Patent ID: 9176604
Filing Date: 2015-11-03
Classification: G06F

Abstract:
1. A stylus comprising: a stylus tip capable of receiving a stimulation signal from a touch sensitive device and further capable of transmitting a stylus stimulation signal to the touch sensitive device; a force sensor circuit capable of detecting a force applied to the stylus tip; an amplification circuit coupled to receive the stimulation signal from the stylus tip, the amplification circuit comprising a processor and an amplifier, the processor coupled to receive an output signal from the amplifier and capable of generating a gain signal, wherein the amplification circuit is capable of modulating the received stimulation signal to generate the stylus stimulation signal based on the gain signal and the force detected by the force sensor circuit; and a mixer circuit coupled to receive the gain signal and an output from the force sensor circuit and capable of controlling the amount of amplification applied to the received stimulation signal based on the output from the force sensor circuit and the gain signal.