JP3382105B2 - FM multiplex broadcast receiver - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FM multiplex broadcast receiving apparatus for receiving an FM radio wave transmitted by multiplexing additional information data such as characters other than a main program on an FM broadcast.

[0002]

2. Description of the Related Art FM multiplex broadcasting is a broadcasting system in which digital data such as another character is multiplexed and transmitted in a band which is not used for the main sound of an FM broadcasting channel, and is 76 to 9
Broadcasting by digitizing various additional information data other than the main program audio by using the part not used for FM radio broadcasting in one channel band (100 kHz) of 0 MHz band commercial FM radio broadcasting Is.

The contents of services received by the receiver by such FM multiplex broadcasting are already diverse, and mainly include road traffic information, regulation information, weather information such as warnings and warnings, broadcasting stations, program names, news, event information, etc. It is possible to receive various additional information data independent of each channel which is not necessarily related to the program.

Generally, an FM multiplex broadcast receiving apparatus is provided with a display means such as a liquid crystal display capable of displaying a character string of several lines, and when receiving the transmitted additional information data,
The content is displayed on the display means.

[0005]

However, such FM multiplex broadcasting receivers include an on-vehicle or home-use radio cassette player, a portable radio, and the like.
It is only a real-time FM multiplex broadcast receiving device, and the additional information data consisting of the received character string is confirmed on the display means each time, or the additional information data is temporarily stored in the storage means such as a memory. However, it could only be used to visually confirm a part of the additional information data later.

Moreover, since the display means can display only a few character strings at a time and the information is closed in the device, the available information is naturally limited. Further, it is impossible to create or utilize new information such as taking out various digitized additional information data and processing them with an external device to add additional value for use.

Further, the FM multiplex broadcasting receiver is usually small and lightweight in terms of volume and weight, and portability and portability are desired, but it is not always possible to secure a large-capacity data storage area. , It was not possible to make a backup of the necessary additional information data.

Therefore, an object of the present invention is to provide an FM multiplex broadcast receiving apparatus which can effectively store and use additional information data.

[0009]

Was to achieve the above object, there is provided a means for solving]
Therefore, the present invention is an F equipped with a receiving means for receiving an FM multiplex broadcast, performing FM detection, and outputting main program data and additional information data.
An M multiplex broadcast receiving device , comprising: storage means for storing the additional information data, wireless communication means for transmitting the additional information data from the storage means to the outside, and the additional information data having a predetermined occupation rate of the storage means. If there is additional information to which the priority transmission indicator is attached in advance, the additional information data is immediately processed for transmission, and if there is no additional information, the priority transmission indicator is forcibly added to all the additional information data. Transmission control means for performing transmission processing, adding a priority transmission indicator based on the information in the additional information data and immediately performing transmission processing when the communication procedure is manually activated even if the predetermined occupation ratio is not reached ;
In FM multiplex broadcasting receiver having the above wireless communication
The means is a receiving means for receiving radio waves from an external information device.
And the memory occupancy rate is equal to the predetermined occupancy rate.
Has not been reached and the above communication means has not been manually activated.
If you do not want to connect from external information equipment
Connection request is received, the additional information data
Is transmitted .

An FM multiplex broadcast receiving apparatus according to a second aspect is the FM multiplex broadcast receiving apparatus according to the first aspect,
The wireless communication means is infrared communication means, and external information
When a connection connection request from the device is received,
If the connection request of the above is not met, the FM multiplex broadcast receiving device
When a call is actively made from the side and a connection is made,
Either process when normal process is performed without responding
It is characterized by performing .

[0011]

[0012]

[0013]

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an FM multiplex broadcast receiving apparatus of the present invention will be described below with reference to the drawings. FIG. 1 shows a block configuration of an FM multiplex broadcast receiving apparatus of the present invention. Here, the FM signal including the additional information data, which is multiplexed and FM-modulated in addition to the main voice, is received by the receiving means including the antenna 1. The receiving means is composed of an antenna 1, an FM tuner 2 and a data demodulating circuit 3, selects a desired station, receives an FM modulated signal and performs processing until demodulation. The FM signal received by the antenna 1 is
FM detection is performed by the tuner 2, and a main audio signal and additional information data are output. The main audio signal is stereo-demodulated, amplified by the amplifier 9, and output as an audio through the speaker 10. On the other hand, the data demodulation circuit 3 demodulates the additional information data portion, and outputs L-MSK (Minimum Shim) to the output of the FM-detected additional information data.
ft Keying) demodulation to obtain actual additional information data.

The CPU 4 performs display of the apparatus, input / output control of additional information data, control and execution of communication, and controls writing and reading of the memory 5 as a storage means. C
The additional information data demodulated by the data demodulation circuit 3 by the instruction of the PU 4 is written byte by byte to a predetermined address of the memory 5 and temporarily stored. Further, the CPU 4 has a memory 5
When a control code such as a format tag or a designated code is included in the additional information data stored in, the corresponding processing is performed.

The communication controller 6 cooperates with the CPU 4 to control communication procedures such as flow control and buffering during communication, and the CPU 4 and the communication controller 6 constitute control means. The infrared modulation / demodulation circuit 7 modulates the transmission data into a predetermined infrared communication system or demodulates the reception data.
Is composed of a light emitting element such as a photodiode and a light receiving element, and actually inputs and outputs infrared light. The infrared communication means includes an infrared modulation / demodulation circuit 7 and an infrared transmitter / receiver 8. In addition, in the present embodiment, the infrared communication means is capable of transmitting / receiving, but may be configured to perform only transmission.

The infrared modulation / demodulation circuit 7 is IrDA here.
(Infrared Da, an infrared data communication standardization organization
Abbreviation of ta Association) Operates according to the infrared communication system. Note that, instead of the IrDA infrared communication system, the ASK infrared communication system proposed by the present applicant may be used, or both may be used together.

The display unit of the display interface 11 is a liquid crystal display, and when instructed by an instruction means such as a pen or a keyboard (not shown), the contents of the memory 5 can be displayed by an instruction from the CPU 4. The display unit may display the additional information data not only as characters but also as images. Further, the display interface 11 is provided with a user interface section, and by designating a number corresponding to the additional information data by the instructing means, the additional information data stored in the memory 5 is preferentially transmitted to the outside. The additional information data to be added can be designated by adding a priority transmission indicator.

The flow of processing relating to the received additional information data will be described below.

First, the FM multiplex broadcasting receiver of the present invention is
The contents are displayed by the display interface 11, and the additional information data to be transmitted is designated by the instructing means with a priority transmission indicator, whereby the CPU 4 stores the additional information data to be transferred in the memory 5 in which the additional information data is stored.
Data start address and its data length are calculated, and the corresponding additional information data is sequentially transferred to the transmission register of the communication controller 6. The additional information data sent to the transmission register is sequentially subjected to framing processing and then the infrared modulation / demodulation circuit 7
And is transmitted from the light emitting element of the infrared transmitter / receiver 8 to an external information device such as a storage device such as a PC, a printer, a PDA, a hard disk, etc. equipped with the infrared communication means.

At this time, the FM multiplex broadcast receiving apparatus of the present invention operates as a primary station in IrDA and tries to originate a connection by itself, and IrDA (IrLAP: I).
nfrared Link Access Proto
col) compliant station finding procedure (XID sequence) is performed to check the presence of surrounding communicable devices, and when a response is received from the communicable devices, the addition on the memory 5 is performed according to a predetermined protocol. Send the information data to the other device. If no communicable device can be confirmed in the surroundings, the FM multiplex broadcast receiving apparatus displays a message “communication not possible” on the display interface 11 and ends the process. When the infrared communication system is the ASK system, an ENQ signal is transmitted at a fixed time instead of the station finding procedure, and when an ACK signal is received, a procedure for transmitting additional information data conforming to the protocol is performed. When the ACK signal cannot be received, the message "communication is impossible" is similarly displayed on the display interface 11, and the process is terminated.

Next, a communication procedure when the received additional information data is stored in the memory 5 and then transmitted to the outside will be described with reference to FIG.

When the additional information data is stored in the memory 5 in S21, the CPU 4 calculates the memory occupancy rate of the additional information data received up to the present in S22, and if a certain rate (in FIG. 2), is calculated. If it exceeds 4/5), it is first checked in S24 whether or not data to be preferentially transmitted at the start of communication has been designated. If there is additional information data with a priority transmission indicator designated in advance in S24, only that data is marked in S25, and if there is no designation of additional information data with a priority transmission indicator in advance, S26. At, all the additional information data stored in the memory 5 are marked. After that, the procedure after S27 is performed, and the communication procedure is started to automatically transmit the additional information data with the mark. In the present embodiment, the communication procedure is started when the memory occupancy rate reaches a certain value, but if it is determined that the transmission partner is a storage device such as a hard disk, the memory occupancy rate becomes a certain value. You may make it start transmission of additional information data unilaterally when it reaches.

On the other hand, if the memory occupancy rate does not reach the fixed rate in S22, the procedure becomes a normal procedure when communicating with the outside, and the communication procedure is manually started (S2).
3), the additional information data to be transferred in the memory 5 is transferred to S25
The subsequent communication procedure is started by designating with the priority transmission indicator at. The determination in S22 is not limited to the calculation of the memory occupancy rate, and may be based on the number of bytes stored in the memory 5.

Next, when starting the actual communication procedure, first in S27, a procedure for discovering an external device as a transmission destination is performed. Here, since the device itself issues a connection, when the infrared communication system is the IrDA system, the device serves as the primary station and transmits one or more XID-command frames at regular intervals. An external information device within the communication reachable range and capable of accepting a communication connection transmits an XID-response frame in response to the transmitted XID-command frame, and confirms it with this device to communicate with the communication partner. The presence or absence of can be determined.

If an appropriate communicable device cannot be found in the communication partner finding procedure of S27, a message of "communication impossible" is displayed on the display interface 11 in S32, and the process returns to the normal process in S31. . When a communicable device is found in S27, the protocol-specified procedure is performed in S28, and then the additional information data is divided into frames of an appropriate size, and the frame processing such as the start flag and the end flag is performed to perform communication with the other party. Send to device. After the data transfer is completed, the additional information data on the memory 5 which has already been transferred is deleted from the memory in S29, and a message notifying that "communication processing is completed" is displayed in S30
It is displayed in 1 and returns to normal processing.

Even when the memory occupancy rate calculated in S22 does not exceed a certain rate, after displaying the content of the additional information data on the display interface 11,
Starting from S23, S25, S27, S28, S29,
The communication start may be manually activated again in the order of S30.

When it is determined in S24 whether or not the additional information data to be transferred by communication is designated, the header of the additional information data received in S21 is designated by the FM broadcasting station which can be decoded by the present apparatus. When the code description is included, it is recognized that it is to be transferred by communication immediately, and the corresponding additional information data may be marked again in S25.

On the contrary, referring to FIG. 3, the F of the present invention is externally applied.
A communication procedure for communicating with the M multiplex broadcasting receiver will be described.

When the XID command frame by the station finding procedure of the external device is received during the normal processing as the initial state, when the communication with the outside is possible, the station finding response is made after the determination in S42, and actually, Send an XID response frame. When the communication with the outside is impossible due to the state of the device such as the invalidation of the communication function, it does not answer the station discovery from other stations and returns to the normal processing without doing anything (S47).

After the station discovery response is sent, a connection connection request is normally sent from the partner device, and when the connection connection is also accepted in S43, a connection connection acceptance frame is sent to the partner device to establish the connection. . After that, information is exchanged according to the protocol, but at this time, the FM multiplex broadcast receiving apparatus of the present invention is treated as a secondary station, so that data cannot be actively transmitted, and data is randomly transmitted to the outside. It is not convenient for security to transfer it to the device. Therefore, in S44, the CPU 4 receives the frame data including the control code from the external information device, and in S45, the additional information data corresponding to the control code is transmitted from the present apparatus. When the control code is not received in S44, the connection is disconnected and a termination procedure (S46) is performed after a certain period of time.

Although it is not possible to respond to a connection connection request from an external device, it is possible to perform control so that the FM multiplex broadcast receiving device side makes a connection call to actively perform data transfer. , In that case S
After confirming the presence or absence of such control in S48, S45, S
Data transfer is performed in the order of 46 and S47. If the connection is not accepted and the connection connection call is not issued from the own station, the process returns to the normal process without doing anything in the order of S43, S48, and S47.

[0033]

According to the present invention, the additional information data obtained by FM multiplex broadcasting to the external device can be transmitted to the external device and the data can be exchanged, so that the additional information data can be stored and reused. Can be increased.

Further, by using infrared communication for taking out the additional information data to the outside, the cost of the apparatus can be reduced,
In addition to being lightweight and compact, it is also difficult for eavesdropping due to the directivity of infrared rays.

[Brief description of drawings]

FIG. 1 is a diagram showing a block configuration of an FM multiplex broadcast receiving apparatus according to the present invention.

FIG. 2 is a diagram showing a flow of a communication procedure when starting communication to the outside.

FIG. 3 is a diagram showing a flow of a communication procedure when communication is started from the outside.

[Explanation of symbols]

1 antenna 2 FM tuner 3 Data demodulation circuit 4 CPU 5 memory 6 Communication controller 7 Infrared modulation / demodulation circuit 8 infrared transceiver 9 amp 10 speakers 11 Display interface

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Claims (2)

(57) [Claims] 1. A FM multiplex broadcast receiver having a reception means for outputting an FM multiplex broadcast receiving an FM-detected main program data and additional information data, memory means for storing the additional information data, Wireless communication means for transmitting the additional information data from the storage means to the outside, and when the additional information data reaches a predetermined occupancy rate of the storage means, if there is additional information with a priority transmission indicator in advance, The additional information data is immediately transmitted, and if there is no additional information data, the priority transmission indicator is forcibly added to all the additional information data for transmission processing, and the communication procedure is manually started even if the above-mentioned predetermined occupancy rate is not reached. FM multiplex broadcasting receiver odor and a transmission control means for transmitting processed immediately by adding priority transmission indicator based on the information of the additional information data to be
Te, the wireless communication means, receiving a radio from an external information device
The memory occupancy rate is above
The specified occupancy rate has not been reached and the above communication means is manually activated.
The external information device using the above receiving means when it is not moved.
When a connection connection request from the device is received, the above
FM multiplex broadcasting characterized by transmitting additional information data
Receiver. In FM multiplex broadcast receiving device according to claim 1, said wireless communication means is an infrared communication means, when a connection request for connection from the external information apparatus is received, responding to the connection request If not, Izu case of performing the case of actively calling connected from the FM multiplex broadcast receiving apparatus, the normal process without responding to the connection request
An FM multiplex broadcast receiver characterized by performing either one of these processes .