Optically driven high-resolution and high-sensitivity touch controller
A touch controller and controller technology, applied in the input/output process of instruments, data processing, calculations, etc., can solve the problems of insufficient resolution and sensitivity, unusable, and lack of touch position accuracy.
Active Publication Date: 2019-04-05
李文杰
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Problems solved by technology
However, the touch screen has a congenital defect: the touch screen lacks the accuracy (positioning accuracy) of measuring the touch position when a finger or needle stick touches its surface; Disadvantages, the current touch screen products cannot be used in offices or professional electronic drawing environments
Therefore, compared with the resolution, speed, and multi-touch functions of today's displays, the functions of traditional touchpads are too crude, which has led many notebook computer users to abandon them and use traditional touchpads instead. Mouse, so that it does not need to change its usage habits, and still transmits the vector value of hand movement back to the notebook computer through USB or other transmission media for its use in controlling the cursor
In essence, the above-mentioned problems of traditional touchpads mostly come from the lack of resolution and sensitivity; and this is actually a fundamental problem of traditional technology: although there are still some users in the market, they are learning to adapt Legacy touchpad functionality, and managed to accept legacy touchpads, but the above issues persist
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[0027] Figure 2A Shown is a translucent panel 10 with a highly diffusive Lambertian panel 11 placed on top of the apparatus of the invention. When the incident light strikes the surface 11 of the high-scattering Lambertian plate, several types of light such as reflected light, diffuse reflection light, and diffuse transmission light are generated. From a physical definition, the so-called Lambertian surface means that when the light falls on the surface with high scattering degree, it is scattered by a large amount (Scatter), so that the brightness presented on the entire surface is quite uniform, regardless of the observer From any angle, it's pretty much the same. This surface is isotropic, which is effective in all directions of up, down, left, and right, and of course, is also effective in diffusing and penetrating light. In other words, if an observer looks from the bottom of the translucent plate 10, the surface he sees is also a uniform surface. It is worth noting h...
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The invention discloses a touch sensing device, which is optically activated, and therefore a portable device can be provided with the high resolution function and the high sensitivity function. Other functions such as cursor movement, control over gaming device, starting or closing of AUTOCAD, web page navigation, or non-movement electronic devices (such as Flat Panel TV) can be provided by the object control function having the high resolution and the high sensitivity.
Description
technical field [0001] The present invention provides a high-sensitivity and high-resolution optical touch controller, which can also be used as a cursor controller. There is a cavity in the touch controller, and the cavity is covered with a translucent plate. The translucent plate has a light diffusion surface, and the hollow chamber also has a light source and an image detector. By detecting when an indicator touches the translucent plate, images of high diffusion and low diffusion are different, knowing that an indicator is in contact with the translucent plate, and by detecting the indicator and the translucent plate The condition of relative motion between each other when in contact, resulting in a signal to change the function of an electronic instrument or the movement of a cursor on its display. Background technique [0002] In today's computer and electronic products, many products rely on touch devices to perform communication and interaction functions between hum...
Claims
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IPC IPC(8): G06F3/042
Inventor 李文杰
Owner 李文杰