Multi-function control knobs for multimedia systems of vehicles

1. A multimedia system for a vehicle comprising:

a processor; and

a multi-function control knob communicatively coupled to the processor, the multi-function control knob configured to provide control signals to the processor such that the multi-function control knob

operates in a volume control mode or a radio tune control mode;

switches between the volume control mode and the radio tune control mode in response to a double press of an area of the multi-function control knob in a direction in parallel with a central axis of the multi-function control knob, the double press being made to a same area on the multi-function control knob;

sends a first control signal to the processor in response to a single actuation of the multi-function control knob while operating in the volume control mode;

sends a second control signal to the processor in response to a single actuation of the multi-function control knob while operating in the radio tune control mode, wherein the first control signal and the second control signal are for controlling different multimedia operations;

sends a third control signal to the processor in response to a rotation of the multi-function control knob while operating in the volume control mode; and

sends a fourth control signal to the processor in response to a rotation of the multi-function control knob when operating in the radio tune control mode, wherein the third control signal and the fourth control signal are for controlling different multimedia operations.

2. The multimedia system of claim 1 , wherein the single actuation is a single press on the multi-function control knob.

3. The multimedia system of claim 1 , wherein the single actuation is a single touch on the multi-function control knob.

4. The multimedia system of claim 1 , wherein the multi-function control knob is positioned on an audio faceplate of the vehicle.

5. The multimedia system of claim 1 , wherein the multi-function control knob is positioned proximate to a transmission shift of the vehicle.

6. The multimedia system of claim 1 , wherein the first control signal is a signal for powering on or off a radio of the vehicle.

7. The multimedia system of claim 1 , wherein the second control signal is a signal for selecting a radio station.

8. The multimedia system of claim 1 wherein the third control signal is a signal for controlling a volume of the multimedia system.

9. The multimedia system of claim 1 , wherein the fourth control signal is a signal for tuning radio for the multimedia system.

10. The multimedia system of claim 1 , wherein the multi-function control knob comprises mode identification related to a mode of the multi-function control knob.

11. The multimedia system of claim 1 , wherein the multi-function control knob is configured to provide a tactile response when the multi-function control knob switches between the volume control mode and the radio tune control mode.

12. The multimedia system of claim 1 , wherein the multi-function control knob is configured to provide an audio response when the multi-function control knob switches between the volume control mode and the radio tune control mode.

13. The multimedia system of claim 1 , wherein the volume control mode is a volume control mode, and the radio tune control mode is one of a sound-effect control mode, a menu selecting mode, a media playing mode, a GPS navigation mode, a wiper control mode, a headlight control mode, heat, a ventilation and air conditioning (HVAC) control mode, an in-vehicle light control mode, and a camera mode.

14. A multimedia system for a vehicle comprising:

a processor; and

a multi-function control knob communicatively coupled to the processor, the multi-function control knob configured to provide control signals to the processor such that the multi-function control knob

operates in a volume control mode or a radio tune control mode;

switches from the volume control mode to the radio tune control mode in response to a predetermined period of press and hold of the multi-function control knob in a direction in parallel with a central axis of the multi-function control knob when the multi-function control knob operates in the volume control mode;

switches from the radio tune control mode to the volume control mode in response to the predetermined period of press and hold of the multi-function control knob in a direction in parallel with a central axis of the multi-function control knob when the multi-function control knob operates in the radio tune control mode;

sends a first control signal to the processor in response to a single actuation of the multi-function control knob while operating in the volume control mode;

sends a second control signal to the processor in response to a single actuation of the multi-function control knob while operating in the radio tune control mode, wherein the first control signal and the second control signal are different signals for controlling different multimedia operations;

sends a third control signal to the processor in response to rotation of the multi-function control knob while operating in the volume control mode; and

sends a fourth control signal to the processor in response to rotation of the multi-function control knob while operating in the radio tune control mode, wherein the third control signal and the fourth control signal are different signals for controlling different multimedia operations.

15. The multimedia system of claim 14 , wherein the multi-function control knob is positioned on a steering wheel of the vehicle.