Sensing system and method for obtaining position of referent thereof
A technology for sensing systems and indicators, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as the inability to calculate the position of indicators 102, inconvenience, and lack of suitable structures for general products
Inactive Publication Date: 2014-08-06
PIXART IMAGING INC
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Problems solved by technology
In this case, the sensing system 100 cannot calculate the position of the pointer 102
[0008] It can be seen that the above-mentioned existing sensing system obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.
In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem
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[0045] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the sensing system proposed according to the present invention and the method for obtaining the position of the indicator are implemented in detail below in conjunction with the accompanying drawings and preferred embodiments. Mode, structure, feature and effect thereof are as follows in detail.
[0046] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of the specific implementation mode, when the technical means and functions adopted by the present invention to achieve the predetermined purpose can be obtained a deeper and more specific understanding, but the accompanying drawings are only for reference and description, and are not used to explain th...
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The invention relates to a sensing system and the method for obtaining the position of a referent. The sensing system comprises a sensing region, a reflecting mirror, an image sensing device and a processing circuit, wherein the reflecting mirror is used for generating a mirror image of the referent when the referent approaches the sensing region; the image sensing device is used for sensing the referent and the mirror image of the referent when the referent approaches the sensing region; the processing circuit is used for calculating the coordinate values of the referent according to the image sensed by the image sensing device and the scheduled size of the referent when the referent approaches the sensing region; the referent forms a fictitious orthographic projection in the sensing region; the fictitious orthographic projection is taken as a round projection by the processing circuit; and the radius of the round projection is the scheduled size.
Description
technical field [0001] The invention relates to a technology in the field of touch control, in particular to a sensing system and a method for obtaining the position of an indicator. Background technique [0002] see figure 1 Shown is a perspective view of a known sensing system (sensing system). The sensing system 100 is used for sensing the position of a pointer 102 . The sensing system 100 includes an image sensing device 110 and a processing circuit 112 in addition to the mirror 104 and the reflective elements 106 and 108 . The mirror 104 , the reflective elements 106 and 108 , and the image sensing device 110 are all disposed on the same plane 114 , such as a whiteboard. In addition, the rectangular area indicated by the mark 116 is used as the sensing area of the sensing system 100 . [0003] Both the above-mentioned reflective elements 106 and 108 can reflect light to the sensing area 116 , and the mirror 104 can generate a mirror image of the sensing area 116 ....
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IPC IPC(8): G06F3/042
Inventor 陈信嘉苏宗敏吕志宏林卓毅
Owner PIXART IMAGING INC