What is the mouse refresh rate

Mouse refresh rate is also called the mouse sampling frequency, refers to the mouse can collect and process the number of images per second. Refresh rate is also one of the important performance indicators of the mouse, that is, the mouse every second can be collected image data, generally "fps/s (frame/sec)" as a unit.

The significance of the concept of mouse refresh rate

Mouse refresh rate So to speak, even if the optical mouse has many advantages, but the refresh rate is not its Achilles heel, which is the early optical mouse did not penetrate the mainstream market one of the main reasons.

Take a simple example, for example, in FPS game (first person shooter) in the quick turn, the low refresh rate of the optical mouse appears to lose the cursor pointer problem. The refresh rate is so important to the optical mouse, how do you understand it? Different from the electromechanical mouse through the rotation of the grid to generate pulsating signals and mobile information, the optical mouse is based on a CMOS sensor under the mouse is responsible for the resolution of the mouse movement. Refresh rate performance indicators are often ignored by consumers, because the refresh rate is also known as the sampling frequency, many friends will be the sampling frequency and defined as the sampling rate of the DPI value of the muddy Xiao. Refresh rate in the application also occupies a very important position, for example, the mouse quickly move a distance, if the mouse's refresh rate is less than the moving distance within the image data, the mouse scan of the image data will appear blind spots, that is, the image data can not be scanned, resulting in the inability to locate the cursor position, resulting in the previous more common pointer loss. To be exact, the higher the mouse refresh rate parameter, the greater the data rate it will sample per second, and the higher the performance.

Refresh rate and the effect of CMOS pixels on the mouse

How can we make the mouse meet our mobile requirements? For the mouse, you can increase the number of CMOS pixels or improve the refresh rate.

In the second half of 2002, Logitech developed a new generation of MX optical engine, which introduced a novel mouse performance indicator-pixel processing capabilities. Pixel processing capability = number of pixels per frame x refresh rate, which is a combination of refresh rate and CMOS pixel Prime index. At that time, the Logitech Aurora Yun Yu (MX500) pixel processing capability was 4.7 million pixels per second.

Improve your mouse refresh rate CMOS pixel impact

While Microsoft's Optical Silver Shark 4.0 (IE4.0) has a 6000 frame/second refresh rate and 22x22 CMOS size, it is easy to figure out the pixel processing power of Microsoft's mouse =22x22x6000=290 million pixels per second. In fact, the Logitech MX engine refresh rate is not as Microsoft, about 5000 frames/sec, but Logitech increased the number of CMOS pixels results. The optical scanning rate of the unit is the second/second, which is 1 seconds the bald head can scan how many times the signal. In general, the scanning rate reached 2,500 times/sec, it is not easy to drop the phenomenon of the frame. Now slightly better mouse is 6,000 times/sec Optical scanning rate, dedicated game mouse up to 9,000 times/sec, as long as more than 6,000 times/second optical scanning rate of the mouse has been able to cope with the CS such need to pinpoint the game of the pointer.