Device and method for interference avoidance in an input device
First Claim
1. An input device comprising:
- a plurality of sensor electrodes; and
a processing system coupled to the plurality of sensor electrodes, the processing system configured to;
determine a relative ranking for transmitting a plurality of transmitter signals based on an amount of background interference for each transmitter signal of the plurality of transmitter signals, wherein each transmitter signal of the plurality of transmitter signals comprises a waveform having a set of waveform characteristics that differ from the set of waveform characteristics of any other transmitter signal of the plurality of transmitter signals;
transmit, over a sensor electrode from the plurality of sensor electrodes, a first transmitter signal of the plurality of transmitter signals using the relative ranking;
determine an amount of input object coupled interference in the first transmitter signal;
select, using the amount of the input object coupled interference, a second transmitter signal from the relative ranking; and
transmit, over the sensor electrode, the second transmitter signal.
3 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods are provided that facilitate improved interference avoidance performance. The devices and methods determine a relative ranking for a plurality of transmitter signals based on a first class of interference for each transmitter signal of the plurality of transmitter signals. The devices and methods transmit a first transmitter signal of the plurality of transmitter signals with a sensor electrode of the plurality of sensor electrodes. The first transmitter signal is selected based on the relative ranking for the plurality of transmitter signals. The devices and methods shift from transmitting the first transmitter signal to transmitting a second transmitter signal of the plurality of transmitter signals with the sensor electrode is based on an amount of a second class of interference in the first transmitter signal. The second transmitter signal is selected based on the relative ranking for the plurality of transmitter signals.
-
Citations
14 Claims
-
1. An input device comprising:
-
a plurality of sensor electrodes; and a processing system coupled to the plurality of sensor electrodes, the processing system configured to; determine a relative ranking for transmitting a plurality of transmitter signals based on an amount of background interference for each transmitter signal of the plurality of transmitter signals, wherein each transmitter signal of the plurality of transmitter signals comprises a waveform having a set of waveform characteristics that differ from the set of waveform characteristics of any other transmitter signal of the plurality of transmitter signals; transmit, over a sensor electrode from the plurality of sensor electrodes, a first transmitter signal of the plurality of transmitter signals using the relative ranking; determine an amount of input object coupled interference in the first transmitter signal; select, using the amount of the input object coupled interference, a second transmitter signal from the relative ranking; and transmit, over the sensor electrode, the second transmitter signal. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A processing system configured for interference avoidance within a capacitive sensor device, the processing system comprising:
-
a ranking module configured to determine a relative ranking for transmitting a plurality of transmitter signals based on an amount of background interference for each transmitter signal of the plurality of transmitter signals, wherein each transmitter signal of the plurality of transmitter signals having a set of waveform characteristics that differ from the set of waveform characteristics of any other transmitter signal of the plurality of transmitter signals; and transmitter circuitry configured to; transmit, over a first sensor electrode from a plurality of sensor electrodes, a first transmitter signal of the plurality of transmitter signals using the relative ranking; determine an amount of input object coupled interference in the first transmitter signal; select, using the amount of the input object coupled interference, a second transmitter signal from the relative ranking; and transmit, over the first sensor electrode, the second transmitter signal. - View Dependent Claims (7, 8, 9)
-
-
10. A method of interference avoidance within a capacitive sensor device, the method comprising:
-
determining a relative ranking for transmitting a plurality of transmitter signals based on an amount of background interference for each transmitter signal of the plurality of transmitter signals, wherein each transmitter signal of the plurality of transmitter signals having a set of waveform characteristics that differ from the set of waveform characteristics of any other transmitter signal of the plurality of transmitter signals; transmitting, over a first sensor electrode, a first transmitter signal of the plurality of transmitter signals using the relative ranking; determining an amount of input object coupled interference in the first transmitter signal; selecting, using the amount of the input object coupled interference, a second transmitter signal from the relative ranking; and transmitting, over the first sensor electrode, the second transmitter signal. - View Dependent Claims (11, 12, 13, 14)
-
Specification