Pixart Imaging Incorporated

Pixart Imaging (penang) Sdn. Bhd.

Rizal Bin Jaffar

Kevin Len-Li Lim

Joon Chok Lee

There is provided a navigation device including an image sensor and a processor. The image sensor outputs a reference frame and a comparison frame. The processor calculates a correlation search window by changing a relative position of the comparison frame with respect to the reference frame. The processor ignores a part of pixel data of the comparison frame without being processed while calculating each correlation value of the correlation search window to reduce total computation load.

Calculation method of correlation search window ignoring some pixel data and navigation device using the same

Navigation device and calculation method of correlation search window thereof

A method for minimizing spurious motion of a mouse includes: determining whether the mouse enters a specific mode; and when the mouse is determined to enter the specific mode, generating a large correlation matrix by generating a standard size correlation matrix multiple times. The multiple standard size correlation matrices are offset with respect to each other so that an edge of each standard size correlation matrix touches at least an edge of another standard size correlation matrix to form the large correlation matrix. The specific mode is a skating mode wherein the mouse will move at high speed over a large area.

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Penang, Malaysia

Rizal Bin Jaffar