KR20020093168A - Optical mouse - Google Patents

Abstract

PURPOSE: An optical mouse is provided to supply a mouse device capable of being used on a transparent surface, a reflection surface, and a bottom surface of a high repetitious pattern without a lattice pad and a space for a movement of the device. CONSTITUTION: In an optical mouse device connected to a host which moves a pointer on a monitor in accordance with a pointer mobile information, a floating reflection plate(2) of a square shape includes a rough bottom surface and a white upper surface. A main body(1) includes a plurality of click buttons and makes the floating reflection plate(2) not be separated. An elastic member(T) is positioned between the main body(1) and the floating reflection plate(2). When the main body(1) is not moved, the elastic member(T) guides the main body(1) to a basic sensing signal position. A photo sensor unit scans a light in the first and second holes and generates the first and second sensing signals according to light-interception amounts of the first and second reflected lights being output on the white surface of the reflection plate(2). A mobile information-generating unit generates mobile information of the first and second directions according to the first and second sensing signals of the photo sensor unit. A transmitting unit supplies the pointer mobile information and key input information to the host.

Description

Optical Mouse {Optical Mouse}

The present invention relates to an input device such as a personal computer, and more particularly to a mouse device.

Mouse devices are generally classified into mechanical, optical, photomechanical, and the like. In the case of the mechanical mouse device, the movement of the ball located at the lower side is detected and the pointer is moved correspondingly. The optical mouse device detects the movement of the optical mouse device by detecting the change of the grid pattern by a photo sensor located at the bottom of the optical mouse device as the optical mouse device moves on the pad of the grid pattern. Will move. The photomechanical mouse device detects the movement of a wheel having a slit by the photosensor and detects the movement of the photomechanical mouse device and moves the pointer accordingly.

As described above, the conventional optical mouse device uses a method in which a user moves the mouse device on a lattice pad, and the optical mouse device detects movement by the user and moves the pointer accordingly. Accordingly, in order to move the pointer using a conventional mouse device, a grid pad is required. In addition, some of the above mouse devices can be used without pads, but because of the scanning method, they do not work on reflective surfaces such as glass, mirrors, and polished surfaces where there is no visible information. There is a problem that causes malfunction at the bottom of this very high pattern.

On the other hand, in order to move the pointer, the optical mouse device needs a space where the mouse device can move.

As described above, the conventional optical mouse device requires a grid pattern pad, and some of the above mouse devices can be used without a pad. However, since the scanning method uses a surface without visible information (for example, glass) It does not work on reflective surfaces such as mirrors, glossy surfaces, etc., and also causes malfunctions on the bottom surface of highly repeatable patterns, and there is a problem that the space for the mouse device must be moved to move the pointer. .

Therefore, the object of the present invention does not require a pad of lattice pattern, and can also be used on surfaces without visible information such as glass, reflective surfaces such as mirrors and polished surfaces, and bottom surfaces of highly repeatable patterns. It is to provide a mouse device that does not require a space for the mouse device to move.

1 is a cross-sectional view of an optical mouse device according to a preferred embodiment of the present invention.

2 is a plan view of FIG.

Figure 3 is a bottom view showing the position of the hole in the body portion in the state in which the flow reflector is removed.

4 is a perspective view of a flow reflector according to the present invention.

Figure 5 is a bottom view of the optical mouse device attached to the flow reflector according to the present invention.

6 to 8 are views showing the change in the amount of received light according to the change of the flow reflector.

9 is a cross-sectional view of a fixed mouse device according to the present invention.

10 is a block diagram of an optical mouse device according to a preferred embodiment of the present invention.

FIG. 11 is an operation waveform diagram of the first sensitivity adjustment circuit of FIG. 10.

12 is a schematic block diagram of a host to which an optical mouse device according to a preferred embodiment of the present invention can be mounted.

13 is a flow chart of the central processing unit of FIG.

<Description of the code about the main part>

DESCRIPTION OF SYMBOLS 1: Mouse body part 2: Flow reflecting plate

2a: support reflector flow reflector L1; Scanning light

L2: reflected light H1, H2: hole

T: elastic member

According to the present invention for achieving the above object, the rear surface is rough and the upper surface is white, and has a frictional force with the bottom surface independently of the main body portion 1 of the mouse device, and has a square flow reflector plate which is movable according to the movement of the main body portion ( 2) and an elastic member installed between the main body 1 and the flow reflector to return the flow reflector to the reference sensing signal position when the body stops moving, and a plurality of click buttons. A mouse main body 1 formed so that the body can move, grooves in which first and second holes H1 and H2 in the first and second directions are formed in the bottom of the main body, and the first and second A photo sensor unit which scans light into the hole and generates first and second sensing signals according to the received amount of the first and second reflected light reflected on the white-treated surface of the flow reflector; According to the second sensing signal And a transmitter for generating pointer movement information for generating pointer movement information in the first and second directions, and a transmitter for providing input information of the pointer movement information and the click button to the host.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the annexed drawings, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 and 2 showing a side view and a plan view of an optical mouse device according to a preferred embodiment of the present invention, the mouse device is composed of a main body portion 1 and a flow reflecting plate 2 of the bottom surface.

The main body 1 is provided with a plurality of click buttons to enable a user's command input, and is formed in a form that the user can comfortably take.

The flow reflecting plate 2 has a frictional force with the bottom surface independently of the mouse body portion, and is flexible to move in response to the movement of the mouse body portion over a predetermined distance (gap distance between the mouse body portion and the flow reflecting plate). The upper surface is whitened. Since the flow reflector has a frictional force with the bottom surface independently of the mouse main body, the body does not move until the mouse main body moves and pushes the flow reflector, but the movement of the main body moves out of the play distance between the main body and the flow reflector. Push the flow reflector to move it. In addition, as shown in Figure 4 and 5, the flow reflector is made of a square. If it is not made of a square, even if the main body moves only in one direction, it affects the amount of light received by the other photosensor.

In addition, the elastic member (T) is provided between the body portion and the flow reflector to maintain the clearance distance when the body portion stops moving. The elastic member is deformed when the mouse main body moves and recovers its original shape when it stops, thereby allowing the flow reflector to return to the reference sensing signal position. That is, when the flow reflector 2 has no movement of the mouse body 1, the flow reflector 2 is always restored to the reference sensing signal position. The length of the elastic member (T) in the deformed state is equal to the play.

The first hole H1 in the horizontal direction and the second hole H2 in the vertical direction are formed on the bottom of the main body.

First and second photosensors are positioned above the first and second holes. The first and second photosensors scan light into the first and second holes, respectively. The light is scanned through the first and second holes and reflected on the white surface of the upper part of the flow reflector. The light reflected by the white surface is received by the first and second photosensors, and the first and second photosensors generate a sensing signal according to the received amount of light.

However, the flow reflecting plate has a frictional force with the bottom surface independently of the main body portion in which the photosensor, the first and second holes, and the photosensor are located, and moves away in the same direction as the main body portion outside the predetermined clearance distance. The amount of light received by the photosensor changes.

The change in the amount of received light according to the change will be described with reference to FIGS. 6 to 8 which show the change in the amount of received light according to the movement of the first and second holes H1 and H2 and the flow reflecting plate 2.

First, the positional relationship between the hole and the flow reflector shown in FIG. 6 is a case in which the user does not apply any external force to the mouse main body, and the light scanned by the photosensor (hereinafter referred to as “scanning light”) is defined by the white surface of the flow reflector. The reflected light (hereinafter referred to as “reflected light”) changes according to the position of the flow reflecting plate.

The positional relationship between the hole and the flow reflector shown in FIG. 8 may be a case where the user pushes the upper part in the -Y direction or the -X direction. In this state, the scanning light L1 of the photosensor can receive only the light that is reflected by the white-treated surface of the flow reflecting plate.

The positional relationship between the hole and the flow reflector shown in FIG. 7 may be the first and second holes when the user pushes the main body part in the + Y direction or the + X direction. In this state, the scanning light of the photosensor is scanned by the hole on the white surface of the flow reflecting plate. The scanning light scanned on the white surface is reflected, and the reflected light is again outputted by the hole, more than the output reflected light in FIG. The output reflected light is received by the photosensor.

According to the three cases, the light receiving amount of the photosensor corresponds to the position of the flow reflector.

As shown in Table 1, the change in the light receiving amount of the first and second photosensors according to the direction in which the user grips and pushes the upper part and the direction of the pointer movement on the monitor of the host according to the change in the light receiving amount of the first and second photosensors are shown in Table 1 below. to be.

Pushing the main body Light reception amount of the first photosensor Light reception amount of the 2nd photo sensor Pointer movement direction 0 0 Reference light intensity Reference light intensity Not moving 0 -Y Reference light intensity Decrease than standard light reception Move in the -Y direction 0 + Y Reference light intensity Increased than standard received amount Go in the + Y direction -X 0 Decrease than standard light reception Reference light intensity Move in the -X direction + X 0 Increased than standard received amount Reference light intensity Move in the + X direction -X -Y Decrease than standard light reception Decrease than standard light reception Move in the -X, -Y direction -X + Y Decrease than standard light reception Increased than standard received amount Move in the -X and + Y directions + X -Y Increased than standard received amount Decrease than standard light reception Move in the + X, -Y direction + X + Y Increased than standard received amount Increased than standard received amount Move in the + X and + Y directions

As described above, the light receiving amount of the first and second photosensors changes according to the direction in which the user grips the main body of the mouse device, and the movement and direction of the pointer on the monitor are determined according to the change of the light receiving amount.

Referring to FIG. 10, which shows a block diagram of a mouse device according to a preferred embodiment of the present invention as described above, the first photosensor unit 10 scans light in a first hole and reflects light reflected from the first hole. Is received to generate a first sensing signal according to the amount of light received (hereinafter referred to as the first light received amount). The first sensing signal corresponds to the first light receiving amount. The second photosensor unit 11 scans the light into the second hole and receives the reflected light reflected from the second hole to generate a second sensing signal according to the amount of light received (hereinafter referred to as the second light received amount). The second sensing signal corresponds to the second light receiving amount.

The first and second sensing signals are input to the first and second amplifiers 14 and 16, respectively. The first and second amplifiers amplify the first and second sensing signals and provide them to the first and second sensitivity adjustment circuits 18 and 20, respectively.

The first and second sensitivity adjustment circuits 18 and 20 generate first and second pointer movement signals indicating not only movement directions of the pointers but also movement speeds according to the first and second sensing signals.

Hereinafter, the first sensitivity adjustment circuit 18 will be described in more detail. The first sensitivity adjustment circuit is provided with a first sensing signal that is larger than the reference sensing signal according to the reference light receiving amount when the user moves the main body in the + X direction, and smaller than the reference sensing signal when the user moves the main body in the -X direction. The first sensitivity adjustment circuit searches for and outputs a magnitude of a first pointer movement signal which is preset according to the magnitude of the first sensing signal.

Referring to FIG. 11, which shows an operating waveform diagram of the first sensitivity adjustment circuit 18, when the magnitude of the first sensing signal belongs to a stable section having a predetermined section centered on the reference sensing signal. The first pointer movement signal is output as zero current. The first pointer movement signal of the zero potential indicates that there is no movement of the pointer.

The first sensitivity adjustment circuit 18 outputs the first pointer movement signal at a positive potential when the magnitude of the first sensing signal belongs to the + X direction moving section larger than the stable section, and the first pointer. A positive potential shift signal indicates that the pointer moves in the + X direction. In addition, the first sensitivity adjustment circuit generates a first pointer movement signal having a high potential as the magnitude of the first sensing signal becomes a maximum sensing signal. The potential of the first pointer movement signal indicates the moving speed of the pointer. The higher the potential relative to the zero potential, the faster the pointer moves.

The first sensitivity adjustment circuit 18 outputs the first pointer movement signal at a negative potential when the magnitude of the sensing signal belongs to the -X movement interval smaller than the stable interval, and the pointer movement signal is negative potential. Indicates that the pointer moves in the -X direction. In addition, the first sensitivity adjustment circuit generates a second pointer movement signal having a lower potential as the magnitude of the first sensing signal becomes a minimum sensing signal. The potential of the first pointer movement speed indicates the movement speed of the pointer. The lower the potential relative to the zero potential, the faster the pointer moves.

On the other hand, the first and second sensitivity adjustment circuits 18 and 20 ignore the change in the reverse direction in the movement signal of the pointer until the reference sensing signal position is reached. The above step is for preventing movement of the pointer in the reverse direction when the flow reflecting plate recovers to the reference sensing position by the elastic member T when the movement of the flow reflecting plate 2 is stopped. In detail, when the movement of the mouse body portion is made in the + X direction, the flow support plate is directed in the -X direction opposite to the hole of the body portion. When the movement of the main body is stopped, the flow support plate is moved to the position of the reference sensing signal by the elastic member T. The direction is the same as the movement trajectory of the main body, and the amount of light received by the photosensor increases in this process. Or the pointer moves as it decreases. That is, even though there is no movement of the mouse, the pointer is moved. In order to eliminate the above problem, it is necessary to ignore the change in the reverse direction until the flow reflector returns to the reference sensing signal position.

In the same manner as described above, the first sensitivity adjusting circuit 18 and the second sensitivity adjusting circuit 20 generate a first pointer movement signal and a second pointer movement signal from the first sensing signal and the second sensing time. The first pointer movement signal indicates a movement and speed of the pointer in the + Y and -Y directions, and the second pointer movement signal indicates a movement and speed of the pointer in the + X and -X directions.

The first pointer movement signal and the second pointer movement signal are input to the first and second analog to digital (AD) converters 22 and 24, respectively. The first and second AD converters convert the first and second pointer movement signals into AD and output the first and second pointer movement information, respectively. The first and second movement information are transmitted to the host through the transmitter 28. Is entered.

The key input unit 26 inputs key input information to the host through the transmitter in response to a user's click input using a plurality of click buttons provided in the main body.

The transmitter 28 provides the host with the first and second pointer movement information and key input information.

Referring to FIG. 12, which shows a schematic block diagram of a host to which the mouse device can be mounted, the input / output interface 30 includes information input from the mouse device, that is, first and second pointer movement information and key input information. Receives and provides to the central processing unit (32). The CPU 32 processes information input from the mouse device in accordance with a mouse device driver. The memory 34 stores a program executed by a mouse device driver and various kinds of information. The display controller 36 controls the monitor to display a pointer on the monitor 38 under the control of the central processing unit.

Referring to FIG. 13, which shows a flowchart of a pointer movement method in the mouse device driver applicable to the host, the CPU 32 performs the step 40 of initializing the mouse device driver. In this step, the CPU controls the display controller 36 to display the pointer at the initial position of the monitor when the mouse device driver is initialized. The display controller displays the pointer at an initial position of the monitor under the control of the CPU.

After the display, the central processing unit 32 searches whether the first and second pointer movement information is received through the input / output interface 30. At this time, the CPU moves the pointer according to the first and second pointer movement information. In this case, the movement of the pointer corresponds to the vector sum of the first and second pointer movement information.

As described above, in the present invention, when the user grabs and pushes the main body of the mouse device, the pointer on the monitor moves according to the movement of the floating reflector located at the lower end of the mouse device.

Meanwhile, as shown in FIG. 9, when the flow reflecting plate is positioned lower than the mouse main body portion and the bottom surface of the main body portion is not enlarged, the mouse pointer can be moved in a fixed state.

As described above, the present invention provides a surface on which the optical mouse device is placed has no visible information (such as glass) or a reflective surface (such as a mirror or gloss surface), or a surface having a highly repeatable pattern. It can be used in, and also has the advantage that can be used without the need for a separate grid pad.

In addition, as shown in FIG. 9, when the bottom surface of the flow reflector is lower than the main body portion and the bottom surface is extended such that the main body portion does not fall, the user can freely move the pointer on the monitor when only the space for the mouse device is secured. You can. That is, since there is no need for a space to move the mouse device, there is an advantage that the use environment of the mouse device can be improved.

Claims (6)

An optical mouse device connected to a host for moving a pointer on a monitor in accordance with pointer movement information, A square flow reflecting plate 2 having a rough back surface and a white surface, A main body portion 1 is provided with a plurality of click buttons, and configured to prevent the flow reflecting plate from being separated; An elastic member T positioned between the main body 1 and the flow reflecting plate 2 to guide the flow reflecting plate to a reference sensing signal position when there is no movement of the main body; A photo sensor unit scanning light into the first and second holes and generating first and second sensing signals according to light reception amounts of the first and second reflected light reflected on the white-processed surface of the flow reflecting plate; A pointer movement information generator for generating pointer movement information in the first and second directions according to the first and second sensing signals of the photosensor; And a transmitter for providing the pointer movement information and the key input information to the host. The method of claim 1, The upper surface of the flow reflecting plate 1, which is white-processed, is located at the bottom of the first and second holes H1 and H2 which are formed perpendicular to each other at the lower end of the main body and the upper end of the flow reflecting plate. It has a frictional force with the bottom surface, it is composed of a square so as not to affect the movement in the other direction even when the flow reflecting plate is moved in only one direction, the flow reflecting plate 2 is always in the absence of the movement of the body portion (1) And an elastic member (T) disposed between the body portion and the flow reflecting plate to return to the reference sensing signal position. The method of claim 1, When the movement of the main body is stopped, the increase or decrease of the amount of light as the flow reflector moves by the elastic member T, and the change in the reverse direction to prevent the movement of the pointer according to the zero potential until the reference sensing signal position is reached An optical mouse device comprising a sensitivity adjustment unit including a process of outputting. In the positional relationship between the holes H1 and H2 formed in the main body of claim 1 and the flow reflecting plate 2, The first and second reflected light amounts are the first and second reference amounts when the position of the flow reflecting plate is at the reference sensing signal position by the elastic member T, And a reflection light amount is changed according to the increase or decrease of the light amount according to the positional relationship between the flow reflecting plate and the hole formed in the main body, and the pointer is moved correspondingly. In the pointer movement information generator of claim 1, And a first and second pointer movement signal indicating that the movement speed is increased as the first and second sensing signals become larger or smaller than the stable section. In the above-mentioned flow reflector, The bottom surface of the flow reflecting plate is located below the main body portion, and the optical reflection type mouse device having a flow reflecting plate (2a) is formed so that the bottom surface is wide to prevent the fall of the main body portion to be used in a fixed state.