Handheld pointing device and control method thereof

A technology of pointing devices and control methods, applied in the direction of instruments, electrical digital data processing, input/output process of data processing, etc., can solve problems such as downward offset and upward offset, errors, etc.

Inactive Publication Date: 2014-04-16
PIXART IMAGING INC
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  • Abstract
  • Description
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Problems solved by technology

[0003] However, when the hand-held pointing device gradually approaches the display device or gradually moves away from the display device without changing the pointed direction, in the image captured by the image sensing module, the image of the reference light source will be affected by the above two The situation of downward shift and upward shift occurs respectively
In this way, the host will control the objects on the screen displayed by the display device according to the wrong coordinates, which will lead to the occurrence of errors

Method used

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  • Handheld pointing device and control method thereof
  • Handheld pointing device and control method thereof
  • Handheld pointing device and control method thereof

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Embodiment Construction

[0015] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation methods, methods, Steps, structure, features and effects are described in detail below.

[0016] figure 1 is a perspective view of a handheld pointing device according to one embodiment of the present invention. Please refer to figure 1 , the handheld pointing device 100 includes a main body 110 , an image sensing module 120 and a processing circuit 140 . In this embodiment, the image sensing module 120 and the processing circuit 140 are both disposed in the main body 110 , but it is not intended to limit the present invention. The image sensing module 120 is used for sensing a reference light source, so as to capture an image including the reference light source. As for the processing circuit 140, it is electrically connected to the image sensing module 120 to obtain an image including a reference light s...

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Abstract

The invention provides a handheld pointing device and a control method thereof. The handheld pointing device comprises a body, an image sensing module and a processing circuit, wherein the image sensing module is arranged in the body and is used for sensing a reference light source so as to capture an image containing the reference light source, and the processing circuit is arranged in the body and is electrically connected with the image sensing module so as to obtain the image containing the reference light source to further calculate the coordinates of the image of the reference light source relative to the image captured by the image sensing module and correct the coordinates according to the distance between the body and the reference light source or the distance variable quantity. The handheld pointing device and the control method thereof can avoid incorrect control of a host machine.

Description

technical field [0001] The present invention relates to the field of optical touch technology, in particular to a hand-held pointing device and a control method thereof. Background technique [0002] The handheld pointing device is used in conjunction with the host computer, display device and reference light source. As far as the current technology is concerned, the handheld pointing device uses its built-in image sensing module to sense a reference light source near the display surface of the display device, so as to capture an image containing the reference light source. After obtaining the image containing the reference light source, the hand-held pointing device calculates the coordinate position of the image of the reference light source in the captured image, and transmits the calculated coordinate position to the host, so that the host can control the display device accordingly An object on a displayed screen, such as a cursor on a control screen. [0003] However,...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/0346
Inventor 高铭璨梁家钧
Owner PIXART IMAGING INC
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