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.
CN103729092AInactive Publication Date: 2014-04-16PIXART IMAGING INC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PIXART IMAGING INC
Publication Date
2014-04-16
Estimated Expiration
Not applicable · inactive patent

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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.
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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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