The optical mouse converts the displacement signal into an electrical pulse signal by detecting the displacement of the mouse, and then controls the movement of the cursor arrow on the screen through processing and conversion of the program.
In the same era as the development of the optical mouse, a digital optical mouse with no mechanical structure appeared. The original intention of designing this optical mouse is to raise the accuracy of the mouse to a whole new level, so that it can fully meet the needs of professional applications. This kind of optical mouse does not have the traditional design of ball, shaft and the like. Its main components are two light-emitting diodes, a light-sensitive chip, a control chip and a reflector with a grid equivalent to a dedicated mouse pad. During operation, the optical mouse must move on the reflector. The X-emitting diode and the Y-emitting diode will respectively emit light to illuminate the reflector. Then the light will be reflected back by the reflector and transmitted through the lens assembly to illuminate the sensor. The photosensitive chip converts the optical signal into a corresponding digital signal and sends it to the positioning chip for special processing, thereby generating X-Y coordinate offset data.
This kind of optical mouse did improve the accuracy index, but it exposed a lot of defects in later applications. First of all, the optical mouse must rely on the reflector. Its position data is completely generated based on the grid information in the reflector. If the reflector is dirty or worn, the optical mouse cannot determine the position of the cursor. If the reflector is inadvertently damaged or lost, the entire mouse will be scrapped. Secondly, the optical mouse is very unhumanized, and its moving direction must be perpendicular to the grid texture on the reflector. It is impossible for the user to quickly The cursor moves directly from the upper left corner of the screen to the lower right corner. Third, the cost of the optical mouse is quite high. The price of hundreds of dollars is not great today, but in those days people were only willing to pay about 20 yuan for the mouse. The high price of funds and optical mouse is not reasonable. Due to a large number of drawbacks, this kind of optical mouse has not been popular. At best, it has only been applied to a certain degree in professional mapping. However, with the popularity of the optical mouse, this optical mouse is quickly being marketed. Eliminated.
Introduction and use of optical mouse
Keep a good sitting position. You must sit in front of the keyboard in a good posture to avoid straining […]