Patent ID: 9134830
Filing Date: 2015-09-15
Classification: G01G,G06F

Abstract:
1. A method comprising: detecting, by a device, a presence of a measurement device in contact with a touch screen surface, wherein the measurement device comprises a first stylus, a second stylus, and communication circuitry; establishing, by the device, a communication channel with the communication circuitry of the measurement device; receiving over the communication channel, by the device, a first set of measurements from the measurement device when the first stylus and the second stylus of the measurement device are in contact with the touch screen surface of the device and no object is located on a measurement surface of the measurement device, wherein the first set of measurements comprise a first measurement of pressure exerted on the touch screen surface by the first stylus and a second measurement of pressure exerted on the touch screen surface by the second stylus; receiving, by the device, the second set of measurements from the measurement device when the first stylus and the second stylus of the measurement device are in contact with the touch screen surface and an object is located on the measurement surface, wherein the second set of measurements comprises a third measurement of pressure exerted on the touch screen surface by the first stylus and a fourth measurement of pressure exerted on the touch screen surface by the second stylus; subtracting the first measurement from the third measurement to obtain a first value representing a first change in pressure exerted on the touch screen surface by the object; subtracting the second measurement from the fourth measurement to obtain a second value representing a second change in pressure exerted on the touch screen surface by the object; determining, by the device, a weight of the object using the first value and the second value; and displaying the weight of the object on a display of the device.