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Handheld pointing device

A pointing device, hand-held technology, applied in the field of hand-held pointing devices, can solve problems such as errors

Inactive Publication Date: 2014-01-01
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the host computer controls the object on the screen displayed by the display device according to the coordinate position calculated by the handheld pointing device at this time, an error will occur.

Method used

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Examples

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Embodiment Construction

[0021] The device 400 includes a main body 410 , an image sensing module 420 , an acceleration sensing module 430 and a processing circuit 440 . In this example, the image sensing module 420 , the acceleration sensing module 430 and the processing circuit 440 are all disposed in the main body 410 . The image sensing module 420 is used to capture an image including at least one image of a reference light source (such as a light-emitting infrared diode), and generate an optical sensing signal representing the reference light source in the captured image coordinate position.

[0022] The acceleration sensing module 430 is used to sense the acceleration value V X , acceleration value V Y with the acceleration value V Z , where the acceleration value V X , acceleration value V Y with the acceleration value V Z Respectively represent the acceleration values ​​of the main body 410 in three dimensions (represented by the three axes X, Y and Z) in space. In this example, the acc...

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Abstract

The invention discloses a handheld pointing device, which comprises a main body, an image sensing module, an acceleration sensing module and a processing circuit, wherein the image sensing module is arranged in the main body, and is used for capturing an image; the image comprises at least one reference light source, and is used for generating an optical sensing signal; the acceleration sensing module is also arranged in the main body, and is used for sensing the acceleration values of two dimensions; when the absolute value of the sum of the acceleration values of the two dimensions falls in a preset acceleration range, an acceleration sensing signal is generated; the processing circuit is used for receiving the optical sensing signal and the acceleration sensing signal and generating an output signal.

Description

technical field [0001] The present invention relates to the field of optical touch technology, and in particular to a hand-held pointing device. Background technique [0002] The handheld pointing device is generally used in conjunction with a host, a display device and two reference light sources. As far as the current technology is concerned, the handheld pointing device uses its built-in image sensing module to sense two reference light sources near the display surface of the display device, so as to capture images containing the two reference light sources. After obtaining the images containing the two reference light sources, the handheld pointing device will calculate the coordinate positions of the images of the two reference light sources in the captured image, and send the calculated coordinate positions to the host, so that the host can Objects on the screen displayed by the display device are controlled, for example, a cursor on the screen is controlled. [0003...

Claims

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Application Information

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IPC IPC(8): G06F3/0346G06F3/042
Inventor 程瀚平黄昭荐梁家钧
Owner PIXART IMAGING INC
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