JPH08147953A - On-vehicle acoustic apparatus - Google Patents

Abstract

PURPOSE: To return an acoustic apparatus to a desired operation without viewing an operation panel since the operation can be returned to the action before setting of an emergency operation state by providing the operation panel with a key and operating this key. CONSTITUTION: An operation mode just before a power source key switch 22 is turned off is, read out of a RAM 9 storing this mode and the apparatus is operated in this mode when this key switch is turned on. The operation mode just before turning-on of the key is stored in the RAM 9 when an ISR key switch 21 is turned on during ordinary operation. In succession, a reception unit 3 and a sound source changeover switch 6 are set at a traffic information broadcasting receiving state in the ISR reception mode by the storage of a ROM 8. The power source switch is turned off without storing the ISR operation state just before the on turning-on of the key in the RAM 9 when the switch 22 is turned on in this state. In succession, the operation is not reset to the ISR operation and returns to the state stored in the RAM 9 just before the shift of the ISR operation by turning-on of the power source. As a result, the cancellation of the ISR operation mode is possible if the power source is turned on/off during the ISR operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device such as a vehicle-mounted radio, tape player, compact disc player or the like.

[0002]

2. Description of the Related Art Conventionally, as an acoustic device of this type, Japanese Patent Laid-Open No.
There is a technology represented by No. 2-107490. These techniques include, for example, in an audio device equipped with a radio and a tape player, if the emergency call key is operated while setting the operating state of a device for listening to a tape player other than the radio, the preset radio station is immediately It is designed to be used for in-vehicle audio equipment because it can be listened to, and even if the equipment is in any operating state, it can be received by a single operation of the emergency call key, for example, the traffic information station that broadcasts traffic information can be received. There is.

[0003]

In the above-mentioned prior art, when the emergency call key is used to enter the emergency operation state of the traffic information station, the operation of the equipment immediately before the emergency operation state is set. To return to the state, the emergency call key had to be operated again.

In particular, traffic information broadcasts such as expressways can be received only in a predetermined section, and the reception situation deteriorates as the vehicle moves while the traffic information station is receiving the operation of the emergency call key. Even if you try to return to the operating state of
The emergency call key had to be operated again, and there was a danger that the driver would look away from the front for key operation.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to easily change from a state in which a device operating state is preset by the emergency call key to a state before the operation of the emergency call key. The main purpose is to provide an audio device that can be returned to the.

[0006]

In order to solve the above-mentioned problems, the on-vehicle audio system according to the present invention comprises a first key monitoring means for monitoring the operation of an emergency call key during normal operation, and the first key. Storage means for storing the operation state of the device immediately before the operation of the emergency call key is detected by the monitoring means; and when the operation of the emergency call key is detected by the first key monitoring means, the device is operated in a predetermined operation state. An emergency operation setting means for setting, and a second key monitoring means for monitoring operation of at least a power key, a volume key, an emergency call key, and a key arranged in a predetermined region of the operation panel when the emergency operation is set. The gist is that the second key monitoring means includes a first operation restoring means for returning the device to the device operating state stored in the storage means when the operation of the key is detected.

[0007]

According to the above construction, since the key arranged in the predetermined area of the operation panel including the emergency call key can be used to return to the operation state before the emergency operation state is set during the emergency operation, it is possible to visually check the operation panel. The desired operation can be achieved.

[0008]

EXAMPLES Examples of the present invention shown in FIGS. 1 to 4 will be described below. FIG. 1 is a basic block diagram. The microcomputer 1 operates the operation switch group 2 to operate the receiving unit 3, the tape deck unit 4, the CD deck unit 5, the operation mode of the sound source changeover switch 6, and the receiving operation of each unit. / Drive / display control is performed.

In the figure, a ROM 8 is a storage element for storing program initial data and the like, and a RAM 9 is a storage element for storing rewritable data such as preset data of the receiving unit 3.

FIG. 2 is a front view showing an example of a front operation panel. Reference numerals 11 to 16 are preset channel key switches for writing a frequency in the RAM 9 and reading a reception frequency from the RAM 9 in the radio mode, and reference numerals 17 to 20. Is a mode switch key switch for radio, compact disc, tape deck, etc., reference numerals 23 and 24 are volume up / down key switches, reference numeral 21 is an emergency call (hereinafter referred to as ISR) key switch, reference numeral 26 is a tape insertion slot, reference numeral Two
7 is a display unit.

Particularly, in the present invention, the preset channel key switch group 28 and the mode changeover switch group 29 arranged in the lower central area of the operation panel are referred to as a specific area key switch 25.

Next, the operation of the embodiment of the present invention will be described below with reference to the flow charts of FIGS.
First, FIG. 3 is a side for storing the operation mode immediately before that when the power is turned off or when the ISR key switch is operated. RAM that stores operating modes
The immediately preceding operation mode data is read from 9 and the device is set to that operation mode (S-2). For example, if the immediately preceding operation mode is the tape deck mode, the tape deck unit 4 is turned on to bring it into a reproduction state, and the sound source changeover switch 6 is made to select the audio output from the tape deck unit 4.

After that, the normal operation such as the processing such as the selection operation in each mode is accepted, for example, the processing such as reproduction / fast forward / rewind in the tape deck mode (S-3). Of course, if the mode switching key switch 29 is operated here, the operation mode switching is executed.

When the ISR key switch 21 is turned on during this normal operation (S-4), the operation mode immediately before it is turned on is stored in the RAM.
9 is stored and updated (S-5). Then, from ROM8 I
The reception state of the AM band 1620 kHz in the tuner operation mode selected by the reception unit 3 set as the SR operation mode is set in the reception unit 3 and the sound source changeover switch 6 (S-6) and (S-7). This state is the traffic information broadcast receiving state. On the contrary, in (S-4), if the power key switch 22 is turned on without the ISR key switch 21 being operated, the operation mode immediately before that time is stored in the RAM 9 and the power is turned off.

Next, when the power key switch 22 is turned on (S-9) while listening to the traffic information broadcast in (S-7), the power is turned off without updating the last ISR operating state in the RAM. (S-10). By changing the writing to the RAM 9 in the state before the power is turned off as in (S-8) and (S-10), when the power is turned off in the ISR operation mode, the ISR is turned on again when the power is turned on again (S-1). It does not return to the operating state, but returns to the operating mode before shifting to the ISR operating mode. Therefore, if the power is turned off / on in the ISR operation state, the ISR operation mode is also released.

Here, returning to (S-9), if the volume up / down keys 23 and 24 are operated without turning off the power in the ISR operation state (S-11), the microcomputer 1 accepts the volume up / down. Execute processing (S-1
2). The reason why the volume up / down operation is accepted in this ISR operation state is to enable the volume up when the traffic information is difficult to hear.

As described above, in the ISR operation state, the IS
When the R key switch 21 or the specific area key switch 25 is turned on (S-13) (S-14), the device returns to the immediately previous operation mode stored in the RAM 9 (S).
-15).

FIG. 4 shows an example in which the operation mode after successive changes is stored in the RAM 9 as the final operation mode when the operation mode is changed. (S-1) to (S-3)
The steps up to this are common to the example of FIG. Now, in FIG. 4 (S-3)
When the mode changeover key switch 29 is operated during the normal operation in (S-20), the microcomputer 1 changes to the operated operation mode (S-21), and the changed new mode is set as the final operation mode. It is stored and updated in the RAM 9 (S-22).

In such an operating state, when the ISR key switch 21 is turned on (S-23), the IS
The R operation mode is not stored in the RAM 9 as the final operation mode and is set to the reception operation mode of the AM band 1620 kHz by the reception unit 3 set in the ROM 8 in advance (S-
24), switch the sound source selector switch 6 to the receiving unit 3 side (S-25). Also, in (S-23), ISR
Power switch 22 without turning on key switch 21
If is operated (S-26), the power is turned off. On the other hand, also in (S-25), if the power key switch 22 is operated (S-27), the power is turned off (S-28).
And then finish.

On the contrary, the power key switch 2 is pressed at (S-27).
If the volume up / down key switches 23 and 24 are operated in the ISR operating state without operating the button 2, the volume up / down processing is executed (S-29) and (S-30). When any one of the ISR key switch 21 and the specific area switch 25 is operated again in the ISR operation state (S-31), (S-32) the final operation mode stored in the RAM 9 is called. To return the device to its operating mode. Therefore, if the FM band 80 MHz reception state in the tuner operation mode is set before the ISR operation state is set, the FM band 80 MHz reception in the tuner operation mode is similarly restored.

In the above-described embodiment, the ISR operation mode is set to receive the AM band 1620 kHz in the tuner operation mode, but the present invention is not limited to this, and is set to receive a predetermined frequency in the FM band even in the same tuner operation mode. Alternatively, the compact disc operation mode may be used instead of the tuner operation mode.

[0022]

As described above in detail, the present invention claims 1.
According to the invention, when not only the ISR key switch but also one of the specific area key switches arranged in a predetermined area of the operation panel is operated in the ISR operating state,
The operation mode before the operation state can be restored, and the mode can be easily and promptly restored, and since it is limited to the operation keys in the specific area, it also has an action of preventing an erroneous operation that erroneously returns the operation mode. Further, according to the invention of claim 2, since the power switch is accepted even in the ISR operating state, the power-off operation in the ISR operating state becomes easy. Further, in the invention of claim 3, the power is turned off in the ISR operation state,
When the power is turned on again, it is possible to return to the operation mode before the ISR operation mode, so that the power key switch can be released from the ISR operation.

[Brief description of drawings]

FIG. 1 is a basic block diagram of the present invention.

FIG. 2 is a front view of an operation panel.

FIG. 3 is an operation flowchart showing an embodiment of the present invention.

FIG. 4 is an operation flow chart showing another embodiment of the present invention.

[Explanation of symbols]

 1 Microcomputer 2 Operation key switch group 3 Reception unit 4 Tape deck unit 5 Compact disc deck unit 6 Sound source selection switch 7 Display unit 8 ROM 9 RAM 21 Emergency call (ISR) key switch 22 Power key switch 23, 24 Volume up / down key Switch 25 Specific area key switch 26 Tape insertion slot 27 Display section 28 Preset channel key switch 29 Mode selection key switch

Claims (3)

[Claims] 1. A first key monitoring means for monitoring the operation of an emergency call key during normal operation, and a device operation state immediately before the operation of the emergency call key is detected by the first key monitoring means. A storage unit, an emergency operation setting unit that sets the device to a predetermined operation state when an operation of the emergency call key is detected by the first key monitoring unit, and at least a power key and a volume when the emergency operation is set. Key,
Second key monitoring means for monitoring the operation of the emergency call key and keys arranged in a predetermined area of the operation panel; and when the second key monitoring means detects a key operation, it is stored in the storage means. An audio device, comprising: a first operation returning means for returning the device to an operating state of the device. 2. The power supply control means for canceling the emergency operation setting and turning off the power supply of the device when the second key monitoring means detects the operation of the power supply key. Sound device. 3. A second operation return for returning the equipment to the equipment operating state stored in the storage means when the equipment is turned on again by the power supply control means and then turned on again. The sound device according to claim 2, further comprising: