KR102428615B1 - Apparatus and method for controlling input device of vehicle - Google Patents

Abstract

In the present invention, one input device is connected to a plurality of vehicle devices, and when a specific vehicle device is to be controlled, a specific vehicle device is selected from among a plurality of vehicle devices by using an inverter element and a switching device to communicate with the input device. We propose an apparatus and method for controlling an input device for a vehicle. An apparatus according to the present invention includes: a selection signal acquisition unit configured to acquire a signal for selecting a control target from among vehicle devices; a control target connection unit for communicatively connecting input devices connected to vehicle devices to only the control target based on a signal for selecting a control target; and a control target display unit for displaying a control target.

Description

Apparatus and method for controlling input device of vehicle}

The present invention relates to an apparatus and method for controlling an input device. More particularly, it relates to an apparatus and method for controlling an input device for inputting a signal for controlling a vehicle device.

Conventionally, there is only a difference in whether the H/U (Head Unit) and the keyboard module have a structure in which they are combined with each other or a structure in which they are separated. We have taken the method of performing the function of the corresponding key by utilizing each keyboard.

In the case of the prior art, although the car audio H/U and the air conditioning H/U are located in the center of the front part of the vehicle and are located close to each other, the cost increases and the space in the front part of the vehicle is increased by configuring the H/U keyboard individually. Problems such as

Korean Patent No. 153,236 proposes a keyboard mounted on a vehicle. However, since the keyboard is only a means for controlling only the navigation device mounted on the vehicle, the above problem cannot be solved.

The present invention has been devised to solve the above problems, and when one input device is connected to a plurality of vehicle devices and a specific vehicle device is to be controlled, a specific vehicle device is connected to a plurality of devices using an inverter device and a switching device. An object of the present invention is to propose an apparatus and method for controlling an input device for a vehicle that selects from among vehicle devices and communicates with the input device.

However, the object of the present invention is not limited to the above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

The present invention has been devised to achieve the above object, comprising: a selection signal acquisition unit for acquiring a signal for selecting a control target from among vehicle devices; a control target connection unit for communicatively connecting input devices connected to the vehicle devices only to the control target based on a signal for selecting the control target; and a control target display unit for displaying the control target.

Preferably, when the number of the vehicle devices is two, the control target connection unit communicatively connects the input device to only the control target using an inverter element.

Preferably, the control target connection unit uses an unbuffered inverter IC as the inverter element.

Preferably, the control target connection unit communicatively connects the input device to only the control target using switching elements located on a communication line connecting each vehicle device and the input device.

Preferably, the control target connection unit uses transistors as the switching elements.

Preferably, the control target display unit displays the control target using a lamp associated with each vehicle device.

Preferably, the control target display unit is formed on one side of the input device and blinks every predetermined time to display the control target.

Preferably, devices located within a predetermined range and controlling a key value with an analog digital converter (ADC) correspond to the vehicle devices.

Preferably, the vehicle input device control device is mounted on a dual keyboard for controlling the car audio unit and the air conditioning unit mounted on the vehicle.

In another aspect, the present invention comprises the steps of: obtaining a signal for selecting a control target from among vehicle devices; communicating input devices connected to the vehicle devices only to the control target based on a signal for selecting the control target; and displaying the control target.

Preferably, in the connecting step, when the number of the vehicle devices is two, the input device is communicatively connected only to the control target using an inverter element.

Preferably, the connecting step uses an unbuffered inverter IC (Unbuffered inverter IC) as the inverter element.

Preferably, in the connecting step, the input device is communicatively connected only to the control target using switching elements located on a communication line connecting each vehicle device and the input device.

Preferably, the connecting step uses transistors as the switching elements.

Preferably, in the displaying, the control target is displayed using a lamp associated with each vehicle device.

Preferably, the displaying step is formed on one side of the input device and blinks every predetermined time to display the control target.

Preferably, devices located within a predetermined range and controlling a key value with an analog digital converter (ADC) correspond to the vehicle devices.

Preferably, the vehicle input device control method is performed by a device mounted on a dual keyboard for controlling a car audio unit mounted on a vehicle and an air conditioning unit.

The present invention can obtain the following effects through the configurations for achieving the above object.

First, by using an unbuffered inverter IC (Unbuffered Inverter IC) as an inverter element, it is easy to flexibly change the circuit even in a change situation such as an increase in the number of key buttons.

Second, by integrating and operating two keyboards into one keyboard, it is possible to reduce a significant amount of parts such as button switches.

Third, it is possible to secure significant cost savings by integrating and operating two keyboards into one keyboard.

Fourth, by integrating the space occupied by two keyboards into one keyboard, the space occupied by the keyboard can be naturally reduced, which has the advantage of securing space.

1 is a conceptual diagram illustrating a connection state between a dual keyboard and each H/U.
2 is a diagram illustrating an appearance of a dual keyboard when it is in a specific operation mode.
3 is a conceptual diagram illustrating an internal circuit of a dual keyboard according to an embodiment of the present invention.
4 is a reference diagram for explaining a non-buffering inverter IC constituting a dual keyboard internal circuit.
5 is an internal configuration diagram of a common key circuit block constituting a dual keyboard internal circuit.
6 is an internal configuration diagram of two LEDs constituting a dual keyboard internal circuit.
7 is a flowchart illustrating a method of operating a dual keyboard internal circuit according to an embodiment of the present invention.
8 is a block diagram schematically illustrating an apparatus for controlling an input device for a vehicle according to a preferred embodiment of the present invention.
9 is a flowchart schematically illustrating a method for controlling an input device for a vehicle according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, preferred embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto or may be variously implemented by those skilled in the art without being limited thereto.

As automobiles become more common, user satisfaction improvement has become an important factor. Among them, the importance of the air conditioning unit for controlling the in-vehicle environment and the car audio unit (eg, AVN system, audio system, etc.) providing additional functions for users in the vehicle is also increasing. As reflected in this, the car audio unit and the air conditioning unit are located in the center of the front of the vehicle so that users can use it easily.

In this way, focusing on the locational advantage between the car audio unit and the air conditioning unit, which are located in the center of the front of the vehicle, and the common point of controlling the key value through the ADC (Analog Digital Converting) method, it is possible to reduce costs and increase space utilization. We want to design a dual keyboard with advantages.

In particular, we would like to propose a dual keyboard that is designed by utilizing an unbuffered inverter IC (Unbuffered Inverter IC) to be more reliable and flexible.

Hereinafter, a car audio system and an air conditioning dual keyboard using a non-buffering inverter IC will be described with reference to the drawings.

1 is a conceptual diagram illustrating a connection state between a dual keyboard and each H/U (Head Unit).

The present invention utilizes the advantage of the distance between the car audio H/U 110 and the air conditioning H/U 120 located in the center of the front of the vehicle, and each H/U (110, 120) is connected through the ADC method. Rather than designing separate keyboards by utilizing the commonality of applying the key values of the keyboard (that is, both car audio and air conditioning take the ADC method to determine the key value by reading the level when the key is pressed), By designing a common dual keyboard module 130 that can be utilized by both H/Us 110 and 120, to achieve the effect of reducing the number of parts and reducing costs, as well as increasing the space utilization of the interior of the vehicle. do.

In addition, in order to improve the problems such as diversification of the number of key buttons that may occur due to the characteristics of the dual keyboard and duplication of keyboard module use between two units, a more reliable and easy-to-change module is proposed by using a non-buffering inverter IC.

In the case of the dual keyboard module 130, externally, as shown in FIG. 1 , there are two connectors (ie, connector 1 ( 131 ) and connector 2 ( 132 ) that can be externally connected). and is used to connect the car audio H/U 110 and the air conditioning H/U 120, respectively.

In this way, the dual keyboard module 130 operates only as a keyboard of one H/U through mode selection in a state in which both H/Us 110 and 120 are connected.

2 is a diagram illustrating an appearance of a dual keyboard when it is in a specific operation mode.

2 is a view showing the appearance of the dual keyboard in the car audio keyboard operation mode (see FIG. 2 (a)) and in the air-conditioning keyboard operation mode (see FIG. 2 (b)).

In each operation mode, the corresponding keyboard LED in the active mode is turned on, and the corresponding keyboard LED in the inactive mode is turned off. For example, referring to Figure 2 (a), the keyboard in the active mode is a car audio keyboard and the keyboard in the inactive mode is an air-conditioning keyboard, so the car audio keyboard LED 210 is turned on and the air-conditioning keyboard LED 230 is turned off. . On the other hand, referring to Figure 2 (b), the keyboard in the active mode is an air-conditioning keyboard and the keyboard in the inactive mode is a car audio keyboard, so the air-conditioning keyboard LED 230 is turned on and the car audio keyboard LED 210 is turned off. .

As can be seen from the external appearance of Figure 2, the buttons 220 of the car audio and the air conditioning keyboard are the same, but the location of the NAME part of the KEY is divided into two (210, 230) per button 220 (one car audio function key) , 1 key for air conditioning) and LEDs are separated so that each can be turned on.

3 is a conceptual diagram illustrating an internal circuit of a dual keyboard according to an embodiment of the present invention. And FIG. 4 is a reference diagram for explaining a non-buffering inverter IC constituting a dual keyboard internal circuit. The following description refers to FIGS. 3 and 4 .

Both the car audio H/U 110 and the air conditioning H/U 120 are connected to the dual keyboard module 130 through an external connection.

Each H/U data line input from the outside is connected to an unbuffered inverter IC (IC) 340 . Here, the car audio H/U 110 data line is set as an input, and the air conditioning H/U 120 data line is set as an output.

On the other hand, in the present invention, it is also possible to set the air conditioning H/U (120) data line as an input, and set the car audio H/U (110) data line as an output, on the contrary.

The data lines of the car audio H/U 110 and the air conditioning H/U 120 are configured as shown in (a) of FIG. 4 .

As shown in (b) of FIG. 4 like the principle of the inverter, when the data line side of the car audio H/U 110 is High, the data line side of the air conditioning H/U 120 becomes Low. Conversely, when the data line side of the car audio H/U 110 is Low, the data line side of the H/U 120 of the air conditioning becomes High.

In the present invention, whether the car audio H/U 110 data line is set to High or Low can be implemented in conjunction with a separate circuit that allows the customer to switch the mode through a button or switch.

Each H/U (110, 120) data line having such a logic level passes through each TR (ie, TR1 (320) and TR2 (330)), and then a common key (KEY) circuit block ( 350) is connected. The common key circuit block 350 determines a key value in an ADC method.

If the logic level is High, the TR1 320 for switching the car audio H/U 110 and the common key circuit block 350 is turned on. Then, the car audio H/U 110 and the common key circuit block 350 are electrically connected to each other, and the car audio keyboard mode LED 360 is turned on. On the other hand, TR2 (330) for switching the H/U (120) and the common key circuit block (350) is turned off. Then, the air conditioning H/U 120 and the common key circuit block 350 are not interconnected, and the air conditioning keyboard mode LED 310 is turned off.

On the other hand, when the logic level is Low, the TR2 330 for switching the H/U 120 and the common key circuit block 350 is turned on. Then, the air conditioning H/U 120 and the common key circuit block 350 are electrically connected to each other, and the air conditioning keyboard mode LED 310 is turned on. On the other hand, TR1 (320) for switching the car audio H/U (110) and the common key circuit block (350) is turned off. Then, the car audio H/U 110 and the common key circuit block 350 are not interconnected, and the car audio keyboard mode LED 360 is turned off.

In the case of the air conditioning/car audio dual keyboard module 130, both modes cannot be applied at the same time, and both modes cannot be applied. Therefore, using the principle of the inverter, if the input is High, the output must be Low, and when the input is Low, the output must be set to High. That is, the inverter is used to prevent the case where both are high or both are low.

As a result, the H/U whose logic level is set to High and the common key circuit block 350 are connected to each other and serve as a keyboard of the corresponding H/U.

In the case of the button LED lighting circuit diagram, it is connected to the car audio H/U (110) and air conditioning H/U (120) data lines, respectively, and the corresponding LED lighting circuit is On or Off depending on whether the logic level of the corresponding data line is High or Low. will decide

Meanwhile, in the present invention, as shown in FIGS. 3 and 4 , the non-buffering inverter IC is applied to a position where an inverter may be used. The reason for this is as follows.

I had to select one of the data lines of the car audio H/U 110 and the air conditioning H/U 120, so I used an inverter. to increase the width.

In the case of an ADC-type keyboard, each button range is set, and based on this, the voltage level is read and the corresponding key value is set. Therefore, if a simple inverter element is used, if the number of key buttons increases, an inverter element must be added accordingly. Flexible response is possible because additional A213 circuits can be configured using

5 is an internal configuration diagram of a common key circuit block constituting a dual keyboard internal circuit.

5 shows an internal circuit diagram of the common key circuit block 350, SW1, SW2, SW3, SW4, SW5, ... , SWn corresponds to each block composed of a car audio keyboard LED 210, an air conditioning keyboard LED 230 and a button 220 for controlling the two in FIG. 2 . The common key circuit block 350 of FIG. 5 determines a key value in the ADC method as described above.

6 is an internal configuration diagram of two LEDs constituting a dual keyboard internal circuit.

Figure 6 shows the LED circuit diagram for each air conditioning and car audio keyboard mode, Figure 6 (a) shows the car audio button LED lighting circuit diagram, Figure 6 (b) shows the air conditioning button LED lighting circuit diagram.

Both the air conditioning and the car audio have the same LED lighting circuit diagram configuration, but the characteristic is that each circuit diagram must exist. In FIG. 6(a), RO0, RO1, RO2, RO3, RO4, RO5, ... , ROn (or DO0, DO1, DO2, DO3, DO4, DO5, ..., DOn) is composed of a car audio keyboard LED 210, an air conditioning keyboard LED 230, and a button 220 for controlling the two in FIG. corresponding to each block. Also, in FIG. 6(b), RO0', RO1', RO2', RO3', RO4', RO5', ... , ROn' (or DO0', DO1', DO2', DO3', DO4', DO5', ..., DOn') also shows the car audio keyboard LED 210, the air conditioning keyboard LED 230 and these two in FIG. It corresponds to each block composed of buttons 220 to control.

7 is a flowchart illustrating a method of operating a dual keyboard internal circuit according to an embodiment of the present invention. The description of the algorithm of FIG. 7 is as follows.

When the user selects which H/U to control between the car audio H/U 110 and the air conditioning H/U 120 using a button or a switch (S405), the non-buffering inverter IC 340 returns this value to set a logic value (S410).

When the non-buffering inverter IC 340 sets the logic value to High (that is, when the input is High based on the logic value), the car audio keyboard mode LED (that is, the button LED for car audio) 360 lights up and the air conditioning keyboard The mode LED (ie, button LED for air conditioning) 310 is turned off (S415).

After that, TR1 (320) for switching the car audio H / U 110 and the common key circuit block 350 is turned on (Turn On) and switching the air conditioning H / U 120 and the common key circuit block 350 TR2 (330) is turned off (Turn Off) (S420).

Thereafter, the common key circuit block 350 operates as a car audio keyboard for controlling the car audio H/U 110 ( S425 ).

On the other hand, when the non-buffering inverter IC 340 sets the logic value to Low (that is, when the input is Low based on the logic value), the car audio keyboard mode LED (that is, the button LED for the car audio) 360 is turned off and the air conditioner is turned off. The keyboard mode LED (ie, button LED for air conditioning) 310 is turned on (S430).

TR1 (320) for switching the car audio H / U 110 and the common key circuit block 350 is then turned off (Turn Off) and switching the air conditioning H / U 120 and the common key circuit block 350 TR2 (330) is turned on (Turn On) (S435).

Thereafter, the common key circuit block 350 operates as an air-conditioning keyboard for controlling the air-conditioning H/U 120 (S440).

The greatest advantage of the present invention can be said to be cost reduction, space reduction of the keyboard, and reliability of functions.

First, by integrating two keyboards into one keyboard, the number of parts can be reduced, two PCBs can be reduced into one PCB, and two devices can be reduced into one device, resulting in significant cost savings. .

In addition, by integrating the space occupied by two keyboards into one keyboard, the space occupied by the keyboard can be naturally reduced, which has the advantage of securing space.

Lastly, in the case of the dual keyboard, problems such as the simultaneous use of two H/Us can be prevented in advance through the non-buffering inverter IC, thereby securing the reliability of the function and using an IC rather than a simple inverter device. By doing so, it is easy to flexibly change the circuit in the future even in a change situation such as an increase in the number of buttons.

An embodiment of the present invention has been described above with reference to FIGS. 1 to 7 . Hereinafter, a preferred embodiment of the present invention that can be inferred from such one embodiment will be described.

8 is a block diagram schematically illustrating an apparatus for controlling an input device for a vehicle according to a preferred embodiment of the present invention.

Referring to FIG. 8 , the vehicle input device control apparatus 500 includes a selection signal obtaining unit 510 , a control target connection unit 520 , a control target display unit 530 , a power supply unit 540 , and a main control unit 550 . The vehicle input device control device 500 is a concept corresponding to the dual keyboard internal circuit 130 of FIG. 3 .

The power supply unit 540 performs a function of supplying power to each component constituting the vehicle input device control device 500 . The main control unit 550 performs a function of controlling the overall operation of each component constituting the vehicle input device control device 500 . Considering that the vehicle input device control device 500 is mounted on a vehicle to function as an input device for inputting signals for controlling a plurality of vehicle devices, the power supply unit 540 and the main control unit 550 are not provided in this embodiment. free of charge

The selection signal acquisition unit 510 performs a function of acquiring a signal for selecting a control target from among vehicle devices.

The control target connection unit 520 performs a function of communicatively connecting the input device connected to the vehicle devices only to the control target based on the signal for selecting the control target obtained by the selection signal obtaining unit 510 . The control target connection unit 520 is a concept corresponding to the combined configuration of the non-buffering inverter IC 340 , TR1 320 , and TR2 330 of FIG. 3 .

In the above, the input device inputs a signal for controlling the vehicle device, and is connected to a plurality of vehicle devices. Such an input device may be implemented as, for example, a dual keyboard, a multi-keyboard, or the like.

When the number of vehicle devices is two, the control target connection unit 520 may connect the input device to only the control target by using an inverter element. In this case, the control target connection unit 520 may use an unbuffered inverter IC as an inverter element.

The control target connection unit 520 may connect the input device to the control target only by using switching elements positioned on a communication line connecting each vehicle device and the input device. In this case, the control target connection unit 520 may use transistors as switching elements.

The control target display unit 530 performs a function of displaying a control target. The control target display unit 530 is a concept corresponding to the car audio keyboard mode LED 360 and the air conditioning keyboard mode LED 310 of FIG. 3 .

The control target display unit 530 may display a control target using a lamp related to each vehicle device.

The control target display unit 530 may display a control target using a lamp having a turn on/off function. The control target display unit 530 preferably includes all of the lamps related to each vehicle device so that the user can easily check which vehicle device is connected to the input device.

The control target display unit 530 may be formed on one side of the input device and may display a control target by blinking every predetermined time.

The control target display unit 530 is preferably formed on the front side of the input device so that the user can easily check the on/off. In addition, the control target display unit 530 may display the control target by using a blinking function in order to increase the recognition rate of the user.

Devices located within a predetermined range and controlling a key value with an analog digital converter (ADC) may correspond to the vehicle devices described above. The vehicle input device control device 500 may use, for example, a car audio unit and an air conditioning unit as vehicle devices.

The vehicle input device control device 500 may be mounted on a dual keyboard for controlling the car audio unit and the air conditioning unit mounted on the vehicle.

Next, a method of operating the vehicle input device control device 500 will be described. 9 is a flowchart schematically illustrating a method for controlling an input device for a vehicle according to a preferred embodiment of the present invention.

First, the selection signal acquisition unit 510 acquires a signal for selecting a control target from among vehicle devices (S610).

Thereafter, the control target connection unit 520 connects the input device connected to the vehicle devices only to the control target based on the signal for selecting the control target ( S620 ).

Then, the control target display unit 530 displays the control target (S630).

The control target display unit 530 displays the control target at the same time when the control target connection unit 520 performs the above-described function (that is, performs step S630 and at the same time as step S620), or the control target connection unit 520 performs the above function It is also possible to display the control target before performing (that is, it is also possible to perform step S630 before step S620).

Even if all the components constituting the embodiment of the present invention described above are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, although all of the components may be implemented as one independent hardware, some or all of the components are selectively combined to perform some or all functions of the combined components in one or a plurality of hardware program modules It may be implemented as a computer program having In addition, such a computer program is stored in a computer readable media such as a USB memory, a CD disk, a flash memory, etc., read and executed by the computer, thereby implementing the embodiment of the present invention. The computer program recording medium may include a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like.

In addition, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined in the detailed description. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes and substitutions are possible within the scope that does not depart from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explanation rather than limiting the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings. . The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (10)

a selection signal acquisition unit configured to acquire a signal for selecting a control target from among vehicle devices;
a control target connection unit for communicatively connecting input devices connected to the vehicle devices only to the control target based on a signal for selecting the control target; and
Control target display unit for displaying the control target
A vehicle input device control device comprising a. The method of claim 1,
and the control target connection unit communicatively connects the input device to only the control target using an inverter element when the number of the vehicle devices is two. 3. The method of claim 2,
The control target connection unit for a vehicle input device, characterized in that using an unbuffered inverter IC (Unbuffered inverter IC) as the inverter element. The method of claim 1,
and the control target connection unit connects the input device to the control target only by using switching elements positioned on a communication line connecting each vehicle device and the input device. 5. The method of claim 4,
and the control target connection unit uses transistors as the switching elements. The method of claim 1,
and the control target display unit displays the control target by using a lamp associated with each vehicle device. 7. The method of claim 6,
The control target display unit is formed on one side of the input device and blinks every predetermined time to display the control target. The method of claim 1,
Device for controlling a key value with an analog digital converter (ADC) located within a predetermined range corresponds to the vehicle device. The method of claim 1,
The vehicle input device control device is a vehicle input device control device, characterized in that mounted on a dual keyboard for controlling the car audio unit and the air conditioning unit mounted on the vehicle. obtaining a signal for selecting a control target from among vehicle devices;
communicating input devices connected to the vehicle devices only to the control target based on a signal for selecting the control target; and
displaying the control target
A vehicle input device control method comprising a.

Images