JPH0561602A - Twin ball mouses and data input system - Google Patents

Abstract

PURPOSE:To input three-dimensional data by a simple mouse operation by moving a cursor in the same direction as the moving direction of a mouse even when the mouse is obliquely moved. CONSTITUTION:A 1st ball 2 provided with sensors 4X, 4Y and a 2nd ball 12 provided with a sensor 14X are disposed on the bottom of the mouse 11. An operation part 5 calculates the inclination amount of the mouse 11 based upon a movement amount detected by the sensors 4X, 4Y. The movement amount of the mouse 11 is compensated in accordance with the calculated inclination amount and the cursor is moved in the same direction as the moving direction of the mouse 11. In addition, a main sensor M and a sub-sensor are arranged on the bottom of the mouse, and when the mouse 11 is moved, detection signals are outputted from both the main sensor M and sub-sensor. The detection signal from the sensor M is processed as X and Y coordinates, the rotational variable of the sub-sensor around the position of the sensor M is calculated and the value of the rotational variable is processed as a Z coordinate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin ball mouse having two moving balls and a data input system using such a mouse.

[0002]

2. Description of the Related Art In recent years, personal computers and CAD
An input device called a mouse is used for data input of the system. For example, when the mouse is placed on a desk and moved by an operator by hand, the mouse cursor on the display screen of the computer moves according to the movement amount of the mouse. That is, the mouse data input system controls the movement of the mouse cursor on the XY plane. An example of a mouse used in such a data input system is shown in FIG.

In FIG. 10, reference numeral 1 denotes a mouse, and a ball 2 for moving the mouse 1 is rotatably held on the main body of the mouse 1 with a part of the ball 2 protruding from the bottom surface. 3X, 3Y
Is a roller which abuts on the ball 2 and rotates in respective directions according to the rotation of the ball 2 in the horizontal direction and the vertical direction. These rollers 3X and 3Y are arranged at positions perpendicular to each other in the X direction and the Y direction. The rotation amounts of the rollers 3X and 3Y are detected by the sensors 4X and 4Y, respectively. Ie the ball
The amount of rotation of 2 in the X and Y directions, that is, the X of ball 2.
The amount of movement in the Y and Y directions is detected by the sensors 4X and 4Y.

A rotation amount (movement amount) detected by the sensors 4X and 4Y is calculated by a calculation unit 5 provided in the mouse 1 and converted into an electric signal, and a personal computer or a CAD system is supplied through an electric wire 6. Is output to. The electric signals in the X and Y directions output from mouse 1 are
In a personal computer or CAD system, for example, it is processed as an X coordinate value and a Y coordinate value in an XY coordinate system, and is used for movement control of a mouse cursor on a display screen.

[0005]

However, when the movement of the cursor displayed on the display screen is controlled by the electric signal output from the mouse 1 having the above configuration, the mouse is
The cursor moves in accordance with the movement of 1. To match the movement direction of mouse 1 with the movement direction of the cursor during this movement, tilt mouse 1 with respect to the XY coordinates of the display screen displaying the cursor. Needing to move without. The relationship between the tilt of the mouse 1 and the XY coordinates of the cursor when moving will be described below with reference to FIG.

Assuming that the coordinates of the mouse 1 when moving is Xm-Ym coordinates with respect to the XY coordinates of the display screen displaying the cursor, if the mouse 1 is not tilted, that is,
If the horizontal and vertical directions of the mouse 3 roller 3X and roller 3Y are the same as the X and Y directions of the display screen, the X axis of the display screen will move as indicated by the solid line. -The Y coordinate and the Xm-Ym coordinate of mouse 1 match, so the movement of the cursor has a similar relationship to the movement of mouse 1 and the movement direction of the cursor on the display screen and mouse 1
The directions of movement of are the same. Therefore, when the mouse 1 is moved in the P1-P2 direction while the cursor is at the position P1, the cursor moves in the same direction as the mouse 1 in the direction P1.
-Move in the P2 direction.

When the operator operates the mouse 1 by hand, it is difficult to move the mouse 1 without tilting it. Normally, the mouse 1 is tilted according to the angle of the wrist when the mouse 1 is grasped. I will end up. Therefore, the mouse 1 moves while being tilted with respect to the X-Y coordinates of the display screen. Ie mouse 1 roller 3X and roller 3Y
The horizontal and vertical directions of the display screen and the X and Y directions of the display screen are inclined. This state is displayed on the XY screen of the display screen, for example, as the Xm-Ym coordinates indicated by the alternate long and short dash line in FIG.
It is expressed in a state of being inclined by θ _n-1 with respect to the coordinates.

When the cursor is at the position P1 and the mouse 1 is moved in the direction P1-P2 while being inclined by θ _n-1 , the moving distance detected by the sensors 4X and 4Y of the mouse 1 is the mouse. 1 shows the moving distance in the Xm-Ym coordinate, so that if the moving distances detected by the sensors 4X and 4Y are xm and ym respectively, and the distance between P1 and P2 is D, then Xm and Ym are respectively xm = Dcosθm , Ym = Dsin θm. The values of xm and ym are X-
It is processed and output as the amount of movement of the cursor in the Y coordinate, and the cursor moves on the display screen according to the values of xm and ym. Note that θm represents the inclination of the line segment P1-P2 on the Xm-Ym coordinate.

On the other hand, P1 when mouse 1 is not tilted
From mouse to P2, ie sensor 4
The movement distances detected by X and 4Y are xo and yo, respectively.
Then xo <xm, yo> ym, so mouse
If you move 1 while tilted, the cursor will move to x in the X direction.
It moves to the position of P3 which has moved ym in the m and Y directions.

That is, when the mouse 1 is tilted, even though the mouse 1 is moved in the P1-P2 direction, the cursor moves in the P1-P3 direction different from this direction, and the moving direction of the mouse 1 is changed. And the moving direction of the cursor do not match.

As described above, the conventional mouse has a drawback in that when the mouse is moved in a tilted state, the moving direction of the mouse is different from the moving direction of the cursor, and the operability is significantly reduced.

Further, since the above-mentioned data input system using a mouse can input only two-dimensional data, for example, in the case of inputting three-dimensional data in a three-dimensional CAD system, a special operation is required. did not become. For example, when inputting the Z coordinate, either the X coordinate or the Y coordinate is switched to the Z coordinate by using a dedicated command, and the Z coordinate is input. Therefore, the input operation of three-dimensional data is complicated, and the operability of data input with a mouse is extremely poor.

The present invention has been made in view of the above circumstances. Even if the mouse for moving the cursor is tilted and moved, the cursor is moved in the same direction as the moving direction of the mouse to improve the operability. The purpose is to provide a ball mouse.

Another object of the present invention is to provide a data input system capable of improving the operability of inputting three-dimensional data by a mouse with a simple device.

[0015]

In order to achieve the above object, the present invention provides a mouse for moving a cursor on a display screen, which is arranged on the bottom surface of a main body and detects the amount of movement in the X direction. A second sensor that detects the amount of movement in the Y direction
A first ball provided with a sensor, and a second ball provided with a third sensor arranged at a predetermined distance from the first ball and detecting a movement amount in at least a direction orthogonal to the arrangement direction, It is characterized by comprising a computing unit for computing a tilt amount of the main body based on the movement amount detected by the first or second sensor and the movement amount detected by the third sensor.

The present invention also provides a data input system in which a detection signal corresponding to the amount of movement is output from the mouse by moving the mouse, and the output signal from this mouse is processed as cursor control and data input. The mouse having a main sensor and a sub sensor that respectively output the detection signals of the vertical direction component and the horizontal direction component according to the movement amount, and the detection signal from the main sensor output from the mouse is converted into XYZ coordinates. Control processing means for processing as the X coordinate and the Y coordinate in the above, and calculating the value of the Z coordinate based on the detection signals from the main sensor and the sub sensor.

Further, according to the present invention, the control processing means calculates the rotation change amount of the sub sensor centered on the main sensor based on the detection signals from the main sensor and the sub sensor output by the movement of the mouse, It is characterized in that the value of this rotation change amount is processed as the Z coordinate.

Further, the present invention is characterized in that the main sensor and the sub sensor of the mouse are provided at different positions on the bottom surface.

[0019]

Since the present invention is configured as described above, the moving amount and the third amount detected by the first or second sensor in the arithmetic unit are calculated.
By calculating the amount of tilt of the main body based on the amount of movement detected by the sensor of, the movement of the cursor is controlled by the amount of movement of the mouse corrected according to the calculated amount of tilt, tilting the mouse to move. However, the cursor can be moved in the same direction as the moving direction of the mouse.

Further, since the present invention is configured as described above, the detection signal from the main sensor is processed by the control processing means as the X coordinate and the Y coordinate in accordance with the movement of the mouse, and the detection signal from the main sensor and the sub sensor is detected. By calculating the value of the Z coordinate based on the signal, three-dimensional data can be input very easily, and the operability of data input can be significantly improved.

Further, according to the present invention, since the value of the rotation change amount of the sub sensor centering on the main sensor is processed as the Z coordinate, the Z coordinate value can be easily calculated and the three-dimensional data can be obtained. Can be input very easily and the operability of data input can be significantly improved.

Further, according to the present invention, since the mouse main sensor and sub-sensor are provided at different positions on the bottom surface as described above, three-dimensional data can be input with a simple structure.

[0023]

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

FIG. 1 is a diagram showing a schematic configuration of a twin-ball mouse according to an embodiment of the present invention, and FIG. 2 is a diagram showing a concept of mouse movement amount correction. The same parts as those in FIG. 10 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the figure, 11 is a twin-ball mouse (hereinafter simply referred to as a mouse). The body of the mouse 11 has a sensor 4 for detecting the amount of movement in the X direction and a sensor for detecting the amount of movement in the Y direction. A first ball 2 having 4Y is rotatably held in a state of partially protruding from the bottom surface.
Like the first ball 2, the second ball 12 is separated from the first ball 2 by a predetermined distance L and is rotatably held in a state of partially protruding from the bottom surface of the mouse 11 in the Y direction. It is arranged. The distance L between the first ball 2 and the second ball 12 is set to 40 mm.

Further, the first ball 2 and the second ball 12 are in contact with the second ball 12 in the direction orthogonal to the Y direction in which they are arranged, that is, in the X direction, and the second ball 12 rotates in the X direction. A roller 13X that rotates according to
The rotation amount of X is detected by the sensor 14X. That is, the amount of rotation of the second ball 12 in the X direction, that is, the amount of movement of the second ball 12 in the X direction is detected by the sensor 14X. The movement amount (rotation amount) detected by the sensor 14X is the first amount detected by the sensor 4X included in the first ball 2.
It is output to the calculation unit 5 for calculating the movement amount of the ball 2 and the inclination amount of the mouse 11 after the movement.

By the way, as shown in FIG. 2, the mouse 11 tilted by θ _{n-1 with} respect to the XY coordinates of the display screen is moved to P1.
When moving from the point P2 to the point P2, the mouse 11 changes to a state of being inclined by θ _{n with} respect to the XY coordinates on the display screen at the point P2 after the movement according to the angle of the wrist of the operator who is holding the mouse 11. Is the amount of inclination θ _n-1 before the movement and the amount of inclination θ after the movement
Each _n is stored in a memory (not shown) in the arithmetic unit 5. The amount of inclination θ _n after this movement is
It is calculated in the calculation unit 5 based on the movement amount output from 4x, and the tilt amount θ _n-1 before the movement is the same as that of the previous mouse 11
The tilt amount θ _n after the movement during the movement is registered as the tilt amount θ _n-1 before the current movement. The memory that stores the tilt amount of the mouse 11 is initialized by operating the initialization switch 15 before using the mouse 11.

Further, in order to move the cursor in the same direction as the moving direction of the mouse 11 even if the mouse 11 tilts and moves, the computing unit 5 stores the tilt amount θ before the movement of the mouse 11 stored in the memory. Correct the movement amount of the first ball 2 in the X and Y directions detected by the sensors 4X and 4Y according to _n-1 ,
Convert the corrected movement in the X and Y directions to an electrical signal and connect it to a personal computer or CAD system.
Output via 6. In a personal computer or CAD system, the X output from the calculation unit 5
The movement control of the mouse cursor on the display screen is performed based on the corrected movement amounts in the Y direction and the Y direction.

Next, correction of the movement amount in the X and Y directions and calculation of the tilt amount θ _n after movement when the mouse 11 is moved from the P1 point to the P2 point will be described.

In order to move the cursor in the same direction as the moving direction of the mouse 11 even if the mouse 11 tilts and moves, P
The coordinates (xo, yo) in the XY coordinates of 2 may be calculated, and xo and yo are calculated as follows. That is, xo = Dcos (θ _n-1 + θm) yo = D sin (θ _n-1 + θm) where D is the distance between P1 and P2, θ _n-1 is the amount of inclination before movement, and θ m is the mouse 11 Line segment P at Xm-Ym coordinates
The slopes of 1-P2 are shown respectively, θ _n−1 is known data as described later, and D and θm are Xm−.
The data is calculated from the coordinates (xm, ym) of P2 on the Ym coordinate as D = √ (xm ² + ym ² ) θm = tan ⁻¹ ym / xm.

Regarding the inclination amount θ _n after the mouse 11 is moved to P2, the second ball 12 rotates about the first ball 2 during the movement of the mouse 11 from P1 to P2 ( Alternatively, by rotating the first ball 2 about the second ball 12), the inclination amount θ _n-1 before the movement changes to the inclination amount θ _n after the movement. Is the difference ΔX between the movement amount xm detected by the sensor 4X of the first ball 2 and the movement amount x2 detected by the sensor 14X of the second ball 12.
Is calculated as Therefore, mouse 11 moves from P1 to P
During the movement to 2, the second ball 12 pivotally moves about the first ball 2 by ΔX, so that the rotational fluctuation amount ΔX is the first
3 shows a part of the circumference centered on the ball 2 and the amount of inclination θ _n after movement is calculated as θ _n = θ _n-1 + ΔX / L. Here, ΔX = | xm−x2 | is calculated, and L is a preset distance between the centers of the first ball 2 and the second ball 12. The tilt amount θ _n after the movement calculated in this way is treated as the tilt amount θ _n-1 before the movement when the mouse 11 is moved next time.

By calculating the tilt amount of the mouse 11 as described above, even if the mouse 11 is tilted and moved, the moving amount of the first ball 2 is corrected according to the tilt amount, and the cursor is moved by this corrected moving amount. Since the movement of the mouse is controlled, the cursor can be moved in the same direction as the moving direction of the mouse 11.

Next, an example in which a mouse having two balls as described above is applied to a data input system will be described with reference to the drawings.

FIG. 3 is a block diagram showing the configuration of the data input system. This system inputs an operation console 4 including a CPU control processing device 21, a display device 22, a storage device 23 and a keyboard, three-dimensional data and the like. It is equipped with a mouse 25. The CPU control processing device 21 performs control processing of this system, processes data input from the console 24 and the mouse 25, controls the mouse cursor displayed on the display device 22, and stores data in the storage device 23. Read and write etc.

The control processing program of the CPU control processing device 21 is a storage device (not shown) in the device 21 or a storage device.
Remembered in 23.

The mouse 25 applied to the present system shown in FIGS. 5 and 6 has two balls on the bottom surface thereof in the same manner as the mouse 11 described above, and abuts on each ball in the horizontal and vertical directions. It has a roller that rotates in each direction according to the rotation of the ball and a sensor that detects the amount of rotation of each roller, that is, the amount of movement of each ball. However, as shown in FIG. 6, the ball, the roller, and the sensor are , Are collectively simplified and shown as main sensor M and sub-sensor S. Main sensor M
The sub sensor S outputs a detection signal indicating the amount of movement according to the rotation of the ball, but the sensors M and S have the same structure and are provided at different positions. In the embodiment shown in FIG. 6, the main sensor M and the sub sensor S are the mouse 25.
The distance L between the main sensor M and the sub sensor S is 40 mm.

When the mouse 25 is moved in the same manner as an ordinary mouse, the main sensor M rotates in the lateral direction by the rotation of the ball.
The amount of movement of the directional component and the vertical Y-direction component is sent to the CPU control processing device 21 as a detection signal (digital electric signal) by the encoder.

The digital electric signal from the mouse 25 by the main sensor M is the value of the X coordinate and the Y coordinate of the mouse cursor 26 on the xy plane in the three-dimensional coordinate of the XYZ coordinate shown in FIG. It is processed.

Similarly, the amount of movement of the X-direction component in the horizontal direction and the Y-direction component in the vertical direction from the sub sensor S is detected by the encoder as a detection signal (digital electric signal) by the CPU.
Although it is sent to the control processing device 21, it is subjected to three-dimensional processing as described later, and the value of the Z coordinate is calculated based on the digital electric signals from the main sensor M and the sub sensor S. When the value of the Z coordinate is calculated, for example, the data Z1, Z
Entered or displayed as 2.

The mouse 25 is used to move the mouse cursor 26 to the X-
To move in the Y direction, the mouse 25 is moved laterally (arrow H) as shown in FIG. Vertical direction is Fig. 7 (B)
As shown in, the mouse 25 is moved in the vertical direction (arrow V).

To input Z coordinate data, refer to FIG. 7C.
As shown in, the mouse 25 is rotated about the position of the main sensor M in the directions of arrows T1 and T2.
The arrow T1 corresponds to the plus direction of the Z coordinate, and the arrow T2 indicates the Z direction.
Corresponds to the minus direction of the coordinates. When a three-dimensional coordinate display screen is displayed on the display device 22 by inputting Z coordinate data, the mouse cursor 26 moves to the Z direction as shown in FIG.
Move with 1, Z2. Further, in the CAD system, it is processed as the value of the Z coordinate.

That is, the rotational change amounts of the mouse 25 in the T1 and T2 directions are input to the CPU control processing device 21 as data of the X and Y direction components from the main sensor M and the sub sensor S, and the CPU control processing device 21. Then, the rotation change amount of the mouse 25 is calculated by three-dimensional processing as follows,
This rotation change amount is processed as the value of the Z coordinate.

First, as shown in the explanatory view of FIG.
Is moved or rotated so that the position of the main sensor M becomes Ma.
To Mb, and the position of the sub-sensor S moves from Sa to Sb.

Regarding the XY coordinates, the main sensor M
Is the coordinates (xma, yma) to the coordinates (xmb, ysb)
Further, the sub-sensor S changes from the coordinate (xsa, ysa) to the coordinate (xsb, ysb).

[0045] In FIG. 8, the rotation variation theta relative rotation of the mouse ^{25, θ = tn -1 2 (} ysb-ymb, xsb-xmb) -t
^{an -1 2 (ysa-yma,} xsa-xma) can be obtained as, as is clear from FIG. 8 and the above equation, the rotational variation amount θ rotation variation of the sub sensor S around the main sensor M Is shown.

That is, the rotation change amount of the mouse 25, which is processed as the value of the Z coordinate, can be obtained as the rotation change amount of the sub sensor S centering on the main sensor M.

As described above, in the CPU control processing device 21, the main sensor M calculates the values of the X-direction component and the Y-direction component from the data, or calculates the square root of the sum of the square of X and the square of Y. 1-dimensional processing to be performed and (movement distance calculation),
The two-dimensional processing for calculating the position of the mouse cursor 26 (see FIG. 4) on the XY coordinate plane from the X-direction component and the Y-direction component, and the XYZ coordinates by the data from the main sensor M and the sub-sensor S. It has a function of three-dimensional processing for calculating the value of the Z coordinate in.

To send each digital electric signal of the sub sensor S to the CPU control processing unit 21, the main sensor M uses a dedicated communication cable for each of the main sensor M and the sub sensor S, or uses the same communication cable. A digital electrical signal with different duty values may be used for the main sensor M and the sub-sensor S using a cable to distinguish the digital electrical signals of the men sensor M and the sub-sensor S.

Next, regarding the data input of the mouse 25, CP
The operation of the U control processing device 21 will be described with reference to the flowchart shown in FIG.

First, when there is a data input request from the mouse 25 in step S1, data is input from the mouse 25 in step S2. In step S3, it is determined whether or not the processing is one-dimensional processing, and if there is one-dimensional processing, the process proceeds to step S4.
The dimensioning process is performed. If it is determined in step S3 that the process is not one-dimensional processing, the process proceeds to step S5. In step S5, it is determined whether or not the processing is the two-dimensional processing. When the processing is the two-dimensional processing, the process proceeds to step S6 and the two-dimensional processing is performed.

When it is determined in step S5 that the processing is not the two-dimensional processing, the process proceeds to step S7. In step S7, three-dimensional processing is performed.

The processing results of steps S4, S6 and S7 are output in step S8 and processed as data in the X, Y and Z directions.

As described above, when the mouse 25 is rotated to input the three-dimensional data, the rotation change amount of the mouse 25 is calculated and processed as the data in the Z direction. Can be entered.

Although the first ball 2 and the second ball 12 are arranged in the Y direction in the above embodiment, the present invention is not limited to this, and the first ball 2 and the second ball 12 are arranged in the X direction. May be arranged in this case, in this case roller 13X and sensor 14X
By arranging in the Y direction, the same operational effect can be obtained. In short, the roller and the sensor may be arranged in the direction orthogonal to the direction in which the first and second balls are arranged.

In the above embodiment, a twin ball mouse is used.
Although the arithmetic unit 5 is provided in the unit 11, the present invention is not limited to this, and the arithmetic unit may be provided in a personal computer or a CAD system.
In the D system, the tilt amount of the twin ball mouse 11 may be calculated based on the movement amount output from the twin ball mouse 11.

Further, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0057]

As described in detail above, according to the present invention,
The movement amount detected by the first or second sensor and the third
By calculating the tilt amount of the main body based on the movement amount detected by the sensor, the movement amount of the mouse is controlled by the movement amount of the mouse corrected according to the inclination amount, and even if the mouse is tilted and moved. The cursor can be moved in the same direction as the mouse is moving.

Further, according to the present invention, since the rotation change amount is input as the three-dimensional data when the mouse is rotated, the input of the three-dimensional data becomes extremely easy and the data input operability is remarkably improved. Can be planned.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a twin-ball mouse according to an embodiment of the present invention.

FIG. 2 is a diagram showing a concept of mouse movement amount correction.

FIG. 3 is a block diagram showing a configuration of a data input system according to an embodiment of the present invention.

FIG. 4 is a conceptual diagram for explaining the embodiment.

FIG. 5 is a plan view of the mouse of the same embodiment.

FIG. 6 is a bottom view of the mouse of the example.

FIG. 7 is an explanatory diagram of a mouse operation of the embodiment, and FIG.
7A is a diagram showing movement in the X direction, FIG. 7B is a diagram showing movement in the Y direction, and FIG. 7C is a diagram showing movement in the Z direction.

FIG. 8 is a diagram showing a concept for explaining the operation of the embodiment.

FIG. 9 is a flowchart for explaining the operation of the embodiment.

FIG. 10 is a diagram showing a schematic configuration of a conventional twin-ball mouse.

FIG. 11 is a conceptual diagram showing a relationship between a tilt of a conventional twin-ball mouse and a cursor.

[Explanation of symbols]

 2 ... 1st ball 4X ... X-direction sensor (1st sensor) 4Y ... Y-direction sensor (2nd sensor) 5 ... Arithmetic unit 11 ... Twin-ball mouse 12 ... 2nd ball 14X ... X-direction sensor Sensor (third sensor) 21 ... CPU control processing device (control processing means) 25 ... Mouse M ... Main sensor S ... Sub sensor

Claims (4)

[Claims] 1. A mouse for moving a cursor on a display screen, comprising: a first sensor disposed on the bottom surface of the main body for detecting the amount of movement in the X direction and a second sensor for detecting the amount of movement in the Y direction.
A first ball having a sensor, and a second ball having a third sensor arranged at a predetermined distance from the first ball and detecting a movement amount at least in a direction orthogonal to the arrangement direction, A twin ball, comprising: a calculation unit that calculates the tilt amount of the main body based on the movement amount detected by the first or second sensor and the movement amount detected by the third sensor. mouse. 2. A data input system in which a detection signal corresponding to the amount of movement is output from the mouse by moving the mouse, and the output signal from the mouse is processed as cursor control and data input. A mouse having a main sensor and a sub-sensor that respectively output detection signals of the corresponding vertical component and horizontal component, and a detection signal from the main sensor output from the mouse, which is the X coordinate in the XYZ coordinate and A data input system comprising: a control processing unit that processes as a Y coordinate and calculates a Z coordinate value based on detection signals from a main sensor and a sub sensor. 3. The control processing means calculates the rotation change amount of the sub sensor centering on the main sensor based on the detection signals from the main sensor and the sub sensor output by the movement of the mouse, and the rotation change. The data input system according to claim 2, wherein the value of the quantity is processed as a Z coordinate. 4. The data input system according to claim 2, wherein the main sensor and the sub sensor of the mouse are provided at different positions on the bottom surface.