Emarker-equipped cable and power management method thereof

1. An eMarker device for use in a cable electrically connected between a first port and a second port, the cable including a configuration channel communication wire, and the eMarker device comprising:

a first eMarker disposed near the first port and including a first active protection module coupled to the configuration channel communication wire, wherein the first eMarker is electrically connected to a first power pin of the first port and a second power pin of the second port; and

a second eMarker disposed near the second port and including a second active protection module coupled to the configuration channel communication wire,

wherein either of the first active protection module and the second active protection module changes an electric characteristic of the configuration channel communication wire to have the first port detect a disconnecting status of the second port when a specified event happens,

wherein the first active protection module includes a first configuration channel communication circuit, and the second active protection module includes a second configuration channel communication circuit, wherein one of the configuration channel communication circuits is set to be operable while the other one of the configuration channel communication circuits is set to be disabled when a specific condition is satisfied, wherein the specific condition is successful acquisition of power from the first eMarker to the second eMarker.

2. The eMarker device according to claim 1 , wherein the specified event is an abnormal temperature event.

3. The eMarker device according to claim 1 , wherein the first active protection module includes a first active trigger circuit and a first protection circuit, wherein the first active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the first active trigger circuit is located and a supply characteristic of a bus power wire, and triggers the first protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port and having a power supply through the bus power wire suspended.

4. The eMarker device according to claim 1 , wherein the second active protection module includes a second active trigger circuit and a second protection circuit, wherein the second active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the second active trigger circuit is located, and triggers the second protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port.

5. The eMarker device according to claim 1 , wherein the second active protection module includes a second active trigger circuit and a second protection circuit, wherein the second active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the second active trigger circuit is located and a supply characteristic of a bus power wire, and triggers the second protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port.

6. The eMarker device according to claim 1 , wherein the first and second configuration channel communication circuits are set in a manner that when a specific condition is satisfied, the configuration channel communication circuit is operable, and when the specific condition is dissatisfied, the configuration channel communication circuit is disabled, wherein the specific condition is normal connection to the first power pin of the first port and the second power pin of the second port.

7. The eMarker device according to claim 1 , wherein the first and second configuration channel communication circuits are set in a manner that when a specific condition is dissatisfied, the configuration channel communication circuit is operable, and when the specific condition is satisfied, the configuration channel communication circuit is disabled, wherein the specific condition is normal connection to the first power pin of the first port and the second power pin of the second port.

8. The eMarker device according to claim 1 , wherein the second eMarker drains power from the first eMarker through an internal power line, or the second eMarker drains power through a bus power wire of the cable.

9. A cable to be electrically connected between a first port and a second port, comprising:

a configuration channel communication wire;

a first eMarker disposed near the first port and including a first active protection module coupled to the configuration channel communication wire, wherein the first eMarker is electrically connected to a first power pin of the first port and a second power pin of the second port; and

a second eMarker disposed near the second port and including a second active protection module coupled to the configuration channel communication wire,

wherein either of the first active protection module and the second active protection module changes an electric characteristic of the configuration channel communication wire to have the first port detect a disconnecting status of the second port when a specified event happens,

wherein the first active protection module includes a first configuration channel communication circuit, and the second active protection module includes a second configuration channel communication circuit, wherein one of the configuration channel communication circuits is set to be operable while the other one of the configuration channel communication circuits is set to be disabled when a specific condition is satisfied, wherein the specific condition is successful acquisition of power from the first eMarker to the second eMarker.

10. The cable according to claim 9 , wherein the specified event is an abnormal temperature event.

11. The cable according to claim 9 , wherein the first active protection module includes a first active trigger circuit and a first protection circuit, wherein the first active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the first active trigger circuit is located and a supply characteristic of a bus power wire, and triggers the first protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port and having a power supply through the bus power wire suspended.

12. The cable according to claim 9 , wherein the second active protection module includes a second active trigger circuit and a second protection circuit, wherein the second active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the second active trigger circuit is located, and triggers the second protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port.

13. The cable according to claim 9 , wherein the second active protection module includes a second active trigger circuit and a second protection circuit, wherein the second active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the second active trigger circuit is located and a supply characteristic of a bus power wire, and triggers the second protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port.

14. The cable according to claim 9 , the first and second configuration channel communication circuits are set in a manner that when a specific condition is satisfied, the configuration channel communication circuit is operable, and when the specific condition is dissatisfied, the configuration channel communication circuit is disabled, wherein the specific condition is normal connection to the first power pin of the first port and the second power pin of the second port.

15. The cable according to claim 9 , the first and second configuration channel communication circuits are set in a manner that when a specific condition is dissatisfied, the configuration channel communication circuit is operable, and when the specific condition is satisfied, the configuration channel communication circuit is disabled, wherein the specific condition is normal connection to the first power pin of the first port and the second power pin of the second port.

16. The cable according to claim 9 , wherein the second eMarker drains power from the first eMarker through an internal power line, or the second eMarker drains power through a bus power wire of the cable.

17. A power management method of a cable electrically connected between a first port and a second port, the cable comprising a configuration channel communication wire, and the method comprising:

changing an electric characteristic of the configuration channel communication wire with a first eMarker to have the first port detect a disconnecting status of the second port when a first specified event happens near the first port; and

changing an electric characteristic of the configuration channel communication wire with a second eMarker to have the first port detect a disconnecting status of the second port when a second specified event happens near the second port,

wherein the first eMarker includes a first configuration channel communication circuit, and the second eMarker includes a second configuration channel communication circuit,

wherein one of the configuration channel communication circuits is set to be operable while the other one of the configuration channel communication circuits is set to be disabled when a specific condition is satisfied, wherein the specific condition is successful acquisition of power from the first eMarker to the second eMarker.

18. The method according to claim 17 , wherein the first specified event or the second specified event is an abnormal temperature event.

19. The method according to claim 17 , wherein the first eMarker includes a first active trigger circuit and a first protection circuit, wherein the first active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the first active trigger circuit is located and a supply characteristic of a bus power wire, and triggers the first protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port and having a power supply through the bus power wire suspended.

20. The method according to claim 17 , wherein the second eMarker drains power from the first eMarker through an internal power line, or the second eMarker drains power through a bus power wire of the cable.

21. The method according to claim 20 , wherein the first eMarker or the second eMarker changes an electric characteristic of the configuration channel communication wire by raising a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port and having a power supply through the bus power wire of the cable suspended.

22. The method according to claim 20 , wherein the second eMarker includes a second active trigger circuit and a second protection circuit, wherein the second active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the second active trigger circuit is located, and triggers the second protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port.

23. The method according to claim 20 , wherein the second eMarker includes a second active trigger circuit and a second protection circuit, wherein the second active trigger circuit determines whether the specified event happens according to a temperature detected at a place where the second active trigger circuit is located and a supply characteristic of the bus power wire, and triggers the second protection circuit to raise a voltage of the configuration channel communication wire to a level higher than a predetermined open-circuit voltage, thereby having the first port detect the disconnecting status of the second port.

24. The method according to claim 17 , wherein the first and second configuration channel communication circuits are set in a manner that when a specific condition is satisfied, the configuration channel communication circuit is operable, and when the specific condition is dissatisfied, the configuration channel communication circuit is disabled, wherein the specific condition is normal connection to the first power pin of the first port and the second power pin of the second port.

25. The method according to claim 17 , wherein the first and second configuration channel communication circuits are set in a manner that when a specific condition is dissatisfied, the configuration channel communication circuit is operable, and when the specific condition is satisfied, the configuration channel communication circuit is disabled, wherein the specific condition is normal connection to the first power pin of the first port and the second power pin of the second port.