Systems and methods for determining user input using simultaneous transmission from multiple electrodes
First Claim
1. A processing system for an input device comprising:
- a sensor module comprising sensor circuitry, the sensor module configured to;
simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode, wherein the first transmitter signal corresponds to an upper sideband and the second transmitter signal corresponds to a lower sideband; and
receive a resulting signal with a receiver electrode, wherein the resulting signal comprises effects corresponding to both the first transmitter signal and the second transmitter signal; and
a determination module configured to;
demodulate the resulting signal to produce a first output signal and a second output signal;
determine positional information for an input object based on at least one of the first output signal and the second output signal.
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Accused Products
Abstract
The embodiments described herein provide improved sensor devices. In one embodiment, an input device comprises a processing system, transmitter sensor electrodes, and a receiver sensor electrode. The processing system is configured to simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode. In one embodiment the first transmitter signal corresponds to an upper sideband and the second transmitter signal corresponds to a lower sideband. In another embodiment the first transmitter signal is in quadrature with the second transmitter signal. The processing system is further configured to receive a resulting signal with a receiver electrode, the resulting signal comprising effects corresponding to both the first transmitter signal and the second transmitter signal. The determination module is configured to demodulate the resulting signal to produce a first output signal and a second output signal and to determine positional information.
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Citations
23 Claims
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1. A processing system for an input device comprising:
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a sensor module comprising sensor circuitry, the sensor module configured to; simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode, wherein the first transmitter signal corresponds to an upper sideband and the second transmitter signal corresponds to a lower sideband; and receive a resulting signal with a receiver electrode, wherein the resulting signal comprises effects corresponding to both the first transmitter signal and the second transmitter signal; and a determination module configured to; demodulate the resulting signal to produce a first output signal and a second output signal; determine positional information for an input object based on at least one of the first output signal and the second output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A processing system for an input device comprising:
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a sensor module comprising sensor circuitry, the sensor module configured to; simultaneously transmit a first transmitter signal with a first transmitter electrode and a second transmitter signal with a second transmitter electrode, wherein the first transmitter signal is in quadrature with the second transmitter signal; and receive a resulting signal with a receiver electrode, wherein the resulting signal comprises effects corresponding to both the first transmitter signal and the second transmitter signal; and a determination module configured to; demodulate the resulting signal to produce a first output signal and a second output signal; determine positional information for an input object based on at least one of the first output signal and the second output signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An input device comprising:
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a first transmitter electrode and a second transmitter electrode; a receiver electrode; a processing system operatively coupled to the first transmitter electrode, the second transmitter electrode, and the receiver electrode, the processing system configured to; simultaneously transmit a first transmitter signal with the first transmitter electrode, a second transmitter signal with the second transmitter electrode, wherein the first transmitter signal corresponds to an upper sideband, and wherein the second transmitter signal corresponds to a lower sideband; receive a resulting signal with the receiver electrode, wherein the resulting signal comprises effects corresponding to each of the first transmitter signal and the second transmitter signal; demodulate the resulting signal to produce a first output signal and a second output signal; determine a first measurement of change of capacitive coupling between the first transmitter electrode and the receiver electrode based at least in part on first output signal; determine a second measurement of change of capacitive coupling between the second transmitter electrode and the receiver electrode based at least in part on the second output signal; and determine positional information for an input object based on at least in part the first measurement and the second measurement. - View Dependent Claims (18, 19, 20, 21)
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22. An input device comprising:
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a first transmitter electrode, a second transmitter electrode, a third transmitter electrode, and a fourth transmitter electrode; a receiver electrode; a processing system operatively coupled to the first transmitter electrode, the second transmitter electrode, the third transmitter electrode, the fourth transmitter electrode, and the receiver electrode, the processing system configured to; simultaneously transmit a first transmitter signal with the first transmitter electrode, a second transmitter signal with the second transmitter electrode, a third transmitter signal with the third transmitter electrode, and a fourth transmitter signal with the fourth transmitter electrode, wherein the first transmitter signal and the third transmitter signal correspond to an upper sideband, and the second transmitter signal and the fourth transmitter signal corresponds to a lower sideband, and wherein the first transmitter signal is in quadrature with the third transmitter signal and the second transmitter signal is in quadrature with the fourth transmitter signal; receive a resulting signal with the receiver electrode, wherein the resulting signal comprises effects corresponding to each of the first transmitter signal, the second transmitter signal, the third transmitter signal and the fourth transmitter signal; demodulate the resulting signal to produce a first output signal, a second output signal, a third output signal, and a fourth output signal; and determine a first measurement of change of capacitive coupling between the first transmitter electrode and the receiver electrode based at least in part on first output signal; determine a second measurement of change of capacitive coupling between the second transmitter electrode and the receiver electrode based at least in part on the second output signal; determine a third measurement of change of capacitive coupling between the third transmitter electrode and the receiver electrode based at least in part on third output signal; determine a fourth measurement of change of capacitive coupling between the fourth transmitter electrode and the receiver electrode based at least in part on the fourth output signal; determine positional information for an input object based on at least in part the first measurement, the second measurement, the third measurement and the fourth measurement. - View Dependent Claims (23)
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Specification