Systems and methods for sensor devices having a non-commensurate number of transmitter electrodes
First Claim
1. A processing system for an input device, the processing system comprising:
- A transmitter module comprising transmitter circuitry, the transmitter module coupled to a plurality of transmitter electrodes comprising a first set of transmitter electrodes and a second set of transmitter electrodes, wherein the first set of transmitter electrodes and the second set of transmitter electrodes are disjoint and have different sizes;
wherein the transmitter module is configured to simultaneously transmit a first plurality of transmitter signals with the first set of transmitter electrodes during a first period, and to simultaneously transmit a second plurality of transmitter signals with the second set of transmitter electrodes during a second period, wherein the first period and the second period are non-overlapping;
wherein, during the first period, each of the first plurality of transmitter signals is based on a different sequence of a code, and, during the second period, each of the second plurality of transmitter signals is based on a different sequence of the code, wherein the code comprises a set of mathematically independent sequences and has a size equal to the size of the first set of transmitter electrodes;
a receiver module coupled to a plurality of receiver electrodes and configured to receive first resulting signals during the first period and second resulting signals during the second period; and
a determination module configured to produce a plurality of demodulated signals based on the code, the first resulting signals, and the second resulting signals, and to determine positional information for an input object in a sensing region of the input device based on the demodulated signals.
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Accused Products
Abstract
A processing system for an input device includes a transmitter modules coupled to a plurality of transmitter electrodes including a first set and a second set of transmitter electrodes, the first set and second set being disjoint and having different sizes. The transmitter module is configured to simultaneously transmit a first plurality of transmitter signals with the first set of transmitter electrodes during a first period, and to simultaneously transmit a second plurality of transmitter signals with the second set of transmitter electrodes during a second period, wherein the first period and the second period are non-overlapping. Each of the first plurality of transmitter signals is based on a different sequence of a code, which includes a set of mathematically independent sequences and has a size equal to the size of the first set of transmitter electrodes.
78 Citations
20 Claims
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1. A processing system for an input device, the processing system comprising:
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A transmitter module comprising transmitter circuitry, the transmitter module coupled to a plurality of transmitter electrodes comprising a first set of transmitter electrodes and a second set of transmitter electrodes, wherein the first set of transmitter electrodes and the second set of transmitter electrodes are disjoint and have different sizes; wherein the transmitter module is configured to simultaneously transmit a first plurality of transmitter signals with the first set of transmitter electrodes during a first period, and to simultaneously transmit a second plurality of transmitter signals with the second set of transmitter electrodes during a second period, wherein the first period and the second period are non-overlapping; wherein, during the first period, each of the first plurality of transmitter signals is based on a different sequence of a code, and, during the second period, each of the second plurality of transmitter signals is based on a different sequence of the code, wherein the code comprises a set of mathematically independent sequences and has a size equal to the size of the first set of transmitter electrodes; a receiver module coupled to a plurality of receiver electrodes and configured to receive first resulting signals during the first period and second resulting signals during the second period; and a determination module configured to produce a plurality of demodulated signals based on the code, the first resulting signals, and the second resulting signals, and to determine positional information for an input object in a sensing region of the input device based on the demodulated signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An input device comprising:
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a plurality of transmitter electrodes comprising a first set of transmitter electrodes and a second set of transmitter electrodes, wherein the first set of transmitter electrodes and the second set of transmitter electrodes are disjoint and have different sizes; a plurality of receiver electrodes; and a processing system communicatively coupled to the plurality of transmitter electrodes and the plurality of receiver electrodes, the processing system configured to; simultaneously transmit a first plurality of transmitter signals with the first set of transmitter electrodes during a first period, and to simultaneously transmit a second plurality of transmitter signals with the second set of transmitter electrodes during a second period, wherein the first period and the second period are non-overlapping, wherein, during the first period, each of the first plurality of transmitter signals is based on a different sequence of a code, and, during the second period, each of the second plurality of transmitter signals is based on a different sequence of the code, wherein the code comprises a set of mathematically independent sequences and has a size equal to the size of the first set of transmitter electrodes; receive first resulting signals during the first period and second resulting signals during the second period; and produce a plurality of demodulated signals based on the code, the first resulting signals, and the second resulting signals, and to determine positional information for an input object in a sensing region of the input device based on the demodulated signals. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of capacitive sensing, the method comprising:
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simultaneously transmitting a first plurality of transmitter signals with a first set of transmitter electrodes during a first period, and simultaneously transmitting a second plurality of transmitter signals with a second set of transmitter electrodes during a second period, wherein the first set of transmitter electrodes and second set of transmitter electrodes are disjoint and have different sizes, and the first period and the second period are non-overlapping;
wherein, during the first period, each of the first plurality of transmitter signals is based on a different sequence of a code, and, during the second period, each of the second plurality of transmitter signals is based on a different sequence of the code, the code comprising a set of mathematically independent sequences having a size equal to the size of the first set of transmitter electrodes;receiving first resulting signals during the first period and second resulting signals during the second period; and producing a plurality of demodulated signals based on the code, the first resulting signals, and the second resulting signals, and to determine positional information for an input object in a sensing region of the input device based on the demodulated signals. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification