CAPACITIVE SENSOR PATTERNS
First Claim
1. A method for design and manufacture of a plurality of touch sensors for touch-sensitive devices, comprising:
- identifying at least one behavioral quality for the touch-sensitive devices;
selecting at least one parameter associated with the composition or geometry of a stack of row conductors and column conductors on each of the touch sensors associated with the devices, the selection being based on the identified at least one behavioral quality;
manufacturing each of the plurality of touch sensors by;
arranging a plurality of row conductors and a plurality of column conductors in a stack such that the stack or a component thereof has a geometry or composition that meets the at least one parameter, the path of each of the row conductors crossing the path of each of the column conductors;
providing at least one orthogonal signal transmitter for simultaneously transmitting each of a plurality of orthogonal row signals on a respective one of at least some of the plurality of row conductors; and
,providing a detector for detecting an amount of each of the plurality of orthogonal row signals present on each of the plurality of column conductors.
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Accused Products
Abstract
Methods and devices for providing fast multi-touch sensors are disclosed. In an embodiment, a method is provided for design and manufacture of touch sensors for touch-sensitive devices. At least one behavioral quality is identified for the touch-sensitive devices. At least one parameter is selected, the parameter being associated with the composition or geometry of a stack of row conductors and column conductors on each of the touch sensors associated with the devices, the selection being based on the identified at least one behavioral quality. Multi-touch sensors are then manufactured by arranging a plurality of row conductors and a plurality of column conductors in a stack such that the stack or a component thereof has a geometry or composition that meets the at least one parameter. An orthogonal signal transmitter is provided for simultaneously transmitting each of a plurality of orthogonal row signals on a respective one of at least some of the plurality of row conductors. A detector is provided for detecting an amount of each of the plurality of orthogonal row signals present on each of the plurality of column conductors. Specific multi-touch sensors are also disclosed for hover applications, large screen applications, and others.
11 Citations
30 Claims
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1. A method for design and manufacture of a plurality of touch sensors for touch-sensitive devices, comprising:
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identifying at least one behavioral quality for the touch-sensitive devices; selecting at least one parameter associated with the composition or geometry of a stack of row conductors and column conductors on each of the touch sensors associated with the devices, the selection being based on the identified at least one behavioral quality; manufacturing each of the plurality of touch sensors by; arranging a plurality of row conductors and a plurality of column conductors in a stack such that the stack or a component thereof has a geometry or composition that meets the at least one parameter, the path of each of the row conductors crossing the path of each of the column conductors; providing at least one orthogonal signal transmitter for simultaneously transmitting each of a plurality of orthogonal row signals on a respective one of at least some of the plurality of row conductors; and
,providing a detector for detecting an amount of each of the plurality of orthogonal row signals present on each of the plurality of column conductors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for design of a plurality of touch sensors for touch-sensitive devices, comprising:
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identifying at least one behavioral quality for the touch-sensitive devices; selecting at least one parameter associated with the composition or geometry of a stack of row conductors and column conductors on each of the touch sensors associated with the devices, the selection being based on the identified at least one behavioral quality; using the selection of the at least one parameter to narrow a range of possible values and tradeoffs for a plurality of other parameters; and
,creating a sensor design wherein a stack comprising the row conductors and the column conductors, or a component of the stack, has a geometry or composition that meets the at least one parameter.
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29. A low-latency touch sensitive device having a large touch surface, comprising:
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first and second pluralities of conductors being arranged such that when the touch sensitive device is not being touched, a first level of signal is coupled between them, and when the touch sensitive device is being touched, a second level of signal is coupled between them; the first and second pluralities of conductors comprising a material having an ohms/square higher than a predetermined amount; a touch surface greater than 24 inches in length; at least one signal generator adapted to generate a plurality of unique orthogonal signals, each unique orthogonal signal being orthogonal to each of the other unique orthogonal signals; receiver associated with the first plurality of conductors, the receiver being adapted to receive signals present on each of the second plurality of conductors; signal processor adapted to decode the signals received by the receiver and to determine a touch event.
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30. A low-latency touch sensitive device capable of determining a hover event, comprising:
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first and second pluralities of conductors being arranged such that when the touch sensitive device is not being touched, a first level of signal is coupled between them, and when the touch sensitive device is being touched, a second level of signal is coupled between them; the first and second pluralities of conductors being arranged to have a projection higher than a predetermined amount; at least one signal generator adapted to generate a plurality of unique orthogonal signals, each unique orthogonal signal being orthogonal to each of the other unique orthogonal signals; receiver associated with the first plurality of conductors, the receiver being adapted to receive signals present on each of the second plurality of conductors; signal processor adapted to decode the signals received by the receiver and to determine a hover event.
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Specification