subject: Optical Mouse in use a few issues - optical mouse, digital supplies - office supplies industry [print this page] Optical Mouse in use a few issues - optical mouse, digital supplies - office supplies industry
We use optical Mouse Usually encountered in the course of the following questions: In the glass, metal and other smooth surfaces, or some special color on the surface of the mouse does not work, the performance of the cursor Dayton lag, tremor, drift, or no response or even the cursor is lost, these issues until now has not fully resolved. Why would such a situation? Basic reason is limited by the principle of optical mouse, we might have for further analysis.
We know, optical mouse, optical engine, receiving feedback through the images to determine the cursor position, if the mobile surface is too smooth, then it may not generate enough diffuse light, such sensors receive the reflected light intensity is very weak, so unable to determine positioning chip and the resulting mouse not working properly horrendously.
The glass currently on the market and the metal mouse pad mouse pad with smooth surface are not, instead of using the grinding treatment, diffuse in good condition, but still not many optical mouse products work on it. We know that the optical mouse positioning adjacent chip images by comparing the difference between feature points on the matrix to determine the cursor location information, and some glass and metal mouse pad mouse pads done a very fine matte surface, surface height, and if the traditional light machine mouse on it can be said to move swiftly, handy, but the situation on the optical mouse is not the case.
Highly consistent with the surface lead to different characteristic points of difference is too small, optical mouse sensors to convert the digital signal can not reflect the differences in positioning chip is difficult to compare the natural treatment, which appeared mouse uncertainty. However, the sensor manufacturers can increase the size of CMOS light sensor to solve this problem. The larger the light-sensitive device, taken to the higher accuracy of image resolution, the greater the number of feature points, positioning chips comparable feature points, the more, this can make more accurate judgments. Of course, increased sensor size means that the amount of information to deal with more, and locate the computing power of chips have to simultaneously improve Caixing. At present the program on behalf of such technology is Agilent's "MX optical engine positioning", ordinary mouse sensor specification 22dpi 22dpi, while the "MX optical engine positioning" is increased to the 30dpi 30dpi, have increased the amount of information 80%. The optical mouse can not work in some of the color of the surface of the problem (also known as the "color blindness disease"), the principle and the above situation is similar. By capturing the image and the optical engine to achieve the difference between the cursor position, but to capture an image requires the sensor to capture a certain light intensity, uniform diffuse reflection of the reflected light. However, most sensors can only be some shade to the formation of a specific wavelength sensors, the shade of the other bands are powerless. If the mouse pad surface can just be sensitive to the sensor absorbs shade, resulting in insufficient strength reflected back to the shade, then the sensor can not make an effective induction, naturally not calculated the exact location of the cursor. However, the "color blindness disease" is not really defective, the user need only select a color for the mouse pad can be, and if so the mouse manufacturer devoting himself to solve this problem, probably need to spend a higher cost.
