Interactive cord with improved capacitive touch sensing
AssigneeGoogle Inc.
InventorsTong Wu, Munehiko Sato
Life of this patent
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Abstract
An interactive cord system can include sensing circuitry coupled to a system ground and an interactive cord. The interactive cord can include a plurality of non-conductive lines a plurality of conductive sensing lines at least partially woven with one or more of the plurality of non-conductive lines to form at least one touch-sensitive area along the interactive cord and one or more conductive grounding lines electrically connected with the system ground and extending at least partially along an outer portion of the interactive cord.
Claims20
An interactive cord system, comprising:
- sensing circuitry coupled to a system ground;
- and
- an interactive cord, comprising:
- a plurality of non-conductive lines;
- a plurality of conductive sensing lines at least partially woven with one or more of the plurality of non-conductive lines to form at least one touch-sensitive area along the interactive cord;
- and
- one or more conductive grounding lines electrically connected with the system ground and extending at least partially along an outer portion of the interactive cord.
An interactive object, comprising:
- sensing circuitry coupled to a system ground;
- an interactive cord, a plurality of non-conductive lines, and a plurality of conductive sensing lines at least partially woven with one or more of the plurality of non-conductive lines to form at least one touch-sensitive area along the interactive cord;
- and
- a grounding object configured to provide capacitive coupling with a user of the interactive object, the grounding object electrically connected with the system ground of the sensing circuitry.
A method for forming an interactive cord system, the method comprising:
- forming a plurality of conductive sensing lines together with one or more of a plurality of non-conductive lines to form a touch-sensitive area of an interactive cord;
- arranging one or more conductive grounding lines to extend at least partially along the interactive cord in a longitudinal direction of the interactive cord;
- and
- directly electrically connecting the one or more conductive grounding lines with a system ground of sensing circuitry configured to detect a change in capacitance associated with the plurality of conductive sensing lines.
Dependencies are inferred from the claim text.