JP2004309962A - Display device having touch panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make recognizable an approximate portion where finger tip touched without looking at a liquid crystal display having a touch panel. <P>SOLUTION: When a map is displayed on a liquid crystal display 16, the amplitudes of vibration transmitted to a touch panel 17 from a vibration generator 19 vary in accordance with the height of the place on the map corresponding to the place being pressed on the panel 17. Thus, a three-dimensional feeling is obtained from the map being displayed on the display 16 by the magnitudes of the vibration transmitted to the finger tip. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device having a touch panel, and more particularly, to a display device with a touch panel that generates different vibrations according to a pressing operation position of the touch panel.
[0002]
[Prior art]
For example, in a display device of a car navigation device, a touch panel is provided on the surface of a liquid crystal display, and when a menu displayed on the liquid crystal display is pressed, the menu is selected.
[0003]
In the example of the car navigation device described above, the touch panel is used as input operation means for menu selection. In such a display device using the touch panel as the input operation means, an input operation is performed by touching the touch panel. In such a case, vibration is transmitted to the fingertip to inform the operator that a menu has been effectively selected (for example, Patent Document 1).
[0004]
[Patent Document 1]
JP 2000-137576 A
[Problems to be solved by the invention]
However, according to the conventional technology disclosed in Patent Document 1, it is not possible to see which part of the touch panel is touched, for example, which of a plurality of menus displayed on the liquid crystal display is touched, by looking at the liquid crystal display. I do not know without it. For this reason, a desired menu cannot be selected by blind touch.
[0006]
The present invention has been made in view of the above circumstances, and its purpose is to allow a user to perceive the displayed content three-dimensionally by vibration transmitted to the fingertip touching the touch panel without looking at the liquid crystal display unit. It is another object of the present invention to provide a display device with a touch panel that allows the user to feel which position or area is touching.
[0007]
[Means for Solving the Problems]
In the present invention, the vibration transmitted to the fingertip varies depending on the pressed position of the touch panel, so that the touched position can be roughly understood without looking at the liquid crystal display unit.
When the map is displayed on the liquid crystal display unit, the vibration can be varied according to the altitude of the pressed position on the map. According to this, the undulation of the terrain can be sensed by the strength of vibration transmitted to the fingertip.
[0008]
When the touch panel functions as input operation means and an effective operation area is displayed on the liquid crystal display unit, the vibration may be made different depending on the effective operation area pressed. According to this, even without looking at the liquid crystal display unit, it is possible to know where the finger is pressed by the vibration transmitted to the fingertip.
[0009]
Further, when a pressing operation is performed outside the effective operation area, the vibration can be made different depending on the distance between the pressed position and the effective operation area. According to this, the direction in which the effective operation area exists with respect to the position currently touched can be sensed by the vibration.
[0010]
Further, according to the present invention, it is possible to detect the current situation and vary the vibration transmitted to the fingertip according to the pressed position and the situation. When this configuration is applied to a car navigation device, it is possible to determine the stop / run state of the vehicle and notify the user by vibration when a menu that cannot be operated during the selection is operated. it can.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment in which the present invention is applied to a car navigation device will be described with reference to FIGS.
As shown in FIG. 1, the car navigation device 1 controls the control circuit 2 for a position detector 3 as position acquisition means, a map data input device 4 as map data acquisition means, an external memory 5, and a liquid crystal display unit 6. , An operation switch group 7, an audio output device 8, a remote control sensor 10 for detecting a signal from the remote control 9, and the like.
[0012]
The control circuit 2 is configured as a microcomputer, and includes a CPU, a ROM, a RAM, and an I / O interface (all not shown). Of these, the ROM stores a car navigation program and the like, and the RAM temporarily stores processing data at the time of executing the program, road map data obtained from the map data input device 4, and the like.
[0013]
The position detector 3 includes a geomagnetic sensor 11 for detecting an absolute bearing, a gyroscope 12 for detecting a yaw angular velocity (yaw rate), a distance sensor 13 for detecting a traveling distance of the vehicle, and a GPS satellite. It is composed of a GPS receiver 14 for receiving signals, and is a part for calculating current position information (longitude / latitude information) of the vehicle. The position detector 3 performs high-accuracy position detection while interpolating the detection errors because each component has a detection error having a different property. However, the current position is detected with the required detection accuracy. It is not necessary to provide all components if they can be calculated. Further, the position detector 3 may be configured by combining a rotation sensor of the steering wheel, a wheel sensor for detecting the rotation of each tire, and the like.
[0014]
The map data input device 4 is for reading data from a large-capacity information recording medium 15 such as a CD-ROM or a DVD-ROM. In this case, the information recording medium 15 includes, in addition to various types of map drawing data and map matching data, a facility name database in which facility names are arranged in, for example, the Japanese syllabary order, and specific information on each facility in the facility name database. Facility database that covers basic information (facility name, genre name indicating division of occupation, etc., facility location data (longitude / latitude data), etc.), phone number database showing correspondence between telephone numbers and facilities, correspondence between postal codes and facilities A variety of map databases are stored, such as a postal code database indicating the correspondence between addresses and facilities, a map code database indicating the correspondence between codes representing points on the map and positions on the map. Note that a hard disk, a magneto-optical disk, a large-capacity memory card, or the like can be used as the information recording medium.
[0015]
The external memory 5 is constituted by a flash memory card or the like, for example, for storing program software for supporting an information recording medium of another standard, and for storing or recalling specific data. Is provided.
The liquid crystal display unit 6 includes, for example, a color liquid crystal display 16 and a touch panel 17 for displaying maps, figures, characters, and the like under the control of the control circuit 2 as display control means. Installed near. The operation switch group 7 is composed of mechanical switches arranged around the liquid crystal display 16 and supplies operation inputs such as various data and setting items to the control circuit 2. Note that the remote control sensor 10 is also provided as an operation input means, and receives an operation input from the remote control 9 and gives it to the control circuit 9. The voice output device 8 includes a voice synthesis circuit, an amplifier, a speaker, and the like, and can generate an arbitrary voice output according to voice information from the control circuit 2.
[0016]
Here, in addition to the basic function of executing a map matching process for locating the current position on the map, the control circuit 2 also transmits point data such as a destination and a waypoint via the operation switch group 7, the remote controller 9, and the touch panel 17. Is input, a route search operation from the current position to the destination is performed based on the point data using, for example, the Dijkstra method, and a guide route corresponding to the route search result is displayed on a map screen. It has well-known support functions such as a calculation function (including a so-called reroute search function) and a route guidance function of performing various guides by voice or display based on the guidance route obtained by this function. When a destination is set, the destination can be searched for in the corresponding genre, such as Japanese syllabary, address, postal code, telephone number, map code, hotel or station, and a point stored in the external memory 5 in advance. (Memory point).
[0017]
The touch panel 17 is configured such that, for example, a glass plate and a transparent film face each other with a slight gap, and is disposed on the liquid crystal display 16. Since the touch panel 17 is transparent, an image displayed on the liquid crystal display 16 can be viewed from the touch panel 17.
[0018]
The touch panel 17 includes, for example, a resistive film type detecting unit 18 as a detecting unit for detecting a pressing operation and a pressing position when a pressing operation is performed. The detection unit 18 of the resistive film type is made of a transparent conductive film (ITO) attached to a glass plate and a transparent film. Then, when the transparent film is pressed, the pressed portion is locally pressed down, and the transparent film and the transparent conductive film adhered to the glass plate come into contact with each other. (Position on the Y coordinate). Since this detection method is well known, a detailed description is omitted. The pressing of the touch panel 17 and the detection of the position are not limited to the method using the transparent conductive film.
[0019]
The liquid crystal display unit 6 is provided with a vibration generating device 19 as vibration generating means for applying vibration to the touch panel 17 as described above. The vibration generating device 19 has, for example, a configuration in which an eccentric weight is attached to a rotating shaft of a motor, and is capable of transmitting vibration to the touch panel 17 by, for example, vibrating an outer frame portion supporting the touch panel 17. The control circuit 2 functions as vibration control means for controlling the vibration generator 19, and changes the rotation speed of the motor of the vibration generator 19 according to the pressing operation position of the touch panel 17, as described later. The vibration transmitted to the radiator 17 is made different.
[0020]
When the touch panel 17 functions as input operation means, the liquid crystal display 16 has a rectangular switch area A indicating an area for receiving an input by a pressing operation (an effective operation area; an area functioning as a switch), as shown in FIG. And a switch name B indicating a function performed when the switch area A is pressed.
[0021]
In this embodiment, when a map is displayed on the liquid crystal display 16 as shown in FIG. 2, when the touch panel 17 is pressed, the vibration corresponding to the elevation of the pressed position on the display map is generated by the touch panel. 17 is given. When the switch area A is displayed on the liquid crystal display 16 as shown in FIG. 3, when the switch area A is pressed, vibration different from that when an area outside the switch area A is pressed is generated. It is provided to the touch panel 17.
[0022]
The contents of the control for giving the vibration will be described with reference to the flowchart of FIG. For example, it is assumed that a small mountain and a map around the mountain are displayed on the liquid crystal display 16 as shown in FIG. When the touch panel 17 is pressed with a fingertip in this map display state, the pressing and the pressed position are detected by the detecting unit 18 ("YES" in step S1, step S2).
[0023]
Information on the pressed position detected by the detection unit 18 is given to the control circuit 2. The control circuit 2 calculates which position on the liquid crystal display 16 the pressed position corresponds to based on the position information given from the detecting unit 18, and determines whether the pressed position is the switch area A or the map area. It is determined whether the area is another area (step S3, step S6).
[0024]
Now that the map is displayed on the liquid crystal display 16, the control circuit 2 determines "NO" in step S3 and "YES" in step S6, and the pressed position is any position (latitude and longitude) on the map. Is calculated, and the altitude at the position is detected. Then, the control circuit 2 determines a vibration amplitude corresponding to the detected altitude (step S7), and drives the vibration generator 19 with the amplitude (step S5).
[0025]
The vibration amplitude at this time will be described. FIG. 2B shows the vibration amplitude of the touch panel 17 when the touch panel 17 is pressed along the air line in FIG. 2) shows the vibration amplitude of the touch panel 17 when the touch panel 17 is pressed along the line II in FIG. As described above, as the altitude increases, a vibration having a large amplitude is given to the touch panel 17. Therefore, when the touch panel 17 is touched with a fingertip, the altitude of the position on the map can be sensed by the magnitude of the vibration amplitude, so that the map can be viewed in a three-dimensional sense.
[0026]
On the other hand, the touch panel 17 is set to function as input operation means, and a switch area A for selecting a search method for searching for a destination is displayed on the liquid crystal display 16 as shown in FIG. Suppose it had been. Then, when the pressed position of the touch panel 17 is not the position corresponding to the switch area A displayed on the liquid crystal display 16, the control circuit 2 returns “NO” in step S3 and “NO” in step S6. In step S8, the motor of the vibration generator 19 is rotationally driven so that the vibration is transmitted to the touch panel 17 with an amplitude other than the switch area A.
[0027]
If the pressed position of the touch panel 17 is within the switch area A, the control circuit 2 makes “YES” in step S3 and shifts to step S4. The motor of the vibration generator 19 is driven to rotate so as to be transmitted.
[0028]
FIG. 3B shows the vibration amplitude of the touch panel 17 when the touch panel 17 is pressed along the woofer line in FIG. 3A, and FIG. 3) shows the vibration amplitude of the touch panel 17 when the touch panel 17 is pressed along the air line. As described above, in a region other than the switch region A, a vibration with a small amplitude is transmitted to the touch panel 17, and in the case of the switch region A, a vibration with a larger amplitude is given to the touch panel 17 than in the other region. Therefore, when the touch panel 17 is touched with a fingertip, it is possible to sense whether or not the currently pressed location is the switch area A.
In the above-described second embodiment, the vibration amplitude of each switch area A may be made different so that the user can sense which switch area is being pressed by the vibration.
[0029]
FIG. 5 shows a second embodiment of the present invention. In this embodiment, when the map and the switch area A are displayed on the liquid crystal display 16, it is possible to sense which of the two is pressed by the vibration transmitted to the fingertip. .
That is, as shown in FIG. 5A, the liquid crystal display 16 displays a map and a switch area A of a switch for enlarging or reducing this map. Then, as shown in FIGS. 5B and 5C, when the pressed position of the touch panel 17 is in the switch area A, a vibration having a constant amplitude is given to the touch panel 17 from the vibration generator 19, and the In some cases, a vibration having an amplitude corresponding to the altitude of the pressed position is provided from the vibration generator 19 to the touch panel 17.
[0030]
As described above, according to the present embodiment, when the switch area A is displayed in the map displayed on the liquid crystal display 16, it is possible to find the switch area A with only the sense of a fingertip by the vibration amplitude. .
[0031]
FIGS. 6 and 7 show a third embodiment of the present invention. In this embodiment, a signal of a vehicle speed detecting means, for example, a pulse signal for detecting rotation of an axle is input to a control circuit 2. It is determined from the signal from the speed detecting means whether or not the vehicle is running. When the touch panel 17 functions as the input operation means, the control circuit 2 is capable of discriminating between switches that cannot be selected during traveling of the vehicle and switches that can be selected by vibration transmitted to the fingertip.
[0032]
That is, FIG. 6A shows a switch area A and a switch name B for selecting a destination search method by making the touch panel 17 function as an operation input unit. Among them, when searching for a destination by the Japanese syllabary, address, zip code, and telephone number, the input is accepted even while the vehicle is running as a valid input operation. However, search can be performed by map code, memory point, hotel, station, etc. For example, when searching for a genre, an input is not accepted as an invalid input operation while the vehicle is running.
[0033]
FIGS. 6B and 6C show the amplitude of vibration applied to the touch panel 17 when the touch panel 17 is pressed along the ooh and car lines shown in FIG. 6A. ing.
That is, when the switch area A is pressed (“YES” in step S3), the control circuit 2 first sets the amplitude when the switch area A is operated (step S4a). Next, when the vehicle is stopped ("NO" in step S4b), the control circuit 2 drives the vibration generator 19 so that the vibration having the amplitude set in step S4a is transmitted to the touch panel 17 (step S4a). S5).
[0034]
When the vehicle is traveling ("YES" in step S4b), the control circuit 2 determines that the pressed switch area A is not a switch whose operation during travel is restricted ("NO" in step S4c). Then, the vibration generator 19 is driven to transmit the vibration having the amplitude set in step S4a to the touch panel 17 (step S5).
[0035]
If the operation of the switch is restricted ("YES" in step S4c), the control circuit 2 resets the amplitude to that in the restricted switch area (step S4d), and the vibration of the amplitude is displayed on the touch panel 17. The information is transmitted (step S5).
[0036]
As can be understood from the above description, in the case of the search method in which the search can be performed even while the vehicle is running, vibration of a certain amplitude is given to the switch area A for selection no matter where the switch area A is pressed. On the other hand, in the case of the search method that cannot be operated during traveling, the touch-sensitive panel 17 is provided with a vibration that changes in strength within the switch area for selection. Therefore, switch items that cannot be selected while the vehicle is traveling and switch items that can be selected can be determined by vibration transmitted to the fingertip.
[0037]
FIGS. 8 and 9 show a fourth embodiment of the present invention. In this embodiment, when an area other than the switch area A is pressed, a vibration having a smaller amplitude is applied to the touch panel 17 as the area is closer to the switch area A. It is configured to be performed.
[0038]
That is, FIG. 8A shows a switch area A and a switch name B for selecting a destination search method. FIGS. 8B and 8C show vibration amplitudes applied to the touch panel 17 when the touch panel 17 is pressed along the key line and the cool line shown in FIG. 8A. ing.
[0039]
In other words, in FIG. 8A, when a pressing operation is performed on an area outside the switch area A (“NO” in step S3, “NO” in step S6), the control circuit 2 detects the switch area closest to the pressed position. (Step S8a), the amplitude is set according to the distance to the nearest switch area (Step S8b), and the vibration generator 19 is driven so that the vibration of the amplitude is transmitted to the touch panel 17 (Step S5). ).
[0040]
As can be understood from the above description, when a region other than the switch region A is pressed, a vibration having a smaller amplitude is applied to the touch panel 17 as the pressed position is closer to the switch region A. With this configuration, the switch area A can be located by the vibration transmitted to the fingertip, and the liquid crystal display 16 does not need to be seen with the eyes, which can contribute to safe driving. Note that a vibration having a larger amplitude may be applied to the touch panel 17 as being closer to the switch area A.
[0041]
The present invention is not limited to the embodiment described above and shown in the drawings.
The method of making the vibration different according to the type of the region is not limited to making the amplitude different, and the vibration is made different by changing the amplitude at a certain time interval and changing the time interval of the amplitude change. The vibration can be made different by changing the frequency while keeping the constant.
The vibration generating means is not limited to a means for generating vibration by rotating an eccentric weight by a motor, and various kinds of vibration generating means such as a speaker, which vibrates an iron piece by changing a voltage applied to an electromagnet, such as a speaker, may be used.
INDUSTRIAL APPLICABILITY The present invention is not limited to a display device of a car navigation device, and can be widely applied to a display device with a touch panel.
[Brief description of the drawings]
FIG. 1 is a block diagram of a car navigation device showing a first embodiment of the present invention. FIG. 2 (a) is a front view of a liquid crystal display displaying a map, and FIG. 2 (b) is an air map of FIG. FIG. 3 (a) is a front view of a liquid crystal display showing a switch area, and FIG. 3 (b) is a front view of a liquid crystal display showing a switch area. FIG. 5A is a diagram showing a change in vibration amplitude along the woofer line, and FIG. 5C is a diagram showing a change in vibration amplitude along the aerial line shown in FIG. 4A. FIG. 6 is a diagram corresponding to FIG. 2 showing a second embodiment. FIG. 6 is a diagram corresponding to FIG. 3 showing a third embodiment of the present invention. FIG. 7 is a diagram corresponding to FIG. FIG. 3 corresponding diagram [FIG. 9] FIG. 4 corresponding diagram [Description of reference numerals]
In the figure, 2 is a control circuit (display control means, vibration control means, situation detection means), 6 is a liquid crystal display unit, 16 is a liquid crystal display, 17 is a touch panel, 18 is a detection section, and 19 is a vibration generation device (vibration generation apparatus). Means).

Claims (5)

A liquid crystal display,
Display control means for controlling display of characters, figures, and the like displayed on the liquid crystal display unit;
A transparent touch panel provided on the liquid crystal display unit and having a detection unit that detects a press and detects a press position when a press operation is performed,
When the detecting unit detects the pressing, a vibration generating unit that generates a vibration and transmits the vibration to a finger that performs a pressing operation,
A display device with a touch panel, comprising: vibration control means for controlling the vibration generation means to vary the vibration generated according to the pressed position detected by the detection means. A map is displayed on the liquid crystal display,
2. The vibration control means according to claim 1, wherein the pressed position corresponds to a position on the displayed map, and the vibration generated by the vibration generating means varies according to the altitude of the position on the map. The display device with a touch panel according to the above. When the touch panel functions as input operation means,
An effective operation area is displayed on the liquid crystal display,
2. The display device with a touch panel according to claim 1, wherein the vibration control unit changes the vibration generated by the vibration generation unit according to the pressed effective operation area. 3. When the touch panel functions as input operation means,
An effective operation area is displayed on the liquid crystal display,
2. The vibration control unit according to claim 1, wherein when the outside of the effective operation area is pressed, the vibration generated by the vibration generation unit is changed according to the distance between the pressed position and the effective operation area. 2. The display device with a touch panel according to 2. A liquid crystal display,
Display control means for controlling display of characters, figures, and the like displayed on the liquid crystal display unit;
A transparent touch panel provided on the liquid crystal display unit and having a detection unit that detects a press and detects a press position when a press operation is performed,
When the detecting unit detects the pressing, a vibration generating unit that generates a vibration and transmits the vibration to a finger that performs a pressing operation,
Status detection means for detecting the status;
A display device with a touch panel, comprising: a vibration control unit that controls the vibration generation unit to vary a vibration generated according to a pressed position detected by the detection unit and a situation detected by the situation detection unit.

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