Infrared tube touch screen AGC adjustment method and system
An infrared pairing tube and adjustment method technology, which is applied in the field of educational interactive smart panels, can solve problems such as abnormal touch on the panel, inconvenience for users, and inability to realize the touch function of the tablet, and achieve the effect of eliminating the problem of abnormal instantaneous touch
Active Publication Date: 2018-05-25
GUANGZHOU SHIRUI ELECTRONICS
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Problems solved by technology
The specific method is: when the educational interactive smart blackboard is used in the classroom, the teacher closes the blackboard on the front of the tablet without turning off the whole machine after class. Since the back of the blackboard has a high reflectivity to infrared light, the existing reflection will cause the ADC in the tablet to (that is, the A / D converter) signal is too high, and in this case the AGC will automatically adjust to lower the ADC signal; after that, when the blackboard is turned on next time, the ADC signal is too low even if the panel is in a normal environment, resulting in Instantaneous touch abnormality occurs on the tablet
Although in this case, AGC will automatically adjust to make the ADC increase to a suitable value, but it will take some time for the AGC to automatically adjust until the ADC recovers to an appropriate level. During this period, the tablet will not be able to realize the touch function, which will cause inconvenience to users.
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[0053] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0054] The embodiments provided by the present invention include the embodiment of the AGC adjustment method of the infrared paired tube touch screen, and also include the corresponding embodiment of the AGC adjustment system of the infrared paired tube touch screen. Each will be described in detail below.
[0055] figure 1 It i...
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The present invention relates to an AGC adjustment method and system for an infrared pair tube touch screen. The method comprises: acquiring an ambient environment light value of a touch screen to obtain a change condition of the ambient environment light value of the touch screen; determining a touch screen shielded event and a touch screen shield-removing event according to the change condition of the light value; and if the touch screen shielded event is monitored, setting touch screen AGC in a locked state, and if the touch screen shield-removing event is monitored, setting the touch screen AGC in an unlocked state. By means of the present invention, the problem of instantaneous touch abnormality when a shield of a touch screen is removed can be eliminated.
Description
technical field [0001] The invention relates to the technical field of educational interactive intelligent flat panels, in particular to an AGC adjustment method and system for an infrared paired tube touch screen. Background technique [0002] Taking the educational interactive smart tablet as an example, the AGC (automatic gain control, automatic gain control) of the existing infrared pair tube touch screen will be adjusted in real time during use. The specific method is: when the educational interactive smart blackboard is used in the classroom, the teacher closes the blackboard on the front of the tablet without turning off the whole machine after class. Since the back of the blackboard has a high reflectivity to infrared light, the existing reflection will cause the ADC in the tablet to (that is, the A / D converter) signal is too high, and in this case the AGC will automatically adjust to lower the ADC signal; after that, when the blackboard is turned on next time, the A...
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IPC IPC(8): G06F3/042G06F3/041
CPCG06F3/0416G06F3/0421G06F2203/04109G06F3/042
Inventor 魏洋洋张维元侯旻翔胡隽鹏
Owner GUANGZHOU SHIRUI ELECTRONICS