CN102591528A - Optical indicating device and click operation achieving method thereof - Google Patents

Abstract

An optical pointing device, comprising a control unit, a threshold is set in the control unit, the optical pointing device also includes a sensing unit and a timing unit, the sensing unit senses whether a finger is pressed on it, The timing unit counts the duration of the finger pressing on the sensing unit, the control unit compares the threshold with the time counted by the timing unit, and outputs when the time counted by the timing unit is greater than the threshold A first click signal, outputting a second click signal when the time counted by the timing unit is less than the threshold; the present invention also includes a method for realizing the click operation of the optical pointing device.

Description

Optical pointing device and method for realizing click operation thereof

technical field

The invention relates to an optical pointing device, in particular to a clickable optical pointing device and a method for realizing the pointing operation.

Background technique

The optical pointing device uses the light-emitting elements in it to emit infrared light. When the finger moves on the optical pointing device, the infrared light shines on the finger, and the formed image is imaged by the optical lens, and the characteristic value of the image is analyzed at different times. The difference value of the point is used to judge the direction and distance of the finger movement, so as to realize the function of the mouse to realize the movement of the cursor.

But the general optical pointing device can't realize the function of the left and right buttons of the mouse. To realize this function, a button needs to be arranged around the optical pointing device, and the user uses the button to realize the function of pressing. It cannot be integrated on portable electronic devices (such as mobile phones, music players, etc.), or although it can be integrated on such devices, due to the complex structure, it is not conducive to further reducing the size of such devices.

Contents of the invention

In view of the above, it is necessary to provide an optical pointing device and method that are small in size and can facilitate click operations.

An optical pointing device, comprising a control unit, a threshold is set in the control unit, the optical pointing device also includes a sensing unit and a timing unit, the sensing unit senses whether a finger is pressed on it, The timing unit counts the duration of the finger pressing on the sensing unit, the control unit compares the threshold with the time counted by the timing unit, and outputs when the time counted by the timing unit is greater than the threshold A first click signal, outputting a second click signal when the time counted by the timing unit is less than the threshold.

A method for realizing click operation of an optical pointing device, comprising the following steps:

a control unit of an optical indicating device sets a threshold;

A sensing unit of the optical indicating device senses whether a finger is pressed on it; if a finger is pressed on it, a timing unit of the optical indicating device counts the duration of finger pressing; and

The control unit compares the time counted by the timing unit with the threshold, if the time counted by the timing unit is greater than the threshold, output a first click signal; if the time counted by the timing unit is less than the threshold threshold, and output a second click signal.

Compared with the prior art, the optical pointing device of the present invention and its click operation implementation method realize different click operations by sensing different durations of finger pressing by the sensing unit, so that the optical pointing device is smaller in size and easy to use. convenient.

Description of drawings

Fig. 1 is a block diagram of an embodiment of the optical pointing device of the present invention.

Fig. 2 is a flow chart of an embodiment of a method for realizing a click operation of the optical pointing device of the present invention.

Description of main component symbols

Optical indicating device 10 control unit 11 Image processing unit 12 Image acquisition unit 13 luminous element 14 Sensing unit 15 timing unit 16

Detailed ways

Please refer to Fig. 1, a preferred embodiment of the method for realizing the click operation of the optical pointing device of the present invention is applied in an optical pointing device 10, which includes a control unit 11, an image processing unit 12, and an image acquisition unit 13 . A light emitting element 14 , a sensing unit 15 and a timing unit 16 .

The control unit 11 is connected to the light emitting element 14 to control the light emitting element 14 to emit infrared light for illuminating the user's finger.

The control unit 11 is connected to the image processing unit 12, and the image processing unit 12 is connected to the image acquisition unit 13, and the image acquisition unit 13 is used to acquire an image of infrared radiation on the finger, and the image processing unit 12 processes the image. The feature value of the image is obtained by digital processing, and the feature value is sent to the control unit 11, and the control unit 11 judges the direction and distance of the finger movement according to the received feature value, so as to control the cursor to move accordingly.

The control unit 11 is connected to the timing unit 16, and the sensing unit 15 is connected to the timing unit 16. The sensing unit 15 can be a variety of common capacitive or inductive touch screens. When the finger is pressed on the sensing unit 15 , the sensing unit 15 is triggered and sends a signal to the timing unit 16, and the timing unit 16 starts timing. When the finger leaves the sensing unit 15 and is not pressing, the sensing unit 15 no longer sends a signal to the timing unit 16, and the timing unit 16 The timing is stopped, and the counted time is sent to the control unit 11, and the timing unit 16 is cleared at the same time. This control unit 11 is provided with a threshold value, when the timing of the timing unit 16 is greater than the threshold value, the control unit 11 outputs a first click signal, such as the signal when the left button of the mouse is pressed, when the timing of the timing unit 16 When the value is less than the threshold, the control unit 11 outputs a second click signal, such as a signal when the right button of the mouse is pressed.

Please refer to FIG. 2, which is a flow chart of the click operation of the optical pointing device 10, and the specific steps are as follows:

In step S201, the sensing unit 15 senses whether there is a finger pressing on it, if there is a finger pressing, go to step S202, if not, the sensing unit 15 continues to sense whether there is a finger pressing on it.

In step S202, the timing unit 16 starts timing, and then goes to step S203.

In step S203, the sensing unit 15 senses whether the finger continues to press on the top, if not, proceed to step S204, if the finger continues to press on the top, the sensing unit 15 continues to sense.

In step S204, the timing unit 16 stops timing, and then goes to step S205.

Step S205, the timing unit 16 transmits its timing to the control unit 11, and the timing unit 16 is cleared at the same time, and then goes to step S206.

In step S206, the control unit 11 compares the timing of the timing unit 16 with a threshold set therein. Is the timing of the timing unit 16 greater than the threshold? If it is greater than the threshold, go to step S207; if it is smaller than the threshold, go to step S208.

In step S207, the control unit 11 outputs a first click signal.

In step S208, the control unit 11 outputs a second click signal.

Claims (9)

1. optical indicating device; Comprise a control module; It is characterized in that: be provided with a threshold value in the said control module, said optical indicating device also comprises a sensing cell and a timing unit, and whether said sensing cell sensing has finger presses on it; The said duration of timing unit timing finger presses on said sensing cell; Time of more said threshold value of said control module and said timing unit timing, and export one first click signal during greater than said threshold value, export one second click signal during less than said threshold value in time of said timing unit timing in time of said timing unit timing.

2. optical indicating device as claimed in claim 1 is characterized in that: said optical indicating device comprises that also one is connected to the light-emitting component of said control module, and said control module is controlled said light-emitting component and sent the infrared light that is used for shining on the finger.

3. optical indicating device as claimed in claim 2 is characterized in that: said optical indicating device also comprises an image acquisition unit, and said image acquisition unit obtains the image of infrared radiation on finger.

4. optical indicating device as claimed in claim 3; It is characterized in that: said optical indicating device also comprises a graphics processing unit; Said graphics processing unit is connected to said image acquisition unit; Said graphics processing unit is handled the image that said image acquisition unit obtains and is obtained said image characteristic values, and sends said eigenwert to said control module.

5. optical indicating device as claimed in claim 1 is characterized in that: the signal the when left button that said first click signal is a mouse is pressed, the signal the when right button that said second click signal is a mouse is pressed.

6. optical indicating device clicking operation implementation method may further comprise the steps:

One control module of one optical indicating device is provided with a threshold value;

Whether one sensing cell sensing of said optical indicating device has finger presses on it; If finger presses is arranged on it, the duration of a timing unit timing finger presses of said optical indicating device; And

Said control module compares the time and the said threshold value of said timing unit timing, if the time of said timing unit timing greater than said threshold value, is exported one first click signal; If the time of said timing unit timing is exported one second click signal less than said threshold value.

7. optical indicating device clicking operation implementation method as claimed in claim 6; It is characterized in that: after said sensing cell sensing has finger presses on it; Whether said sensing cell sensing finger continues to push in the above, if continue to push in the above, said timing unit continues timing; If do not continue to push in the above, said timing unit stops timing.

8. optical indicating device clicking operation implementation method as claimed in claim 7 is characterized in that: after said timing unit stopped timing, said timing unit sent the time of timing to said control module, and said timing unit zero clearing.

9. optical indicating device clicking operation implementation method as claimed in claim 6 is characterized in that: the signal the when left button that said first click signal is a mouse is pressed, the signal the when right button that said second click signal is a mouse is pressed.

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