JPH0683093B2 - Radio receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is applied to, for example, ARI (Automatic Road Information).
The present invention relates to a radio receiver capable of receiving specific information broadcast by a specific radio station such as a system.

<Prior Art> Conventionally, in a car radio equipped with a voice recording / playback LSI and a D-RAM, even if necessary information such as news and traffic information of a radio broadcast is missed, the voice information stored in the D-RAM By playing back, it is possible to hear the information that has been missed.

<Problems to be Solved by the Invention> In the conventional car radio of this type, since the radio broadcast is not recorded when the car engine is stopped and the car is away from the car, the information broadcast during this time is not heard. There was a problem that the latest information could not be obtained.

As means for dealing with such a problem, for example, Japanese Patent Laid-Open No.
Japanese Patent No. 254834 proposes a program identification receiver having a function of recording a broadcast of specific traffic information even when the engine key is pulled out and the user leaves the vehicle. But,
In the same receiver, by operating the playback switch,
Since the traffic information that has already been recorded can be played back and listened to, even if the latest traffic information is currently being broadcast from a specific broadcasting station, the above-mentioned recording will be performed by the listener's playback switch operation. There is a fear that the traffic information of, that is, the traffic information that is not the latest is reproduced.

The present invention addresses the above-mentioned problems, and eliminates the possibility of reproducing traffic information that is not the latest when specific traffic information is currently being broadcast by a specific broadcasting station. , The purpose is to provide a radio receiver that can always listen to the latest traffic information.

<Means for Solving the Problems> To achieve the above object, the radio receiver according to the present invention is characterized in that it is configured as follows. That is, a memory for storing audio information being received, a first detecting means for detecting a signal indicating that the receiving radio station is a specific station, and a specific radio station is broadcasting specific information. And a second detection unit that detects a signal indicating that the voice information received in response to the detection by the second detection unit is detected by the first detection unit, and the content of the memory is updated. Memory information updating means and information reading means for reading the contents of the memory in response to a reproduction request signal based on a listener's operation, the information reading means responding to the detection by the second detecting means. The reading of the contents of the memory in response to the reproduction request signal is invalidated.

<Operation> According to the above configuration, the latest specific information can always be heard as follows.

That is, the first detecting means detects a signal indicating that the receiving radio station is a specific station, and the second detecting means detects a signal indicating that the specific radio station is broadcasting specific information. Is detected, the memory updating means writes the voice information received in response to the detection by the second detecting means in the memory. The contents of this memory are updated each time specific information is received, and the latest information is stored in the memory.

The information stored in this memory is read by the listener's operation. However, when there is a detection by the second detection means, in response to the detection, the reading of the contents of the memory becomes invalid. That is, when specific information is broadcast from a specific radio station, the memory contents are not reproduced by the listener's operation. Therefore, since the listener can recognize that the latest traffic information is currently being broadcast, it is possible to listen to the latest information currently being broadcast rather than the information stored in the memory.

<Embodiment> FIG. 1 shows a basic configuration of an apparatus for recording and reproducing traffic information in a radio receiver of this embodiment.

The first detection means 0 detects a signal indicating that the radio station being received is a specific station. The second detection means 1 detects a signal indicating that a specific radio station is broadcasting specific information. The memory 2 stores the received voice information.
In the updating means 3, a signal indicating that the radio station being received is a specific station is detected by the first detecting means 0, and the start of broadcasting the specific information of the specific station is detected by the second detecting means 1. Memory 2
Write in. The writing of information in the memory 2 is performed in a storage medium in which information has already been written. Therefore, old information that has already been written is erased and updated with new information. When the reproduction request signal output in response to the operation of the listener is given, the reading means 4 reads the information stored in the memory 2 and outputs it as a reproduction audio signal. However, when the detection by the second detection means 1 is performed, the reading of the contents of the memory in response to the reproduction request signal is invalidated.

The second detection means 1 constantly monitors the start of broadcasting the specific information of the specific station. Therefore, each time the specific information is broadcast, new specific information is written in the memory 2. That is, the latest specific information is always stored in the memory 2. The content of the memory 2 can be arbitrarily reproduced by giving a reproduction request signal except when the detection by the second detection means 1 is performed.

FIG. 2 shows an FM with an in-vehicle cassette tape player of this embodiment.
The concrete structure of a radio receiver is shown. This radio receiver can receive signals of the ARI system, which is a traffic information system for drivers implemented in Europe and the like.

In the figure, 5 is a high frequency amplification and frequency conversion circuit that amplifies the received radio wave from the antenna and converts it into an intermediate frequency signal, 6 is an intermediate frequency amplification and FM detection circuit that amplifies the intermediate frequency signal and performs FM detection, and 7 is detection Stereo demodulation circuit that converts the output to a stereo signal, 8 demodulates the ARI signal A
RI demodulation circuit, 9 is a pre-stage amplification circuit that amplifies the playback sound of the tape, 10 is a tape / radio switching circuit that switches the audio output between the tape player and the radio, 11 is a volume sound quality adjustment circuit, 12
Is a power amplifier circuit, and 13 is a speaker. The above configuration is basically the same as that of the conventional radio receiver.

In addition to the above, this radio receiver is provided with a traffic information recording / reproducing circuit 14, a key matrix 15 and a normal voice / reproducing voice switching circuit 16. The traffic information recording / reproducing circuit 14 updates the contents of the memory by AD-converting the received voice signal and writing the same in the memory, and reads the information in the memory in response to the reproduction request signal based on the operation of the listener. The read information is DA converted and output. The key matrix 15 is composed of a reproduction key for generating a reproduction request signal, a recording set key, and the like. The normal voice / playback voice switching circuit 16 selectively switches between the voice signal from the intermediate frequency amplification and FM detection circuit 6 and the playback voice signal from the traffic information recording / playback circuit 14 and sends it to the stereo demodulation circuit 7.

FIG. 3 shows a detailed configuration of the traffic information recording / reproducing circuit 14. This traffic information recording / playback circuit 14 is a voice recording / playback LS.
It is composed of I17, D-RAM 18, and control microcomputer 19. The voice recording / playback LSI 17 is composed of an AD conversion circuit 20, a DA conversion circuit 21, and a CPU 22.

The voice recording / playback LSI 17 controls the AD conversion of the radio voice signal from the FM detection circuit 6, the writing to the D-RAM 18, the reading of the voice information from the D-RAM 18, and the DA conversion. D-
The RAM 18 stores the digitized radio audio signal.

The control microcomputer 19 is from the ARI demodulation circuit 8 to A
ARI.SK signal and ARI.DK, which are signals that indicate the status of the RI system
A signal is given. The ARI.SK signal is a signal indicating that the receiving radio station is a specific station. The ARI.DK signal is
This is a signal indicating that specific information is being broadcast. The control microcomputer 19 is also supplied with a recording set signal, a reproduction request signal and a power-on signal based on the key operation of the listener from the key matrix 15. The control microcomputer 19 performs a discrimination process of each mode of recording, reproduction or stop based on these signals, and supplies the discrimination signal of each mode to the voice recording / reproducing LSI 17 and the normal voice / reproduction voice switching circuit 16. The table shows the result of the discrimination processing of the control microcomputer 19 corresponding to the status signal.

Hereinafter, each operation of the recording mode and the reproduction mode will be described.

(A) Recording mode The recording mode is a state in which the engine is stopped and the traffic information is recorded during parking.

FIG. 4 shows the operation procedure of this recording mode. To enter record mode, the listener will first press the record set key. Once the recording mode is set (step #
1) The control microcomputer 19 determines whether or not there is an ARI.SK signal, that is, whether the currently received radio station is a station broadcasting traffic information (# 2, # 3). If ARI.SK
If no signal is detected, sound an alarm ((#
4) Inform the listener. If an ARI.SK signal is detected, the AR will be turned off when this radio receiver is turned off.
The I.DK signal is monitored (# 5, # 6). When the ARI.DK signal is detected, the broadcasting of the traffic information starts, so that the recording of the traffic information is started under the control of the voice recording / playback LSI 17. When the recording capacity of the D-RAM 18 is exceeded, recording is stopped (# 8, # 9) and the ARI.DK signal is monitored again (# 6).

In this recording mode, the information already recorded is updated every time the ARI.DK signal is detected, that is, every time the traffic information is broadcast, and the latest traffic information is always recorded. The recording time is limited by the storage capacity of the D-RAM 18.
Recording time of 30 seconds to 1 minute is required to record traffic information. In the recording mode, the received voice information is recorded in the route of the high frequency amplification and frequency conversion circuit 5-> intermediate frequency amplification and FM detection circuit 6-> normal voice / playback voice switching circuit 16-> traffic information recording and playback circuit 14.

(B) Reproduction Mode The reproduction mode is a state in which the recorded traffic information is reproduced according to the operation of the listener.

FIG. 5 shows the operation procedure in this reproduction mode. To enter the playback mode, turn on the radio receiver (# 1
1) When the playback request key is pressed (# 12), the control microcomputer 19 determines whether or not traffic information has already been recorded (# 13), and when it is recorded, the presence or absence of the ARI.DK signal is checked. Judge (# 14). Playback will not occur if the traffic information has not already been recorded or if there is an ARI.DK signal, that is, if the traffic information is currently being broadcast. If the ARI.DK signal is not detected, the recorded traffic information is played back (# 15). When the reproduction of all the recorded contents is completed, the reproduction mode is stopped (# 17). In this playback mode, the playback audio signal is routed through the traffic information recording / playback circuit 14 → normal audio / playback audio switching circuit 16 → stereo demodulation circuit 7 → tape / radio switching circuit 10 → volume sound quality adjustment circuit 11 → power amplifier 12. Then, it is output from the speaker 13.

This radio receiver requires constant monitoring when recording traffic information, so it requires constant monitoring, but in order to reduce current consumption and prevent car battery charging, recording In mode, high frequency amplification and frequency conversion circuit 5, intermediate frequency amplification and FM detection circuit 6, normal voice / playback voice switching circuit 16, ARI demodulation circuit
8, Only the traffic information recording / reproducing circuit 14 and the key matrix 15 are operated. In this case, the current consumption is 300 to 400 on average.
It is mA, and there is no battery rise when parking for at least 1-2 days. When parking for a long time, the circuits of the radio receiver that operate in the above recording mode are turned off.

Although the radio receiver capable of receiving the information of the ARI system is described in the above embodiment, the present invention is not limited to this, and for example, the RDS which is currently in the practical stage.
(Radio Data System) with SK signal of ARI system
It goes without saying that the present invention can also be applied to a radio receiver with an RDS receiving function having a recording / playback system corresponding to TP signals and TA signals corresponding to DK signals.

<Effects of the Invention> As described above, in the present invention, when a signal indicating that the specific information of a specific station is being broadcast is detected, this specific information is recorded in a memory, and the content of this memory is recorded every time the specific information is received. The traffic information broadcast during parking can be recorded, played back and listened to, for example. Moreover, while the recorded content is updated every time there is a broadcast, the memory content can be played by the listener's operation only when the specific information is not broadcast from the specific broadcast station. The latest traffic information can always be heard by receiving and listening to the broadcast when the specific information is broadcast from the station, and by playing back the memory contents when it is not broadcast.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of an embodiment of the present invention, FIG. 2 is a diagram showing a configuration of a radio receiver of the embodiment of the present invention, FIG. 3 is a diagram showing a partial configuration of the embodiment of the present invention, and FIG. FIG. 5 and FIG. 5 are diagrams showing the operation procedure of the embodiment of the present invention. 0 ... First detecting means 1 ... Second detecting means 2 ... Memory 3 ... Update means 4 ... Reading means

Claims (1)

[Claims] 1. A memory for storing audio information being received, a first detecting means for detecting a signal indicating that the receiving radio station is a specific station, and a specific radio station broadcasting specific information. Second detecting means for detecting a signal indicating that the signal is in the middle, and when the first detecting means detects, the voice information received in response to the detection by the second detecting means is written in the memory, and the content of the memory is written. And memory reading means for updating the contents of the memory in response to a reproduction request signal based on a listener's operation, and the information reading means detects the information detected by the second detecting means. In response, the reading of the contents of the memory in response to the reproduction request signal is invalidated.