Information input device and method based on projection and infrared sensing
An infrared sensing and projection technology, which is applied in the field of information input, can solve problems such as linear shading, increase in strong laser radiation, and reduce the accuracy of multi-point input, so as to achieve the effect of improving accuracy and avoiding linear shading
Active Publication Date: 2017-02-15
SAMSUNG ELECTRONICS CHINA R&D CENT +1
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[0003] The defect of the above method is: only one infrared camera is used, which will cause linear shading and reduce the accuracy of multi-point input; moreover, the signal input depends on the light spot formed by the reflection of the laser on the human body, which is easily affected by light and distance, and strong Laser radiation also increases
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[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0037] figure 1 A schematic diagram of the composition of the information input device based on projection and infrared sensing provided by the embodiment of the present invention, as shown in figure 1 As shown, it mainly includes: projection module 11, infrared sensing module 12, processing module 13, control module 14 and storage module 15, and the number of infrared sensing modules 12 is at least two, wherein:
[0038] Projection module 11: after starting, project the image of the virtual keyboard or / and mouse or / and touchpad to the designated area.
[0039] The light source used by the projection module 11 is any visible light.
[0040] The area to be projected should be a non-heating object with a flat surface. The better the surface flatness, the higher the accuracy rate. The surface carrying the projection does not need to be...
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The invention provides an information input device and method based on projection and infrared sensing. The method includes: by a projection module, projecting the images of a virtual keyboard or / and a virtual mouse or / and a virtual touch panel; when an infrared sensing module senses the infrared ray transmitted by a human body in a projection area, determining the two-dimensional coordinates, under an infrared sensing module two-dimensional coordinate system, of each sensing area; calculating to obtain the three-dimensional coordinates, under a projection module three-dimensional coordinate system, of each sensing area according to the determined two-dimensional coordinates, under an infrared sensing module two-dimensional coordinate system, of each sensing area; comparing the three-dimensional coordinates with the three-dimensional coordinates of the images projected by the projection module, and if the sensing areas are located in the projection images, generating input signals according to the three-dimensional coordinates of the sensing areas, and inputting the signals to a terminal. By the method, information input accuracy is increased.
Description
technical field [0001] The invention relates to the technical field of information input, in particular to an information input device and method based on projection and infrared induction. Background technique [0002] In order to enhance the portability of the terminal, a technology of replacing the keyboard, mouse, touch panel, etc. of the terminal with an intelligent projection keyboard has emerged. Specifically, taking the keyboard as an example, the existing intelligent interactive projection system includes: an infrared camera unit, a virtual interactive area, a projector unit, an infrared laser transmitter unit, a storage unit, a processing unit, and a wired communication unit and a wireless communication unit; when any position in the virtual interaction area is "clicked" by a finger or other touch device, the infrared camera unit detects that the light field is blocked, and the processing unit identifies the position information of the "click" event, and the storag...
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IPC IPC(8): G06F3/042
Inventor 黄耀殷国甫颜晓蔚
Owner SAMSUNG ELECTRONICS CHINA R&D CENT