JPH07143019A - Traffic information recording and reproducing device - Google Patents

Abstract

PURPOSE:To reproduce desired traffic information by a user by providing a recording means which starts the recording and reproducing means when the reception level of detected traffic information is over a prescribed one. CONSTITUTION:A signal of traffic information broadcasting frequency received by a tuner part 11 is sent to a reception level detector 12, and it is judged whether or not the traffic information is broadcasted. The detector 12 judges that the traffic information is broadcasted when the reception level of a wave shows a value over a preset value, and sends a judged result to a controller 4. The controller 4 informs a driver of the reception of the traffic information. When it is judged that the traffic information is sent out by the detector 12, the controller 4 issues an instruction to a recording and reproducing device 3 so as to record the traffic information according to the information of the recording mode switch 15 of an input part 5. The traffic information recorded in the recording and reproducing device 3 is reproduced according to the state of the input part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving device for receiving traffic information that informs road conditions while an automobile is traveling on a road, and particularly, to prevent interference while using other audio equipment. The present invention relates to a device capable of automatically detecting the presence or absence of a signal, recording it, and reproducing it as necessary.

[0002]

2. Description of the Related Art During road construction, traffic information such as traffic congestion information can be obtained from a specific frequency (for example, 1
It is being broadcasted at 620 kz), and while the traffic information is being broadcast, a "traffic information broadcasting" message is displayed on the display board installed on the side of the road to notify the user.

Conventionally, a general automobile radio has been used as a receiving device of this kind, and the receiving frequency is changed to the frequency of the traffic information broadcast, or a switch preset to the frequency dedicated to the traffic information is turned on. I was listening to traffic information.

[0004]

In the conventional apparatus, the user must always pay attention to the display panel "traffic information is being broadcast" and switch operation to change the reception frequency each time. Further, while listening to music and the like due to the development of audio equipment, it may not be preferable or troublesome to interrupt the music and switch to traffic information.

An object of the present invention is to provide a device capable of automatically receiving and recording a traffic information broadcast, and reproducing it at a convenient time for a user as needed.

[0006]

In order to solve the above problems, the present invention provides a receiving means for receiving a traffic information broadcast, a receiving level detecting means for detecting a receiving level of the traffic information broadcast, and the received traffic. Recording / reproducing means for recording / reproducing information, and recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the reception level detecting means is equal to or higher than a predetermined level. It is characterized by.

Further, a receiving means for receiving the traffic information broadcast, a receiving level detecting means for detecting the receiving level of the traffic information broadcast, a recording / reproducing means for recording / reproducing the received traffic information, and the receiving level detecting means. In a traffic information recording / reproducing apparatus having a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the above is equal to or higher than a predetermined level, the reception time of the received traffic information. It is characterized in that a time recording / reproducing means for recording / reproducing is provided.

Further, a receiving means for receiving the traffic information broadcast, a receiving level detecting means for detecting the receiving level of the traffic information broadcast, a recording / reproducing means for recording / reproducing the received traffic information, and the receiving level detecting means. In a traffic information recording / reproducing apparatus provided with a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the above is higher than a predetermined level, or a receiving means for receiving a traffic information broadcast. A reception level detecting means for detecting a reception level of the traffic information broadcast; a recording / reproducing means for recording / reproducing the received traffic information; and a reception level of the traffic information detected by the reception level detecting means of a predetermined level or more. At this time, a traffic information recording / reproducing apparatus having a recording operation activating means for activating the recording operation of the recording / reproducing means, and receiving the received traffic information. In the traffic information recording and reproducing apparatus having a time recording and reproduction means for recording and reproducing time, and is characterized in that the erasing means for erasing the recorded traffic information after the set time is provided.

Further, receiving means for receiving the traffic information broadcast, receiving level detecting means for detecting the receiving level of the traffic information broadcast, recording / reproducing means for recording / reproducing the received traffic information, and the receiving level detecting means. In a traffic information recording / reproducing apparatus having a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the above is equal to or higher than a predetermined level, a silent portion of the received traffic information is provided. And a first operation control means for operating the recording / reproducing means so as to record traffic information during a period from the detected silent portion to the next silent portion. It is characterized by.

Further, a receiving means for receiving the traffic information broadcast, a receiving level detecting means for detecting the receiving level of the traffic information broadcast, a recording / reproducing means for recording / reproducing the received traffic information, and the receiving level detecting means. In a traffic information recording / reproducing apparatus equipped with a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the above is higher than or equal to a predetermined level Second operation control means for operating the recording / reproducing means to end the recording of information is provided.

Further, a receiving means for receiving the traffic information broadcast, a receiving level detecting means for detecting the receiving level of the traffic information broadcast, a recording / reproducing means for recording / reproducing the received traffic information, and the receiving level detecting means. In a traffic information recording / reproducing apparatus including a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the above is a predetermined level or more, the receiving means and the reception level detecting means Is always turned on, and when the reception level of the received traffic information broadcast is above the set level,
It is characterized in that power supply control means for turning on the power supply is provided in required parts other than the receiving means and the reception level detecting means.

Further, a receiving means for receiving the traffic information broadcast, a receiving level detecting means for detecting the receiving level of the traffic information broadcast, a recording / reproducing means for recording / reproducing the received traffic information, and the receiving level detecting means. In a traffic information recording / reproducing apparatus comprising a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected by the above is higher than or equal to a predetermined level, the first receiving device and the first Second receiving device for receiving the frequency of traffic information broadcast during operation, the first receiving device and the second receiving device
The receiving device is characterized by sharing a part thereof.

A receiving device for receiving a radio broadcast,
A silent portion detecting means for detecting a silent portion of the radio broadcast,
Frequency switching means for detecting a silent part of the radio broadcast and switching from the frequency of the radio broadcast to the frequency of traffic information broadcast, and reception level detection means for receiving the radio reception device and detecting a reception level of traffic information. And a recording / reproducing apparatus for recording and reproducing the received traffic information, and a recording operation for activating the recording operation of the recording / reproducing means when the traffic information reception level detected by the reception level detecting means is equal to or higher than a predetermined level. It is characterized by comprising a starting means.

[0014]

When the reception level of the traffic information broadcast is received by the receiving device and the reception level of the traffic information broadcast is equal to or higher than the set level, the recording / reproducing device is activated and the recording / reproducing device is activated. Information can be recorded and played back. Further, the time when the traffic information is received is recorded together with the traffic information data, and at the time of reproduction, the reception time is displayed on the numerical display element, and the reception time is output from the speaker by the voice synthesizer.

Further, since the reception time data is recorded together with the traffic information data, the old traffic information data which has passed the set time can be erased by comparing the received time with the reference time (current time-set time). In traffic information broadcasting, the same information is repeatedly broadcasted, and is composed of one cycle starting from a silent portion and ending at a silent portion. Therefore, one cycle from the beginning to the end of the traffic information is recorded by detecting a silent portion by the silent portion detecting device to start recording, and detecting the next silent portion and ending recording.

Further, since one cycle of traffic information is relatively short, the reception level detecting device determines that the traffic information is being broadcast if the reception level of the traffic information broadcast is equal to or higher than the set level, and the recording / reproducing device determines Is activated. After the start of recording the traffic information, if the recording is finished after a time longer than one cycle of the traffic information, all the necessary traffic information is recorded. Further, the receiving device that receives the traffic information and the detecting device that detects the reception level of the traffic information are always in operation. Therefore, even if the reception level detection device detects that the reception level is equal to or higher than the set level and then the power of the recording / reproducing device and the control device is turned on, the traffic information can be recorded without omission.

Further, both the radio broadcast and the traffic information broadcast can be received by the AM radio receiver, the system configuration is the same and only the reception frequency is different. Therefore, if there are two tuner units that can receive radio broadcasting and traffic information broadcasting, both radio broadcasting and traffic information broadcasting can be received by switching between traffic information broadcasting and radio broadcasting. Further, if the silent part of the radio broadcast is detected by the silent part detecting device during reception of the radio broadcast, it is not felt that the radio broadcast is interrupted because there is no audio signal of the radio during this period. Therefore, it is possible to check whether or not the traffic information is being broadcast by the reception level detection device by switching from the radio frequency reception frequency to the traffic information broadcast frequency, and if the traffic information is broadcast, record it.
After the recording is completed or if there is no traffic information broadcast, by returning to the radio broadcast, one receiver can receive both the radio broadcast and the traffic information broadcast.

[0018]

1 is a system configuration diagram of a traffic information recording / reproducing apparatus of an embodiment of the present invention. Reference numeral 1 denotes a receiving device for receiving traffic information, which includes a receiving antenna 21, a tuner unit 11 for tuning and demodulating operations, an audio amplifying unit 31 for amplifying the demodulated audio signal, and a speaker 41 for converting the audio signal into audio. To be done. Reference numeral 12 is a reception level detection device that detects the reception level (electric field strength of the carrier wave) of the traffic information received by the reception device 1 (tuner unit 11). For example, the reception level is detected by detecting and rectifying the intermediate frequency signal. . Reference numeral 22 is a silent part detection device for detecting a silent part in which the period in which the audio level is equal to or lower than the set value continues for a certain period of time or more. By doing so, the silent part is detected. Reference numeral 3 denotes a recording / reproducing device for recording / reproducing the received traffic information, which is composed of a tape recorder, a voice memory (RAM) and the like. A control device 4 controls the receiving device 1, the recording / reproducing device 3, the output unit 7, and the like, and is composed of a microcomputer. Reference numeral 5 denotes an input unit for instructing the control device 4 to select various functions. The input unit 5 is composed of a switch, a push button, a rotary switch, etc., and is a recording mode selection switch 15 for selecting a recording mode, and a reproduction mode. A reproduction mode selection switch 25, an erase mode selection switch 35 for selecting an erase mode, and a manual reproduction switch 45 are included. A clock 6 measures the current time and time and outputs the information to the control device 4. 7
Is an output unit for making various notifications, and is composed of a buzzer 37 for notifying reception of traffic information, a light emitting diode (LED) 27, and a numerical display element 17 including a liquid crystal display element for displaying the reception time of traffic information. 8 is a voice synthesizer,
Based on an instruction from the control device 4, information, for example, traffic broadcast reception time, is voice-synthesized and sent to the voice amplifier 31.

Next, the basic operation of the traffic information recording / reproducing apparatus of an embodiment of the present invention will be described. First, the receiving operation will be described. Tuner unit 1 via receiving antenna 21
Whether the traffic information broadcast frequency signal received in 1 is sent to the reception level detection device 12 to broadcast the traffic information,
Whether or not is determined. If the reception level of the radio wave is equal to or higher than the set value, the reception level detection device 12 determines that the traffic information is transmitted, and sends the determination result to the control device 4. The control device 4 informs the driver that the traffic information has been received by ringing the buzzer 37 of the output unit 7 and emitting light of the light emitting diode (LED) 27.

Next, the recording operation will be described. When the reception level detection device 12 determines that the traffic information is being broadcast, the control device 4 instructs the recording / reproducing device 3 to record the traffic information according to the state of the recording mode selection switch 15 of the input unit 5. Also, the time when the traffic information is received is recorded.

Next, the reproducing operation will be described. The traffic information recorded in the recording / reproducing apparatus 3 in each of the recording modes described above is reproduced according to the state of the reproduction mode selection switch 25 and the state of the manual reproduction switch 45 of the input unit 5. The audio data of the traffic information reproduced by the recording / reproducing device 3 is amplified by the audio amplifier 31 of the receiving device 1 and then the speaker 41.
Will be played by voice from. In addition, the recorded reception time data is converted into a voice signal by the voice synthesizer 8, and is amplified by the voice amplification unit 31 and the reception time (for example, “Jeun Naji Zerofun”) is reported by voice from the speaker 41. The
Further, the time when the traffic information is received (for example, 17:00) is displayed on the display element 17 such as a liquid crystal display.

Next, the erase operation will be described. The controller 4 controls the state of the erase mode selection switch 35 of the input unit 5 and the reception time of the traffic information so as to effectively use the recording capacity of the recording / reproducing device 3 and not to bother the driver by providing extra information. Then, the recording / reproducing apparatus 3 is instructed to erase the traffic information according to the present time.

Detailed recording, reproducing and erasing operations of the traffic information recording / reproducing apparatus of one embodiment of the present invention will be described in detail below with reference to FIGS. In addition, as the recording operation mode, the mode in which the received traffic information is not recorded, the mode in which the received traffic information is recorded for the entire reception period, the mode in which the received traffic information is recorded for a fixed time after the reception,
An example of a mode in which the received traffic information is recorded from silent portions to silent portions will be described.

As the reproduction operation mode, a mode in which the traffic information is reproduced immediately after receiving and recording the traffic information,
An example of a mode in which the received and recorded traffic information is reproduced at any time will be described. Further, as an erasing operation, an embodiment will be given in which a mode in which information after a lapse of a certain time after reception and recording is automatically erased.

FIG. 2 is a flow chart for explaining the recording mode of the traffic information recording / reproducing apparatus of the embodiment of the present invention. . In step A1, the recording mode selection switch 15
Judge the situation. If the recording mode selection switch 15 is in the mode, the processing ends without recording the traffic information regardless of whether or not the traffic information is broadcast. If not in mode, step A
Move to 2. At step A2, the status of the recording mode selection switch 15 is judged. If the recording mode selection switch 15 is in the mode, the process moves to A3 and the traffic information is recorded according to the recording mode (FIG. 3). If it is not the mode, the process proceeds to step A4. At step A4, the status of the recording mode selection switch 15 is judged. If the recording mode selection switch 15 is in the mode, the process moves to A5 and the traffic information is recorded according to the recording mode (FIG. 4). If it is not the mode, the process proceeds to A6 and the traffic information is recorded according to the recording mode (FIG. 5).

FIG. 3 is a flow chart showing the processing executed by the control device 4 when the recording mode selection switch 15 is in the mode (mode in which the received traffic information is recorded for the entire reception period). At Step B1, it is judged whether or not the traffic information is received. If it is received (at the time point of b1), the process proceeds to Step B2, and if not, the process is ended. In step B2, the recording / reproducing apparatus 3 is caused to start recording, and the process proceeds to step B3. In step B3, it is determined whether or not the reception state of the traffic information is continued. If the reception state of the traffic information is cut off (at the time point b2), the recording is ended in step B4 and the process is ended. That is, according to this processing, the traffic information is recorded over the entire period (b1 to b2) during which the traffic information is received.

FIG. 4 is a flow chart showing the processing executed by the control device 4 in the mode by the recording mode selection switch 15 (the mode in which the received traffic information is recorded for a fixed time after the reception is started). At Step C1, it is judged whether or not the traffic information is received, and if it is received (at the time of c1),
The process moves to step C2, and if not received, the process ends. At step C2, the recording / reproducing apparatus 3 is caused to start recording and then the process proceeds to step C3. In Step C3, it is determined whether or not a preset time has elapsed from the start of receiving the traffic information, and if the set time (Δt) has elapsed, it is determined to be time OVER (at the time of c2), and recorded in Step C4. The process is finished. That is, according to this processing, the time Δt (c1 to c) set after the traffic information is received is set.
2) Traffic information is recorded. Since one cycle of traffic information is short and it is not necessary to listen to the same information over and over again, recording is started at the same time as the reception of traffic information, and after a certain time has elapsed after the start of reception, the recording device is stopped and recorded. The capacity can be used effectively.

FIG. 5 is a flow chart showing the processing executed by the control device 4 when the recording mode selection switch 15 is in a mode (a mode in which received traffic information is recorded from a silent portion to a silent portion). At Step D1, it is judged whether or not the traffic information is received. If the traffic information is received (at the time of d1), the process proceeds to Step D2, and if not, the process is ended. In step D2, it is judged whether the received traffic information is a silent part, and if the voice level is a silent part lower than the set value for a certain period of time (d2 time point), step D3
Move to, and if there is no silence, wait. Step D
In step 3, the recording / reproducing apparatus 3 is caused to start recording and step D4
Move on to. In step D4, it is determined whether the received traffic information is a silent portion. If it is a silent portion (at the time of d3), the process proceeds to step D5. If it is not a silent portion, recording is continued. At step D5, the recording is ended and the process is ended. That is, according to this processing, the period from the silent portion to the next silent portion (d2 to d) in the period in which the traffic information is received.
3) Traffic information is recorded over the entire period. It is prevented that the traffic information data is recorded from the middle, the recording is started at the start of the traffic information data, and the recording is finished in one cycle. Therefore, organized information can be provided to listeners.

FIG. 6 is a flowchart showing the processing executed by the control device 4 when the mode is selected by the reproduction mode selection switch 25 (the mode in which the traffic information is received and recorded is immediately reproduced, and the reproduction is performed as needed after the recording is completed). Is. In step E1, it is judged whether or not the reproduction mode selection switch is in the reproduction mode. If the reproduction mode is selected, the process proceeds to step E2. If not, the process proceeds to step E4. In step E2, it is judged whether or not the recording is completed according to the above-mentioned recording modes. If the recording is completed, the process proceeds to step E3. At step E3, the recording / reproducing apparatus 3 reproduces the traffic information acquired for the radio information regardless of whether it is receiving a radio broadcast or listening to a cassette tape. At step E4, it is determined whether the reproduction switch is ON, and if it is ON, the process proceeds to switch E5. If it is OFF, the process ends. At step E5, the recorded traffic information is reproduced. Receiving traffic information,
It is a function that can start playback at the same time as recording is finished and provide the traffic information to listeners in a timely manner. If the reproduction is interrupt reproduction during reception of a radio broadcast, the reproduction of the original radio broadcast or cassette tape is resumed after the reproduction is completed.

FIG. 7 is a flow chart showing the processing executed by the control device 4 in the mode by the erase mode selection switch 35 (the mode in which the information which has passed a certain time after reception and recording is automatically erased). In step F1, it is determined whether or not the erase mode selection switch 35 is in the erase mode. If the erase mode is selected, the process proceeds to step F2. If it is not the erase mode, the process ends. In step F2, it is determined whether or not the reception time of the traffic information recorded according to the above-mentioned recording modes has passed the set time. If the reception of the traffic information data has passed the set time, the process proceeds to step F3. . If the set time has not elapsed, the process proceeds to step F4. The traffic information data and the time data recorded in the recording / reproducing device 3 are compared with the current time of the clock 6 by the control device 4, and the traffic information which has passed a certain time (for example, 6 hours) (for example, data A is 7 hours). (Passed) is deleted. Therefore, during reproduction, traffic information (for example, data B, C, etc.) within a fixed time (for example, 6 hours)
Only D) is played. In step F3, the recording / reproducing apparatus 3 is caused to erase the recorded traffic information data. In step F4, it is judged whether or not the comparison of all the recorded traffic information data is completed, and if not completed,
Move to step F5. If the comparison has been completed, the processing ends. In step F5, the comparison target data B, data C, and data D of the traffic information data are sequentially changed,
The processing from 2 to step F5 is repeated. Old traffic information is sequentially deleted from all recorded traffic information data, the entire recording capacity can be effectively used, and no extra information is provided to the driver to bother him.

According to this embodiment, only the required portion of the traffic information can be recorded, the trouble of listening to the unnecessary information can be eliminated, and the recording medium can be effectively used. In addition, it is possible to play the traffic information immediately after the recording is finished, or listen to the traffic information at a convenient time after the music such as music is finished. Furthermore, old traffic information is erased one after another, which enables effective use of recording media and organization of information.

FIG. 8 is a system configuration diagram showing a traffic information recording / reproducing apparatus of the second embodiment of the present invention and a flow chart showing a process executed by the control unit 4. This embodiment is a traffic information recording / reproducing apparatus with a function capable of preventing waste of power and deterioration of the apparatus. The time during which traffic information is broadcast while driving on the road is very short, and the receiver is in a stand-by state ready for reception. Among the traffic information receiving devices, the receiving device and the reception level detecting device are always powered on, and the other circuits and devices are powered on after the traffic information is received.

Reference numeral 1 denotes a receiver, which is an antenna (not shown),
It is composed of a receiver 51 up to the intermediate frequency amplification and a receiver 61 after the intermediate frequency amplification. Reference numeral 12 is a reception level detection device that detects the reception level (electric field strength of the carrier wave) of the traffic information received by the reception device 1 (tuner unit 51).
Reference numeral 3 denotes a recording / reproducing device for recording / reproducing the received traffic information, which is composed of a tape recorder, a voice memory (RAM) and the like. A control device 4 controls the receiving device 1, the recording / reproducing device 3 and the like, and is composed of a microcomputer.

The operation of the control device 4 will be described below with reference to the flow chart. In step G1, it is judged whether or not the traffic information is received, and if it is received, the process proceeds to step G2,
If not received, the process ends. Step G2
Then, the control device 4, the recording / reproducing device 3, and the receiver 61 of the intermediate frequency and thereafter are turned on, and the process proceeds to step G3. In step G3, the recording / playback mode selection switch 1
Recording and reproduction are performed according to the selection of 5 and 25, and the process proceeds to step G4. At the switch G4, when the recording and reproducing of the traffic information is completed, the power supplies of the control device 4, the recording / reproducing device 3, the receiver 61 of the intermediate frequency and thereafter are cut off.

According to this embodiment, it is possible to reduce power consumption and prolong the life of the apparatus. FIG. 9 is a system configuration diagram showing a traffic information recording / reproducing apparatus according to the third embodiment of the present invention. The present embodiment is an inexpensive traffic information recording / reproducing apparatus capable of receiving both general AM radio and traffic information. The frequency of traffic information broadcasting is fixed, and the broadcasting system is the same as that of general AM radio. By making both of them as common as possible, the device can be made inexpensive.

Reference numeral 91 denotes a radio broadcast receiving apparatus, which includes a receiving antenna (not shown), an AM radio broadcast receiving tuner 71 for tuning and demodulating operations, an audio amplifying section 31 for amplifying the demodulated audio signal, and an audio signal for audio. It is composed of a speaker 41 for converting into. 12 is a receiving device 91 (tuner unit 7
This is a reception level detection device for detecting the reception level (electric field strength of carrier wave) of the traffic information received in 1). Reference numeral 3 denotes a recording / reproducing device for recording / reproducing the received traffic information, which is composed of a tape recorder, a voice memory (RAM) and the like. Reference numeral 4 denotes a control device for controlling the receiving device 91, the recording / reproducing device 3 and the like, which is composed of a microcomputer. Reference numeral 81 is a tuner that can be received exclusively for the frequency of traffic information, and has a tuning circuit, an intermediate frequency amplification circuit, and a detection circuit. Reference numeral 19 denotes a changeover switch for switching between radio broadcasting and traffic information according to an instruction from the control device 4.

The operation will be described below. The signal received by the traffic information dedicated reception tuner 81 is sent to the reception level detection device 12, and if the reception level of the radio wave is equal to or higher than the set value, it is determined that the traffic information has been detected, and the control device 4 causes the recording / reproduction device 3 The recording is instructed according to the selection of the recording mode selection switch 15 described above.

At the time of reproduction, the changeover switch 19 switches from the radio broadcast receiving tuner 71 to the recording / reproducing apparatus 3, and the traffic information recorded in the recording / reproducing apparatus 3 is output as audio from the speaker 41 via the audio amplifying unit 31. Is output. According to the present embodiment, an inexpensive traffic information recording / reproducing apparatus capable of receiving both general AM radio and traffic information can be obtained.

10 and 11 are a system block diagram showing a traffic information recording / reproducing apparatus of a fourth embodiment of the present invention and a flow chart showing a process executed by the control apparatus 4. The present embodiment is an inexpensive traffic information recording / reproducing apparatus capable of receiving both general AM radio broadcast and traffic information with one AM radio. It switches to the frequency of the traffic information broadcast during the silent time of general AM radio broadcasting, detects the presence or absence of the traffic information, returns to the frequency of the radio broadcasting when there is no traffic information, and records if there is traffic information.

Reference numeral 91 is a radio broadcast receiving apparatus, which includes a receiving antenna (not shown), an AM radio broadcast receiving tuner 71 for tuning and demodulating operations, an audio amplifying section 31 for amplifying the demodulated audio signal, and an audio signal for audio. It is composed of a speaker 41 for converting into. 12 is a receiving device 91 (tuner unit 7
A reception level detecting device for detecting a reception level (electric field strength of a carrier wave) of the traffic information received in 1), and a silence part 22 for detecting a silent part in which a period in which the voice level is below a set value continues for a certain time or more It is a detection device. Reference numeral 3 denotes a recording / reproducing device for recording / reproducing the received traffic information, which is composed of a tape recorder, a voice memory (RAM) and the like. Reference numeral 4 denotes a control device that controls the receiving device 91, the recording / reproducing device 3, and the like.
It is composed of a microcomputer. A selector switch 29 switches between radio broadcasting and traffic information according to an instruction from the control device 4.

The operation will be described below with reference to a flow chart. In step H1, it is judged whether or not the received radio broadcast is a silent part, and if the audio level is a silent part lower than the set value for a certain period of time, the process proceeds to step H2, and if it is not a silent part, it stands by. In step H2, the reception tuner 71 switches the reception frequency from radio broadcast to traffic information broadcast, and the process proceeds to step H3. In step H3, it is determined whether traffic information has been received, and if it has been received, step H3
4. If not received, move to H6. In Step H4, the received traffic information is recorded in the recording mode ~
Recording is started according to the above, and the process proceeds to step H5. In step H5, it is judged whether or not the recording is completed, and if completed, the process proceeds to step H6. If not, continue recording. In step H6, the reception tuner 71 is caused to switch the reception frequency from the traffic information broadcast to the radio broadcast, and the process is completed. That is, according to this processing, it is determined whether or not the traffic information broadcast is present during the silent portion of the radio broadcast.

According to this embodiment, since the presence of traffic information is detected by effectively utilizing the interval between radio broadcasts with one AM radio, it is not necessary to manually switch the channel selection switch, and the radio is not required. There is no interruption in broadcasting. However, when the traffic information is being sent, you cannot listen to the radio broadcast while the traffic information is being recorded.

[0043]

As described in detail above, according to the present invention, traffic information is automatically received and recorded during traffic information broadcasting, and can be reproduced by the user at his or her convenience when necessary. Therefore, the user always pays attention to the "traffic information broadcasting" display board, and the trouble of switching the switch each time is eliminated.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing a traffic information recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a recording operation of the traffic information recording / reproducing apparatus according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a recording operation of a traffic information recording / reproducing apparatus according to an embodiment of the present invention and a recording state diagram of traffic information data.

FIG. 4 is a flowchart showing a recording operation of a traffic information recording / reproducing apparatus according to an embodiment of the present invention and a recording state diagram of traffic information data.

FIG. 5 is a flowchart showing a recording operation of the traffic information recording / reproducing apparatus in one embodiment of the present invention and a recording state diagram of traffic information data.

FIG. 6 is a flowchart showing a reproducing operation of the traffic information recording / reproducing apparatus of the embodiment of the present invention.

FIG. 7 is a flow chart showing the erasing operation of the traffic information recording / reproducing apparatus in one embodiment of the present invention and a traffic information data recording state diagram.

FIG. 8 is a system configuration diagram and a flowchart showing a second embodiment of the present invention.

FIG. 9 is a system configuration diagram showing a third embodiment of the present invention.

FIG. 10 is a system configuration diagram showing a fourth embodiment of the present invention.

FIG. 11 is a flowchart showing a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Receiving device 12 ... Receiving level detecting device 22 ... Silent part detecting device 3 ... Storage / reproducing device 4 ... Control device

Claims (8)

[Claims] 1. Receiving means for receiving traffic information broadcast, receiving level detecting means for detecting receiving level of traffic information broadcasting, recording / reproducing means for recording / reproducing the received traffic information, and receiving level detecting means. A traffic information recording / reproducing apparatus, comprising: a recording operation activating means for activating the recording operation of the recording / reproducing means when the reception level of the traffic information detected in (4) is equal to or higher than a predetermined level. 2. The traffic information recording / reproducing apparatus according to claim 1, further comprising time recording / reproducing means for recording / reproducing a reception time of the received traffic information. 3. The traffic information recording / reproducing apparatus according to claim 1, further comprising an erasing unit for erasing the recorded traffic information after a set time has elapsed. apparatus. 4. The traffic information recording / reproducing apparatus according to claim 1, wherein a silent portion detecting means for detecting a silent portion of the received traffic information, a period from the detected silent portion to a next silent portion, First operation of the recording / reproducing means for recording traffic information
And a motion information recording / reproducing device. 5. The traffic information recording / reproducing apparatus according to claim 1, further comprising a second operation control means for operating the recording / reproducing means so as to end the recording of the traffic information after a lapse of a predetermined time from the start of the recording. A traffic information recording / reproducing device characterized in that 6. The traffic information recording / reproducing apparatus according to claim 1, wherein the receiving means and the receiving level detecting means are always powered on, and the receiving level of the received traffic information broadcast is equal to or higher than a set level. A traffic information recording / reproducing apparatus, characterized in that power supply control means for turning on power is provided in a required part other than the receiving means and the reception level detecting means. 7. The traffic information recording / reproducing apparatus according to claim 1, comprising a first receiving device and a second receiving device for receiving the frequency of the traffic information broadcast during operation of the first receiving device. The traffic information recording / reproducing device, wherein the first receiving device and the second receiving device share a part thereof. 8. A receiving device for receiving a radio broadcast, a silent part detecting means for detecting a silent part of the radio broadcast, a silent part of the radio broadcast for detecting a traffic information broadcast from a frequency of the radio broadcast. A frequency switching means for switching to a frequency; a reception level detecting means for detecting the reception level of traffic information received by the radio receiving device; a recording / reproducing device for recording and reproducing the received traffic information; and the reception level. A traffic information recording / reproducing apparatus comprising: a recording operation starting means for starting the recording operation of the recording / reproducing means when the traffic information reception level detected by the detecting means is equal to or higher than a predetermined level.