Digitizer system
First Claim
1. A digitizer system comprising:
- a digitizer sensor configured to pick up an electromagnetic signal emitted by a stylus, the digitizer sensor comprising;
a designated sensing area comprising a sensing grid defining junctions; and
a peripheral area comprising;
a plurality of conductive elements configured to connect the sensing grid to a circuit; and
at least one auxiliary sensing line extending over the peripheral area in the vicinity of the plurality of conductive elements and connected to the circuit; and
the circuit, wherein the circuit is configured to;
detect first outputs from the sensing grid via the plurality of conductive elements;
identify, from the first outputs, first junctions in the sensing grid that appear to be picking up the electromagnetic signal emitted by the stylus;
detect a second output from the at least one auxiliary sensing line; and
report an interaction position of the stylus based on the first outputs as long as the number of the first junctions along at least one axis of the sensing grid is below a defined threshold number of junctions and amplitude of the second output is below a defined amplitude threshold.
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0 Petitions
Accused Products
Abstract
A digitizer system includes a designated sensing area comprising a plurality of sensing lines for sensing an electromagnetic signal emitted by a stylus, circuitry for detecting output from the plurality of sensing lines and for determining an interacting position of the stylus in the designated sensing area based on the output detected and a peripheral area contiguous to the designated sensing area. The peripheral area includes a plurality of conductive elements for connecting the sensing lines to the circuitry and at least one auxiliary sensing line extending over the peripheral area in the vicinity of the conductive elements and connected to the circuitry. The auxiliary sensing line senses the electromagnetic signal when it is emitted over the peripheral area and the circuitry detects output from the at least one auxiliary sensing line.
13 Citations
20 Claims
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1. A digitizer system comprising:
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a digitizer sensor configured to pick up an electromagnetic signal emitted by a stylus, the digitizer sensor comprising; a designated sensing area comprising a sensing grid defining junctions; and a peripheral area comprising; a plurality of conductive elements configured to connect the sensing grid to a circuit; and at least one auxiliary sensing line extending over the peripheral area in the vicinity of the plurality of conductive elements and connected to the circuit; and the circuit, wherein the circuit is configured to; detect first outputs from the sensing grid via the plurality of conductive elements; identify, from the first outputs, first junctions in the sensing grid that appear to be picking up the electromagnetic signal emitted by the stylus; detect a second output from the at least one auxiliary sensing line; and report an interaction position of the stylus based on the first outputs as long as the number of the first junctions along at least one axis of the sensing grid is below a defined threshold number of junctions and amplitude of the second output is below a defined amplitude threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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detecting first outputs from a digitizer sensor comprising a designated sensing area and a peripheral area, the designated sensing area comprising a sensing grid defining junctions and the peripheral area comprising a plurality of conductive elements configured to connect the sensing grid to a circuit and at least one auxiliary sensing line in the vicinity of the plurality of conductive elements; identifying, from the first outputs, first junctions in the in the grid that appear to be picking up the electromagnetic signal emitted by the stylus; detecting a second output from the at least one auxiliary sensing line; and reporting an interaction position of the stylus from the first outputs as long the number of the first junctions along at least one axis of the sensing grid is below a defined threshold number of junctions and amplitude of the second output is below a defined amplitude threshold. - View Dependent Claims (11, 12, 13, 14)
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15. A digitizer system comprising:
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a digitizer sensor configured to pick up an electromagnetic signal emitted by a stylus, the digitizer sensor comprising; a designated sensing area comprising a sensing grid defining junctions; and a peripheral area comprising; a plurality of conductive elements configured to connect the sensing grid to a circuit; and at least one auxiliary sensing line extending over the peripheral area in the vicinity of the plurality of conductive elements and connected to the circuit; and the circuit, wherein the circuit is configured to; detect first outputs from the sensing grid via the plurality of conductive elements; identify, from the first outputs, first junctions in the sensing grid that appear to be picking up the electromagnetic signal emitted by the stylus and shape of an interaction area defined by spread of the first junctions; detect a second output from the at least one auxiliary sensing line; report an interaction position of the stylus from the first outputs as long as amplitude of the second output is below a defined amplitude threshold and a parameter defining the shape of the interaction area indicates a circular, elliptical or rectangular shape; and refrain from reporting an interaction position of the stylus as long as the amplitude of the second output is above the defined amplitude threshold or the parameter defining the shape of the interaction area does not indicate the circular or the elliptical shape. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification