JPS63279316A - See-through type touch system input detector - Google Patents

Abstract

PURPOSE:To obtain the position information having the resolution higher than a prescribed level that is decided by the number of sense lines and driving lines, by calculating the shift values of plural detected touch positions and controlling and outputting the position information obtained from said shift values as the actually supplied input information. CONSTITUTION:A multi-touch position detecting means M1 detects plural touch positions supplied simultaneously owing to a fact that the sense and driving lines are abutted on each other at plural areas. A shift value arithmetic means M2 calculates the shift value of at least one of those detected touch positions. A position information control means M3 controls and outputs the position information obtained from said calculated shift value as the actually supplied input information. Thus it is possible to obtain the position information having the resolution different from a prescribed level detected by the number of sense lines and driving lines. Then it is not required to reduce the width of each sense line and driving line so that a finger touch is impossible with these lines since the resolution is so high.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transparent touch input detection device that detects a pressed touch position on a transparent touch input section.

[Prior Art] A transparent touch input detection device has conventionally used a transparent touch key (a transparent touch input section) with a predetermined resolution in which a plurality of sense lines and drive lines made of transparent electrodes are arranged in a matrix. There is a known device that detects a pressed touch position by scanning. This see-through type touch input detection device covers the screen of a display device such as a CR7 display device with a see-through touch type input device, and is capable of making correspondence between displayed data and a touch position pressed by a fingertip or the like. It has extremely excellent effects such as.

[Problems to be Solved by the Invention] However, the resolution of the conventional see-through type touch input detection device is determined by the number of strip-shaped sense lines and the number of drive lines arranged in a matrix. , there was a problem that it was not possible to provide position information with a resolution higher than a predetermined resolution. In order to solve this problem, it is conceivable to reduce the width of the strip-shaped sense lines and drive lines and increase the number of sense lines and/or drive lines, but for the following reasons. It was hard to say that it was a preferable solution.

That is, in order to perform input using a transparent touch input device with a fingertip, the width of the sense line and the drive line must be 10 m or more than 158 mm in order to identify the touch position, and cannot be made too small. . Furthermore, even if a configuration is configured to allow input using a thin pen tip, etc., it is not only inconvenient, but also requires a configuration in which the number of sense lines and/or drive lines is increased in order to increase the resolution. Problems were thought to be that it would become more complex and the number of elements would increase.

On the other hand, as shown in ``Position Input Device'' of Japanese Patent Publication No. 61-34163, inventions have also been made in which function processing is performed by simultaneously inputting two or more points. However, these inventions and proposals attempt to provide signals other than position designation input by simultaneously indicating two or more points, and the resolution is higher than a predetermined resolution determined by the number of sense lines and drive lines. It is not intended to provide location information.

The see-through type touch input detection device of the present invention has been made for the purpose of solving the above problem, and is configured as follows.

Structure of the Invention F Means for Solving Problem] The see-through touch type input detection device of the present invention, as shown in the basic structure in FIG. In a see-through type touch input detection device in which touch lines are spaced apart from each other and arranged in a matrix, the sense lines and drive lines are brought into contact with each other at a plurality of locations, thereby detecting multiple touch positions input at the same time. a plurality of touch position detection means (Ml); a movement amount calculation means (M2) for calculating the amount of movement when at least one touch position among the detected plurality of touch positions moves; The present invention is characterized by comprising a position information control means (M3) that controls and outputs position information based on the amount of movement as actually input information.

[Operation] The see-through type touch input detection device of the present invention operates as follows.

The see-through type touch input detection device of the present invention, when at least one touch position among the plurality of touch positions detected by the plurality of touch position detection means (Ml) moves, the amount of the movement is calculated by the movement amount calculation means (Ml). M2),
The position information control means (M3) controls and outputs position information based on the calculated movement amount as actually input information.

[Example] Next, a preferred example will be described with reference to the drawings in order to further clarify the configuration of the transparent touch type input detection device of the present invention.

FIG. 2 is a schematic configuration diagram showing the configuration of a transparent touch type input detection device according to an embodiment of the present invention.

The see-through type touch input detection device of this embodiment includes a see-through touch panel 3 placed on the front surface of the screen of a CRT display device (hereinafter referred to as CRT) 1, and sense lines χ1 to yn forming the see-through touch panel 3. A selection switching circuit 5a that selects any sense line among the sense lines, a selection switching circuit 5b that selects any one of the drive lines y1 to yn forming the touch panel 3, and selection switching circuits 5a and 5b. It is composed of an electronic control device 7 that performs scanning of the see-through touch panel 3, and the like.

Sense lines χ1 to y forming the transparent touch panel 3
n and drive lines y1 to yn are each formed by vapor-depositing indium oxide (so-called ITO) into a strip shape on a substrate such as a transparent polyester film.

The input side of the selection switching circuit 5a configured as a multiplexer is connected to a power source at a predetermined potential via a pull-up resistor R1, and its plurality of output sides are connected to one end of each of the sense lines χ1 to yn. It is connected. Similarly, the plurality of input sides of the selection switching circuit 5b configured as a multiplexer are each connected to one end of each of the drive lines y1 to yn, and the output side thereof is grounded.

The electronic control device 7 includes a CPU 7a, a ROM 7b, and an RA
It is configured as a logic operation circuit with M7c and the like as the center, and an external input circuit 7d and an external output circuit 7e connected to each other by a bus 7f. The external input circuit 7d of the electronic control device 7 is connected to the input side, that is, the power supply side, of the selection switching circuit 5a via the signal line 10, and the external output circuit 7e is connected to the selection switching circuit 5a and the selection switching circuit 5b. They are connected to selection switching circuits 5a and 5b via signal lines 11 and 12, respectively, in order to perform this.

Further, the CRTI is connected to this external output circuit via a signal line 13 and to an external input circuit via a signal line 14, respectively.

The operation of this embodiment having the above configuration will be explained together with the "Fine Mort Routine" shown in FIG.

This "fine motor routine" is one of the various processes performed by the electronic control device 7, and is performed on the sense lines χ1 to yn.
This is a processing routine showing a process of providing the CRTl with position information (in fine mode) that requires a resolution higher than the predetermined resolution of the touch panel 3 whose resolution is determined by the number of drive lines y1 to yn and the number of drive lines y1 to yn. .

This process is executed when the CRT1 requests fine mode (step 3100). In other words, as shown in the CRTI screen data in FIGS. 4 and 5, when there is a lot of data for selection items on one screen, the position information detected when each selection item is touched (pressed) on the touch panel 3. It is not possible to have a one-to-one correspondence.

In such cases, fine mode is required. At this time, as shown in FIG. 4, the CRTl displays each selection item, and also displays in color the positions of the sense lines χ1 to yn and the drive lines y1 to yn of the touch panel 3 placed on the front surface of the CRTl screen. do.

When fine mode is requested (step 5100),
The CPLI 7a of the electronic control unit 7 executes a well-known scanning process (step 5110), that is, the CPU 7a
The selection switching circuit 5a is switched via the external output circuit 7e and the signal line 11 to select an arbitrary sense line, and the selection switching circuit 5b is similarly switched to sequentially select each of the drive lines y1 to yn, and the signal line The process of comparing the voltage (2) inputted via 1of3 and the external input circuit 7d with a predetermined level is executed for all sense lines. As a result, positional information of a pressed button on the touch panel 3 with a predetermined resolution is detected.

The position information detected by the scanning process is stored in RAM7.
c (step 3120 > In the following step 3130, each selected item is input (ENTER)
It is determined whether or not.

This means that the detected position information, as shown in Figure 4,
This is done by determining whether or not the point P1 is predetermined as the ENTER key. Immediately after the fine mode is requested, as shown in FIG. 4, the cursor flashes under the number of selection item 1 and selection item 1 is activated.

is displayed, and selection item 1 is ready for input.

If an affirmative judgment is made in step 5130 that no input has been made, it is judged whether or not the detected position information corresponds to two points of simultaneous touch (step S140). It is determined whether the points are separated by more than one drive line row and/or one sense line column (step 5150).

If the desired item is not the selection item 1 on which the cursor is blinking, the operator of the touch panel 3 first touches any two points on the touch panel 3. In this embodiment, as shown in FIG. 6, point P2 is touched with the thumb and point P3 is touched with the index finger. here,
A state in which two points are simultaneously touched with one finger, in other words, a state in which adjacent sense lines and/or drive lines are simultaneously touched with one finger, is a state in which the above two points are simultaneously touched. The process of step 5150 is performed for determination. Thereafter, the operator moves the thumb and/or index finger of the simultaneous touch on the touch panel 3 according to the number of selected items whose cursor is blinking, and then releases the touch panel. In other words, if the selection item you want to input is selection item 3, then selection item 1 and selection item 3
The thumb and/or index finger is moved while touching the touch panel 3 by the number of sense lines and/or drive lines corresponding to the difference between the numbers. In this embodiment, as shown as points P4 and P5 in FIG. 6, both the thumb and index finger move by a distance corresponding to two drive lines. This operation is
This can be easily done because the positions of the sense lines χ1 to yn and the drive lines y1 to yn are displayed on the screen of the RTl.

Detection of the above operation is performed by steps 3140 to 5160. That is, as mentioned above, step 31
40 and Sl 50 to detect that two points have been touched simultaneously, and then, in step 5160, it is detected that the positions of the simultaneous touches have moved. In addition, for the two points of simultaneous touch before movement, the rise of the signal, that is, the position information detected for the first time, is considered valid, and for the two points of simultaneous touch after movement,
Position information immediately before the signal falls, that is, position information is no longer detected, is considered valid.

Subsequently, in step 5170, the amount of movement of the simultaneous touches is calculated, and position information according to this amount of movement is calculated. That is, the amount of movement across two drive lines on the touch panel 3 is calculated as the amount of movement of two selection items whose positions are displayed differently from the predetermined resolution of the touch panel 3. Here, when the amount of movement between the thumb and index finger in simultaneous touching is different, calculation is performed according to the one with the larger amount of movement.

In step 3180, it is determined whether there is a selection item to be selected according to the calculated position information. This is done when the fine mode is requested (step 5100), based on the resolution of the selection items to be displayed and the number of selection items received in advance from the CRTl. Here, if an affirmative determination is made, the process proceeds to step 519.
0, and outputs the calculated position information to the CRTl via the external output circuit 7e and the signal line 13. As a result, as shown in FIG. 6, the CRT1 moves the selection item on which the cursor is flashing from selection item 1 to selection item 3, and makes input of selection item 3 possible.

Here, when point P1 as the ENTER key shown in FIG. 4 is touched, the input of the selection item is completed (
steps 3110-5130 and 8200). On the other hand, if a negative determination is made in step 8180, an error sound is output (step 3210>), or if a negative determination is made in any of steps S140 to S5160, the error sound is output directly in step 5110.
Return to subsequent processing. Furthermore, when it is desired to select a selection item other than selection item 3, the above-described simultaneous touch operation is similarly performed. If a negative determination is made in step 180, an error signal is output to the CRT1, and the flashing selection item is returned to selection item 1. It is also conceivable that the process of step 3180 be configured to be executed by the CRTl.

According to the transparent touch type input detection device of the present embodiment described in detail above, it is possible to provide position information with a predetermined resolution or higher determined by the number of sense lines and the number of drive lines forming the touch panel 3. Has excellent effects.

This allows a large amount of input data, such as selection items, to be displayed on one screen at once, and the operator has to view the screen multiple times to detect a large amount of input data, unlike in the past. It has an excellent effect of being able to solve the problem of having to switch. Also,
In this embodiment, the sense line χ1 is displayed on the screen of the CRTl.
to yn and the positions of drive lines y1 to yn are displayed. This also has the effect that the operator can easily know the amount of movement of the simultaneous touches that he or she wants to move.

The see-through type touch input detection device of the present invention is not limited to the above-mentioned embodiment in any way, and can be implemented in various forms without departing from the gist of the present invention. for example,
In this embodiment, the scanning process in step 110 is a hardware interrupt process at predetermined time intervals, and the position information detected at each hardware interrupt is sent to the CRTl, so that the movement status of simultaneous touches is displayed on the screen of the CRTl. You may let them. This has the effect that the operator can perform operations while checking position information with different resolutions.

According to the transparent touch type input detection device of the present invention, it has the excellent effect of being able to provide position information that differs from the predetermined resolution determined by the number of sense lines and the number of drive lines. There is. This eliminates the need to make the width of each sense line and drive line so small that it is impossible to touch them with a finger in order to increase the resolution. Problems such as having to do this can also be solved suitably. Furthermore, as a result, it is possible to reduce the number of circuit elements and the like, thereby reducing costs.

[Brief explanation of drawings]

FIG. 1 is a block diagram illustrating the basic configuration of a perspective type touch input detection device of the present invention, FIG. 2 is a schematic configuration diagram showing a perspective type touch input detection device according to an embodiment of the present invention, and FIG. A flowchart showing the processing of the "fine seventh routine"; FIGS. 4 and 5 are explanatory diagrams showing data displayed on the screen when the CRT 1 requests the fine mode, respectively;
FIG. 6 is a schematic diagram showing the operation of the operator's hands when performing simultaneous touches on the touch panel 3. 1... CRT display device 3... Transparent touch panel 7... Electronic control device χ1 to yn... Sense lines y1 to yn... Drive lines

Claims (1)

[Scope of Claims] A see-through touch type input detection device in which a plurality of sense lines and drive lines formed of transparent electrodes are spaced apart from each other and arranged in a matrix shape, wherein each of the sense lines and drive lines are arranged in a plurality. a plurality of touch position detection means for detecting a plurality of touch positions input at the same time by contacting the plurality of touch positions; and when at least one touch position among the detected plurality of touch positions moves, the amount of movement thereof; A perspective type touch characterized by comprising: a movement amount calculation means for calculating the movement amount; and a position information control means for controlling and outputting position information based on the calculated movement amount as actually input information. Expression input detection device.