JPH04151715A - Optical mouth type input device - Google Patents

Abstract

PURPOSE:To obtain rotational information such as the rotational direction and amount or the like of a mouth by arranging four optical moving amount detectors on the back face of the mouth at the interval of 90 degrees on a circumference. CONSTITUTION:Four optical moving amount detectors (a)21a-(d)21d are arranged at the interval of 90 degrees on the circumference with a point 0 as a center, and the arrow indicated in the moving amount detectors 21 indicates the detecting direction of the moving amount. The moving vectorPHI of the central point is the average of the four points, so that PHI=[(a+c)/2, (b+d)/2] can be obtained, and when the radius of the circumference is defined as (r), an angle thetacan be searched by cos<-1>[(c-a)/2r]. Thus, the moving amount and the direction of the center of a circle can be searched from the detected moving amount, and this corresponds to the direction and moving amount on a conventional plane face. Therefore, each element of the moving vector is constant-fold as large as the sum[(a+c), (b+d)] of the detected values.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a position and direction input device for a computer, and more particularly to an optical mouse type input device.

[Conventional technology]

Conventionally, this type of optical mouse-type input device consists of a dedicated plate on which orthogonal grids are marked, and one optical movement detection device for each of the vertical and horizontal directions on the grid on the back of the mouse. has been done.

[Problem to be solved by the invention]

As mentioned above, the conventional optical mouse type input device has only two movement amount detection devices, so it can indicate all directions on the plane as the movement direction, but it can only obtain rotation information on the plane. The disadvantage is that it cannot be done.

[Means to solve the problem]

The optical mouse type input device of the present invention is an optical mouse type input device that performs input using a mouse, and has four optical movement amount detection devices on the back side of the mouse spaced at 90 degree intervals on the circumference. It is placed.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a top view of a system using an optical mouse type input device according to an embodiment of the present invention.

In FIG. 1, a system using the optical mouse type input device of this embodiment includes an input device consisting of an optical mouse dedicated plate 1 marked with orthogonal grids and a mouse 2, and a connecting cable between the mouse 2 and the mouse 2. It consists of a computer system chimney connected by 23.

On the back of the mouse 2, there is an optical movement detection device 21.
are arranged on the circumference.

FIG. 2 is a diagram schematically showing the arrangement of the movement amount detection device.

In FIG. 2, four movement amount detection devices (a) 21a-
The movement amount detection devices (d) 21d are arranged at intervals of 90 degrees on the circumference with the point O as the center, and the arrow shown inside the movement amount detection device 21 represents the detection direction of the movement amount. .

In this embodiment, among the movement amount detection devices, the movement amount detection device (
a) 21a, movement detection device (c) 2IC moves in the yMl direction of the grating of the optical mouse dedicated plate 1, movement detection device (b) 21b, movement detection device (d) 21d moves in the X-axis direction measure quantity.

Next, the operation will be explained below.

FIG. 3 is a diagram showing the relationship between mouse movements and detection results.

In FIG. 3, the movement vector Φ of the center point is the average of four points, so Φ=C(a+c)/2. (b+d)/2:],
The angle θ is cos−'C(c−
a)/2r).

From this, the amount of movement and direction of the center of the circle can be determined from the detected amount of movement, and this corresponds to the direction and amount of movement on a conventional plane. Each component of the movement vector becomes a constant partner of the sum of detected values [(a+c), (b+d)).

Also, from the moment of the angle detection device with respect to the center of the circle,
You can know the amount of rotation.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to obtain rotation information such as not only the movement direction and amount but also the rotation direction and amount of the mouse using the four optical movement amount detection devices.

In addition, by arranging optical movement amount detection devices at 90 degree intervals on the circumference and detecting the amount of movement in the tangential direction of the circumference, each component of the movement vector can be calculated as the sum of the detected values. This has the effect of preventing the conversion process from becoming complicated.

[Brief explanation of drawings]

Fig. 1 is a top view of a system using an optical mouse type input device according to an embodiment of the present invention, Fig. 2 is a diagram schematically showing the arrangement of a movement amount detection device, and Fig. 3 is a diagram showing the operation of the mouse. FIG. 1... Optical mouse dedicated plate, 2... Mouse,
3... Computer system, 21a-21d...
Optical movement amount detection devices (a) to (d), 22...button, 23... connection cable.

Claims (1)

[Scope of Claims] An optical mouse type input device that performs input using a mouse, wherein the optical movement amount detection device on the back surface of the mouse is arranged 90 degrees along the circumference.
An optical mouse-type input device characterized by arranging four pieces at intervals of 10 degrees.