Optical navigation chip used in an optical mouse

An optical navigation system is capable of being used in an optical mouse, the optical navigation system, comprising:

• an optical sensing array, outputting data by receiving a light reflected from a working surface;
• and
• a circuitry, tracking movement in a two-dimensional space of the optical navigation system relative to the work surface by comparing data derived from the optical sensing array outputs captured at a first time with data derived from the optical sensing array outputs captured at a second time;
• wherein the circuitry is suspended signals to a processor by evaluating data derived from at least some of the photo detector outputs when the optical mouse is lifted or moving on the work surface being featureless in the two-dimensional space.

An optical navigation system is capable of being used in an optical mouse, the optical navigation system comprising:

• a two dimensional array of photo detectors, each of at least some photo detectors producing an output by receiving a light reflected from a working surface;
• and
• a circuitry, tracking movement in a two-dimensional space of the optical navigation system relative to the work surface by comparing data derived from at least some of the photo detector outputs captured at a first time with data derived from at least some of the photo detector outputs captured at a second time;
• wherein the circuitry suppresses signals to a processor by evaluating data derived from at least some of the photo detector outputs if the optical mouse is lifted or moving on the work surface being featureless in the two-dimensional space.