JP2014092894A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input device capable of increasing the user-friendliness of a touch panel according to the travelling situations.SOLUTION: A navigation device 1 includes: a CPU 2; an input unit 3; an interface 4; a sensor 5; a storage 6; a ROM 7; a RAM 8; a display section 9; a voice output control unit 10; a voice output unit 11; and a bus line 12. The navigation device 1 is configured so that the detection sensitivity of a touch input detection section is automatically adjusted based on the speed detected by a vehicle speed detection section.

Description

  The present invention relates to a display device using, for example, a capacitance type or a field effect type touch panel.

  As an operation unit of an electronic device, a display device such as an electrostatic touch panel or an electrostatic switch that performs an input operation by detecting a change in capacitance due to the approach of an object such as a human finger may be used.

  In addition, there is a device that detects a vehicle speed pulse and, when the vehicle traveling speed becomes high, narrows down the operation content of the display device and changes the icon display mode to prevent erroneous operation (see, for example, Patent Document 1). ).

JP 2009-90690 A

  However, the conventional technique only changes the display mode in a specific mode such as menu or audio, and there is a problem that only preset items can be operated. Also, if you want to scroll to the desired position on the map screen using conventional technology, you can change the display mode of the icon to perform the map display, but it can not improve the operability of the scroll operation There was a problem.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an input device that improves the operability of a touch panel according to traveling conditions.

  In order to achieve the above object, a display device of the present invention is a display device that can perform touch input, a touch input detection unit that detects the touch input, a vehicle speed detection unit that detects a vehicle speed, and the like. And a detection sensitivity adjustment unit that adjusts the detection sensitivity of the touch input detection unit based on the speed detected by the vehicle speed detection unit.

  The display device of the present invention is a display device that can perform touch input and includes map data, a touch input detection unit that detects the touch input, a current position detection unit that detects a current position, The road attribute search unit that searches the map data for the road attribute at the current position detected by the current position detection unit, and the detection sensitivity of the touch input detection unit is adjusted based on the road attribute searched by the road attribute search unit And a detection sensitivity adjustment unit.

  The detection sensitivity adjustment unit of the display device of the present invention calculates a speed from a displacement of the current position detected from the current position detection unit, and detects using the road attribute and the speed searched by the road attribute search unit. It is characterized by adjusting the sensitivity.

  The display device of the present invention further includes a vehicle speed detection unit that detects a vehicle speed, and the detection sensitivity adjustment unit includes a speed detected by the vehicle speed detection unit and a road attribute searched by the road attribute search unit. Is used to adjust the detection sensitivity.

  The detection sensitivity adjusting unit of the display device of the present invention is characterized in that the detection sensitivity is automatically changed stepwise based on the speed.

  According to the present invention, since the sensitivity of the touch panel is automatically changed according to the driving situation, the optimum touch panel operation according to the moving speed can be performed.

  According to the present invention, it is a display device capable of performing touch input, and is configured to be able to automatically adjust the detection sensitivity of the touch input detection unit based on the speed detected by the vehicle speed detection unit. ing.

  According to the present invention, a display device capable of performing touch input, which searches for road attributes stored in map data using current position information detected by a current position detection unit, It is comprised so that the detection sensitivity of a touch input detection part can be adjusted according to a division attribute.

  According to the present invention, the speed per unit time is calculated from the displacement of the current position detected from the current position detection unit, and the detection sensitivity adjustment unit using the calculated speed and the road attribute searched by the road attribute search unit The detection sensitivity can be adjusted to the optimum detection sensitivity. For example, if the road attribute of the current position is searched as an expressway and the speed is slow due to traffic jams, etc., the detection sensitivity associated with the expressway attribute is not changed even if the road attribute is an expressway. It is configured as follows.

  According to the present invention, the speed detected from the vehicle speed detection unit and the road attribute searched by the road attribute search unit can be used to adjust to the optimum detection sensitivity that matches the current position and speed conditions. ing. For example, if the road attribute of the current position is searched as an expressway and the speed is slow due to traffic jams, etc., the detection sensitivity associated with the expressway attribute is not changed even if the road attribute is an expressway. It is configured as follows.

  According to the present invention, the detection sensitivity can be automatically changed stepwise according to the detected speed. Thereby, for example, when traveling from a general road to a highway, the detection sensitivity can be automatically changed stepwise according to the speed.

Block diagram of navigation device in embodiment (A) is a block diagram showing a configuration of a CPU, (b) is a block diagram showing a configuration of a touch panel control unit. Schematic diagram showing each mode corresponding to the vehicle speed The flowchart which shows operation | movement of the navigation apparatus in embodiment Schematic diagram showing the relationship between vehicle speed and mode Flow chart showing the operation of the second embodiment The block diagram which shows the structure of CPU in 3rd Embodiment. Flow chart showing processing in the third embodiment Flow chart showing processing in the fourth embodiment

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram illustrating a hardware configuration example of a display device according to an embodiment of the present invention.

  This display device is provided in the navigation device 1 as an electronic device, for example.

  As shown in FIG. 1, the navigation device 1 includes a CPU (Central Processing Unit) 2, an input unit 3, an interface 4, a sensor unit 5, a storage unit 6, a ROM (Read Only Memory) 7, and a RAM. (Random Access Memory) 8, a display unit 9, an audio output control unit 10, an audio output unit 11, and a bus line 12.

  The CPU 2 controls the operations of various programs and has functions for performing various calculations and controls, and the CPU 2 is configured to be able to control the operations of the respective parts constituting the navigation device 1. . The details of the CPU 2 will be described with reference to a separate drawing.

  The input unit 3 includes a touch panel control unit 3a and a capacitance type (or field effect type) touch panel 3b. For example, a touch panel or a remote controller is used for user operation or data input to the navigation device 1. It is configured so that it can be used.

Here, the touch panel control unit 3a is configured to detect the amount of change in the capacitance of the touch panel 3b and to output to the CPU 2 that the touch has been detected when the touch detection value exceeds the set touch detection value. Note that the touch panel control unit 3a may be configured to adjust the touch detection sensitivity by controlling the touch detection value. Moreover, the function of the touch panel control unit 3a may be taken into the CPU 2, and the CPU 2 may control the touch panel.
The touch panel 3b is a transparent member that covers the display display surface of the navigation device 1, and can detect that the operation detection region corresponding to the position of the display part on the display surface has been operated. For example, the touch panel 3b is configured such that a capacitance type using a thin film transparent substrate, a glass transparent substrate, or the like can be used.

  The interface 4 is connected to a sensor unit 5 and is configured to be able to input vehicle speed information, acceleration information, position information, and the like detected from the sensor unit 5. Further, the interface 4 is configured to be able to transfer the input position information, speed information and acceleration information to the CPU 2 via the bus line 12.

The sensor unit 5 includes a vehicle speed pulse detector 5a, a GPS receiving unit 5b (Global Positioning System), and an acceleration sensor 5c.
The vehicle speed pulse detector 5a is configured to have a function of detecting vehicle speed (hereinafter, abbreviated as “vehicle speed”), which is vehicle information.
The GPS receiver 5b is configured to receive radio waves from an artificial satellite accommodated in a positioning system typified by GPS, and to output position information indicating the current position and current speed of the vehicle.
The acceleration sensor 5c has a function of detecting the acceleration of the vehicle.

  The storage unit 6 is a recording medium such as a flash memory, an HDD (hard disk drive), a CD-ROM, a DVD-ROM, and the like, and map data necessary for navigation is recorded on the recording medium. Based on this, the map data can be read out and transferred to the RAM 8.

The ROM 7 is configured by previously writing various processing programs to be described later and other necessary information. The RAM 8 is configured to be able to write and read information necessary for executing various programs, and is configured to be able to volatilely store programs, tables and data to be described later. ing.

The display unit 9 mainly includes a display 9a, a graphic controller 9b, and a display control circuit 9c. The display unit 9 is configured to be able to display a map, a recommended route, and the like in the navigation device 1. For example, display parts such as buttons and icons to be used as indices can be displayed.
Here, the graphic controller 9b acquires map data and image data, for example, by communication with a recording device or the outside under the control of the CPU 2, and the display control circuit 9c displays its position (current location) on the electronic map based on the map data. Are superimposed and mapped to be displayed on the display 9a, or an image based on the image data is displayed on the display 9a.

  The audio output control unit 10 is configured to be able to control sound and audio output to the audio output unit 11.

  The voice output unit 11 is configured to be able to emit a guidance voice, a warning sound, and the like in the navigation device 1, and is specifically configured to be able to use a speaker or the like. Moreover, it can also comprise so that the speaker provided in the vehicle may be connected and output.

  The bus line 12 is configured so that the components constituting the navigation device 1 of the present invention can be communicably connected, and the blocks connected to the bus line 12 can exchange data with each other. It has become.

  Next, the CPU 2 and the touch panel control unit 3a in the navigation device 1 configured as described above will be specifically described with reference to FIGS. 2 (a) and 2 (b). FIG. 2A is a block diagram illustrating the configuration of the CPU, and FIG. 2B is a block diagram illustrating the configuration of the touch panel control unit.

The CPU 2 of the navigation device 1 includes a stop determination unit 2a, a vehicle speed determination unit 2b, and a sensitivity change control unit 2c.
Here, the stop determination unit 2a of the navigation device 1 is configured to be able to periodically detect the current speed of the vehicle and determine whether or not the vehicle is stopped. Using the vehicle speed information obtained from the unit 5, the stop state can be determined.

  The vehicle speed determination unit 2b of the navigation device 1 is configured to detect the vehicle speed by periodically detecting the current speed of the vehicle. Specifically, the vehicle speed determination unit 2b uses the vehicle speed information obtained from the sensor unit 5 to detect the vehicle speed. It is comprised so that it can determine.

  The sensitivity change control unit 2c of the navigation device 1 is configured to determine whether or not it is necessary to change the touch panel detection sensitivity and to shift to an appropriate touch detection mode according to the traveling speed. The detailed operation of the sensitivity change control unit 2c will be described with reference to a separate drawing.

The touch panel control unit 3a of the navigation device 1 includes a detection sensitivity control unit 301, a touch detection sensitivity table 302, and a touch detection unit 303.
The detection sensitivity control unit 301 is configured so that an appropriate touch detection sensitivity can be selected from the touch detection sensitivity table 302 based on information from the sensitivity change control unit 2c and set in the touch detection unit 303. .

Next, the detailed operation of the sensitivity change control unit 2c in the navigation device according to the present embodiment will be described with reference to FIGS.
FIG. 3 is a schematic diagram illustrating an example of each mode with respect to the vehicle speed. In FIG. 3, the horizontal axis indicates the traveling speed (unit [km / h]) of the vehicle, and the vertical axis indicates each mode to be shifted.

  The sensitivity change control unit 2c sets the low speed mode when the traveling speed of the vehicle is greater than, for example, 0 [km / h] per hour and is equal to or less than the first predetermined speed a. For example, the sensitivity change control unit 2c is greater than the first predetermined speed a. When the speed is below, the mode is shifted to the medium speed mode. In this embodiment, the first predetermined speed is 30 [km / h] and the second predetermined speed is 80 [km / h]. Specifically, the sensitivity change control unit 2c sets the low-speed mode when, for example, the speed is 0 [km / h] or more and 30 [km / h] or less, for example, 31 [km / h] or more and 80 [km / h]. When the speed is below, the mode is shifted to the medium speed mode.

  Specifically, the low speed mode is a mode in which the vehicle moves when it is traveling at a low speed on a general road where the speed cannot be obtained as in an urban area. In the low-speed mode, the change in capacitance detected by the touch of the electrostatic touch panel is detected by touching the touch panel lightly by making the change in capacitance determined to be detected by the detection sensitivity control unit 301 smaller than when stopped. By shifting to this mode, it is possible to shorten the time required to move the line of sight during operation.

  Further, the medium speed mode is a mode in which the vehicle shifts when the vehicle is traveling at a medium speed on a general road where the vehicle can travel at a high speed like a national road. In the medium speed mode, with respect to the change in the capacitance detected by the touch of the electrostatic touch panel, the change in the capacitance determined to be detected by the detection sensitivity control unit 301 is made smaller than that at the time of low-speed driving, so that the touch panel It is configured to be able to detect even when touched lightly, and by shifting to this mode, the time required for moving the line of sight during operation can be further shortened, such as road conditions and signals, surrounding vehicle conditions, etc. It is possible to reduce the possibility of overlooking changes.

  Furthermore, the high speed mode is a mode for shifting when the vehicle is traveling at a high speed on the highway. In the high-speed mode, the change in capacitance that is detected by the detection sensitivity control unit 301 with respect to the change in capacitance that is detected by the touch of the electrostatic touch panel is made smaller than that during medium-speed driving, thereby making the touch panel Furthermore, it is configured to be able to detect even a short contact, and by shifting to this mode, the time required for moving the line of sight during the operation can be further shortened, so that the driver can operate it with almost no monitor. It becomes possible.

  In this way, the detection sensitivity of the touch panel is increased even if there is little change in the capacitance detected from the touch panel as it changes from the initial state when stopped to the low speed mode, medium speed mode, and high speed mode. Therefore, the operability can be improved.

FIG. 4 is a flowchart showing detailed operations of the touch panel detection sensitivity switching operation in the navigation device 1 of the present invention.
As described above, here, the speed at the boundary between the low speed mode and the medium speed mode is referred to as a first predetermined speed, and the speed at the boundary between the medium speed mode and the high speed mode is referred to as a second predetermined speed.

  In the following description, it is assumed that the first predetermined speed is 30 [km / h] and the second predetermined speed is 80 [km / h]. That is, the vehicle speed is 0 to 30 [km / h] in the low speed mode, the vehicle speed is 31 to 80 [km / h] in the medium speed mode, and the vehicle speed is 81 [km / h] or more in the high speed mode. It has become.

  First, when the ACC of the vehicle is turned on, the touch panel detection sensitivity at the time of stop (initial state) is set in step S1. Next, acquisition of vehicle speed information from the vehicle speed pulse detector 5a is started in step S2, and thereafter vehicle speed information is acquired until the power is turned off.

  Based on the vehicle speed information acquired from the vehicle speed pulse detector 5a in step S3, the stop determination unit 2a determines whether or not the vehicle has exceeded 0 km / h. If it is determined in step S3 that the stop determination unit 2a has started running (S3, YES), the process proceeds to step S4, and the sensitivity change control unit 2c switches to the touch detection value used in the low speed mode. If no travel is detected in step S3 (when stopped) (S3, NO), the process proceeds to step S9.

  Next, in step S5, the vehicle speed determination unit 2b determines whether or not the vehicle speed detected from the vehicle speed pulse detector 5a exceeds a first predetermined speed (here, 30 [km / h]). If it is determined in step S5 that the vehicle speed has exceeded 30 [km / h], the process proceeds to step 6 (S5, YSE). If it is determined in step S5 that the vehicle speed does not exceed 30 [km / h] (S5, NO), the process returns to S3 and the process is performed.

  Next, when it is determined in S5 that the vehicle speed has exceeded 30 [km / h] (S5, YES), in step S6, the detection sensitivity control unit 301 is used to switch to the touch detection value to be used in the medium speed mode. When the vehicle speed is between 30 km / h and 80 km / h, the operation can be performed with the touch panel detection sensitivity switched to the medium speed mode.

  Next, in step S7, the vehicle speed determination unit 2b determines whether or not the vehicle speed detected by the vehicle speed pulse detector 5a exceeds a second predetermined speed (80 [km / h] in this case). Note that the second predetermined speed here is greater than the first predetermined speed described above. When the vehicle speed determination unit 2b determines that the vehicle speed exceeds 80 [km / h], the next step S8 is executed (S7, YES). When the vehicle speed determination unit 2b determines that the vehicle speed does not exceed 80 [km / h] (S7, NO), the process returns to S5 to perform the process.

  Next, after it is determined in S7 that it has exceeded 80 [km / h], in step S8, the detection sensitivity control unit 301 switches to a touch detection value to be used in the high-speed mode. The touch panel detection sensitivity is maintained in the high speed mode until the vehicle speed determination unit 2b determines that the vehicle speed is 80 [km / h] or less.

  When the vehicle speed determination unit 2b determines that the vehicle speed does not exceed 0 km / h in S3 (S3, NO), the CPU 2 determines whether or not the power is turned off in step S9, and is not turned off. (S9, NO), the process returns to step S3 and proceeds (there is no need to return to S2). If the CPU 2 determines that the power is turned off in S9 (S9, YES), the process ends.

  The navigation device 1 in the embodiment of the present invention described above can automatically change the setting to the touch panel detection sensitivity suitable for the traveling speed, and can be operated by the user simply touching the touch panel. The operability during traveling can be improved and erroneous operations can be reduced.

In the above embodiment, the first predetermined speed is 30 [km / h] per hour and the second predetermined speed is 80 [km / h] per hour. However, the present invention is not limited to this. Instead, for example, the user may be allowed to set an arbitrary vehicle speed in advance.

  In the above embodiments, the first predetermined speed is 30 [km / h] and the second predetermined speed is 80 [km / h]. However, the present invention is not limited to this. Instead, for example, the first predetermined speed is 35 [km / h] per hour during acceleration and 30 [km / h] per hour during deceleration. The second predetermined speed may be configured such that the behavior is changed during acceleration and deceleration, such as 85 [km / h] per hour during acceleration and 80 [km / h] per hour during deceleration.

In the navigation device 1 according to the embodiment of the present invention, the vehicle speed pulse obtained as the vehicle information is used to detect the traveling speed. However, the present invention is not limited and is calculated from a satellite signal such as GPS. A similar effect can be obtained by using a method of obtaining and using the vehicle speed from the change speed of the positional information and the information from the acceleration sensor.
The timing for monitoring the vehicle speed can also be set arbitrarily. For example, a method for monitoring the moving speed at regular intervals can be used even when the moving speed is constantly monitored.

  In addition, when the sensitivity mode is changed, the user can grasp that the detection sensitivity mode of the touch panel has been changed by displaying an annotation on the screen or notifying the user by voice guidance. it can.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings.
In the first embodiment, the high-speed mode, the medium-speed mode, and the low-speed mode have been described separately. In the second embodiment, the high-speed mode and the general road mode are described separately. Note that the second embodiment has the same configuration as that of the first embodiment, and detailed descriptions of only the changed portions will be given while omitting individual detailed descriptions. FIG. 5 is a schematic diagram showing the relationship between vehicle speed and mode. FIG. 6 is a flowchart showing the operation of the second embodiment.

  The difference between the second embodiment and the first embodiment is that the change criterion of the sensitivity change control unit 2c is different. Specifically, when the sensitivity change control unit 2c determines that the vehicle traveling speed acquired from the vehicle speed determining unit 2b is greater than 80 km / h, the sensitivity is changed as the high speed mode, and the vehicle traveling speed is determined to be less than 80 km / h. Then, the sensitivity is changed to the low speed mode (see FIG. 5).

Next, the operation of the display device according to the second embodiment will be described in detail with reference to a flowchart.
As shown in FIG. 6, the display device in the second embodiment first sets the touch panel detection sensitivity at the time of stoppage (initial state) when the ACC of the vehicle is turned on (S21). Next, acquisition of vehicle speed information is started from the vehicle speed pulse detector 5a, and thereafter vehicle speed information is acquired until the power is turned off (S22). Next, the vehicle speed determination unit 2b determines whether the vehicle speed acquired in S22 exceeds 0 km / h (stopped or moving) (S23). If it is determined in S23 that the vehicle speed has exceeded 0 km / h, that is, the vehicle has started to move (S23, YES), the sensitivity change control unit 2c sets the detection sensitivity of the touch panel in the low speed mode (S24). Next, the vehicle speed determination unit 2b determines whether or not the vehicle speed continuously monitored from S22 exceeds 80 km / h (S25). When the vehicle speed determination unit 2b determines that the vehicle speed exceeds 80 km / h in S25 (S25, YES), the sensitivity change control unit 2c sets the detection sensitivity of the touch panel in the high speed mode (S26). After setting the detection sensitivity of the high-speed mode touch panel in S26, the process returns to S25 to determine whether or not the vehicle speed is less than 80 km / h. . If it is determined in S23 that the vehicle speed does not exceed 0 km / h and the vehicle is stopped (S23, NO), the CPU 2 determines whether the engine is turned off (S27). If it is determined in S27 that the engine is not OFF, the process returns to S22 and the process is repeated. If it is determined in S27 that the engine has been turned off (S27, YES), the flow process is terminated. If it is determined in S25 that the vehicle speed does not exceed 80 km / h, the process returns to S23 and the process is repeated.

  Thus, the display device in the second embodiment can change the sensitivity of the display device between the low speed mode and the high speed mode depending on whether the detected vehicle speed is 80 km / h or less by detecting the vehicle speed.

(Third embodiment)
Next, a third embodiment will be described with reference to the drawings. In addition, it has the same structure as 1st Embodiment, detailed description in a location is abbreviate | omitted, and detailed description only of a changed location is given. FIG. 7 is a block diagram illustrating a configuration of a CPU according to the third embodiment. FIG. 8 is a flowchart showing processing in the third embodiment.
In the third embodiment, the difference from the first embodiment is that in the configuration of the CPU 2, in the first embodiment, the stop determination unit 2a, the vehicle speed determination unit 2b, and the sensitivity change control unit 2c are configured. (See FIG. 2 (a)), the CPU 2 in the third embodiment has a configuration of a road attribute determination unit 2d, a vehicle speed determination unit 2b, and a sensitivity change control unit 2c (see FIG. 7).

  Here, the road attribute determination unit 2d determines whether the current position is a general road or a highway by comparing with the road attribute information of the map data stored in the storage unit 6 using the current position that can be acquired from the GPS reception unit 5b. It is configured to be able to.

  As shown in FIG. 8, first, when the ACC of the vehicle is turned on, the display device according to the third embodiment sets the touch panel detection sensitivity when the vehicle is stopped (initial state) (S31). Next, acquisition of position information is started from the GPS receiver 5b (S32). Next, the CPU 2 determines whether or not the vehicle engine is turned off (S33). If it is determined in S33 that the engine is not OFF (S33, YES), the current position acquired by the GPS receiving unit 5b is compared with the road attribute information of the map data stored in the storage unit 6, and The road attribute determination unit 2d determines whether the position is a general road (S34). If it is determined in S34 that the road attribute is a general road (S34, YES), the sensitivity change control unit 2c changes the detection sensitivity of the touch panel in the low speed mode (S35). Next, by comparing the position information continuously acquired in S32 with the road attribute information of the map data stored in the storage unit 6, the road attribute determination unit 2d determines whether or not the current position is an expressway. Determination is made (S36). If the road attribute determination unit 2d determines that the road attribute is a highway in S36 (S36, YES), the sensitivity change control unit 2c changes the detection sensitivity of the touch panel in the high speed mode (S37). If the CPU 2 determines that the engine is OFF in S33, the process is terminated. If it is determined in S34 that the road attribute at the current position is not a general road (S34, NO), the process proceeds to S36 and the process proceeds. In S36, when the road attribute at the current position is determined by the road attribute determining unit 2d that is not a highway, the process returns to S33 and the process is repeated.

  From this, the display apparatus in 3rd Embodiment can change the sensitivity in a display apparatus into low speed mode and high speed mode based on the road attribute information of the present position where the vehicle exists.

(Fourth embodiment)
Next, a fourth embodiment will be described with reference to the drawings. In addition, since it has the same structure as 3rd Embodiment, the detailed description in a location is abbreviate | omitted. FIG. 9 is a flowchart showing processing in the fourth embodiment.
In the fourth embodiment, the difference from the third embodiment is that the sensitivity change control unit 2c of the CPU 2 is configured to change the sensitivity using information of both the road attribute determination unit 2d and the vehicle speed determination unit 2b. (See FIG. 7).

  As shown in FIG. 9, the display device in the fourth embodiment first sets the touch panel detection sensitivity at the time of stoppage (initial state) when the ACC of the vehicle is turned on (S41). Next, acquisition of position information is started from the GPS receiver 5b (S42). The road attribute determining unit 2d determines whether the current position is a general road by comparing the position information acquired in S42 with the road attribute information of the map data stored in the storage unit 6 (S43). If it is determined in S43 that the road attribute is a general road (S43, YES), it is determined whether or not the current vehicle speed of the vehicle is 80 km / h or more (S44). When it is determined in S44 that the vehicle speed is less than 80 km / h (S44, NO), the sensitivity change control unit 2c changes to the detection sensitivity of the touch panel in the low speed mode (S45). Next, by comparing the position information continuously acquired in S42 with the road attribute information of the map data stored in the storage unit 6, the road attribute determination unit 2d determines whether or not the current position is an expressway. Determine (S46). If the road attribute determining unit 2d determines that the road attribute is a highway in S46 (S46, YES), it is next determined whether or not the current vehicle speed of the vehicle is 80 km / h or higher (S47). If it is determined in S47 that the vehicle speed is 80 km / h or higher (S47, YES), the sensitivity change control unit 2c changes to the detection sensitivity of the touch panel in the low speed mode (S48).

  If it is determined in S43 that the road attribute information at the current position is not a general road (S43, NO), the CPU 2 determines whether the vehicle engine is stopped (ACC is OFF) (S49). If it is determined that the engine is stopped in S49 (S49, YES), the processing flow is terminated. If it is determined in S49 that the engine is not stopped (S49, NO), the process returns to S43. In S44, if it is determined that the vehicle speed is 80 km / h or more (S44, YES), the sensitivity change control unit 2c changes to the detection sensitivity of the touch panel in the high speed mode (S50). After the change, the process returns to S44. Furthermore, if it is determined in S46 that the road attribute at the current position is not a highway (S46, NO), the process returns to S43 and continues. In S47, if it is determined in S47 that the vehicle speed is less than 80 km / h (S47, NO), the sensitivity change control unit 2c changes to the detection sensitivity of the touch panel in the low speed mode (S51). Then, after changing the detection sensitivity, the process returns to S46.

  Accordingly, the display device according to the fourth embodiment can change the sensitivity of the display device between the low speed mode and the high speed mode based on the road attribute information of the current position where the vehicle is present and the vehicle speed information.

  The navigation device of the present invention monitors the traveling speed of the vehicle and automatically changes the setting to the touch panel detection sensitivity suitable for the traveling speed of the vehicle, thereby improving the operability during traveling and reducing the user's erroneous operation. It is useful as a navigation device that can.

1 Navigation device 2 CPU
2a Stop determination unit 2b Vehicle speed determination unit 2c Sensitivity change control unit 2d Road attribute determination unit 3 Input unit 3a Touch panel control unit 3b Touch panel 4 Interface 5 Sensor unit 5a Vehicle speed pulse detector 5b GPS reception unit 5c Acceleration sensor 6 Storage unit 7 ROM
8 RAM
DESCRIPTION OF SYMBOLS 9 Display part 9a Display 9b Graphic controller 9c Display control circuit 10 Audio | voice output control part 11 Audio | voice output part 12 Bus line 301 Detection sensitivity control part 302 Touch detection sensitivity table 303 Touch detection part

Claims (5)

A display device capable of touch input,
A touch input detection unit for detecting the touch input;
A vehicle speed detector for detecting the speed of the vehicle;
A detection sensitivity adjustment unit that adjusts the detection sensitivity of the touch input detection unit based on the speed detected by the vehicle speed detection unit;
A display device comprising: A display device that can perform touch input and has map data,
A touch input detection unit for detecting the touch input;
A current position detector for detecting the current position;
A road attribute search unit that searches the map data for a road attribute at the current position detected by the current position detection unit;
A detection sensitivity adjustment unit that adjusts the detection sensitivity of the touch input detection unit based on the road attribute searched by the road attribute search unit;
A display device comprising:   The detection sensitivity adjustment unit calculates a speed from the displacement of the current position detected from the current position detection unit, and adjusts the detection sensitivity using the road attribute searched by the road attribute search unit and the speed. The display device according to claim 2, wherein the display device is characterized. The display device further includes a vehicle speed detection unit that detects the speed of the vehicle,
3. The display device according to claim 2, wherein the detection sensitivity adjustment unit adjusts the detection sensitivity using a speed detected by the vehicle speed detection unit and a road attribute searched by the road attribute search unit. .   The display device according to claim 1, wherein the detection sensitivity adjustment unit automatically changes the detection sensitivity stepwise based on the speed.

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