JPS63120328A - Input device for cursor signal - Google Patents

Abstract

PURPOSE:To move a cursor by an amount equivalent to the difference of voltage levels between 1st and 2nd memory circuits and to simplify the operation of a cursor signal input device, by storing the first output received from a voltage generator using a variable resistor into the 1st memory circuit as the present position of the cursor display and storing the voltage generated next into the 2nd memory circuit as the voltage value corresponding to a new position. CONSTITUTION:The ribbon controllers 5 and 6 using continuous variable resistors are used to a keyboard 100 of a cursor signal input device. These controllers 5 and 6 produce the signals to move horizontally and vertically a cursor. Then the output signal 50 of the controller 5 is differentiated 7 and signals 70 and 71 of rise and fall points are sampled and held 8 and 9. At the same time, the signal 50 is delayed 7a and applied to the sampling/holding circuits 8 and 9 to delay 13 the signal 71. Then the difference signal is obtained between both signals 70 and 71 sampled/held by a differential amplifier 10. Then a signal 200 is obtained from said difference signal to move the cursor right or left.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an input device for a display device, and more particularly to a cursor signal input device for inputting a signal to control the movement of the display position of a cursor. .

[Conventional technology]

Figure 2 shows a conventional keyboard (including cursor input device)
- In the figure, (100) approximately indicates a keyboard, (11, I, (33).

(4) controls the movement of the cursor display position (Ill).
This key is used to input the signal. In most cases, the unit of movement of the cursor is one column of character array in the horizontal direction and one line of character array in the vertical direction, so the following explanation assumes such a movement unit. In addition, as shown in Figure 2,
In many cases, an arrow is marked on the key top to indicate the direction of movement.

When the operator presses any of the keys (1), 2 (2), +3), and (4), one pulse is output for each press. This pulse is input to a display control section (not shown) and moves the display position of the cursor by a unit amount in the direction of the arrow shown on the top of the key. To display the cursor at the desired position, press the key +11,
You must press the appropriate key among f2+, +31, (41) the required number of times.

[Problem that the invention seeks to solve]

Since the conventional cursor signal input device is configured as described above, the problem is that if the cursor is moved a considerable distance from the current display position and the cursor is to be displayed, a key must be pressed several times in succession. , and I had to memorize the key layout.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cursor signal input device that can completely change the display position of a cursor in one operation.

[Means for solving problems]

In this invention, a voltage generator that generates a variable voltage using a variable resistor is used, and a voltage value initially outputted by the voltage generator is stored in a first voltage storage circuit as a voltage value corresponding to the current position of the cursor display. The voltage value to be outputted next by the voltage generator is stored in the second voltage storage circuit as the voltage value corresponding to the new position of the cursor display, and the voltage value to be recorded in the 20th pressure storage circuit is It was decided to move the display position of the cursor by an amount proportional to the voltage value difference from the voltage value stored in the first voltage storage circuit.

[Effect]

An arbitrary amount of movement can be applied to the cursor display position with one simple operation.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic plan view showing an embodiment of the present invention. In the figure, (100) indicates a keyboard corresponding to (100) in FIG. 2, and +51 and +61 are ribbon controllers, respectively. The ribbon controller is a non-sliding continuously variable resistor which in this case is used as a continuously variable voltage generator. The ribbon controller (5) is used to generate a signal to move the cursor display position left and right, and the ribbon controller (6) is used to generate a signal to move the cursor display position up and down.

FIG. 3 shows a signal generation circuit provided in the keyboard (100) in connection with the ribbon controller (5). In the figure, (5) shows the same part as the first factor (5), A ribbon controller was used as a voltage generator to generate, and (+50) is its output pressure.

(7) is a differentiating circuit which inputs the voltage (50) and generates a pulse signal (70) at its rising point and a pulse signal (71) at its falling point. (7a) is a continuous firing circuit, (s), (
9) is a sample and hold circuit (hereinafter abbreviated as "A"), (It)) is a differential amplifier, (11) is an analog-to-digital converter (hereinafter abbreviated as "A"), and (12) is an A.
/1) In the register that is set by the output of (11), (
120) indicates a bit to which a sign indicating its positive/negative is set. (13) is a delay circuit, (14) is a set-reset type flip-flop, S is a set signal input terminal, R is a reset signal input terminal, and Q is an output terminal. (15) is an AND gate and (150) is a clock input gate (16)
is a preset counter and (160) is a 70 overflow signal. In most cases, negative numbers are set in the register (12) in complementary form, but the preset counter (12)
6) is set to the absolute value of the numerical value of the contents of register (12).

Also, the LSB (i lower bit) of the output of A/l) (11) is the key +11 in the conventional I shown in FIG.
(21, +33.

(4) to correspond to one pulse generated from A/
1) Eleven quantum traces of (11) are defined.

The output voltage of the ribbon controller (5) is zero when the top of the ribbon controller (5) is not pressed with a finger, and when the top of the ribbon controller (5) is pressed with a finger, a voltage corresponding to the point where the pressure is applied is outputted. For example, if you press the right shoulder of the ribbon controller (5) with your finger, the maximum voltage will be output, and the voltage will drop as you move to the left.
It is assumed that the minimum voltage is output when the left end is pressed with a finger.

Next, the operation for moving the cursor display position from the current position to the right will be described. The operator presses a point on the left side of the ribbon controller (5) with his finger. The output voltage (50) suddenly rises from zero to the first voltage value corresponding to the position of finger pressure, and the differentiating circuit (7) generates a pulse signal (
70) occurs. This pulse signal (70) causes the first
Bold the 0 inkstone pressure value to S/14 +81. The delay circuit (7&) provides a time delay equal to the delay from when the 10th α pressure value is input to the differentiator circuit (7) until the pulse signal (70) is output.The operator then moves the ribbon controller (5) to the right. If you trace it with your finger, the output voltage (5o
) gradually increases. The outlet pressure (50) is the 20th tonne pressure 1
When the operator removes his/her finger from the ribbon controller (5), the output voltage (nu) suddenly drops to zero, pulse No. 13 (71) is generated, and the second voltage value becomes 84.
Hold sumo on i9+.

Generally, S no i +81 is the 10th α pressure memory circuit, S
/1191 is called a second voltage storage circuit.

The differential amplifier (10) outputs a voltage proportional to the difference voltage between the second voltage value stored in the S/HI 91 and the first voltage value stored in the S/I (181). ) is converted into a digital signal and set in the register (12).When converted into a digital signal, the LSB (least significant bit) of the digital signal is converted into a digital signal by using the keys ill, I2), +31, (4) in the conventional device. The quantization accuracy is determined to correspond to one pulse generated by pressing the button twice. The absolute value of the numerical value represented by the register (12) is set in the preset counter (16).

The delay circuit (13) finishes presetting the preset counter (16) from the time the pulse signal (71) is generated. The flip-flop (14) is set by giving a time delay until . Clock input < 150) is an AND gate (1
5), the preset counter (16) is counted down, and when the value reaches zero, an overflow signal (160) is output, which resets the flip-flop 2 (14) and inputs the clock using the AND gate (15). (150) is prevented. That is, a pulse proportional to the absolute value of the difference between the second voltage value and the first voltage value is output from the AND gate (15).

If the output pulse of the AND gate (15) and the bit (120) representing the positive/negative sign are given to the display control device as an output signal (200), the key (1
) or (2) several times in succession to move the cursor display position.

The above has been explained in relation to the ribbon controller (5), but the ribbon controller +63 is also provided with a circuit similar to the circuit shown in FIG. can move the cursor display position in the same way as pressing either the +31 or +141 key several times in succession in conventional devices.

Note that in the embodiment shown in FIG. FIG. 4 is a block diagram showing another design example of the signal generation circuit, in which the same reference numerals as in FIG. 3 indicate the same or equivalent parts, ci7) is V], (18) is Register (19) is a second register, and (20) is a subtracter. Also in Fig. 4, a ribbon controller (51), a differentiation circuit (7), a delay circuit (13), a flip-flop (1
4), AND gate (15), preset counter (
16) The clock input (150), overflow signal (IO2), and output signal (200) are connected and connected to VC as in the case of Fig. 3, but in Fig. 4 (: is not shown. In the design shown in the figure, the output of the delay circuit (7a) is converted to an A/D
(17), the signal is converted into a digital signal and then processed by a digital circuit, and a digital signal subtracter (20) is provided in place of the differential amplifier (10).

Furthermore, the key (1) shown in Fig. 2 is placed on the right side of the ribbon controller (5), and the key (2) is placed on the right side of the ribbon controller (5).
), the key (3) is placed above the ribbon controller (6), and the key (4) is placed below the ribbon controller (6), and these keys are used to finely adjust the cursor display position. You can also do it.

In addition, in the two embodiments, a ribbon controller, which is a type of conductive plastic variable resistor, was used as the variable resistor, but any other variable resistor may be used; It is only necessary to provide means for inputting the voltage value into the first storage circuit and the second voltage value into the second storage circuit.

〔Effect of the invention〕

As described above, according to the present invention, the operation of significantly moving the cursor display position becomes easy.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing an embodiment of the present invention, Fig. 2 is a schematic plan view showing a conventional device, and Fig. 3 is a signal generator provided in the keyboard in connection with the ribbon controller shown in Fig. 1. 4 is a block diagram showing an example of a circuit; FIG. 4 is a block diagram showing another example of a signal generating circuit provided in the keyboard in relation to the ribbon controller of FIG. 1; FIG. +51, [61 are ribbon controllers, f
8) and (18) are the first voltage storage circuit, respectively;
t9) = (19) are respectively the second magnetic pressure memory circuit,
(10) is a differential amplifier, (20) is a differential amplifier, and (20) is a differential amplifier. Vessel, (12
) is a register, and (16) is a preset counter. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (4)

[Claims] (1) In a cursor signal input device that inputs a signal to move the display position of a cursor on the display surface of a display device, a voltage generator that generates a variable voltage using a variable resistor; means for inputting the voltage generated by the voltage generator into the first voltage storage circuit; means for inputting the voltage generated by the voltage generator into the second voltage storage circuit; 1
Means for representing the difference between the voltage value and the voltage value stored in the voltage storage circuit as a digital signal with predetermined quantization accuracy; 2. A cursor signal input device comprising: means for generating a signal for controlling the amount of movement of the cursor from its current position based on the absolute value of the digital signal. (2) The cursor signal input device according to claim 1, wherein the voltage generator generates the variable voltage using a non-sliding type variable resistor called a ribbon controller. (3) The first voltage storage circuit is a first sample and hold circuit, the second voltage storage circuit is a second sample and hold circuit, and the means for representing the difference voltage value as a digital signal is the first and second voltage storage circuit. Claim 1 characterized in that it comprises a differential amplifier that inputs the voltage of the second sample and hold circuit, and an analog-to-digital converter that converts the output voltage of the differential amplifier into a digital signal. Cursor signal input device. (4) The first voltage storage circuit is a first register that stores a digital signal obtained by converting the output voltage of the voltage generator by an analog-to-digital converter, and the second voltage storage circuit stores the output voltage of the voltage generator. is a second register that stores a digital signal converted by the analog-to-digital converter, and means for representing the difference voltage value as a digital signal subtracts the contents of the first register from the contents of the second register. The cursor signal input device according to claim 1, further comprising a subtracter.