Self-adapted infrared touch screen and precision control method thereof
An infrared touch screen, precision control technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., to increase the ability to resist sunlight interference, solve the standardization of large-scale production signals, and improve the effect of consistency
Active Publication Date: 2015-07-29
创维光电科技(深圳)有限公司
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[0005] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an adaptive infrared touch screen and its precision control method, which effectively solves the problem of standardization of infrared touch screen mass production signals, and improves the resolution of the infrared touch screen at the same time , increasing its ability to resist sunlight interference
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[0045] The present invention provides an adaptive infrared touch screen and its precision control method. Through the processing module, find out the infrared emitting lamps that emit infrared signals that are too strong or too weak, and adjust their emission power so that the infrared signals emitted by each infrared emitting lamp are consistent. The automatic control of infrared touch screen precision has effectively solved the problem of standardization of infrared touch screen mass production signals, and at the same time improved the resolution of infrared touch screen and increased its ability to resist sunlight interference.
[0046] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invent...
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The invention discloses a self-adapted infrared touch screen and a precision control method thereof. The self-adapted infrared touch screen comprises an infrared transmitting module, an infrared receiving module and a processing module, wherein the processing module is used for comparing signal intensity of an infrared signal transmitted by each infrared transmitting lamp in the infrared transmitting module with a pre-set value, and adjusting signal intensity and the transmitting power of the infrared transmitting lamps with different pre-set values so that the signal intensity of transmitted infrared signals is equal to the pre-set values. The processing module is used for adjusting the transmitting power of the infrared transmitting lams with slightly strong infrared signals or slightly weak infrared signals so that the signal intensity of transmitted infrared signals is equal to the pre-set values, and furthermore, the consistency of the transmitted signals of the infrared transmitting lamps is improved, and the problem of large-scale production signal standardization of the infrared touch screen is effectively solved; meanwhile, the resolution of the infrared touch screen is improved and the anti-sunlight-interference capability is enhanced.
Description
technical field [0001] The invention relates to the technical field of infrared touch, in particular to an adaptive infrared touch screen and a precision control method thereof. Background technique [0002] see figure 1 , most of the existing infrared touch screens use infrared emitting tubes 60 and infrared receiving tubes 70 installed around the touch panel 80, and they form mutually perpendicular infrared emitting and receiving arrays according to a one-to-one mapping relationship. The blocked energy value of the infrared beam between the receiving tubes is used to locate the position of the infrared touch point A. [0003] There are certain technical defects in the existing infrared touch screen, for example: because the infrared emitting lamp and the infrared receiving lamp are restricted by the production process level, it is difficult to achieve the same emission power, resulting in different infrared signal strengths from each infrared emitting lamp ( see figure...
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Inventor 王维
Owner 创维光电科技(深圳)有限公司