Touch location determination involving multiple touch location processes
Touch location determination approaches involving a plurality of touch location techniques are described. Each touch location technique is capable of independently determining a location of a touch within a touch area of the touch sensitive device. The touch location determination made by at least one touch location technique is enhanced using touch location information associated with the touch acquired from one or more other touch location techniques. One touch location technique may use a different type of sensor, signal, and/or algorithm from the one or more other touch location techniques.
1. A touch sensitive device, comprising:
a plurality of touch detectors, comprising:
one or more first touch detectors configured to determine a touch location of a touch on a touch panel using one or more first touch location techniques; and
one or more second touch detectors configured to acquire touch location information using one or more second touch location techniques; and
processing circuitry coupled to the one or more first touch detectors and the one or more second touch detectors, the processing circuitry configured to provide an enhanced accuracy touch location determination based on a combination of the touch location determined by the one or more first touch detectors and the touch location information acquired using the one or more second touch detectors.
2. The device of claim 1 , wherein the one or more first touch detectors are configured to determine the touch location with a first degree of precision and the one or more second touch detectors are configured to determine the touch location with a second degree of precision.
3. The device of claim 1 , wherein the one or more first touch detectors are configured to determine the touch location with a first degree of accuracy and the one or more second touch detectors are configured to determine the touch location with a second degree of accuracy.
4. The device of claim 1 , wherein the processing circuitry is configured to adjust data acquired by the one or more first touch detectors using the touch location information acquired by the one or more second touch detectors.
5. The device of claim 1 , wherein the one or more first touch detectors comprise a touch sensor having one or more first characteristics and the one or more second touch detectors comprise one or more touch sensors having one or more second characteristics different from the one or more first characteristics.
6. The device of claim 1 , wherein the one or more first touch detectors use a first touch detection algorithm having one or more first characteristics and the one or more second touch detectors use one or more second touch detection algorithms having one or more second characteristics different from the one or more first characteristics.
7. The device of claim 1 , wherein the one or more first touch detectors each comprise a first touch sensor having one or more characteristics and the one or more second touch detectors each comprise a second touch sensor having the one or more characteristics and the one or more first touch detectors use a touch detection algorithm having one or more first characteristics and the one or more second touch detectors use one or more second touch detection algorithms having one or more second characteristics different from the one or more first characteristics.
8. The device of claim 1 , wherein the processing circuitry uses the touch location information acquired by the one or more second touch detectors to correct for one or more errors in the touch location determined by the one or more first touch detectors in order to provide the enhanced accuracy touch location determination.