JPH08339251A - Controller for electrical equipment - Google Patents

Abstract

PURPOSE: To prevent the operation acceptance impossible state of an operation key part from being erroneously judged as a fault state of an electrical equipment by displaying the operation acceptance impossible state on a display screen when the operation reception of the operation key part on a coated screen is impossible by a control means for controlling the electrical equipment by the operation of the operation key part. CONSTITUTION: There is a case that the operation by the operation key part 24 can not be performed even when the operation key part 24 displayed on the display screen 11 of a display device 10 is operated. At this time, the control means for controlling the electrical equipment by the operation of the operation key part 24 performs display for indicating the operation acceptance impossibility of the operation key part 24 on the display screen 11 by displaying the mark of 'CD' on the display screen 11, changing the color of the background of the display screen 11 from the one at the normal time or not displaying the operation key part 24, etc., for instance. Thus, erroneous judgement of the fault state by a driver or the like is dissolved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field relating to improvement of a control device for an electric component for controlling the operation of the electric component.

[0002]

2. Description of the Related Art Conventionally, a navigation system which provides a driver or the like with various traveling information such as a current position of a vehicle, a map around the vehicle, a traveling direction, and a destination is well known. As an example, for example, JP-A-61-2080
In Japanese Patent Laid-Open No. 75-75, a display device composed of a CRT (cathode ray tube or cathode ray tube) is arranged in an instrument panel, a console box or the like, and the various running information is displayed on the display screen of the display device. Has been done.

[0003]

By the way, in the vehicle,
In addition to the navigation device described above, for example, FM / AM
A tuner, a compact disc player, a cassette deck, an audio device including an equalizer device for adjusting frequency characteristics of music, or a television (video device), various electric components such as an air conditioner for conditioning the air inside the vehicle are installed. . And, usually, these electrical components are separated from other electrical components and mounted independently, and for example, an operating unit for switching the operating state of the electrical component and a display unit for displaying the operating state are provided for each unit. It is distributed.

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

Therefore, the above-mentioned conventional CRT is used.
Paying attention to the display device such as the above, by displaying the operation unit and its operating state of the various electrical components together on the same display screen of one display device including a CRT or the like, the operability is improved and the display is improved. It is possible to make it easier and reduce the installation space.

However, in that case, the following problems occur. That is, by operating the operation key section displayed as the operation key section on the display screen of the display device, the operation command signal is output to the electric component to control the electric component. Even if the operation key section on the display screen is operated, the operation by the operation key section may not be accepted. For example, in a navigation device, the entire map information is stored in a compact disc (CD-ROM), the map information corresponding to the current position of the vehicle is partially accessed in the compact disc, and the information of the compact disc is stored. If the vehicle 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 portion displayed on the display screen is operated, the signal cannot be accepted, and the user may be judged to be in a failure state.

The present invention has been made in view of the above circumstances, and an object thereof is to display an operation unit in an electric component such as an on-vehicle electric component as an operation key unit on a display screen of a display device as described above. In order to prevent the user from erroneously determining the operation unacceptable state of the operation key section as the failure state of the electrical component, the user can identify the operation unacceptable state of the operation key section. Is to

[0008]

In order to achieve the above-mentioned object, the solution means of the present invention is such that the operation key portion for controlling the electrical equipment displayed on the display screen of the display means is in the operation unacceptable state. In some cases, the fact is displayed on the same display screen.

That is, specifically, the structure of the present invention is as follows.
A display unit having a display screen for displaying an electrical component, an operation key unit for outputting an operation command signal to the electrical component, and a control unit for controlling the electrical component by operating the operation key unit on the display screen of the display unit. As a control device for electrical equipment, the control means cannot accept an operation of the operation key unit on the display screen when the operation of the operation key unit cannot be accepted. It is assumed that the state is configured to be displayed on the display screen.

As a result, if the operation key portion displayed on the display screen of the display means cannot be accepted by the operation key portion, the operation key portion is accepted on the same display screen. Since the operation unacceptable state indicating that it is impossible is displayed, it is possible to prevent the user from erroneously determining that the electrical component is in a failure state.

Specifically, when the operation of the operation key portion on the display screen of the display means cannot be accepted,
It is assumed that the electrical component accesses the CD-ROM to read the information stored in the CD-ROM. That is, this electrical component accesses the CD-ROM to access the CD
Since it takes time to read the information stored in the ROM, it becomes impossible to accept the operation of the operation key portion on the display screen during that time, and in this case, the above effect can be effectively obtained.

Preferably, the electric component is an on-vehicle electric component.
Alternatively, the electrical component is a navigation device.

Further, specifically, the operation unacceptable state of the operation key portion on the display screen is a state in which the operation key portion is not displayed on the display screen, or a state where a predetermined mark is displayed on the display screen. Alternatively, it is preferable that the background color is changed on the display screen.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION 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, in which 1 is an audio device mounted on a vehicle, and the audio device 1 is an FM / AM tuner 2 for inputting a music source, a cassette deck 3 and a compact. A disc player 4 (CD player) is provided. Further, 5 is a television, and 6 is an air conditioner (air conditioner). Further, 7 is a navigation device, which is not shown in the drawing, and the navigation device 7 includes, for example, a memory device for reading and storing map data stored in a compact disk (CD), and a geomagnetism for detecting the traveling direction of the vehicle. A display device to be described later, which includes a sensor and calculates data such as the current position of the vehicle by calculation 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-described devices 1 to 7 constitute an in-vehicle electrical component.

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

Reference numeral 8 is a control device for controlling the operation of the electric components 1 to 7, and the control device 8 is 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 continuously connected to the lower center of the instrument panel 12 at the front end of the vehicle compartment as shown in FIG. It is installed at the upper end of 13. In FIG. 2, 14 is a steering wheel,
15 is a driver's seat, 16 is a passenger seat, 17 and 18
Are the left and right doors, respectively.

The central processing unit 9 has the above electrical components 1 to 7.
Are connected so that signals can be sent and received, and each electrical component 1
Function key 19 for selecting and switching between ~ 7,
The output signals of 19, ... 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. Further, the display device 10 has a C value with respect to the central processing unit 9.
Signals are exchanged via the RT controller 20 and the video RAM 21, and the image processing data created by the central processing unit 9 is stored in the video RAM 21, and the CRT controller 20 stores the image processing data in the display unit 10 based on the stored data. An image is displayed on the display screen 11.

Further, the operation units for switching the functions of the electric components 1 to 7 and controlling the operating states of the electric components 1 to 7 are grouped according to the degree of operation demand. That is, in order to clearly hear the alarm sound of an emergency vehicle such as an ambulance or a patrol car, when the speaker volume of the audio device 1 is instantly lowered 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 while using other electric components, and for this purpose, the muting function for operating the muting function of the audio device 1 is used as the operation unit having a high operation demand degree. A temperature adjustment operation unit for operating the temperature adjustment function of the operation unit and the air conditioner 6 is set.

Then, as shown in FIG. 1, the operation part having a low operation request degree is displayed as operation key parts 24, 24, ... On the peripheral portion of the display screen 11 of the display device 10, while the operation request is made. The muting operation part and the temperature adjustment operation part, which have a high degree of accuracy, are provided on the console box 13 outside the display device 10, respectively, on the mute key 25 and the temperature adjustment key 2.
6 dedicated keys are provided. The mute key 25 and the temperature control key 26 are composed of ON / OFF type switches and are connected to a central processing unit as shown in FIG. 1. 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 display screen 11 of 0 in a close contact state. The touch sensor 22 has a plurality of linear transparent electrodes (not shown) arranged so as to intersect with each other in the horizontal direction and the vertical direction along the display screen 11, and a part of the transparent electrodes is provided. When touched with, the position of the contact portion is detected by the matrix signal. The output signal of the touch sensor 22 is processed by the decoder 23 and input to the central processing unit 9, and the operation key units 24 of the image displayed on the display screen 11 of the display unit 10 are displayed. When a push operation (contact operation) is performed on the touch sensor 22, a signal corresponding to the operation key portion 24 is detected by the touch sensor 22 and input to the central processing unit 9.

Now, 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 or not there is a signal input from the mute key 25 or the temperature adjustment key 26, that is, the dedicated key. If it is determined NO for "no input signal" here, the process proceeds to step S2, and it is determined 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, the determination is NO
In case of, the process directly returns to the first step S1. Also,
If 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 step S4
Then, it is determined whether or not the operation key portion 24 displayed on the display screen 11 has been turned on by contact.
Then, when this determination is NO, it is as it is, and when the determination is YES, the air conditioner 6 is moved to the display screen 1 in step S5.
After controlling the operating state according to the operation of the operation key unit 24 above 1, the process returns to the first step S1.

On the other hand, if the decision in step S1 is YES, "there is an input signal", the operation proceeds to step S6.
It is determined whether or not the mute key 25 has been operated. If this determination is YES, in step S7, the volume of the audio device 1 is reduced to a predetermined level and the muting system is activated. Further, when the determination is NO, the routine proceeds to step S8, where it is determined whether or not the temperature adjustment key 26 has been operated to the side where the adjustment temperature increases, and when the determination is YES here, the air conditioner 6 is instructed in step S9. When it is determined that the regulated temperature is on the rising side and NO is determined, the regulated temperature is adjusted to the lower side in step S10, and then the process returns to step S1.

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

When operating the muting function of the audio device 1 or operating the temperature adjusting function of the air conditioner 6, the mute key 25 or the mute key 25 provided on the console box 13 outside the display device 10 is used. The temperature control key 26 is pushed and operated. 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 to output the volume of the audio device 1. The temperature is lowered and the set temperature of the air conditioner 6 is adjusted.

At this time, while the electric components 1 to 7 are in operation, the operating state of the electric components 1 to 7 and the operation key portions 24, 24, ... Are simultaneously displayed on the display screen 11 of the display device 10. Therefore, the centralized display can improve the operability and facilitate the visual confirmation of the display of the operating state.

Moreover, the muting operation and air conditioner 6 for operating the muting function of the audio device 1
The temperature control operation for activating the temperature control function of the display device 1 has a high operation demand, and the operation unit having the high operation demand is the display device 1.
Since it is provided as a mute key 25 and a temperature adjustment key 26 on the external console box 13 separately from 0, other than the target audio device 1 or air conditioner 6 on the display screen 11 of the display device 10. Electrical components 2
Even if the operation key units 24 to 5 and 7 and their operating states are displayed, it is not necessary to sequentially search the image corresponding to the target audio device 1 or the air conditioner 6 on the display screen 11, The mute function of the audio device 1 or the temperature control function of the air conditioner 6 is operated based on the command signal of the dedicated key regardless of the display state on the display screen 11 simply by operating the mute key 25 or the temperature control key 26. The operation can be controlled, and thus the operability can be further improved.

The operation unit other than the mute key 25 or the temperature adjustment key 26, which has a low operation demand, is the display device 10.
Since it is displayed as the operation key unit 24 on the display screen 11 of, even if the number of the operation units is large, a large installation space is not required as in the case of arranging them on the instrument panel 12 or the like. It is possible to reduce the arrangement space of the operation unit.

In the above embodiment, the mute key 25 and the temperature control key 2 as dedicated keys with high operation demand are used.
Although 6 is arranged in the console box 13 corresponding to the lower side of the display screen 11 of the display device 10, it may be changed to another part. For example, it may be arranged on the instrument panel 12 remote from the display device 10. The point is that it may be arranged as a dedicated key outside the display screen 11 of the display device 10.

Further, in addition to the dedicated keys 25 and 26 as the operation section having a high degree of operation demand, when the function of the audio device 1 or the air conditioner 6 is selected, the display screen 11 of the display device 10 is displayed.
An operation key unit 24 for operating the muting function of the audio device 1 and the temperature adjusting function of the air conditioner 6
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-mentioned embodiment, but includes various other embodiments as shown below. The same parts as those in the above-mentioned embodiment are designated 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 key portions 24 (images in which the operation key portions 24 are 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
4, 24, ... Are grouped into a plurality of screens, and the screen of the operation key part 24 that is frequently used is preferentially displayed as the first screen. The screen of the operation key unit 24 for maniac operation is configured to be displayed after the second screen.

With this configuration, for example, in the case where a plurality of display screens are sequentially ordered regardless of the frequency of use and the screens are sequentially switched until the screen of the target operation key unit 24 is displayed, the operation key unit 24 is displayed. It does not take time to search for, and a menu screen that collectively displays a list of all screens is created, and the selection of the operation key section 24 is performed as in the case of selecting and displaying a target screen from the menu screens. There is no need to switch to the menu screen each time, 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) Further, the display screen 1 of the display device 10
Even if the operation key portion 24 displayed on the display 1 is operated, the operation key portion 24 may not be operated. For example, in the navigation device 7, when the entire map information is stored in a compact disc 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 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, the display screen 11
Even if the operation key unit 24 displayed on the screen is operated, the signal cannot be accepted, and the driver or the like may be judged to be in a failure state.

At this time, for example, the "CD" mark is displayed on the display screen 11, the background color of the display screen 11 is changed from the normal color, and the operation key section 24 is not displayed. The display screen 11 is configured to display a message indicating that the operation of the operation key unit 24 cannot be accepted.
By doing so, it is possible to prevent the driver or the like from making a mistaken determination as a failure state.

(3) On the display screen 11 of the display device 10, the contents of various instruction manuals are displayed in order like a picture-story show with the images of the handling state and the operation key portion 24, and the contents are notified by voice. You may do it. Examples of this handling instruction include a vehicle start-up inspection, tire chain attachment / detachment, tire replacement, and the like.

For example, when explaining a method of mounting a tire chain on a vehicle tire, as shown in FIG. 5, a plurality of screens showing the respective steps of the tire chain mounting procedure are made and the plurality of screens are mounted. It is displayed on the display screen 11 in order according to the procedure, and a mounting operation method corresponding to the display state of each screen is notified by a voice message. That is, as shown in FIG. 5 (a), when the operation step of setting the chain on the tire is displayed on the display screen 11, the message "Set the chain according to the tire" is displayed again. Figure (b)
As shown in, when the step of putting the chain on the tire is displayed, "Please put the chain on the tire."
When the operation stage of winding the chain around the tire is displayed as shown in FIG. 7C, the message "Please wind the chain around the tire" is output.

Further, in each screen, the previous page key section 24 '
a, the stop key section 24'b, the next page key section 24'c and the operation key section of the menu key section 24'd are also displayed together. For example, in the screen shown in FIG. a
When is operated, the screen returns to the screen showing the previous stage of the mounting procedure as shown in FIG. 9A, 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. Further, when the stop key portion 24'b is operated, the display of the screen is continued as shown in FIG. 7D, and the repeat key portion 2 is used instead of the stop key portion 24b.
Display 4'e. Then, the repeat key portion 24 '
When e is operated, the other key portions 24'a, 24 '
The notification by the voice corresponding to the screen is repeated until c, 24'd is operated. In addition, the menu key section 2
When 4'd is operated, regardless of the display order, as shown in (e) in the figure, the menu screen displaying a list of the entire contents of a plurality of instruction manuals including the method for mounting the tire chain is displayed. Has been done.

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

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 required procedure among the handling procedures and to know its contents accurately, thereby improving the usability. You can

(4) Further, in the embodiment shown in FIG.
In the case where the FM / AM tuner 2 of the audio device 1 is provided with a so-called auto-preset function that automatically detects and stores all the receivable broadcasting stations at the radio wave reception point of the vehicle, after completion of the auto-preset, A list of all currently receivable broadcasting stations together with their frequencies is displayed on the display screen 11.

That is, on the display screen 11 of the display device 10, the names of a plurality of receivable broadcasting stations are displayed together with their frequencies, and the broadcasting station currently being received among them is displayed with a predetermined identification (Fig. The frame is displayed) so that the driver etc. can be distinguished from other broadcasting stations. In addition, the display screen 11
A channel selection key section 24 'is also displayed on the upper side, and the channel selection key section 24' is operated to move the identification display (frame display) during reception to another station, thereby It is configured to change the broadcasting station and select a station.

With this configuration, the driver etc. can list the information of all receivable broadcasting stations on the display screen,
It is possible to perform so-called one-shot tuning in which the broadcasting station to be received from the information on the display screen 11 is immediately tuned without the trouble of listening to the broadcasting of those broadcasting stations in order and tuning. It is possible to improve the usability of the FM / AM tuner 2 and thus the audio device 1.

(5) In the embodiment shown in FIG. 7, a so-called graphic equalizer that visually adjusts the output frequency characteristic of the audio device 1 has its output frequency characteristic set in advance for each type of music and 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 sections 24 ', 24', ...
Is displayed and one of them is operated and selected, the selected selection key portion 24 'is identified and the audio device 1
The frequency characteristic of is set to the frequency characteristic of the music corresponding to the selection key section 24 ', and the frequency characteristic of the setting is also displayed on the display screen 11.

Therefore, in this case, since the type of the selected music and its frequency characteristic are simultaneously displayed on the display screen 11, it is possible to easily grasp the frequency characteristic of the selected music.

(6) Further, in the apparatus shown in FIG. 8, the operation and operating state of the tone control for changing the characteristics of the high and low tones of the audio device 1 are displayed together.

That is, in the display screen 11 of the display device 10, a bass control key section 24'f for increasing / decreasing the bass characteristic level of tone control, a bass characteristic level display section 27 showing the actual bass characteristic level thereof, Treble control key section 2 to increase or decrease the treble characteristic level
4'g and the treble characteristic level display section 28 showing the actual treble characteristic level are displayed, and the bass control key section 2
By operating 4'f, the bass characteristic level of the tone control is increased / 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 or decreased and the corrected actual treble characteristic level is displayed on the treble characteristic level display section 28. .

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

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

That is, in this embodiment, as shown in FIG.
On the display screen 11 of the display device 10, as shown in FIG.
Fast-return key part 24'h, pause key part 2 for pause
4'i and a plurality of operation key portions of the skip key portion 24'j and the current operating state of the compact disc player 4,
For example, a selection mode such as a play mode, a fast-forward mode, a fast-rewind mode, a random mode (a play mode “PLAY” is displayed in the figure, which indicates that the play is being performed), the total number of songs stored on the compact disc, and the number of the playable tracks. The number of tracks indicating the order of the tunes to be played, the playing completion time of the tune being played, the remaining time, the remaining time of the whole, and the like are displayed on the operating state display unit 29. And this Figure 9
In the state shown in (a), for example, when the fast-forward section of the fast-forward / fast-reverse key section 24'h is operated, the compact disc player 4 is switched to the fast-forward mode accordingly, and as shown in FIG. 9 (b). The operation state display section 29 is changed and displayed in the fast-forward mode "FF", and at the same time,
The number of tracks and the time 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. In addition, the operation key unit 2
4'h to 24'j and the operating state are displayed on the same screen, and the change in the operating state accompanying the operation of the operation key portions 24'h to 24'j is instantly displayed, so that the compact disc player 4 It becomes easy to understand the reaction after the operation. Further, the operation key section 24 'is displayed on the display screen 11.
Since h to 24'j are displayed, the operation key section 24 '
There is no limit to the number of settings from h to 24'j, and the function of the compact disc player 4 is not restricted.

[0053]

As described above, according to the present invention,
In the case of displaying the operation key section for outputting an operation command signal to the electric component on the display screen of the display means and controlling the electric component by operating the operation key section on the display screen,
When the operation of the operation key unit on the display screen cannot be accepted, an operation unacceptable state indicating that the operation of the operation key unit cannot be accepted is displayed. Even if you operate the operation key section displayed on the screen, if the operation key section cannot accept the operation, the operation key section displayed on the same display screen cannot accept the operation It is possible to prevent the erroneous judgment of.

Further, since it takes time when the electrical component accesses the CD-ROM to read the information stored in the CD-ROM, this state is accepted by the operation key portion on the display screen. If it is impossible, the above effect can be effectively obtained.

[Brief description of 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 according to an embodiment of the present invention.

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

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

FIG. 4 is a flowchart showing a control procedure processed 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 the display screen at the time of automatic presetting by the 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 during tone control.

FIG. 9 is an explanatory diagram showing a display state on the display screen during operation of the compact disc device.

[Explanation of symbols]

 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 Part 25 Mute Key 26 Temperature control key

Claims (7)

[Claims] 1. An electric component, a display unit having a display screen for displaying an operation key unit for outputting an operation command signal to the electric component, and an electric component by operating the operation key unit on the display screen of the display unit. A control device for electrical equipment, comprising: a control means for controlling, wherein the control means cannot accept an operation of the operation key portion when the operation key portion on the display screen cannot be accepted. A control device for electrical equipment, which is configured to display an operation unacceptable state indicating that there is something on a display screen. 2. The control device for an electric component according to claim 1, wherein when the operation key portion on the display screen cannot accept the operation, the electric component accesses the CD-ROM to access the CD-R.
A control device for electrical equipment that is in a state of reading information stored in the OM. 3. The control device for an electrical component according to claim 1, wherein the electrical component is an in-vehicle electrical component. 4. The control device for an electric component according to claim 1, 2, or 3, wherein the electric component is a navigation device. 5. The control device for an electric component according to claim 1, 2, 3 or 4, wherein the operation unacceptable state is a state in which the operation key portion is not displayed on the display screen. 6. The control device for electrical equipment according to claim 1, 2, 3 or 4, wherein the operation unacceptable state is a state in which a predetermined mark is displayed on the display screen. 7. The control device for an electrical component according to claim 1, 2, 3 or 4, wherein the operation unacceptable state is a state in which the background color is changed on the display screen.