JP2002056150A - Questionnaire collecting method and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a questionnaire collecting method by which an answerer can easily answer by using a portable telephone terminal, high ratio of respondents is expected, and totalization, etc., is facilitated. SOLUTION: This questionnaire collecting method has a procedure S1 for broadcasting questionnaire information including address data on a questionnaire distribution destination where a questionnaire form is distributed with a broadcasting radio wave, a procedure S2 for receiving the broadcast radio wave by a portable telephone terminal, a procedure S4 for requesting questionnaire form data from the questionnaire distribution destination by the portable telephone terminal, a procedure S5 for sending the questionnaire form data to the portable telephone terminal at a request, a procedure S8 for inputting answer data to the questionnaire form and sending them to a questionnaire collecting system, a procedure S9 for storing the answer data in a database, and a procedure S10 for totalizing the answer data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a questionnaire collection method and a questionnaire collection system.

[0002]

2. Description of the Related Art Conventionally, questionnaire collection has been carried out, for example, by asking questions to the respondents on the street, listening to the answers, summing up the answers, posting an advertisement in a magazine, etc., and sending the answer of the questionnaire by mail or the like. Is generally used.

[0003]

However, the method of conducting a questionnaire on a street or the like as described above has a problem that labor costs for listening to the questionnaire increase. In addition, the method using a magazine or the like has a problem that the response rate must be low because the respondent needs to perform mailing or the like.

[0004] Further, any of the above methods has a problem that the input operation to a computer or the like for compiling the answer results is complicated.

Accordingly, the present invention provides a questionnaire collection method and a system thereof, in which a respondent can easily answer using a mobile phone terminal, and therefore a high response rate can be expected, and further, tabulation and the like can be easily performed. That is the task.

[0006]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and the questionnaire collecting method according to the first aspect of the present invention is directed to a questionnaire distribution destination to which questionnaire sheets are distributed. A broadcasting procedure for broadcasting questionnaire information including address data by broadcast radio waves, a questionnaire information receiving procedure for receiving the broadcast radio waves by a broadcast radio wave receiving section of the mobile phone terminal, and a questionnaire distribution by the transmitting / receiving section of the mobile phone terminal. A questionnaire sheet requesting procedure for requesting questionnaire sheet data first, a questionnaire sheet transmitting procedure for sending questionnaire sheet data to the mobile phone terminal in response to the request, and a response data for the question items of the transmitted questionnaire sheet, And input the input response data to the questionnaire collection system. A response data transmission procedure signal to, and a storage procedure for storing in a database of questionnaire recovery system receives the reply data transmitted, characterized in that it comprises a summary procedure for aggregating the stored response data.

The questionnaire collecting method according to the second aspect of the present invention provides a method of broadcasting questionnaire information including address data of a questionnaire distribution destination to which a questionnaire form is distributed by a broadcast wave, and a method of broadcasting the broadcast wave. When the mobile phone terminal received by the radio wave receiving unit transmits a questionnaire sheet request signal to the questionnaire distribution destination, a questionnaire sheet transmission procedure for sending questionnaire sheet data to the mobile phone terminal, and a response to a question item of the questionnaire sheet When the input answer data is transmitted from the mobile phone, the method includes a storing procedure for receiving the answer data and storing the answer data in the database of the questionnaire collection system, and a totaling procedure for totalizing the stored answer data. It is characterized by.

In the questionnaire collection method according to the present invention having the above configuration, a questionnaire sheet is requested from the questionnaire distribution destination based on the address information of the questionnaire information broadcasted by the broadcasting procedure (a questionnaire sheet request signal is transmitted). ) And the questionnaire form transmission procedure,
The questionnaire will be transmitted to the mobile phone terminal. When answer data as an answer to the question item of the questionnaire sheet transmitted in this way is input by the respondent and transmitted to the questionnaire collection system, the answer data is stored in the database in the storage procedure. Become. For this reason, the respondents to the questionnaire can answer the questionnaire simply by using the mobile phone terminal, and the data thus answered is stored in the database at any time, so that the data can be used for tally work. The work of inputting answer data becomes unnecessary.

Further, the questionnaire collecting method according to claim 1 or 2 of the present application has a questionnaire result broadcasting procedure for broadcasting the results totalized by the totaling procedure by a broadcast radio wave. Is preferred.

[0010] By adopting this configuration, the questionnaire result broadcasting means receives the questionnaire result on the portable telephone terminal by the broadcast radio wave, and the respondent can know the result. This has the advantage that the response rate can be improved.

The questionnaire collection system according to the invention described in claim 4 of the present application can be received by a transmission / reception unit connected to the base station and exchanging data with the mobile phone terminal, and a broadcast radio wave reception unit of the mobile phone terminal. A broadcast radio wave transmitting unit for transmitting a broadcast radio wave is provided, a homepage accessible by a mobile phone terminal and capable of distributing a questionnaire form is established, and the broadcast radio wave transmitting unit is provided with questionnaire information including address data of the homepage. And a database for storing the answer data when the answer data for the answer item of the questionnaire is transmitted from the mobile phone terminal,
Processing means for totalizing the answer data stored in the database.

In the questionnaire collection system according to the present invention having the above structure, the user (respondent) of the portable telephone terminal can use the questionnaire collection system based on the address information of the questionnaire information broadcasted from the broadcast radio wave transmitting section. When the user accesses the homepage to be opened and requests a questionnaire sheet (transmits a questionnaire request signal), the questionnaire sheet is transmitted to the mobile phone terminal. When the respondent inputs and transmits answer data as an answer to the question item on the questionnaire, the answer data is received and the answer data is stored in the database. Therefore, similarly to the questionnaire collection method according to the present invention described above, the questionnaire respondent can answer the questionnaire only by using the mobile phone terminal, and the data thus answered is: Since it is stored in the database at any time, it is not necessary to input answer data again.

[0013] In the questionnaire collection system according to the present invention, the broadcast radio wave transmitting section broadcasts the results totalized by the processing means by broadcast radio waves. Is preferred.

By adopting this configuration, the same advantages as those of the third aspect are obtained. In other words, the broadcast radio wave transmitting unit transmits the questionnaire results by broadcast radio waves, and by receiving this result to the mobile phone terminal, the respondent can know the questionnaire result. This has the advantage that the rate can be improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, a portable telephone terminal owned by a user (respondent) used in a questionnaire collection system of the present embodiment will be described. The configuration will be described. FIG. 1 is a schematic explanatory diagram of the entire configuration of the system according to the present embodiment. FIG. 2 is an overall schematic diagram for explaining the database structure of the system. FIG. 3 is a flowchart showing a method for distributing and collecting a questionnaire using the same system.

As shown in FIG. 1, a portable telephone terminal 100 used in the present embodiment includes a television receiver unit (broadcast wave receiving unit) 150 capable of receiving a broadcast wave of a television or the like.
Transmitter / receiver 1 wirelessly connected to a base station (not shown)
10 and a mobile phone central control unit 120.

The television receiver section 150 has an interface (the television receiver side output interface section 140).
And the mobile phone-side input interface unit 130) to transmit data to the mobile phone central control unit 120.

The portable telephone terminal 100 is composed of a numeric keypad or the like, and is capable of inputting various processing data to the portable telephone central control unit 120 under the control of the portable telephone central control unit 120. It has a mobile phone display section 160 capable of displaying. As will be described later in detail, the mobile phone input section 170 has a function as an answer data input section for inputting answer data. The mobile phone display section 160 has a function as a broadcast data display section for displaying data received by the television receiver section 150 and a function as a questionnaire sheet display section for displaying a questionnaire sheet received by the transmission / reception section 110. Note that the mobile phone terminal 100 can be connected to the Internet 400 via an IP (Internet Protocol) not shown.

Next, the questionnaire collection system of the present embodiment is connected to a base station (not shown),
Router 210 for transmitting and receiving data to and from the television receiver 1 of the mobile phone terminal 100
A broadcast radio wave transmitting unit 340 for transmitting a broadcast radio wave receivable by the wireless communication device 50 is provided. This questionnaire collection system is a communication system connected as a whole via the router 210 and the LAN 300,
And a broadcasting system.

The communication system of the questionnaire collection system includes a card unit 220 as an interface unit connected to the LAN 300, a communication center server 230 for displaying questionnaire sheets and the like on the Internet (homepage) so as to be browsed, and a mobile phone terminal. The database 240 stores answer data and the like included in the answer sheet data received from the server 100, and an operation terminal unit 250 that inputs data to the database 240 and the communication center server 230. The communication center server 230 is connected to the Internet 400 via an IP (not shown).

The communication center server 230 shown in FIG.
As shown in the figure, a database 260 in which questionnaire information transmitted (distributed) to the mobile phone terminal 100 is stored.
have. This questionnaire sheet information is stored in the questionnaire data master 231 of the database 260. The questionnaire sheet information includes a questionnaire identification code for identifying each questionnaire such as each program. Based on the questionnaire identification code, the data structure of the database 260 is provided in a hierarchical manner.

The questionnaire information stored in the database 260 includes text data (text data) of the question corresponding to the question in each questionnaire, a question identification code assigned to each question, and The text data (text data) of the option as an answer to each question item and the option number corresponding to the option are included.

The questionnaire sheet information stored in the database 260 also has a response identification code input field for a response identification code (respondent identification code) specified by the respondent's own information such as the name of the respondent. The answer identification code can be the answerer's name or the like, or can use the telephone number of the mobile phone terminal 100. Here, the telephone number of the mobile phone terminal 100 is a concept including not only a ten-digit telephone number itself but also a subscriber ID number assigned to each mobile phone terminal. Also, the input of this answer identification code is
It is possible to provide an input by the operator (respondent) using the input unit 170 of the mobile phone terminal 100. For example, a telephone number automatically transmitted when transmitted by the mobile phone terminal 100 is used. Thus, it is also possible to provide such that the telephone number is automatically entered in the respondent identification code input box.

The questionnaire sheet information stored in the questionnaire data master 231 is also provided with a personal attribute input field in which a personal attribute of a respondent can be input. This personal attribute means gender, age or age, occupation, prefecture where you live, etc., and these personal attributes are stored with options so that the respondent can select and enter it in the input field. ing.

The questionnaire sheet information transmitted (distributed) to the portable telephone terminal 100 as described above is provided without being stored in the communication center server 230. For example, the questionnaire sheet is distributed in the communication server 230. It is also possible to manage only the address of the homepage of each program to be performed. In this case, for example,
It is also possible to store the questionnaire sheet information on the homepage of each program, and to send the questionnaire sheet information to the mobile phone terminal 100 from the homepage of this program.

Further, the database 240 of the communication system is provided with a questionnaire type master 241 for managing a plurality of questionnaires. The questionnaire type master 241 stores a questionnaire identification code for identifying each questionnaire, the name of the questionnaire company, the type of broadcast media for which the questionnaire was recruited (TV or radio), and broadcast Stores various types of questionnaire information such as station name, program name, broadcast date, address data of the homepage accessed to take the questionnaire form data into the mobile phone terminal, and questionnaire execution time (questionnaire start time and questionnaire end time). It is also possible to keep.

The database 24 of the communication system
In 0, the response information returned (transmitted) from the mobile phone terminal 100 is stored. This answer information is stored in the answer data master 242 of the database 240 (see FIG. 2), and the answer information is answered for each questionnaire identification code for identifying the questionnaire that has been answered, and for each question item identification code. In addition to the option number (response data), a response identification code (respondent identification code) such as the telephone number of the mobile phone terminal 100 of the respondent and a personal attribute can be included. The response information may also include the date and time when the response information was transmitted or received.

Further, in the database 240 of the communication center server 230, a totaling result obtained by totaling the answer information is stored in a totaling data master 243 (see FIG. 2). The results of the aggregation are classified and stored for each questionnaire identification code, and the results of the aggregation are based on the number of answers of the option numbers answered for each question item in the specific questionnaire (the number of options is the total number of answers). To the selected percentage).

The operation terminal unit 250 includes an input unit including a keyboard, a mouse, a numeric keypad, and the like, and a display unit for displaying characters, images, and the like input by the input unit. There is also provided an arithmetic processing unit having a function as a processing means for totalizing the answer data stored in the database 240 (all are not shown). That is, the answer information stored in the database 240 (answer data master 242) is taken into the arithmetic processing unit of the operation terminal unit 250 as a processing means, and the arithmetic processing unit sets an option number for each question item identification code. By calculating the selected ratio with respect to all of the answers, the answer data is totaled. The total of the questionnaire is provided so that the total is calculated for each questionnaire based on the questionnaire identification code. Specifically, the answer information of the specific questionnaire identification code stored in the answer data master 242 is provided. Is input to the arithmetic processing unit of the operation terminal unit 250, and a specific questionnaire identification code is aggregated. It should be noted that the tallying may be provided so as to be performed at predetermined intervals, for example, every hour.

On the other hand, the broadcasting system has a card section 310 as an interface section connected to the LAN 300.
A video information creation transmission unit 330 for creating video information to be broadcast; and a broadcast radio wave transmission unit 340 for broadcasting the video information and the like created by the video information creation transmission unit 330 to the mobile phone terminal 100. And

The video information creation and transmission section 330 is connected to the database 240 (total data master 24) of the communication system.
The questionnaire answer aggregation results and the like stored in 3) are sent to LAN
300, card section 310 and server information input / output section 320
Is provided so as to be able to be obtained via The video information creation and transmission unit 330 has a function of creating a video to be broadcast to the mobile phone terminal 100 after acquiring the questionnaire response aggregation result and the like, and transmitting the created video to the broadcast radio wave transmission unit 340.

Next, a questionnaire collection method using the questionnaire collection system configured as described above will be described below. First, a broadcast radio wave including questionnaire information is transmitted to the mobile phone terminal 100 by the broadcast radio wave transmitting unit 340. The questionnaire information includes the address information of the homepage to which the questionnaire is distributed, and is broadcast in an advertisement of the questionnaire.
(Broadcast procedure, step S1 in FIG. 3). Here, among the information to be broadcast, the questionnaire information (for example, the address data stored in the questionnaire identification master 241).
From the communication system side (database) to LAN3
It is also possible to provide such that the broadcast system system side (the video information creation and transmission unit 330 of the broadcast system system) can be obtained via 00.

In the portable telephone terminal 100, the broadcast wave emitted from the broadcast wave transmitter 340 is received by the television receiver 150 (questionnaire information receiving procedure,
Step S2 in FIG. 3).

When the broadcast wave is received, the video information including the questionnaire information is displayed on the mobile phone display section 160 of the mobile phone terminal 100 (step S in FIG. 3).
3). Specifically, when the television receiver section 150 receives a broadcast wave, the received video data (questionnaire information including address data) is transmitted to an interface (the television receiver side output interface section 140 and the mobile phone side input interface section). 130) to the mobile phone central control unit 120. Then, the mobile phone central control unit 120 includes a mobile phone display unit (broadcast data display unit).
At 160, the video data including the questionnaire information is displayed.

Then, the owner (respondent) of the mobile phone terminal 100 who has seen the questionnaire information displayed on the mobile phone display unit 160, based on the address displayed on the mobile phone display unit 160, To access the questionnaire collection system and send a questionnaire request signal requesting a questionnaire (questionnaire request procedure,
Step S4 in FIG. 3). This access method includes a method in which a respondent inputs an address displayed on the mobile phone display unit 160 using the mobile phone input unit 170 and then accesses the address. At least, a method of accessing when the respondent specifies it, or the like can be adopted.

Then, the communication center server 230 that has received the questionnaire request signal from the mobile phone terminal 100
Is the database 260 (questionnaire data master 23)
From 1), the questionnaire sheet information corresponding to the input address is transmitted from the router unit 210 to the mobile phone terminal 100 via the IP network 500 and the Internet 400 (questionnaire sheet transmission procedure, step S5 in FIG. 3). If the questionnaire is provided on another server, such as the homepage of a questionnaire survey company, the questionnaire transmitting means is used to send the questionnaire to the homepage where the communication center server 230 distributes the questionnaire. For example, a method of instructing transmission of a questionnaire sheet may be adopted so that the questionnaire sheet is transmitted from another server.

The questionnaire sheet information transmitted as described above is received by the transmitting / receiving section 110 of the mobile phone terminal 100, and the questionnaire sheet is displayed on the mobile phone display section (questionnaire sheet display section) 160 (FIG. 3 step S6).

The respondent inputs (answers) the questionnaire items (question items) on the displayed questionnaire form from the mobile phone input unit (answer data input unit) 170 to create answer data. (Step S in FIG. 3)
7). The created answer data is transmitted to the questionnaire collection system in the same manner as the questionnaire sheet request procedure (answer data transmission procedure, step S8 in FIG. 3).

The response data transmitted from the mobile phone terminal 100 is received by the communication center server 230 via the router 210, and is transmitted to the database 240 (the response data master 24) of the communication system of the questionnaire collection system.
2) (storage procedure, step S9 in FIG. 3).
Here, the storage of the answer data is provided so as to be classified and stored for each questionnaire identification code in the database 240 (answer data master 242).

The answer data stored in the database 240 (answer data master 242) in the storing procedure is counted by the arithmetic processing unit (processing means) of the operation terminal unit 250 (counting procedure, step S10 in FIG. 3). In particular,
The arithmetic processing unit first retrieves answer information for each questionnaire (only retrieves answer information of a specific questionnaire identification code stored in the answer data master 242). Then, based on the plurality of pieces of answer information, the number of answers of each option number as answer data is totaled (totaled) for each question item identification code, and the option number for all the answers of the questionnaire is selected. The percentage of the number of answers is calculated and the calculated result is calculated by the total data master 24.
3 is stored in association with the questionnaire identification code.

After the counting result calculated by the arithmetic processing unit is stored in the counting data master 243 of the database 240, the data stored in the counting data master 243 is obtained from the broadcasting system side via the LAN 300. It becomes possible. Specifically, aggregate data master 2
The data of the tally result stored in 43 is the LAN 30
0, the card information 310, and the video information creation / transmission unit 330 via the server information input / output unit 320. The video information creation and transmission unit 330 creates the aggregation result of the aggregated answer data of the questionnaire as video information together with background information for broadcasting, and the like.
(Questionnaire result broadcasting procedure, step S11 in FIG. 3).

When the broadcast radio wave is received by the television receiver unit 150 of the mobile phone terminal 100, the mobile phone terminal 100
, The data of the received totaling result is displayed on the mobile phone display unit (broadcast data display unit) 160 in the same manner as the reception of the above-mentioned questionnaire information.

As described above, in the questionnaire collection method according to the present embodiment, the questionnaire information is received by the mobile phone terminal 100 by broadcasting, and the mobile phone terminal 100 accesses the questionnaire collection system and requests the questionnaire form. Then, the questionnaire is transmitted to the mobile phone terminal 100. When answer data as an answer to the question item on the questionnaire is input by the respondent and transmitted to the collection system, the answer data is stored in a predetermined database (database 2).
40). For this reason, the respondents to the questionnaire can easily answer the questionnaire only by using the mobile phone terminal 100, and since the answer data is stored in the database, the answer data is collected by the questionnaire collection system. The work of re-inputting becomes unnecessary.

Further, if the answer to the questionnaire is input by the number corresponding to the option as in the above-described embodiment, the input of the respondent becomes easy, and the answer rate can be improved. .

Also, as in the above-described embodiment, since the configuration is such that the result of counting the response data is broadcast, the respondent of the questionnaire receives the result of the questionnaire answered by the user on the portable telephone terminal 100. Because you can know, you can know what you and others are saying to the questionnaire. For this reason, there is an advantage that it is possible to increase the willingness of the respondent to answer and improve the response rate of the questionnaire.

After receiving the broadcasted address data, the operator (respondent) inputs the desired address by using the mobile phone input section 170 while looking at the address displayed on the mobile phone display section 160. In addition to the method of accessing the address, the address displayed on the mobile phone display 170 is automatically or automatically depressed by pressing a predetermined button on the numeric keypad to save the trouble of inputting by the operator. The mobile phone terminal may be configured to transfer the data to the address storage unit on the 100 side. In this way, by configuring to transfer the address, it is possible to easily access the address and to prevent erroneous input.

Further, in the above embodiment, a questionnaire identification code is assigned to each of a plurality of questionnaires, and based on the questionnaire identification code,
Although management of questionnaire sheets (management of distribution) and management of questionnaire response data were performed, the present invention is not limited to this. However, when a plurality of questionnaires are collectively managed, it is preferable to provide such that each questionnaire can be identified by a questionnaire identification code as in the above embodiment. Furthermore, as in the above embodiment,
It is preferable that the answer data of the questionnaire be classified and stored on the basis of the questionnaire identification code, thereby providing an advantage that the work efficiency can be improved.

In the above embodiment, the database 260 for storing the questionnaire sent to the mobile phone terminal 100 and the database 240 for storing the answer data sent from the mobile phone terminal 100 are separated from each other. Although the present invention has been described, the present invention is not limited to this, and it is also possible to store each of the above data in one database. This is possible.

Furthermore, in the above-described embodiment, an example in which the operation terminal unit 250 for performing the tallying process is separately provided has been described as an example. However, the present invention is not limited to this. The provision of the central processing unit 230 so as to perform the above-described aggregation processing is also a matter that can be appropriately changed in design.

[0050]

Since the present invention has the above-described configuration, the respondent to the questionnaire can easily and easily answer the questionnaire only by using the mobile phone terminal.
This has the effect of improving the questionnaire collection rate. In addition, since the answer data transmitted from the mobile phone terminal is stored in the database, the answering data stored in the database can be used to easily perform the counting operation, and the answer data can be re-input as before. Work is not required, and work speed can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of the overall configuration of a system according to an embodiment of the present invention.

FIG. 2 is an overall schematic explanatory diagram for explaining a database structure of the system according to the embodiment;

FIG. 3 is a flowchart of a questionnaire distribution and collection method according to the embodiment.

[Explanation of symbols]

 Reference Signs List 100 mobile phone terminal 110 transmitting / receiving section 160 mobile phone display section 170 mobile phone input section 230 communication center server 340 broadcast radio wave transmitting section

Claims (5)

[Claims] 1. A broadcasting procedure for broadcasting questionnaire information including address data of a questionnaire distribution destination to which a questionnaire sheet is distributed by a broadcast wave, and receiving a questionnaire information for receiving the broadcast wave by a broadcast wave receiving unit of a mobile phone terminal. A questionnaire sheet requesting procedure for requesting questionnaire sheet data to the questionnaire distribution destination by the transmitting / receiving unit of the mobile phone terminal, a questionnaire sheet sending procedure for sending questionnaire sheet data to the mobile phone terminal in response to the request, An answer data for the question item of the completed questionnaire sheet is input by operating the mobile phone operation unit, an answer data transmitting procedure for transmitting the input answer data to the questionnaire collection system, and receiving the transmitted answer data. The storage procedure to be stored in the database of the questionnaire collection system and the storage A questionnaire collection method, comprising: a counting procedure for counting the answer data obtained. 2. A broadcasting procedure for broadcasting questionnaire information including address data of a questionnaire distribution destination to which a questionnaire sheet is distributed by a broadcast radio wave, and a mobile phone terminal receiving the broadcast radio wave by a broadcast radio wave receiving unit transmits the questionnaire information to the questionnaire distribution destination. When a questionnaire sheet request signal is transmitted, a questionnaire sheet transmission procedure for transmitting questionnaire sheet data to the mobile phone terminal, and when response data input as an answer to a question item of the questionnaire sheet is transmitted from the mobile phone, A method of receiving the answer data and storing the answer data in a database of the questionnaire collection system, and a counting procedure of counting the stored answer data. 3. The questionnaire collecting method according to claim 1, further comprising a questionnaire result broadcasting step of broadcasting the results totalized by said totalizing step by a broadcast radio wave. 4. A transmission / reception unit connected to a base station for exchanging data with a mobile phone terminal, and a broadcast radio wave transmission unit for transmitting broadcast radio waves receivable by a broadcast radio reception unit of the mobile phone terminal, In addition to establishing a homepage accessible by a mobile phone terminal and capable of distributing a questionnaire, the broadcast radio wave transmitting unit is provided so as to broadcast questionnaire information including address data of the homepage. A questionnaire collection, comprising: a database for storing the answer data when the answer data for the item is transmitted from the mobile phone terminal; and processing means for totalizing the answer data stored in the database. system. 5. The questionnaire collection system according to claim 4, wherein a result summed up by said processing means is configured to be broadcast by a broadcast radio wave transmitting unit by a broadcast radio wave. .