JPH07326120A - Acoustic device - Google Patents

Abstract

PURPOSE:To eliminate the operation of switching selection, by finding the existence of the loading of a recording medium by a control part and displaying non-existence and at the sane time automatically switching over to the reproduction of a radio receiving part when the reproduction of the recording medium is selected. CONSTITUTION:When a key switch is operated and the CD reproducing part 100 of a recording medium reproducing part is selected through a microcomputer 103, the computer 103 finds the existence of the loading of CD. When it is not loaded, the warning display that it is not loaded is performed in a display part 104 by the computer 103 and at the same time the automatic switching-over to the reproduction of a radio receiving part 101 is performed, so that the operation of switching selection my be eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio device, and more particularly to an audio device having a function of switching between radio reception and a recording medium reproducing unit such as a CD.

[0002]

2. Description of the Related Art A block diagram of FIG.
A description will be given based on the flowcharts of FIGS. 4 and 5. FIG. 1 is centered on the microcomputer 103,
Power source 1 via sound reproducing unit 100 (hereinafter referred to as CD reproducing unit as an example), radio receiving unit 101, display unit 104, key switch 102, and ACC power switch 107
05 and the like are arranged and connected.
It should be noted that in the figure, the structure and description of a general speaker etc. are omitted.

A conventional flow chart shown in FIG. 4 will be described with reference to FIG. 1. A power switch (key switch 10) is controlled by the microcomputer 103.
2) and the ACC power switch 107 are both in the ON state and the radio receiving unit 101 is receiving a broadcast (step 200 in FIG. 4), the CD by the CD reproducing unit is operated by operating the key switch 102. It is assumed that a performance of "compact disc" is selected (step 20 in FIG. 4).
1). If the CD is ready to play at this time, naturally the CD
4 is started (step 203 in FIG. 4), but the CD cannot be played, that is, the CD is not loaded in the CD playback section, or the CD is currently being ejected. In this case, a warning display "no CD" is displayed in this case (step 204 in FIG. 4), and processing such as urging the user to insert a CD or not accepting a key switch operation is performed.

The power switch or the ACC
When each audio device is turned off by turning off the power switch, when the switch is turned on again, the mode (state) before the turning off is normally restored. That is, when the radio reception is performed before the turning off, the radio reception is automatically performed, and when the CD is played, the CD performance is automatically returned. This means that if the warning message "No CD" was displayed before turning off the power switch (step 301 in FIG. 5) (step 300 in FIG. 5), turning on the power switch (302) again causes "CD It returned to the warning display of "none" (step 303 in FIG. 5).

[0005]

However, in the prior art as described above, when a driver (hereinafter, referred to as a user) operates the vehicle-mounted audio device, the purpose of the switch operation is to be changed. It was extremely difficult to monitor the display until it reached the point. In other words, the conventional one gives a warning only by the display when the CD cannot be played due to the fact that the CD is selected but the CD is not inserted, but this is never the best. It cannot be said that the method. That is,
Until the user notices the warning display and performs some operation, the silent state continues, and if he wants to select the radio reception again, he has to operate the switch. If the power switch or ACC switch is turned off and turned on again while the warning "no CD" is displayed, the message "no CD" will be displayed again. This also applies to the user. Until I noticed and performed some operation, the silent state continued,
Also, when selecting radio reception, switch operation must be performed.

In view of the above situation, the present invention makes it possible to omit the switch operation for selecting radio reception by displaying a warning "no recording medium" and automatically setting the radio reception state. Also, in the second invention, when the power is turned off by a switch or the like while the warning "no recording medium" is displayed, and the power is turned on again, radio reception is immediately started, and a silent state is set. It is an object of the present invention to provide an audio device capable of omitting the switch operation and the like.

[0007]

In order to achieve the above object, the present invention according to claim 1 is to monitor the states of a radio receiving section, a recording medium reproducing section, a display section, an operating section and a power switch, In an audio device having a control unit for controlling the receiving unit, the recording medium reproducing unit, and the display unit, when the reproducing unit reproduces the recording medium by the operation unit,
A first determining unit that determines whether or not a recording medium is loaded in the recording medium reproducing unit, and when the first determining unit determines that there is no recording medium, the display unit indicates that there is no recording medium. It is characterized in that the display shown is performed for a predetermined time and a switching means for executing the reproduction of the radio receiving section is configured.

According to a second aspect of the present invention, the control section further determines that the power switch is turned off and turned on again while executing the display indicating that the recording medium is not present. The present invention is characterized by including a judging means and a switching means for immediately executing reproduction of the radio receiving section when the power switch is turned on again by the second judging means.

[0009]

According to the structure of the present invention according to claim 1, when the operation is performed to switch to the recording medium reproducing state, but if the switching is not performed for some reason, a warning to that effect is displayed and the radio receiving state is set. Controlled to set.

According to the configuration of the present invention according to claim 2,
Even if the power switch is turned off while the warning is being displayed, when the power switch is turned on again, the radio reception state is set immediately.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an audio device of the present invention will be described below with reference to the system block diagram of FIG. 1 and the flowcharts of FIGS. 1, a recording medium reproducing unit 100 (hereinafter, referred to as a CD reproducing unit in this embodiment), a radio receiving unit 101, and a display centering on a micro computer (hereinafter referred to as a control unit) 103 serving as a control unit. Part 10
4, key switch 102, and ACC power switch 10
A power source 105 and the like via 7 are arranged and connected. Although the recording medium reproducing unit 100 is a CD reproducing unit, it may be another recording medium, for example, a tape player reproducing unit, or a plurality of them may be arranged.

According to the present invention having the above-described structure, the power switch (the key switch 102 includes its function) and the ACC power switch 107 are turned on, and the radio receiver 101 receives the radio broadcast. When the user operates the CD reproducing unit 100 to reproduce a CD, a signal to that effect is given to the control unit 103 from the key switch 102, and the CD reproducing unit 100 and radio reception are received from the control unit 103. (A control signal is given to the unit 101), for example, when a CD is not loaded in the CD reproducing unit 100, the control unit 103 gives a signal "no CD" to the display unit 104, and the warning display informs the user. "C
Clarify "no D". Further, after displaying "no CD" for a certain period of time, the controller 103 causes the radio receiver 10
1 is given a control signal, and automatically returns to the original radio reception without any operation. Also, as a user may be, while displaying the warning "no CD" as described above,
After the device is turned off by the power switch or the like and then turned on again to operate the device, in this case, radio reception is immediately started. In the present invention, the above "C
It is also possible to perform a sound display of a warning "D not present".

Next, the control operation of the control unit 103 will be described in more detail based on the flowchart. Figure 2
At the CD while receiving the radio broadcast (step 400)
If the CD performance is selected (step 401), the CD is played (step 402), the CD is played (step 403), but if the CD is not loaded or C
In the case where it is in the stage of ejecting D, etc., a warning display of "no CD" (step 404) is displayed for 5 seconds as an example in this case (step 405), and then a radio broadcast is received (step 406). Return to automatically.
It should be noted that the transition to the radio broadcast reception does not have to be performed after the warning display for 5 seconds described above, and the radio broadcast reception may be started while the warning display for 5 seconds is performed. In addition, as shown in FIG. 3, when the power switch is turned off or the ACC power is turned off (step 501) while the warning “no CD” is displayed (step 404), the switch is turned on again (step 502). It automatically returns to the reception of the radio broadcast (step 503). As an example of this specific method, when the ACC power supply is turned off while the warning is being displayed, it is stored in a RAM or the like (not shown) that the state immediately before turning off was the radio reception state. When turned on, the radio reception state is set immediately.

The constitution and the like of the present invention are as described above, but these can be arbitrarily selected and changed according to the purpose, application and the like.

[0015]

As described above, in the automatic switching device for the on-vehicle audio equipment of the present invention, the operation can be simplified as compared with the prior art. In other words, when a recording medium playback selection operation is performed during radio reception, if a recording medium is not installed, a warning message "no recording medium" is displayed and the radio reception is resumed. The selection operation for receiving or the like can be omitted, and the omission of this operation is very desirable from the viewpoint of safe driving for a user driving a vehicle such as a vehicle. Further, in the present invention, when the warning display of "no recording medium" is set to "warning by sound", the user cannot reproduce the recording medium even if the display device is not monitored as in the prior art. You can easily recognize that there is.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system of an audio device.

FIG. 2 is a flowchart showing the operation of the control unit of the present invention.

FIG. 3 is a flowchart showing the operation of the control unit of the present invention.

FIG. 4 is a flowchart showing the operation of a conventional control unit.

FIG. 5 is a flowchart showing the operation of a conventional control unit.

[Simple explanation of symbols]

 100 ... Recording medium reproducing unit (CD reproducing unit) 101 ... Radio receiving unit 102 ... Key switch 103 ... Microcomputer (control unit) 104 ... Display unit 105 ... Power source 107 ... ACC power switch 404 ... (Step) "CD Nothing ”display 405 (Step) Has 5 seconds passed? 406 ... (step) Radio broadcast reception 501 ... (step) Power SW / OFF 502 ... (step) Power SW / ON 503 ... (step) Radio broadcast reception

Claims (2)

[Claims] 1. An audio device having a control unit for monitoring the states of a radio receiving unit, a recording medium reproducing unit, a display unit, an operating unit and a power switch, and controlling the radio receiving unit, the recording medium reproducing unit and the display unit. When the reproduction of the recording medium is selected by the operation unit, the control unit determines a first determination unit that determines whether or not a recording medium is loaded in the recording medium reproduction unit, and the first determination unit. When the determination means determines that there is no recording medium, the display section displays the absence of a recording medium for a predetermined time, and
An audio device, comprising: a switching unit that executes reproduction of the radio receiving unit. 2. The control unit further includes a second determination unit that determines that the power switch is turned off and then turned on again while executing the display indicating that the recording medium is not present. 2. The audio device according to claim 1, further comprising a switching unit that immediately executes reproduction of the radio receiving unit when the power switch is turned on again by the determining unit.