In some embodiments, the haptic feedback perceived by the user is caused by force being exerted by a haptic feedback component against a housing of the electronic device. As described herein, haptic feedback can involve the transformation, displacement, oscillation, vibration, or modification of a body of material (e.g., substrate) from an initial configuration to a modified configuration in order to provide feedback that can be perceived by a user. The components can further include a communications unit coupled to and capable of receiving the feedback instruction from the processor, where the communications unit responds to the feedback instruction by transmitting a feedback parameter to the electronic device such that a graphical output is presented at the display in accordance with the change in flexure.The wording is as dense as usual for a patent, but the meaning is clear: the iPad measures the amount of flex in the bristles, and uses that to effectively control the flow of ‘paint’ in the image.Flexible joints in the pencil could be used as alternative method of measuring the pressure applied to the screen.The patent also describes how haptic feedback could be used to provide artificial sensations from the use of different types of tip.As used herein, the term “haptic feedback” can refer to simulating a sensation of touch by applying force, vibrations, or motions that can be perceived by the nerves within the user’s appendages. The components can further include a processor in communication with the sensor and capable of receiving the detection signal, the processor capable of generating a feedback instruction that is based upon the change in flexure.
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