JPH02138614A - Coordinate position input device - Google Patents

Abstract

PURPOSE:To reduce the number of parts by constituting the tille device so that a CPU executes an operator processing by using a moving amount of a cursor as a function of time so that 180 deg. can be covered even if the center angle of an annular switch substrate placed orthogonally with regard to X and Y axes. CONSTITUTION:The inclination of an operation rod 6 of a joy stick is divided by the processing capacity of a data processor, a resolution for displaying a cursor position on an image display surface is derived, and also, a switch substrate 1 having the central angle of 1/several of 180 deg. with regard to X and Y axes is provided. In such a manner, smoothly with an equalized load in the whole azimuth the digital data processing directly with the rotational angle and the small number of parts can be executed and the long service life can be expected. Also the moving time of the cursor can be changed arbitrarily by making a program set to a CPU 30 variable.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention detects and calculates the movement length of a joystick having a short and short operating rod from a fulcrum using digital values in accordance with the position of a cursor on an image display surface. It is useful as a coordinate position input device that can be operated smoothly in all directions, and has a wide range of applications in recent electronic equipment such as office automation equipment, education and training, and entertainment.

``Conventional Technology J The basic configuration of a joystick is that the operating rod is skewered around the rotation axis, which is the adjustment axis of variable resistors that are arranged close to each other orthogonal to each other. After the operation of the operating rod is completed, the operating rod is held in a vertical position using the elastic force of a return spring suspended from the rotation axis. The load applied to the operating rod is the sum of the elastic force of the two return springs and the sliding friction resistance at the rotation support, and when the operating rod is operated in an oblique direction, the two return springs are The load applied to the operating rod due to the elastic forces of the springs becomes uneven depending on the angle of inclination of the operating rod and its direction, and the shorter or shorter the operating rod is, the larger the load it receives will be and the disadvantage will be that it will vary. .

Therefore, as a proposal to solve the above-mentioned drawbacks, for example,
Utility model registration application No. 131969 is known,
This has a complicated structure in which the short operating rod from the fulcrum receives the load uniformly in all directions and returns to the vertical position when stationary, which poses a problem in terms of smooth operation of the joystick.

On the other hand, in order to change the coordinate position on the image display surface by operating the joystick, the voltage value of the variable resistor corresponding to the amount of movement in the X and Y axis directions is converted into a digital value by an A/D converter, and the capacitor is If the coordinate position is determined based on the time constant until the predetermined capacitance is reached in combination with the above-mentioned variable resistor, the disadvantage is that the detection time will inevitably vary due to fluctuations in the above-mentioned time constant. be.

Therefore, as a proposal to improve the above-mentioned drawbacks, for example, JP-A-61-
According to the document No. 33529,
Although the coordinate position is detected by digital values, the direction of movement is determined based on the number of fine identification lines crossed by the vertical and horizontal coordinate position indicators.

Since this method uses a method of detecting the amount of , it has the disadvantage that it requires many steps to process input data after detection, which ultimately takes time.

"Problems to be Solved by the Invention" In view of the above-mentioned vertical obstacles, the present invention provides a joystick that covers all directions in the X and Y axis directions in relation to the movement of the cursor on the image display surface. The present invention aims to provide a coordinate position input device that can directly send digital data by slightly rotating a contact switch part, has a high calculation processing speed, and has a small number of parts overall.

``An unsuccessful means to solve the problem'' However, the present invention focuses on the fact that the relationship between the inclination angle of the joystick's operating stick and the processing capacity of the processor is related to the resolution for displaying the cursor position on the image display surface. X
, VccPU, which covers 180 degrees even when the central angle of the annular switch board arranged orthogonally to the Y axis is interposed, is configured to be able to process the amount of movement of the cursor as a function of time.

An embodiment of the present invention will be described in detail below with reference to the drawings.

``Example'' First, FIG. 1 shows the X, Y coordinate position input device of the present invention.
Coordinates: 1. Side view of the main parts of the joystick for the axis,
FIG. 2 is a circuit configuration diagram of an encoder that combines a joystick and a resistor for the X and Y axes, and a CPU that controls calculations.

In Fig. 1, 1 is the switch board, 2 is the rotation axis 0, 4 is the center of rotation, 4nT, T2. '1'
,.

T4 and the common track Tc are conductive patterns arranged with equal pinches P on a concentric circumference while rotating, and are provided up to the maximum number of pins as a whole. θ is the maximum central angle of the Swiss-Sochi substrate provided with the conductive pattern, 3 is the non-conductive area on the Swiss-Sochi substrate, 60.61
, 62, 63. 64 are fixed arm terminals mounted on the support member 5; 50. 51. 52.53° 54 is a sliding contact whose tip is flexible and slides into contact with the conductive pattern and non-conductive area on each track; 6 is a joystick 1;
0 operation stick.

The switch board is supported on the wall surface of the outer casing of the joystick, and in this embodiment, the support member is configured to rotate within a maximum center angle of 60 degrees.

Furthermore, when the operating rod is rotated in all directions indicated by the arrow, the X-axis shaft 7 and the Y-axis rank 8, both ends of which are supported on the outer wall, reciprocate through a certain angle, and the operating rod is rotated in the direction indicated by the arrow. When tilted in the C direction, the X axis reciprocates in the C direction in the hollow part of rank 8 along the Y axis.

If the center angle of the switch board is, for example, 60 degrees, then
In order to cover 180 degrees each for the X- and Y-axis shafts, it is necessary to feed the switch board three times 60 degrees each and collect on and off data, but the rotation of the X-axis shaft and Y-axis rank is The moving angle can be made small, which is advantageous for operating speed.

Since the above switch board is fixed and does not move, when the sliding contact reaches the edge on the switch board, the CPU determines that it maintains contact with each track for a certain short time and continues for the next 60 degrees. It operates to detect data.

If the above-mentioned center angle becomes a pinching angle such as 20 degrees, conductive pattern rows on the same track cannot be detected as on/off signals, so the angle can be adjusted to a practically appropriate angle that can be composed of pattern rows of conductive and non-conductive regions. It is preferable to set

Therefore, the sliding contact rotates in sliding contact with the surface of the switch board, and the signals obtained from the function as an electrical switch at time t and vc become digital outputs of 1-0-0-0 in order from track T1. 2, the digital output is 0-1-1-0.

In this way, when you operate the control stick of the joystick 9 while watching the movement of the cursor on the image display, the electric switches provided at the ends of the X and Y axes at that point will receive digital signals indicating whether they are on or off. The encoder that sends out the data will be sent out.

Next, Fig. 2 VC, J: Redigital switch SW, and Hi S
Resistors 111 to 114 and 21 connected to each sliding contact as a joystick and a voltage generating part that constitute W2
The operation of the encoder 20 dedicated to the X and Y axes consisting of X and Y axes 1 to 214 and the CPU 30 that performs the data processing function will be explained. The figure shows that none of the sliding contacts is in the "1" state, in which they are not in contact with the conductive pattern.

A digital signal of "0" or °l obtained by conduction or non-conduction of each track between the conductive pattern and the sliding contact is a voltage drop based on the energization of the resistor connected to each sliding contact. For example, if you set it to 5 volts, "1
A 5 volt output is obtained corresponding to the ° output and applied as an input to the CPU.

The common track 'Pcy' or 'cx' provided on the switch board of the joystick is a continuous conductive pattern, so it always remains in contact with the sliding contact regardless of the coordinate position and performs the electrical grounding function. There is.

Therefore, the CPU determines the cursor position VcX on the image display surface.

By aligning the origin of each Y-axis, we receive an input of 0 or, for example, 5 volts in response to the on/off signal from the joystick, process the captured data by comparing it with the built-in reference clock, and calculate the time. The amount of movement of the cursor is detected as a function of
It can be output from.

If the cursor on the screen moves from point A to point B, the origin of the X and Y axes will also move from point A to point B, and the amount of movement is calculated on a time scale. be able to.

"Effect" Thus, according to this coordinate position input device, the resolution for displaying the cursor position on the image display surface is calculated by dividing the inclination angle of the joystick's operating rod by the processing capacity of the data processor, and the resolution for displaying the cursor position on the image display surface is Since it is sufficient to provide a switch board with a central angle of a fraction of 180 degrees with respect to the Y-axis, it is possible to perform digital data processing directly with a smoothly uniform pressure load in all directions with a small rotation angle and a small number of parts. You can expect it to last a long time.

Further, by varying the program for setting the CPUVc of the cursor movement time, it is possible to change it arbitrarily, and other excellent effects not seen in the past can be achieved.

[Brief explanation of the drawing]

FIG. 1 shows X in the coordinate position input device of the present invention. A side view of the main parts of the joystick for any one of the Y-axes,
FIG. 2 is a circuit configuration diagram of an encoder that combines a joystick and a resistor on the X and Y axes, and a CPU that performs arithmetic processing. 1... Switch board, 2... Conductive pattern, 3
...Non-conductive part, 4...Track, 5...Supporting member, 6...Operation rod, 50-54...Fixed arm terminal, 60-64...Sliding Moving contact, 7...
X-axis shaft, 8...Y ill crank, 20.
...Encoder, 30...CPU, 31...
Data output, 111-114 and 211-214...
·Resistor.

Claims (1)

[Claims] a CPU that calculates the amount of movement as a function of the travel time of a cursor that moves on the image display surface by dividing the inclination angle that the joystick's operating point makes with the horizontal plane by the processor's information processing capacity of 2^n bits; Of the quadrants divided into four by the X and Y axes, which have their origin at the cursor resting point, two adjacent quadrants corresponding to the X and Y axes mentioned above,
A plurality of sliding contacts that move in conjunction with the rotation of the operating rod with the origin as the rotation center, and tracks with a number of bits of 2^n are arranged concentrically at equal pitches with respect to the rotation center where the sliding contacts slide. and a switch board on which a conductive pattern is formed by dividing the total number of tracks into a maximum of 2^n, and the sliding contactor and each track on the switch board can be brought into contact or non-contact at the same time. A coordinate position input device characterized by converting and transmitting a digital signal of "0" or "1".