KR101127698B1 - System for measurement and analysys of broadcast transmission signal quality for terrestrial broadcating network - Google Patents

Abstract

PURPOSE: A broadcasting reception quality measuring and analyzing system is provided to implement various types of measurement. CONSTITUTION: An antenna selection unit(220) selects a plurality of antennas according to a measurement mode setup value. A reception quality measurement unit(240) selects kind of measuring instrument according to the measurement mode setup value. The reception quality measurement unit measures reception quality of a broadcasting signal. An analysis unit(250) supplies the measurement mode setup value to the antenna selection unit.

Description

Broadcasting reception quality measurement and analysis system for terrestrial broadcasting {SYSTEM FOR MEASUREMENT AND ANALYSYS OF BROADCAST TRANSMISSION SIGNAL QUALITY FOR TERRESTRIAL BROADCATING NETWORK}

The present invention relates to a broadcast reception quality measurement and analysis system for terrestrial broadcasting, and more particularly, to a broadcast reception quality measurement and analysis system capable of simultaneously measuring and analyzing multiple media and multiple channels.

The media market is rapidly developing with the development of digital production, compression technology, the spread of wired and wireless Internet, the emergence of various transmission and service platforms, the widening of transmission technology, the development of terminal technology, the change of lifestyle and the killer service.

Radio waves experience signal level attenuation, fading, distortion, and noise ingress during transmission from the transmitting station to the terminal. In order to provide high quality terrestrial broadcasting, the radio wave should be delivered to the viewer in a good state more than the reception state. To this end, broadcasters measure broadcast reception quality and expand broadcast service areas that can provide high-quality services in areas with poor reception by installing transmitters, enhancing transmission power, and installing repeaters. Field strength is the most measured item for evaluating reception quality in various terrestrial broadcasting media. In most cases, an area is considered good if it has a field strength above the standard required by the medium.

Korean Unexamined Patent Publication No. 10-2007-0108753 (prior patent) relates to a "DMB transmission signal quality measuring apparatus and method thereof, and a DMB broadcasting receiving system using the same". However, the prior patent discloses a measuring apparatus for one broadcasting medium, but is not suitable for a system for measuring and analyzing reception quality for a multi-media and a multi-channel suitable for an actual broadcasting environment.

On the other hand, the conventional broadcast reception quality measurement proceeded in the form of moving the measurement vehicle to the measurement point and stopping, and then measuring and adjusting the field strength meter and receiver settings by the operator directly and recording the result. Due to such manual work, a lot of time and manpower is required for broadcasting network management, and errors in measurement settings are often involved in the measurement of equipment setting and evaluation of measurement results. There was a problem in securing. In addition, there was a problem that it is difficult to systematically manage the measurement results DB because it depends on manual measurement.

The present invention intends to propose a "broadcast reception quality measurement and analysis system" that can be commonly applied to all broadcast media and can be applied to fixed measurement media such as DTV.

In addition, the present invention is to propose a "broadcast reception quality measurement and analysis system" including an interface that is easy to set the measurement target medium, and easy to compare and analyze the measurement results.

In addition, the present invention is to propose a "model of the broadcast reception quality measurement and analysis system" capable of real-time interlocking of the measurement system.

An apparatus for measuring broadcast reception quality for terrestrial broadcasting according to an aspect of the present invention includes a plurality of antennas for receiving broadcast signals of each of a plurality of terrestrial broadcast media, and a measurement mode setting value received through a user interface or a communication unit. The antenna selection unit for sequentially selecting the plurality of antennas, and transmits the broadcast signal received from the selected antenna to the reception quality measuring unit, and selects the type of the measuring instrument according to the measurement mode setting value, and through the selected measuring instrument, Providing a reception quality measuring unit for measuring a reception quality of the broadcast signal transmitted from the antenna selection unit, wherein the reception quality includes a reception field strength of the broadcast signal, and the measurement mode setting value to the antenna selection unit; Visually and statistically It includes an analysis unit for analyzing.

According to an aspect of the present invention, a method for measuring broadcast reception quality for terrestrial broadcasting includes receiving broadcast signals of a plurality of terrestrial broadcast media, and receiving broadcast signals of each of the plurality of terrestrial broadcast media according to a measurement mode setting value. Sequentially selecting and transmitting the selected broadcast signal to a reception quality measurement unit, selecting a type of a corresponding instrument according to the measurement mode setting value, and receiving quality of the selected broadcast signal through the selected measurement instrument; The reception quality includes a reception field strength of a corresponding broadcast signal, and visually and statistically, the information on the measured reception quality is measured. Analyzing.

The "broadcast reception quality measurement and analysis system" according to the present invention is applicable to all broadcast media in common, and is applicable to fixed measurement media such as DTV.

In addition, the "broadcast reception quality measurement and analysis system" according to the present invention can be measured in various ways such as fixed measurement, mobile measurement, portable measurement, and the like.

In addition, the "broadcast reception quality measurement and analysis system" according to the present invention is easy to set up the measurement target medium and includes an interface for easy comparison and analysis of the measurement results, so that it is easy even at the same time for the simultaneous measurement of the multi-media and the multi-channel. High utilization and visual feedback enable high result analysis.

In addition, a variety of applications are possible through the "model of the broadcast reception quality measurement and analysis system," which enables remote real-time interworking of the measurement system.

1 is a diagram illustrating a broadcast reception quality measurement and analysis system for terrestrial broadcasting according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a configuration example of a broadcast reception quality measuring apparatus provided in the measuring station of FIG. 1.
3 is a view for explaining a measurement mode setting according to an embodiment of the present invention.
4 is a view for explaining an example of a broadcast signal quality measurement method according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating another configuration example of a broadcast reception quality measuring apparatus provided in the measuring station of FIG. 1.
6 is a diagram illustrating an example of a screen configuration of a user interface according to an exemplary embodiment.
7 is a diagram illustrating an example of a measurement mode selection according to an embodiment of the present invention.
8 is a diagram illustrating an example of a measurement device selection according to an embodiment of the present disclosure.
9 is a diagram illustrating an example of a measurement result display according to an exemplary embodiment.
10 is a diagram illustrating another example of a measurement result display according to an exemplary embodiment.
11 is a diagram illustrating still another example of a measurement result display according to an exemplary embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a broadcast reception quality measurement and analysis system for terrestrial broadcasting according to an embodiment of the present invention.

Referring to FIG. 1, a broadcast reception quality measurement and analysis system for terrestrial broadcasting according to an embodiment of the present invention includes a monitoring station 150 and measurement stations 110 and 120 connected to the monitoring station through a network 101. , 130). In FIG. 1, the terminal 140 may be, for example, a portable electronic device such as a mobile communication terminal, a smartphone, a notebook computer, or a tablet PC. In FIG. 1, a map server may be a server that provides a map service such as Google. Map data provided from a map server may be displayed together with "information about measured reception quality" through an Open API based web browser. In FIG. 1, the propagation DB 160 means a means for storing the data measured by the measurement stations 110, 120, and 130 in a database.

The monitoring station 150 may be a server or a computer installed in a broadcasting station that broadcasts a broadcast signal. That is, the monitoring station 150 may be a server or computer for monitoring the data measured at the measurement stations 110, 120, 130.

Each of the measuring stations 110, 120, and 130 includes a vehicle and a broadcast reception quality measuring apparatus installed in the vehicle. That is, each of the measuring stations 110, 120, and 130 means a means for measuring and analyzing a reception quality of a broadcast signal in a mobile environment or a fixed environment. Hereinafter, the measurement station 110 is described by way of example for convenience of explanation, but other measurement stations 120 and 130 may also perform the same function as the measurement station 110.

The operating method of the broadcast reception quality measurement and analysis system for terrestrial broadcasting can be various embodiments. Hereinafter, examples of an operation method of a broadcast reception quality measurement and analysis system for terrestrial broadcasting will be described.

<Remote Example Real-Time Linkage Example 1>

Referring to FIG. 1, a broadcast reception quality measuring apparatus (not shown) included in the measurement station 110 transmits “information about measured reception quality” to the monitoring station 150 in real time, or at predetermined time intervals. Can transmit

Various setting values for the broadcast reception quality measurement may be set remotely by an operator operating the monitoring station 150 or may be set by an operator of the measurement station 110. In addition, the path setting and the position setting for measuring the broadcast reception quality may be received at the monitoring station 150, and the medium selection and channel selection for the measurement may be set by an operator of the measurement station 110.

"Information about the measured reception quality" may be automatically uploaded to the radio wave DB 160 or automatically backed up to the monitoring station 150. In addition, the operation of updating with the information about the recently measured reception quality may also be performed in the monitoring station 150 or the measurement station 110. The transmission of "information about the measured reception quality" may be transmitted via the terminal 140 or directly from the measurement station 110 to the monitoring station 150.

<Remote real-time linkage example 2>

In FIG. 1, a server provided in the monitoring station 150 may have software that can be shared through a network. In this case, the driving of the software, the driving of the reception quality measurement algorithm, the calculation for the analysis of the measurement value, and the like may be performed in a server provided in the monitoring station 150. That is, the terminal 140 or the measurement station 110 may transmit the measured raw data to a server provided in the monitoring station 150 and perform an analysis operation on the server. In this case, the measurement station 110 or the terminal 140 may be equipped with a Viewer program. The Viewer program may provide a browser function for accessing a server provided in the monitoring station 150 and displaying a measurement result. Accordingly, the Viewer program may provide a function of displaying map data and measurement results together.

<Example of real-time linkage between measuring stations>

The server provided in the monitoring station 150 may simultaneously manage information measured by the plurality of measurement stations 110, 120, and 130. In addition, the plurality of measurement stations 110, 120, and 130 may be connected to a server and share information measured by another measurement station.

<Sharing the measurement results on various terminals>

If the terminal 140 and the measurement station 110 are located at a remote location, the terminal 140 may access the measurement station 110 and the monitoring station 150 through a network such as Wi-Fi or WCDMA. Therefore, the measurement result of the reception quality can be shared through various terminals equipped with an Open API based web browser.

FIG. 2 is a diagram illustrating a configuration example of a broadcast reception quality measuring apparatus provided in the measuring station of FIG. 1.

Referring to FIG. 2, the broadcast reception quality measuring apparatus 200 includes a plurality of antennas 211, 213, 215, and 217, an antenna selection unit 220, a reception quality measurement unit 240, and an analysis unit 250. Include. In addition, the broadcast reception quality measuring apparatus 200 may further include a GPS module 230. Although not explicitly illustrated in FIG. 1, the broadcast reception quality measuring apparatus 200 may further include a controller including at least one processor and a memory for storing data. In this case, the at least one processor may be configured to perform a function of the reception quality measuring unit 240 or the analysis unit 250 or to control each component. In addition, the broadcast reception quality measuring apparatus 200 may further include a communication unit that performs data transmission and reception through a network. In addition, the broadcast reception quality measuring apparatus 200 may further include a display unit for displaying a specific screen.

Each of the plurality of antennas 211, 213, 215, and 217 receives a broadcast signal of each of the plurality of terrestrial broadcast media. The plurality of antennas 211, 213, 215, and 217 according to an embodiment may each include an omnidirectional DTV antenna 211 for receiving a digital TV broadcast signal, an omnidirectional DMB antenna 213 for receiving a DMB broadcast signal, and an FM signal. FM antenna 215 for receiving radio broadcast signals and AM antenna 217 for receiving AM radio broadcast signals. According to an exemplary embodiment, an antenna for receiving a broadcast signal of another broadcast medium may be further added.

Meanwhile, the digital TV broadcast signal corresponds to a fixed measurement medium. That is, digital TV broadcasts are mainly received and consumed by fixed devices. In the case of fixed measurement, it takes a lot of time to measure, which makes it difficult to establish and manage a broadcasting network. In the field strength measurement and analysis system, the movement measurement is based on the DTV field strength using the omni-directional receiving antenna installed in the vehicle, and the movement measurement results are measured by the compensation of the receiving antenna gain and the height correction. You can improve the accuracy of the results.

The antenna selection unit 220 sequentially selects the plurality of antennas according to the measurement mode setting value, and transmits the broadcast signal received from the selected antenna to the reception quality measurement unit 240. The "measurement mode setting value" may be input through a user interface or a communication unit. The "measurement mode setting value" may include a broadcast medium to be measured, a channel for each broadcast medium to be measured, a measurement timing, and the like. That is, the "measurement mode setting value" may include "switching timing of a broadcast medium and channel switching timing of a corresponding broadcast medium" as shown in FIG. 3.

The antenna selection unit 220 may include a switching element for selecting or switching an antenna according to "switching timing of a broadcast medium and channel switching timing of a corresponding broadcast medium". In this case, the antenna selection unit 220 may sequentially select the plurality of antennas 211, 213, 215, and 217 according to the "switching timing of the broadcasting medium and the channel switching timing of the broadcasting medium". Of course, when the "switching timing of the broadcasting medium and the channel switching timing of the broadcasting medium" is set in the order of "DTV broadcasting-FM radio broadcasting-AM radio broadcasting", the antenna selection unit 220 performs the DTV antenna 211-FM. The antenna may be selected in the order of the antenna 215 to the AM antenna 217.

The reception quality measurement unit 240 selects a type of a corresponding instrument according to a measurement mode setting value, and measures the reception quality of the broadcast signal transmitted to the antenna selection unit through the selected measurement instrument. In this case, a factor for measuring a reception quality includes a reception electric field strength of a corresponding broadcast signal. In addition, the measurement value for the reception quality measurement may further include a spectrum, a reception screen, a bit error rate (BER), a packet error rate (PER), a channel impulse response (CIR), and the like. Here, the electric field strength indicates the intensity of the electric wave when energy is received as energy per unit area, and the channel power measured by the spectrum analyzer may be converted into the electric field strength regardless of the medium. Therefore, the reception quality measuring unit 240 may be configured to include a spectrum analyzer.

On the other hand, the electric field strength can be obtained by adding a separate factor value from the channel power measured by the measuring instrument. At this time, the signal entering the instrument is an electric field for the radio signal propagated in the air, but the strength of the electric field input to the instrument may vary depending on which antenna and which cable the electric field receives. We need to compensate for this factor. On the other hand, the unit of electric field strength is dBuV / m, which is a relative dB value based on 0 dB when 1uV is induced to a 1m effective conductor. The electric field strength may be defined by Equation 1 below, and a factor for a reception environment may be compensated according to Equation 2.

[Equation 1]

[Equation 2]

The reception quality measuring unit 240 may control on / off timing of each of the plurality of measuring instruments according to the “switching timing of the broadcasting medium and the channel switching timing of the broadcasting medium”. The types of instruments include field strength meters (ESPI, FSH), channel analyzers, spectrum analyzers, screen analyzers, bit error rate calculators, and packet error analyzers.

The reception quality measuring unit 240 may include an RF attenuation circuit and a preamplification circuit. In this case, the reception quality measuring unit 240 divides the level of the received electric field strength of the currently measured broadcast signal into a strong electric field, a weak electric field, and a general electric field, and if the received electric field strength of the currently measured broadcast signal belongs to the strong electric field, When the attenuation circuit is activated and the received electric field strength of the currently measured broadcast signal belongs to the weak electric field, the preamplification circuit can be activated. An operation example of the classification of the received electric field strength and the reception quality measuring unit 240 will be described in detail with reference to FIG. 4. Meanwhile, the classification of the level of the received electric field strength may be applied to each channel of the corresponding broadcast medium.

The analyzer 250 provides a measurement mode setting value to the antenna selection unit, and visually and statistically provides information on the measured reception quality. Analyze At this time, through the display unit visually and statistically The analyzed results can be displayed.

The visual analysis may include "visual feedback of the measured moving path and the measured electric field strength" on the map, and the statistical analysis may include a graph of the change of the measured electric field strength and the change of the receiving antenna sensitivity. . An example of the above "visual feedback on the measured travel path and measured field strength" is as shown in FIGS. 9-11.

The GPS module 230 provides the analysis unit 250 with information about the current position of the measurement station 110. Therefore, the analyzer 250 may reflect the information on the current location on the map, the location for measuring the current reception quality, and the measurement moving path in the measurement result.

The display unit may display a user interface and receive various inputs from an operator. An example of the configuration of the user interface is as shown in FIGS. 6 to 8.

The communication unit performs various functions for implementing the "examples of operating methods of the broadcast reception quality measurement and analysis system for terrestrial broadcasting". For example, the communication unit may receive the measurement mode setting value from the broadcast station monitoring station 150 at a remote location through a network, and provide the received measurement mode setting value to the antenna selection unit 220 and the analysis unit 250. have. In addition, the communication unit may transmit the information on the measured reception quality to the broadcaster monitoring station 150. In addition, the communication unit may receive the measurement mode setting value from the user terminal 140. In addition, the communication unit may perform data transmission and reception for sharing software installed in the broadcaster monitoring station 150.

3 is a view for explaining a measurement mode setting according to an embodiment of the present invention.

3 shows an example of "switching timing of a broadcast medium and channel switching timing of a corresponding broadcast medium" for setting a measurement mode. Referring to FIG. 3, two DTV broadcast channels 301 and 305, three DMB broadcast channels 307, 311 and 315, two FM radio broadcast channels 317 and 319 and an AM based on a time axis t The timing is set in order of one broadcast channel 321.

According to the example shown in FIG. 3, the DTV antenna 211 receives a broadcast signal of channel 1 of the DTV broadcast in a time interval 301, and receives a broadcast signal of channel 2 of the DTV broadcast in a time interval 305. Receive. The frequency conversion time interval 303 of FIG. 3 is a time interval for frequency conversion from channel 1 of the DTV broadcast to channel 2 of the DTV broadcast. Therefore, when the tuner circuit or the band pass filter is connected to the DTV antenna 211, the tuner circuit or the band pass filter may be used to convert the frequency or the pass band in the time period 303.

Similarly, the tuner circuit or the bandpass filter connected to the DMB antenna 213 may convert the frequency band or the passband to the frequency corresponding to the corresponding channel in the frequency conversion time periods 309 and 313.

That is, in FIG. 3, the time intervals 301, 307, 317, and 321 correspond to the "timing timing of the broadcast medium", and the time sections 303, 309, and 313 correspond to the "channel switching timing of the broadcast medium". Corresponding.

In addition, in FIG. 3, the "switching of the broadcast medium to be measured" may be performed in a time interval indicated by "DTV setting", "DMB setting", "FM setting", and "AM setting".

4 is a view for explaining an example of a broadcast signal quality measurement method according to an embodiment of the present invention.

4 illustrates an operation example when the RF quality reduction circuit and the preamplification circuit are included in the reception quality measuring unit 240.

That is, when all received signals of the DMB channels 1, 2, and 3 measured before the time interval 410 are all measured with a strong electric field, the reception quality measuring unit 240 may activate the RF attenuation circuit in the time interval 410. have. Depending on the activation of the RF attenuation circuit, the signal level of the received signal via the RF attenuation circuit may be lowered. In this case, the analyzer 250 may perform the analysis considering that the levels of the signals measured in the time interval 410 are values that have passed through the RF attenuation circuit. In addition, the reception quality measuring unit 240 may determine only the received signal of the channel 2 as the weak electric field in the time interval 420, and activate the preamplification circuit for amplifying the received signal of the channel 2. This is to measure the quality of the received signal after artificially raising the level of the signal since the measurement result may be inaccurate when the level of the signal is too weak. In addition, the reception quality measurement unit 240 may perform a measurement after dividing the received signal of the channel 3 by a general electric field in the time interval 430. Here, the classification into a general electric field is to measure the received electric field strength with both the RF attenuation circuit and the preamplifier circuit deactivated. That is, activation and deactivation of each of the RF attenuation circuit and the preamplification circuit may be dynamically set according to channels.

The criteria of the strong electric field, the weak electric field, and the general electric field may be preset or set by a user. In an extreme example, the strong electric field may be set to be greater than -60 dBm and the weak electric field is less than or equal to -90 dBm. That is, the level of the received electric field strength may be applied to each channel of the corresponding broadcast medium.

FIG. 5 is a diagram illustrating another configuration example of a broadcast reception quality measuring apparatus provided in the measuring station of FIG. 1.

5 illustrates that the broadcast reception quality measuring apparatus may be implemented by hardware, a combination of hardware and software, and software. That is, in the present specification, 'module' and 'engine' generally mean a computer-related entity, and may mean, for example, hardware, a combination of hardware and software, and software.

Referring to FIG. 5, the reception antenna 510 performs the same function as the plurality of reception antennas 211, 213, 215, and 217.

The spectrum analyzer 520 is a module for analyzing the frequency spectrum of the received signal and displaying the result.

The GPS and peripheral measuring instruments 530 represent types of measuring instruments and may include a GPS module, an electric field strength measuring instrument, a BER measuring instrument, and the like.

In FIG. 5, 540 corresponds to the reception quality measurement unit 240 and the analysis unit 250 of FIG. 2.

The communication module 541 serves as a data link layer and a physical layer for communication between the field strength measurement and analysis system and the measurement instrument, and supports interfaces such as RS232, Ethernet, and GPIB.

The control module 542 implements instructions for controlling the instrument for each type of measurement instrument. Change the instrument settings such as frequency and bandwidth for each broadcast medium or request the instrument to measure the current settings. It is possible to control various instruments that can measure fixed, mobile and portable.

The measurement engine 543 controls other modules to directly perform or execute communication, control, measurement value collection, graph display, electronic map display, measurement result storage, etc. with the measuring instrument according to the command of the measurer. The measurement engine 543 supports DTV, DMB, FM, and AM measurement, and can simultaneously measure the number of channels set by the operator. Also, refer to and change the environmental management contents.

The environmental management module 546 includes broadcasting, regional, channel, frequency management, transmission / reception station radio station management, instrument set value management, electronic map set value management, and legend management for classifying measurement results shown on a map for each broadcasting medium. Manage various environmental values used for analysis. The contents of environmental management are used by the measurement engine and analysis engine, and the measurement can be changed in the form of downloading directly from the local or remotely accessing the radio DB.

The map engine 549 controls the maps of Samsung map, Google map, etc. according to the command of the measurement engine 543 or the analysis engine 548 to show the measurement results, the location of the transmission / reception center, or the transmission / reception center. This function calculates terrain elevation for distance and LOS analysis, and performs functions such as accumulation transformation and position movement.

The measurement result module 545 stores the measurement results by media and channel, and stores the spectrum images by location along with the measured values. The measurement result is managed in the form of a file or a local DB, it is also possible to upload to the propagation DB (160) that is integrated with the intranet to manage the measurement results from a remote location.

The correction module 547 corrects the measured value in consideration of the reception antenna characteristics, the measurement height, and the like.

The analysis engine 548 searches for measurement results by media, channel, and date according to a user's command, and passes the searched data to a map engine so that the searched data can be viewed in a sheet view form or shown on a map. In addition, it is possible to perform statistical processing on measurement results that are repeatedly measured at the same point due to distance-by-distance correction, location value correction for areas where GPS is not received, such as tunnels, and vehicle pause during movement measurement.

The propagation DB synchronization module 544 receives the measurement results from the analysis engine 548 by media, channel, and date, and uploads them to the remote propagation DB 160 through the network 501 or manages the environment of the local DB. The information of the module 546 is synchronized with the environment information of the propagation DB 160.

6 is a diagram illustrating an example of a screen configuration of a user interface according to an exemplary embodiment.

Referring to FIG. 6, the user interface may provide a first screen A for selecting “broadcast reception quality measurement” or “measurement result analysis”. By selecting "Measure", the operator can select the broadcasting medium and the type of measurement result to be measured.

In addition, the user interface may provide a second screen B for selecting a broadcast medium. B may be provided if the operator has selected "Measure" in A. The operator can select a measurement target broadcasting medium such as DTV, DMB, or Radio broadcasting through B.

The user interface may provide a third screen C for selecting a measurement mode including any one of electric field strength, movement measurement, channel analysis, handoff, and portable measurement.

The user interface may provide a fourth screen D for selecting whether to start reception quality measurement according to the selected broadcast medium and the selected measurement mode. According to an exemplary embodiment, when the type of the broadcasting medium and the measurement result to be measured is set as a default, D may be immediately displayed when the operator selects "Measure" in A. FIG.

In FIG. 6, E represents an example of the measurement screen showing the result of the electric field strength measurement in real time.

7 is a diagram illustrating an example of a measurement mode selection according to an embodiment of the present invention.

Referring to FIG. 7, the measurement mode selection may be selected through “media selection and measurement mode selection 710” which may be provided via a user interface. The use of each measurement mode is as illustrated in "Application" in FIG.

8 is a diagram illustrating an example of a measurement device selection according to an embodiment of the present disclosure.

Referring to FIG. 8, the selection of the measurement device may be selected through “media selection and measurement mode selection 810” which may be provided through a user interface. An example of the type of instrument that may be selected according to the results selected through "media selection and measurement mode selection 810" is illustrated in "device configuration" of FIG.

9 is a diagram illustrating an example of a measurement result display according to an exemplary embodiment.

As shown in FIG. 9, it is possible to simultaneously measure and display electric field strengths and spectral images of three DMB channels. In the example shown in FIG. 9, the upper field consists of the current area, the measurement facility name, the medium name, the channel, the frequency, the channel power, the field strength, the spectral images 910, 920, and 930, and the feature notes. The lower graph 940 is a graph showing a comparison of electric field strength change over time of three channels simultaneously measured.

10 is a diagram illustrating another example of a measurement result display according to an exemplary embodiment.

10 to 1010 are examples showing the electric field intensity distribution in the current position and the passing measurement path in the movement measurement process on the electronic map. The electronic map may be executed at the same time as the screen example of FIG. 9 so that the current position of the measurer and the electric field intensity distribution of each position may be easily checked during the measurement.

11 is a diagram illustrating still another example of a measurement result display according to an exemplary embodiment.

In the example shown in Fig. 11, the DMB field strength movement measurement results are shown on a map. Different colors may be displayed according to the range of electric field strength values, and blue or green color may be applied as the electric field strength is good, and red color may be applied as the electric field strength is poor.

In FIG. 11, the concentric circles displayed on the map may be used to analyze how the electric field strength is distributed for each distance around the transmission / reception center. In FIG. 11, the graph on the left side shows elevation data according to a straight line distance from a designated location to a selected transmission / reception station. Elevation data can be used to analyze whether there are topographical obstacles between the transmitting and receiving points.

Methods according to an embodiment of the present invention can be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

Claims (13)

A plurality of antennas for receiving broadcast signals of each of the plurality of terrestrial broadcast media;
An antenna selection unit configured to sequentially select the plurality of antennas according to a measurement mode setting value received through a user interface or a communication unit, and to transmit a broadcast signal received from the selected antenna to a reception quality measurement unit;
Select a type of the measuring instrument according to the measurement mode setting value, and measure, through the selected measuring instrument, a reception quality of the broadcast signal transmitted from the antenna selection unit, wherein the reception quality includes a reception field strength of the broadcast signal. A reception quality measuring unit; And
The measurement mode setting value is provided to the antenna selection unit, and information about the measured reception quality is visually and statistically Including an analysis unit to analyze,
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 1,
The plurality of antennas,
A omnidirectional DTV antenna for receiving a digital TV broadcast signal, an omnidirectional DMB antenna for receiving a DMB broadcast signal, an FM antenna for receiving an FM radio broadcast signal and an AM antenna for receiving an AM radio broadcast signal,
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 1,
The measurement mode setting value,
A switching timing of the broadcasting medium and a channel switching timing of the broadcasting medium,
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 3,
The antenna selection unit sequentially selects the plurality of antennas according to the switching timing of the broadcasting medium and the channel switching timing of the broadcasting medium.
The reception quality measuring unit controls the on-off timing of each of the plurality of measuring instruments in accordance with the switching timing of the broadcast medium and the channel switching timing of the broadcast medium,
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 1,
Further comprising a display unit for displaying the user interface,
The user interface,
a) first screen for selecting "broadcast reception quality measurement" or "analyze measurement result";
b) a second screen for selection of a broadcast medium,
c) a third screen for selection of measurement modes including any of field strength, movement measurement, channel analysis, handoff, portable measurement,
d) a fourth screen for selecting whether to start reception quality measurement according to the selected broadcast medium and the selected measurement mode;
Which provides one of the screens,
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 5,
The analysis unit visually and statistically through the display unit Display the analyzed results,
The visual analysis includes visual feedback on the measured travel path and measured field strength on the map,
The statistical analysis includes a graph of a change in measured field strength and a change in receive antenna sensitivity.
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 1,
The reception quality measuring unit,
The level of the received electric field strength of the currently measured broadcast signal is divided into a strong electric field, a weak electric field, and a general electric field.If the received electric field strength of the currently measured broadcast signal belongs to the strong electric field, the RF attenuating circuit is activated, and the currently measured broadcast is performed. When the received field strength of the signal belongs to the weak field, the preamplifier circuit is activated.
The division of the level of the received electric field strength is applied to each channel of the corresponding broadcast medium,
Broadcast reception quality measuring apparatus for terrestrial broadcasting. The method of claim 1,
The communication unit,
a) receiving the measurement mode setting from a remote broadcast station monitoring station via a network;
b) transmitting the information on the measured reception quality to the broadcasting station monitoring station,
c) receiving the measurement mode setting value from a user terminal, and
d) sharing the software installed in the broadcasting station monitoring station;
Broadcast reception quality measuring apparatus for terrestrial broadcasting. Receiving a broadcast signal of each of the plurality of terrestrial broadcast media;
Sequentially selecting a broadcast signal of each of the plurality of terrestrial broadcast media according to a measurement mode setting value, and transmitting the selected broadcast signal to a reception quality measurement unit;
Selecting a type of a corresponding instrument according to the measurement mode setting value;
Measuring, by the selected meter, a reception quality of the selected broadcast signal, wherein the reception quality includes a reception field strength of the broadcast signal; And
Information about the measured reception quality is visually and statistically Including analyzing,
Method of measuring broadcast reception quality for terrestrial broadcasting. 10. The method of claim 9,
The plurality of terrestrial broadcast media,
Including digital TV broadcast, DMB broadcast, FM radio broadcast and AM radio broadcast,
Method of measuring broadcast reception quality for terrestrial broadcasting. 10. The method of claim 9,
The measurement mode setting value,
A switching timing of the broadcasting medium and a channel switching timing of the broadcasting medium,
Method of measuring broadcast reception quality for terrestrial broadcasting. 10. The method of claim 9,
Measuring the reception quality of the selected broadcast signal,
Dividing the level of the received electric field strength of the currently measured broadcast signal into a strong electric field, a weak electric field, and a general electric field; And
Activating the attenuation circuit if the received electric field strength of the currently measured broadcast signal belongs to the strong electric field, and activating the preamplification circuit if the received electric field strength of the currently measured broadcast signal belongs to the weak electric field.
Method of measuring broadcast reception quality for terrestrial broadcasting. The method of claim 12,
The division of the level of the received electric field strength is applied to each channel of the corresponding broadcast medium,
Method of measuring broadcast reception quality for terrestrial broadcasting.

Images