Patent ID: 11868560
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A sensor device comprising:
first sensors;
second sensors forming capacitance with the first sensors;
a multi-frequency generator generating a first frequency signal and a second frequency signal having different frequencies;
a sensor transmitter supplying first driving signals based on the first frequency signal to first sensors of a first group among the first sensors and simultaneously supplying second driving signals based on the second frequency signal to first sensors of a second group among the first sensors; and
a sensor receiver simultaneously receiving sensing signals from the second sensors,
wherein the sensor receiver includes:
a charge amplifier having an input terminal coupled to at least one of the second sensors; and
a band pass filter receiving an output signal of the charge amplifier and receiving at least one frequency signal from the multi-frequency generator,
wherein the band pass filter receives at least one of: (i) a center frequency signal of the first frequency signal and the second frequency signal; or (ii) the first frequency signal and the second frequency signal.