Low power consumption, broad navigability optical mouse
AssigneeAvago Technologies ECBU IP (Singapore) Pte. Ltd.
InventorsDouglas M. Baney, Tong Xie, Marshall T. DePue
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Abstract
An optical navigation system for determining movement relative to a navigation terrain includes a first source and a second source of optical radiation for illuminating the navigation terrain, the first source differing from the second source in at least one operating parameter. The system further includes means to select the first source and the second source independently based on decision criteria. The system further includes a detector for capturing patterns in the optical radiation subsequent to illuminating of the navigation terrain.
Claims22
An optical navigation system for determining movement relative to a navigation terrain, said system comprising:
- a first source and a second source of optical radiation for illuminating a portion of said navigation terrain, said first source differing from said second source in at least one operating parameter;
- means to select said first source and said second source independently based on decision criteria;
- and
- a detector for capturing patterns in said optical radiation subsequent to said illuminating of said navigation terrain.
A method for determining relative movement between an optical navigation device and a navigation terrain, said method comprising:
- providing an optical navigation system comprising:
- a first source and a second source of optical radiation for illuminating a portion of said navigation terrain, said first source differing from said second source in at least one operating parameter;
- and
- a detector for capturing patterns in said optical radiation subsequent to said illuminating;
- selecting initially said at least one differing operating parameter for said first and said second sources independently;
- illuminating said navigation terrain portion;
- capturing patterns in said optical radiation subsequent to said illuminating;
- evaluating said captured patterns;
- and
- changing said selected at least one differing operating parameter in response to decision criteria.
Dependencies are inferred from the claim text.