Knob apparatus and operation method thereof
A knob apparatus includes a touch panel, a touch-sensing controller, and a knob. The touch panel has multiple touch-sensing electrodes. The touch-sensing controller is coupled to the touch-sensing electrodes of the touch panel. The touch-sensing controller detects a touch event of the touch panel through the touch-sensing electrodes. The knob has a base and a knob cap. The knob cap is pivoted on the base. The base is attached to the touch panel. Multiple conductive electrodes are disposed at different positions of the base. The touch-sensing controller detects the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base.
1. A knob apparatus, comprising:
a touch panel, having a plurality of touch-sensing electrodes;
a touch-sensing controller, coupled to the touch-sensing electrodes of the touch panel, configured to detect a touch event of the touch panel through the touch-sensing electrodes; and
a knob, having a base and a knob cap, wherein the knob cap is pivoted on the base, the base is attached to the touch panel, a plurality of conductive electrodes are disposed at different positions of the base, and the touch-sensing controller detects the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base,
wherein the knob cap comprises:
a hand contact portion, wherein when the knob cap is operated by a hand, the hand contact portion is adapted to contact the hand; and
an electrical path, wherein a first end of the electrical path is coupled to the hand contact portion, and a second end of the electrical path is selectively coupled to one or more of the conductive electrodes of the base based on rotation of the knob cap on the base.
2. The knob apparatus according to claim 1 , wherein when the hand contacts the hand contact portion and the second end of the electrical path is selectively coupled to a first conductive electrode of the conductive electrodes of the base, the touch-sensing controller detects the touch event of the hand through the touch-sensing electrodes, the first conductive electrode, the electrical path, and the hand contact portion.
3. The knob apparatus according to claim 1 , wherein the touch-sensing controller detects whether the touch event occurs at the positions of the conductive electrodes of the base through the touch-sensing electrodes, and the touch-sensing controller determines the rotation direction of the knob cap on the base based on a sequence of occurrence of the touch event at the conductive electrodes.
4. The knob apparatus according to claim 3 , wherein the touch-sensing controller converts a detection result of the conductive electrodes of the base into a current code, the touch-sensing controller compares the current code with a previous code to determine whether the knob cap has been rotated, and updates the previous code based on the current code.
5. The knob apparatus according to claim 4 , wherein the current code indicates that the touch event occurs at a single electrode among the conductive electrodes of the base.
6. The knob apparatus according to claim 4 , wherein the current code indicates that the touch event occurs at a plurality of adjacent electrodes among the conductive electrodes of the base.
7. The knob apparatus according to claim 4 , wherein the touch-sensing controller determines that the rotation direction of the knob cap is clockwise when the current code and the previous code indicate that the sequence of occurrence of the touch event at the conductive electrodes is a first sequence, and the touch-sensing controller determines that the rotation direction of the knob cap is counterclockwise when the current code and the previous code indicate that the sequence of occurrence of the touch event at the conductive electrodes is a second sequence different from the first sequence.
8. The knob apparatus according to claim 4 , wherein the touch-sensing controller checks whether the current code is anomalous, and
when the current code is anomalous, the touch-sensing controller repairs the current code based on the previous code.
9. A knob apparatus, comprising:
a touch panel, having a plurality of touch-sensing electrodes;
a touch-sensing controller, coupled to the touch-sensing electrodes of the touch panel, configured to detect a touch event of the touch panel through the touch-sensing electrodes; and
a knob, having a base and a knob cap, wherein the knob cap is pivoted on the base, the base is attached to the touch panel, a plurality of conductive electrodes are disposed at different positions of the base, and the touch-sensing controller detects the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base,
wherein the knob cap comprises:
a pressing member, wherein when the hand presses the knob cap, the pressing member is adapted to electrically connect the conductive electrodes of the base,
wherein the touch-sensing controller detects, through the touch-sensing electrodes, whether the touch event occurs at the same time at the conductive electrodes of the base to determine whether the knob cap has been pressed.
10. A knob apparatus, comprising:
a touch panel, having a plurality of touch-sensing electrodes;
a touch-sensing controller, coupled to the touch-sensing electrodes of the touch panel, configured to detect a touch event of the touch panel through the touch-sensing electrodes; and
a knob, having a base and a knob cap, wherein the knob cap is pivoted on the base, the base is attached to the touch panel, a plurality of conductive electrodes are disposed at different positions of the base, and the touch-sensing controller detects the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base,
wherein a common electrode is further disposed on the base, the touch-sensing controller provides a touch driving signal to the common electrode of the base of the knob through at least one of the touch-sensing electrodes of the touch panel, the knob cap comprises an electrical path, a first end of the electrical path is coupled to the common electrode, a second end of the electrical path is selectively coupled to one or more of the conductive electrodes of the base based on rotation of the knob cap on the base, and the touch-sensing controller detects the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn the rotation direction of the knob cap on the base.
11. The knob apparatus according to claim 10 , wherein when the second end of the electrical path is selectively coupled to a first conductive electrode of the conductive electrodes of the base, the touch-sensing controller detects the touch driving signal of the first conductive electrode through the touch-sensing electrodes.
12. An operating method of a knob apparatus, comprising:
disposing a plurality of touch-sensing electrodes on a touch panel, wherein the touch-sensing electrodes are configured to detect a touch event of the touch panel;
attaching a knob to the touch panel, wherein the knob has a base and a knob cap, and the knob cap is pivoted on the base;
disposing a plurality of conductive electrodes at different positions of the base of the knob; and
detecting the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base,
wherein the knob cap comprises a hand contact portion and an electrical path, the hand contact portion is adapted to contact a hand when the knob cap is operated by the hand, a first end of the electrical path is coupled to the hand contact portion, and a second end of the electrical path is selectively coupled to one or more of the conductive electrodes of the base based on rotation of the knob cap on the base.
13. The operation method according to claim 12 , further comprising:
detecting the touch event of the hand through the touch-sensing electrodes, a first conductive electrode of the conductive electrodes of the base, the electrical path, and the hand contact portion when the hand contacts the hand contact portion and the second end of the electrical path is selectively coupled to the first conductive electrode.
14. The operation method according to claim 12 , further comprising:
detecting whether the touch event occurs at the positions of the conductive electrodes of the base through the touch-sensing electrodes; and
determining the rotation direction of the knob cap on the base based on a sequence of occurrence of the touch event at the conductive electrodes.
15. The operation method according to claim 14 , further comprising:
converting a detection result of the conductive electrodes of the base into a current code;
comparing the current code with a previous code to determine whether the knob cap has been rotated; and
updating the previous code based on the current code.
16. The operating method according to claim 15 , wherein the current code indicates that the touch event occurs at a single electrode among the conductive electrodes of the base.
17. The operation method according to claim 15 , wherein the current code indicates that the touch event occurs at a plurality of adjacent electrodes among the conductive electrodes of the base.
18. The operation method according to claim 15 , further comprising:
determining that the rotation direction of the knob cap is clockwise when the current code and the previous code indicate that the sequence of occurrence of the touch event at the conductive electrodes is a first sequence; and
determining that the rotation direction of the knob cap is counterclockwise when the current code and the previous code indicate that the sequence of occurrence of the touch event at the conductive electrodes is a second sequence different from the first sequence.
19. The operation method according to claim 15 , further comprising:
checking whether the current code is anomalous; and
repairing the current code based on the previous code when the current code is anomalous.
20. An operating method of a knob apparatus, comprising:
disposing a plurality of touch-sensing electrodes on a touch panel, wherein the touch-sensing electrodes are configured to detect a touch event of the touch panel;
attaching a knob to the touch panel, wherein the knob has a base and a knob cap, and the knob cap is pivoted on the base;
disposing a plurality of conductive electrodes at different positions of the base of the knob; and
detecting the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base,
wherein the knob cap comprises a pressing member, the pressing member is adapted to electrically connect the conductive electrodes of the base when the hand presses the knob cap, and the operating method further comprises:
detecting, through the touch-sensing electrodes, whether the touch event occurs at the same time at the conductive electrodes of the base to determine whether the knob cap has been pressed.
21. An operation method of a knob apparatus, comprising:
disposing a plurality of touch-sensing electrodes on a touch panel, wherein the touch-sensing electrodes are configured to detect a touch event of the touch panel;
attaching a knob to the touch panel, wherein the knob has a base and a knob cap, and the knob cap is pivoted on the base;
disposing a plurality of conductive electrodes at different positions of the base of the knob; and
detecting the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn a rotation direction of the knob cap on the base,
wherein a common electrode is further disposed on the base, and the operation method further comprises:
providing a touch driving signal to the common electrode of the base of the knob through at least one of the touch-sensing electrodes of the touch panel, wherein the knob cap comprises an electrical path, a first end of the electrical path is coupled to the common electrode, and a second end of the electrical path is selectively coupled to one or more of the conductive electrodes of the base based on rotation of the knob cap on the base; and
detecting the conductive electrodes of the base of the knob through the touch-sensing electrodes of the touch panel to learn the rotation direction of the knob cap on the base.
22. The operation method according to claim 21 , further comprising:
detecting the touch driving signal of a first conductive electrode of the conductive electrodes of the base through the touch-sensing electrodes when the second end of the electrical path is selectively coupled to the first conductive electrode.