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US 9,004,677 B1Granted
Method and apparatus for tracking movement of a handheld device relative to a medium
AssigneeMarvell International Ltd.
InventorsJames D. Bledsoe, James Mealy, Asher Simmons
Life of this patent
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Abstract
Systems, apparatuses, and methods for an adaptive filter scheme in handheld positioning device are described herein. The adaptive filter scheme may determine a direction that the positioning device is traveling and adjust one or more parameters of the filter scheme based at least in part on the determined direction. Other embodiments may be described and claimed.
Claims16
An apparatus comprising:
- a controller configured to
- control a sensor to capture a plurality of images of a medium adjacent to the sensor, wherein the capture of the plurality of images occurs relative to a reference location located on the medium,
- determine a plurality of values based at least in part on the plurality of images, wherein the plurality of values correspond to movement of the sensor relative to the reference location located on the medium, and
- determine, based at least in part on the plurality of values, a direction of the movement of the sensor relative to the reference location located on the medium;
- and
- a filter configured to
- based at least in part on the determined direction of the movement of the sensor relative to the reference location located on the medium, adjust a parameter of a data filtering scheme, and
- filter the plurality of values in accordance with the adjusted parameter of the data filtering scheme, wherein the filtered plurality of values are useable by the controller to track the movement of the sensor relative to the reference location located on the medium.
5 more elements
An apparatus comprising:
- a print head having a plurality of nozzles;
- a sensor;
- a control block having a controller configured to
- control the sensor to capture a plurality of images of a medium adjacent to the sensor, wherein the capture of the plurality of images occurs relative to a reference location located on the medium,
- determine a plurality of values based at least in part on the plurality of images, wherein the plurality of values correspond to movement of the sensor relative to the reference location located on the medium, and
- determine, based at least in part on the plurality of values, a direction of the movement of the sensor relative to the reference location located on the medium;
- and
- a filter configured to
- based at least in part on the determined direction of the movement of the sensor relative to the reference location located on the medium, adjust a parameter of a data filtering scheme, and
- filter the plurality of values in accordance with the adjusted parameter of the data filtering scheme, wherein the filtered plurality of values are useable by the control block to track the movement of the sensor relative to the reference location located on the medium.
7 more elements
A method comprising:
- capturing a plurality of images of a medium adjacent to an apparatus;
- based at least in part on the plurality of images, determining a plurality of values, wherein the plurality of values correspond to movement of the apparatus relative to a reference location located on the medium;
- based at least in part on the plurality of values, determining a direction of movement of the apparatus relative to the reference location located on the medium;
- based at least in part on the determined direction of the movement of the apparatus relative to the reference location located on the medium, adjusting a parameter of a data filtering scheme;
- and
- filtering the plurality of values in accordance with the adjusted parameter of the data filtering scheme, wherein the filtered plurality of values are useable to track the movement of the apparatus relative to the reference location located on the medium.
3 more elements
Dependencies are inferred from the claim text.