Patent ID: 9608848
Date: 2017-03-28
CPC Classifications: H04B,H04L

Claim:
1. A data transmitter comprising: a set of vibration motors comprising a first vibration motor to generate first symbols along a first axis at a first frequency and a second vibration motor to generate second symbols along a second axis at a second frequency, the first axis being substantially orthogonal to the second axis; a switch coupled to the set of vibration motors, the switch to regulate voltage from a direct-current (DC) power supply to the set of vibration motors; and a microcontroller coupled to the switch, the microcontroller to generate a pulse width modulation (PWM) signal with which to drive the switch and regulate the voltage to the set of vibration motors in a sinusoidal manner, to generate data as the first symbols and the second symbols from vibrations that form a series of bits from the set of vibration motors.