JPH08185265A - Touch panel controller - Google Patents

Abstract

PURPOSE: To make possible accurate touch panel input within a narrow range with a finger. CONSTITUTION: The touch panel controller is equipped with a display part 1, a touch panel 2, a coordinate detection part 3 which detects indicated coordinates on a display screen on the basis of information from the touch panel 2, and an input processing part 4 which displays data at a display part 1 and inputs display data corresponding to detected coordinates or data corresponding to the display data; and the input processing part 4 enlarges and displays display data displayed within a specific range centering on the coordinates detected by the coordinate detection part 3 by touch panel depression, varies the coordinate range for specifying the display data according to the enlargement of the display data, and retrieves and inputs display data corresponding to next coordinates detected at the time of this enlargement display on the basis of the coordinate range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a touch panel control device. In recent years, mobile terminals have become widespread. While there is a demand for miniaturization of this mobile terminal device, there is a demand for maintaining or increasing the number of characters displayed on the screen.

Regarding the number of characters to be displayed, it is possible to display many characters by reducing the dot pitch on the screen, but by attaching a touch panel to this screen and touching it with a finger, the displayed characters or corresponding characters can be displayed. In the case of the touch panel input method for inputting data, the effective range for the character becomes narrow and it becomes impossible to press the correct place.

Therefore, in the touch panel, there is a demand for a touch panel control device capable of accurately performing touch panel input in a narrow range.

[0004]

2. Description of the Related Art FIG. 4 is an explanatory view of a conventional example. FIG. 4 shows an example of an input display of the mobile terminal 10 for inputting the number of stocks, for example, displaying a display screen of the product name to be handled on the display 11 with a touch panel,
By touching the product name on the display screen with a finger, the product name is input.

Subsequently, for example, a ten key is displayed, and the number of stocks is input by touching the displayed number with a finger. Since the mobile terminal 10 is required to be downsized, the display screen also has a small area, which limits the product name that can be accommodated in one screen.

In order to solve this, there are methods such as decreasing the dot pitch to reduce the size of the displayed character or increasing the number of display screens. In the former method, the effective area for one displayed character is narrow. If you touch the touch panel with your finger, the finger will touch the necessary part, and you will not be able to input accurately, so you have to touch with the pen to specify a narrower range. When using a resistive film as a touch panel, the pen touch method may be lost because the pen is not connected to the terminal 10 by a wire. It is requested to touch with. In the latter method of increasing the number of display screens, there is a problem that the page turning operation is troublesome and it takes time to find out which screen the target product name is on.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a touch panel control device capable of accurately inputting a narrow range of input items with a finger.

[0008]

In order to solve the above-mentioned problems, the touch panel control device of the present invention includes (1) a display unit, a touch panel, and a coordinate on a display screen designated based on information from the touch panel. A touch panel control device comprising: a coordinate detection unit for displaying data on a display unit; and an input processing unit 4 for inputting display data corresponding to the detected coordinates or data corresponding to the display data. The input processing unit enlarges and displays the display data displayed in a predetermined range centered on the coordinates detected by the coordinate detection unit by pressing the touch panel, and expands the coordinate range that specifies the display data. The display data corresponding to the next coordinate detected during the enlarged display is searched and input based on the coordinate range. To configure. (2) In the above (1), a shift key is provided, and the enlarged display data is shifted to the left, right, up, and down in response to the shift key being pressed, and the data excluded from the display screen by the enlarged display is displayed.

[0009]

[Action]

(1) The operation will be described below with reference to the specific explanatory view of the present invention in FIG. First, touch the data you want to input with your finger on the touch panel. When the touched coordinates are detected by the coordinate detection unit 3, the input processing unit 4 enlarges and displays the display data in the vicinity of the coordinates, and enlarges the effective surface of the touch panel 2 corresponding to the enlarged display data. .

Here, by touching the enlarged display data again with a finger on the screen, the display data can be specified accurately, and the input processing unit 4 changes the display data corresponding to the coordinates to the display data. Search from the specified coordinate range and enter.

As described above, by touching twice, desired data can be accurately input,
Even if the portable terminal is further downsized and the effective area of the touch panel 2 is reduced, it is possible to input accurately even by touching with a finger. (2) If the target data deviates from the target data by the first touch, the target data will be shifted and displayed by shifting with the shift key, and it is necessary to make the first touch location so strict. Is eliminated and operability is improved.

[0012]

FIG. 2 is a block diagram of an embodiment, and FIG. 3 is a process flow chart. FIG. 2 shows an example in which a resistance film is used as the touch panel. In addition, an example in which the enlarged characters can be shifted by the shift key is shown. In FIG. 2, a screen memory 22 stores a plurality of types of screen data. For example, screen data such as that shown in the display screen of FIG. As each of the data, the data of the entire screen is stored as shown in the left display screen of FIG. 1, and the ruled line frame, the character code, etc. are defined by the digit and line, and the display address is defined. In addition, for each character code, an instruction area (field) when the character is displayed is defined by XY coordinate values on the touch panel (or display screen). That is, the coordinate values indicating the ruled line frame, for example, the upper left and lower right coordinates of the ruled line frame are stored, and if the touched coordinates are within this frame, it is determined that the character code is designated.

An input processing unit 23 performs input processing by double touching, as described later. 24 is an enlarged screen memory,
The frame, character code, enlargement ratio, field information, etc. at the time of enlarged display are set and stored by the input processing unit 23.

Reference numeral 26 is a coordinate detection unit, which is composed of a touch panel 29, an analog-digital converter ADC 28, a control unit 27, etc., and detects the coordinates touched by a finger. Touch panel 29
Is composed of two transparent resistance films A and B, and is attached to the liquid crystal display section 33. As shown in the drawing, electrodes c and d and electrodes a and b are vapor-deposited on the resistance films A and B, respectively.
Each B has a certain interval and is arranged so that the electrodes intersect. If point P is pressed down and resistance films A and B contact at this point, first, resistance film B
A voltage is applied between electrodes a and b of
Read the value of DC28. As is well known, the x coordinate value of the point P can be obtained from this value. Next, when a voltage is applied between the electrodes cd by a switching means (not shown) and the output of the electrode b is read by the ADC 28, the y coordinate of the point P is obtained.
In this way, the xy coordinate values obtained with the predetermined resolution are read by the input processing unit 23.

A display control unit 31 develops each character code in the designated screen data into a character pattern while referring to the character generation ROM 30, and stores the character pattern in a predetermined address of the pattern memory 32. When enlarged display is designated, the enlargement processing unit 34 is requested to enlarge the pattern, and the obtained character pattern is stored in the pattern memory 32. Then, the contents of the pattern memory 32 are scanned and read out and displayed on the liquid crystal display 33.

A liquid crystal display 33 displays input data (menu), guidance texts, etc. as shown in FIG. Reference numeral 35 denotes a shift key, which may be a mechanical key or a touch key displayed on the display screen.

Reference numeral 21 denotes a central processing unit CPU, which runs the above-mentioned respective parts composed of programs and controls the terminal device. Each unit is connected by a bus 100 including an address bus, a data bus, and the like.

Here, the enlarged display is doubled vertically and horizontally, and the frame display is fixed as in the right side display screen of FIG. Then, the display data corresponding to the touch coordinates of the first time (here, the case where "dry" is touched for the first time is shown as an example) is enlarged and displayed in the central area M, and the upper and lower sides thereof are full display, left and right, upper and lower sides, The upper left and lower parts show a part of it. With this partial display,
Adjacent display characters can be guessed, and the shift direction can be easily determined.

Further, it is assumed that the shift is performed in units of frames. For example, when the upward shift key is pressed, "illumination" is displayed in the area M and "range" below it is displayed at "illumination" in FIG. The same applies to the left-right direction.

This control is achieved by the input processing unit 4 rewriting the contents of the enlarged screen memory 24. With the above configuration, the following operations and operations are performed. See FIG. 3 (1) For example, by designating the initial screen, the display control unit 31 reads the designated screen data in the screen memory 22, expands each character code into a character pattern, and stores it in the pattern memory 32. As a result, FIG.
Input data (menu) is displayed like the left screen of. (2) The operator presses the location of the data to be input on the display screen (touch panel). That is, the touch panel 29 is pressed. (3) By this pressing, one point of the resistance films A and B of the touch panel 29 comes into contact, and the coordinates thereof are detected. (4) The input processing unit 23 reads these coordinates and stores them in the screen memory.
The screen data in 22 is referred to, and the corresponding field is detected by comparing with the coordinates of the field described above.

By making this field correspond to the area M shown in FIG. 1, screen data for extended display is created and stored in the enlarged screen memory 24. When the frame display is fixed, preset frame pattern data may be stored. As the screen data, in addition to the display position, the character code, the magnification, and new field coordinates representing the display frame area are stored. (5) When this creation is completed, the display control unit 31 reads the contents of the enlarged screen memory 24 and updates the contents of the pattern memory 32. As a result, the liquid crystal display 33 enlarges and displays the input data in the vicinity of the coordinates touched the first time as shown in the right display screen of FIG. (6) Then, the operator presses the touch panel 29. (7) The pressed coordinates are detected. (8) The input processing unit 23 compares the detected new coordinate data with the screen data in the enlarged screen memory 24, identifies the character code corresponding to the coordinate, and determines the character code as the input data.

As described above, since the enlarged screen is created by assuming that the coordinates of the first time are incorrect and the input data is confirmed by the correct pressing of the second time, even if the display area is small, the second time Since the display area is large, it is possible to accurately touch and input, and at the same time, the operator can easily confirm the input.

When the image is enlarged, the shift key is displayed in a blank space, for example, the area N shown in FIG. When the target data is not enlarged and displayed by the first touch, the operator depresses this shift key to move the displayed item. For example, if you want to enter "word processor",
When the shift key "←" is pressed, "word processor" is shifted left and displayed, so touch the displayed one with a finger.
As described above, even if the first touch position is not greatly shifted and displayed, it can be shifted by the shift key 35 and the operation is not disabled.

Although the touch panel 29 using the resistance film is shown in the above description, it goes without saying that the touch panel has a plurality of types and is not limited to the resistance film.

Further, it goes without saying that the way of enlarged display is not limited to that shown in FIG.

[0026]

As described above, according to the present invention, by pressing the touch panel once, the display is enlarged and the touch area is enlarged correspondingly, so that the touch can be made accurately in the second time. , Even if the displayed characters are small, they can be input by touching them with a finger. In addition, even when not touching with a finger, when using a touch panel having a low resolution, the present method allows accurate touching, and an inexpensive input device with a touch panel can be provided.

[Brief description of drawings]

FIG. 1 is a specific explanatory view of the present invention.

FIG. 2 is a configuration diagram of an embodiment.

[Fig. 3] Process flow chart

FIG. 4 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 display unit 2 touch panel 3 coordinate detection unit 4 input processing unit 10 portable terminal 11 display unit with touch panel 21 central processing unit CPU 22 screen memory 23 input processing unit 24 enlarged screen memory 26 coordinate detection unit 27 control unit 28 analog-digital converter ADC 29 Touch panel 30 Character generation ROM 31 Display control unit 32 Pattern memory 33 Liquid crystal display 34 Enlargement processing unit 35 Shift key 100 Bus

Claims (2)

[Claims] 1. A display unit, a touch panel, a coordinate detection unit that detects coordinates on the display screen designated based on information from the touch panel, and data is displayed on the display unit.
A touch panel control device comprising: display data corresponding to the detected coordinates, or an input processing unit for inputting data corresponding to the display data, wherein the input processing unit is operated by the coordinate detection unit by pressing the touch panel. The display data displayed in a predetermined range centered on the detected coordinates is enlarged and displayed, and the coordinate range for designating the display data is changed according to the enlargement of the display data. A touch panel control device, wherein display data corresponding to the next coordinate is searched for based on the coordinate range and input. 2. The touch panel control device includes a shift key for shifting the display data that is enlarged and displayed, and the data that is enlarged and displayed is shifted to the left, right, up and down in response to pressing of the shift key, and is displayed by the enlarged display. The touch panel control device according to claim 1, wherein the touch panel control device is configured to display data excluded from the screen.