JPH0378328A - On-vehicle acoustic device - Google Patents

Abstract

PURPOSE:To listen to traffic information in an audible state by selecting a source before an AM radio receiver main body is set in a first reception station for listening to traffic information when the strength value of an electric field is less than a prescribed value or prescribed time elapses. CONSTITUTION:A control part 11 sets the reception station of the AM radio receiver main body 1 to the first reception station or one of plural second reception stations based on the output of an operation part 5. When the strength value of the electric field in the first reception station in less than the prescribed value in a state where the AM radio receiver main body 1 selects the first reception station or when prescribed time elapses after the AM radio receiver main body 1 selects the first reception station, the reception station of the AM radio receiver main body 1 is set to a second reception station before the first reception station is set. Thus, traffic information can be listened to in the audible state and an operation in the case of stopping listening to traffic information is eliminated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an in-vehicle audio device comprising an AM radio receiver main body or a plurality of audio equipment main bodies including the AM radio receiver main body. .

[Prior Art] Conventionally, when the receiving station on the main body of an AM radio receiver is used as the first receiving station to listen to traffic information, the traffic information can be heard by operating a channel selection key, for example, a preset key, on the operation panel. Select the first receiving station to receive the signal.

By selecting the first receiving station in this manner, traffic information can be listened to.

[Problem to be solved by the invention]

Since the conventional AM radio receiver main body is configured as described above, when an in-vehicle audio device is configured using this AM radio receiver main body, it is possible to tune the first receiving station to listen to traffic information. In this case, traffic information is output from the speaker unit regardless of the field strength value of the first receiving station.

Therefore, if the traffic information transmitting station is far from the receiving location and the field strength value is low, the noise will be large and the traffic information will be difficult to hear.

Furthermore, there is the inconvenience that some operation must be performed when stopping listening to traffic information.

This invention was made in order to eliminate the above-mentioned inconveniences, and provides an in-vehicle audio device that allows traffic information to be heard in an easy-to-hear state and does not require any operation when stopping listening to traffic information. This is what we provide.

[Means to solve the problem]

The in-vehicle audio device according to the present invention includes an AM radio receiver main body that outputs a field strength value of the first receiving station when a first receiving station for receiving traffic information is selected;
an operation section that includes at least a tuning key for selecting a reception station on the radio receiver main body; a speaker section to which the output of the AM radio receiver main body is supplied; Set the receiving station to the first receiving station or one of a plurality of second receiving stations, and set the AM radio receiver to the first receiving station while the main body of the AM radio receiver is tuning to the first receiving station.
When the field strength value of the receiving station becomes less than a predetermined value, or
When a predetermined period of time has elapsed since the M radio receiver main body selected the first receiving station, the receiving station of the AM radio receiver main body is set to the second receiving station before setting it to the first receiving station. It is equipped with a control section that controls the

Further, an in-vehicle audio device according to another invention of the present invention includes:
When you select the first receiving station to receive traffic information,
An AM radio receiver main body that outputs the field strength value of the first receiving station, at least one audio equipment main body different from the AM radio receiver main body, a switch that selects the AM radio receiver main body or the audio equipment main body, and an AM An operation section that includes at least a tuning key for selecting a reception station on the radio receiver main body, a speaker section to which the output of the AM radio receiver main body or the audio equipment main body is supplied, and an AM radio While setting the receiving station of the receiver body to the first receiving station or one of the plurality of second receiving stations,
If the field strength value of the first receiving station becomes less than a predetermined value while the M radio receiver body is selecting the first receiving station, or the AM radio receiver body selects the first receiving station. When a predetermined period of time has elapsed, the source data before setting the receiving station of the AM radio receiver body as the first receiving station is determined, and if the source data is the AM radio receiver body, the source data of the AM radio receiver body is determined. Set the receiving station as the second receiving station before setting it as the first receiving station, and when the source data is other than the AM radio receiver main body, stop the AM radio receiver main body and change the source of the source data. It is equipped with a control section for starting the engine.

[For production]

The control unit of the in-vehicle audio device according to the present invention sets the receiving station of the AM radio receiver main body to the first receiving station or one of the plurality of second receiving stations based on the output of the operating unit. , when the field strength value of the first receiving station becomes less than a predetermined value while the AM radio receiver body is selecting the first receiving station, or the AM radio receiver body selects the first receiving station. When a predetermined period of time has elapsed since the AM radio receiver was set to the first receiving station, the receiving station of the main body of the AM radio receiver is set to the second receiving station before being set to the first receiving station.

Further, the control section of the in-vehicle audio device according to another aspect of the present invention selects the receiving station of the AM radio receiver main body from among the first receiving station or the plurality of second receiving stations based on the output of the operation section. 1, and when the field strength value of the first receiving station becomes less than a predetermined value while the AM radio receiver body is selecting the first receiving station, or the AM radio receiver body selects the first receiving station. When a predetermined period of time has elapsed after selecting the first receiving station, the source data before setting the receiving station of the AM radio receiver body as the first receiving station is determined, and the source data is set to AM.
If it is a radio receiver, set the receiving station of the AM radio receiver to the second receiving station before setting it to the first receiving station, and if the source data is other than the AM radio receiver, set A.
Stop the M radio receiver body and start the source data source.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram showing the configuration of a vehicle-mounted audio device according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 indicates the main body of the AM radio receiver, and when a receiving station is set based on the output of a control unit 11, which will be described later, and a first receiving station for listening to traffic information is selected, the first receiving station is selected. The electric field strength value of one receiving station is output to the control section 11.

2 is the compact disc player body (hereinafter referred to as CD
It is called the player body. ), 3 indicates a digital audio tape recorder main body (hereinafter referred to as DA or T recorder main body), and 4 indicates a C cassette recorder main body.

Reference numeral 5 designates an operation section, which includes switches, keys, etc. for setting the AM radio receiver main body 1 to the C cassette recorder main body 4 to various operations.

Reference numeral 6 indicates a speaker unit connected to the AM radio receiver body 1 to C cassette recorder body 4, and outputs the output supplied from any of the AM radio receiver body 1 to C cassette recorder body 4 as audio, music, etc. This is what is output.

7 is a display unit that displays various information regarding the AM radio receiver main body 1 to C cassette recorder main body 4; 8 is a display unit that stores station data of the receiving station to be selected when the AM radio receiver main body 1 is selected, such as receiving frequency; a non-volatile first memory circuit 9 for storing source data before selecting the first receiving station for listening to traffic information of the AM radio receiver body 1; shows.

Reference numeral 10 denotes a timer circuit, which measures time based on the control of the control section 11.

Reference numeral 11 indicates a control unit, which controls the AM radio receiver based on the outputs of the AM radio receiver body 1 to the operation unit 5, the data of the first memory circuit 8 and the second memory circuit 9, and the output of the timer circuit 10, as described later. It controls the radio receiver main body 1 to the C cassette recorder main body 49 and the display section 7 to the timer circuit 11.

FIG. 2 is a flowchart for explaining the operation.

In FIG. 2, STI to 5T21 indicate each step.

Next, the operation will be explained.

In addition, in order to listen to traffic information from any one of the CD player main body 2 to the C cassette recorder main body 4 (hereinafter referred to as other sources), excluding the AM radio receiver main body 1, the A
When selecting the first receiving station of the M radio receiver main body 1, and when selecting the second receiving station (multiple receiving stations other than the first receiving station) of the AM radio receiver main body 1. The first receiving station may be selected later.

First, when the switch of the operation section 5 is turned on, the control section 11
In step 5TI, it is determined whether the AM radio receiver body 1 has been selected. If the AM radio receiver body 1 has not been selected, it is determined whether another source has been selected (Step 5TI).
Step 5T2).

If another source is selected in the determination of step ST2, the source data of the selected source is stored in the second storage circuit 9 (step 5T3), or another source is selected in the determination of step ST2. If not selected, the process advances to step STI.

Note that if another source is selected in step ST2, the selected source is placed in playback mode.

Also, in the judgment of step STI, the AM radio receiver body 1
is selected, it is determined whether the first channel selection key for selecting the first receiving station on the operation unit 5 has been operated or not.Step 5
T4), if the first selection key is not operated, the second
It is determined whether the channel selection key (one of a plurality of channel selection keys for selecting a reception station for listening to normal information) has been operated (step 5T5).

Note that when the first channel selection key is operated in the determination in step ST4, the fact that the first channel selection key has been operated is displayed, for example, by blinking the light emitting diode of the display section 7.

Then, if it is determined in step ST5 that the second channel selection key is not operated, the receiving station of the AM radio receiver body 1 is set to the station data of the first storage circuit 8, and the AM
The source data of the radio receiver body 1 is stored in the second storage circuit 9.
After storing the information in (step 5T6), the process proceeds to step ST4.

Further, if the second channel selection key is operated in the determination in step ST5, the station data of the selected second receiving station is stored in the first storage circuit 8, and the station data of the selected second receiving station is stored in the first storage circuit 8. After storing the source data in the second storage circuit 9 and setting the selected second receiving station as the receiving station (step 5T7), the process proceeds to step ST4.

Further, if the first channel selection key is operated in the determination in step ST4, it is determined whether the current source is the AM radio receiver main body 1 based on the source data in the second storage circuit 9.Step 5T8 ), if the current source is the AM radio receiver main body 1, after setting the receiving station of the AM radio receiver main body 1 as the first receiving station (step 5T9), the field strength value V of the first receiving station is set. It is determined whether the electric field strength value V3 or more is greater than or equal to the electric field strength value V3 (step 5TIO).

Then, if the electric field strength value ■ of the first receiving station is less than the electric field strength value 75 in the determination in step 5TIO, the receiving station of the AM radio receiver main body 1 is set to the station data of the first storage circuit 8, and After resetting and starting the timer circuit 10 (step 5T11), when the measured value T of the timer circuit 10 reaches the first set time T1, for example, 5 minutes or more (step 5T12), the process proceeds to step ST9.

Further, if the current source is not the AM radio receiver main body 1 in the determination in step ST8, after setting the receiving station of the AM radio receiver main body 1 as the first receiving station (step 5T13)
When the field strength value V of the first receiving station becomes equal to or higher than the field strength value 71 (step 5T14), the output to be supplied to the speaker section 6 is switched to the AM radio receiver body 1, and the current source is stopped (step 5T15). ).

Then, after step 5T15 or step 5T1
0, the field strength value V of the first receiving station becomes field strength value 7.
If it is 1 or more, after resetting and starting the timer circuit 10 (step 5T16), it is determined whether the field strength value ■ of the first receiving station is less than the field strength value ■8 (step 5T17). If the field strength value ■ of the first receiving station is equal to or higher than the field strength value 71, the measured value T of the timer circuit 10 is equal to the second set time T2, for example, 2 minutes during which the traffic information can be heard repeatedly at least twice. If the measured value T of the timer circuit 10 is less than the second set time T2, step 5T18) is determined.
Proceed to T17.

Note that in step 5T16, the display section 7 blinked.
turn off the light emitting diode.

Next, in step 5T17, if the field strength value V of the first receiving station is less than 71, or in step 5T18, the measured value T of the timer circuit 10 is equal to or greater than the second set time T2. If so, it is determined whether the source data in the second storage circuit 9 is the AM radio receiver main body 1 (Step 5T19), and if the source data in the second storage circuit 9 is the AM radio receiver main body 1, the AM After setting the receiving station of the radio receiver body 1 to the station data of the first storage circuit 8 (step 5T20), the process proceeds to step ST4.

Further, if the source data in the second storage circuit 9 is not the AM radio receiver body 1 in the determination in step 5T19, the AM
After stopping (turning off) the radio receiver body 1 and setting the source of the source data to the playback mode (step 5T21), the process proceeds to step ST4.

Note that in the above embodiment, steps 5TIO and 5T14
and 5T17, the field strength value V of the first receiving station
The explanation has been given with an example of comparing the field strength value V1 with the electric field strength value V1.
T17 is a slightly lower electric field strength value (
v2) may also be used.

Although the first memory circuit 8 has been described as a non-volatile example, the first memory circuit 8 may be volatile.

Furthermore, although the example has been explained in which a CD player body 2, a DAT recorder body 3, and a C cassette recorder body 4 are provided as audio equipment bodies different from the AM radio receiver body 1,
It is sufficient that at least one of the CD player main body 2 to the C cassette recorder main body 4 is provided.

Furthermore, the FM radio receiver main body can also be used as an audio equipment main body different from the AM radio receiver main body 1,
When the main body of the audio equipment is an FM radio receiver main body, it is necessary to provide a memory circuit similar to the first memory circuit 8 for storing station data.

〔Effect of the invention〕

As described above, according to the present invention, when the electric field strength value becomes less than a predetermined value while listening to traffic information, or when a predetermined time has elapsed after listening to traffic information, Since the configuration allows you to select the source before setting the AM radio receiver body as the first receiving station, it is possible to listen to traffic information in an easy-to-understand state, and there is no need to operate to stop listening to traffic information. This has the effect of making it unnecessary.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an in-vehicle audio device according to an embodiment of the present invention, and FIG. 2 is a flowchart for explaining an example of the operation. ■...AM radio receiver body, 2...compact
Disk player main body, 3... Digital audio tape recorder main body, 4... C cassette recorder main body, 5... Operating section, 6... Speaker section, 8...
・First memory/storage circuit, 9...Second memory circuit, 1o・
...Timer circuit, 11...Control section.

Claims (2)

[Claims] (1) When a first receiving station for receiving traffic information is selected, an AM radio receiver body outputs the electric field strength value of the first receiving station; an operating section including at least a tuning key for selecting a channel; a speaker section to which the output of the AM radio receiver main body is supplied; and a speaker section that selects the receiving station of the AM radio receiver main body based on the output of the operating section. 1 receiving station or one of a plurality of second receiving stations, and while the AM radio receiver body is tuning to the first receiving station, When the field strength value becomes less than a predetermined value, or when a predetermined period of time has elapsed since the AM radio receiver main body selected the first receiving station, the AM radio receiver main body changes the receiving station to the first receiving station. The second point before setting as a receiving station
An in-vehicle audio device comprising: a control unit configured to be set at a receiving station; (2) an AM radio receiver body that outputs the electric field strength value of the first reception station when a first reception station for receiving traffic information is selected; and at least one AM radio receiver body different from the AM radio receiver body; an operating section including at least a switch for selecting the AM radio receiver body or the audio device body, and a tuning key for selecting a reception station on the AM radio receiver body; and the AM radio reception. a speaker section to which the output of the main body or the audio equipment main body is supplied, and a receiving station of the AM radio receiver main body based on the output of the operating section. and when the electric field strength value of the first receiving station becomes less than a predetermined value while the AM radio receiver body is selecting the first receiving station, or the AM When a predetermined period of time has elapsed since the radio receiver main body selected the first receiving station, determining the source data before setting the receiving station of the AM radio receiver main body to the first receiving station, When the source data is from the AM radio receiver main body, the receiving station of the AM radio receiver main body is set to the second receiving station before being set to the first receiving station, and the source data is from the AM radio receiver main body. An in-vehicle audio device comprising: a control unit that stops the AM radio receiver body and starts the source of the source data when the AM radio receiver body is not in use.