System and method for selectively setting optical navigation resolution
AssigneeAvago Technologies ECBU IP (Singapore) Pte. Ltd.
InventorsChiang Mei Teo, Angeline Saw Khoon Khoo, Boon How Kok, Ming Yong Mau, Qing Xing Chen, Sze Yin Lee, Beng Chye Lye
Life of this patent
Estimating the term…
Abstract
A system and method for selectively setting an optical navigation resolution utilizes a comparison of a comparison displacement value to a threshold value to set the optical navigation resolution to an effective resolution selected from a plurality of effective resolutions. The comparison displacement value is based on at least one of a first displacement value in a first direction and a second displacement value in a second direction, which were derived for estimating motion.
Claims20
A method for selectively setting an optical navigation resolution, said method comprising:
- reading a first displacement value in a first direction and a second displacement value in a second direction, said first and second displacement values being used for estimating motion;
- deriving a comparison displacement value based on at least one of said first and second displacement values;
- comparing said comparison displacement value to a threshold value;
- and
- setting said optical navigation resolution to an effective resolution selected from a plurality of effective resolutions in response to said comparing of said comparison displacement value to said threshold value.
A system comprising:
- an image sensor configured to capture frames of image data;
- a navigation engine operably connected to said image sensor to receive said frames of image data, said navigation engine being configured to generate a first displacement value in a first direction and a second displacement value in a second direction using said frames of image data;
- and
- a resolution-setting module operably connected to said navigation engine to receive said first and second displacement values, said resolution-setting module being configured to derive a comparison displacement value based on at least one of said first and second displacement values and to set an optical navigation resolution to an effective resolution selected from a plurality of effective resolutions in response to a comparison of said comparison displacement value to a threshold value.
Dependencies are inferred from the claim text.