KR20000063279A - 2, 3D location information input device using accelerometer - Google Patents

Abstract

PURPOSE: Two-dimensional and three-dimensional location information input device using an accelerometer is provided to measure location by using an accelerometer, thereby completely transmitting the signal without contacting a pad or a plane and exactly controlling the pointing device even in an airplane or a moving vehicle. CONSTITUTION: In a pointing device having one or more click button for transmitting command, wherein two-dimensional and three-dimensional location information input device using an accelerometer includes an accelerometer module(11) for three-dimensional location information, a CPU(12) calculating the duty ratio generated during movement, a control switch(13) setting a basic location in the space, and a right switch and a left switch(6,7) playing a role of a general mouse.

Description

2, 3D location information input device using accelerometer {.}

The present invention relates to a two- and three-dimensional wired and wireless pointing device using a change in the duty ratio of the accelerometer.

In general, a pointing device is a device for inputting the position of a cursor on a display screen, and a mouse is a representative pointing device used in a computer.

The conventional pointing device is placed on a flat surface such as a desk, and the relative displacement between the pointing device and the plane is detected by a ball or optical method, and the displacement is reflected in the displacement of the cursor displayed on the screen of the computer. Communication and control from the pointing device to the computer were performed.

FIG. 1 is a view illustrating an inner tube of a ball mouse which is generally used. As shown in FIG. 1, when a ball mouse is moved by touching a ball 1 of a ball mouse on a flat surface, the ball rotates. In the ball mouse, since the vertical roller 2 and the horizontal roller 3 are positioned at an angle of 90 ° to each other and are in contact with the balls, the two rollers also rotate as the ball rotates. At this time, the vertical roller corresponds to the vertical movement of the cursor on the display screen, and the horizontal roller corresponds to the left and right movement of the cursor.

Each roller is connected to a wheel called an encoder 4 so that the encoder rotates as the roller rotates. A signal proportional to the amount of rotation of each encoder, that is, the amount of movement of the mouse, is generated from each encoder and transmitted to the computer through the one chip controller 5.

The computer receives the signal from the mouse and displays the cursor at the location on the corresponding display screen.

At the top of the ball mouse, on the other hand, there are buttons (6,7), which are pushed to each other and the signal is also sent to the computer via one chip controller.

However, the mouse as a location information input device has disadvantages in many ways. First, the ball mouse has a characteristic of incompletely transmitted signal due to the contact of a mechanical device and a short lifespan. In addition, the optical mouse must be used on the mouse pad that recognizes the sensitivity of the mouse.

These mice also have the disadvantage of having to touch the plane, and also because they have to move with their arms and wrists, the momentum is greater than other devices.

In addition, there is a limitation of distance by connecting a mouse and a computer by wire, and in order to perform a presentation or the like, another equipment or an auxiliary operator who additionally manipulates a pointing device is required. There is also a problem such as being limited in operational distance.

In addition, it has only two-dimensional plane position information values, not three-dimensional values.

Currently, a three-dimensional pointing device uses a laser or infrared method, but in this case, expensive equipment must be used, and the position of the object to be measured is restricted.

An object of the present invention is to propose the present invention to supplement and develop a pointing device such as a mouse having the above disadvantages, and to secure the disadvantages of various position measuring devices. That is, since there is no mechanical contact such as a ball mouse, incomplete signal transmission by the contact does not occur, there is no effect on the mechanical life, and the input device does not necessarily touch the pad or the plane. In addition, it is possible to manipulate the point by the movement of the wrist without moving like a general input device by moving in space or moving on a support without moving on a two-dimensional plane. In addition, by inputting three-dimensional spatial information rather than two-dimensional it can be used in a two-dimensional display or a three-dimensional display device.

1 is a schematic diagram of a typical mouse currently in use

2 is a view for explaining a change in the duty cycle caused by the reference duty ratio signal and rotation in accordance with the concept of the present invention;

3 is a schematic diagram of a wired pointing device of the present invention.

4 is a block diagram of a two- and three-dimensional wired pointing device implementation of the present invention.

5 is a schematic view of a wireless pointing device of the present invention;

6 is a block diagram of a two- and three-dimensional wireless pointing device implementation of the present invention.

Figure 7 is a schematic diagram of a wired pointing device using a support which is another embodiment of the present invention

8 is a schematic diagram of a wireless pointing device using a support which is another embodiment of the present invention;

<Description of Drawing>

1. ball 2. vertical roller

3. Horizontal Roller 4. Encoder

5 one chip controller

6, 7. Click button 8. RS232C

11, 11a, 11b, 11c accelerometer 12. CPU

13. Control switch 14. Antenna

15. RF Module 16. Pointing Device

17. Support

The present invention configured for the above object,

A pointing device provided with at least one click button for transmitting a command, comprising: rotation sensing means for detecting rotation in space, and rotational direction by measuring a change in duty ratio of rotation sensed by the rotation sensing means; There is provided a position information input device comprising a calculation means for calculating a and a control means for transmitting the information calculated by the calculation means and information on whether or not the click button is pressed to a computer.

The position information input device of the present invention further includes radio signal conversion means for converting data from the control means into a radio signal, and an antenna for transmitting a radio signal converted by the radio signal conversion means to a computer. You may be.

The positional information input device of the present invention may further include reset means for setting a reference position (for example, the center of the display, etc.) in space.

A feature of the invention is to use an accelerometer with two axes or one axis for two-dimensional pointing devices and one axis or three axes for three-dimensional pointing devices to generate a position, Each coordinate is made to be perpendicular to each other and that the display is positioned with a constant duty ratio change that occurs in the accelerometer, rather than the digital signal of a typical pointing device. The position value and the signal of the click button generated by the device are input to the computer through the serial port or wirelessly to the computer through the wireless signal conversion means and the antenna.

In particular, the present invention is the inconvenience that the general user feels most when using a computer, that is, the need to frequently use the mouse during the work, each time to move the mouse to the top, bottom, left, right of a certain plane flat surface It is possible to change the position of the point even in a small space by using the change of the posture in a certain space by removing the. That is, only the rotational movement of the wrist can change the position of the point.

Further, in another embodiment of the present invention, the position of the point can be adjusted by fixing the pointing device on the support and rotating the pointing device at that position. Therefore, it is possible to alleviate the inconvenience that many users feel when using the computer, that is, to use the mouse frequently during the work, to move the hand, to hold the mouse, and to move on the plane in the work space.

In addition, since the device of the present invention can be used as a pointing device in a space, such as during a presentation or the like, the method used so far, that is, the user moves directly to a location where a computer is installed and moves a mouse or other The assistant presenter can perform the presentation and the computer operation simultaneously with the pointing device without the assistant operator adjusting the pointing position using the mouse or the keyboard.

(Example)

First, before describing the embodiment of the present invention, the basic concept of the present invention will be described.

In the present invention, the position can be calculated by measuring the change in the duty ratio of the accelerometer without converting an analog signal into a digital signal using an A / D converter or controlling the signal by the mouse controller.

In other words, an accelerometer using MEMS technology generates a signal at regular intervals, where the duty ratio of the signal changes in proportion to the rotation value. 2 shows a change in duty ratio due to rotation in one direction with respect to a reference duty ratio in a constant state. Here, the duty ratio represents the ratio of the clock signal clock9 at the high level HIGH to the clock signal clock8 in one cycle, It can be expressed as

That is, the direction of rotation is determined by the change of duty ratio by rotation based on the reference duty ratio, and this information is sent to the CPU to measure the size of the duty ratio by the internal clock of the CPU. If the value is larger than the set value, it is determined that the actual movement of the cursor is required, and the cursor is moved. In order to stop the movement of the cursor, a method of rotating the device to the reference position or operating the cursor control switch is used. This is possible by using the rotation direction and the magnitude thereof, rather than converting the acceleration value existing in the accelerometer to a position value.

Hereinafter, described in detail by the accompanying drawings as follows.

FIG. 3 is a diagram illustrating a configuration in which the location information input device of the present invention is applied to a wired pointing device according to an embodiment of the present invention, and FIG. 4 is a schematic diagram of a 2D and 3D wired pointing device shown in FIG. 3. In block diagram.

As shown in FIG. 3, the accelerometer module 11 for three-dimensional position information, the CPU 12 which calculates the duty ratio which arises at the time of a movement, and the position value computed by CPU are transmitted to a PC, There is one control switch 13 for setting the basic position in the space, and there are left and right switches 6 and 7 which serve as a general mouse.

As shown in FIG. 4, the accelerometer 11 includes an accelerometer 11a for detecting rotation of the x coordinate, an accelerometer 11b for detecting rotation of the y coordinate, and an accelerometer 11c for detecting rotation of the z coordinate. It is installed separately. At this time, the accelerometers 11a, 11b, and 11c can simply calculate the rotational direction by measuring the duty ratio and send it to the PC via the CPU 12.

5 is a diagram illustrating a configuration of a wireless pointing device according to another embodiment of the present invention, and FIG. 6 is a schematic block diagram of the two- and three-dimensional wireless pointing device shown in FIG. 5.

As shown in Fig. 5, the accelerometer module 11 for two- and three-dimensional position information, the CPU 12 for calculating the duty ratio generated during movement, and the position value calculated by the CPU are transmitted to the PC. In addition, there is one control switch 13 for setting a basic position in the space, and there are left and right switches 6 and 7 which serve as a general mouse. Furthermore, the radio pointing device is further provided with an RF module 15 and an antenna 14 for transmitting the data to the computer.

As shown in FIG. 6, the accelerometer 11 includes an accelerometer 11a for detecting rotation of the x coordinate, an accelerometer 11b for detecting rotation of the y coordinate, and an accelerometer 11c for detecting rotation of the z coordinate. It is installed separately.

At this time, the accelerometers 11a, 11b, and 11c can simply calculate the rotational direction by measuring the duty ratio and send it to the PC via the CPU 12. This data is then converted into a radio signal via the RF module 15, which is transmitted to the computer via the antenna 14.

7 is a schematic diagram of a wired pointing device using a support according to another embodiment of the present invention, in which a pointing device 16 and a support 17 are combined. In this case, the coupling acts as the left, right, up and down, and the rotation is free to rotate about the 2,3 axis. By rotating in this way, the duty ratio actually changes by rotation, and this change can be detected by an accelerometer and the rotation direction can be determined.

8 is a schematic diagram of a wireless pointing device using a support according to another embodiment of the present invention, in which a pointing device 16 and a support 17 are combined. In this case, the coupling acts as the left, right, up and down, and the rotation is free to rotate about the 2,3 axis. By rotating in this way, the duty ratio actually changes by rotation, and this change can be detected by an accelerometer and the rotation direction can be determined. In addition, the signal is transmitted from the antenna 14 in front of the mouse.

In the above embodiments, the wireless pointing device may be particularly useful as an apparatus that operates without limitations such as distance or space when working with a presentation.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

As described above, the device, which is a kind of pointing device of the present invention, does not need a fixed position due to the use of space and is conveniently used during movement, so that accurate control can be performed even in a narrow seat such as an airplane or a moving vehicle. Will be. In addition, in the example fixed to the support, there is no need for the movement of the arm, no need for the two-dimensional space to use the device, and also, the person in charge can directly operate the computer, etc. There will be.

Claims (5)

In a pointing device with one or more click buttons to deliver a command, Two- and three-dimensional rotation detection means for detecting rotation in space, A position information input device comprising a calculation means for calculating a rotation direction by measuring a change in the duty ratio of the rotation sensed by the three-dimensional rotation detection means; Technology that communicates without using a mouse controller. A radio signal converting means for converting data from said control means into a radio signal; And an antenna for transmitting the radio signal converted by the radio signal conversion means to a computer. The position information input device according to claim 1 or 2, wherein the position information input device is fixedly used to a predetermined height by a supporting means. The position information input device according to claim 1 or 2, further comprising reset means for setting a reference position in space and means for position control of the cursor. 4. The position information input device according to claim 3, further comprising reset means for setting a reference position in space and means for position control of the cursor.