Patent ID: 8786279

Claim:
An electronic circuit, comprising: a plurality of sensors configured to generate a corresponding plurality of sensor signals; a control signal generator configured to generate a plurality of control signals, wherein each control signal comprises a first state and a second different state at different times, wherein, at a first time, a first selected set of the plurality of control signals is in the first state and a second selected set of the plurality of control signals different than the first selected set is in the second state, and wherein, at a second different time, a third selected set of the plurality of control signals is in the first state and a fourth selected set of the plurality of control signals different than the third selected set is in the second state; and a combining circuit comprising: a plurality of switching circuits, wherein each switching circuit is coupled to receive at the same time a respective one of the plurality of sensor signals and coupled to receive a respective one of the plurality of control signals, wherein each switching circuit is configured to generate, at the same time, a respective switching circuit output signal, resulting in a plurality of switching circuit output signals, the respective switching circuit output signal being representative of either a non-inverted or an inverted respective one of the plurality of sensor signals depending upon the first state or the second state of a respective one of the plurality of control signals, resulting in the plurality of switching circuit output signals being comprised of at least one switching circuit output signal representative of an inverted first one of the plurality of sensor signals and at least one switching circuit output signal representative of a non-inverted second different one of the plurality of sensor signals at the same time; and a summing circuit coupled to receive the plurality of switching circuit output signals from the plurality of switching circuits and configured to generate a summed output signal corresponding to a sum of the switching circuit output signals.