcast decoder unit 90 determines whether or not decode the multiplexed video signal into a transport stream of the test wave W _B. Then, broadcast decoder unit 90, a decoding status indicating the reception state of the test wave W _B, and outputs the judgment result of decoding the broadcast reception control unit 70.
Reception determination unit 76, to indicate that a decoding status could decode the video signal and determines that can receive a test wave W _B. On the other hand, the reception determination unit 76, indicating that the decoding status can not be decoded video signal, it is determined that not receiving a test wave W _B.

(Modification 2: New receiver operation)
In the above-described embodiment, RATT is a trigger for a radio wave reception test at the time of relocation of a transmitting station, but is not limited to this.
In RATT, a new receiver operation other than the radio wave reception test at the time of relocation of the transmitting station can be defined. For example, as a new receiver operation, there is one that causes the broadcast receiver 3 to perform a radio wave reception test when a new CAS (Conditional Access System) is adopted. Further, as a new receiver operation, there is one that causes the broadcast receiver 3 to perform a frequency scan (auto scan) when the transmitting station frequency is changed all at once.

  The broadcast receiver 3 has, for example, “0” for the radio wave reception test when the transmitting station is moved, “1” for the radio wave reception test when adopting the new CAS, and “2” for the auto scan. And set in advance.

  Here, consider a case where the broadcast station wants the broadcast receiver 3 to execute some receiver operation. In this case, the broadcasting station describes a type indicating the receiver operation in receivers_action_type (receiver operation type), and generates a RATT in which the operation start time of the receiver operation is described in start_time (start time). Then, the broadcast station transmits the generated RATT to the broadcast receiver 3 via the transmitting station.

The broadcast receiving unit 10 receives the broadcast radio wave from the transmitting station, and outputs a transport stream in which RATT is multiplexed to the demultiplexing unit 20.
The demultiplexer 20 separates the program arrangement information from the transport stream and outputs it to the test radio wave emission information separator 30.
The test radio wave emission information separation unit 30 separates RATT from the program arrangement information and stores it in the test radio wave emission information storage unit (receiver operation trigger table storage unit) 40.

The test execution control unit (receiver operation execution control unit) 74 executes the receiver operation indicated by the receiver operation type at the RATT start time stored in the test radio wave emission information storage unit 40.
For example, when the receiver operation type is “0”, the test execution control unit 74 executes a radio wave reception test at the time of relocation of the transmitting station, as in the above-described embodiment. In addition, when the receiver operation type is “1”, the test execution control unit 74 executes a radio wave reception test when adopting the new CAS. In addition, the test execution control unit 74 executes auto scan when the receiver operation type is “2”.

  The determination result output unit (receiver operation result output unit) 78 outputs the result of the receiver operation executed by the test execution control unit 74 as necessary. For example, when the broadcast receiver 3 is connected to the network, the determination result output unit 78 outputs the result of the receiver operation to the communication transmission unit 110 as necessary. Then, the communication transmission part 110 transmits the result of this receiver operation | movement to a contact address (for example, broadcast station) via a network.

In this way, the broadcast receiver 3 can execute an arbitrary receiver operation using RATT as a trigger.
The broadcast receiver 3 is not limited to the three receiver operations described above.

(Other variations)
The data structure of the test radio wave emission information is not limited to FIGS.
For example, if the first transmitting station 2 _A and a second transmitting station 2 _B are separated, the test radio wave information may include the area identification values or zip code of the first transmitting station 2 _A.

  In the above-described embodiment, the broadcast receiver 3 has been described as independent hardware, but the present invention is not limited to this. For example, the broadcast receiver 3 can also be realized by a radio wave reception test program that causes hardware resources such as a CPU, a memory, and a hard disk included in a computer to operate cooperatively as the above-described units. This radio wave reception test program may be distributed through a communication line, or may be distributed by writing in a recording medium such as a CD-ROM or a flash memory.

DESCRIPTION OF SYMBOLS 1 Terrestrial digital broadcasting system 2 _A 1st transmitting station 2 _B 2nd transmitting station 3 Broadcast receiver 10 Broadcast receiving part 20 Demultiplexing part 30 Test radio wave emission information separation part 40 Test radio wave emission information storage part (receiver operation trigger table storage) Part)
50 Receiver information storage unit 60 Receivable area determination unit (test radio wave emission information extraction unit)
70 Broadcast reception control unit 72 Test execution determination unit 74 Test execution control unit (receiver operation execution control unit)
76 Receivability determination unit 78 Determination result output unit (receiver operation result output unit)
80 Power Control Unit 90 Broadcast Decoder Unit 100 Video / Audio / Data Broadcast Output Unit 110 Communication Transmitter

Claims (6)

A broadcast receiver that determines whether or not to receive the test radio wave based on test radio wave information including a test radio wave channel, the test radio wave emission start time, and the test radio wave emission area information,
A broadcast receiving unit for receiving the test radio wave emission information by a periodically transmitted receiver operation trigger table or data carousel;
A test radio wave emission information storage unit for storing the test radio wave emission information received by the broadcast receiving unit;
A receiver information storage unit for preliminarily storing installation area information of the broadcast receiver;
Based on the emission area information and the installation area information, from the test radio wave emission information of the test radio wave emission information storage unit, the installation area test radio wave emission information which is the test radio wave emission information of the area where the broadcast receiver is installed. A test radio wave emission information extraction unit to extract,
The broadcast receiver is activated so that the test radio wave can be received at the launch start time of the installation area test radio wave emission information, and the broadcast reception unit is tuned to select the channel of the installation area test radio wave emission information. A test execution control unit for receiving
Based on the reception state of the test radio wave received by the broadcast reception unit, a reception availability determination unit that determines whether the test radio wave can be received,
A determination result output unit that outputs a determination result of whether or not reception is possible by the reception capability determination unit;
A broadcast receiver comprising: The determination result output unit includes:
Determining whether the broadcast receiver is connected to a network;
When the broadcast receiver is connected to a network, the determination result is transmitted to a predetermined contact via the network,
When the broadcast receiver is not connected to a network and the determination result indicates that the test radio wave cannot be received, a preset message or test radio wave emission information received by the broadcast receiver The broadcast receiver according to claim 1, wherein the described message is displayed.   The test execution control unit determines whether or not the broadcast receiver is not activated at a time that is back by a preset preparation time from the launch start time of the installation area test radio wave emission information, and receives the broadcast The broadcast receiver according to claim 1 or 2, wherein the broadcast receiver is activated when the machine is not activated. A test execution determination unit for determining whether or not a test execution condition set in advance is satisfied;
The said test execution control part does not start the said broadcast receiver, when the said test execution determination part determines with not satisfy | filling the said test execution conditions, The broadcast receiver is any one of Claims 1-3 characterized by the above-mentioned. The broadcast receiver described.   A radio wave reception test program for causing a computer to function as the broadcast receiver according to claim 1. A broadcast receiver that executes the receiver operation based on a receiver operation trigger table including a receiver operation type indicating a preset receiver operation and an operation start time of the receiver operation,
A broadcast receiver that receives the receiver operation trigger table by periodically transmitted or data carousel;
A receiver operation trigger table storage unit for storing a receiver operation trigger table received by the broadcast receiver;
A receiver operation execution control unit that executes the receiver operation indicated by the receiver operation type of the receiver operation trigger table at the operation start time of the receiver operation trigger table stored in the receiver operation trigger table storage unit;
A broadcast receiver comprising:

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