JPH10222275A - Controller for on-vehicle electric accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from misjudging the operation unacceptable state of an operation key part as a fault state of an on-vehicle electric accessory by showing that the operation key part is in the operation unacceptable state owing to control operation of a navigation device on the same display screen in such a case. SOLUTION: As function keys 19 are operated, the operation state of a target electric accessory and the operation key part 24 are displayed on the display screen 11 of a display device 10 at the same time. In this case, when the operation key part 24 is in the operation unacceptable state owing to the control operation of the navigation device as one of on-vehicle accessories, the user can know that. Namely, while operation can not be accepted, a display meaning the operation unacceptable state of the operation key part 24 is made on the display screen 11, for example, by displaying a mark 'CD' on the display screen 11, making the background color of the display screen 11 different from usual one, or not displaying the operation key part 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to a technical field related to improvement of a control device for controlling operation of on-vehicle electric components.

[0002]

2. Description of the Related Art Conventionally, a navigation system for providing various driving information to a driver or the like, for example, a current position of a vehicle, a map around the vehicle, a traveling direction, and a destination is well known. As one example, for example, JP-A-61-2080
In the device disclosed in Japanese Patent No. 75, a display device composed of a CRT (cathode ray tube or cathode ray tube) is provided on an instrument panel, a console box, or the like, and the various types of travel information are displayed on a display screen of the display device. Has been made.

[0003]

By the way, vehicles have
In addition to the navigation device described above, for example, FM / AM
A variety of electrical components such as a tuner, a compact disc player, a cassette deck, an audio device such as an equalizer device for adjusting the frequency characteristics of music, a television (video device), and an air conditioner for conditioning the air in the passenger compartment are mounted. . Normally, these electrical components are separately and separately mounted from other electrical components.For example, an operation unit for switching the operation state of the electric component and a display unit for displaying the operation state are provided for each unit. Distributed.

However, it is the user such as a driver who operates the operation unit of each electrical component and sees the operation state displayed on the display unit, and the arrangement of the operation unit and the display unit is integrated. This is preferable because it can improve the usability, and is advantageous in terms of space.

[0005] Therefore, the CRT according to the prior art described above is used.
Focusing on a display device such as a CRT, the operation sections of the various electrical components and their operation states are displayed together on the same display screen of one display device such as a CRT, thereby improving operability and improving display. It is conceivable to make it easier and reduce the installation space.

However, in that case, the following problem occurs. That is, by operating an operation key portion displayed as an operation key portion on the display screen of the display device, an operation command signal is output to the electric component to control the electric component, but under certain conditions, In some cases, even if the user operates the operation key unit on the display screen, the operation key unit cannot accept the operation. For example, in a navigation device, the entire map information is stored on a compact disc (CD-ROM), and the map information corresponding to the current position of the vehicle is partially accessed to access the compact disc. Is stored in the memory, when the vehicle moves to an area other than the currently stored map information, it is necessary to access new map information from the compact disc. At that time, even if the operation key section displayed on the display screen is operated, the signal cannot be accepted, and there is a possibility that the user may be determined to be in a failure state.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method of displaying an operation unit of an on-vehicle electrical component as an operation key unit on a display screen of a display device as described above. When the operation key unit is in a state where operation cannot be accepted for a control operation of a navigation device, which is one of the electrical components, the operation key unit can be identified by the user, and the user can operate the operation key unit. An object of the present invention is to prevent an unacceptable state from being erroneously determined as a failure state of on-vehicle electrical components.

[0008]

In order to achieve the above-mentioned object, a solution of the present invention is that an operation key section for controlling a vehicle-mounted electric component displayed on a display screen of a display means is a vehicle-mounted electric component. When an operation cannot be accepted due to a control operation of the navigation device, the fact is displayed on the same display screen during that time.

That is, specifically, the configuration of the present invention is as follows:
A plurality of in-vehicle electrical components including a navigation device, display means having a display screen for displaying an operation key portion for outputting an operation command signal to the in-vehicle electrical components, and operation of the operation key portion on the display screen of the display means A control unit for controlling the on-vehicle electrical component, the control unit comprising: an operation key unit on the display screen by the control unit, based on a control operation of the navigation device by the control unit. When the operation of the operation key unit is not possible, an operation unacceptable state indicating that the operation of the operation key unit is unacceptable is displayed on the display screen while the operation is unacceptable. It is assumed that

Thus, even if the operation key section displayed on the display screen of the display means is operated, the operation key on the display screen by the control means is caused by the control operation of the navigation device by the control means. If the operation cannot be accepted by the unit, an operation unacceptable state indicating that the operation of the operation key unit is unacceptable is displayed on the same display screen,
It is possible to prevent the user from erroneously determining that the navigation device is in a failure state.

Specifically, when the operation of the operation key portion on the display screen of the display means is not accepted,
The navigation device accesses the CD-ROM and
It is assumed that information stored in the D-ROM is being read. That is, this navigation device is a CD-R
Since it takes time to access the OM and read the information stored in the CD-ROM, operation of the operation key section on the display screen cannot be accepted during that time.
In this case, the above effect can be obtained effectively.

More specifically, the state in which the operation key unit on the display screen cannot accept operation is a state in which the operation key unit is not displayed on the display screen, and a state in which a predetermined mark is displayed on the display screen. Alternatively, it is preferable that the background color is changed on the display screen.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows an overall configuration of an embodiment of the present invention, wherein 1 is an audio device mounted on a vehicle. This audio device 1 is an FM / AM tuner 2 for inputting a music source, a cassette deck 3, and a compact device. A disc player 4 (CD player) is provided. Reference numeral 5 denotes a television, and reference numeral 6 denotes an air conditioner (air conditioner). Reference numeral 7 denotes a navigation device. Although not shown, the navigation device 7 reads and stores, for example, map data stored in a compact disk (CD), and a geomagnetism for detecting a traveling direction of the vehicle. And a display device to calculate data such as the current position of the vehicle based on the map data stored in the memory and the traveling direction of the vehicle detected by the geomagnetic sensor. 10 is displayed. The above-mentioned devices 1 to 7 constitute on-vehicle electrical components.

Each of the electrical components 1 to 7 has a plurality of well-known functions controlled by an external operation. For example, the audio device 1 is provided with a speaker volume adjustment function, a muting function for temporarily and instantaneously reducing the volume, a tone control function for changing sound quality, that is, a frequency characteristic of sound, and the like. Also,
In the cassette deck 3, the tape is fed at a constant speed,
There are fast reverse and fast forward functions. Further, the air conditioner 6 is provided with a temperature control function, a wind direction control function, and the like.

Reference numeral 8 denotes a control device for controlling the operation of the electric components 1 to 7. The control device 8 includes a central processing unit 9 (CP).
U) and a display device 10 composed of a CRT (cathode ray tube), and the display device 10 is a console box connected to a central lower portion of an instrument panel 12 at a front end of a vehicle compartment as shown in FIG. 13 at the upper end. In FIG. 2, 14 is a steering wheel,
15 is a driver seat, 16 is a passenger seat, 17, 18
Are left and right doors respectively.

The central processing unit 9 includes the electric components 1 to 7
Are connected so that signals can be transmitted and received, and each electrical component 1
Function keys 19 for selecting and switching to
Are input, and these function keys 19, 19,... Are arranged on the left and right sides outside the display screen 11 of the display device 10 as shown in FIG. In addition, the display device 10 has a C
The image processing data created by the central processing unit 9 is stored in the video RAM 21 via the RT controller 20 and the video RAM 21 so as to be able to exchange signals, and the CRT controller 20 controls the display device 10 based on the stored data. It is configured to display an image on the display screen 11.

Further, the operation units for switching the functions of the electric components 1 to 7 and controlling the operation states of the electric components 1 to 7 are grouped according to the degree of operation request. That is, in order to clearly hear the alarm sound of an emergency vehicle such as an ambulance or a patrol car, the speaker volume of the audio device 1 is instantaneously reduced to a low level, or the target indoor temperature set by the air conditioner 6 is adjusted. In this case, it is necessary to operate quickly even while other electric components are in use. For this purpose, the muting function for activating the muting function of the audio device 1 is used as the operation unit having a high operation request degree. A temperature control operation unit for operating a temperature control function of the operation unit and the air conditioner 6 is set.

As shown in FIG. 1, the operation section having a low operation request level is displayed as operation key sections 24, 24,... On the periphery of the display screen 11 of the display device 10, while the operation request level is low. The muting operation unit and the temperature adjustment operation unit having high degrees are provided on the console box 13 outside the display device 10 by a mute key 25 and a temperature adjustment key 2, respectively.
6 are provided as dedicated keys. The mute key 25 and the temperature control key 26 are constituted by ON / OFF switches, and are connected to the central processing unit as shown in FIG. 1, and when these keys 25 and 26 are pressed, The ON signal of the switch is input to the central processing unit 9 to lower the speaker volume of the audio device 1 or adjust the set temperature of the air conditioner 6.

Further, as shown in FIG.
A transparent touch sensor 22 is attached to the 0 display screen 11 in a close contact state. The touch sensor 22 has a plurality of linear transparent electrodes (not shown) arranged so as to cross each other in the horizontal direction and the vertical direction along the display screen 11. When touched, the position of the contact portion is detected by a matrix signal. The output signal of the touch sensor 22 is processed by the decoder 23 and input to the central processing unit 9. The operation key unit 24 of the image displayed on the display screen 11 of the display device 10 is displayed. When a push operation (contact operation) is performed from above the touch sensor 22, a signal corresponding to the operation key section 24 is detected by the touch sensor 22 and input to the central processing unit 9.

Here, a schematic control procedure for the air conditioner 6 and the audio device 1 in the central processing unit 9 will be described with reference to FIG.

First, in the first step S1 after the start, it is determined whether there is a signal input from the mute key 25 or the temperature adjustment key 26, that is, a dedicated key. If the determination is NO for "no input signal", the process advances to step S2 to determine whether the function key 19 for selecting the air conditioner 6 has been operated and the function switching of the air conditioner 6 has been requested. Is determined, and the determination is NO
In this case, the process returns to the first step S1. Also,
When the determination is YES, the operation state of the air conditioner 6 and the image of the operation key unit 24 are displayed on the display device 1 in step S3.
0 on the display screen 11, and then in step S4
Then, it is determined whether or not the operation key unit 24 displayed on the display screen 11 has been turned ON by touch.
When the determination is NO, the air conditioner 6 is displayed on the display screen 1 in step S5.
After controlling to the operation state corresponding to the operation of the operation key unit 24 on the first, the process returns to the first step S1.

On the other hand, if the determination in step S1 is "YES" for "input signal present", the process proceeds to step S6,
It is determined whether the mute key 25 has been operated. If this determination is YES, the volume of the audio device 1 is reduced to a predetermined level in step S7, and the muting system is activated. When the determination is NO, the process proceeds to step S8 to determine whether or not the temperature adjustment key 26 has been operated to increase the adjusted temperature. When the determination is YES, the process proceeds to step S9. When it is determined that the regulated temperature is on the rising side and NO is determined, the regulated temperature is adjusted on the descending side in step S10, and then the process returns to step S1.

Therefore, in the above embodiment, basically, when the operation of each of the electrical components 1 to 7 is to be controlled, the function key 19 corresponding to the target electrical component 1 to 7 is selected and operated. This function key 19
The signal selected by the key 19 is input to the central processing unit 9 of the control device 8 in accordance with the operation of the control device 8. The signal processing in the central processing unit 9 causes the target electric component 1 to be displayed on the display screen 11 of the display device 10. 7 and the operation key section 24,
24,... Are displayed simultaneously. And this display screen 1
By pressing (touching) one of the operation key sections 24, 24,... Displayed on 1 with a finger, a signal corresponding to the operated operation key section 24 is detected by the touch sensor 22. The input signal is input to the central processing unit 9, and an operation command signal is output to the electric components 1 to 7 by the signal processing in the central processing unit 9.
The operation is controlled according to the operation of.

When the muting function of the audio device 1 is operated or the temperature control function of the air conditioner 6 is operated, the mute key 25 or the mute key 25 provided on the console box 13 outside the display device 10 is used. Press and operate the temperature control key 26. By this operation,
The signals from the keys 25 and 26 are input to the central processing unit 9, and the signal processing in the central processing unit 9 outputs an operation command signal to the audio device 1 or the air conditioner 6. The temperature is lowered and the set temperature of the air conditioner 6 is adjusted.

At this time, during the operation of each of the electrical components 1 to 7, the operating state of each of the electrical components 1 to 7 and the operation keys 24, 24,... Are simultaneously displayed on the display screen 11 of the display device 10. Therefore, the operability can be improved and the display of the operation state can be easily recognized by the centralized display.

Moreover, the muting operation and the air conditioner 6 for activating the muting function of the audio device 1
The temperature control operation for activating the temperature control function is highly demanded, and the operation unit having the high demand is operated by the display device 1.
Since the Mute key 25 and the temperature adjustment key 26 are provided exclusively on the console box 13 outside the console box 13 separately from the audio device 1 or the air conditioner 6 on the display screen 11 of the display device 10 Electrical components 2
Even if the operation key sections 24 to 5 and 7 and their operation states are displayed, it is not necessary to sequentially search the display screen 11 for images corresponding to the target audio device 1 or air conditioner 6, and the dedicated By simply operating the mute key 25 or the temperature adjustment key 26, the muting function of the audio device 1 or the temperature adjustment function of the air conditioner 6 is controlled based on the command signal of the dedicated key, regardless of the display state on the display screen 11. The operation can be controlled, and the operability can be further improved.

An operation unit having a low operation request degree other than the mute key 25 or the temperature adjustment key 26 is a display device 10.
Is displayed on the display screen 11 as the operation key section 24, even if the number of the operation sections is large, a large installation space is not required as in the case where they are arranged on the instrument panel 12 or the like. The arrangement space for the operation unit can be reduced.

In the above-described embodiment, the mute key 25 and the temperature adjustment key 2 serving as dedicated keys for which the degree of operation request is high.
Although 6 is arranged in the console box 13 corresponding to the lower side around the display screen 11 of the display device 10, it may be changed to another part. For example, it is also possible to dispose it on the instrument panel 12 remote from the display device 10. The point is that it is sufficient to provide a dedicated key outside the display screen 11 of the display device 10.

In addition to the dedicated keys 25 and 26 serving as the operation units having a high degree of operation request, the display screen 11 of the display device 10 is displayed when the function of the audio device 1 or the air conditioner 6 is selected.
An operation key unit 24 for operating a muting function of the audio device 1 and a temperature adjusting function of the air conditioner 6 above.
Can be displayed, and by operating the operation key unit 24,
The muting of the audio device 1 or the temperature adjustment of the air conditioner 6 may be performed similarly to the operation of the dedicated keys 25 and 26, and the operability can be further improved.

The present invention is not limited to the above embodiment, but includes various other embodiments as described below. The same components as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

(1) In each of the electrical components 1 to 7, there are a plurality of operation keys 24 (an image in which the operation key 24 is combined with the operating state) for controlling the electrical components displayed on the display screen 11 of the display device 10. In some cases, the plurality of operation key units 2
, 24,... Are grouped, and the screen of the frequently used operation key unit 24 is preferentially displayed as the first screen. The screen of the operation key unit 24 for the maniac operation is configured to be displayed after the second screen.

With this configuration, for example, when a plurality of display screens are ordered regardless of the frequency of use, and the screens are sequentially switched until the screen of the intended operation key section 24 is displayed, the operation key section 24 is displayed. It does not take much time to search for, and a menu screen for displaying a list of all the screens at once is displayed. Each time, there is no need to switch to the menu screen, so that the operation of the operation key unit 24 can be facilitated and the required operation key unit 24 can be quickly selected.

(2) The display screen 1 of the display device 10
Even if the operation key unit 24 displayed on the top 1 is operated, there is a case where the operation with the operation key unit 24 cannot be performed. For example, in the case where the entire map information is stored in the compact disc in the navigation device 7 and the map information corresponding to the current position of the vehicle is partially accessed from the compact disc and stored in the memory,
When a vehicle moves to an area other than the currently stored map information, it is necessary to access new map information from the compact disc. At that time, the display screen 11
However, there is a possibility that the driver or the like may determine that a malfunction has occurred because the signal cannot be accepted even if the operation key section 24 displayed in the operation key section 24 is operated.

At this time, while the operation cannot be accepted, for example, a "CD" mark is displayed on the display screen 11, the background color of the display screen 11 is changed from the normal state, or the operation key is pressed. For example, a display indicating that the operation of the operation key unit 24 cannot be received is performed on the display screen 11, such as not displaying the unit 24. By doing so, it is possible to prevent the driver or the like from erroneously determining that the vehicle is in a failure state.

(3) On the display screen 11 of the display device 10, the contents of various instruction manuals are displayed sequentially in the form of a picture-story show with an image of the operating state and the operation key unit 24, and the contents are notified by voice. You may do so. The handling instructions include, for example, starting inspection of a vehicle, attaching / detaching a tire chain, and replacing a tire.

For example, when explaining a method of mounting a tire chain on a vehicle tire, as shown in FIG. 5, a plurality of screens displaying each stage of a tire chain mounting procedure are created, and the plurality of screens are mounted. The information is displayed on the display screen 11 in order according to the procedure, and the mounting operation method corresponding to the display state of each screen is notified by a voice message. That is, as shown in FIG. 5A, when the operation stage of setting the chain on the tire is displayed on the display screen 11, the message "Please set the chain according to the tire" is displayed. Figure (b)
As shown in the figure, when the operation stage for putting the chain on the tire is displayed, "Please put the chain on the tire."
When the operation step of winding the chain around the tire is displayed as shown in FIG. 3C, the message "Please wind the chain around the tire" is output.

Further, in each screen, the previous page key section 24 '
a, stop key portion 24'b, next page key portion 24'c, and operation key portion of menu key portion 24'd are displayed together. For example, in the screen shown in FIG. a
Is operated, the screen returns to the screen showing the previous stage of the mounting procedure as shown in FIG. 11A, and when the next page key portion 24'c is operated, the next stage of the mounting procedure is shown as shown in FIG. Go to the screen. When the stop key section 24'b is operated, the display of the screen is continued as shown in FIG. 4D, and the repeat key section 2 is replaced with the stop key section 24b.
4'e is displayed. Then, the repeat key portion 24 '
e is operated, the other keys 24'a, 24 '
Until c and 24'd are operated, the notification by voice corresponding to the screen is repeated. Furthermore, menu key part 2
When 4'd is operated, regardless of the display order, the menu screen is returned to a menu screen listing all the contents of a plurality of instruction manuals including the mounting method of the tire chain as shown in FIG. Have been.

Therefore, in this case, the operation key unit 2 is displayed on the display screen 11 of the display device 10 in accordance with the contents of the instruction.
Since 4'a to 24'e are displayed, only by operating the necessary operation key portions 24'a to 24'e on the display screen, the procedure of the instruction can be easily found out. Can be easily grasped.

Further, since the handling procedure is displayed on the display screen 11 together with the voice in a picture-story show, it is possible to select a necessary procedure from the handling procedures and to know the contents thereof accurately, thereby improving usability. Can be.

(4) In the embodiment shown in FIG.
When the FM / AM tuner 2 of the audio apparatus 1 is provided with a so-called auto-preset function for automatically detecting and storing all broadcast stations that can be received at the radio wave reception point of the vehicle, after the auto-preset is completed, A list of all currently receivable broadcast stations is displayed on the display screen 11 together with their frequencies.

That is, the names of a plurality of receivable broadcasting stations are displayed together with their frequencies on the display screen 11 of the display device 10, and the currently receiving broadcasting station among them is identified by a predetermined identification (FIG. (Displayed in a frame) to distinguish the driver from other broadcasting stations. The display screen 11
A tuning key section 24 'is also displayed on the top, and the identification display (frame display) being received is moved to another station by operating the tuning key section 24', whereby the receiving station is displayed. It is configured to select a broadcasting station.

With this configuration, the driver or the like can list information of all receivable broadcast stations on the display screen,
A so-called one-shot tuning that immediately selects a broadcasting station to be received from the information on the display screen 11 without the trouble of listening to the broadcastings of those broadcasting stations in order and selecting a station is possible, and thus the on-vehicle station can be used. The usability of the FM / AM tuner 2 and thus the audio device 1 can be enhanced.

(5) In the embodiment shown in FIG. 7, for a so-called graphic equalizer for visually adjusting the output frequency characteristics of the audio device 1, the output frequency characteristics are set in advance for each type of music and are patterned. In this case, the frequency characteristic of each pattern is displayed on the display screen 11 together with the type of music.

That is, on the display screen 11, a plurality of selection key portions 24 ', 24',...
Is displayed, and when one of them is operated and selected, the selected selection key portion 24 'is identified and the audio device 1 is selected.
Is set to the frequency characteristic of the music corresponding to the selection key section 24 ', and the set frequency characteristic itself is also displayed on the display screen 11.

Therefore, in this case, the type of the selected music and its frequency characteristics are simultaneously displayed on the display screen 11, so that it is easy to grasp the frequency characteristics of the selected music.

(6) In the audio device 1 shown in FIG. 8, the operation and the operating state of the tone control for changing the characteristics of the treble and the bass are displayed together.

That is, in the display screen 11 of the display device 10, a bass control key section 24'f for increasing or decreasing the bass characteristic level of the tone control, a bass characteristic level display section 27 showing the actual bass characteristic level, Treble control key part 2 for increasing or decreasing the treble characteristic level
4'g and a treble characteristic level display section 28 representing the actual treble characteristic level.
By the operation of 4'f, the bass characteristic level of the tone control is increased or decreased, and the corrected actual bass characteristic level is displayed on the bass characteristic level display section 27.
On the other hand, by operating the treble control key section 24'g, the treble characteristic level of the tone control is increased / decreased and corrected, and the corrected actual treble characteristic level is displayed on the treble characteristic level display section 28. .

Therefore, in this embodiment, the high / low tone control key portions 24'f, 2 are displayed on the display screen 11.
4'g and its control keys 24'f, 24'g
Thus, the corrected high / low sound characteristic levels are simultaneously displayed, so that the tone control characteristics of the audio device 1 can be easily grasped.

(7) Further, in the embodiment shown in FIG. 9, on the display screen 11 of the display device 10, the operation state of the compact disc player 4 constituting the audio device 1 and the operation key portion 24 for controlling the operation thereof are displayed. 'H-24'
j is also displayed.

That is, in this embodiment, FIG.
As shown in the figure, the display screen 11 of the display device 10 displays a fast forward /
Fast-return key 24'h, pause key 2 for pause
4'i and a plurality of operation keys of the skip key 24'j, the current operation state of the compact disc player 4,
For example, selection modes such as a play mode, a fast-forward mode, a fast-reverse mode, and a random mode (in the figure, a play mode “PLAY” indicating that the content is being played) are displayed, the total number of songs stored on the compact disc, and the number of played songs. The operation status display section 29 indicates the number of tracks indicating the order of the music to be played, the completion time of the music being played, the remaining time, and the remaining time. And this FIG.
In the state shown in FIG. 9A, for example, when the fast-forward section of the fast-forward / fast-return key section 24'h is operated, the compact disc player 4 is switched to the fast-forward mode, and as shown in FIG. The operation state display section 29 is changed to the fast forward mode “FF” and displayed, and at the same time,
The number of tracks, time, and the like are changed.

Therefore, in this case, since the operating state of the compact disc player 4 is displayed, the operating state can be easily grasped. Operation key unit 2
4'h to 24'j and the operation state are displayed on the same screen, and after the operation of the operation keys 24'h to 24'j, the change in the operation state is displayed instantaneously. It is easy to grasp the reaction after the operation. Further, an operation key unit 24 'is displayed on the display screen 11.
h to 24'j are displayed, and the operation key unit 24 'is displayed.
There is no limit to the number of settings of h to 24'j, and the function of the compact disc player 4 is not restricted.

[0052]

As described above, according to the present invention,
An operation key unit for outputting an operation command signal to a plurality of in-vehicle electrical components including a navigation device is displayed on a display screen of a display unit, and the in-vehicle electrical components are controlled by operating the operation key unit on the display screen. In the case, when it is impossible to accept the operation of the operation key unit on the display screen by the control unit due to the control operation of the navigation device by the control unit, it is determined that the operation of the operation key unit cannot be accepted during that time. By displaying the operation unacceptable state to indicate the operation key part displayed on the display screen of the display means, if the operation key part can not accept the operation, the operation key part is displayed on the same display screen The displayed operation key unit cannot accept the operation, so that the user can be prevented from erroneously determining the failure state of the navigation device.

The navigation device is a CD-ROM.
It takes a long time to read the information stored in the CD-ROM by accessing the CD-ROM. Therefore, if it is impossible to receive the operation of the operation key unit on the display screen, The effect can be obtained effectively.

[Brief description of the drawings]

FIG. 1 is a front view showing a display screen of a display device and an arrangement state of operation keys around the display screen in an embodiment of the present invention.

FIG. 2 is a schematic perspective view of a front portion of the vehicle compartment as viewed from the rear of the vehicle compartment.

FIG. 3 is a block diagram illustrating a configuration of a control system.

FIG. 4 is a flowchart illustrating a control procedure performed by a central processing unit.

FIG. 5 is an explanatory diagram showing a display state on a display screen of a display device for handling instructions of a tire chain in another embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a display state on a display screen at the time of auto preset by an FM / AM tuner.

FIG. 7 is an explanatory diagram showing a display state on a display screen when a sound quality characteristic is switched by a graphic equalizer.

FIG. 8 is an explanatory diagram showing a display state on a display screen at the time of tone control.

FIG. 9 is an explanatory diagram showing a display state on a display screen when the compact disc device is operating.

[Explanation of symbols]

 Reference Signs List 1 audio device 2 FM / AM tuner 3 cassette deck 4 compact disc player 5 television 6 air conditioner 7 navigation device 9 central processing unit 10 display device 11 display screen 24, 24 ', 24'a to 24'j operation key unit 25 mute Key 26 Temperature control key

Claims (5)

[Claims] 1. A plurality of in-vehicle electrical components including a navigation device, display means having a display screen for displaying an operation key unit for outputting an operation command signal to the in-vehicle electrical components, and an operation on a display screen of the display means A control unit for controlling the on-vehicle electrical component by operating a key unit, wherein the control unit is controlled by the control unit due to a control operation of the navigation device by the control unit. When the operation of the operation key portion on the display screen cannot be accepted, the operation reception disabled state indicating that the operation of the operation key portion cannot be accepted is displayed on the display screen while the operation is not accepted. A control device for in-vehicle electrical components, wherein the control device is configured to display the information. 2. The control device according to claim 1, wherein the navigation device accesses the CD-ROM when the operation of the operation key section on the display screen cannot be accepted. A control device for in-vehicle electrical components in a state where information stored in the vehicle is read. 3. The on-vehicle electrical equipment control device according to claim 1, wherein the operation reception disabled state is a state in which the operation key unit is not displayed on the display screen. 4. The on-vehicle electrical component control device according to claim 1, wherein the operation unacceptable state is a state in which a predetermined mark is displayed on a display screen. 5. The control device according to claim 1, wherein the operation unacceptable state is a state in which the background color is changed on the display screen.