Touch detection device and method of detecting touch
AssigneeSamsung Electronics Co., Ltd.
InventorsSANG-PIL NAM, KYUNG-HOON LEE, MICHAEL CHOI
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Abstract
A touch detection device and a method of detecting a touch employ: a current-to-voltage converter configured to convert a reception signal received from a touch panel into a sensing signal, and further configured to be periodically reset for a first time period in response to a reset signal; a digital-to-analog converter configured to convert an analog signal based on the sensing signal into a first digital output signal, and a controller configured to generate a second digital output signal based on the first digital output signal by performing data interpolation on a first portion of the first digital output signal corresponding to the first time period.
Claims24
A touch detection device, comprising:
- a current-to-voltage converter configured to convert a reception signal received from a touch panel into a sensing signal, and further configured to be periodically reset for a first time period in response to a reset signal;
- an analog-to-digital converter configured to convert an analog signal, generated based on the sensing signal, into a first digital output signal;
- and
- a controller configured to generate a second digital output signal based on the first digital output signal by performing data interpolation on a first portion of the first digital output signal, where the first portion of the first digital output signal corresponds to the first time period.
(canceled)
(canceled)
A touch detection device for processing a reception signal that varies with a touch of a pointer on a touch panel, the touch detection device comprising:
- an analog front end configured to generate a first output signal by converting and amplifying the reception signal, wherein the analog front end is periodically reset in response to a reset signal to generate the first output signal having non-continuous data values;
- and
- a controller configured to generate a second output signal having continuous data values by interpolating a non-continuous period of the first output signal having the non-continuous data values, based on data values of a continuous period, and further configured to detect a frequency of the second output signal.
18-20. (canceled)
A method of detecting a touch by processing a reception signal that varies with a touch of a pointer on a touch panel, the method comprising:
- generating an output signal, based on the reception signal, wherein the output signal has data values corresponding to a variation of the reception signal;
- generating a reconstructed output signal by interpolating at least one data value of a second period of the output signal, between a first period of the output signal and a third period of the output signal, based on a data value of the first period and a data value of the third period;
- and
- detecting a magnitude and frequency of the reconstructed output signal.
26-30. (canceled)
Dependencies are inferred from the claim text.