JP3103085B2 - Display input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a display input device used for an information processing device such as a personal computer.

(Prior Art) In recent years, there has been a remarkable progress in the development of information processing devices such as personal computers, and particularly, laptop personal computers in consideration of portability have been steadily becoming smaller and lighter. In such an information processing apparatus, a CRT, an LCD (Liquid Crystal Display Panel), a PDP (Plasma Display Panel), or the like is used as a display device, and a mouse is frequently used in addition to a keyboard as a pointing device on a display screen. ing. In this type of device, the operation is controlled while designating the position of a control menu or icon displayed on the display screen using a mouse on a desk. Also, drawing and knitting work can be executed using this mouse without using a keyboard. Specifically, a cursor is displayed on the display screen corresponding to the position indicated by the current mouse, and pointing control for moving the cursor on the screen is performed based on the amount of mouse movement accompanying the mouse moving operation on the desk.

However, this pointing control requires an occupied area associated with the relative movement of the mouse in addition to the occupied area occupied by the information processing device on the desk.

On the other hand, in a handwritten character recognition device using CAD (Computer Aided Design) or an online handwritten character recognition technology, a position detection device generally called a tablet is widely used. This tablet is a flat plate composed of a plurality of electrodes in the X direction and the Y direction orthogonal to each other, is installed integrally on the screen of the display device, and performs pointing or writing operation with an input pen on the tablet. , The coordinates of the input position can be detected.
This tablet and pen input method solves the problem of the area occupied by the mouse, but on the other hand, the cursor moves around the movement of the input pen. The shadows make it difficult to see and the operability deteriorates.

(Problems to be Solved by the Invention) As described above, in recent information processing apparatuses, a mouse is widely used as a pointing device on a display screen, but requires an occupied area for operating the mouse.
Further, in the case where a tablet is provided on the display screen and pointing is performed with the input pen, there is a problem that the cursor on the display screen becomes a shadow of the hand or the input pen and the operability is reduced.

The present invention has been made in view of the above circumstances, and has as its object to provide a display input device using a pointing device that does not particularly require a desk space for cursor operation and does not reduce operability. Is to provide.

[Configuration of the Invention] (Means and Actions for Solving the Problems) The present invention provides a display unit and a coordinate input unit (tablet) which is provided integrally on the display unit and generates coordinate data corresponding to the designated position. ), Input means for instructing and inputting an arbitrary coordinate position of the coordinate input section, and coordinate data obtained by the input means in accordance with a correction value for displaying a cursor at a desired position separated by a predetermined distance. And a cursor control means for displaying a cursor on the display unit in accordance with the coordinate data obtained by the correction means. The correction value determined by instructing the coordinates of the cursor position by the input means is stored in a memory. When the cursor is displayed, the correction value stored in the memory is read out, and the input means The cursor is displayed at a predetermined interval from the position coordinates actually indicated on the display screen.It does not occupy the desktop space like a mouse, and the pointing with a tablet and input pen. However, since the cursor is not shadowed by the hand or the pen and the cursor is displayed at an easily visible position, the operability can be improved.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the circuit configuration of the input device. Reference numeral 10 denotes a display input comprising a liquid crystal display panel 11 and a coordinate input tablet 12 formed by a transparent electrode plate integrally provided on the display screen of the liquid crystal display panel 11. It is a device that enables screen display and coordinate input on the same screen. A stylus pen 13 indicates an input coordinate position on the coordinate input tablet 12. The coordinate input tablet 12 has a structure in which transparent power is arranged in a matrix of X direction and Y direction orthogonal to each other on a transparent glass panel. The X electrode is driven by an X electrode driving circuit 15 and the Y electrode is driven by a Y electrode. A voltage is sequentially applied by the circuit 16. The X-electrode drive circuit 15, the Y-electrode drive circuit 16 and the stylus pen 13 operate under the control of the tablet controller 14, and the position indicated by the stylus pen 13 is the same as the position indicated by the stylus pen 13 or the position indicated by the stylus pen 13. Is detected on the basis of the electrostatic induced voltage induced between the electrode and the electrode embedded therein and the timing of detecting the voltage. The pen tip of the stylus pen 13 has a built-in switch, and when the pen tip is pressed against the coordinate input tablet 12 with a pressure equal to or higher than a predetermined value, the switch is captured as an ON voltage signal. The captured ON-voltage signal is converted into a coordinate value (x, y) in the coordinate input tablet 12 via the tablet controller 14 and sent to the CPU 17. 18 is a video RA where display images such as figures and handwritten characters are written
M (V-RAM) 19 is an LCD controller that controls the display of the liquid crystal display pattern 11 and controls the writing / reading of the video RAM 18 and controls the interface with the CPU 17. CPU 17 is tablet controller 14, LCD
It is a control center of each component connected to the coordinate input tablet 12, the liquid crystal display panel 11, etc. via the controller 19, and performs arithmetic control according to a program stored in a main memory (not shown), in particular, cursor control and a stylus. Correction calculation with the pointing coordinate position of the pen 13 is performed.

Next, the operation of the above embodiment will be described with reference to FIGS.

FIG. 2 is a flowchart for explaining the cursor position setting process. The activation of this process is performed by inputting a cursor position setting process with the stylus pen 13 in a display screen state as shown in FIG. 4 (A). That is, in FIG. 4 (A), the liquid crystal display panel
It is assumed that there is an icon area 20 displaying an icon indicating a work menu as a display screen in 11, and a work area 21 for actually performing drawing and handwriting input.
When the "+" icon 20a in 20 is clicked with the stylus pen 13, the processing of FIG. 2 is started.

To its processing beginning displays the cursor C ₀ indicated by the symbol "+" in the center of the screen of the liquid crystal display panel 11 (step A1).

In response to the display of the cursor, the operator uses the stylus pen 13 to input a desired position corresponding to the cursor currently displayed at the center of the screen so as not to be shadowed by the hand or the stylus pen 13. Here, for example, operator A right-handed, illustrates an example of clicking with the stylus pen 13 position spaced about 3mm in the lower right of the cursor C ₀ of the center of the screen as a display position of the new cursor C _1, If the operator is left-handed, the cursor at the center of the screen
And thus to instruct enter the lower left of C _0. Stylus pen 13
On the screen of FIG. 5, the coordinates of the position designated by the stylus pen 13 are read and recognized as shown in the figure (step A).
2).

Subsequently, it is determined whether or not the pen switch of the stylus pen 13 is ON (step A3).

When the pen switch is turned on, the coordinates of the position previously designated by the stylus pen 13 are determined. The voltage signal generated by turning on the pen switch is converted into coordinate data and sent to the CPU 17. CPU17 calculates the difference between the position coordinates and the position coordinates of the cursor C ₁ determined by the pen switch of the cursor C ₀ of the central area of the stylus pen 13 (Δx, Δy) (step A4), corrected with this The values are stored in a memory (not shown) (step A5), and the cursor position setting process shown in FIG. 2 ends. This memory uses a memory backed up by a power supply battery, and its contents are not erased even when the power is turned off, so that the correction value is also held.

FIG. 3 shows input coordinate detection processing when the pointing is actually performed on the coordinate input tablet 12 by the stylus pen 13. After the cursor position setting processing shown in FIG. Executed as input processing. The screen input processing includes a pointing mode shown in FIG. 4A for graphic input and a writing mode for handwritten input as shown in FIG. 4B described later. In the icon area 20 of FIG. 4B, 20b is a writing mode icon, and 20c is a pointing icon. In the pointing mode, the above-described correction processing of (Δx, Δy) is required to improve the operability of input, but in the writing mode, in order to provide operability like “paper and pencil”, No correction processing is performed.

In order to detect the input to the coordinate input tablet 12 by the stylus pen 13, the tablet controller 14 is first used.
Is performed (step B1). Specifically, the tablet controller 14 normally sends a sampling signal to the coordinate input tablet 12 at a frequency of 100 to 200 times / second, but a voltage signal generated at coordinates pointed by the stylus pen 13 is sampled, This voltage signal is converted to coordinate data (x ₁ , y ₁ ). The CPU 17 reads the coordinate data (x ₁ , y ₁ ).

Subsequently, the CPU 17 displays the stylus pen 13 in the icon area 20.
Data (x ₁ , y ₁ ) that read whether or not it is placed in
(Step B2).

If the stylus pen 13 is placed in the icon area 20, it is determined whether the pen switch is ON (step B).
7) If the pen switch is ON, predetermined icon control such as inverting the selected icon is performed (step B8).

When the stylus pen 13 is placed in an area other than the icon area 20, it is determined that the stylus pen 13 is placed in the work area 21 and whether the current working mode is the pointing mode is determined. (Step B
3).

When the pointing mode for performing drawing or the like is set, the CPU 17 stores the correction value (Δ
(x, Δy) is read out (step B9), and the pointing coordinates (x ₁ , y ₁ ) by the stylus pen 13 are changed to (x ₁ + Δx, y ₁ + Δ).
y) (step B10).

Next, a cursor is displayed at the corrected coordinates (x ₁ + Δx, y ₁ + Δy) (step B11). This state is shown in FIG. 4 (A).

Next, it is determined whether or not the pen switch of the stylus pen 13 is ON (switch B12). If the pen switch is ON, a predetermined pointing mode process for displaying a figure such as a line, a rectangle or a circle is executed (step B13).

If it is determined in step B3 that the pointing mode has not been set, it is determined that the writing mode has been set, and it is then determined whether or not the pen switch of the stylus pen 13 is ON (step B4). If the pen switch is ON, a predetermined writing mode process such as displaying a handwriting is executed (step B5). This state is shown in FIG. 4 (B).

As described above, in the writing mode, "paper and pencil"
In order to provide such operability, handwriting is displayed immediately below the stylus pen 13 and coordinate correction processing in the pointing mode is not performed. FIG. 4B shows the display screen of the stylus pen 13 in the writing mode as described above. The writing mode is selected by the pencil icon 20b, and the line width of the handwriting display is selected from among four types. The state selected by the icon 20e is shown in reverse video.

After the execution of the above processing, it is further determined whether or not the input is completed based on whether or not the "EXIT" icon 20d is clicked (step B6). If the input is continued, the process returns to the first step B1 again.

[Effects of the Invention] As described in detail above, according to the present invention, a display unit, a coordinate input unit (tablet) integrally provided on the display unit, and generating coordinate data corresponding to a designated position, Input means for instructing and inputting an arbitrary coordinate position of the coordinate input unit, and correcting means for correcting coordinate data obtained by the input means according to a correction value for displaying a cursor at a desired position separated by a preset distance. And cursor control means for displaying a cursor on the display unit in accordance with the coordinate data obtained by the correction means, wherein a desired cursor position coordinate is set based on the cursor displayed on the display unit screen. Is stored in a memory, and the correction value stored in the memory is read out when the cursor is displayed, and the input means displays the correction value on the display screen. Since the cursor is displayed at a predetermined interval from the position coordinates actually indicated, it does not occupy the desktop space like a mouse, and the cursor can be moved with the hand or pen even when pointing with the tablet and the input pen. In order to display the cursor at an easy-to-see position without shadowing
A display input device capable of improving operability can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration of an embodiment of the present invention, FIG. 2 is a flowchart showing a content of a cursor position setting process, FIG. 3 is a flowchart showing a content of an input coordinate detection process, and FIG. It is a figure which illustrates a display screen. 10 Display input device, 11 Liquid crystal display panel, 12
… Coordinate input tablet, 13… Stylus pen, 14…
... Tablet controller, 15 ... X electrode drive circuit, 16
... Y electrode drive circuit, 17 CPU, 18 Video RAM, 19
…… LCD controller, 20 …… Icon area, 20a-20e
… Icon, 21 …… Work area.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 3/033-3/037 G06F 3/03

Claims (1)

(57) [Claims] A display means having a display screen; a coordinate input means provided integrally with the display means for outputting coordinate data corresponding to a designated position; and a coordinate data output from the coordinate input means. A pointing mode in which correction is performed, or a writing mode in which correction is not performed on the coordinate data output from the coordinate input means; and a processing mode specified by the mode specifying means is the pointing mode. A mode discriminating means for discriminating whether or not there is the coordinate system based on a correction value set in advance when the mode discriminating means determines that the processing mode designated by the mode designating means is the pointing mode. Correction means for correcting the coordinate data output from the input means; and coordinate data obtained by the correction means. Display input device being characterized in that comprises a cursor display means displays a cursor on the display screen of the display means in accordance with.