JPS61286917A - Joy stick device - Google Patents

Abstract

PURPOSE:To omit centering adjustment and to improve operability by coupling a stick with a volume and providing the stick with an automatic centering function. CONSTITUTION:The stick 1 is automatically returned to its center if a hand is removed from it. Thereby a microprocessor 5 regards a digital data value inputted from an A/D conversion part 4 as the center value of the volume 2 at the ON of a power supply, and stacks the value in a main memory or the like. When the stick 1 is operated thereafter and the value of the volume 2 is changed, the processor 5 executes processing for finding out a positive or negative shift of an inputted digital data value from the stacked center value to correct the input digital data. The corrected value is outputted as the joy stick data. Consequently, centering adjustment can be omitted and the operability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a joystick device that provides joystick data to a computer system or the like.

[Technical Background of the Invention] FIG. 3 is a diagram showing an example of a conventional joystick of this type. Reference numeral 1 is a stick, which rotates the volume 2 to change the volume value. Therefore,
Analog data corresponding to the rotation angle of the stick 1 is output. After this analog data is converted into digital data, it is input to a processor that controls a display device or the like to move a cursor on the display, or is sent as joystick data to a host system or the like via the processor.

By the way, the center of the stick 1 and the center of the volume 2 do not necessarily match due to variations in the volume 2 and installation errors. Therefore, a centering knob 3 for the volume 2 is required, and when the stick 1 is at the center and the volume 2 is not at the center, the centering knob 3 is used to adjust the center of the stick 1 and the center of the volume 2 to match. As a result, correct joystick data corresponding to the rotation direction and rotation angle of the stick 1 can be obtained.

[Problems in the Background Art] As mentioned above, in the conventional joystick device, due to variations in volume 2 and mounting errors, stick 1
A centering knob 3 is required to adjust the center of the volume 2 and the center of the volume 2, and if the two centers are misaligned, the centering knob 3 must be used to adjust the centering.

OBJECT OF THE INVENTION In view of the above-mentioned drawbacks, an object of the present invention is to provide a joystick device that eliminates the need for centering adjustment and improves operability.

[Summary of the Invention] The present invention sets the value inputted from the volume when the power is turned on or for a certain period of time as the center value, and thereafter sets the value inputted from the volume to a value that deviates positively or negatively from the center value. The above object is achieved by modifying the value and outputting the modified value as joystick data.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings, in which the same parts as those of the conventional example are denoted by the same reference numerals. FIG. 1 is an external view showing an embodiment of the joystick device of the present invention. A stick 1 is connected to the volume 2, and by rotating the stick 1, the value of the volume 2 is changed.

FIG. 2 is a block diagram showing an example of the circuit of the joystick device shown in FIG. 1. The value of the volume 2 is input as analog data to the A/D converter 4, where it is converted to digital data and input to the microprocessor 5 (which includes a main memory, etc.). The microprocessor 5 performs operations such as moving a cursor on a display device (not shown) based on input joystick data, or transmitting the joystick data to a host system through a communication interface (not shown).

Next, the automatic centering operation of this embodiment will be explained.

When the stick 1 is at the center, the resistance value of the volume 2 is not necessarily at the center due to mounting errors as described above. Therefore, in this embodiment, automatic centering as described below is performed. In other words, since stick 1 automatically returns to the center when you let go of it,
When the power is turned on, the microprocessor 5 regards the digital data value input from the A/D converter 4 as the center value of the volume 2, and stacks it in the main memory or the like.

Therefore, after that, stick 1 is operated and volume 2
When the value of is changed, the microprocessor 5 corrects the input digital data by calculating the positive and negative deviation amounts of the input digital data with respect to the stacked center value. This corrected digital data (joystick data) is sent from the microprocessor 5 to a display device (not shown) or the like.

According to this embodiment, the microprocessor 5 uses the value of the volume 2 when the joystick 1 is at the center as the central value, corrects the digital data that will be input from then on, and automatically performs substantial centering. Therefore, the device can be simplified by omitting the centering knob, and there is no need for the operator to adjust the centering of the stick 1 and the volume 2, thereby improving the operability of the device.

Note that the centering process by the microprocessor 5 is performed not only when the power is turned on, but also when the stick 1 is released, it automatically returns to the center. You may also change it to a value.

[Effects of the Invention] As described above, according to the joystick device of the present invention, when the power is turned on or for a certain period of time, the value input from the volume is set as the center value, and the value input from the volume thereafter is set as the center value. By correcting the value to a positive or negative value and outputting the corrected value as joystick data, it is possible to eliminate the need for the operator to adjust the centering of the joystick, thereby improving operability.

[Brief explanation of the drawing]

FIG. 1 is an external view showing an embodiment of the joystick device of the present invention, FIG. 2 is a block diagram showing an example of the circuit of the device shown in FIG. 1, and FIG. 3 is an example of a conventional joystick. FIG. 1...Stick 2...Volume 4...
・A/D conversion section 5...Microprocessor agent Patent attorney Book 1) Takashi Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] In a joystick device that rotates a volume by operating a stick and outputs joystick data corresponding to the rotation angle of the stick, center value setting that stacks the value input from the volume at power-on or for a certain period of time as the center value. and data correction means for correcting the value of the volume input thereafter to a positive or negative deviation amount from the center value, and the correction value is used as joystick data.