Patent ID: 11928271
Assignee: SYNAPTICS INCORPORATED
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC B  G

Claim 8:
9. A processing system for determining a rotational direction of a knob interface, comprising:
one or more processors; and
a non-transitory computer-readable medium having processor-executable instructions stored thereon, the processor-executable instructions, when executed by the one or more processors, facilitating performance of the following:
obtaining, using a set of rotation electrodes that interact with the knob interface, first resulting signals and second resulting signals, wherein obtaining the first resulting signals and the second resulting signals comprises:
providing, to the set of rotation electrodes and one or more additional electrodes, sensing signals, wherein the set of rotation electrodes are in electrical contact with a peripheral ring comprising alternating conductive regions and non-conductive regions, and wherein the one or more additional electrodes are not in electrical contact with the peripheral ring;
obtaining, from the set of rotation electrodes, the first resulting signals associated with the sensing signals; and
obtaining, from the one or more additional electrodes, the second resulting signals associated with the sensing signals;

determining an initial state of the knob interface using the first resulting signals and the second resulting signals;
obtaining, using the set of rotation electrodes, third resulting signals indicating a first rotational state of the knob interface, based at least in part on the knob interface being rotated from the initial state to the first rotational state;
determining the rotational direction of the knob interface using the first resulting signals, the second resulting signals, and the third resulting signals; and
adjusting a setting using the determined rotational direction.