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US 2023/0360504 A1Published application
Algorithm Enhancements for Haptic-Based Phased-Array Solutions
AssigneeUltrahaptics IP Ltd
InventorsBrian Kappus, Benjamin John Oliver Long, Thomas Andrew Carter
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Abstract
Producing multiple independent fields from many phased acoustic transducers represents a difficult computational problem. By first dividing up each field to its own group of transducers and then treating each group as an element with adjustable phase, one can minimize the field-to-field interference through a power iteration solution. These solutions can be further refined by including tracking information from users in the space and how they shadow or reflect the acoustic fields.
Claims6
1-18. (canceled)
A method comprising:
- i) producing an acoustic field from a transducer array, the transducer array comprising a plurality of transducers having known relative positions and orientations;
- ii) defining a plurality of control points to be experienced by at least one user, wherein each of the plurality of control points has a known spatial relationship relative to the transducer array;
- iii) encoding a first virtual transducer of an eigensystem by assuming the first virtual transducer is similar to a second virtual transducer used in a linear system solution;
- iv) ensuring that a phase expressed at one of the control points does not change more than a given angular amount;
- and
- v) creating a synchronized pseudorandom binary sequence for using a pseudorandom phase approach depending on bits of the synchronized pseudorandom binary sequence to reduce communication between at least two of the plurality of transducers to be able to contribute to the same control point in the acoustic field.
3 more elements
Dependencies are inferred from the claim text.