Abstract: A line output converter (LOC) combined with a microprocessor to sense LOC output signal strength and respond to usefully high levels by generating a trigger to turn on an amplifier that is receiving the LOC output signal. A short, first predetermined time is programmed into the microcontroller as a minimum time to sense high signal levels before activating the amplifier, in order to suppress transient signals. A longer, second predetermined time is programmed into the microcontroller as a minimum time to sense low signal levels before deactivating the amplifier. The predetermined boundary between a high and a low signal level is also programmed into the microcontroller and, as with the predetermined times, is established responsive to the characteristics of the particular LOC involved. In an embodiment, the LOC is a compact adjustable LOC located on the same PCB as the microcontroller.

Abstract: A line output converter (LOC) combined with a microprocessor to sense LOC output signal strength and respond to usefully high levels by generating a trigger to turn on an amplifier that is receiving the LOC output signal. A short, first predetermined time is programmed into the microcontroller as a minimum time to sense high signal levels before activating the amplifier, in order to suppress transient signals. A longer, second predetermined time is programmed into the microcontroller as a minimum time to sense low signal levels before deactivating the amplifier. The predetermined boundary between a high and a low signal level is also programmed into the microcontroller and, as with the predetermined times, is established responsive to the characteristics of the particular LOC involved. In an embodiment, the LOC is a compact adjustable LOC located on the same PCB as the microcontroller.

Abstract: A single knob for controlling at least an audio input signal to produce up to fourteen distinct results, plus one quiescent state, through axial translational states corresponding to: the knob being translationally biased out, pushed in, or pushed in and held; and rotational states corresponding to: rotationally biased to a first position, turned clockwise, turned clockwise and held, turned counterclockwise, and turned clockwise and held, and combinations of those translational and rotational states. The single knob controller can be linked to a Bluetooth device for controlling such device. Some applications include automotive electronics and audio systems generally.

Abstract: A single knob for controlling at least an audio input signal to produce up to fourteen distinct results, plus one quiescent state, through axial translational states corresponding to: the knob being translationally biased out, pushed in, or pushed in and held; and rotational states corresponding to: rotationally biased to a first position, turned clockwise, turned clockwise and held, turned counterclockwise, and turned clockwise and held, and combinations of those translational and rotational states. The single knob controller can be linked to a Bluetooth device for controlling such device. Some applications include automotive electronics and audio systems generally.