Variable-size sensing system and method for redefining size of sensing region thereof

Abstract

The invention relates to a variable-size sensing system and a method for redefining the size of a sensing region thereof. The sensing system comprises four elements which are connected with each other to form a framework, a mark and two image sensing devices, wherein the lengths of two of the elements are variable to adjust the size of the framework; and the inner edge of the framework is used for defining a parallelogram sensing region. The sensing system has a first using state and a second using state, and the sensing region presents a first size and a second size correspondingly to the first using state and the second using state respectively, wherein the first size is decided internally, the second size is greater than the first size, and the mark is used for marking a fixed length. When the sensing system turns to the second using state from the first using state, the mark sensed by the two image sensing devices can be used for redefining the size of the sensing region.

Description

technical field [0001] The invention relates to the field of object position sensing, in particular to a variable-size sensing system and a method for redefining the size of a sensing area. Background technique [0002] see figure 1 As shown, it shows a conventional sensing system (sensing system). In addition to a panel 110 , the sensing system 100 also includes image sensing devices 120 and 130 , and a processing circuit 140 . The panel 110 has a touch surface 112 , and the shape of the touch surface 112 is a rectangle. The image sensing devices 120 and 130 are located on the same boundary of the touch surface 112, and are respectively arranged at different corners of the touch surface 112, so that the sensing ranges of the two image sensing devices cover the touch surface 112 respectively. . In addition, the image sensing devices 120 and 130 are both coupled to the processing circuit 140 . [0003] When a pointer 150 touches (or approaches) the touch surface 112 , th...

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Problems solved by technology

[0004] However, since the image sensing devices 120 and 130 are fixed (or embedded) in the panel 110, the distance between the two image sensing devices is fixed, so as long as the size of the panel 110 is selected, the user can input coordinates The size of the area (that is, the size of the sensing area) is fixed and cannot be changed

[0005] It can be seen that the above-mentioned existing sensing system and the method for defining the size of the sensing region obviously still have inconvenience and defects in product structure, method and use, and need 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 no suitable design has been developed for a long time, and there is no suitable structure and method for general products and methods to solve the above-mentioned problems. This is obviously a problem that relevant industry players are eager to solve

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