CPC G06F 1/3203 (2013.01) [G06F 3/03545 (2013.01); G06F 3/0441 (2019.05); G06F 3/0442 (2019.05)] | 20 Claims |
1. A stylus, comprising:
one or more electrodes; and
one or more computer-readable non-transitory storage media embodying logic for transmitting signals wirelessly to a device through a touch-sensor of the device;
the stylus having:
a first power mode in which components of the stylus for receiving signals from the device are powered off and components of the stylus for transmitting signals to the device are powered off;
a second power mode in which the components of the stylus for receiving drive signals transmitted by drive electrodes of the device and used by the stylus to detect the device are periodically switched between a powered on state and a powered off state at a first duty cycle and the components of the stylus for transmitting signals to the device are powered off; and
a third power mode in which the components of the stylus for receiving the drive signals transmitted by the drive electrodes of the device are powered on at a second duty cycle that is higher than the first duty cycle and the components of the stylus for transmitting stylus signals to the device are powered on to transmit the stylus signals;
wherein the stylus in the second mode, in response to detecting the drive signals transmitted by the drive electrodes of the device, transitions from the second mode to the third mode.
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