JPH01195727A - Radio receiver - Google Patents

Abstract

PURPOSE:To listen to traffic information broadcasted during parking by stopping an engine by recording and reproducing by recording specific information in a memory when detecting a signal representing the broadcasting under execution of a specific station, and updating the content of the specific information at every reception of it. CONSTITUTION:A detecting means 1 to detect the signal representing the broadcasting under execution of the specific information of a specific radio station, a memory information update means 3 to update the content of the memory 2 by writing received voice information received corresponding to detection by the detecting means 1, and a memory information readout means 4 to read out the content of the memory 2 corresponding to a reproduction request signal based on the operation of a listener are provided. In other words, when the specific station detects the broadcasting of the specific information under execution, the received specific information is recorded. The content of the memory 2 in which the specific information is stored is updated at every reception of the specific information, and the latest specific information is always stored in the memory 2. In such a way, even when separating from a vehicle after stopping the engine, it is possible to obtain the information broadcasted during that time.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to, for example, API (Automatic Roa
The present invention relates to a radio receiver capable of receiving specific information broadcast by a specific radio station such as an information system.

<Prior art> Conventionally, in a car radio equipped with an audio recording/playback LSI and a D-RAM, even if necessary information such as news or traffic information on a radio broadcast is missed, the audio information stored in the D-RAM cannot be recovered. By playing back, you can listen to this missed information.

<Problems to be solved by the invention> In conventional car radios of this type, radio broadcasts are not recorded when the car's engine is turned off and the car is away from the car, so information broadcast during this time cannot be listened to. There was a problem that the latest information could not be obtained.

Means for Solving the Problems> The radio receiver according to the present invention includes a memory for storing received audio information, and a detector for detecting a signal indicating that a specific radio station is broadcasting specific information. a memory information updating means for updating the contents of the memory by writing the audio information received in response to the detection by the detection means; and memory information reading means for reading out the contents.

<Operation> When the radio receiver according to the present invention detects a signal indicating that a specific station is broadcasting specific information, it records the received specific information. The contents of the memory that stores this specific information are updated every time specific information is received, and the latest specific information is always stored in the memory. The information stored in memory is
It can be read out arbitrarily.

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

The detection means 1 detects a signal indicating that a specific radio station is broadcasting specific information. Memory 2 stores received audio information. When the detecting means 1 detects the start of broadcasting of specific information of a specific station, the updating means 3 writes the subsequently broadcast specific information into the memory 2. This memory 2
When information is written to a storage medium, the information is already written to the storage medium. Therefore, the old information that has already been written will be erased and new information will be created! [This will be updated.] When the reading means 4 is given a reproduction request signal output in response to an operation by a listener, it reads out information stored in the memory 2 and outputs it as a reproduced audio signal.

The detection means 1 constantly monitors the start of broadcasting of specific information from a specific station. Therefore, new specific information is written into the memory 2 every time specific information is broadcast. That is, the latest specific information is always stored in the memory 2. Then, by giving a reproduction request signal, the memory 2
The contents can be played back at will.

Figure 2 shows an F with an in-vehicle cassette tape player according to this embodiment.
The specific configuration of the M radio receiver is shown. This radio receiver can receive signals from the API system, which is a traffic information system for drivers implemented in Yokohama, 7P, etc.

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 a detection circuit. A stereo demodulation circuit that converts the output into a stereo signal, 8 an API demodulation circuit that demodulates the ARI signal, 9 a preamplifier circuit that amplifies the tape playback sound, and 10 a tape/radio that switches audio output between a tape player and a radio. switching circuit.

11 is a volume sound quality adjustment circuit, 12 is a power amplifier circuit, 1
3 is a speaker. The above configuration is basically the same as that of a conventional radio receiver.

In addition to the above, this radio receiver has a traffic information recording and reproducing circuit 14. A key matrix 15 and a normal audio/playback audio switching circuit 16 are provided. Traffic information recording and playback circuit 1
4 updates the contents of the memory by AD converting the received audio signal and writing it to the memory, reads the information in the memory in response to a playback request signal based on the listener's operation, and converts the read information to the DA. Convert and output.

The key matrix 15 includes playback keys for generating a playback request signal, recording keys, and the like. The normal audio/reproduction audio switching circuit 16 selectively switches between the audio signal from the intermediate frequency amplification and FM detection circuit 6 and the reproduction audio signal from the traffic information recording/reproduction circuit 14 and sends the signal to the stereo demodulation circuit 7 .

FIG. 3 shows the detailed configuration of the traffic information recording/reproducing circuit 14. This traffic information recording/reproducing circuit 14 includes a voice recording/reproducing LS117. It is composed of a D-RAM 18 and a control microcomputer 19. Audio recording playback LS11
7 is an AD conversion circuit 20, a DA conversion circuit 21 and a CP
It is composed of U22.

The audio recording/playback LS 117 performs AD conversion of the radio audio signal from the FM detection circuit 6, writes it to the D-RAM 1B, reads audio information from the D-RAM 18, and performs AD conversion of the radio audio signal from the FM detection circuit 6.
Performs various conversion controls. D-RAM 18 stores digitized radio audio signals.

Regulation? The ill microcomputer 19 is ARIf
From the i-key circuit 8, signals indicating the state of the API system such as AR1, SK double signal AR1, and DK double signal are applied. A
The RI and SK double signals are signals indicating that the radio station being received is a specific station. ARI.

DK double signal 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 key operations by the listener from the key matrix 15. The control microcomputer 19 performs processing to determine each mode of recording, playback, or stop based on these signals, and transmits the determination signals for each mode to the audio recording and playback LS 117.
and is applied to the normal audio/playback audio switching circuit 16. The table shows the results of the determination processing of the control microcomputer 19 corresponding to the status signals.

The operations in the recording mode and playback mode will be explained below.

(a) Recording mode Recording mode is a state in which traffic information is recorded while the engine is stopped and the vehicle is parked.

FIG. 4 shows the operating procedure in this recording mode. To enter recording mode, the listener must first press the recording set key. Once the recording mode is set (step #1
), the control microcomputer 19 determines the presence or absence of the ARl and SK double signals, that is, whether the radio station currently being received is a station that broadcasts traffic information (#2, #3). If ARI.

If the SK double signal is not detected, sound an alarm #4) to notify the listener. If the ARl and SK double signals are detected, monitor the ARl and DK double signals when the power of this radio receiver is turned off (#5
．． #6). When the ARl and DK double signals are detected, broadcasting of traffic information starts, and recording of the traffic information is started under the control of the audio recording/playback LS 117. If the recording capacity of D-RAM 18 is exceeded, recording will stop. #8. #9), Monitor the ARl and DK double signals again (#6).

In this recording mode, the already recorded information is updated every time the AR1 and DK double signals are detected, that is, every time 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. To record traffic information, the recording time is 3.
Approximately 0 seconds to 1 minute is required. In the recording mode, the received audio information is recorded along the route of high frequency amplification and frequency conversion circuit 5 - intermediate frequency amplification and FM detection circuit 6 - normal audio/reproduction audio switching circuit 16 - traffic information recording and reproducing circuit 14 .

(b) Playback mode The playback mode is a state in which recorded traffic information is played back according to the listener's operations.

FIG. 5 shows the operating procedure in this reproduction mode. To enter playback mode, turn on the radio receiver #1
1) When the playback request key is pressed (#12), the control microcomputer 19 determines whether traffic information has already been recorded (#13), and if so, determines whether the ARl and DK double signals are present. (#14). Whether traffic information has already been recorded or ARl, DK
When there is a double signal, that is, when traffic information is currently being broadcast, no reproduction is performed. If ARl and DK double signals are not detected, play the recorded traffic information (#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 sound/playback sound switching circuit 16 - stereo demodulation circuit 7 - tape/radio switching circuit 10 - volume sound quality adjustment circuit 11 -> power amplifier 12. The signal is then output from the speaker 13.

In order to record traffic information, this radio receiver must receive a specific radio station, so constant monitoring is required. In mode, high frequency amplification and frequency conversion circuit 5. Intermediate frequency amplification and F
M detection circuit 6゜Normal audio/playback audio switching circuit 16, AP
I demodulation circuit 8. Only the traffic information recording/reproducing circuit 14 and key matrix 15 are operated. In this case, the current consumption is on average 300-400mA, and at least 1-2
The battery will not run out of power if the car is parked for a day.

When parking for a long period of time, turn off the power to each circuit that operates in the radio receiver's recording mode.

In the above embodiment, a radio receiver capable of receiving information of an AR [system] was described, but the present invention is not limited to this.
Needless to say, the present invention can also be applied to a radio receiver with an RDS receiving function, etc., which has a recording/playback system compatible with a TP double signal, a TA double signal, which corresponds to the SK double signal, the DK double signal, and the TA double signal of the API system in the DS (Radio Data System).

<Effects of the Invention> As explained above, in the present invention, when a signal indicating that specific information from a specific station is being broadcast is detected, this specific information is recorded in the memory, and the contents of this memory are updated every time specific information is received. For example, traffic information that is broadcast while the car is parked with the engine stopped can be recorded and played back to listen to it. Moreover, since the recorded content is updated every time there is a broadcast, you can always listen to the latest traffic information.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a diagram showing the basic configuration of an embodiment of the present invention, Fig. 2 is a diagram showing the configuration of a radio receiver according to an embodiment of the present invention, and Fig. 3 is a part of the embodiment of the present invention. FIGS. 4 and 5 are diagrams showing the configuration, and are diagrams showing the operating procedure of the embodiment of the present invention. 1...Detecting means 2...Memory 3...Updating means 4...Reading means Patent applicant Sharp Co., Ltd. Agent Patent attorney Nishi 1) New construction 1 Figure 2 Figure 3 Also Ptn discharge cormorant figure 5

Claims (1)

[Claims] A memory for storing received audio information, a detection means for detecting a signal indicating that a specific radio station is broadcasting specific information, and a detection means for storing the received audio information in response to detection by the detection means. A memory information update means for updating the contents of the memory by writing, and a memory information read means for reading the contents of the memory in response to a reproduction request signal based on a listener's operation, A radio receiver is characterized in that when receiving specific information, the content of the memory is updated by writing the received specific information into the memory, and when a reproduction request signal is input, the specific information stored in the memory is reproduced. .