JP4888407B2 - Resistive touch panel control device, electronic system, and program - Google Patents

Description

  The present invention relates to a control device that controls a resistive touch panel that receives an input from a user via a resistive film by specifying a position where the user presses the resistive film.

  Touch panels are used in many electronic devices such as navigation devices and portable game machines. By using this touch panel, the user can operate the electronic device by touching the components displayed on the screen, so that the electronic device can be operated intuitively. As one of the touch panel control systems, there is a system called a resistance film system. In this resistive film type touch panel, glass and a film provided with a transparent conductive film formed of ITO (indium tin oxide) or the like face each other with a small gap through the surface of the transparent conductive film. When the user presses this film, the contact between these transparent conductive films is generated. The transparent conductive film is a resistance film having a uniform resistance, and electrodes are provided on the side ends of the resistance film. In the resistive film type touch panel, a voltage is applied to the resistive film via the predetermined electrode in order to specify the pressing position of the touch panel. From the other electrode provided on the resistive film, the predetermined electrode and the user The voltage generated in the resistance between the contact of the resistance film generated when the resistance film is pressed down is measured. And based on the measured voltage value, the resistance value between a predetermined electrode and a contact is specified. Since the resistance value between two points on the resistance film is proportional to the distance, the distance between the predetermined electrode and the contact is specified based on the resistance value, and the pressing position of the touch panel is specified based on the distance. .

  This resistive film type touch panel has a drawback that the variation of the operation is limited because the pressed position can be accurately specified only when one part of the touch panel is pressed. This is because when a plurality of locations on the touch panel are pressed at the same time, the voltage generated in the resistance between each contact and a predetermined electrode cannot be measured individually. When the voltage generated in the resistance between a given electrode and each contact is measured via another electrode when multiple places are pressed simultaneously, it occurs between each contact and the given electrode. The voltage value generated in the resistance R, which is a resistance obtained by synthesizing the existing resistance, is measured. To give a specific example, if the user presses two points A and B on the touch panel, the distance between the point A and the predetermined electrode is L1, the resistance value is r1, and the point B and the predetermined point Assuming that the distance between the electrode and L2 is L2, and the resistance value is r2, the following relationship is established between L1, r1, L2, and r2 and r, which is the resistance value of the resistor R.

Hereinafter, the pressing position specified by the resistance value r of the resistor R is referred to as the center of gravity of the two pressing positions on the touch panel. As described above, since the resistance value between two points on the resistance film is proportional to the distance, assuming that the resistance value of the resistance film per unit length is k, r1 = k × L1, r2 = k × L2 This relationship holds. Further, if the distance between two points of the resistance film corresponding to the resistance value r is L, the relationship r = k × L is established. Therefore, based on Equation 1, the following relationship is established.

Since it is usually difficult to intuitively calculate the distance L based on L1 and L2 which are distances between the point A and the point B and the predetermined electrode, when the user presses the point A and the point B, the point A And it can be said that it is difficult to intuitively recognize the center of gravity of the point B. Therefore, if some processing is performed based on the position of the center of gravity when the user presses two places on the touch panel, the user may be confused and the usability of the apparatus may be deteriorated.

An invention for solving such problems is described in Patent Document 1. Patent Document 1 describes an invention related to an analog touch switch that can detect multiple presses on a touch panel. In this analog touch switch, when the user presses the touch panel, multiple pressing is detected based on the current value flowing between two resistance films arranged so as to face each other in a non-contact manner. When multiple pressing is detected, the user's operation is invalidated.
JP-A-7-160402

  By using the analog touch switch described in Patent Document 1, if the user accidentally performs multiple pressing, the user's operation becomes invalid, and processing contrary to the user's intention is performed, resulting in confusion. Can be prevented. However, the problem that the pressing position can be accurately specified only when one part of the touch panel is pressed has not been solved, and the problem that the variation of the operation is limited has not been improved.

  This invention is made | formed in view of the said problem, and aims at increasing the variation of operation of a resistive film type touch panel.

  The control device according to claim 1, which is made to solve the above-described problem, is a rectangular resistive film provided with a plurality of electrodes, and at least a first side which is an arbitrary side of the resistive film. A resistive touch panel including a resistive film provided with electrodes in the vicinity and in the vicinity of the second side opposite to the first side is controlled. The control device includes a voltage applying unit that applies a voltage to an electrode provided on the resistive film, and a pressing position of the resistive film when the resistive film is pressed, and an electrode to which a voltage is applied by the voltage applying unit. First voltage value specifying means for specifying a voltage value generated in the resistor between the first voltage value and the second voltage value. In addition, the control device causes a voltage to be applied between an electrode provided in the vicinity of a predetermined side of the resistance film and an electrode provided in the vicinity of the other side via a voltage applying unit, The voltage value generated by the resistance between the pressed position and the electrode provided in the vicinity of the predetermined side is specified via the first voltage value specifying means, and the voltage value specified by the first voltage value specifying means And a control means for performing a pressing position specifying process for specifying the pressing position with reference to a predetermined side of the resistance film. Then, the control means performs a pressed position specifying process related to the first side, specifies a first pressed position based on the first side, and specifies a pressed position related to the second side. The second step of performing the process and specifying the second pressed position with reference to the second side and the second pressed position specified in the second step with the first side as the reference An intermediate position specifying process is performed, which is converted into three pressed positions and has a third step of specifying an intermediate position between the first pressed position and the third pressed position.

  Here, the one or more electrodes provided in the vicinity of the side may be electrodes provided along the side of the resistance film, such as a four-wire type resistance film type touch panel. Alternatively, electrodes provided at both ends of the side of the resistive film may be used like a 5-wire resistive film type touch panel. Moreover, the some electrode provided along the edge | side of a resistive film may be sufficient.

  When the pressing position specifying process is performed when two portions of the resistance film are pressed, if the pressing position is specified with reference to a predetermined side based on the voltage specified by the first voltage value specifying means, The position is specified as the pressed position. Then, by performing the pressing position specifying process based on the first side and the second side facing the first side, and specifying the middle position of the position of the center of gravity specified using these sides as a reference The intermediate position between the two pressed positions with the first side as a reference can be specified.

  Therefore, in the one-dimensional coordinate system with the first side as the starting point and the coordinate axis set to be orthogonal to the first and second sides, the middle position between the two pressed positions is specified. It becomes possible to do. And it becomes possible to increase the variation of operation of a resistance film type touch panel by processing based on the middle position of two specified pressing positions.

Further, the control device may specify an intermediate position between the two pressed positions as follows.
In the control device according to the second aspect, the X axis is set parallel to any side of the resistance film, and the Y axis is set parallel to any side of the resistance film perpendicular to the X axis. Then, the control means specifies the X element at the intermediate position by executing the intermediate position specifying process with any side orthogonal to the X axis as the first side, and sets any side orthogonal to the Y axis. By performing the intermediate position specifying process as the first side, the Y element at the intermediate position is specified, and the center coordinate calculation using the X element at the intermediate position and the Y element at the intermediate position as the center coordinates of the two pressed positions Execute the process.

By doing so, it is possible to specify the coordinates of the intermediate position between the two pressed positions in the XY coordinate plane, that is, the two-dimensional coordinate system.
However, the control device according to claim 2 cannot specify how many portions of the resistive film are pressed by the user, and when only one portion of the resistive film is pressed, There is a possibility that the center coordinate calculation process is executed when three or more of the above are pressed. If processing is performed based on the center coordinates calculated in such a case, processing contrary to the user's intention is executed.

  Therefore, the control device according to claim 3 includes: a first current value specifying unit that specifies a current value flowing through a contact generated at a pressing position of the resistance film when the user presses the resistance film; Sending means for sending the center coordinates calculated by the means to the outside is further provided. Then, when the control unit detects the two-point pressing of the resistance film by the user based on the current value specified by the first current value specifying unit, the control unit calculates the center coordinates of the two pressed positions calculated in the center coordinate calculation process. Then, the data is sent to the outside through the sending means.

  By doing so, the device that performs processing based on the central coordinates received from the control device is configured so that only one point of the resistive film is pressed, or three or more points of the resistive film are pressed. There is no longer a process based on. Therefore, it is possible to prevent the processing based on the center coordinates from being executed against the user's intention.

Further, the following processing may be performed based on the center coordinates of the two pressed positions.
According to a fourth aspect of the present invention, there is provided an electronic system according to the third aspect, and an image data generating device that generates image data of an image to be displayed on a display screen covered with a resistive film included in the resistive touch panel. It is composed of The image data generation device includes information acquisition means for acquiring various information from the control device, and image data generation means for generating image data of an image to be displayed on the display screen. When the image data generation unit acquires the center coordinates of the two pressed positions via the information acquisition unit, the image data generation unit generates image data indicating an enlarged image of the image displayed in the area near the center coordinate on the display screen.

By doing so, it is possible to easily enlarge the image displayed on the display unit, and it is possible to improve the usability of the resistive touch panel.
According to a fifth aspect of the present invention, there is provided an electronic system that receives selection of a component of an image displayed on a display screen that is covered with a resistance film included in the control device according to the third aspect and a resistive touch panel. It consists of an input reception device. The input reception device includes information acquisition means for acquiring various information from the control device, and selection reception means for receiving selection of components of the image displayed on the display screen. When the selection receiving means acquires the center coordinates of the two pressed positions via the information acquisition means, a plurality of selectable components are displayed in the area near the center coordinates on the display screen, and these If any one of the constituent elements is already selected, another constituent element displayed in the area near the center coordinate on the display screen is newly selected instead of the selected constituent element.

  For example, when selectable components are displayed adjacent to each other, or when some of these components are overlapped, touch the position where these components are displayed. Therefore, it is difficult to select a component. However, by having the configuration according to claim 5, it becomes easy to select a component displayed adjacently or a component displayed in a partially overlapped state, and a resistance film type It becomes possible to improve the usability of the touch panel.

Moreover, it becomes possible to increase the variation of operation of a resistance film type touch panel by having the following structures.
Further, in the control device according to claim 6, the resistive film provided in the resistive film type touch panel is provided with one or two or more electrodes along each side, and the control device uses the voltage applying unit to perform the resistive film. And a second voltage value specifying means for specifying a voltage value applied to the first and second current value specifying means for specifying a current value flowing through the resistance film. Then, the control means executes a center coordinate calculation process, calculates the center coordinates of the two pressed positions when the user presses two places on the resistive film, and calculates the calculated central coordinates and the two on the resistive film. A resistance value generated between an electrode provided along a third side perpendicular to the Y axis and a position indicated by the center coordinate, based on k which is a resistance value per unit length between points. Rxc1, which is a resistance value generated between Ryc, the electrode provided along the fourth side orthogonal to the third side, and the position indicated by the center coordinate, and the other side orthogonal to the third side A fourth step of calculating a resistance value Rxc2 generated between the electrode provided along the fifth side which is the side and the position indicated by the center coordinates is executed. The control means applies a voltage between the electrode provided along the third side and the electrode provided along the fourth side via the voltage application means, and the second The voltage value applied to the resistance film is specified via the voltage value specifying means, and the current value flowing through the resistance film is specified via the second current value specifying means, along the third side A fifth step of calculating R1 which is a resistance value generated between the provided electrode and the electrode provided along the fourth side is executed. The control means applies a voltage between the electrode provided along the third side and the electrode provided along the fifth side via the voltage application means, and the second The voltage value applied to the resistance film is specified via the voltage value specifying means, and the current value flowing through the resistance film is specified via the second current value specifying means, along the third side A sixth step of calculating R2 which is a resistance value generated between the provided electrode and the electrode provided along the fifth side is executed. Further, the control means executes a seventh step of calculating d, which is an interval between two pressing positions of the resistance film, according to Equation 3. And a pressing position space | interval calculation process is performed by performing each step.

As a specific example of Equation 3, the equation described in Equation 4 can be given.

By doing so, it becomes possible to perform processing based on the distance between the two pressed positions of the resistance film, and it is possible to increase variations in the operation of the resistance film type touch panel.

  However, the control device according to claim 6 cannot specify how many portions of the resistive film are pressed by the user. Therefore, for example, the process is performed based on the distance of the pressed position obtained as a result of executing the pressed position interval calculation process even though three or more portions of the resistive film are simultaneously pressed by the user. There is a risk that processing will be performed against the intention of the user.

  Accordingly, the control device according to claim 7 includes a third current value specifying means for specifying a current value flowing through the contact generated at the pressing position of the resistance film when the resistance film is pressed by the user, and a control. Sending means for sending the center coordinates calculated by the means to the outside is further provided. Then, the control means detects the center of the two pressed positions calculated in the center coordinate calculation process when detecting the two-point pressing of the resistance film by the user based on the current value specified by the third current value specifying means. The coordinates and the interval between the pressed positions calculated by the pressed position interval calculation process are sent to the outside via the sending means.

By doing so, it is possible to perform the second process, which is a process based on the center coordinates of the two pressed positions and the interval between the pressed positions, in accordance with the user's intention.
Further, the following processing may be performed based on the center coordinates of the two pressed positions.

  An electronic system according to an eighth aspect is the control device according to the seventh aspect, an image data generating device that generates image data of an image to be displayed on a display screen covered with a resistive film included in the resistive touch panel. It is composed of The image data generation device includes information acquisition means for acquiring various information from the control device, and image data generation means for generating image data of an image to be displayed on the display screen. Then, when the image data generating unit acquires the center coordinates of the two pressed positions and the interval between the pressed positions via the information acquiring unit, the center of the center coordinates is set on the display screen, and the interval between the pressed positions is the diameter. Image data indicating an image obtained by enlarging the image displayed in the circle area is generated.

  By doing so, it is possible to easily enlarge a specific portion of the image displayed on the display unit to a user's preferred magnification, and to improve the usability of the resistive touch panel.

  An electronic system according to claim 9 accepts selection of components of an image displayed on a display screen covered with a resistance film included in the control device according to claim 7 and the resistance film type touch panel. It consists of an input reception device. The input reception device includes information acquisition means for acquiring various information from the control device, and selection reception means for receiving selection of components of the image displayed on the display screen. Then, when the selection receiving unit acquires the center coordinates of the two pressed positions and the interval between the pressed positions via the information acquiring unit, the center is the center coordinate on the display screen, and the interval between the pressed positions is the diameter. If a plurality of selectable components are displayed in the circle area and one of these components has already been selected, the selected component is replaced with Select another component displayed in the circle area.

  For example, when selectable components are displayed adjacent to each other, or when some of these components are overlapped, touch the position where these components are displayed. Therefore, it is difficult to select a component. However, by having the configuration according to claim 9, it becomes easy to select a component displayed adjacently or a component displayed in a partially overlapped state, and a resistance film type It becomes possible to improve the usability of the touch panel.

  In addition, as described in claim 10, a program for causing a control device of the control device according to any one of claims 1 to 9 to function as a control unit is executed by a computer built in the control device. It may be.

  If it is as described in claim 10, for example, the program is recorded on a computer-readable recording medium such as a magneto-optical disk, CD-ROM, hard disk, ROM, RAM, etc. It can function as a control device by being loaded into a computer and starting up. Further, since the program can be distributed using a network, the function of the control device can be easily improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments of the present invention are not limited to the following embodiments, and various forms can be adopted as long as they belong to the technical scope of the present invention.

[Description of configuration]
FIG. 1 is a block diagram showing a configuration of a navigation device 10 equipped with a four-wire resistive touch panel. The navigation device 10 includes an operation unit 100, a display unit 200, an audio output unit 300, a storage unit 400, a map data input device 500, a control unit 600, a position detector 700, and an external communication device 800.

  The operation unit 100 is a part that receives various instructions from the user, and includes a transparent panel that is an input receiving part of the resistive touch panel, a resistive film control unit that controls the resistive film provided on the panel, and the like. It is configured. This panel is disposed so as to cover the display unit 200. The operation unit 100 is connected to the control unit 600 via a serial bus, and transmits the panel pressing position by the user to the control unit 600 at a cycle of 100 ms. Details of the operation unit 100 will be described later.

The display unit 200 is a part that performs various displays, and specifically includes an LCD, an organic EL, or the like.
The sound output unit 300 is a part that outputs sound based on a signal input from the control unit 600.

The storage unit 400 includes a device (for example, an HDD) that does not require a storage holding operation, and can store various types of information.
The map data input device 500 is a device for inputting various data such as map data used when performing route guidance and the like, and facility search information used when searching for a predetermined facility. As a storage medium for these data, a CD-ROM, a DVD-ROM, or the like is generally used because the amount of data is enormous.

  The control unit 600 is configured around a well-known microcomputer comprising a CPU, ROM, RAM, I / O and a bus line connecting them, and each part of the navigation device 10 according to a program stored in the ROM. This is the part that controls Based on the map data acquired via the map data input device 500, the control unit 600 specifies a route to the user's destination, provides route guidance to the destination, and the like by a known method. The control unit 600 includes a communication unit (not shown) that communicates with the operation unit 100 via a serial bus.

  The position detector 700 receives a radio wave from a GPS (Global Positioning System) artificial satellite via a GPS antenna (not shown) and detects the position, direction, speed, etc. of the vehicle. A gyroscope 720 that detects the magnitude of the rotational motion that is applied, and a distance sensor 730 that detects the distance traveled from the longitudinal acceleration of the vehicle or the like. Since these have errors of different properties, they are configured to be used while complementing each other.

  The external communication device 800 acquires various information from an information center of VICS via an optical beacon or a radio beacon installed on the roadside. Various information transmitted by FM multiplex broadcasting is also acquired.

  Next, details of the operation unit 100 will be described with reference to the block diagram shown in FIG. The operation unit 100 includes a resistance film control unit 110, a first resistance film control circuit 120, a second resistance film control circuit 130, a third resistance film control circuit 140, and a fourth resistance film control circuit. 150, a panel 160, and a communication unit 170.

  The resistance film control unit 110 is configured around a known microcomputer including a CPU, ROM, RAM, I / O and a bus line connecting these, and performs processing according to a program stored in the ROM. It is. The resistance film control unit 110 includes AXO1, AXO2, AYO1, and AYO2 that are output ports. The resistance film control unit 110 has an AD converter, and has AD input ports AXT1, AXT2, AYT1, and AYT2. Further, the ROM included in the resistance film control unit 110 is used to specify the current flowing through the contact point between the X-axis direction resistance film 161 and the Y-axis direction resistance film 162 when the user presses down one part of the panel 160. A current value table, which is a table, is stored.

The communication unit 170 is a part that communicates with the control unit 600 via a serial bus.
The panel 160 is a transparent rectangular plate-shaped part that is an input receiving part of a four-wire resistive touch panel. The panel 160 is disposed such that the X-axis direction resistance film 161 and the Y-axis direction resistance film 162, which are rectangular resistance films, face each other with a minute gap therebetween, and when the panel 160 is pressed by the user, A contact is formed between these resistive films. In the panel 160 shown in FIG. 2, the X-axis direction resistance film 161 and the Y-axis direction resistance film 162 are drawn so as to be different for the sake of explanation. However, actually, these resistance films have the same shape, and one resistance film is arranged so as to cover the other resistance film.

  The X-axis direction resistance film 161 is provided with a first electrode 161a and a second electrode 161b along two sides perpendicular to the longitudinal direction. The Y-axis direction resistance film 162 is provided with a third electrode 162a and a fourth electrode 162b along two sides parallel to the longitudinal direction. The X axis is set to be orthogonal to the side corresponding to the first electrode 161a, and the Y axis is set to be orthogonal to the side corresponding to the third electrode 162a. The electrodes provided on each resistance film are connected to the AD input port of the resistance film control unit 110. The first electrode 161a is connected to AXT1, the second electrode 161b is connected to AXT2, the third electrode 162a is connected to AYT1, and the fourth electrode 162b is connected to AYT2.

  The first resistance film control circuit 120 or the like is a circuit for applying a voltage to the electrodes provided in the X-axis direction resistance film 161 or the Y-axis direction resistance film 162 and specifying the voltage generated in each electrode. It is. The first resistance film control circuit 120 is connected to the first electrode 161a included in the X-axis direction resistance film 161, and the second resistance film control circuit 130 is connected to the second electrode 161b included in the X-axis direction resistance film 161. The resistance film control circuit 140 corresponds to the third electrode 162a included in the Y-axis direction resistance film 162, and the fourth resistance film control circuit 150 corresponds to the fourth electrode 162b included in the Y-axis direction resistance film 162. .

  The configuration of the first resistance film control circuit 120 will be described. The first resistance film control circuit 120 includes a switching circuit 121, a 5V constant voltage source 123, and a resistor 122 connected to the constant voltage source 123. The switching circuit 121 is based on the output of the AXO 1 that is the output port of the resistance film control unit 110, the first electrode 161 a of the X-axis direction resistance film 161, the GND, and the resistor 122 connected to the constant voltage source 123. Is a circuit for controlling the connection. Specifically, the switching circuit 121 connects the first electrode 161a and GND when AXO1 is Lo output (0V output), and connects the first electrode 161a when AXO1 is Hi output (5V output). A resistor 122 is connected. When AXO1 is OPEN, the switching circuit 121 does not connect the first electrode 161a to the GND and the resistor 122.

  The second resistance film control circuit 130 has the same configuration as the first resistance film control circuit 120. Similar to the switching circuit 121 of the first resistive film control circuit 120, the switching circuit 121 of the second resistive film control circuit 130 is based on the output of the AXO 2 that is the output port of the resistive film control unit 110, The connection between the second electrode 161 b of the film 161 and the resistor 122 connected to the GND and the constant voltage source 123 is controlled.

  The third resistance film control circuit 140 also has the same configuration as the first resistance film control circuit 120. Similar to the switching circuit 121 of the first resistive film control circuit 120, the switching circuit 121 of the third resistive film control circuit 140 is based on the output of AYO1, which is an output port of the resistive film control unit 110, and has a resistance in the Y-axis direction. The connection between the third electrode 162a of the film 162 and the resistor 122 connected to the GND and the constant voltage source 123 is controlled.

  The fourth resistance film control circuit 150 also has the same configuration as the first resistance film control circuit 120. Similar to the switching circuit 121 of the first resistive film control circuit 120, the switching circuit 121 of the fourth resistive film control circuit 150 is based on the output of AYO2, which is an output port of the resistive film control unit 110, and has a resistance in the Y-axis direction. The connection between the fourth electrode 162 b of the film 162 and the resistor 122 connected to the GND and the constant voltage source 123 is controlled.

  Here, a current value table stored in the ROM included in the resistance film control unit 110 will be described. When the user presses the panel 160, the value of the current flowing through the contact between the resistive films constituting the panel 160 varies depending on the pressing position of the user. The current value table is a table for specifying the current value flowing through the contact point between the resistive films constituting the panel 160 according to the pressed position when the user presses one part of the panel 160. FIG. 3 shows a table showing the configuration of the current value table.

  The current value table is composed of “pressed coordinates” which is an item indicating the pressing position of the user's panel 160 in XY coordinates, and “current values” which is an item indicating the current flowing through the resistive film constituting the panel 160. Yes. The resistance film control unit 110 can specify the current value Ixy flowing through the contact point between the resistance films when one portion of the panel 160 is pressed by referring to the current value table.

[Description of operation]
[About processing to specify center coordinates, etc.]
Next, when the operation unit 100 of the navigation device 10 is simultaneously pressed by the user at two places on the panel 160 constituting the operation unit 100, the center coordinates of the two push positions and the two push positions are displayed. A process performed when specifying the distance will be described.

(1) Process for Controlling Resistive Film FIG. 4 shows a process in which the resistive film control unit 110 applies a voltage to the electrodes included in the X-axis direction resistive film 161 and the Y-axis direction resistive film 162 constituting the panel 160. In the voltage application process, a timing chart 1000 showing an output waveform of the resistance film control unit 110 is described.

  This timing chart 1000 shows one cycle of the output waveform for controlling the resistive film, and shows the state of the output port of the resistive film control unit 110 and the state of the AD input port. This one cycle is composed of four phases. Each phase is executed for 10 ms, and each phase is executed at intervals of 5 ms. Further, the resistance film control unit 110 executes one cycle at a cycle of 100 ms.

The processing performed in each phase will be specifically described.
(1-1) About Phase 1 Phase 1 measures the voltage value generated in the resistance generated between the second electrode 161b provided on the X-axis resistance film 161 and the pressed position. This is a phase for specifying the pressed position with the side corresponding to the second electrode 161b as a reference. In phase 1, the resistance film control unit 110 performs the following processing.
AYO1 is Hi output (5V output), AXO2 is Lo output (0V output), and the third electrode 162a provided on the Y-axis direction resistance film 162 and the X-axis direction resistance film 161 are provided. A voltage is applied between the second electrode 161b.
AXO1 is an OPEN output, and the first electrode 16 provided on the X-axis resistance film 161
The connection between 1a, GND, and the resistor 122 of the first resistance film control circuit 120 is opened.
The fourth electrode 16 provided on the Y-axis direction resistance film 162 with AYO2 as the OPEN output.
The connection between 2b, GND, and the resistor 122 of the fourth resistance film control circuit 150 is opened.
-At the timing immediately before 10 ms from the start of Phase 1, the AD value (V
1L), the AD value (V1H) from AYT1 and the AD value (V1X) from AXT1 are read out and stored in the RAM.
The distance between the second electrode 161b and the pressed position is a value proportional to the voltage generated between the pressed position and the second electrode 161b. Therefore, the pressed position Xb with respect to the side corresponding to the second electrode 161b is calculated by the following procedure.

Vxb = (V1X−V1L) / (V1H−V1L), Xb = fxb (Vxb)
Here, the function fxb is based on Vxb and ranges from 0 to 255, and the second electrode 161b.
Is a function for calculating coordinates for specifying the pressed position in the X-axis direction with reference to the side corresponding to.

(1-2) Phase 2 Phase 2 measures the voltage value generated in the resistance generated between the fourth electrode 162b provided on the Y-axis direction resistance film 162 and the pressed position. This is a phase for specifying the pressed position with the side corresponding to the fourth electrode 162b as a reference. In phase 2, the resistance film control unit 110 performs the following processing.
AXO1 is Hi output (5V output), AYO2 is Lo output (0V output), and is provided on the first electrode 161a provided on the X-axis direction resistance film 161 and the Y-axis direction resistance film 162. A voltage is applied between the fourth electrode 162b and the fourth electrode 162b.
The third electrode 16 provided on the Y-axis direction resistance film 162 with AYO1 as an OPEN output
The connection between 2a, GND, and the resistor 122 of the third resistive film control circuit 140 is opened.
AXO2 is an OPEN output, and the second electrode 16 provided on the X-axis direction resistance film 161
The connection between 1b, GND, and the resistor 122 of the second resistance film control circuit 130 is released.
-At the timing immediately before 10 ms from the start of Phase 2, the AD value (V
2L), the AD value (V2H) from AXT1 and the AD value (V2Y) from AYT1 are read out and stored in the RAM.
The distance between the fourth electrode 162b and the pressed position is a value proportional to the voltage generated between the pressed position and the fourth electrode 162b. Therefore, the pressed position Yb with respect to the side corresponding to the fourth electrode 162b is calculated by the following procedure.

Vyb = (V2Y−V2L) / (V2H−V2L), Yb = fyb (Vyb)
Here, the function fyb is based on Vyb and ranges from 0 to 255, and the fourth electrode 162b.
Is a function for calculating coordinates for specifying the pressed position in the Y-axis direction with reference to the side corresponding to.

(1-3) Phase 3 Phase 3 measures the voltage value generated in the resistance generated between the first electrode 161a provided on the X-axis direction resistance film 161 and the pressed position. This is a phase for specifying the pressed position with the side corresponding to the first electrode 161a as a reference. In phase 3, the resistance film control unit 110 performs the following processing.
・ AYO1 is Hi output (5V output), AXO1 is Lo output (0V output), and it is provided on the third electrode 162a provided on the Y-axis resistance film 162 and the X-axis resistance film 161. A voltage is applied between the first electrode 161a.
AXO2 is an OPEN output, and the second electrode 16 provided on the X-axis direction resistance film 161
The connection between 1b, GND, and the resistor 122 of the second resistance film control circuit 130 is released.
The fourth electrode 16 provided on the Y-axis direction resistance film 162 with AYO2 as the OPEN output.
The connection between 2b, GND, and the resistor 122 of the fourth resistance film control circuit 150 is opened.
・ At the timing immediately before 10 ms from the start of Phase 3, the AD value (V
3L), the AD value (V3H) from AYT1 and the AD value (V3X) from AXT2 are read out and stored in the RAM.
The distance between the first electrode 161a and the pressed position is a value proportional to the voltage generated between the pressed position and the first electrode 161a. Therefore, the pressed position Xa with respect to the side corresponding to the first electrode 161a is calculated by the following procedure.

Vxa = (V3X−V3L) / (V3H−V3L), Xa = fxa (Vxa)
Here, the function fxa is based on Vxa and ranges from 0 to 255, and the first electrode 161a.
Is a function for calculating coordinates for specifying the pressed position in the X-axis direction with reference to the side corresponding to.

(1-4) Phase 4 Phase 4 measures the voltage value generated in the resistance generated between the third electrode 162a provided in the Y-axis direction resistance film 162 and the pressed position. This is a phase for specifying the pressed position with the side corresponding to the third electrode 162a as a reference. In phase 4, the resistance film control unit 110 performs the following processing.
AXO1 is Hi output (5V output), AYO1 is Lo output (0V output), and is provided on the first electrode 161a provided on the X-axis direction resistance film 161 and the Y-axis direction resistance film 162. A voltage is applied between the third electrode 162a and the third electrode 162a.
The fourth electrode 16 provided on the Y-axis direction resistance film 162 with AYO2 as the OPEN output.
The connection between 2b, GND, and the resistor 122 of the fourth resistance film control circuit 150 is opened.
AXO2 is an OPEN output, and the second electrode 16 provided on the X-axis direction resistance film 161
The connection between 1b, GND, and the resistor 122 of the second resistance film control circuit 130 is released.
-At the timing immediately before 10 ms from the start of Phase 4, the AD value (V
4L), the AD value (V4H) from AXT1 and the AD value (V4Y) from AYT2 are read out and stored in the RAM.
The distance between the third electrode 162a and the pressed position is a value proportional to the voltage generated between the pressed position and the third electrode 162a. Therefore, the pressed position Ya with respect to the side corresponding to the third electrode 162a is calculated by the following procedure.

Vya = (V4Y−V4L) / (V4H−V4L), Ya = fya (Vya)
Here, the function fya is based on Vya and ranges from 0 to 255, and the third electrode 162a.
Is a function for calculating coordinates for specifying the pressed position in the Y-axis direction with reference to the side corresponding to.

(2) Processing for calculating pressed coordinates and the like Next, the pressed coordinates and the like calculation processing for calculating the pressed coordinates and the like indicating the pressed position of the panel 160 and transmitting the calculated pressed coordinates and the like to the control unit 600 are shown in FIG. This will be described using the described flowchart. In the pressed coordinate calculation process, when one position of the panel 160 is pressed by the user, the pressed coordinates indicating the pressed position of the user are calculated. When two positions on the panel 160 are pressed by the user, two positions are calculated. The center coordinates of the pressing position and the distance between the two pressing positions are calculated. This process is executed after phase 4 of the voltage application process is executed until phase 1 of the next cycle is started.

In S2010, the resistance film control unit 110 of the operation unit 100 calculates the pressed coordinates (x, y) according to the following procedure, and the process proceeds to S2020.
・ Xb calculated in Phase 1 of the voltage application process is converted into coordinates specifying the pressed position in the X-axis direction with the side corresponding to the first electrode 161a as a reference, and the converted coordinates and the voltage application process are converted. Let x be the average value of Xa calculated in Phase 3.

x = (Xa + 255−Xb) / 2
・ Yb calculated in Phase 2 of the voltage application process is converted into coordinates specifying the pressed position in the Y-axis direction with reference to the side corresponding to the third electrode 162a, and the converted coordinates and the voltage application process are converted. The average value with Ya calculated in Phase 4 is y.

y = (Ya + 255−Yb) / 2
In S2020, the resistance film control unit 110 calculates the current value I1 flowing through the resistor 122 of the first resistance film control circuit 120 in the phase 1 of the voltage application process according to the following procedure, thereby obtaining the X-axis direction resistance film. The current flowing through the contact point between 161 and the Y-axis direction resistance film 162 is calculated. The resistance value of the resistor 122 is Rs. Then, the process proceeds to S2030.

I1 = (5-V1H) / Rs
In S2030, the resistance film control unit 110 determines whether or not the panel 160 is pressed based on the current value I1 calculated in S2020. Specifically, when the current value I1 is less than a predetermined value, the resistance film control unit 110 determines that the panel 160 has not been pressed (S2030: Yes), proceeds to S2050, and proceeds to the current value I1. Is equal to or greater than a predetermined value, it is determined that the panel 160 is pressed (S2030: No), and the process proceeds to S2040.

  In S2040, the resistance film control unit 110 determines whether or not three or more locations on the panel 160 are pressed based on the current value I1 calculated in S2020. Specifically, the resistance film control unit 110 determines whether the X-axis direction resistance film 161 and the Y-axis direction resistance film 162 are pressed when only one position of the pressed coordinates (x, y) calculated in S2010 is pressed. The current value Ixy of the current flowing through the contact is specified based on the current table stored in the ROM included in the resistance film control unit 110. When the difference ΔI between the current value Ixy and the current value I1 calculated in S2020 is equal to or greater than Ia, the resistance film control unit 110 determines that three or more locations on the panel 160 are pressed (S2040). : Yes), the process proceeds to S2050. When ΔI is less than Ia, it is determined that one or two portions of the panel 160 are pressed (S2040: No), and the resistance film control unit 110 shifts the processing to S2060.

  In S2050, which shifts to the case where the panel 160 is not pressed, or when three or more places on the panel 160 are pressed, the resistance film control unit 110 communicates that the panel 160 is not pressed as operation information. It transmits to the control part 600 via the part 170, and complete | finishes a press coordinate etc. calculation process.

  In S2060 that is shifted when one or two positions of the panel 160 are pressed, the resistance film control unit 110 determines whether two positions of the panel 160 are pressed based on ΔI. Specifically, when ΔI is equal to or greater than Ib, it is determined that two places on the panel 160 are pressed (S2060: Yes), and the resistance film control unit 110 shifts the process to S2070. When ΔI is less than Ib, it is determined that one part of the panel 160 is pressed (S2060: No), and the resistance film control unit 110 shifts the process to S2100.

  In S2070, the resistive film control unit 110 sets the pressed coordinates (x, y) calculated in S2010 as the center coordinates (Xc, Yc) of the two pressed positions, and the process proceeds to S2080.

In S2080, the resistance film control unit 110 performs the following processes (a) to (d) to calculate d, which is the interval between the two pressed positions, and shifts the process to S2090. The resistance values per unit length of the X-axis direction resistance film 161 and the Y-axis direction resistance film 162 are set to k.
(A) Resistance value Rxc1 between the center coordinate and the first electrode 161a, resistance value Rxc2 between the center coordinate and the second electrode 161b, and resistance between the center coordinate and the third electrode 162a The value Ryc is calculated according to the following procedure.
Rxc1 = k · Xa, Rxc2 = k · Xb, Ryc = k · Yc
(B) The resistance value R1 between the third electrode 162a of the Y-axis direction resistance film 162 and the first electrode 161a of the X-axis direction resistance film 161 in the phase 3 of the voltage application process is determined by the following procedure. calculate.
R1 = (V3H−V3L) / I3
Note that I3 is a current value of a current flowing through the resistor 122 of the third resistive film control circuit 140 in the phase 3 of the voltage application process, and is calculated by the following procedure.
I3 = (5-V3H) / Rs (Rs is the resistance value of the resistor 122)
(C) The resistance value R2 between the third electrode 162a of the Y-axis direction resistance film 162 and the second electrode 161b of the X-axis direction resistance film 161 in the phase 1 of the voltage application process is determined by the following procedure. calculate.
R2 = (V1H−V1L) / I1
Note that I1 is the current value of the current flowing through the resistor 122 of the first resistive film control circuit 120 in the phase 1 of the voltage application process calculated in S2020.
(D) By substituting Rxc1 = k · Xa, Rxc2 = k · Xb, Ryc, R1, and R2 into Equation 5, the distance d between the two pressed positions is calculated.

In S2090, the resistance film control unit 110 operates, via the communication unit 170, the fact that two positions of the panel 160 are pressed, the center coordinates (Xc, Yc), and the interval d between the two pressed positions. Information is transmitted to the control unit 600 via the communication unit 170, and the calculation process of the pressed coordinates and the like is terminated.

  In S2100 performed when one part of the panel 160 is pressed, the resistive film control unit 110 determines that one part of the panel 160 is pressed and the pressed coordinates (x, y) calculated in S2010. Operation information is transmitted to the control unit 600 via the communication unit 170, and the calculation process of the pressed coordinates and the like is terminated.

[Processing based on center coordinates, etc.]
The control unit 600 of the navigation device 10 acquires operation information that is information such as pressed coordinates of the panel 160 constituting the operation unit 100 from the operation unit 100 via the serial bus at a cycle of 100 ms. Then, a chattering process is performed on the acquired operation information to confirm the operation information. This chattering process will be specifically described. For example, when the received operation information indicates that two places on the panel 160 are pressed four times in succession, it is considered that the two places are pressed, and these operations are performed. The coordinates obtained by averaging the X and Y elements of the center coordinates (Xc, Yc) included in the information are used as the average value of the pressed position interval d and the determined center coordinate and pressed position interval. Also good. Also, for example, when the received operation information indicates that one part of the panel 160 has been pressed four times in succession, it is considered that the one-point press has been confirmed, and the press coordinates included in these operation information The coordinates obtained by averaging the X and Y elements of (x, y) may be set as the confirmed pressed coordinates. And when pushing two places and pushing one place are not decided, you may consider that operation is not performed.

  Here, a description will be given of processing executed by control unit 600 based on operation information determined through chattering processing when two locations on panel 160 are simultaneously pressed by the user.

(1) Processing for Enlarging Map Image While two places on the panel 160 constituting the operation unit 100 are being pressed at the same time, the control unit 600 is based on the center coordinates of the two pressed positions and the pressed position interval. The process of enlarging the map image displayed on the display unit 200 will be described with reference to the flowchart shown in FIG. In FIG. 6, when the control unit 600 displays a map image on the display unit 200 based on the map data input from the map data input device 500, a map image update process for updating the map image being displayed. The flowchart of is described. This map image update process is performed when the operation information is confirmed.

  In step S3010, the control unit 600 determines whether or not the panel 160 has been pressed at two locations based on the previously determined operation information and the newly determined operation information. Specifically, if the previously confirmed operation information indicates that the two-point press has not been performed, and the currently determined operation information indicates that the two-point press has been performed, the panel It is determined that the two-point pressing of 160 has started (S3010: Yes), and the control unit 600 shifts the process to S3020. If the previously determined operation information indicates that the two-point press has been performed, or if the operation information determined this time indicates that the two-point press has not been performed (S3010: No), the control is performed. The unit 600 shifts the process to S3030.

  In S3020, the control unit 600 generates image data obtained by enlarging the displayed map image based on the center coordinates of the two pressed positions and the pressed position interval, and displays the enlarged map image on the display unit 200. . This process will be specifically described with reference to a screen 4000 before enlargement shown in FIG. 7A and a screen 4100 after enlargement shown in FIG. 7B. A map image is displayed on these screens. The enlarged screen 4100 is an image obtained by enlarging a circular area 4010 on the screen 4000 before enlargement with the center coordinates of the two pressed positions as the center and the pressed position interval as the diameter. The enlarged screen 4100 changes the display range of the displayed map image so that the center of the circle area 4010 is the center of the screen, and the diameter of the circle area 4010 matches the length of the screen in the vertical direction. It is the screen which expanded the map image currently displayed by magnification. Then, the control unit 600 displays the scale scale of the map image on the enlarged screen 4100 at the lower part of the screen, and ends the map image update process.

  In S3030, control unit 600 determines whether or not the two-point pressing on panel 160 has been completed based on the previously determined operation information and the newly determined operation information this time. Specifically, if the previously confirmed operation information indicates that a two-point press has been performed, and the currently determined operation information indicates that a two-point press has not been performed, the panel It is determined that the two-pressing of 160 has ended (S3030: Yes), and the control unit 600 shifts the process to S3040. When the previously determined operation information indicates that the two-point press has not been performed, or when the operation information determined this time indicates that the two-point press has been performed (S3030: No), the control is performed. The unit 600 ends the map image update process.

  In S3040, the control unit 600 displays the pre-enlargement screen 4000, which is the map image displayed before the two-point press is started, on the display unit 200 again, and ends the map image update process.

(2) Processing for changing the guide route Next, when two places on the panel 160 constituting the operation unit 100 are pressed at the same time when the guide route related to the route guide is displayed on the display unit 200, the control is performed. Guide route switching processing in which the unit 600 changes the guide route will be described with reference to the flowchart shown in FIG. This process is executed when the control unit 600 displays the guidance route on the display unit 200 and the panel 160 is confirmed to be pressed at two places.

  In step S5010, the control unit 600 displays on the screen of the display unit 200 whether a guidance route related to route guidance is displayed in a circular area centered on the center coordinates of the two pressed positions and having a pressed position interval as a diameter. Determine whether or not. When the guidance route is displayed in the circle area (S5010: Yes), the control unit 600 shifts the process to S5020. When the guide route is not displayed in the circle area (S5010: No), the control unit 600 ends the guide route change process.

  In step S5020, the control unit 600 checks whether there is a road parallel to the guide route in the vicinity of the guide route in a circular area having the center coordinates of the two pressed positions and the pressed position interval as a diameter. This process will be specifically described with reference to the first guide route screen 6000 shown in FIG. The first guidance route screen 6000 is a screen including a guidance route related to route guidance. Further, a circle area 6010 on the first guidance route screen 6000 is an area having the center of the coordinates of the two pressed positions and the diameter of the pressed position. A road indicated by a white line passing through the circle area 6010 is a first guidance route 6020 related to route guidance. The controller 600 checks whether there is a road passing through the circle area 6010 in parallel with the first guide route 6020. Since the first guidance route screen 6000 includes an alternative road 6030 that is a road that passes through the circle region 6010 in parallel with the first guidance route 6020, the control unit 600 guides the circle region. It is determined that there is a road parallel to the guide route in the vicinity of the route. If there is a road parallel to this guidance route in the vicinity of the guidance route in the circle area (S5020: Yes), the control unit 600 shifts the process to S5030. When there is no road in parallel with the guide route in the vicinity of the guide route in the circle area (S5020: No), the control unit 600 ends the guide route switching process.

  In S5030, control unit 600 causes display unit 200 to display an inquiry message as to whether or not to switch the guide route. Specifically, the control unit 600 causes the display unit 200 to display an inquiry message 6110 included in the guidance route change message screen 6100 illustrated in FIG. And the control part 600 transfers a process to S5040.

  In step S5040, the control unit 600 receives a selection as to whether or not to switch the guide route from the user via the operation unit 100. When the selection to switch the guide route is received, the control unit 600 shifts the process to S5050. When the selection not to switch the guide route is received, the control unit 600 shifts the guide route switching process.

  In S5050, the control unit 600 identifies a new guide route including the alternative road 6030, and causes the display unit 200 to display the second guide route screen 6200 illustrated in FIG. This second guidance route screen 6200 is a screen for displaying a second guidance route 6210 which is a newly specified guidance route. In the second guidance route screen 6200, the second guidance route 6210 is outlined. It is displayed with a line. Then, the control unit 600 ends the guide route switching process.

[effect]
The operation unit 100 of the navigation device 10 according to the present embodiment includes the pressed coordinates calculated based on the voltage generated between the first electrode 161a of the X-axis direction resistive film 161 constituting the panel 160 and the pressed position, and the second The intermediate position of the pressed coordinate calculated based on the voltage generated between the electrode 161b and the pressed position is the X element of the pressed coordinate. Further, it is generated between the pressed coordinates calculated based on the voltage generated between the third electrode 162a of the Y-axis direction resistance film 162 constituting the panel 160 and the pressed position, and between the fourth electrode 162b and the pressed position. The intermediate position with the pressed coordinate calculated based on the voltage is set as the Y element of the pressed coordinate (S2010). Therefore, when two places on the panel 160 are pressed simultaneously, the center coordinates (Xc, Yc) of the two pressed positions can be calculated.

  Further, the operation unit 100 determines how many positions on the panel 160 the user is pressing based on the current value I1 flowing through the contact point between the X-axis direction resistance film 161 and the Y-axis direction resistance film 162 (S2030, S2040). , S2060). Therefore, it is possible to accurately determine whether or not the user is pressing two places on the panel 160.

  If it is determined that the user is pressing two places on the panel 160 (S2060: Yes), the operation unit 100 calculates the two pressed position intervals d (S2090), and determines the two pressed positions. The center coordinates (Xc, Yc) and the pressed position interval d are transmitted to the control unit 600 of the navigation device 10. Therefore, when the user presses two places on the panel 160, the control unit 600 can execute processing based on the center coordinates of the two pressed positions and the pressed position interval, and the operation of the navigation device 10 can be performed. Variations can be increased.

  In addition, when two places on the panel 160 are pressed while the map image is displayed on the display unit 200, the control unit 600 displays the map image being displayed based on the center coordinates of the two pressed positions and the pressed position interval. The enlarged image is displayed on the display unit 200 (S3020). Therefore, a specific portion of the map image displayed on the display unit 200 can be easily enlarged to a preferred magnification, and the usability of the navigation device 10 can be improved.

  In addition, when two places on the panel 160 are pressed while the guidance route related to the route guidance is displayed on the display unit 200, the control unit 600 uses the center coordinates of the two pressed positions as the center, and the pressed position interval. If there is an alternative road that is a road parallel to the guide route in a circle area having a diameter of (S5020: Yes), an inquiry message as to whether to switch the guide route to the alternative road is displayed (S5030). When an operation for switching the guide route is received from the user (S5040: Yes), the control unit 600 identifies a new route including the alternative road and displays it on the display unit 200 (S5050). For example, when the user selects an alternative road by touching the alternative road via the panel 160 and sets a new guide route including the selected alternative road, the alternative road and the guide route are adjacent to each other. It is possible to assume a situation where it is difficult to touch only the alternative road. In such a case, by having the above-described function, it is easy to select an alternative road adjacent to the guide route, and usability of the navigation device 10 can be improved.

[Other Embodiments]
(1) In this embodiment, in the 4-wire resistive touch panel, the center coordinates and the pressing position interval when pressing two places are calculated. However, even in the case of a 5-wire resistive touch panel or other types of resistive touch panels, it is possible to calculate the center coordinates when two places are pressed by applying the present invention. In addition, even in the case of other types of resistive touch panels, if the electrodes are provided along the sides of the resistive film, the pressing position interval at the time of pressing two places can be calculated by applying the present invention. Is possible.

  (2) In S3020 of the pressed coordinate calculation process, the control unit 600 determines the diameter of a circle area having a center at the center coordinates when two places are pressed and having a pressed position interval as a diameter in the map image before enlargement. The map image is enlarged at a magnification that can match the length in the vertical direction. However, the controller 600 may enlarge the map image at a pre-fixed magnification when detecting a two-point press. Even if it has such a structure, since the predetermined position of a map image can be expanded easily, the usability of the navigation apparatus 10 can be improved. Further, the processing can be simplified as compared with the case of enlarging the map image with a magnification based on the pressed position interval.

  (3) In S5010 and S5020 of the guidance route switching process, the control unit 600 performs a route in a circle area on the screen of the display unit 200 with the center coordinates of the two pressed positions as the center and the pressed position interval as the diameter. The presence / absence of a guidance route for guidance and the presence / absence of an alternative road parallel to the guidance route are checked. However, the control unit 600 determines the presence / absence of a guide route and the presence / absence of an alternative road in a circular area having a predetermined diameter centered on the center coordinates of two pressed positions on the screen of the display unit 200. You may do it. Even in the case of such a configuration, the user can easily switch the guide route, and thus the usability of the navigation device 10 can be improved. Further, the processing can be simplified as compared with the case where it is determined whether or not a guide route or the like is included in a circular area having a diameter of the pressed position interval.

[Correspondence with Claims]
The correspondence between the terms used in the description of the above embodiment and the terms used in the description of the claims is shown.

  The operation unit 100 corresponds to a control device, and the resistance film control unit 110 corresponds to a control unit. The first resistance film control circuit 120, the second resistance film control circuit 130, the third resistance film control circuit 140, and the fourth resistance film control circuit 150 correspond to voltage application means.

The AD converter included in the resistance film control unit 110 corresponds to a first voltage value specifying unit and a second voltage value specifying unit.
Further, the resistor 122 of the first resistance film control circuit 120 and the resistance film control unit 110 correspond to the first current value specifying unit and the third current value specifying unit, and the communication unit 170 serves as the sending unit. Equivalent to.

The resistor 122 of the first resistance film control circuit 120, the resistor 122 of the third resistance film control circuit 140, and the resistance film control unit 110 correspond to the second current value specifying means.
Further, the side of the X-axis direction resistance film 161 corresponding to the first electrode 161a and the side of the Y-axis direction resistance film 162 corresponding to the third electrode 162a correspond to the first side, respectively. Further, the side of the X-axis direction resistance film 161 corresponding to the second electrode 161b and the side of the Y-axis direction resistance film 162 corresponding to the fourth electrode 162b respectively correspond to the second side.

  In addition, the process performed in each phase of the voltage application process corresponds to the pressed position specifying process, and the process of calculating x and y in S2010 of the voltage applying process and the pressed coordinate etc. calculating process is the intermediate position specifying process. It corresponds to.

  Xa and Ya correspond to the first pressed position, Xb and Yb correspond to the second pressed position, and 255-Xb and 255-Yb correspond to the third pressed position. Further, the phase 2 and phase 4 processing of the voltage application processing corresponds to the first step, and the processing of the phase 1 and phase 3 corresponds to the second step. Further, the process of calculating x and y in S2010 of the pressed coordinate calculation process corresponds to the third step.

Also, S2010 of the voltage application process and the pressed coordinate calculation process corresponds to the center coordinate calculation process.
The display unit 200 corresponds to a display screen, the control unit 600 corresponds to an image data generation device and an image data generation unit, the communication unit included in the control unit 600 corresponds to an information acquisition unit, and the navigation device 10 is an electronic device. Corresponds to the system.

The control unit 600 corresponds to an input reception device and a selection reception unit, and the first guide route 6020 and the alternative road 6030 in the circle region 6010 correspond to components.
Further, S2080 of the pressed coordinate calculation process corresponds to the pressed position interval specifying process. Further, the side of the Y-axis resistance film 162 corresponding to the third electrode 162a corresponds to the third side, and the side of the X-axis resistance film 161 corresponding to the first electrode 161a corresponds to the fourth side. The side of the X-axis direction resistance film 161 corresponding to the second electrode 161b corresponds to the fifth side. In addition, the processing of S2080 (a) of the pressed coordinate calculation processing is the fourth step, the processing of S2080 (b) is the fifth step, and the processing of (c) S2080 is the sixth step. The process of (d) of S2080 corresponds to the seventh step.

1 is a block diagram showing a configuration of a navigation device 10. FIG. 3 is a block diagram illustrating a configuration of an operation unit 100. FIG. It is a table | surface for demonstrating an electric current value table. 6 is a timing chart showing an output waveform to a resistive film constituting the panel 160 and the like. 5 is a flowchart for explaining processing for calculating a pressed coordinate or the like of panel 160. 5 is a flowchart for explaining a process of enlarging a map image by pressing the panel 160 at two places. It is a screen displayed when a map image is enlarged by pressing two places on the panel 160. 5 is a flowchart for explaining processing when a guide route is changed by pressing two places on a panel 160; It is a screen displayed when the guide route is changed by pressing the panel 160 at two places.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Navigation apparatus, 100 ... Operation part, 110 ... Resistive film control part, 120 ... 1st resistive film control circuit, 121 ... Switching circuit, 122 ... Resistor, 123 ... Constant voltage source, 130 ... 2nd resistive film control Circuit, 140 ... third resistance film control circuit, 150 ... fourth resistance film control circuit, 160 ... panel, 161 ... X-axis direction resistance film, 161a ... first electrode, 161b ... second electrode, 162 ... Y-axis direction resistance film, 162a ... third electrode, 162b ... fourth electrode, 170 ... communication unit, 200 ... display unit, 300 ... audio output unit, 400 ... storage unit, 500 ... map data input device, 600 ... Control unit 700 ... Position detector, 710 ... GPS receiver, 720 ... Gyroscope, 730 ... Distance sensor, 800 ... External communication device, 1000 ... Timing chart, 4000 ... Screen before enlargement, 010 ... Circle area, 4100 ... Enlarged screen, 6000 ... First guide route screen, 6010 ... Circle region, 6020 ... First guide route, 6030 ... Alternative road, 6100 ... Guide route change message screen, 6110 ... inquiry message, 6200 ... second guide route screen, 6210 ... second guide route.

Claims (10)

A rectangular resistive film provided with a plurality of electrodes, at least in the vicinity of the first side, which is an arbitrary side of the resistive film, and in the vicinity of the second side facing the first side A control device for controlling a resistive touch panel comprising the resistive film provided with electrodes,
The controller is
Voltage applying means for applying a voltage to the electrode provided on the resistive film;
When the resistance film is pressed, the first voltage value specification that specifies the voltage value generated in the resistance between the pressing position of the resistance film and the electrode to which the voltage is applied by the voltage applying means Means,
Via the voltage application means, a voltage is applied between the electrode provided in the vicinity of the predetermined side of the resistance film and the electrode provided in the vicinity of the other side, and the first The voltage value generated in the resistance between the pressed position and the electrode provided in the vicinity of the predetermined side is specified via the voltage value specifying means, and the voltage specified by the first voltage value specifying means Control means for performing a pressing position specifying process for specifying a pressing position based on the predetermined side of the resistance film based on a value;
The control means performs the pressing position specifying process related to the first side, specifies a first pressing position based on the first side, and relates to the second side. The second step of performing the pressing position specifying process and specifying the second pressing position with reference to the second side, and the second pressing position specified in the second step, An intermediate position specifying process having a third step of converting the first pressed position and the third pressed position into a third pressed position based on one side and specifying an intermediate position between the first pressed position and the third pressed position is executed. thing,
A control device characterized by. The control device according to claim 1,
When setting the X axis parallel to any side of the resistive film and setting the Y axis parallel to any side of the resistive film perpendicular to the X axis,
The control means specifies the X element at the intermediate position by executing the intermediate position specifying process with any side orthogonal to the X-axis as the first side, and any one orthogonal to the Y-axis. By executing the intermediate position specifying process using the side as the first side, the Y element at the intermediate position is specified, and the X element at the intermediate position and the Y element at the intermediate position are pressed in two places. Performing center coordinate calculation processing as the center coordinates of the position;
A control device characterized by. The control device according to claim 2,
The controller is
First current value specifying means for specifying a current value flowing through a contact generated at a pressing position of the resistance film when the resistance film is pressed by a user;
Sending means for sending the center coordinates calculated by the control means to the outside;
Further comprising
When the control unit detects a two-point pressing of the resistive film by the user based on the current value specified by the first current value specifying unit, the control unit calculates the two pressing positions calculated in the center coordinate calculation process. Sending center coordinates to the outside via the sending means;
A control device characterized by. An electronic system comprising: the control device according to claim 3; and an image data generation device that generates image data of an image to be displayed on a display screen covered by the resistive film included in the resistive touch panel.
The image data generation device includes information acquisition means for acquiring various information from the control device, and image data generation means for generating image data of an image to be displayed on the display screen,
The image data generation means, when acquiring the central coordinates of the two pressed positions via the information acquisition means, the image showing an enlarged image displayed in an area near the central coordinates on the display screen Generating image data,
An electronic system characterized by An electronic system comprising: the control device according to claim 3; and an input reception device that receives selection of a component of an image displayed on a display screen covered with the resistive film included in the resistive touch panel. And
The input reception device includes information acquisition means for acquiring various information from the control device, and selection reception means for receiving selection of the components of the image displayed on the display screen,
When the selection receiving unit acquires the central coordinates of the two pressed positions via the information acquisition unit, a plurality of selectable components are displayed in an area near the central coordinate on the display screen. And any one of these components has already been selected, it is displayed in the area near the center coordinate on the display screen instead of the selected component. Selecting a new component of
An electronic system characterized by The control device according to claim 2,
The resistive film provided in the resistive touch panel is provided with one or more electrodes along each side,
The control device includes: a second voltage value specifying unit that specifies a voltage value applied to the resistive film by the voltage applying unit; and a second current value specifying unit that specifies a current value flowing through the resistive film; Further comprising
The control means includes
The center coordinate calculation process is executed, and when the user presses two places on the resistance film, the center coordinates of the two pressed positions are calculated, and the calculated center coordinates and two points on the resistance film are calculated. A resistance value generated between an electrode provided along a third side orthogonal to the Y axis and a position indicated by the central coordinate, based on k which is a resistance value per unit length in between. Rxc1 which is a resistance value generated between a certain Ryc, an electrode provided along a fourth side orthogonal to the third side, and a position indicated by the central coordinate, and a third side A fourth step of calculating a resistance value Rxc2 generated between the electrode provided along the fifth side which is the other side orthogonal to the position indicated by the central coordinate;
A voltage is applied between the electrode provided along the third side and the electrode provided along the fourth side via the voltage application unit, and the second voltage is applied. The voltage value applied to the resistance film is specified via the value specifying means, the current value flowing through the resistance film is specified via the second current value specifying means, and the third side is A fifth step of calculating R1 which is a resistance value generated between the electrode provided along the fourth side and the electrode provided along the fourth side;
A voltage is applied between the electrode provided along the third side and the electrode provided along the fifth side via the voltage applying unit, and the second voltage is applied. The voltage value applied to the resistance film is specified via the value specifying means, the current value flowing through the resistance film is specified via the second current value specifying means, and the third side is A sixth step of calculating R2 which is a resistance value generated between the electrode provided along the fifth side and the electrode provided along the fifth side;
Performing a pressing position interval calculating process having a seventh step of calculating d, which is an interval between the pressing positions of the two positions of the resistive film, according to Equation 1.
A control device characterized by.
The control device according to claim 6,
The controller is
Third current value specifying means for specifying a current value flowing through a contact generated at the pressing position of the resistance film when the resistance film is pressed by a user;
Sending means for sending the center coordinates calculated by the control means to the outside;
Further comprising
When the control means detects a two-point pressing of the resistive film by the user based on the current value specified by the third current value specifying means, the two pressing positions calculated in the center coordinate calculation process Sending the center coordinates of and the interval between the pressed positions calculated in the pressed position interval calculating process to the outside via the sending means,
A control device characterized by. An electronic system comprising: the control device according to claim 7; and an image data generation device that generates image data of an image to be displayed on a display screen covered by the resistive film included in the resistive touch panel.
The image data generation device includes information acquisition means for acquiring various information from the control device, and image data generation means for generating image data of an image to be displayed on the display screen,
When the image data generating means acquires the center coordinates of the two pressed positions and the interval between the pressed positions via the information acquiring means, the image data generating means centered on the center coordinates on the display screen and the pressed Generating the image data indicating an image obtained by enlarging an image displayed in a circle area having a diameter of a position interval;
An electronic system characterized by An electronic system comprising: the control device according to claim 7; and an input reception device that receives selection of a component of an image displayed on a display screen covered by the resistive film included in the resistive touch panel. And
The input reception device includes information acquisition means for acquiring various information from the control device, and selection reception means for receiving selection of the components of the image displayed on the display screen,
When the selection receiving unit acquires the center coordinates of the two pressed positions and the interval between the pressed positions via the information acquiring unit, the selection position is centered on the center coordinates on the display screen, and the pressed position is If a plurality of selectable components are displayed in a circle area having a diameter of a distance between them, and one of these components has already been selected, the selected configuration In place of an element, newly selecting the other component displayed in the circle area on the display screen;
A control device characterized by.   The program for functioning a computer as a control means of the control apparatus in any one of Claims 1-9.