Signal noise ratio control system and method thereof
First Claim
Patent Images
1. A signal-noise ratio control system for reducing noise interference, the signal-noise ratio control system comprising:
- a touch sensor driven by a driving signal and outputting an analog signal according to a plurality of touch statuses;
a touch controller which generates the driving signal and provides a divided voltage according to the analog signal; and
a level shifter which adjusts a voltage level of the driving signal according to a voltage level of the divided voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
A signal-noise ratio control system which reduces noise interference includes a touch sensor, a touch controller, and a level shifter. The touch sensor is driven by a driving signal and outputs an analog signal based on a touch situation. The touch controller generates the driving signal and provides a divided voltage based on the analog signal. The level shifter adjusts a voltage level of the driving signal based on a voltage level of the divided voltage.
-
Citations
10 Claims
-
1. A signal-noise ratio control system for reducing noise interference, the signal-noise ratio control system comprising:
-
a touch sensor driven by a driving signal and outputting an analog signal according to a plurality of touch statuses; a touch controller which generates the driving signal and provides a divided voltage according to the analog signal; and a level shifter which adjusts a voltage level of the driving signal according to a voltage level of the divided voltage. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method which controls a signal-noise ratio for reducing noise interference comprising the steps of:
-
converting an analog signal into a plurality of original digital signals; analyzing the original digital signals; determining whether a voltage level of a driving signal needs changing according to the analyzing of the original digital signals; selecting a new divided voltage when the voltage level of the driving signal needs changing; adjusting the voltage level of the driving signal according to the new divided voltage or an original divided voltage; and driving a touch sensor with the driving signal. - View Dependent Claims (8, 9, 10)
-
Specification