Handheld pointing device and tilt angle correction method thereof
A technology of pointing device and tilt angle, which is applied in the field of pointing device and its correction, can solve the problems of increasing the manufacturing cost of the handheld pointing device, increasing the complexity of the handheld pointing device, increasing the energy consumption of the handheld pointing device, and reducing the design and production cost, simplified hardware architecture and computational complexity
Inactive Publication Date: 2018-04-10
PIXART IMAGING INC
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Problems solved by technology
However, using more than two reference points will not only increase the complexity of the position calculation of the handheld pointing device, but also the image sensor on the handheld pointing device must have a viewing angle capable of sensing more than two reference point positions.
The use of accelerometers and gyroscopes will not only increase the production cost of the handheld pointing device, but also increase the energy consumption of the handheld pointing device
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[0042] Hereinafter, the present invention will be described in detail by illustrating various exemplary embodiments of the invention in the drawings. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Furthermore, the same reference numbers may be used to denote similar elements in the drawings.
[0043] [Example of Handheld Pointing Device]
[0044] The handheld pointing device can be applied to pointing point positioning of an image display device (not shown). Please refer to figure 1 , figure 1 A schematic diagram showing the application of the handheld pointing device provided by the embodiment of the present invention in an interactive system. The interactive system includes a handheld pointing device 10 , a host 20 and an image display device 30 . The host 20 is used to read and execute software programs, such as game software, and can display the execution stat...
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The invention discloses a hand-held pointing device and a method for calibrating its inclination angle, and the method includes the following steps. Firstly, when the handheld pointing device points to a reference point, the image corresponding to the position of the reference point is captured, and a plurality of image frames are sequentially generated. Secondly, it is determined whether the reference point has moved substantially according to the plurality of image frames. Then, if it is judged that the reference point has not moved significantly, the acceleration unit of the handheld pointing device is used to sense multiple acceleration values of the handheld pointing device in multiple axes, so as to calculate and update the handheld pointing device according to the multiple acceleration values. The first tilt angle currently used by the pointing device is the second tilt angle. Thus, the hand-held pointing device can efficiently and accurately calculate the position of the reference point according to its tilt angle by executing the tilt angle correction method.
Description
technical field [0001] The present invention relates to a pointing device and its correction method, and in particular to a hand-held pointing device and its tilt angle correction method. Background technique [0002] The handheld pointing device can calculate the pointing point coordinates of the handheld pointing device by analyzing the position of the reference point in the sensed image area, and transmit the pointing point coordinates to the game console for related game operations. It is widely used in various interactive remote control games, such as light gun games, baseball games and tennis games. [0003] The distance between the image sensor on the existing hand-held pointing device and the display screen, as well as its rotation angle during image capture, will affect the calculation of the coordinates of the pointing point. Therefore, if the hand-held pointing device is not equipped with related equipment for detecting tilt angles, when the image sensor of the h...
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IPC IPC(8): G06F3/0346A63F13/211A63F13/219
Inventor 程瀚平黄昭荐梁家钧
Owner PIXART IMAGING INC