SYSTEM AND METHOD FOR FINGER RESOLUTION IN TOUCH SCREENS
First Claim
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1. A method for identifying a plurality of interactions with a digitizer sensor, the method comprising:
- assigning a set of values to a respective a set of entries of a relative magnitude matrix according to a set of measured values, the set of values corresponding to a respective set of junctions in the digitizer sensor, wherein a value corresponding to a junction is calculated based on relating a measured value of the junction to a reference value associated with the junction;
determining an interaction threshold;
a. determining a set of entries in the relative magnitude matrix having values above the interaction threshold;
b. determining at least one subset of entries in the set, the subset associated with a continuous area of the digitizer sensor;
c. for each of the at least one subset of entries;
if the continuous area is associated with a predefined arrangement of junctions, indicating the continuous area as an interaction area; and
if the continuous area is larger than a predefined size, increasing the interaction threshold by an amount and repeating steps a, b and c.
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Abstract
System and methods for determining multiple interactions with a digitizer sensor are provided. Entries in a matrix may be provided based on measured and reference values associated with junctions in a digitizer sensor. An entry associated with at least two extreme values related to respective at least to dimensions of the digitizer sensor may be located. A junction associated with the located entry may be designated as an interaction point. In some embodiments, one or more interactions may be determined using a topographical-like evaluation of interactions.
82 Citations
21 Claims
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1. A method for identifying a plurality of interactions with a digitizer sensor, the method comprising:
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assigning a set of values to a respective a set of entries of a relative magnitude matrix according to a set of measured values, the set of values corresponding to a respective set of junctions in the digitizer sensor, wherein a value corresponding to a junction is calculated based on relating a measured value of the junction to a reference value associated with the junction; determining an interaction threshold; a. determining a set of entries in the relative magnitude matrix having values above the interaction threshold; b. determining at least one subset of entries in the set, the subset associated with a continuous area of the digitizer sensor; c. for each of the at least one subset of entries; if the continuous area is associated with a predefined arrangement of junctions, indicating the continuous area as an interaction area; and if the continuous area is larger than a predefined size, increasing the interaction threshold by an amount and repeating steps a, b and c. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for identifying a plurality of interactions with a digitizer sensor, the method comprising:
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receiving a set of entries of a relative magnitude matrix according to a set of values, the set of values corresponding to a respective set of junctions in the digitizer sensor, wherein a value corresponding to a junction is calculated based on relating a measured value of the junction to a reference value associated with the junction; determining an interaction threshold; a. determining a set of entries in the relative magnitude matrix having values below the interaction threshold; b. determining at least one subset of entries in the set, the subset associated with a continuous area of the digitizer sensor; and c. for each of the at least one subset of entries; if the continuous area is associated with a predefined arrangement of junctions, indicating the continuous area as an interaction area; and if the continuous area is larger than a predefined size, decreasing the interaction threshold by an amount and repeating steps a, b and c. - View Dependent Claims (8)
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9. A method for identifying a plurality of interactions with a digitizer sensor, the method comprising:
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providing a set of entries in a relative magnitude matrix according to a set of values, the set of values corresponding to a respective set of junctions in the digitizer sensor, wherein a value corresponding to a junction is based on relating a measured value of the junction to a reference value associated with the junction; and identifying at least one junction as a location of a touch point based on locating an entry in the relative magnitude matrix associated with at least two extreme values related to at least two dimensions of the digitizer sensor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An article comprising a non-transitory computer-readable storage medium, having stored thereon instructions, that when executed on a computer, cause the computer to:
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provide a set of entries in a relative magnitude matrix according to a set of values, the set of values corresponding to a respective set of junctions in a digitizer sensor, wherein a value corresponding to a junction is based on relating a measured value of the junction to a reference value associated with the junction; and identify at least one junction as a location of a touch point based on locating an entry in the relative magnitude matrix associated with at least two extreme values related to at least two dimensions of the digitizer sensor. - View Dependent Claims (19, 20, 21)
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Specification