JPH0918430A - Multiplex broadcasting system and reception terminal equipment - Google Patents

Abstract

PURPOSE: To open the information of a sub-program corresponding to the request of a user by extracting information identification data from a multiplex broadcasting signal, writing the data in a prescribed memory and supplying only the information of the sub-program expressed by the written data. CONSTITUTION: Reception terminal equipment 1 inputs received signals S1 received by an antenna 2 and selects an FM multiplex broadcasting signal transmitted by a desired broadcasting station among the signals S1 by switching the oscillation frequency of a local oscillator. In the selected FM multiplex broadcasting signals, the broadcasting signal of a main program is supplied to a stereo demodulation part 4 and the broadcasting signal component of the sub-program is supplied to a band pass filter 5. The demodulation part 4 demodulates the main broadcasting signal and a provided demodulated signal is supplied to a speaker 6. Besides, the filter 5 removes an unwanted signal component, extracts only the sub-broadcasting signal and supplies this signal to a decoder part 7, the LSK modulated sub-broadcasting signal is demodulated and the information data of the sub-program are restored. These restored information data are successively written and stored in a frame memory 7D.

Description

Detailed Description of the Invention

[0001]

[Table of Contents] The present invention will be described in the following order. Field of Industrial Application Conventional Technology Problem to be Solved by the Invention Means for Solving the Problem Action Example (FIGS. 1 to 3)

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiplex broadcasting system and a receiving terminal device, for example, FM (Frequency Modulatio).
n: Frequency modulation) Suitable for application to multiplex broadcasting system.

[0003]

2. Description of the Related Art In recent years, an FM multiplex broadcasting system has been realized in which information such as a broadcasting station name, a program name, a song name or a singer name being broadcast, etc. is multiplexed as a sub program in FM radio broadcasting. The receiving terminal device of this system receives the received F
A normal radio broadcast is reproduced from the M multiplex broadcast signal, and information of the sub program is taken out from the FM multiplex broadcast signal and displayed on a display means such as a liquid crystal display. This allows the user to listen to the radio broadcast while visually seeing the information of the subprogram. In addition to this, news, weather forecasts, traffic information, stock price information, and the like are also considered as subprogram information.

Incidentally, in this type of FM multiplex broadcasting system, for example, DA is used as a method for multiplexing a subprogram on a main program.
A data multiplexing method called RC (Data Radio Channel) is adopted. In the DARC system, information data of a sub program is frequency-multiplexed with a base band signal of the main program by using a sub carrier of 76 [KHz], FM-modulated and transmitted. Further, in this DARC system, the transmission rate of information data is 16 [Kbit / S], and the modulation system is LMSK (Level cont).
Rolled Minimum Shift Keying).

[0005]

By the way, in the case of charging information to be transmitted as a sub-program, the system must be constructed so that only specific users can receive the specific information to be charged. As a method of realizing this, a method of configuring the receiving terminal device so that the user can receive only the specific information desired by the user can be considered. However, in the case of this method, when changing the specific information to be received, or when adding or deleting the specific information, it is difficult to deal with it, and there is a problem that the versatility is lost.

Further, the receiving terminal device is configured so as to be able to receive all sub-programs, and at the time of shipment, identification data (hereinafter referred to as an information release ID) that defines the specific information that can be received.
(Called “IDentification”) and release the information I
A method is considered in which only the specific information represented by D can be received. However, in the case of this method, when the specific information to be received is changed, the receiving terminal device has to be brought into a predetermined service center and the ID has to be reset, which is versatile but increases the user's time and effort. There is a problem that ends up.

The present invention has been made in consideration of the above points, and in the case of charging information for sub-programs, a multiplex broadcasting system capable of easily releasing the sub-program information according to a user's request, and It is intended to propose a receiving terminal device.

[0008]

In order to solve such a problem, according to the present invention, a broadcasting station, in response to an information release request from a user, broadcasts information release identification data for releasing information of a sub-program. The reception terminal device extracts the information release identification data from the received multiplex broadcast signal and writes the information release identification data in a predetermined memory, and only for the subprogram information represented by the information release identification data written in the memory. I made it available to users.

[0009]

The information release identification data is transmitted from the broadcast station side in response to the information release request from the user and is written in the memory of the receiving terminal device. Information release identification data can be set without bringing it in.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

In FIG. 1, reference numeral 1 denotes a receiving terminal device of an FM multiplex broadcasting system to which the present invention is applied as a whole, and D
It receives an FM multiplex broadcast signal multiplexed by the ARC system. First, the receiving terminal device 1 inputs the reception signal S1 received by the antenna 2 into the tuner unit 3. China part 3
Selects the FM multiplex broadcast signal transmitted by the desired broadcast station from the received signal S1 by switching the oscillation frequency of the local oscillator. The broadcast signal component of the main program (hereinafter referred to as the main broadcast signal) of the selected FM multiplex broadcast signal is supplied to the stereo demodulation unit 4, and the broadcast signal component of the sub program (hereinafter referred to as the sub broadcast signal). Is called) to the band pass filter (BPF) 5. The stereo demodulation unit 4 demodulates the main broadcast signal and supplies the demodulated signal obtained as a result to the speaker 6. As a result, the radio broadcast of the main program is output from the speaker 6.

On the other hand, the bandpass filter 5 is 76 [KHz].
It is a filter that passes the band signal component, removes unnecessary signal components, extracts only the sub broadcast signal, and supplies the extracted sub broadcast signal to the decoder unit 7. The decoder unit 7 is a detection circuit 7
A, a synchronous reproduction circuit 7B, a decoder control circuit 7C, a frame memory 7D and an error correction circuit 7E, and demodulates the LMSK-modulated sub broadcast signal to restore the sub program information data. . Specifically, the sub-broadcast signal is detected by the detection circuit 7A to obtain a detection signal,
The synchronous reproduction circuit 7B restores the digital data from the detected signal. This digital data is subjected to error correction by the error correction circuit 7E, and then sequentially written in the frame memory 7D by the decoder control circuit 7C. As a result, the information data of the sub program is stored in the frame memory 7D.

The control unit 8 firstly has a memory (EEPROM) 9
Is accessed to read the information release ID indicating the information that may be released to the user. This information release ID is, for example, a 3-digit binary number, and is set as "110" for stock information and "111" for weather information. Further, the control unit 8 accesses the decoder control circuit 7C and reads the information type data indicating the information type of the sub program from the frame memory 7D. The information type data is, for example, a 3-digit binary number, and is set as "110" for stock information and "111" for weather information.

The control unit 8 compares the read information type data with the information release ID, and if there is an information release ID that matches the information type data, determines that the received subprogram is released. Then, the control unit 8 accesses the decoder control circuit 7C to read the information data of the sub program from the frame memory 7D, and supplies the read information data to the liquid crystal display (LCD) 11 via the driver circuit 10, Information on the sub-program is displayed on the liquid crystal display 11. This allows the user to visually recognize the information about the subprogram.

Incidentally, the memory (RAM) 12 is for storing various information necessary for the operation of the receiving terminal device 1. Further, the information input key (KEY) 13 is for inputting information of a broadcasting station to be selected, and the control unit 8 controls the oscillation frequency of the local oscillator in the tuner unit 3 based on the information input from this. By doing so, a desired broadcast station can be selected. In this way, in the receiving terminal device 1, only the specific information represented by the information release ID set in the memory (EEPROM) 9 can be displayed to the user among the received information of the sub program. It's done.

By the way, in such a receiving terminal device 1, when setting the information release ID, the following method is used. First, for example, the stock information is not released in the receiving terminal device 1, and the user wants to see the stock information. In that case, as shown in FIG. 2, the user 20 first calls the broadcasting station 21 that is broadcasting the stock information, offers the operator 22 that he wants to receive the stock information, and at the same time, the user 20 owns the receiving terminal device. The terminal identification number 1 and the credit card number for deducting the charge are taught, the channel of the receiving terminal device 1 is adjusted to the broadcasting station 21, and the call is waited without disconnecting the call.

Based on this request, the operator 22 inputs the terminal identification number heard earlier into the computer 23. The computer 23 puts the terminal identification number and the information release ID on the stock information broadcast as a sub-program, and outputs the resulting sub-program information to the encoder 24. The encoder 24 converts this sub-program information into a DARC format format and LMSK-modulates it to generate a sub-broadcast signal. Thus, the mixer 25 mixes the sub broadcast signal with the main broadcast signal to generate an FM multiplex broadcast signal, and the FM multiplex broadcast signal is transmitted through the antenna 26.

The receiving terminal device 1 receives the FM multiplex broadcast signal, extracts the information release ID, and stores it in the memory (EEPRO).
M) Write to 9. As a result, the information release ID for releasing the stock information is set for the receiving terminal device 1. The receiving terminal device 1 receives this set information release I
In accordance with D, the subprogram information (that is, stock information) included in the FM multiplex broadcast signal received as described above is displayed on the liquid crystal display 11. The user confirms the display of the stock information, notifies the operator 22 on the broadcasting station side that the stock information has been normally received, and hangs up. In this way this F
In the M multiplex broadcasting system, the information release ID is set for the receiving terminal device 1.

The processing of the receiving terminal device 1 when setting the information release ID will be described below. The receiving terminal device 1
As shown in FIG. 3, the terminal identification number and the information release ID transmitted from the broadcasting station by radio waves are received at step SP1 and transmitted at step SP2. Then, at step SP3, the terminal identification number written at the time of factory shipment is set. Memory (EEPRO
M) Read from 9.

Then, the receiving terminal device 1 proceeds to the next step S.
It is determined whether or not the terminal identification number received in P4 and the read terminal identification number match. If they do not match, the process proceeds to step SP5 to end the processing. If they match, the process proceeds to step SP6. . At step SP6, the received information release ID is written in the memory (EEPROM) 9, and the process goes to the next step SP7 to end the processing. In this way, the receiving terminal device 1 determines whether or not the terminal identification number of its own station is sent from the broadcasting station side, and if it is sent, the received information release ID is stored in the memory (EEPRO).
M) 9 is written, and the information release ID is set.

In the above configuration, first, the receiving terminal device 1
Only the terminal identification number is memory (EEPROM) when shipped
9 is set. For example, when a user who purchases such receiving terminal device 1 wants to receive stock information, he first calls the broadcasting station 21 that broadcasts stock information as a sub-program, and then makes a terminal identification number and a credit card for credit deduction. The number of the card is notified, and the channel of the receiving terminal device 1 is placed on standby in accordance with the broadcasting station. In response to this, the broadcasting station puts the terminal identification number and the information release ID on the subprogram information and broadcasts it. The receiving terminal device 1 recognizes that its own station is designated by the received terminal identification number, and writes the information release ID in the memory (EEPROM) 9. As a result, the stock information is released to the user in the receiving terminal device 1. The receiving terminal device 1 has this memory (EEPROM)
In accordance with the information release ID written in 9, the received subprogram information, that is, stock information, is displayed on the liquid crystal display 11.

In this way, in the case of this embodiment, when setting the information release ID to the receiving terminal device 1, the terminal identification number and the information release ID of the corresponding terminal device are sent from the broadcasting station side by radio waves. After transmitting, the receiving terminal device 1 side receives this, recognizes that its own station is designated by the terminal identification number, and then stores the information release ID in the memory (EEPROM) 9
Set to. As a result, the information release ID can be set without the user having to bring the receiving terminal device to a predetermined service center as in the conventional case, and the labor of the user can be reduced. Further, in this case, since whether or not to release the information to the user is determined by setting the information release ID, it is possible to give versatility to the device.

According to the above configuration, the information release ID for releasing the information is transmitted from the broadcasting station by radio waves and set in the receiving terminal device 1, so that the user can access the information release request when the information release request is issued. Information can be released easily without any trouble.

In the above embodiment, the information release I
The case where data corresponding to the information type data of the sub-program is set as D has been described, but the present invention is not limited to this.
The channel number of the broadcasting station may be set as the information release ID. In short, any method may be used as long as it can be determined whether or not the received subprogram information is released.

In the above embodiment, the case where the stock information is opened to the user has been described, but the present invention is not limited to this, and other information such as traffic information may be used as the information to be opened. Is not limited.

Further, in the above-mentioned embodiment, the case where the credit card number is notified for withdrawing the charge has been described, but the present invention is not limited to this, and a bank account number or the like may be used, and the method is limited. It is not something that will be done.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the FM multiplex broadcasting system in which the sub program is multiplexed to the FM radio broadcasting is described, but the present invention is not limited to this, and the sub program is added to the information of the main program. The present invention can be widely applied to any multiplex broadcasting system that multiplexes program information.

[0028]

As described above, according to the present invention, the information release identification data is transmitted from the broadcasting station side in response to the information release request from the user and is written in the memory of the receiving terminal device. As described above, it is possible to set the information release identification data without bringing the receiving terminal device to a predetermined service center, and thus it is possible to realize a multiplex broadcasting system that can easily release the information of the sub-program in response to the user's request.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a receiving terminal device of an FM multiplex broadcasting system according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of an FM multiplex broadcasting system.

FIG. 3 is a flowchart showing a procedure for setting an information release ID in the receiving terminal device.

[Explanation of symbols]

1 ... Receiving terminal device, 3 ... tuner section, 7 ... decoder section, 8 ... control section, 9 ... memory (EEPROM),
11 ... Liquid crystal display, 21 ... Broadcasting station, 23 ... Computer, 24 ... Encoder.

Claims (6)

[Claims] 1. A broadcasting station that transmits a multiplex broadcast signal in which main program information is multiplexed with subprogram information, and a user who receives the multiplex broadcast signal and receives the main program information and the subprogram information. In a multiplex broadcasting system comprising a receiving terminal device provided, the broadcasting station puts information release identification data for releasing the information of the sub-program on the multiplex broadcast signal in response to an information release request from a user. The receiving terminal device extracts the information release identification data from the received multiplex broadcast signal and writes the information release identification data in a predetermined memory, and the information of the sub-program represented by the information release identification data written in the memory. A multiplex broadcasting system characterized by being provided to users only. 2. The broadcasting station transmits, together with the information release identification data, a terminal identification number indicating an information release target in the multiplexed broadcast signal, and the receiving terminal device includes the received multiplexed broadcast signal. 2. The multiplex broadcasting system according to claim 1, wherein the information release identification data is written in the memory when the terminal identification number displayed matches the own station number. 3. The multiplex broadcasting system according to claim 1, wherein the multiplex broadcasting signal is an FM multiplex broadcasting signal. 4. A reception for receiving a multiplex broadcast signal transmitted from a predetermined broadcasting station and having information of a main program multiplexed with information of a subprogram and providing the user with the information of the main program and the information of the subprogram. The terminal device receives and receives the multiplex broadcast signal transmitted from the broadcasting station in response to the information release request from the user and carrying the information release identification data for releasing the information of the sub-program to the user. Receiving characterized in that the information release identification data is extracted from the multiplexed broadcast signal and written in a predetermined memory, and at the same time, the user is provided only with the information of the subprogram represented by the information release identification data written in the memory. Terminal device. 5. The multi-broadcast signal carrying a terminal identification number representing an information release target is received together with the information release identification data, and the terminal identification number included in the received multi-broadcast signal matches the own station number. The receiving terminal device according to claim 4, wherein the information release identification data is written in the memory when the above is done. 6. The receiving terminal device according to claim 4, wherein the multiplex broadcast signal is an FM multiplex broadcast signal.