JP2003263274A - Display device with touch panel - Google Patents

Abstract

(57) [Problem] To provide a display device with a touch panel that can eliminate tailing and prevent erroneous recognition of the current touch detection mode. SOLUTION: While a touch panel 101 validates coordinates detected during reception of a touch pen signal output while a touch pen is touching, invalidates coordinates detected while no touch pen signal is received. And a personal computer 115 for controlling the display content of the display screen 104 in the touch pen control mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device with a touch panel, and more particularly to a display device with a touch panel that is touched by using a dedicated touch pen.

[0002]

2. Description of the Related Art Currently, a touch panel and a touch panel for detecting a position where the touch surface is touched by a finger or a pen as coordinates.
There is a display device with a touch panel that is configured integrally with a display device that is controlled by inputting coordinates detected on the touch panel. Further, as a touch panel used in a display device with a touch panel, there is one that uses an optical coordinate detection device that optically detects coordinates.

The optical coordinate detector irradiates the entire area of the touch surface with light, and irradiates the irradiated light with, for example, a CCD (Charge Coupl).
Light is received by a light receiving element such as an ed device). Then, the light receiving element detects that the light is blocked by the touch (touch) of the finger or the pen on the touch surface, and also determines the coordinates of the touched point (touch point). The optical coordinate detector has an advantage that the coordinates of the touch point can be detected with high accuracy while having a relatively simple structure.

However, in the optical coordinate detector, there is a slight distance between the light irradiated on the touch surface and the touch surface.
Therefore, the touch is detected by the pen or finger crossing the area irradiated with light, even though the operator is not touching it. When a touch is detected when no touch is actually made, a phenomenon generally called “tailing” may occur. The tailing is a particular problem in drawing characters, as will be described later.

FIGS. 16A and 16B are views for explaining the occurrence of tailing. In the optical coordinate detector, light 1602 is emitted along the touch surface 1603. As shown in (a), there is a slight distance d between the touch surface 1603 and the light 1602. For this reason, the optical coordinate detection device is provided with the pen 160 even when the touch is not actually made.
The touch is detected when 1 comes closer to the touch surface 1603 than the distance d. When the pen 1601 approaches the touch surface 1603, a touch may be detected and a line may be drawn.

FIG. 16B is a diagram showing the trailing that occurs when drawing a pine character. When inputting pine characters on the touch panel, draw a horizontal line of "tree" and then draw a vertical line. At this time, the pen 1601 touches the touch surface 1
The light 1602 may be blocked while moving from 603 to the drawing start position of the vertical line. As a result, a line that should not be drawn is drawn as indicated by A in the figure. Also,
After the vertical line of “tree” is drawn, if the pen 1601 blocks the light 1602 before moving to the next drawing start position, the line indicated by B in the drawing is drawn. As shown in points A and B, the tailing means pen 1
It refers to a phenomenon in which a line is drawn by blocking light 1602 by 601. The tailing causes the characters to lose their shape and makes the drawn characters difficult to read.

As a technique for eliminating the trailing that occurs in the coordinate detecting device, there is a display device with a touch panel equipped with a dedicated pen having a switch for outputting a signal when touched. However, such a display device with a touch panel can be touched by something other than a dedicated pen, such as a finger, so that a touch output can be detected by a signal output from the pen, and a touch can be made only by a coordinate detection device without using the signal. It is desirable to have both a detection mode and a detection mode. A display device with a touch panel that detects a touch by a signal output from a conventional pen is
A switch for switching the mode is provided on the device side, and the mode of touch detection is switched by switching this switch.

[0008]

However, in the above-described conventional display device with a touch panel, the operator switches the touch detection mode by switching a switch provided in the main body of the display device with a touch panel. Touching the touch panel functions in the same manner as clicking (right click, left click, double click). In particular, software that is currently used for general purposes is based on click operation, so if you make a mistake in the currently set touch detection mode,
There is a problem that the operator may recognize that it is impossible to control the display on the display despite touching, and may consider it to be a malfunction.

Further, the conventional display device with a touch panel has a drawback that the operator needs to approach the device to operate the switch in order to switch the touch detection mode, and this operation is troublesome.

In a display device with a touch panel, a touch is generally set to be recognized as a click operation. Therefore, in the conventional display device with a touch panel, when focusing the icon on the display, an operation of switching the touch detection mode is required, and this operation may hinder the flow of the presentation.

Further, there is a possibility that the display device with a touch panel may be operated by a person other than a legitimate operator when it is used only for the purpose of display or at a break during a presentation. In such a case, when a person other than an authorized operator operates the display device with a touch panel, the contents of the display may be changed, or the file stored in the device body may be deleted.

The present invention has been made in order to solve the above-mentioned problems, and has a mode in which tailing is eliminated and a mode in which a touch is detected by a signal of a dedicated pen and a mode in which a coordinate detection device detects a touch. It is a first object of the present invention to provide a display device with a touch panel that can automatically switch and prevent a currently set touch detection mode from being erroneously recognized.

A second object of the present invention is to provide a display device with a touch panel, in which switching between a mode for detecting a touch by a signal of a dedicated pen and a mode for detecting a touch by a coordinate detecting device is simple.

A third object of the present invention is to provide a display device with a touch panel that can perform an operation of focusing an icon by touch without interrupting the flow of presentation.

A fourth object of the present invention is to provide a display device with a touch panel that can prevent a person other than an authorized operator from operating the display device with a touch panel.

[0016]

[Means for Solving the Problems] In order to solve the above problems,
In order to achieve the object, a display device with a touch panel according to the invention according to claim 1 has a touch panel, and a touch panel having a touch surface and coordinate detection means for optically detecting coordinates of a point touched on the touch surface. A touch pen that is used for touching the touch surface and that has a signal output means that outputs a touch pen signal while the tip is in contact with the touch surface; and a signal receiving means that receives the signal output by the signal output means And display control means for controlling the content displayed on the display screen based on the touch pen signal received by the signal receiving means and the coordinates detected by the coordinate detecting means, and the display control means, While the signal receiving means validates the coordinates detected by the coordinate detecting means while receiving the touch pen signal, the signal receiving means Serial the coordinate detecting means while not receiving a touch pen signal and controls the display contents of the display screen with the touch pen control mode to invalidate the coordinates detected.

According to the first aspect of the invention, only the coordinates input while the tip of the touch pen is in contact with the touch surface are effective coordinates for control, and the tip of the touch pen contacts the touch surface. It is possible to control the contents displayed on the display screen by invalidating the coordinates input when not in use.

According to another aspect of the present invention, in the display device with a touch panel, the display control means receives the signal when the touch pen signal is not received by the signal receiving means within a pen out time which is a predetermined time. The non-touch pen control mode in which the coordinates detected by the coordinate detecting means are validated regardless of the reception of the touch pen signal by the means.

According to the second aspect of the present invention, when the tip of the touch pen does not come into contact with the touch surface within a predetermined time, the coordinate detected by the coordinate detecting means is valid regardless of the reception of the touch pen signal. can do.

The display device with a touch panel according to a third aspect of the present invention is characterized by further comprising a pen-out time adjusting means for adjusting the pen-out time.

According to the third aspect of the invention, the user can adjust the penout time according to his or her preference.

According to a fourth aspect of the present invention, in the display device with a touch panel, the touch pen has a switch, and the signal output means is provided when the tip of the touch pen comes into contact with the touch surface at the same time when the switch is operated. Output a signal different from the touch pen signal,
The display control means may determine that a focus operation has been performed at the coordinates detected by the coordinate detection means when a signal different from the touch pen signal is received by the signal reception means.

According to the fourth aspect of the present invention, the signal output when the tip of the touch pen comes into contact with the touch surface at the same time when the switch of the touch pen is operated is the focus operation at the coordinates detected by the coordinate detecting means. Can be assigned to.

A display device with a touch panel according to a fifth aspect of the present invention includes a plurality of the switches,
When at least two of the plurality of switches are simultaneously operated and the tip of the touch pen comes into contact with the touch surface, the display control unit sets the control mode of the display screen to the coordinates detected by the coordinate detection unit. It is characterized in that the touch panel invalid mode is set to invalidate all or the touch panel invalid mode is canceled.

According to the fifth aspect of the present invention, the coordinates detected by the coordinate detecting means by simultaneously operating at least two of the plurality of switches of the touch pen and bringing the tip of the touch pen into contact with the touch surface. It is possible to set a touch panel invalid mode in which all are disabled.

In the display device with a touch panel according to a sixth aspect of the present invention, when the display control means controls the display screen in the touch panel invalid mode, a message indicating the touch panel invalid mode is displayed. It is characterized by displaying on a display screen.

According to the invention of claim 6, when the touch panel invalid mode is set, a message indicating the touch panel invalid mode can be displayed on the display screen.

According to a seventh aspect of the present invention, a display device with a touch panel is characterized in that the signal output means outputs an infrared signal.

According to the seventh aspect of the invention, the infrared signal can be used as the control signal of the display device with a touch panel.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a display device with a touch panel according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a diagram for explaining the overall configuration of a display device with a touch panel according to an embodiment of the present invention. 2 is a diagram showing a touch panel of the display device with a touch panel shown in FIG. The display device with a touch panel according to this embodiment includes a display device 103 having a display screen 104. Also, a touch surface 102, optical coordinate detectors 203a and 203b that optically detect a point touched on the touch surface 102, and a touch panel 101 having a coordinate detection device 105 that detects the coordinates of the touched point. A touch pen described below, a touch detection device 205 that receives a signal output by the touch pen, a touch pen signal received by the touch detection device 205, and a coordinate detection device 105.
It has a personal computer (personal computer) 115 that controls the contents displayed on the display screen 104 based on the coordinates detected by the.

However, in the present embodiment, the touch surface 102 of the touch panel 101 is provided so as to overlap the front surface of the display screen 104, and the touch panel 101 is touched on the display screen 104 (touch point).
Is being detected. Further, the touch detection device 205 is arranged on the back surface of the display screen 104 and receives the touch pen signal transmitted through the display screen 104.

Among the above-mentioned constitutions, the personal computer 115 is
The coordinates detected by the coordinate detection device 105 are validated while the touch detection device 205 is receiving the touch pen signal, while the coordinates detected by the coordinate detection device 105 while the touch detection device 205 is not receiving the touch pen signal. The display content of the display screen 104 is controlled in the touch pen control mode in which is disabled.

In this specification, using the detected coordinates for controlling the display contents of the display screen 104 is referred to as "validating the detected coordinates". In addition, the fact that the detected coordinates are not considered in the control of the display content of the display screen 104 is referred to as "invalidating the detected coordinates".

The coordinate detecting device 105 is a left optical detector I / F which is an interface of an optical coordinate detector described later.
112a, right optical detector I / F 112b, infrared detector I / F 113 that is an interface of the touch detection device 205 described later, host I / F 114 that is an interface with the personal computer 115, and a program that controls the coordinate detection configuration of the touch panel 101. ROM1 where is stored
07, RAM 108 in which work data is temporarily stored,
A timer 109 that generates a time signal used for control, and a central processing unit (CPU) 1 that controls the above-mentioned configuration as a whole.
It is equipped with 06.

Also, the personal computer 115 is a Windows
(Registered trademark), MAC (registered trademark), Linux (registered trademark), or the like, which is a driver for inputting a coordinate signal output from the coordinate detecting device 105 via RS232C or USB under the control of an OS and converting the signal into mouse data. It is equipped with 110. The converted mouse data is output to a mouse I / F (not shown). Further, the personal computer 115 inputs mouse data from the mouse I / F, coordinates, and button ON.
An image RAM 116 in which an image displayed on the display screen 104 is expanded, and an APL 111 that executes a function preset in coordinates according to information, that is, a character drawing, a graphic drawing, and a ruled line drawing with a specific color and thickness.
Is equipped with. The display screen 104 of the present embodiment is a liquid crystal screen or a PDP screen, and is configured by disposing 1024 pixels in the X-axis direction and 768 pixels in the Y-axis direction, for example.

Next, the touch panel 101 will be described in more detail with reference to FIG. The touch panel 101 has a rectangular touch surface 102 with a horizontal length W and a vertical length H shown in the drawing. A side 204, which is one side of the touch surface 102 (overlapping the display screen 104) in the horizontal direction.
Optical coordinate detectors 203a and 203b are provided at both ends of the. Further, a retroreflective member 201 is provided along the three sides of the touch surface 102 where the optical coordinate detectors 203a and 203b are not provided.

Here, the detection of coordinates on the touch panel 101 will be briefly described. Optical coordinate detector 20
Reference numerals 3a and 203b each include a light source (not shown) and a light receiving section including, for example, a plurality of light receiving elements. The light emitted from the light source spreads in a fan shape that requires the light source over the entire touch surface 102. Then, the light is reflected by the retroreflective member 201 through the same optical axis as at the time of incidence, and is received by the light receiving section.

If there is nothing such as a finger to block light on the touch surface 102, the light emitted from the light source is received by all the light receiving portions. However, the touch point t on the touch surface 102
When (X, Y) is touched, only the light receiving element corresponding to the optical axis of the reflected light passing through the touch point t in the light receiving section does not receive light. Therefore, from the position of the light receiving element that does not receive light, the angle θL formed by the optical axis of the light emitted from the optical coordinate detector 203a and passing through the touch point t and the side 204.
I understand. Further, the angle θR formed by the optical axis of the light emitted from the optical coordinate detector 203b and passing through the touch point t and the side 204 can be known. Further, the coordinates (X, Y) of the touch point t can be found from the θL, θR, the length W, and the length H using the following formula. X = W × tan θR / (tan θL + tan θR) Y = H−W × tan θL × tan θR / (tan θL + ta
nθR)

The optical coordinate detector 203a and the optical coordinate detector 203b detect a light shield on the touch surface 102 every 20 ms or 10 ms, and the left optical detector I
A detection signal is input to the coordinate detection device 105 via the / F 112a and the right optical detector I / F 112b. The CPU 106 of the coordinate detecting device 105 calculates based on the detection signal to detect the coordinate. Further, the personal computer 115 converts the signal indicating the coordinates input from the coordinate detection device 105 into a mouse signal such as touch, stop, drag, detach, or double click. The image displayed on the display screen 104 is controlled according to the calculated coordinates and the mouse signal.

Further, the display device with a touch panel according to the present embodiment is provided with a touch pen which is used for touching the touch surface 102 and outputs a touch pen signal while the tip is pressed (contacted) with the touch surface 102. .
The touch panel 101 of this embodiment includes a touch detection device 205 that receives a touch pen signal output by the touch pen. The touch pen signal of the present embodiment is an infrared signal.

FIG. 3 is a diagram for explaining the touch pen 301. The touch pen 301 has three switches, a switch A, a switch B, and a switch C, a switch detection unit 302, and an infrared signal transmission unit 303. The switch detection unit 302 detects which one of the switch A, the switch B, and the switch C is pressed individually or simultaneously. Then, the infrared signal transmitting unit 303 is controlled according to the detected result, and the infrared signal is transmitted at 5 ms intervals while the switch is being pressed. The signal is received by the touch detection device 205, as shown in FIG. The touch detection device 205 converts the received touch pen signal (analog signal) into digital data, and inputs it to the coordinate detection device 105 via the infrared detector I / F 113.

Of the switches A, B, and C, the switch C is a switch for transmitting an infrared signal serving as a touch pen signal from the infrared signal transmitting section 303 while the tip of the touch pen 301 is pressed against the touch surface 102. is there. Functions such as right click and left click are assigned to the switches A and B.

The coordinate detecting device 105 detects the coordinates of the touch point based on the signals detected by the optical coordinate detectors 203a and 203b, and inputs them to the personal computer 115. The personal computer 115 validates the coordinates detected while the touch detection device 205 receives the touch pen signal transmitted by pressing the switch C, while the coordinates detected while the touch detection device 205 is not receiving the touch pen signal. Is disabled to control the contents displayed on the display screen. Hereinafter, the control mode of such display will be referred to as a touch pen control mode. In addition, in the touch pen control mode, the optical coordinate detectors 203a, 20a, 20
The control mode of the display that validates the coordinates detected by 3b is
In the present embodiment, it will be referred to as a non-touch pen control mode.

By the touch pen control mode described above, the display device with a touch panel according to the present embodiment can validate only the coordinates detected when the tip of the touch pen 301 is pressed against the display screen 104. Therefore, when the touch pen 301 shields light but does not touch the display screen 104, the touch is not detected, and tailing can be prevented.

Further, when the touch pen signal is not input, the coordinate detecting device 105 measures the time when the touch pen signal is not input based on the time signal generated by the timer 109. When the touch pen signal is not received by the touch detection device 205 within a predetermined time, the personal computer 115 is notified that the touch pen signal has not been received for the predetermined time. At this time, the personal computer 115
The mode shifts to the non-touch pen control mode in which the detected coordinates are valid regardless of the touch pen signal. In this embodiment, the time during which the touch pen signal, which is a condition for shifting to the non-touch pen control mode, is not input is referred to as pen out time.

With the configuration described above, the display device with a touch panel according to the present embodiment has the touch panel 10
The control of No. 1 can be automatically switched from the mode using the touch pen 301 to the mode using only the optical coordinate detector. Therefore, the operator can shift to a mode in which touch input is possible without using the touch pen 301 without operating the display device with a touch panel. Therefore, since the operator is set to the mode in which the touch pen is used, touch input with a finger or the like cannot be performed, and it is possible to prevent erroneous recognition as a device failure.

In the display device with a touch panel according to the present embodiment, the touch pen 301 has the switch A,
A switch B is provided, and at the same time when the switches A and B are operated, the tip of the touch pen 301 is displayed on the display screen 104.
When the switch C is pressed by contacting with, the infrared signal transmitter 303 outputs a signal different from the touch pen signal.
Hereinafter, the relationship between the operation of the switches A and B and the output infrared signal will be described.

5A to 5G show switches A, B, and C pressed by the touch pen 301.
It is a figure which shows the relationship between the transmitted touch pen signal. In the diagrams (a) to (g), the vertical axis represents the intensity of infrared rays and the horizontal axis represents time. Each signal shown in (a) to (g) is
A set of a start pulse Ps having a pulse width of 1500 μs and a pulse P0 output thereafter having a pulse width of 500 μs (U in the figure)
, And a set of pulses is output every 6 ms. The respective signals are different from each other in the time interval between the start pulse Ps and the pulse P0 output after the start pulse Ps or the time interval between the pulses P0. The personal computer 115 uses the time interval between the start pulse Ps and the pulse P0 or the pulse P
Each signal is identified by a time interval of 0.

In FIG. 5, (a) shows a signal output when only the switch A is pressed. Also,
(b) is a signal output when only the switch B is pressed, and (c) is a touch pen signal output when only the switch C is pressed. Further, (d) shows a signal output when the switch A and the switch B are pressed at the same time. (e) shows a signal output when the switches A and C are simultaneously pressed, and (f) shows a signal output when the switches B and C are simultaneously pressed. There is. Switch A,
When all of B and C are pressed at the same time, the signal shown in (g) is output. The above signals are assigned to any of the mouse operations.

The coordinate detection device 105 inputs the signals shown in FIGS. 5A to 5G through the infrared detector I / F 113 and notifies the personal computer 115 of the type of the input signal. The personal computer 115 has a touch panel 1 according to the type of signal.
When it is determined that 01 is touched, the coordinates calculated by the coordinate detection device 105 are determined to be valid coordinates.

Then, the personal computer 115 converts the signal indicating the coordinates into a mouse signal such as right-click or double-click with the driver 110, and assumes that the mouse operation assigned to each signal at the calculated coordinates has been performed. Controls the screen displayed at 104.

Further, in the display device with a touch panel according to the present embodiment, the user can operate the switch A and the switch B.
It has a screen on which correspondence between the operation of and the operation of the mouse can be arbitrarily set. FIGS. 6A and 6B show screens (switch setting screens) in which the operations of the switches A and B are assigned to the mouse operations and set. In the touch panel display device of the present embodiment, the user can also adjust the pen-out time on the switch setting screen.

The switch setting screen shown in FIG. 6 has a pen-out time setting section 601 and a pen switch function setting section 60.
Have two. In the pen-out time setting unit 601,
By moving the button 601a to the left or right in the drawing, it is possible to adjust the time required to shift from the touch pen control mode to the non-touch pen control mode. The default value is determined such that the average speed when drawing a character on the display screen 104 is 2 m / sec and the time required to move between characters is less than 1 second.

In the pen switch function setting section 602, the mouse button operation is assigned to the switch A, the switch B, and the two switches for simultaneously operating the switch A and the switch B. The mouse operation assigned to the switch A and the switch B is performed by, for example, the right button, the middle button,
There are double click, click OFF, touch OFF, and invalid. The operation of the switch A and the operation of the switch B in FIG. 6 may be performed while pressing the switch C. The contents of each operation are as follows. Right button Mouse right button Emulates ON middle button Mouse middle button ON emulates double click Emulates double click with one touch Click OFF Moves only pointer by touch operation Touch OFF Made for touch panel Disable touch disable Disable switch

By the way, the touch with the touch pen 301 on the touch panel is generally assigned to a left-click operation of a mouse in many cases. Also, Windo
ws (registered trademark), MAC (registered trademark), Linux
In a general-purpose OS such as (registered trademark), APL is generally executed by a click operation. In such a setting, for example, as shown in FIG. 7A, when the "insert" column is touched with a pen, pull-down menus such as page numbers, text boxes, and objects are displayed.

If it is not desired to click the touch with the touch pen 301, in the present embodiment, for example, the B switch is assigned to the click OFF shown in FIG. 6A on the switch setting screen. The click-off is an operation for executing a so-called focus operation in which the cursor is simply moved to the icon without recognizing the touch as the click. By assigning the click OFF to the B switch, if the "insert" is touched while pressing the switch B of the touch pen 301, the "insert" can be selected and the pop menu can be displayed (FIG. 7B).

Further, in the display device with a touch panel according to the present embodiment, as shown in FIG. 6B, touch OFF can be assigned to, for example, 2 switches.
The touch OFF is an operation of shifting the control mode of the display device 103 to a touch panel invalid mode which is a control mode that invalidates all the coordinates detected by the optical coordinate detectors 203a and 203b.

That is, when the touch OFF is assigned to the two switches, the display device with a touch panel according to the present embodiment pushes the switch A and the switch B at the same time and displays the display screen 10 with the touch pen 301.
Touching 4 enters a touch panel invalid mode in which input is not possible using the touch panel 101. When the display screen 104 is touched by the touch pen 301 while simultaneously pressing the switch A and the switch B when the touch panel invalid mode is set, the personal computer 11
Reference numeral 5 cancels the touch panel invalid mode and switches the control mode of the display screen 104 to a mode for receiving the input of coordinates from the touch panel 101.

In the touch panel invalid mode, the touch pen 3 is used.
This is a mode for preventing the contents displayed on the display screen from being changed by mischief or the like by storing 01 in a place where it should not be touched by a person who should not operate the display device with a touch panel. Such a function prevents the display contents of the display screen from being tampered with when the display screen 104 of the display device with a touch panel is used as a signboard or a bulletin board, or at a school or a presentation venue during a break, for example. It is effective for

Further, in the touch panel invalid mode, in the display device with a touch panel according to the present embodiment, as shown in FIG.
As shown in, a message 801 indicating the touch panel invalid mode is displayed on the display screen 104. By displaying the message, the display device with a touch panel according to the present embodiment can prevent the device from being erroneously determined to be defective when the touch panel invalid mode is executed.

Next, the processing performed by the display device with a touch panel according to the present embodiment described above will be described with reference to a flowchart. FIG. 9 is a flowchart for explaining coordinate detection performed by the touch panel display device of the present embodiment. First, the coordinate detection device 105 of the touch panel display device first detects the touch panel 10.
It is determined whether or not 1 has detected a coordinate indicator pointing the coordinates on the display screen 104 (step S901).
As a result of this judgment, when the coordinate pointing object is not detected (step S901: No), it waits until it is detected.

If it is determined in step S901 that the coordinate pointing object is detected (step S901: Ye
s), the coordinates of the point designated by the coordinate pointing object, that is, the touch point is calculated (step S902). Then, the touch detection device 205 detects the infrared signal transmitted from the touch pen 301 (step S903). As a result of the detection, if an infrared signal is detected and it is determined that a touch is made (step S904: Yes), the coordinates calculated in step S902 as touch coordinates are sent to the personal computer 115 (step S905).

If it is determined in step S904 that no touch has been made (step S904:
No), the coordinate detection device 105 determines whether or not a detach has been made (step S906). When it is determined that the detachment has not been made (step S906: No),
The coordinates calculated in step S902 are used as the moving / stopping coordinates when the coordinate pointing object has moved or stopped, and the personal computer 11
5 (step S907).

If it is determined in step S906 that the detach has been made (step S906: Ye
s), the coordinates calculated in step S902 are sent to the personal computer 115 as the detached coordinates (step S908).

FIGS. 10A and 10B are diagrams showing the data structure of information sent to the personal computer 115 as a result of the processing shown in the above-mentioned flowchart. Information is (a)
As shown in, the coordinate data includes coordinate status, X coordinate, and Y coordinate. (B) is a figure which shows the data structure of a coordinate status concretely.

11 and 12 are flowcharts for explaining the coordinate control process of the personal computer 115 which is the host device. The personal computer 115 is the touch panel 101.
Receives the coordinate data output from and converts it to mouse data. Mouse data is not shown Mouse I /
It is passed to F and the program of APL111 is mouse I / F.
Receives mouse data via and executes the function set in the coordinates.

At startup, the display device with a touch panel according to this embodiment is set to the touch pen control mode. The personal computer 115 first determines whether or not the pen-out time, which is a condition for shifting to the non-touch pen control mode, has elapsed (step S1101). As a result, when it is determined that the pen-out time has elapsed (step S
1101: Yes), the display screen 104 is set to the non-touch pen control mode (step S1102), and the timer for measuring the pen-out time is stopped (step S1103).

Next, the personal computer 115 has the touch panel 1
It is determined whether 01 has input coordinate data (step S1104). As a result, when it is determined that the coordinate data is not input (step S1104: No), it is determined again whether the penout time has elapsed (step S).
1101).

If it is determined in step S1104 that the coordinate data has been input (step S110).
4: Yes), and determines whether the input coordinate data is touch coordinates indicating a touch (step S110).
5). As a result, when it is determined that the coordinates are touch coordinates (step S1105: Yes), the data based on the functions and coordinates set for each switch of the touch pen 301 and the information based on the ON / OFF information of the switches of the touch pen 301 are processed. A certain pen switch control is executed (step S1106).

If it is determined in step S1101 that the pen-out time has not elapsed (step S1).
101: No), and it is determined whether the touch panel 101 has input coordinate data (step S1104).

In step S1105, if the input coordinate data does not indicate a touch (step S1105).
1105: No), and it is determined whether the touch panel 101 is set to the touch panel invalid mode (step S1107). If the result of determination is that the touch panel invalid mode has been set (step S1107: Yes
s), invalidating all the input coordinates, and step S1
Return to 101.

If the touch panel invalid mode is not set in step S1107 (step S1107: No), it is determined whether the coordinate data input in step S1104 is the moving / stopping coordinate (step S1108). Then, if the coordinates are the movement / stop coordinates (step S1108: Yes), it is determined whether or not the input coordinates are set to be invalid (step S11).
09). As a result of the determination, when the input coordinates are invalid (step S1109: Yes), step S1101
Return to. On the other hand, when the coordinates are not set to be invalid (step S1109: No), it is determined whether the display screen 104 is set to the touch pen control mode (step S1110).

When it is determined in step S1110 that the touch pen control mode is set (step S1110: Yes), the switch C of the touch pen 301 is selected.
It is determined whether or not is pressed (ON) (step S11).
11). As a result of this determination, when it is determined that the C switch is turned on (step S1111: Yes), the touch pen control mode is set (step S1112). Then, the counting of the pen-out time is stopped (pen-out timer is stopped) (step S1113), and the mouse I / F is notified that the left mouse button is turned on at the coordinates calculated based on the coordinate data as in the click operation. (Step S1114). By the process of step S114, the status of the left button ON is set (step S1115).

In step S1111, the switch C
When it is determined that is not turned on (step S111
1: No), and it is determined whether or not the status is set to the left button ON (step S1116). If the result of determination is that the left button is not set to ON (step S
1116: No), and returns to step S1101. Also,
If the left button is set to ON (step S1
116: Yes), the mouse I / F indicates that the left button has been turned off at the coordinates calculated by the coordinate detection device 105.
(Step S1117). Then, the status is set to invalidate the input of coordinates (step S11).
18).

When it is determined in step S1110 that the touch on the display screen 104 is not detected (step S1110: No), it is determined whether the status is set to double click (step S1119). As a result of the determination, when the double-click is set (step S1119: Yes),
At the coordinates calculated based on the input coordinate data, the mouse I / F is notified that the left mouse button is turned on (step S1120).

If it is determined in step S1119 that the status is not set to double click (step S1119: No), the status is clicked OF.
It is determined whether or not it is set to F (step S112).
1). If the result of this determination is that click-off is set (step S1121: Yes), mouse I
/ F is notified of the calculated coordinates (step S112).
2). As a result, the click operation is not executed, and a pop menu or the like explaining the function selected by the touch is displayed.

If the click-off is not set (step S1121: No), it is determined based on the status that any button of the mouse is turned on at the calculated coordinates, and the mouse I / F is notified. (Step S1123).

Further, the personal computer 115 operates in step S1.
In 108, when it is determined that the coordinate calculated based on the coordinate data is not the moving / stopping coordinate (step S1
108: No), and it is determined whether or not a detach is made at this coordinate (step S1124). When it is determined that the detach has not been made (step S1124:
No), and returns to step S1101. In addition, when it is determined that the detachment has been made (step S1124: Yes),
It is determined whether the status is set to the touch pen control mode (step S1125). When the touch pen control mode is set (step S1125: Y
es), and starts measuring the pen-out time (step S
1126), and it is determined whether the status is set to the touch panel invalid mode (step S1127).

If it is determined in step S1125 that the touch pen control mode is not set (step S1125: NO), it is determined whether the status is set to the touch panel invalid mode without starting to measure the pen-out time. It is determined (step S1
127). When the touch panel invalid mode is set (step S1127: Yes), the process returns to step S1101.

When it is determined in step S1127 that the status is not set to the touch panel invalid mode (step S1127: No), it is determined whether the status is set to the mode that invalidates the coordinate input (step S1128). ). As a result of the determination, if the mode is set to invalidate the coordinates (step S1
128: Yes), and sets the status to idle (step S1129). If it is determined in step S1128 that the mode for invalidating the coordinates is not set (step S1128: No), it is determined whether the status is set to click OFF (step S1130). When the click is set to OFF (step S1130: Yes), the status is set to idle (step S113).
1).

In step S1130, click O
If not set to FF (step S1130: N
o), the personal computer 115 determines whether or not the status is set to double-click (step S113).
2). If the double-click is set (step S1132: Yes), one touch is converted into a double-click signal. Therefore, when the detach is performed, the left button is turned OFF at the detached coordinates. (Step S1133), and then
When the left button is turned on, the mouse I / F is notified (step S1134). In addition, turn off the left button with mouse I
/ F is notified (step S1135), and the status is set to idle (step S1136).

When it is determined in step S1132 that the status is not set to double-click (step S1132: No), the personal computer 115 causes one of the mouse buttons to be OF in the calculated coordinates.
The mouse I / F is notified that F has been performed (step S113).
7). Then, the status is set to idle (step S1138), and the process returns to step S1101.

FIG. 13 is a diagram showing a data structure of information notified to the mouse I / F as a result of the processing according to the flowcharts shown in FIGS. The information includes coordinate data of mouse status, X coordinate, and Y coordinate, as shown in (a). (B) is a figure which shows the data structure of mouse status concretely.

14 and 15 are flowcharts for explaining the switch control subroutine of step S1106. In the switch control subroutine, first, the personal computer 115 determines whether or not the touch pen 301 is in the two-switch ON state in which the switch A and the switch B are simultaneously operated (step S1401). As a result of the judgment,
When 2 switches are ON (step S1401: Y
es) It is determined whether the input of 2 switches ON is invalid (step S1402). When the switch is invalid (step S1402: Yes), step S142
At 3, the ON state of the switch C is detected.

If it is determined in step S1402 that the switch is not invalid (step S1)
402: No), and determines whether the status is set to disable touch panel (step S1403). Then, when the status is not the touch panel invalid mode (step S1403: No), a touch panel invalid message indicating that input by the touch panel is invalid is displayed (step S1404), and the status is set to the touch panel invalid (step S1405).

When it is determined in step S1403 that the status is set to the touch panel invalid mode (step S1403: Yes), the touch panel invalid message is deleted (step S1406). In addition, the status is set to invalid coordinates (step S14).
07).

If it is determined in step S1401 that the two switches are not ON (step S1401)
1401: No), it is determined whether or not the switch A is turned on (step S1408). When the switch A is turned on (step S1408: Yes), it is determined whether or not this switch is invalid (step S1).
410). If the switch A is not turned on (step S1408: No), it is determined whether the switch B is turned on (step S1409). When the switch B is not turned on (step S1409: N
o), the ON of the switch C is detected in step S1423.

At step S1409, switch B is determined.
Is turned on (step S1409: Ye
s), it is determined whether or not this switch is invalid (step S1410). When the switch is invalid (step S1410: Yes), step S1423
At, the ON state of the switch C is detected. If it is determined in step S1410 that the switch is not invalid (step S1410: No), it is determined whether the right mouse button is turned on or in light of the switch setting (step S1411), and the right button is pressed. When it is turned on (step S1411: Yes), the mouse I / F is notified that the right button is turned on at the input coordinates (step S1412). In addition, the status is set to the right button ON (step S1413).

If it is determined in step S1411 that the switch has not been set to the right button ON (step S1411: No), the middle mouse button is set to O.
It is determined whether or not it has been N or not by checking the setting of the switch (step S1414). As a result of this determination, when the switch is set to the middle button ON (step S1414: Yes), the mouse I / F is notified that the middle button has been turned on at the input coordinates (step S1415). Further, the status is set to the middle button ON (step S1416).

When it is determined in step S1414 that the switch is not set to the middle button ON (step S1414: No), it is determined that the switch is double-clicked or the switch setting is checked (step S1417). . If the result of this determination is that the switch is set to double-click (step S14)
17: Yes), the left button is O at the input coordinates
The mouse I / F is notified that the operation has been performed (step S141).
8). Also, the status is set to double-click (step S1419).

If it is determined in step S1417 that the switch is not set to double-click (step S1417: No), it is determined whether the switch has been clicked off or not according to the switch setting (step S1420). If the result of this determination is that the switch is set to click OFF (step S
1420: Yes), and notifies the mouse I / F of the input coordinates (step S1421). Also, the status is set to click-off (step S1422).

Further, in the display device with a touch panel according to the present embodiment, if it is determined in step S1402 that the switch is invalid, or if it is determined that neither switch A nor switch B is turned on, switch C It is determined whether or not is turned on (step S1423). If the switch C is in the ON state (step S1423: YES), the display screen 1
Control 04 is set to a touch pen control mode for detecting a touch on the display screen 104 (step S
1424).

After setting the touch pen control mode, the personal computer 115 stops measuring the pen out time (step S1425). The mouse I / F is notified that the left button has been turned on at the coordinates calculated by the coordinate detection device 105 (step S1426). Then, the status is set to the left button ON (step S1427) and the process returns to step S1401.

The display device with a touch panel according to the present embodiment described above prevents the trailing that occurs in the optical coordinate detector, and by a signal output from the touch pen by not touching during the pen out time. It is possible to automatically switch between the touch pen control mode for detecting a touch and the mode for detecting a touch by the seat surface detection device. Therefore, the operator does not need to perform a mode switching operation, and the presentation can proceed smoothly. Further, it is possible to prevent the control mode currently set in the display device with a touch panel from being erroneously determined that the device does not operate.

Further, in the display device with a touch panel according to the present embodiment, the focus operation can be executed by the touch operation. Further, it is possible to set the touch panel invalid mode and prevent the display device with the touch panel from being operated by anyone other than an authorized operator. Furthermore, it is possible to show to the outside that the display device with a touch panel is operating normally even while the touch panel invalid mode is being set.

[0097]

As described above, according to the first aspect of the invention, only the coordinates input while the tip of the touch pen is in contact with the touch surface are effective coordinates for control, and the tip of the touch pen is A display with a touch panel capable of eliminating the trailing in the optical coordinate detection by controlling the display content of the display screen in a touch pen control mode that invalidates the coordinates input when not touching the touch surface. It is possible to provide the device.

According to a second aspect of the present invention, when the tip of the touch pen does not contact the touch surface within a predetermined time,
In order to validate the coordinates detected by the coordinate detecting means irrespective of the reception of the touch pen signal, the mode in which the touch is detected by the signal of the dedicated pen and the mode in which the coordinate detecting device is detected are automatically switched, and the currently set touch is set. It can prevent the detection mode from being erroneously recognized.
It is possible to provide a display device with a touch panel in which a mode switching operation is easy.

The invention according to claim 3 has an effect that a display device with a touch panel can be provided which can provide a display device with a touch panel which is more operable for the user.

The invention according to claim 4 has an effect that it is possible to provide a display device with a touch panel capable of executing an operation of focusing an icon by touch without interrupting the flow of the presentation.

The invention according to claim 5 provides a display device with a touch panel that can set a touch panel invalid mode by a simple operation and can easily prevent a non-authorized operator from operating the display device with a touch panel. There is an effect that can be.

The invention described in claim 6 has an effect that it is possible to provide a display device with a touch panel capable of externally indicating that the touch panel is normally operating during the setting of the touch panel invalid mode.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an overall configuration of a display device with a touch panel according to an embodiment of the present invention.

2 is a diagram showing a touch panel of the display device with a touch panel shown in FIG.

FIG. 3 is a diagram illustrating a touch pen according to an embodiment of the present invention.

FIG. 4 is a diagram for explaining that the touch detection device receives a touch signal.

FIG. 5 is a diagram showing a relationship between a touch pen switch A, a switch B, a switch C, and a transmitted touch pen signal.

FIG. 6 is a diagram for explaining a screen for assigning a touch pen switch operation to a mouse operation for setting.

FIG. 7A is a diagram for explaining a click operation of the touch pen, and FIG. 7B is a diagram for explaining a focus operation of the touch pen.

FIG. 8 is a diagram for explaining a message indicating that the touch panel invalid mode is set.

FIG. 9 is a flowchart for explaining coordinate detection performed by the touch panel display device according to the embodiment of the present invention.

10 is a diagram showing a data structure of information transmitted as a result of the processing shown in the flowchart shown in FIG.

FIG. 11 is another flowchart for explaining coordinate detection performed by the touch panel display device according to the embodiment of the present invention.

FIG. 12 is another flowchart for explaining coordinate detection performed by the touch panel display device according to the embodiment of the present invention.

13 is a diagram showing a data structure of information transmitted as a result of the processing shown in the flowcharts of FIGS.

FIG. 14 is another flowchart for explaining coordinate detection performed by the touch panel display device according to the embodiment of the present invention.

FIG. 15 is another flowchart for explaining coordinate detection performed by the touch panel display device according to the embodiment of the present invention.

FIG. 16 is a diagram for explaining trailing that occurs in a conventional display device with a touch panel.

[Explanation of symbols]

101 touch panel 102 touch surface 103 display device 104 display screen 105 Coordinate detection device 106 CPU 109 timer 110 driver 112a Left optical detector I / F 112b Right optical detector I / F 115 PC 201 Retroreflective member 203a Optical coordinate detector 203b Optical coordinate detector 204 sides 205 touch detection device 301 touch pen 302 Switch detector 303 Infrared signal transmitter 601 Pen-out time setting section 801 message

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Claims (7)

[Claims] 1. A touch panel having a touch surface and coordinate detection means for optically detecting the coordinates of a point touched on the touch surface; a touch panel used for touching the touch surface, the tip of which is on the touch surface. A touch pen having signal output means for outputting a touch pen signal while in contact, a signal receiving means for receiving a signal output by the signal output means, a touch pen signal received by the signal receiving means, and the coordinate detecting means Display control means for controlling the content displayed on the display screen based on the coordinates detected by the display control means, wherein the display control means is the coordinate detection means while the signal receiving means is receiving the touch pen signal. While the coordinates detected by the above are valid, the coordinates detected by the coordinate detecting means while the signal receiving means is not receiving the touch pen signal. Touch panel display device and controls the display contents of the display screen with the touch pen control mode to invalid. 2. The display control means, if the touch pen signal is not received by the signal receiving means within a pen out time which is a predetermined time, the display control means detects the coordinate regardless of the reception of the touch pen signal by the signal receiving means. The display device with a touch panel according to claim 1, wherein a non-touch pen control mode for validating the coordinates detected by the means is entered. 3. The display device with a touch panel according to claim 1, further comprising a pen-out time adjusting means for adjusting the pen-out time. 4. The touch pen has a switch, and the signal output means outputs a signal different from the touch pen signal when the tip of the touch pen comes into contact with the touch surface at the same time when the switch is operated, and the display control is performed. The means determines that a focus operation has been executed at the coordinates detected by the coordinate detecting means when a signal different from the touch pen signal is received by the signal receiving means. A display device with a touch panel according to any one of the above. 5. A plurality of the switches are provided, and when at least two of the plurality of switches are simultaneously operated and the tip of the touch pen comes into contact with the touch surface, the display control means sets the control mode of the display screen. ,
The display device with a touch panel according to claim 2, wherein the touch panel invalid mode is set to invalidate all the coordinates detected by the coordinate detecting unit, or the touch panel invalid mode is released. 6. The display control means displays a message indicating the touch panel invalid mode on the display screen when controlling the display screen in the touch panel invalid mode. 5. A display device with a touch panel according to any one of items 5 to 5. 7. The display device with a touch panel according to claim 1, wherein the signal output unit outputs an infrared signal.