Patent ID: 11861107
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 19:
20. A driving method of an input sensor comprising:
charging a first voltage in a first capacitor through a first diode connected in a forward direction;
outputting a first compensation voltage charged in the first capacitor as a first compensation digital signal;
storing a first threshold value obtained by subtracting a first voltage value defined as a digital value of the first voltage from the first compensation digital signal;
charging a second voltage lower than the first voltage in a second capacitor through a second diode connected in a reverse direction;
outputting a second compensation voltage charged in the second capacitor as a second compensation digital signal;
storing a second threshold value obtained by subtracting a second voltage value defined as a digital value of the second voltage from the second compensation digital signal;
charging a positive-polarity voltage of an amplified input voltage in the first capacitor through the first diode;
discharging the first capacitor and the second capacitor to a reference voltage;
outputting a first charging voltage charged in the first capacitor as a first digital signal;
subtracting the first threshold value from the first digital signal and outputting a result of the subtraction;
charging a negative-polarity voltage of the amplified input voltage in the second capacitor through the second diode;
outputting a second charging voltage charged in the second capacitor as a second digital signal; and
subtracting the second threshold value from the second digital signal and outputting a result of the subtraction.