JPS58129643A - coordinate input device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cursor control device for indicating coordinates in a display device such as a character display or a graphic display.

Conventionally, in order to indicate the coordinates of a character position, graph position, etc. on a display, a cursor mark of a specific shape is displayed on the display, and this is moved on the screen using a cursor movement key or joystick. The method used is to move to an arbitrary coordinate point and read the coordinates. However, it was not possible to move the cursor at variable speeds, such as moving a long distance at high speed or conversely moving a small distance little by little.

In order to solve the drawbacks of such conventional methods, the present invention has the following features:
In coordinate indicating devices such as cursor movement keys and joysticks, by changing the moving speed of the cursor according to the applied force, that is, the displacement, it is possible to improve operability by providing coordinate indication that suits the senses. The purpose is to measure.

The present invention will be described in detail below with reference to Examples.

FIG. 1 shows an embodiment of the ffl log input device according to the present invention.
Depending on the force applied to the joystick, the coordinate value corresponding to the cursor position shown on the display is calculated. It is a block diagram for updating.

The joystick 1 is normally neutral and outputs an analog voltage in the X direction or Y direction according to the force applied by p1.

Since the following explanation is the same for the X direction and the Y direction, the X direction will be explained. The analog voltage from the joystick is A
It is converted into a digital LID by D conversion story 2 and set in the displacement value register 3 by the set signal t1. The conversion table memory 4 outputs a cursor coordinate increment value Δ)l proportional to the displacement value. As shown in Figure 2, the content is a comparison table for outputting 9 mV according to the input value, and outputs a value (coordinate increment in unit time T) that gradually increases in proportion to the displacement (relative value) of the joystick. . Negative values correspond to displacement of the joystick in the opposite direction.

The output ΔX of this conversion table memory 4 is the set signal t1
is set in the increment value register 5.

The adder 6 adds this increment value ΔX and the coordinate value X output from the coordinate value register 7. This addition result X+ΔX is
is set in the coordinate value register 7 by the set signal t,
The coordinate value is updated from X to 5X+ΔX. The coordinate value Y is also updated to Y+ΔY in four ways. As a result, the position of the cursor mark displayed on the screen display 9 by the video circuit 8 changes from (X, Y) to (X + ΔX, Y + ΔY
) will be updated.

The timing generator 10 is in charge of control for repeatedly executing the above series of operations 1, ttt, at a predetermined period T in the timing order. This control procedure is summarized in Figure 3.

With the above configuration, coordinate value register 7 (or 27)
The content of is that the increment value ΔX (or ΔY) corresponding to the force applied to the joystick l is the period T (0.1 in the example in Figure 3).
seconds) and change one after another. The rate of change in this coordinate value depends on the contents of the conversion table memory 4 shown in figure wk2 L! In the example shown in Figure iI2, it is proportional to the force applied to the joystick. Therefore, the coordinate values also change in the direction of the force applied to the joystick. Furthermore, both minute and high-speed cursor movements can be freely controlled by adjusting the total force applied to the joystick.

As a second example, the fourth example is a case where the cursor coordinates are moved little by little (for example, one point at a time) by flicking the joystick with a finger or operating it for a short time (for example, FIO, 5 seconds or less). This will be explained with reference to the drawings and FIG.

FIG. 4 shows a rounding configuration in which the conversion table memory 4 (or 24) in FIG. 1 is switched to the slightly different phase conversion table memory 104 during short-time operations. The contents of this minute value conversion table memory 104 are shown in FIG. This means that even if the displacement of the joystick is large, the increment value is small, indicating that the amount of coordinate movement is small.

The operation of each part is as follows. Midpoint detection circuit 101
outputs the reset signal 32 and starts the timer 102 when the joystick is not operated and the variable position 31 is 0.
'&:Reset. The timer 102 is reset (1
As soon as No. 1 32 is turned off, time measurement is started, and when it is 0.5 seconds or more, the gate signal 33 is turned off. The input gate 103 and the output gate 105 enable the conversion table memory when the gate signal 33 is off, and the gate signal 33
When is on, the conversion table memory 104 for minute values is enabled. This one work is X, Yfl! Mr. rJ.

As a result of this, the joystick may be disabled for a short period of time (less than 0.5 seconds).
When operated, the movement of the cursor on the display is determined by the conversion table memory for minute values shown in FIG.
The input/output relationship is non-linear so that even if a large force is applied to the joystick, the cursor movement will be small. If the joystick is operated for more than 0.5 seconds, the conversion table memory will move in proportion to the displacement of the joystick, as shown in FIG. Therefore, it is possible to achieve both sensuous cursor movement proportional to the force applied to the joystick and minute movement.

Note that in the interception shown in FIGS. 1 and 4, registers, memories, adders, timing generators, etc. can be realized using a microcomputer, and in that case, the configuration will be simpler. Also, the conversion table memory 4 in FIG.
It is also easy to realize the switching between 104 and 104 by rewriting the conversion table memory 4.

The coordinate values indicated by the cursor obtained in this manner can be used for character position determination and graphic coordinate value #t411, if necessary.

Please note that the cursor keys are used instead of the joystick.
Needless to say, the same effect can be obtained by providing a pressure detector capable of outputting a voltage corresponding to the pressure.

In particular, separate cursor keys are provided to move the cursor in the +X, +Y, -X, and -Y directions, and the cursor movement speed in the X and Y directions changes according to the pressure detected by each pressure detection output. can be done.

This is valid for normal character display.

As described above, by using the coordinate human power device according to the present invention, it is possible to quickly and accurately specify character positions in a character display, figure instructions or coordinate input in Graphic Nice Play.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment according to the present invention, FIGS. 2 and 5 are table memory contents showing the correspondence between input displacement and coordinate increment, and FIG. 3 is an explanation of the operation 11il of FIG. 1. Figure, 4th
The diagram shows the system for switching tables.

Claims (1)

[Claims] 1. A sampling circuit that periodically reads displacement input values, a conversion table memory that outputs coordinate increment values in response to displacement input values, and a coordinate value register that holds coordinate values; The displacement input value output from the sampling circuit is converted into a coordinate increment value by referring to the conversion table memory, and the coordinate increment value is added to the coordinate value register. coordinate input device. 2. In the configuration of claim 1, the contents of the conversion table memory are output as 0 between the center value of the input value and a predetermined threshold value, are gradually increased in the range beyond that, and are The coordinate inputs ik, Il [.