BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a front view of an electric guitar.
FIG. 2 shows an electric guitar interconnected to an amplifier.
FIG. 3 shows a schematic diagram of an exemplary electric-guitar circuit.
FIG. 4A shows a schematic diagram of the electric-guitar circuit shown in FIG. 3 with an interconnected enhanced knob that includes a tuner function and that represents one embodiment of the present invention.
FIG. 4B shows a schematic diagram of the electric-guitar circuit shown in FIG. 3 with a volume knob replaced with an enhanced knob that includes a tuner function and that represents one embodiment of the present invention.
FIG. 5 shows an exploded view of an enhanced knob that includes a tuner function and that represents one embodiment of the present invention.
FIG. 6A shows a side view of the enhanced knob shown in FIG. 4 that represents one embodiment of the present invention.
FIG. 6B shows a side view of a knob cap placed over the enhanced knob shown in FIG. 5A that represents one embodiment of the present invention.
FIG. 7A shows a front, exploded view of an enhanced knob that represents one embodiment of the present invention.
FIG. 7B shows a rear, exploded view of the enhanced knob shown in FIG. 7A that represents one embodiment of the present invention.
FIG. 8 shows an upside down, top view of a tuner display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 9 shows an upside down, top view of a first guitar-tuner display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 10 shows an upside down, top view of a second guitar-tuner display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 11 shows an upside down, top view of a bass-tuner display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 12 shows an upside down, top view of a chromatic-tuner display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 13 shows an upside down, top view of a liquid crystal display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 14 shows a top view of a strobe-ring display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 15 shows a schematic diagram of a tuner circuit for an enhanced knob that represents one embodiment of the present invention.
FIG. 16A shows a control-flow diagram for a tuning operation by a processor in an enhanced knob that represents one embodiment of the present invention.
FIG. 16B shows a control-flow diagram for a tuning operation by a processor in an enhanced knob with a strobe-ring display that represents one embodiment of the present invention.
FIG. 17 shows a schematic diagram of an instrument circuit with a volume knob replaced with an enhanced knob with a metronome function that represents one embodiment of the present invention.
FIG. 18 shows an upside down, top view of a first metronome display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 19 shows an upside down, top view of a second metronome display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 20 shows an upside down, top view of a third metronome display on a display ring for an enhanced knob that represents one embodiment of the present invention.
FIG. 21 shows an upside down, top view of the third metronome display shown in FIG. 20 with an accent controller that represents one embodiment of the present invention.
FIG. 22 shows an exploded view of an enhanced knob with a metronome function that represents one embodiment of the present invention.
FIG. 23 shows a control-flow diagram for a metronome operation by a processor in an enhanced knob that represents one embodiment of the present invention.
FIG. 24 shows a schematic diagram of an instrument circuit with a volume knob replaced with an enhanced knob with a visual-display function that represents one embodiment of the present invention.
FIG. 25 shows a light display on a display ring for an enhanced knob that represents one embodiment of the present invention.