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US 9,001,074 B2Granted
Methods and apparatus to determine position of an input object
AssigneeCypress Semiconductor Corporation
InventorsOleksandr Rohozin, Victor Kremin
Life of this patent
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Abstract
A method and apparatus receive a plurality of signal values, the plurality of signal values responsive to an input object. The method and apparatus calculate at least one signal ratio value using the plurality of signal values and determine a position of the input object using the at least one signal ratio value.
Claims22
A method comprising:
- receiving a plurality of signals respectively from a plurality of capacitive sensors, the plurality of signals responsive to an input object;
- wherein each of the plurality signals includes a plurality of signal values;
- calculating at least one signal ratio value using at least one signal, of the plurality of signals, which is selected based on a slope of the at least one signal;
- and
- determining a position of the input object using the at least one signal ratio value.
2 more elements
An apparatus comprising:
- a signal sensor configured to receive a plurality of signals respectively from a plurality of capacitive sensors, the plurality of signals responsive to an input object, wherein each of the plurality of signals includes a plurality of signal values;
- a signal ratio module coupled to the signal sensor;
- and
- a position module coupled with the signal ratio module, the signal ratio module configured to calculate at least one signal ratio value using at least one signal, of the plurality of signals, which is selected based on a slope of the at least one signal, the position module configured to determine a position of the input object using the at least one signal ratio value.
1 more element
A sensing system comprising:
- a processing device;
- and
- an input module coupled with the processing device, the processing device comprising:
- a signal sensor configured to receive a plurality of signals respectively from a plurality of capacitive sensors of the input module, the plurality of signals responsive to an input object, wherein each of the plurality of signals include a plurality of signals values;
- a signal ratio module coupled to the signal sensor;
- and
- a position module coupled with the signal ratio module, the signal ratio module configured to calculate at least one signal ratio value using at least one signal, of the plurality of signals, which is selected based on a slope of the at least one signal, the position module configured to determine a position of the input object using the at least one signal ratio value.
4 more elements
Dependencies are inferred from the claim text.